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21970
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30000
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31950
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32020
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// Written in the D programming language module dparse.parser; import dparse.lexer; import dparse.ast; import dparse.rollback_allocator; import dparse.stack_buffer; import stdx.allocator.mallocator; import stdx.allocator; import std.conv; import std.algorithm; import std.array; import std.string : format; // Uncomment this if you want ALL THE OUTPUT // Caution: generates 180 megabytes of logging for std.datetime //version = dparse_verbose; /** * Params: * tokens = the tokens parsed by dparse.lexer * fileName = the name of the file being parsed * messageFunction = a function to call on error or warning messages. * The parameters are the file name, line number, column number, * the error or warning message, and a boolean (true means error, false * means warning). * Returns: the parsed module */ Module parseModule(const(Token)[] tokens, string fileName, RollbackAllocator* allocator, void delegate(string, size_t, size_t, string, bool) messageFunction = null, uint* errorCount = null, uint* warningCount = null) { auto parser = new Parser(); parser.fileName = fileName; parser.tokens = tokens; parser.messageDg = messageFunction; parser.allocator = allocator; auto mod = parser.parseModule(); if (warningCount !is null) *warningCount = parser.warningCount; if (errorCount !is null) *errorCount = parser.errorCount; return mod; } /// Ditto deprecated("Use the overload accepting a delegate instead of a function") Module parseModule(const(Token)[] tokens, string fileName, RollbackAllocator* allocator, void function(string, size_t, size_t, string, bool) messageFunction, uint* errorCount = null, uint* warningCount = null) { auto parser = new Parser(); parser.fileName = fileName; parser.tokens = tokens; parser.messageFunction = messageFunction; parser.allocator = allocator; auto mod = parser.parseModule(); if (warningCount !is null) *warningCount = parser.warningCount; if (errorCount !is null) *errorCount = parser.errorCount; return mod; } /** * D Parser. * * It is sometimes useful to sub-class Parser to skip over things that are not * interesting. For example, DCD skips over function bodies when caching symbols * from imported files. */ class Parser { /** * Parses an AddExpression. * * $(GRAMMAR $(RULEDEF addExpression): * $(RULE mulExpression) * | $(RULE addExpression) $(LPAREN)$(LITERAL '+') | $(LITERAL'-') | $(LITERAL'~')$(RPAREN) $(RULE mulExpression) * ;) */ ExpressionNode parseAddExpression() { mixin(traceEnterAndExit!(__FUNCTION__)); return parseLeftAssocBinaryExpression!(AddExpression, MulExpression, tok!"+", tok!"-", tok!"~")(); } /** * Parses an AliasDeclaration. * * $(GRAMMAR $(RULEDEF aliasDeclaration): * $(LITERAL 'alias') $(RULE aliasInitializer) $(LPAREN)$(LITERAL ',') $(RULE aliasInitializer)$(RPAREN)* $(LITERAL ';') * | $(LITERAL 'alias') $(RULE storageClass)* $(RULE type) $(RULE declaratorIdentifierList) $(LITERAL ';') * | $(LITERAL 'alias') $(RULE storageClass)* $(RULE type) $(RULE identifier) $(LITERAL '(') $(RULE parameters) $(LITERAL ')') $(memberFunctionAttribute)* $(LITERAL ';') * ;) */ AliasDeclaration parseAliasDeclaration() { mixin(traceEnterAndExit!(__FUNCTION__)); auto node = allocator.make!AliasDeclaration; mixin(tokenCheck!"alias"); node.comment = comment; comment = null; if (startsWith(tok!"identifier", tok!"=") || startsWith(tok!"identifier", tok!"(")) { StackBuffer initializers; do { if (!initializers.put(parseAliasInitializer())) return null; if (currentIs(tok!",")) advance(); else break; } while (moreTokens()); ownArray(node.initializers, initializers); } else { StackBuffer storageClasses; while (moreTokens() && isStorageClass()) if (!storageClasses.put(parseStorageClass())) return null; ownArray(node.storageClasses, storageClasses); mixin (parseNodeQ!(`node.type`, `Type`)); mixin (parseNodeQ!(`node.declaratorIdentifierList`, `DeclaratorIdentifierList`)); if (currentIs(tok!"(")) { mixin(parseNodeQ!(`node.parameters`, `Parameters`)); StackBuffer memberFunctionAttributes; while (moreTokens() && currentIsMemberFunctionAttribute()) if (!memberFunctionAttributes.put(parseMemberFunctionAttribute())) return null; ownArray(node.memberFunctionAttributes, memberFunctionAttributes); } } return attachCommentFromSemicolon(node); } /** * Parses an AliasInitializer. * * $(GRAMMAR $(RULEDEF aliasInitializer): * $(LITERAL Identifier) $(RULE templateParameters)? $(LITERAL '=') $(RULE storageClass)* $(RULE type) * | $(LITERAL Identifier) $(RULE templateParameters)? $(LITERAL '=') $(RULE functionLiteralExpression) * ;) */ AliasInitializer parseAliasInitializer() { mixin(traceEnterAndExit!(__FUNCTION__)); auto node = allocator.make!AliasInitializer; mixin (tokenCheck!(`node.name`, "identifier")); if (currentIs(tok!"(")) mixin (parseNodeQ!(`node.templateParameters`, `TemplateParameters`)); mixin(tokenCheck!"="); bool isFunction() { if (currentIsOneOf(tok!"function", tok!"delegate", tok!"{")) return true; if (startsWith(tok!"identifier", tok!"=>")) return true; if (currentIs(tok!"(")) { const t = peekPastParens(); if (t !is null) { if (t.type == tok!"=>" || t.type == tok!"{" || isMemberFunctionAttribute(t.type)) return true; } } return false; } if (isFunction) mixin (parseNodeQ!(`node.functionLiteralExpression`, `FunctionLiteralExpression`)); else { StackBuffer storageClasses; while (moreTokens() && isStorageClass()) if (!storageClasses.put(parseStorageClass())) return null; ownArray(node.storageClasses, storageClasses); mixin (parseNodeQ!(`node.type`, `Type`)); } return node; } /** * Parses an AliasThisDeclaration. * * $(GRAMMAR $(RULEDEF aliasThisDeclaration): * $(LITERAL 'alias') $(LITERAL Identifier) $(LITERAL 'this') $(LITERAL ';') * ;) */ AliasThisDeclaration parseAliasThisDeclaration() { mixin(traceEnterAndExit!(__FUNCTION__)); auto node = allocator.make!AliasThisDeclaration; mixin(tokenCheck!"alias"); mixin(tokenCheck!(`node.identifier`, "identifier")); mixin(tokenCheck!"this"); return attachCommentFromSemicolon(node); } /** * Parses an AlignAttribute. * * $(GRAMMAR $(RULEDEF alignAttribute): * $(LITERAL 'align') ($(LITERAL '$(LPAREN)') $(RULE assignExpression) $(LITERAL '$(RPAREN)'))? * ;) */ AlignAttribute parseAlignAttribute() { mixin(traceEnterAndExit!(__FUNCTION__)); auto node = allocator.make!AlignAttribute; expect(tok!"align"); if (currentIs(tok!"(")) { mixin(tokenCheck!"("); mixin(parseNodeQ!("node.assignExpression", "AssignExpression")); mixin(tokenCheck!")"); } return node; } /** * Parses an AndAndExpression. * * $(GRAMMAR $(RULEDEF andAndExpression): * $(RULE orExpression) * | $(RULE andAndExpression) $(LITERAL '&&') $(RULE orExpression) * ;) */ ExpressionNode parseAndAndExpression() { mixin(traceEnterAndExit!(__FUNCTION__)); return parseLeftAssocBinaryExpression!(AndAndExpression, OrExpression, tok!"&&")(); } /** * Parses an AndExpression. * * $(GRAMMAR $(RULEDEF andExpression): * $(RULE cmpExpression) * | $(RULE andExpression) $(LITERAL '&') $(RULE cmpExpression) * ;) */ ExpressionNode parseAndExpression() { mixin(traceEnterAndExit!(__FUNCTION__)); return parseLeftAssocBinaryExpression!(AndExpression, CmpExpression, tok!"&")(); } /** * Parses an ArgumentList. * * $(GRAMMAR $(RULEDEF argumentList): * $(RULE assignExpression) ($(LITERAL ',') $(RULE assignExpression)?)* * ;) */ ArgumentList parseArgumentList() { mixin(traceEnterAndExit!(__FUNCTION__)); if (!moreTokens) { error("argument list expected instead of EOF"); return null; } size_t startLocation = current().index; auto node = parseCommaSeparatedRule!(ArgumentList, AssignExpression)(true); mixin (nullCheck!`node`); node.startLocation = startLocation; if (moreTokens) node.endLocation = current().index; return node; } /** * Parses Arguments. * * $(GRAMMAR $(RULEDEF arguments): * $(LITERAL '$(LPAREN)') $(RULE argumentList)? $(LITERAL '$(RPAREN)') * ;) */ Arguments parseArguments() { mixin(traceEnterAndExit!(__FUNCTION__)); auto node = allocator.make!Arguments; mixin(tokenCheck!"("); if (!currentIs(tok!")")) mixin (parseNodeQ!(`node.argumentList`, `ArgumentList`)); mixin(tokenCheck!")"); return node; } /** * Parses an ArrayInitializer. * * $(GRAMMAR $(RULEDEF arrayInitializer): * $(LITERAL '[') $(LITERAL ']') * | $(LITERAL '[') $(RULE arrayMemberInitialization) ($(LITERAL ',') $(RULE arrayMemberInitialization)?)* $(LITERAL ']') * ;) */ ArrayInitializer parseArrayInitializer() { mixin(traceEnterAndExit!(__FUNCTION__)); auto node = allocator.make!ArrayInitializer; const open = expect(tok!"["); mixin (nullCheck!`open`); node.startLocation = open.index; StackBuffer arrayMemberInitializations; while (moreTokens()) { if (currentIs(tok!"]")) break; if (!arrayMemberInitializations.put(parseArrayMemberInitialization())) return null; if (currentIs(tok!",")) advance(); else break; } ownArray(node.arrayMemberInitializations, arrayMemberInitializations); const close = expect(tok!"]"); mixin (nullCheck!`close`); node.endLocation = close.index; return node; } /** * Parses an ArrayLiteral. * * $(GRAMMAR $(RULEDEF arrayLiteral): * $(LITERAL '[') $(RULE argumentList)? $(LITERAL ']') * ;) */ ArrayLiteral parseArrayLiteral() { mixin(traceEnterAndExit!(__FUNCTION__)); auto node = allocator.make!ArrayLiteral; mixin(tokenCheck!"["); if (!currentIs(tok!"]")) mixin (parseNodeQ!(`node.argumentList`, `ArgumentList`)); mixin(tokenCheck!"]"); return node; } /** * Parses an ArrayMemberInitialization. * * $(GRAMMAR $(RULEDEF arrayMemberInitialization): * ($(RULE assignExpression) $(LITERAL ':'))? $(RULE nonVoidInitializer) * ;) */ ArrayMemberInitialization parseArrayMemberInitialization() { mixin(traceEnterAndExit!(__FUNCTION__)); auto node = allocator.make!ArrayMemberInitialization; switch (current.type) { case tok!"[": immutable b = setBookmark(); skipBrackets(); if (currentIs(tok!":")) { goToBookmark(b); mixin (parseNodeQ!(`node.assignExpression`, `AssignExpression`)); advance(); // : mixin (parseNodeQ!(`node.nonVoidInitializer`, `NonVoidInitializer`)); break; } else { goToBookmark(b); goto case; } case tok!"{": mixin (parseNodeQ!(`node.nonVoidInitializer`, `NonVoidInitializer`)); break; default: auto assignExpression = parseAssignExpression(); mixin (nullCheck!`assignExpression`); if (currentIs(tok!":")) { node.assignExpression = assignExpression; advance(); mixin(parseNodeQ!(`node.nonVoidInitializer`, `NonVoidInitializer`)); } else { node.nonVoidInitializer = allocator.make!NonVoidInitializer; node.nonVoidInitializer.assignExpression = assignExpression; } } return node; } /** * Parses an AsmAddExp * * $(GRAMMAR $(RULEDEF asmAddExp): * $(RULE asmMulExp) * | $(RULE asmAddExp) ($(LITERAL '+') | $(LITERAL '-')) $(RULE asmMulExp) * ;) */ ExpressionNode parseAsmAddExp() { mixin (traceEnterAndExit!(__FUNCTION__)); return parseLeftAssocBinaryExpression!(AsmAddExp, AsmMulExp, tok!"+", tok!"-")(); } /** * Parses an AsmAndExp * * $(GRAMMAR $(RULEDEF asmAndExp): * $(RULE asmEqualExp) * | $(RULE asmAndExp) $(LITERAL '&') $(RULE asmEqualExp) * ;) */ ExpressionNode parseAsmAndExp() { mixin (traceEnterAndExit!(__FUNCTION__)); return parseLeftAssocBinaryExpression!(AsmAndExp, AsmEqualExp, tok!"&"); } /** * Parses an AsmBrExp * * $(GRAMMAR $(RULEDEF asmBrExp): * $(RULE asmUnaExp) * | $(RULE asmBrExp)? $(LITERAL '[') $(RULE asmExp) $(LITERAL ']') * ;) */ AsmBrExp parseAsmBrExp() { mixin(traceEnterAndExit!(__FUNCTION__)); AsmBrExp node = allocator.make!AsmBrExp(); size_t line = current.line; size_t column = current.column; if (currentIs(tok!"[")) { advance(); // [ mixin (parseNodeQ!(`node.asmExp`, `AsmExp`)); mixin(tokenCheck!"]"); if (currentIs(tok!"[")) goto brLoop; } else { mixin(parseNodeQ!(`node.asmUnaExp`, `AsmUnaExp`)); brLoop: while (currentIs(tok!"[")) { AsmBrExp br = allocator.make!AsmBrExp(); // huehuehuehue br.asmBrExp = node; br.line = current().line; br.column = current().column; node = br; node.line = line; node.column = column; advance(); // [ mixin(parseNodeQ!(`node.asmExp`, `AsmExp`)); mixin(tokenCheck!"]"); } } return node; } /** * Parses an AsmEqualExp * * $(GRAMMAR $(RULEDEF asmEqualExp): * $(RULE asmRelExp) * | $(RULE asmEqualExp) ('==' | '!=') $(RULE asmRelExp) * ;) */ ExpressionNode parseAsmEqualExp() { mixin(traceEnterAndExit!(__FUNCTION__)); return parseLeftAssocBinaryExpression!(AsmEqualExp, AsmRelExp, tok!"==", tok!"!=")(); } /** * Parses an AsmExp * * $(GRAMMAR $(RULEDEF asmExp): * $(RULE asmLogOrExp) ($(LITERAL '?') $(RULE asmExp) $(LITERAL ':') $(RULE asmExp))? * ;) */ ExpressionNode parseAsmExp() { mixin(traceEnterAndExit!(__FUNCTION__)); AsmExp node = allocator.make!AsmExp; mixin(parseNodeQ!(`node.left`, `AsmLogOrExp`)); if (currentIs(tok!"?")) { advance(); mixin(parseNodeQ!(`node.middle`, `AsmExp`)); mixin(tokenCheck!":"); mixin(parseNodeQ!(`node.right`, `AsmExp`)); } return node; } /** * Parses an AsmInstruction * * $(GRAMMAR $(RULEDEF asmInstruction): * $(LITERAL Identifier) * | $(LITERAL 'align') $(LITERAL IntegerLiteral) * | $(LITERAL 'align') $(LITERAL Identifier) * | $(LITERAL Identifier) $(LITERAL ':') $(RULE asmInstruction) * | $(LITERAL Identifier) $(RULE operands) * | $(LITERAL 'in') $(RULE operands) * | $(LITERAL 'out') $(RULE operands) * | $(LITERAL 'int') $(RULE operands) * ;) */ AsmInstruction parseAsmInstruction() { mixin (traceEnterAndExit!(__FUNCTION__)); AsmInstruction node = allocator.make!AsmInstruction; if (currentIs(tok!"align")) { advance(); // align node.hasAlign = true; if (currentIsOneOf(tok!"intLiteral", tok!"identifier")) { node.identifierOrIntegerOrOpcode = advance(); if (!currentIs(tok!";")) { error("`;` expected."); advance(); return null; } } else { error("Identifier or integer literal expected."); return null; } } else if (currentIsOneOf(tok!"identifier", tok!"in", tok!"out", tok!"int")) { node.identifierOrIntegerOrOpcode = advance(); if (node.identifierOrIntegerOrOpcode == tok!"identifier" && currentIs(tok!":")) { advance(); // : mixin(parseNodeQ!(`node.asmInstruction`, `AsmInstruction`)); } else if (!currentIs(tok!";")) mixin(parseNodeQ!(`node.operands`, `Operands`)); } return node; } /** * Parses an AsmLogAndExp * * $(GRAMMAR $(RULEDEF asmLogAndExp): * $(RULE asmOrExp) * $(RULE asmLogAndExp) $(LITERAL '&&') $(RULE asmOrExp) * ;) */ ExpressionNode parseAsmLogAndExp() { mixin (traceEnterAndExit!(__FUNCTION__)); return parseLeftAssocBinaryExpression!(AsmLogAndExp, AsmOrExp, tok!"&&"); } /** * Parses an AsmLogOrExp * * $(GRAMMAR $(RULEDEF asmLogOrExp): * $(RULE asmLogAndExp) * | $(RULE asmLogOrExp) '||' $(RULE asmLogAndExp) * ;) */ ExpressionNode parseAsmLogOrExp() { mixin(traceEnterAndExit!(__FUNCTION__)); return parseLeftAssocBinaryExpression!(AsmLogOrExp, AsmLogAndExp, tok!"||")(); } /** * Parses an AsmMulExp * * $(GRAMMAR $(RULEDEF asmMulExp): * $(RULE asmBrExp) * | $(RULE asmMulExp) ($(LITERAL '*') | $(LITERAL '/') | $(LITERAL '%')) $(RULE asmBrExp) * ;) */ ExpressionNode parseAsmMulExp() { mixin(traceEnterAndExit!(__FUNCTION__)); return parseLeftAssocBinaryExpression!(AsmMulExp, AsmBrExp, tok!"*", tok!"/", tok!"%")(); } /** * Parses an AsmOrExp * * $(GRAMMAR $(RULEDEF asmOrExp): * $(RULE asmXorExp) * | $(RULE asmOrExp) $(LITERAL '|') $(RULE asmXorExp) * ;) */ ExpressionNode parseAsmOrExp() { mixin (traceEnterAndExit!(__FUNCTION__)); return parseLeftAssocBinaryExpression!(AsmOrExp, AsmXorExp, tok!"|")(); } /** * Parses an AsmPrimaryExp * * $(GRAMMAR $(RULEDEF asmPrimaryExp): * $(LITERAL IntegerLiteral) * | $(LITERAL FloatLiteral) * | $(LITERAL StringLiteral) * | $(RULE register) * | $(RULE register : AsmExp) * | $(RULE identifierChain) * | $(LITERAL '$') * ;) */ AsmPrimaryExp parseAsmPrimaryExp() { import std.range : assumeSorted; mixin (traceEnterAndExit!(__FUNCTION__)); AsmPrimaryExp node = allocator.make!AsmPrimaryExp(); switch (current().type) { case tok!"doubleLiteral": case tok!"floatLiteral": case tok!"intLiteral": case tok!"longLiteral": case tok!"stringLiteral": case tok!"$": node.token = advance(); break; case tok!"identifier": if (assumeSorted(REGISTER_NAMES).equalRange(current().text).length > 0) { trace("Found register"); mixin (nullCheck!`(node.register = parseRegister())`); if (current.type == tok!":") { advance(); mixin(parseNodeQ!(`node.segmentOverrideSuffix`, `AsmExp`)); } } else mixin(parseNodeQ!(`node.identifierChain`, `IdentifierChain`)); break; default: error("Float literal, integer literal, `$`, or identifier expected."); return null; } return node; } /** * Parses an AsmRelExp * * $(GRAMMAR $(RULEDEF asmRelExp): * $(RULE asmShiftExp) * | $(RULE asmRelExp) (($(LITERAL '<') | $(LITERAL '<=') | $(LITERAL '>') | $(LITERAL '>=')) $(RULE asmShiftExp))? * ;) */ ExpressionNode parseAsmRelExp() { mixin (traceEnterAndExit!(__FUNCTION__)); return parseLeftAssocBinaryExpression!(AsmRelExp, AsmShiftExp, tok!"<", tok!"<=", tok!">", tok!">=")(); } /** * Parses an AsmShiftExp * * $(GRAMMAR $(RULEDEF asmShiftExp): * $(RULE asmAddExp) * $(RULE asmShiftExp) ($(LITERAL '<<') | $(LITERAL '>>') | $(LITERAL '>>>')) $(RULE asmAddExp) * ;) */ ExpressionNode parseAsmShiftExp() { mixin (traceEnterAndExit!(__FUNCTION__)); return parseLeftAssocBinaryExpression!(AsmShiftExp, AsmAddExp, tok!"<<", tok!">>", tok!">>>"); } /** * Parses an AsmStatement * * $(GRAMMAR $(RULEDEF asmStatement): * $(LITERAL 'asm') $(RULE functionAttributes)? $(LITERAL '{') $(RULE asmInstruction)+ $(LITERAL '}') * ;) */ AsmStatement parseAsmStatement() { mixin (traceEnterAndExit!(__FUNCTION__)); AsmStatement node = allocator.make!AsmStatement; advance(); // asm StackBuffer functionAttributes; while (isAttribute()) { if (!functionAttributes.put(parseFunctionAttribute())) { error("Function attribute or `{` expected"); return null; } } ownArray(node.functionAttributes, functionAttributes); advance(); // { StackBuffer instructions; while (moreTokens() && !currentIs(tok!"}")) { auto c = allocator.setCheckpoint(); if (!instructions.put(parseAsmInstruction())) allocator.rollback(c); else expect(tok!";"); } ownArray(node.asmInstructions, instructions); expect(tok!"}"); return node; } /** * Parses an AsmTypePrefix * * Note that in the following grammar definition the first identifier must * be "near", "far", "word", "dword", or "qword". The second identifier must * be "ptr". * * $(GRAMMAR $(RULEDEF asmTypePrefix): * $(LITERAL Identifier) $(LITERAL Identifier)? * | $(LITERAL 'byte') $(LITERAL Identifier)? * | $(LITERAL 'short') $(LITERAL Identifier)? * | $(LITERAL 'int') $(LITERAL Identifier)? * | $(LITERAL 'float') $(LITERAL Identifier)? * | $(LITERAL 'double') $(LITERAL Identifier)? * | $(LITERAL 'real') $(LITERAL Identifier)? * ;) */ AsmTypePrefix parseAsmTypePrefix() { mixin (traceEnterAndExit!(__FUNCTION__)); switch (current().type) { case tok!"identifier": case tok!"byte": case tok!"short": case tok!"int": case tok!"float": case tok!"double": case tok!"real": AsmTypePrefix node = allocator.make!AsmTypePrefix(); node.left = advance(); if (node.left.type == tok!"identifier") switch (node.left.text) { case "near": case "far": case "word": case "dword": case "qword": break; default: error("ASM type node expected"); return null; } if (currentIs(tok!"identifier") && current().text == "ptr") node.right = advance(); return node; default: error("Expected an identifier, `byte`, `short`, `int`, `float`, `double`, or `real`"); return null; } } /** * Parses an AsmUnaExp * * $(GRAMMAR $(RULEDEF asmUnaExp): * $(RULE asmTypePrefix) $(RULE asmExp) * | $(LITERAL Identifier) $(RULE asmExp) * | $(LITERAL '+') $(RULE asmUnaExp) * | $(LITERAL '-') $(RULE asmUnaExp) * | $(LITERAL '!') $(RULE asmUnaExp) * | $(LITERAL '~') $(RULE asmUnaExp) * | $(RULE asmPrimaryExp) * ;) */ AsmUnaExp parseAsmUnaExp() { mixin (traceEnterAndExit!(__FUNCTION__)); AsmUnaExp node = allocator.make!AsmUnaExp(); switch (current().type) { case tok!"+": case tok!"-": case tok!"!": case tok!"~": node.prefix = advance(); mixin(parseNodeQ!(`node.asmUnaExp`, `AsmUnaExp`)); break; case tok!"byte": case tok!"short": case tok!"int": case tok!"float": case tok!"double": case tok!"real": typePrefix: mixin(parseNodeQ!(`node.asmTypePrefix`, `AsmTypePrefix`)); mixin(parseNodeQ!(`node.asmExp`, `AsmExp`)); break; case tok!"identifier": switch (current().text) { case "offsetof": case "seg": node.prefix = advance(); mixin(parseNodeQ!(`node.asmExp`, `AsmExp`)); break; case "near": case "far": case "word": case "dword": case "qword": goto typePrefix; default: goto outerDefault; } break; outerDefault: default: mixin(parseNodeQ!(`node.asmPrimaryExp`, `AsmPrimaryExp`)); break; } return node; } /** * Parses an AsmXorExp * * $(GRAMMAR $(RULEDEF asmXorExp): * $(RULE asmAndExp) * | $(RULE asmXorExp) $(LITERAL '^') $(RULE asmAndExp) * ;) */ ExpressionNode parseAsmXorExp() { mixin (traceEnterAndExit!(__FUNCTION__)); return parseLeftAssocBinaryExpression!(AsmXorExp, AsmAndExp, tok!"^")(); } /** * Parses an AssertExpression * * $(GRAMMAR $(RULEDEF assertExpression): * $(LITERAL 'assert') $(LITERAL '$(LPAREN)') $(RULE assignExpression) ($(LITERAL ',') $(RULE assignExpression))? $(LITERAL ',')? $(LITERAL '$(RPAREN)') * ;) */ AssertExpression parseAssertExpression() { mixin(traceEnterAndExit!(__FUNCTION__)); auto node = allocator.make!AssertExpression; node.line = current.line; node.column = current.column; advance(); // "assert" mixin(tokenCheck!"("); mixin(parseNodeQ!(`node.assertion`, `AssignExpression`)); if (currentIs(tok!",")) { advance(); if (currentIs(tok!")")) { advance(); return node; } mixin(parseNodeQ!(`node.message`, `AssignExpression`)); } if (currentIs(tok!",")) advance(); mixin(tokenCheck!")"); return node; } /** * Parses an AssignExpression * * $(GRAMMAR $(RULEDEF assignExpression): * $(RULE ternaryExpression) ($(RULE assignOperator) $(RULE assignExpression))? * ; *$(RULEDEF assignOperator): * $(LITERAL '=') * | $(LITERAL '>>>=') * | $(LITERAL '>>=') * | $(LITERAL '<<=') * | $(LITERAL '+=') * | $(LITERAL '-=') * | $(LITERAL '*=') * | $(LITERAL '%=') * | $(LITERAL '&=') * | $(LITERAL '/=') * | $(LITERAL '|=') * | $(LITERAL '^^=') * | $(LITERAL '^=') * | $(LITERAL '~=') * ;) */ ExpressionNode parseAssignExpression() { mixin(traceEnterAndExit!(__FUNCTION__)); if (!moreTokens) { error("Assign expression expected instead of EOF"); return null; } auto ternary = parseTernaryExpression(); if (ternary is null) return null; if (currentIsOneOf(tok!"=", tok!">>>=", tok!">>=", tok!"<<=", tok!"+=", tok!"-=", tok!"*=", tok!"%=", tok!"&=", tok!"/=", tok!"|=", tok!"^^=", tok!"^=", tok!"~=")) { auto node = allocator.make!AssignExpression; node.line = current().line; node.column = current().column; node.ternaryExpression = ternary; node.operator = advance().type; mixin(parseNodeQ!(`node.expression`, `AssignExpression`)); return node; } return ternary; } /** * Parses an AssocArrayLiteral * * $(GRAMMAR $(RULEDEF assocArrayLiteral): * $(LITERAL '[') $(RULE keyValuePairs) $(LITERAL ']') * ;) */ AssocArrayLiteral parseAssocArrayLiteral() { mixin(traceEnterAndExit!(__FUNCTION__)); mixin (simpleParse!(AssocArrayLiteral, tok!"[", "keyValuePairs|parseKeyValuePairs", tok!"]")); } /** * Parses an AtAttribute * * $(GRAMMAR $(RULEDEF atAttribute): * $(LITERAL '@') $(LITERAL Identifier) * | $(LITERAL '@') $(LITERAL Identifier) $(LITERAL '$(LPAREN)') $(RULE argumentList)? $(LITERAL '$(RPAREN)') * | $(LITERAL '@') $(LITERAL '$(LPAREN)') $(RULE argumentList) $(LITERAL '$(RPAREN)') * | $(LITERAL '@') $(RULE templateInstance) * ;) */ AtAttribute parseAtAttribute() { mixin(traceEnterAndExit!(__FUNCTION__)); auto node = allocator.make!AtAttribute; const start = expect(tok!"@"); mixin (nullCheck!`start`); if (!moreTokens) { error("`(`, or identifier expected"); return null; } node.startLocation = start.index; switch (current.type) { case tok!"identifier": if (peekIs(tok!"!")) mixin(parseNodeQ!(`node.templateInstance`, `TemplateInstance`)); else node.identifier = advance(); if (currentIs(tok!"(")) { advance(); // ( if (!currentIs(tok!")")) mixin(parseNodeQ!(`node.argumentList`, `ArgumentList`)); expect(tok!")"); } break; case tok!"(": advance(); mixin(parseNodeQ!(`node.argumentList`, `ArgumentList`)); expect(tok!")"); break; default: error("`(`, or identifier expected"); return null; } if (moreTokens) node.endLocation = current().index; return node; } /** * Parses an Attribute * * $(GRAMMAR $(RULEDEF attribute): * $(RULE pragmaExpression) * | $(RULE alignAttribute) * | $(RULE deprecated) * | $(RULE atAttribute) * | $(RULE linkageAttribute) * | $(LITERAL 'export') * | $(LITERAL 'package') ($(LITERAL "(") $(RULE identifierChain) $(LITERAL ")"))? * | $(LITERAL 'private') * | $(LITERAL 'protected') * | $(LITERAL 'public') * | $(LITERAL 'static') * | $(LITERAL 'extern') * | $(LITERAL 'abstract') * | $(LITERAL 'final') * | $(LITERAL 'override') * | $(LITERAL 'synchronized') * | $(LITERAL 'auto') * | $(LITERAL 'scope') * | $(LITERAL 'const') * | $(LITERAL 'immutable') * | $(LITERAL 'inout') * | $(LITERAL 'shared') * | $(LITERAL '__gshared') * | $(LITERAL 'nothrow') * | $(LITERAL 'pure') * | $(LITERAL 'ref') * ;) */ Attribute parseAttribute() { mixin(traceEnterAndExit!(__FUNCTION__)); auto node = allocator.make!Attribute; switch (current.type) { case tok!"pragma": mixin(parseNodeQ!(`node.pragmaExpression`, `PragmaExpression`)); break; case tok!"deprecated": mixin(parseNodeQ!(`node.deprecated_`, `Deprecated`)); break; case tok!"align": mixin(parseNodeQ!(`node.alignAttribute`, `AlignAttribute`)); break; case tok!"@": mixin(parseNodeQ!(`node.atAttribute`, `AtAttribute`)); break; case tok!"package": node.attribute = advance(); if (currentIs(tok!"(")) { expect(tok!"("); mixin(parseNodeQ!(`node.identifierChain`, `IdentifierChain`)); expect(tok!")"); } break; case tok!"extern": if (peekIs(tok!"(")) { mixin(parseNodeQ!(`node.linkageAttribute`, `LinkageAttribute`)); break; } else goto case; case tok!"private": case tok!"protected": case tok!"public": case tok!"export": case tok!"static": case tok!"abstract": case tok!"final": case tok!"override": case tok!"synchronized": case tok!"auto": case tok!"scope": case tok!"const": case tok!"immutable": case tok!"inout": case tok!"shared": case tok!"__gshared": case tok!"nothrow": case tok!"pure": case tok!"ref": node.attribute = advance(); break; default: return null; } return node; } /** * Parses an AttributeDeclaration * * $(GRAMMAR $(RULEDEF attributeDeclaration): * $(RULE _attribute) $(LITERAL ':') * ;) */ AttributeDeclaration parseAttributeDeclaration(Attribute attribute = null) { auto node = allocator.make!AttributeDeclaration; node.line = current.line; node.attribute = attribute is null ? parseAttribute() : attribute; expect(tok!":"); return node; } /** * Parses an AutoDeclaration * * $(GRAMMAR $(RULEDEF autoDeclaration): * $(RULE storageClass)+ $(RULE autoDeclarationPart) ($(LITERAL ',') $(RULE autoDeclarationPart))* $(LITERAL ';') * ;) */ AutoDeclaration parseAutoDeclaration() { mixin(traceEnterAndExit!(__FUNCTION__)); auto node = allocator.make!AutoDeclaration; node.comment = comment; comment = null; StackBuffer storageClasses; while (isStorageClass()) if (!storageClasses.put(parseStorageClass())) return null; ownArray(node.storageClasses, storageClasses); StackBuffer parts; do { if (!parts.put(parseAutoDeclarationPart())) return null; if (currentIs(tok!",")) advance(); else break; } while (moreTokens()); ownArray(node.parts, parts); return attachCommentFromSemicolon(node); } /** * Parses an AutoDeclarationPart * * $(GRAMMAR $(RULEDEF autoDeclarationPart): * $(LITERAL Identifier) $(RULE templateParameters)? $(LITERAL '=') $(RULE initializer) * ;) */ AutoDeclarationPart parseAutoDeclarationPart() { mixin(traceEnterAndExit!(__FUNCTION__)); auto part = allocator.make!AutoDeclarationPart; auto i = expect(tok!"identifier"); if (i is null) return null; part.identifier = *i; if (currentIs(tok!"(")) mixin(parseNodeQ!("part.templateParameters", "TemplateParameters")); mixin(tokenCheck!"="); mixin(parseNodeQ!("part.initializer", "Initializer")); return part; } /** * Parses a BlockStatement * * $(GRAMMAR $(RULEDEF blockStatement): * $(LITERAL '{') $(RULE declarationsAndStatements)? $(LITERAL '}') * ;) */ BlockStatement parseBlockStatement() { mixin(traceEnterAndExit!(__FUNCTION__)); auto node = allocator.make!BlockStatement; const openBrace = expect(tok!"{"); mixin (nullCheck!`openBrace`); node.startLocation = openBrace.index; if (!currentIs(tok!"}")) { mixin(parseNodeQ!(`node.declarationsAndStatements`, `DeclarationsAndStatements`)); } const closeBrace = expect(tok!"}"); if (closeBrace !is null) node.endLocation = closeBrace.index; else { trace("Could not find end of block statement."); node.endLocation = size_t.max; } return node; } /** * Parses a BodyStatement * * $(GRAMMAR $(RULEDEF bodyStatement): * ($(LITERAL 'body') | $(LITERAL 'do')) $(RULE blockStatement) * ;) */ BodyStatement parseBodyStatement() { mixin(traceEnterAndExit!(__FUNCTION__)); auto node = allocator.make!BodyStatement; if (!currentIs(tok!"do") && current.text != "body") return null; advance(); mixin(simpleParseItem!("blockStatement|parseBlockStatement")); return node; } /** * Parses a BreakStatement * * $(GRAMMAR $(RULEDEF breakStatement): * $(LITERAL 'break') $(LITERAL Identifier)? $(LITERAL ';') * ;) */ BreakStatement parseBreakStatement() { mixin(traceEnterAndExit!(__FUNCTION__)); expect(tok!"break"); if (!moreTokens) return null; auto node = allocator.make!BreakStatement; switch (current.type) { case tok!"identifier": node.label = advance(); mixin(tokenCheck!";"); break; case tok!";": advance(); break; default: error("Identifier or semicolon expected following `break`"); return null; } return node; } /** * Parses a BaseClass * * $(GRAMMAR $(RULEDEF baseClass): * $(RULE type2) * ;) */ BaseClass parseBaseClass() { mixin(traceEnterAndExit!(__FUNCTION__)); auto node = allocator.make!BaseClass; if (current.type.isProtection()) { warn("Use of base class protection is deprecated."); advance(); } if ((node.type2 = parseType2()) is null) { return null; } return node; } /** * Parses a BaseClassList * * $(GRAMMAR $(RULEDEF baseClassList): * $(RULE baseClass) ($(LITERAL ',') $(RULE baseClass))* * ;) */ BaseClassList parseBaseClassList() { mixin(traceEnterAndExit!(__FUNCTION__)); return parseCommaSeparatedRule!(BaseClassList, BaseClass)(); } /** * Parses an BuiltinType * * $(GRAMMAR $(RULEDEF builtinType): * $(LITERAL 'bool') * | $(LITERAL 'byte') * | $(LITERAL 'ubyte') * | $(LITERAL 'short') * | $(LITERAL 'ushort') * | $(LITERAL 'int') * | $(LITERAL 'uint') * | $(LITERAL 'long') * | $(LITERAL 'ulong') * | $(LITERAL 'char') * | $(LITERAL 'wchar') * | $(LITERAL 'dchar') * | $(LITERAL 'float') * | $(LITERAL 'double') * | $(LITERAL 'real') * | $(LITERAL 'ifloat') * | $(LITERAL 'idouble') * | $(LITERAL 'ireal') * | $(LITERAL 'cfloat') * | $(LITERAL 'cdouble') * | $(LITERAL 'creal') * | $(LITERAL 'void') * ;) */ IdType parseBuiltinType() { mixin(traceEnterAndExit!(__FUNCTION__)); return advance().type; } /** * Parses a CaseRangeStatement * * $(GRAMMAR $(RULEDEF caseRangeStatement): * $(LITERAL 'case') $(RULE assignExpression) $(LITERAL ':') $(LITERAL '...') $(LITERAL 'case') $(RULE assignExpression) $(LITERAL ':') $(RULE declarationsAndStatements) * ;) */ CaseRangeStatement parseCaseRangeStatement(ExpressionNode low) { mixin(traceEnterAndExit!(__FUNCTION__)); auto node = allocator.make!CaseRangeStatement; assert (low !is null); node.low = low; mixin(tokenCheck!":"); mixin(tokenCheck!".."); expect(tok!"case"); mixin(parseNodeQ!(`node.high`, `AssignExpression`)); const colon = expect(tok!":"); if (colon is null) return null; node.colonLocation = colon.index; mixin(parseNodeQ!(`node.declarationsAndStatements`, `DeclarationsAndStatements`)); return node; } /** * Parses an CaseStatement * * $(GRAMMAR $(RULEDEF caseStatement): * $(LITERAL 'case') $(RULE _argumentList) $(LITERAL ':') $(RULE declarationsAndStatements) * ;) */ CaseStatement parseCaseStatement(ArgumentList argumentList = null) { mixin(traceEnterAndExit!(__FUNCTION__)); auto node = allocator.make!CaseStatement; node.argumentList = argumentList; const colon = expect(tok!":"); if (colon is null) return null; node.colonLocation = colon.index; mixin (nullCheck!`node.declarationsAndStatements = parseDeclarationsAndStatements(false)`); return node; } /** * Parses a CastExpression * * $(GRAMMAR $(RULEDEF castExpression): * $(LITERAL 'cast') $(LITERAL '$(LPAREN)') ($(RULE type) | $(RULE castQualifier))? $(LITERAL '$(RPAREN)') $(RULE unaryExpression) * ;) */ CastExpression parseCastExpression() { mixin(traceEnterAndExit!(__FUNCTION__)); auto node = allocator.make!CastExpression; expect(tok!"cast"); mixin(tokenCheck!"("); if (!currentIs(tok!")")) { if (isCastQualifier()) mixin(parseNodeQ!(`node.castQualifier`, `CastQualifier`)); else mixin(parseNodeQ!(`node.type`, `Type`)); } mixin(tokenCheck!")"); mixin(parseNodeQ!(`node.unaryExpression`, `UnaryExpression`)); return node; } /** * Parses a CastQualifier * * $(GRAMMAR $(RULEDEF castQualifier): * $(LITERAL 'const') * | $(LITERAL 'const') $(LITERAL 'shared') * | $(LITERAL 'immutable') * | $(LITERAL 'inout') * | $(LITERAL 'inout') $(LITERAL 'shared') * | $(LITERAL 'shared') * | $(LITERAL 'shared') $(LITERAL 'const') * | $(LITERAL 'shared') $(LITERAL 'inout') * ;) */ CastQualifier parseCastQualifier() { mixin(traceEnterAndExit!(__FUNCTION__)); auto node = allocator.make!CastQualifier; switch (current.type) { case tok!"inout": case tok!"const": node.first = advance(); if (currentIs(tok!"shared")) node.second = advance(); break; case tok!"shared": node.first = advance(); if (currentIsOneOf(tok!"const", tok!"inout")) node.second = advance(); break; case tok!"immutable": node.first = advance(); break; default: error("`const`, `immutable`, `inout`, or `shared` expected"); return null; } return node; } /** * Parses a Catch * * $(GRAMMAR $(RULEDEF catch): * $(LITERAL 'catch') $(LITERAL '$(LPAREN)') $(RULE type) $(LITERAL Identifier)? $(LITERAL '$(RPAREN)') $(RULE declarationOrStatement) * ;) */ Catch parseCatch() { mixin(traceEnterAndExit!(__FUNCTION__)); auto node = allocator.make!Catch; expect(tok!"catch"); mixin(tokenCheck!"("); mixin(parseNodeQ!(`node.type`, `Type`)); if (currentIs(tok!"identifier")) node.identifier = advance(); mixin(tokenCheck!")"); mixin(parseNodeQ!(`node.declarationOrStatement`, `DeclarationOrStatement`)); return node; } /** * Parses a Catches * * $(GRAMMAR $(RULEDEF catches): * $(RULE catch)+ * | $(RULE catch)* $(RULE lastCatch) * ;) */ Catches parseCatches() { mixin(traceEnterAndExit!(__FUNCTION__)); auto node = allocator.make!Catches; StackBuffer catches; while (moreTokens()) { if (!currentIs(tok!"catch")) break; if (peekIs(tok!"(")) { if (!catches.put(parseCatch())) return null; } else { mixin(parseNodeQ!(`node.lastCatch`, `LastCatch`)); break; } } ownArray(node.catches, catches); return node; } /** * Parses a ClassDeclaration * * $(GRAMMAR $(RULEDEF classDeclaration): * $(LITERAL 'class') $(LITERAL Identifier) $(LITERAL ';') * | $(LITERAL 'class') $(LITERAL Identifier) ($(LITERAL ':') $(RULE baseClassList))? $(RULE structBody) * | $(LITERAL 'class') $(LITERAL Identifier) $(RULE templateParameters) $(RULE constraint)? ($(RULE structBody) | $(LITERAL ';')) * | $(LITERAL 'class') $(LITERAL Identifier) $(RULE templateParameters) $(RULE constraint)? ($(LITERAL ':') $(RULE baseClassList))? $(RULE structBody) * | $(LITERAL 'class') $(LITERAL Identifier) $(RULE templateParameters) ($(LITERAL ':') $(RULE baseClassList))? $(RULE constraint)? $(RULE structBody) * ;) */ ClassDeclaration parseClassDeclaration() { mixin(traceEnterAndExit!(__FUNCTION__)); auto node = allocator.make!ClassDeclaration; expect(tok!"class"); return parseInterfaceOrClass(node); } /** * Parses a CmpExpression * * $(GRAMMAR $(RULEDEF cmpExpression): * $(RULE shiftExpression) * | $(RULE equalExpression) * | $(RULE identityExpression) * | $(RULE relExpression) * | $(RULE inExpression) * ;) */ ExpressionNode parseCmpExpression() { mixin(traceEnterAndExit!(__FUNCTION__)); auto shift = parseShiftExpression(); if (shift is null) return null; if (!moreTokens()) return shift; switch (current.type) { case tok!"is": auto node = allocator.make!CmpExpression; mixin (nullCheck!`node.identityExpression = parseIdentityExpression(shift)`); return node; case tok!"in": auto node = allocator.make!CmpExpression; mixin (nullCheck!`node.inExpression = parseInExpression(shift)`); return node; case tok!"!": auto node = allocator.make!CmpExpression; if (peekIs(tok!"is")) mixin (nullCheck!`node.identityExpression = parseIdentityExpression(shift)`); else if (peekIs(tok!"in")) mixin (nullCheck!`node.inExpression = parseInExpression(shift)`); return node; case tok!"<": case tok!"<=": case tok!">": case tok!">=": case tok!"!<>=": case tok!"!<>": case tok!"<>": case tok!"<>=": case tok!"!>": case tok!"!>=": case tok!"!<": case tok!"!<=": auto node = allocator.make!CmpExpression; mixin (nullCheck!`node.relExpression = parseRelExpression(shift)`); return node; case tok!"==": case tok!"!=": auto node = allocator.make!CmpExpression; mixin (nullCheck!`node.equalExpression = parseEqualExpression(shift)`); return node; default: return shift; } } /** * Parses a CompileCondition * * $(GRAMMAR $(RULEDEF compileCondition): * $(RULE versionCondition) * | $(RULE debugCondition) * | $(RULE staticIfCondition) * ;) */ CompileCondition parseCompileCondition() { mixin(traceEnterAndExit!(__FUNCTION__)); auto node = allocator.make!CompileCondition; switch (current.type) { case tok!"version": mixin(parseNodeQ!(`node.versionCondition`, `VersionCondition`)); break; case tok!"debug": mixin(parseNodeQ!(`node.debugCondition`, `DebugCondition`)); break; case tok!"static": mixin(parseNodeQ!(`node.staticIfCondition`, `StaticIfCondition`)); break; default: error("`version`, `debug`, or `static` expected"); return null; } return node; } /** * Parses a ConditionalDeclaration * * $(GRAMMAR $(RULEDEF conditionalDeclaration): * $(RULE compileCondition) $(RULE declaration) * | $(RULE compileCondition) $(LITERAL '{') $(RULE declaration)* $(LITERAL '}') * | $(RULE compileCondition) $(LITERAL ':') $(RULE declaration)+ * | $(RULE compileCondition) $(RULE declaration) $(LITERAL 'else') $(LITERAL ':') $(RULE declaration)* * | $(RULE compileCondition) $(RULE declaration) $(LITERAL 'else') $(RULE declaration) * | $(RULE compileCondition) $(RULE declaration) $(LITERAL 'else') $(LITERAL '{') $(RULE declaration)* $(LITERAL '}') * | $(RULE compileCondition) $(LITERAL '{') $(RULE declaration)* $(LITERAL '}') $(LITERAL 'else') $(RULE declaration) * | $(RULE compileCondition) $(LITERAL '{') $(RULE declaration)* $(LITERAL '}') $(LITERAL 'else') $(LITERAL '{') $(RULE declaration)* $(LITERAL '}') * | $(RULE compileCondition) $(LITERAL '{') $(RULE declaration)* $(LITERAL '}') $(LITERAL 'else') $(LITERAL ':') $(RULE declaration)* * | $(RULE compileCondition) $(LITERAL ':') $(RULE declaration)+ $(LITERAL 'else') $(RULE declaration) * | $(RULE compileCondition) $(LITERAL ':') $(RULE declaration)+ $(LITERAL 'else') $(LITERAL '{') $(RULE declaration)* $(LITERAL '}') * | $(RULE compileCondition) $(LITERAL ':') $(RULE declaration)+ $(LITERAL 'else') $(LITERAL ':') $(RULE declaration)* * ;) */ ConditionalDeclaration parseConditionalDeclaration(bool strict) { mixin(traceEnterAndExit!(__FUNCTION__)); auto node = allocator.make!ConditionalDeclaration; mixin(parseNodeQ!(`node.compileCondition`, `CompileCondition`)); StackBuffer trueDeclarations; if (currentIs(tok!":") || currentIs(tok!"{")) { immutable bool brace = advance() == tok!"{"; while (moreTokens() && !currentIs(tok!"}") && !currentIs(tok!"else")) { immutable c = allocator.setCheckpoint(); if (!trueDeclarations.put(parseDeclaration(strict, true))) { allocator.rollback(c); return null; } } if (brace) mixin(tokenCheck!"}"); } else if (!trueDeclarations.put(parseDeclaration(strict, true))) return null; ownArray(node.trueDeclarations, trueDeclarations); if (currentIs(tok!"else")) { node.hasElse = true; advance(); } else return node; StackBuffer falseDeclarations; if (currentIs(tok!":") || currentIs(tok!"{")) { immutable bool brace = currentIs(tok!"{"); advance(); while (moreTokens() && !currentIs(tok!"}")) if (!falseDeclarations.put(parseDeclaration(strict, true))) return null; if (brace) mixin(tokenCheck!"}"); } else { if (!falseDeclarations.put(parseDeclaration(strict, true))) return null; } ownArray(node.falseDeclarations, falseDeclarations); return node; } /** * Parses a ConditionalStatement * * $(GRAMMAR $(RULEDEF conditionalStatement): * $(RULE compileCondition) $(RULE declarationOrStatement) ($(LITERAL 'else') $(RULE declarationOrStatement))? * ;) */ ConditionalStatement parseConditionalStatement() { mixin(traceEnterAndExit!(__FUNCTION__)); auto node = allocator.make!ConditionalStatement; mixin(parseNodeQ!(`node.compileCondition`, `CompileCondition`)); mixin(parseNodeQ!(`node.trueStatement`, `DeclarationOrStatement`)); if (currentIs(tok!"else")) { advance(); mixin(parseNodeQ!(`node.falseStatement`, `DeclarationOrStatement`)); } return node; } /** * Parses a Constraint * * $(GRAMMAR $(RULEDEF constraint): * $(LITERAL 'if') $(LITERAL '$(LPAREN)') $(RULE expression) $(LITERAL '$(RPAREN)') * ;) */ Constraint parseConstraint() { mixin(traceEnterAndExit!(__FUNCTION__)); auto node = allocator.make!Constraint; auto ifToken = expect(tok!"if"); mixin (nullCheck!`ifToken`); node.location = ifToken.index; mixin(tokenCheck!"("); mixin(parseNodeQ!(`node.expression`, `Expression`)); mixin(tokenCheck!")"); return node; } /** * Parses a Constructor * * $(GRAMMAR $(RULEDEF constructor): * $(LITERAL 'this') $(RULE templateParameters)? $(RULE parameters) $(RULE memberFunctionAttribute)* $(RULE constraint)? ($(RULE functionBody) | $(LITERAL ';')) * ;) */ Constructor parseConstructor() { mixin(traceEnterAndExit!(__FUNCTION__)); Constructor node = allocator.make!Constructor; node.comment = comment; comment = null; const t = expect(tok!"this"); mixin (nullCheck!`t`); node.location = t.index; node.line = t.line; node.column = t.column; const p = peekPastParens(); bool isTemplate = false; if (p !is null && p.type == tok!"(") { isTemplate = true; mixin(parseNodeQ!(`node.templateParameters`, `TemplateParameters`)); } mixin(parseNodeQ!(`node.parameters`, `Parameters`)); StackBuffer memberFunctionAttributes; while (moreTokens() && currentIsMemberFunctionAttribute()) if (!memberFunctionAttributes.put(parseMemberFunctionAttribute())) return null; ownArray(node.memberFunctionAttributes, memberFunctionAttributes); if (isTemplate && currentIs(tok!"if")) mixin(parseNodeQ!(`node.constraint`, `Constraint`)); if (currentIs(tok!";")) advance(); else mixin(parseNodeQ!(`node.functionBody`, `FunctionBody`)); return node; } /** * Parses an ContinueStatement * * $(GRAMMAR $(RULEDEF continueStatement): * $(LITERAL 'continue') $(LITERAL Identifier)? $(LITERAL ';') * ;) */ ContinueStatement parseContinueStatement() { mixin(traceEnterAndExit!(__FUNCTION__)); mixin(tokenCheck!"continue"); if (!moreTokens) return null; auto node = allocator.make!ContinueStatement; switch (current.type) { case tok!"identifier": node.label = advance(); mixin(tokenCheck!";"); break; case tok!";": advance(); break; default: error("Identifier or semicolon expected following `continue`"); return null; } return node; } /** * Parses a DebugCondition * * $(GRAMMAR $(RULEDEF debugCondition): * $(LITERAL 'debug') ($(LITERAL '$(LPAREN)') ($(LITERAL IntegerLiteral) | $(LITERAL Identifier)) $(LITERAL '$(RPAREN)'))? * ;) */ DebugCondition parseDebugCondition() { mixin(traceEnterAndExit!(__FUNCTION__)); auto node = allocator.make!DebugCondition; const d = expect(tok!"debug"); mixin (nullCheck!`d`); node.debugIndex = d.index; if (currentIs(tok!"(")) { advance(); if (currentIsOneOf(tok!"intLiteral", tok!"identifier")) node.identifierOrInteger = advance(); else { error(`Integer literal or identifier expected`); return null; } mixin(tokenCheck!")"); } return node; } /** * Parses a DebugSpecification * * $(GRAMMAR $(RULEDEF debugSpecification): * $(LITERAL 'debug') $(LITERAL '=') ($(LITERAL Identifier) | $(LITERAL IntegerLiteral)) $(LITERAL ';') * ;) */ DebugSpecification parseDebugSpecification() { mixin(traceEnterAndExit!(__FUNCTION__)); auto node = allocator.make!DebugSpecification; mixin(tokenCheck!"debug"); mixin(tokenCheck!"="); if (currentIsOneOf(tok!"identifier", tok!"intLiteral")) node.identifierOrInteger = advance(); else { error("Integer literal or identifier expected"); return null; } mixin(tokenCheck!";"); return node; } /** * Parses a Declaration * * Params: * strict = if true, do not return partial AST nodes on errors. * mustBeDeclaration = do not parse as a declaration if it could be parsed as a function call * * $(GRAMMAR $(RULEDEF declaration): * $(RULE attribute)* $(RULE declaration2) * | $(RULE attribute)+ $(LITERAL '{') $(RULE declaration)* $(LITERAL '}') * ; * $(RULEDEF declaration2): * $(RULE aliasDeclaration) * | $(RULE aliasThisDeclaration) * | $(RULE anonymousEnumDeclaration) * | $(RULE attributeDeclaration) * | $(RULE classDeclaration) * | $(RULE conditionalDeclaration) * | $(RULE constructor) * | $(RULE debugSpecification) * | $(RULE destructor) * | $(RULE enumDeclaration) * | $(RULE eponymousTemplateDeclaration) * | $(RULE functionDeclaration) * | $(RULE importDeclaration) * | $(RULE interfaceDeclaration) * | $(RULE invariant) * | $(RULE mixinDeclaration) * | $(RULE mixinTemplateDeclaration) * | $(RULE pragmaDeclaration) * | $(RULE sharedStaticConstructor) * | $(RULE sharedStaticDestructor) * | $(RULE staticAssertDeclaration) * | $(RULE staticConstructor) * | $(RULE staticDestructor) * | $(RULE structDeclaration) * | $(RULE templateDeclaration) * | $(RULE unionDeclaration) * | $(RULE unittest) * | $(RULE variableDeclaration) * | $(RULE versionSpecification) * ;) */ Declaration parseDeclaration(bool strict = false, bool mustBeDeclaration = false) { mixin(traceEnterAndExit!(__FUNCTION__)); auto node = allocator.make!Declaration; if (!moreTokens) { error("declaration expected instead of EOF"); return null; } if (current.comment !is null) comment = current.comment; size_t autoStorageClassStart = size_t.max; DecType isAuto; StackBuffer attributes; do { isAuto = isAutoDeclaration(autoStorageClassStart); if (isAuto != DecType.other && index == autoStorageClassStart) break; if (!isAttribute()) break; immutable c = allocator.setCheckpoint(); auto attr = parseAttribute(); if (attr is null) { allocator.rollback(c); break; } if (currentIs(tok!":")) { node.attributeDeclaration = parseAttributeDeclaration(attr); mixin(nullCheck!`node.attributeDeclaration`); ownArray(node.attributes, attributes); return node; } else attributes.put(attr); } while (moreTokens()); ownArray(node.attributes, attributes); if (!moreTokens) { error("declaration expected instead of EOF"); return null; } if (!currentIs(tok!"enum")) // #165: handle enums separatly b/c of EponymousTemplateDeclaration { if (isAuto == DecType.autoVar) { mixin(nullCheck!`node.variableDeclaration = parseVariableDeclaration(null, true)`); return node; } else if (isAuto == DecType.autoFun) { mixin(nullCheck!`node.functionDeclaration = parseFunctionDeclaration(null, true)`); return node; } } switch (current.type) { case tok!"asm": case tok!"break": case tok!"case": case tok!"continue": case tok!"default": case tok!"do": case tok!"for": case tok!"foreach": case tok!"foreach_reverse": case tok!"goto": case tok!"if": case tok!"return": case tok!"switch": case tok!"throw": case tok!"try": case tok!"while": case tok!"assert": goto default; case tok!";": // http://d.puremagic.com/issues/show_bug.cgi?id=4559 warn("Empty declaration"); advance(); break; case tok!"{": if (node.attributes.empty) { error("declaration expected instead of `{`"); return null; } advance(); StackBuffer declarations; while (moreTokens() && !currentIs(tok!"}")) { auto c = allocator.setCheckpoint(); if (!declarations.put(parseDeclaration(strict))) { allocator.rollback(c); return null; } } ownArray(node.declarations, declarations); mixin(tokenCheck!"}"); break; case tok!"alias": if (startsWith(tok!"alias", tok!"identifier", tok!"this")) mixin(parseNodeQ!(`node.aliasThisDeclaration`, `AliasThisDeclaration`)); else mixin(parseNodeQ!(`node.aliasDeclaration`, `AliasDeclaration`)); break; case tok!"class": mixin(parseNodeQ!(`node.classDeclaration`, `ClassDeclaration`)); break; case tok!"this": if (!mustBeDeclaration && peekIs(tok!"(")) { // Do not parse as a declaration if we could parse as a function call. ++index; const past = peekPastParens(); --index; if (past !is null && past.type == tok!";") return null; } if (startsWith(tok!"this", tok!"(", tok!"this", tok!")")) mixin(parseNodeQ!(`node.postblit`, `Postblit`)); else mixin(parseNodeQ!(`node.constructor`, `Constructor`)); break; case tok!"~": mixin(parseNodeQ!(`node.destructor`, `Destructor`)); break; case tok!"enum": immutable b = setBookmark(); advance(); // enum if (currentIsOneOf(tok!":", tok!"{")) { goToBookmark(b); mixin(parseNodeQ!(`node.anonymousEnumDeclaration`, `AnonymousEnumDeclaration`)); } else if (currentIs(tok!"identifier")) { advance(); if (currentIs(tok!"(")) { skipParens(); // () if (currentIs(tok!"(")) skipParens(); if (!currentIs(tok!"=")) { goToBookmark(b); node.functionDeclaration = parseFunctionDeclaration(null, true, node.attributes); mixin (nullCheck!`node.functionDeclaration`); } else { goToBookmark(b); mixin(parseNodeQ!(`node.eponymousTemplateDeclaration`, `EponymousTemplateDeclaration`)); } } else if (currentIsOneOf(tok!":", tok!"{", tok!";")) { goToBookmark(b); mixin(parseNodeQ!(`node.enumDeclaration`, `EnumDeclaration`)); } else { immutable bool eq = currentIs(tok!"="); goToBookmark(b); mixin (nullCheck!`node.variableDeclaration = parseVariableDeclaration(null, eq)`); } } else { immutable bool s = isStorageClass(); goToBookmark(b); mixin (nullCheck!`node.variableDeclaration = parseVariableDeclaration(null, s)`); } break; case tok!"import": mixin(parseNodeQ!(`node.importDeclaration`, `ImportDeclaration`)); break; case tok!"interface": mixin(parseNodeQ!(`node.interfaceDeclaration`, `InterfaceDeclaration`)); break; case tok!"mixin": if (peekIs(tok!"template")) mixin(parseNodeQ!(`node.mixinTemplateDeclaration`, `MixinTemplateDeclaration`)); else { immutable b = setBookmark(); advance(); if (currentIs(tok!"(")) { const t = peekPastParens(); if (t !is null && t.type == tok!";") { goToBookmark(b); mixin(parseNodeQ!(`node.mixinDeclaration`, `MixinDeclaration`)); } else { goToBookmark(b); error("Declaration expected"); return null; } } else { goToBookmark(b); mixin(parseNodeQ!(`node.mixinDeclaration`, `MixinDeclaration`)); } } break; case tok!"pragma": mixin(parseNodeQ!(`node.pragmaDeclaration`, `PragmaDeclaration`)); break; case tok!"shared": if (startsWith(tok!"shared", tok!"static", tok!"this")) mixin(parseNodeQ!(`node.sharedStaticConstructor`, `SharedStaticConstructor`)); else if (startsWith(tok!"shared", tok!"static", tok!"~")) mixin(parseNodeQ!(`node.sharedStaticDestructor`, `SharedStaticDestructor`)); else goto type; break; case tok!"static": if (peekIs(tok!"this")) mixin(parseNodeQ!(`node.staticConstructor`, `StaticConstructor`)); else if (peekIs(tok!"~")) mixin(parseNodeQ!(`node.staticDestructor`, `StaticDestructor`)); else if (peekIs(tok!"if")) mixin (nullCheck!`node.conditionalDeclaration = parseConditionalDeclaration(strict)`); else if (peekIs(tok!"assert")) mixin(parseNodeQ!(`node.staticAssertDeclaration`, `StaticAssertDeclaration`)); else if (peekIs(tok!"foreach") || peekIs(tok!"foreach_reverse")) mixin(parseNodeQ!(`node.staticForeachDeclaration`, `StaticForeachDeclaration`)); else goto type; break; case tok!"struct": mixin(parseNodeQ!(`node.structDeclaration`, `StructDeclaration`)); break; case tok!"template": mixin(parseNodeQ!(`node.templateDeclaration`, `TemplateDeclaration`)); break; case tok!"union": mixin(parseNodeQ!(`node.unionDeclaration`, `UnionDeclaration`)); break; case tok!"invariant": mixin(parseNodeQ!(`node.invariant_`, `Invariant`)); break; case tok!"unittest": mixin(parseNodeQ!(`node.unittest_`, `Unittest`)); break; case tok!"identifier": case tok!".": case tok!"const": case tok!"immutable": case tok!"inout": case tok!"scope": case tok!"typeof": case tok!"__vector": foreach (B; BasicTypes) { case B: } type: Type t = parseType(); if (t is null || !currentIs(tok!"identifier")) { if (t) error("no identifier for declarator"); return null; } if (peekIs(tok!"(")) mixin (nullCheck!`node.functionDeclaration = parseFunctionDeclaration(t, false)`); else mixin (nullCheck!`node.variableDeclaration = parseVariableDeclaration(t, false)`); break; case tok!"version": if (peekIs(tok!"(")) mixin (nullCheck!`node.conditionalDeclaration = parseConditionalDeclaration(strict)`); else if (peekIs(tok!"=")) mixin(parseNodeQ!(`node.versionSpecification`, `VersionSpecification`)); else { error("`=` or `(` expected following `version`"); return null; } break; case tok!"debug": if (peekIs(tok!"=")) mixin(parseNodeQ!(`node.debugSpecification`, `DebugSpecification`)); else mixin (nullCheck!`node.conditionalDeclaration = parseConditionalDeclaration(strict)`); break; default: error("Declaration expected"); return null; } return node; } /** * Parses DeclarationsAndStatements * * $(GRAMMAR $(RULEDEF declarationsAndStatements): * $(RULE declarationOrStatement)+ * ;) */ DeclarationsAndStatements parseDeclarationsAndStatements(bool includeCases = true) { mixin(traceEnterAndExit!(__FUNCTION__)); auto node = allocator.make!DeclarationsAndStatements; StackBuffer declarationsAndStatements; while (!currentIsOneOf(tok!"}", tok!"else") && moreTokens() && suppressedErrorCount <= MAX_ERRORS) { if (currentIs(tok!"case") && !includeCases) break; if (currentIs(tok!"while")) { immutable b = setBookmark(); scope (exit) goToBookmark(b); advance(); if (currentIs(tok!"(")) { const p = peekPastParens(); if (p !is null && *p == tok!";") break; } } immutable c = allocator.setCheckpoint(); if (!declarationsAndStatements.put(parseDeclarationOrStatement())) { allocator.rollback(c); if (suppressMessages > 0) return null; } } ownArray(node.declarationsAndStatements, declarationsAndStatements); return node; } /** * Parses a DeclarationOrStatement * * $(GRAMMAR $(RULEDEF declarationOrStatement): * $(RULE declaration) * | $(RULE statement) * ;) */ DeclarationOrStatement parseDeclarationOrStatement() { mixin(traceEnterAndExit!(__FUNCTION__)); auto node = allocator.make!DeclarationOrStatement; if (moreTokens) node.startLocation = current.index; // "Any ambiguities in the grammar between Statements and // Declarations are resolved by the declarations taking precedence." immutable b = setBookmark(); immutable c = allocator.setCheckpoint(); auto d = parseDeclaration(true, false); if (d is null) { allocator.rollback(c); goToBookmark(b); mixin(parseNodeQ!(`node.statement`, `Statement`)); } else { // TODO: Make this more efficient. Right now we parse the declaration // twice, once with errors and warnings ignored, and once with them // printed. Maybe store messages to then be abandoned or written later? allocator.rollback(c); goToBookmark(b); node.declaration = parseDeclaration(true, true); } if (moreTokens) node.endLocation = current.index; return node; } /** * Parses a Declarator * * $(GRAMMAR $(RULEDEF declarator): * $(LITERAL Identifier) * | $(LITERAL Identifier) $(LITERAL '=') $(RULE initializer) * | $(LITERAL Identifier) $(RULE templateParameters) $(LITERAL '=') $(RULE initializer) * ;) */ Declarator parseDeclarator() { mixin(traceEnterAndExit!(__FUNCTION__)); auto node = allocator.make!Declarator; const id = expect(tok!"identifier"); mixin (nullCheck!`id`); node.name = *id; if (currentIs(tok!"[")) // dmd doesn't accept pointer after identifier { warn("C-style array declaration."); StackBuffer typeSuffixes; while (moreTokens() && currentIs(tok!"[")) if (!typeSuffixes.put(parseTypeSuffix())) return null; ownArray(node.cstyle, typeSuffixes); } if (currentIs(tok!"(")) { mixin (nullCheck!`(node.templateParameters = parseTemplateParameters())`); mixin(tokenCheck!"="); mixin (nullCheck!`(node.initializer = parseInitializer())`); } else if (currentIs(tok!"=")) { advance(); mixin(parseNodeQ!(`node.initializer`, `Initializer`)); } return node; } /** * Parses a DeclaratorIdentifierList * * $(GRAMMAR $(RULEDEF declaratorIdentifierList): * $(LITERAL Identifier) ($(LITERAL ',') $(LITERAL Identifier))* * ;) */ DeclaratorIdentifierList parseDeclaratorIdentifierList() { auto node = allocator.make!DeclaratorIdentifierList; StackBuffer identifiers; while (moreTokens()) { const ident = expect(tok!"identifier"); mixin(nullCheck!`ident`); identifiers.put(*ident); if (currentIs(tok!",")) { advance(); continue; } else break; } ownArray(node.identifiers, identifiers); return node; } /** * Parses a DefaultStatement * * $(GRAMMAR $(RULEDEF defaultStatement): * $(LITERAL 'default') $(LITERAL ':') $(RULE declarationsAndStatements) * ;) */ DefaultStatement parseDefaultStatement() { mixin(traceEnterAndExit!(__FUNCTION__)); auto node = allocator.make!DefaultStatement; mixin(tokenCheck!"default"); const colon = expect(tok!":"); if (colon is null) return null; node.colonLocation = colon.index; mixin(parseNodeQ!(`node.declarationsAndStatements`, `DeclarationsAndStatements`)); return node; } /** * Parses a DeleteExpression * * $(GRAMMAR $(RULEDEF deleteExpression): * $(LITERAL 'delete') $(RULE unaryExpression) * ;) */ DeleteExpression parseDeleteExpression() { mixin(traceEnterAndExit!(__FUNCTION__)); auto node = allocator.make!DeleteExpression; node.line = current.line; node.column = current.column; mixin(tokenCheck!"delete"); mixin(parseNodeQ!(`node.unaryExpression`, `UnaryExpression`)); return node; } /** * Parses a Deprecated attribute * * $(GRAMMAR $(RULEDEF deprecated): * $(LITERAL 'deprecated') ($(LITERAL '$(LPAREN)') $(LITERAL StringLiteral)+ $(LITERAL '$(RPAREN)'))? * ;) */ Deprecated parseDeprecated() { mixin(traceEnterAndExit!(__FUNCTION__)); auto node = allocator.make!Deprecated; mixin(tokenCheck!"deprecated"); if (currentIs(tok!"(")) { advance(); mixin (parseNodeQ!(`node.assignExpression`, `AssignExpression`)); mixin (tokenCheck!")"); } return node; } /** * Parses a Destructor * * $(GRAMMAR $(RULEDEF destructor): * $(LITERAL '~') $(LITERAL 'this') $(LITERAL '$(LPAREN)') $(LITERAL '$(RPAREN)') $(RULE memberFunctionAttribute)* ($(RULE functionBody) | $(LITERAL ';')) * ;) */ Destructor parseDestructor() { mixin(traceEnterAndExit!(__FUNCTION__)); auto node = allocator.make!Destructor; node.comment = comment; comment = null; mixin(tokenCheck!"~"); if (!moreTokens) { error("`this` expected"); return null; } node.index = current.index; node.line = current.line; node.column = current.column; mixin(tokenCheck!"this"); mixin(tokenCheck!"("); mixin(tokenCheck!")"); if (currentIs(tok!";")) advance(); else { StackBuffer memberFunctionAttributes; while (moreTokens() && currentIsMemberFunctionAttribute()) if (!memberFunctionAttributes.put(parseMemberFunctionAttribute())) return null; ownArray(node.memberFunctionAttributes, memberFunctionAttributes); mixin(parseNodeQ!(`node.functionBody`, `FunctionBody`)); } return node; } /** * Parses a DoStatement * * $(GRAMMAR $(RULEDEF doStatement): * $(LITERAL 'do') $(RULE statementNoCaseNoDefault) $(LITERAL 'while') $(LITERAL '$(LPAREN)') $(RULE expression) $(LITERAL '$(RPAREN)') $(LITERAL ';') * ;) */ DoStatement parseDoStatement() { mixin(traceEnterAndExit!(__FUNCTION__)); mixin(tokenCheck!"do"); if (!moreTokens) return null; auto node = allocator.make!DoStatement; mixin(parseNodeQ!(`node.statementNoCaseNoDefault`, `StatementNoCaseNoDefault`)); mixin(tokenCheck!"while"); mixin(tokenCheck!"("); mixin(parseNodeQ!(`node.expression`, `Expression`)); mixin(tokenCheck!")"); mixin(tokenCheck!";"); return node; } /** * Parses an EnumBody * * $(GRAMMAR $(RULEDEF enumBody): * $(LITERAL '{') $(RULE enumMember) ($(LITERAL ',') $(RULE enumMember)?)* $(LITERAL '}') * ;) */ EnumBody parseEnumBody() { mixin(traceEnterAndExit!(__FUNCTION__)); EnumBody node = allocator.make!EnumBody; const open = expect(tok!"{"); mixin (nullCheck!`open`); node.startLocation = open.index; StackBuffer enumMembers; EnumMember last; while (moreTokens()) { if (currentIs(tok!"identifier")) { auto c = allocator.setCheckpoint(); auto e = parseEnumMember(); if (!enumMembers.put(e)) allocator.rollback(c); else last = e; if (currentIs(tok!",")) { if (last !is null && last.comment is null) last.comment = current.trailingComment; advance(); if (!currentIs(tok!"}")) continue; } if (currentIs(tok!"}")) { if (last !is null && last.comment is null) last.comment = tokens[index - 1].trailingComment; break; } else { error("`,` or `}` expected"); if (currentIs(tok!"}")) break; } } else error("Enum member expected"); } ownArray(node.enumMembers, enumMembers); const close = expect (tok!"}"); if (close !is null) node.endLocation = close.index; return node; } /** * $(GRAMMAR $(RULEDEF anonymousEnumMember): * $(RULE type) $(LITERAL identifier) $(LITERAL '=') $(RULE assignExpression) * | $(LITERAL identifier) $(LITERAL '=') $(RULE assignExpression) * | $(LITERAL identifier) * ;) */ AnonymousEnumMember parseAnonymousEnumMember(bool typeAllowed) { mixin(traceEnterAndExit!(__FUNCTION__)); auto node = allocator.make!AnonymousEnumMember; if (currentIs(tok!"identifier") && peekIsOneOf(tok!",", tok!"=", tok!"}")) { node.comment = current.comment; mixin(tokenCheck!(`node.name`, `identifier`)); if (currentIs(tok!"=")) { advance(); // = goto assign; } } else if (typeAllowed) { node.comment = current.comment; mixin(parseNodeQ!(`node.type`, `Type`)); mixin(tokenCheck!(`node.name`, `identifier`)); mixin(tokenCheck!"="); assign: mixin(parseNodeQ!(`node.assignExpression`, `AssignExpression`)); } else { error("Cannot specify anonymous enum member type if anonymous enum has a base type."); return null; } return node; } /** * $(GRAMMAR $(RULEDEF anonymousEnumDeclaration): * $(LITERAL 'enum') ($(LITERAL ':') $(RULE type))? $(LITERAL '{') $(RULE anonymousEnumMember)+ $(LITERAL '}') * ;) */ AnonymousEnumDeclaration parseAnonymousEnumDeclaration() { mixin(traceEnterAndExit!(__FUNCTION__)); auto node = allocator.make!AnonymousEnumDeclaration; mixin(tokenCheck!"enum"); immutable bool hasBaseType = currentIs(tok!":"); if (hasBaseType) { advance(); mixin(parseNodeQ!(`node.baseType`, `Type`)); } mixin(tokenCheck!"{"); StackBuffer members; AnonymousEnumMember last; while (moreTokens()) { if (currentIs(tok!",")) { if (last !is null && last.comment is null) last.comment = current.trailingComment; advance(); continue; } else if (currentIs(tok!"}")) { if (last !is null && last.comment is null) last.comment = tokens[index - 1].trailingComment; break; } else { immutable c = allocator.setCheckpoint(); auto e = parseAnonymousEnumMember(!hasBaseType); if (!members.put(e)) allocator.rollback(c); else last = e; } } ownArray(node.members, members); mixin(tokenCheck!"}"); return node; } /** * Parses an EnumDeclaration * * $(GRAMMAR $(RULEDEF enumDeclaration): * $(LITERAL 'enum') $(LITERAL Identifier) ($(LITERAL ':') $(RULE type))? $(LITERAL ';') * | $(LITERAL 'enum') $(LITERAL Identifier) ($(LITERAL ':') $(RULE type))? $(RULE enumBody) * ;) */ EnumDeclaration parseEnumDeclaration() { mixin(traceEnterAndExit!(__FUNCTION__)); auto node = allocator.make!EnumDeclaration; mixin(tokenCheck!"enum"); mixin (tokenCheck!(`node.name`, `identifier`)); node.comment = comment; comment = null; if (currentIs(tok!";")) { advance(); return node; } if (currentIs(tok!":")) { advance(); // skip ':' mixin(parseNodeQ!(`node.type`, `Type`)); } mixin(parseNodeQ!(`node.enumBody`, `EnumBody`)); return node; } /** * Parses an EnumMember * * $(GRAMMAR $(RULEDEF enumMember): * $(LITERAL Identifier) * | $(LITERAL Identifier) $(LITERAL '=') $(RULE assignExpression) * ;) */ EnumMember parseEnumMember() { mixin(traceEnterAndExit!(__FUNCTION__)); auto node = allocator.make!EnumMember; node.comment = current.comment; mixin (tokenCheck!(`node.name`, `identifier`)); if (currentIs(tok!"=")) { advance(); mixin(parseNodeQ!(`node.assignExpression`, `AssignExpression`)); } return node; } /** * Parses an EponymousTemplateDeclaration * * $(GRAMMAR $(RULEDEF eponymousTemplateDeclaration): * $(LITERAL 'enum') $(LITERAL Identifier) $(RULE templateParameters) $(LITERAL '=') $(RULE assignExpression) $(LITERAL ';') * ;) */ EponymousTemplateDeclaration parseEponymousTemplateDeclaration() { mixin(traceEnterAndExit!(__FUNCTION__)); auto node = allocator.make!EponymousTemplateDeclaration; node.comment = current.comment; advance(); // enum const ident = expect(tok!"identifier"); mixin (nullCheck!`ident`); node.name = *ident; mixin(parseNodeQ!(`node.templateParameters`, `TemplateParameters`)); expect(tok!"="); node.assignExpression = parseAssignExpression(); if (node.assignExpression is null) mixin(parseNodeQ!(`node.type`, `Type`)); expect(tok!";"); return node; } /** * Parses an EqualExpression * * $(GRAMMAR $(RULEDEF equalExpression): * $(RULE shiftExpression) ($(LITERAL '==') | $(LITERAL '!=')) $(RULE shiftExpression) * ;) */ EqualExpression parseEqualExpression(ExpressionNode shift = null) { mixin(traceEnterAndExit!(__FUNCTION__)); auto node = allocator.make!EqualExpression; node.left = shift is null ? parseShiftExpression() : shift; mixin (nullCheck!`node.left`); if (currentIsOneOf(tok!"==", tok!"!=")) node.operator = advance().type; mixin(parseNodeQ!(`node.right`, `ShiftExpression`)); return node; } /** * Parses an Expression * * $(GRAMMAR $(RULEDEF expression): * $(RULE assignExpression) ($(LITERAL ',') $(RULE assignExpression))* * ;) */ Expression parseExpression() { mixin(traceEnterAndExit!(__FUNCTION__)); if (suppressedErrorCount > MAX_ERRORS) return null; if (!moreTokens()) { error("Expected expression instead of EOF"); return null; } return parseCommaSeparatedRule!(Expression, AssignExpression, true)(); } /** * Parses an ExpressionStatement * * $(GRAMMAR $(RULEDEF expressionStatement): * $(RULE _expression) $(LITERAL ';') * ;) */ ExpressionStatement parseExpressionStatement(Expression expression = null) { mixin(traceEnterAndExit!(__FUNCTION__)); auto node = allocator.make!ExpressionStatement; node.expression = expression is null ? parseExpression() : expression; if (node.expression is null || expect(tok!";") is null) return null; return node; } /** * Parses a FinalSwitchStatement * * $(GRAMMAR $(RULEDEF finalSwitchStatement): * $(LITERAL 'final') $(RULE switchStatement) * ;) */ FinalSwitchStatement parseFinalSwitchStatement() { mixin(traceEnterAndExit!(__FUNCTION__)); mixin (simpleParse!(FinalSwitchStatement, tok!"final", "switchStatement|parseSwitchStatement")); } /** * Parses a Finally * * $(GRAMMAR $(RULEDEF finally): * $(LITERAL 'finally') $(RULE declarationOrStatement) * ;) */ Finally parseFinally() { mixin(traceEnterAndExit!(__FUNCTION__)); auto node = allocator.make!Finally; mixin(tokenCheck!"finally"); mixin(parseNodeQ!(`node.declarationOrStatement`, `DeclarationOrStatement`)); return node; } /** * Parses a ForStatement * * $(GRAMMAR $(RULEDEF forStatement): * $(LITERAL 'for') $(LITERAL '$(LPAREN)') ($(RULE declaration) | $(RULE statementNoCaseNoDefault)) $(RULE expression)? $(LITERAL ';') $(RULE expression)? $(LITERAL '$(RPAREN)') $(RULE declarationOrStatement) * ;) */ ForStatement parseForStatement() { mixin(traceEnterAndExit!(__FUNCTION__)); auto node = allocator.make!ForStatement; mixin(tokenCheck!"for"); if (moreTokens) node.startIndex = current().index; mixin(tokenCheck!"("); if (currentIs(tok!";")) advance(); else mixin(parseNodeQ!(`node.initialization`, `DeclarationOrStatement`)); if (currentIs(tok!";")) advance(); else { mixin(parseNodeQ!(`node.test`, `Expression`)); expect(tok!";"); } if (!currentIs(tok!")")) mixin(parseNodeQ!(`node.increment`, `Expression`)); mixin(tokenCheck!")"); // Intentionally return an incomplete parse tree so that DCD will work // more correctly. if (currentIs(tok!"}")) { error("Statement expected", false); return node; } mixin(parseNodeQ!(`node.declarationOrStatement`, `DeclarationOrStatement`)); return node; } /** * Parses a StaticForeachDeclaration * * $(GRAMMAR $(RULEDEF staticForeachDeclaration): * $(LITERAL 'static') ($(LITERAL 'foreach') | $(LITERAL 'foreach_reverse')) $(LITERAL '$(LPAREN)') $(RULE foreachTypeList) $(LITERAL ';') $(RULE expression) $(LITERAL '$(RPAREN)') ($(RULE declaration) | $(LITERAL '{') $(RULE declaration)* $(LITERAL '}')) * | $(LITERAL 'static') ($(LITERAL 'foreach') | $(LITERAL 'foreach_reverse')) $(LITERAL '$(LPAREN)') $(RULE foreachType) $(LITERAL ';') $(RULE expression) $(LITERAL '..') $(RULE expression) $(LITERAL '$(RPAREN)') ($(RULE declaration) | $(LITERAL '{') $(RULE declaration)* $(LITERAL '}')) * ;) */ StaticForeachDeclaration parseStaticForeachDeclaration() { mixin(traceEnterAndExit!(__FUNCTION__)); mixin(tokenCheck!"static"); return parseForeach!true(); } /** * Parses a StaticForeachStatement * * $(GRAMMAR $(RULEDEF staticForeachStatement): * $(LITERAL 'static') $(RULE foreachStatement) * ;) */ StaticForeachStatement parseStaticForeachStatement() { mixin(traceEnterAndExit!(__FUNCTION__)); mixin(simpleParse!(StaticForeachStatement, tok!"static", "foreachStatement|parseForeachStatement")); } /** * Parses a ForeachStatement * * $(GRAMMAR $(RULEDEF foreachStatement): * ($(LITERAL 'foreach') | $(LITERAL 'foreach_reverse')) $(LITERAL '$(LPAREN)') $(RULE foreachTypeList) $(LITERAL ';') $(RULE expression) $(LITERAL '$(RPAREN)') $(RULE declarationOrStatement) * | ($(LITERAL 'foreach') | $(LITERAL 'foreach_reverse')) $(LITERAL '$(LPAREN)') $(RULE foreachType) $(LITERAL ';') $(RULE expression) $(LITERAL '..') $(RULE expression) $(LITERAL '$(RPAREN)') $(RULE declarationOrStatement) * ;) */ ForeachStatement parseForeachStatement() { mixin(traceEnterAndExit!(__FUNCTION__)); return parseForeach!false(); } Foreach!declOnly parseForeach(bool declOnly = false)() { mixin(traceEnterAndExit!(__FUNCTION__)); Foreach!declOnly node = allocator.make!(Foreach!declOnly); if (currentIsOneOf(tok!"foreach", tok!"foreach_reverse")) node.type = advance().type; else { error("`foreach` or `foreach_reverse` expected"); return null; } if (moreTokens) node.startIndex = current().index; mixin(tokenCheck!"("); ForeachTypeList feType = parseForeachTypeList(); mixin (nullCheck!`feType`); immutable bool canBeRange = feType.items.length == 1; mixin(tokenCheck!";"); mixin(parseNodeQ!(`node.low`, `Expression`)); mixin (nullCheck!`node.low`); if (currentIs(tok!"..")) { if (!canBeRange) { error(`Cannot have more than one foreach variable for a foreach range statement`); return null; } advance(); mixin(parseNodeQ!(`node.high`, `Expression`)); node.foreachType = feType.items[0]; mixin (nullCheck!`node.high`); } else { node.foreachTypeList = feType; } mixin(tokenCheck!")"); if (currentIs(tok!"}")) { error("Statement expected", false); return node; // this line makes DCD better } static if (declOnly) { StackBuffer declarations; if (currentIs(tok!"{")) { advance(); while (moreTokens() && !currentIs(tok!"}")) { immutable b = setBookmark(); immutable c = allocator.setCheckpoint(); if (declarations.put(parseDeclaration(true, true))) abandonBookmark(b); else { goToBookmark(b); allocator.rollback(c); return null; } } mixin(tokenCheck!"}"); } else if (!declarations.put(parseDeclaration(true, true))) return null; ownArray(node.declarations, declarations); } else mixin(parseNodeQ!(`node.declarationOrStatement`, `DeclarationOrStatement`)); return node; } /** * Parses a ForeachType * * $(GRAMMAR $(RULEDEF foreachType): * ($(LITERAL 'ref') | $(LITERAL 'alias') | $(LITERAL 'enum') | $(RULE typeConstructor))* $(RULE type)? $(LITERAL Identifier) * ;) */ ForeachType parseForeachType() { mixin(traceEnterAndExit!(__FUNCTION__)); auto node = allocator.make!ForeachType; while (moreTokens()) { IdType typeConstructor; if (currentIs(tok!"ref")) { node.isRef = true; advance(); } else if (currentIs(tok!"alias")) { node.isAlias = true; advance(); } else if (currentIs(tok!"enum")) { node.isEnum = true; advance(); } else if (tok!"" != (typeConstructor = parseTypeConstructor(false))) { trace("\033[01;36mType constructor"); node.typeConstructors ~= typeConstructor; } else break; } if (currentIs(tok!"identifier") && peekIsOneOf(tok!",", tok!";")) { node.identifier = advance(); return node; } mixin(parseNodeQ!(`node.type`, `Type`)); const ident = expect(tok!"identifier"); mixin(nullCheck!`ident`); node.identifier = *ident; return node; } /** * Parses a ForeachTypeList * * $(GRAMMAR $(RULEDEF foreachTypeList): * $(RULE foreachType) ($(LITERAL ',') $(RULE foreachType))* * ;) */ ForeachTypeList parseForeachTypeList() { mixin(traceEnterAndExit!(__FUNCTION__)); return parseCommaSeparatedRule!(ForeachTypeList, ForeachType)(); } /** * Parses a FunctionAttribute * * $(GRAMMAR $(RULEDEF functionAttribute): * $(RULE atAttribute) * | $(LITERAL 'pure') * | $(LITERAL 'nothrow') * ;) */ FunctionAttribute parseFunctionAttribute(bool validate = true) { auto node = allocator.make!FunctionAttribute; switch (current.type) { case tok!"@": mixin(parseNodeQ!(`node.atAttribute`, `AtAttribute`)); break; case tok!"pure": case tok!"nothrow": node.token = advance(); break; default: if (validate) error("`@`attribute, `pure`, or `nothrow` expected"); return null; } return node; } /** * Parses a FunctionBody * * $(GRAMMAR $(RULEDEF functionBody): * $(RULE blockStatement) * | ($(RULE inStatement) | $(RULE outStatement) | $(RULE outStatement) $(RULE inStatement) | $(RULE inStatement) $(RULE outStatement))? $(RULE bodyStatement)? * ;) */ FunctionBody parseFunctionBody() { mixin(traceEnterAndExit!(__FUNCTION__)); auto node = allocator.make!FunctionBody; if (currentIs(tok!";")) { advance(); return node; } else if (currentIs(tok!"{")) mixin(parseNodeQ!(`node.blockStatement`, `BlockStatement`)); else if (currentIsOneOf(tok!"in", tok!"out", tok!"do") || current.text == "body") { if (currentIs(tok!"in")) { mixin(parseNodeQ!(`node.inStatement`, `InStatement`)); if (currentIs(tok!"out")) mixin(parseNodeQ!(`node.outStatement`, `OutStatement`)); } else if (currentIs(tok!"out")) { mixin(parseNodeQ!(`node.outStatement`, `OutStatement`)); if (currentIs(tok!"in")) mixin(parseNodeQ!(`node.inStatement`, `InStatement`)); } // Allow function bodies without body statements because this is // valid inside of interfaces. if (currentIsOneOf(tok!"do") || current.text == "body") mixin(parseNodeQ!(`node.bodyStatement`, `BodyStatement`)); } else { error("`in`, `out`, `body`, or block statement expected"); return null; } return node; } /** * Parses a FunctionCallExpression * * $(GRAMMAR $(RULEDEF functionCallExpression): * $(RULE symbol) $(RULE arguments) * | $(RULE unaryExpression) $(RULE arguments) * | $(RULE type) $(RULE arguments) * ;) */ FunctionCallExpression parseFunctionCallExpression(UnaryExpression unary = null) { mixin(traceEnterAndExit!(__FUNCTION__)); auto node = allocator.make!FunctionCallExpression; switch (current.type) { case tok!"const": case tok!"immutable": case tok!"inout": case tok!"shared": case tok!"scope": case tok!"pure": case tok!"nothrow": mixin(parseNodeQ!(`node.type`, `Type`)); mixin(parseNodeQ!(`node.arguments`, `Arguments`)); break; default: if (unary !is null) node.unaryExpression = unary; else mixin(parseNodeQ!(`node.unaryExpression`, `UnaryExpression`)); if (currentIs(tok!"!")) mixin(parseNodeQ!(`node.templateArguments`, `TemplateArguments`)); if (unary !is null) mixin(parseNodeQ!(`node.arguments`, `Arguments`)); } return node; } /** * Parses a FunctionDeclaration * * $(GRAMMAR $(RULEDEF functionDeclaration): * ($(RULE storageClass)+ | $(RULE _type)) $(LITERAL Identifier) $(RULE parameters) $(RULE memberFunctionAttribute)* ($(RULE functionBody) | $(LITERAL ';')) * | ($(RULE storageClass)+ | $(RULE _type)) $(LITERAL Identifier) $(RULE templateParameters) $(RULE parameters) $(RULE memberFunctionAttribute)* $(RULE constraint)? ($(RULE functionBody) | $(LITERAL ';')) * ;) */ FunctionDeclaration parseFunctionDeclaration(Type type = null, bool isAuto = false, Attribute[] attributes = null) { mixin(traceEnterAndExit!(__FUNCTION__)); auto node = allocator.make!FunctionDeclaration; node.comment = comment; comment = null; StackBuffer memberFunctionAttributes; node.attributes = attributes; if (isAuto) { StackBuffer storageClasses; while (isStorageClass()) if (!storageClasses.put(parseStorageClass())) return null; ownArray(node.storageClasses, storageClasses); foreach (a; node.attributes) { if (a.attribute == tok!"auto") node.hasAuto = true; else if (a.attribute == tok!"ref") node.hasRef = true; else continue; } } else { while (moreTokens() && currentIsMemberFunctionAttribute()) if (!memberFunctionAttributes.put(parseMemberFunctionAttribute())) return null; if (type is null) mixin(parseNodeQ!(`node.returnType`, `Type`)); else node.returnType = type; } mixin(tokenCheck!(`node.name`, "identifier")); if (!currentIs(tok!"(")) { error("`(` expected"); return null; } const p = peekPastParens(); immutable bool isTemplate = p !is null && p.type == tok!"("; if (isTemplate) mixin(parseNodeQ!(`node.templateParameters`, `TemplateParameters`)); mixin(parseNodeQ!(`node.parameters`, `Parameters`)); while (moreTokens() && currentIsMemberFunctionAttribute()) if (!memberFunctionAttributes.put(parseMemberFunctionAttribute())) return null; if (isTemplate && currentIs(tok!"if")) mixin(parseNodeQ!(`node.constraint`, `Constraint`)); if (currentIs(tok!";")) advance(); else mixin(parseNodeQ!(`node.functionBody`, `FunctionBody`)); ownArray(node.memberFunctionAttributes, memberFunctionAttributes); return node; } /** * Parses a FunctionLiteralExpression * * $(GRAMMAR $(RULEDEF functionLiteralExpression): * | $(LITERAL 'delegate') $(RULE type)? ($(RULE parameters) $(RULE functionAttribute)*)? $(RULE functionBody) * | $(LITERAL 'function') $(RULE type)? ($(RULE parameters) $(RULE functionAttribute)*)? $(RULE functionBody) * | $(RULE parameters) $(RULE functionAttribute)* $(RULE functionBody) * | $(RULE functionBody) * | $(LITERAL Identifier) $(LITERAL '=>') $(RULE assignExpression) * | $(LITERAL 'function') $(RULE type)? $(RULE parameters) $(RULE functionAttribute)* $(LITERAL '=>') $(RULE assignExpression) * | $(LITERAL 'delegate') $(RULE type)? $(RULE parameters) $(RULE functionAttribute)* $(LITERAL '=>') $(RULE assignExpression) * | $(RULE parameters) $(RULE functionAttribute)* $(LITERAL '=>') $(RULE assignExpression) * ;) */ FunctionLiteralExpression parseFunctionLiteralExpression() { mixin(traceEnterAndExit!(__FUNCTION__)); auto node = allocator.make!FunctionLiteralExpression; node.line = current.line; node.column = current.column; if (currentIsOneOf(tok!"function", tok!"delegate")) { node.functionOrDelegate = advance().type; if (!currentIsOneOf(tok!"(", tok!"in", tok!"do", tok!"out", tok!"{", tok!"=>") && current.text != "body") mixin(parseNodeQ!(`node.returnType`, `Type`)); } if (startsWith(tok!"identifier", tok!"=>")) { node.identifier = advance(); advance(); // => mixin(parseNodeQ!(`node.assignExpression`, `AssignExpression`)); return node; } else if (currentIs(tok!"(")) { mixin(parseNodeQ!(`node.parameters`, `Parameters`)); StackBuffer memberFunctionAttributes; while (currentIsMemberFunctionAttribute()) { auto c = allocator.setCheckpoint(); if (!memberFunctionAttributes.put(parseMemberFunctionAttribute())) { allocator.rollback(c); break; } } ownArray(node.memberFunctionAttributes, memberFunctionAttributes); } if (currentIs(tok!"=>")) { advance(); mixin(parseNodeQ!(`node.assignExpression`, `AssignExpression`)); } else mixin(parseNodeQ!(`node.functionBody`, `FunctionBody`)); return node; } /** * Parses a GotoStatement * * $(GRAMMAR $(RULEDEF gotoStatement): * $(LITERAL 'goto') ($(LITERAL Identifier) | $(LITERAL 'default') | $(LITERAL 'case') $(RULE expression)?) $(LITERAL ';') * ;) */ GotoStatement parseGotoStatement() { mixin(traceEnterAndExit!(__FUNCTION__)); auto node = allocator.make!GotoStatement; mixin(tokenCheck!"goto"); if (!moreTokens) return null; switch (current.type) { case tok!"identifier": case tok!"default": node.label = advance(); break; case tok!"case": node.label = advance(); if (!currentIs(tok!";")) mixin(parseNodeQ!(`node.expression`, `Expression`)); break; default: error("Identifier, `default`, or `case` expected"); return null; } mixin(tokenCheck!";"); return node; } /** * Parses an IdentifierChain * * $(GRAMMAR $(RULEDEF identifierChain): * $(LITERAL Identifier) ($(LITERAL '.') $(LITERAL Identifier))* * ;) */ IdentifierChain parseIdentifierChain() { auto node = allocator.make!IdentifierChain; StackBuffer identifiers; while (moreTokens()) { const ident = expect(tok!"identifier"); mixin(nullCheck!`ident`); identifiers.put(*ident); if (currentIs(tok!".")) { advance(); continue; } else break; } ownArray(node.identifiers, identifiers); return node; } /** * Parses a TypeIdentifierPart. * * $(GRAMMAR $(RULEDEF typeIdentifierPart): * $(RULE identifierOrTemplateInstance) * | $(RULE identifierOrTemplateInstance) $(LITERAL '.') $(RULE typeIdentifierPart) * | $(RULE identifierOrTemplateInstance) $(LITERAL '[') $(RULE assignExpression) $(LITERAL ']') $(LITERAL '.') $(RULE typeIdentifierPart) * ;) */ TypeIdentifierPart parseTypeIdentifierPart() { TypeIdentifierPart node = allocator.make!TypeIdentifierPart; if (currentIs(tok!".")) { node.dot = true; advance(); } mixin(parseNodeQ!(`node.identifierOrTemplateInstance`, `IdentifierOrTemplateInstance`)); if (currentIs(tok!"[")) { size_t c; const b = setBookmark(); advance(); if (!currentIs(tok!"]")) { node.indexer = parseAssignExpression(); if (node.indexer is null) { goToBookmark(b); return node; } c = allocator.setCheckpoint; } expect(tok!"]"); if (!currentIs(tok!".")) { if (node.indexer !is null) { allocator.rollback(c); node.indexer = null; } goToBookmark(b); } else { abandonBookmark(b); } } if (currentIs(tok!".")) { advance(); mixin(parseNodeQ!(`node.typeIdentifierPart`, `TypeIdentifierPart`)); } return node; } /** * Parses an IdentifierOrTemplateChain * * $(GRAMMAR $(RULEDEF identifierOrTemplateChain): * $(RULE identifierOrTemplateInstance) ($(LITERAL '.') $(RULE identifierOrTemplateInstance))* * ;) */ IdentifierOrTemplateChain parseIdentifierOrTemplateChain() { auto node = allocator.make!IdentifierOrTemplateChain; StackBuffer identifiersOrTemplateInstances; while (moreTokens()) { auto c = allocator.setCheckpoint(); if (!identifiersOrTemplateInstances.put(parseIdentifierOrTemplateInstance())) { allocator.rollback(c); if (identifiersOrTemplateInstances.length == 0) return null; else break; } if (!currentIs(tok!".")) break; else advance(); } ownArray(node.identifiersOrTemplateInstances, identifiersOrTemplateInstances); return node; } /** * Parses an IdentifierOrTemplateInstance * * $(GRAMMAR $(RULEDEF identifierOrTemplateInstance): * $(LITERAL Identifier) * | $(RULE templateInstance) * ;) */ IdentifierOrTemplateInstance parseIdentifierOrTemplateInstance() { mixin(traceEnterAndExit!(__FUNCTION__)); auto node = allocator.make!IdentifierOrTemplateInstance; if (peekIs(tok!"!") && !startsWith(tok!"identifier", tok!"!", tok!"is") && !startsWith(tok!"identifier", tok!"!", tok!"in")) { mixin(parseNodeQ!(`node.templateInstance`, `TemplateInstance`)); } else { const ident = expect(tok!"identifier"); mixin(nullCheck!`ident`); node.identifier = *ident; } return node; } /** * Parses an IdentityExpression * * $(GRAMMAR $(RULEDEF identityExpression): * $(RULE shiftExpression) ($(LITERAL 'is') | ($(LITERAL '!') $(LITERAL 'is'))) $(RULE shiftExpression) * ;) */ ExpressionNode parseIdentityExpression(ExpressionNode shift = null) { mixin(traceEnterAndExit!(__FUNCTION__)); auto node = allocator.make!IdentityExpression; mixin(nullCheck!`node.left = shift is null ? parseShiftExpression() : shift`); if (currentIs(tok!"!")) { advance(); node.negated = true; } mixin(tokenCheck!"is"); mixin(parseNodeQ!(`node.right`, `ShiftExpression`)); return node; } /** * Parses an IfStatement * * $(GRAMMAR $(RULEDEF ifStatement): * $(LITERAL 'if') $(LITERAL '$(LPAREN)') $(RULE ifCondition) $(LITERAL '$(RPAREN)') $(RULE declarationOrStatement) ($(LITERAL 'else') $(RULE declarationOrStatement))? *$(RULEDEF ifCondition): * $(LITERAL 'auto') $(LITERAL Identifier) $(LITERAL '=') $(RULE expression) * | $(RULE typeConstructors) $(LITERAL Identifier) $(LITERAL '=') $(RULE expression) * | $(RULE type) $(LITERAL Identifier) $(LITERAL '=') $(RULE expression) * | $(RULE expression) * ;) */ IfStatement parseIfStatement() { mixin(traceEnterAndExit!(__FUNCTION__)); auto node = allocator.make!IfStatement; node.line = current().line; node.column = current().column; mixin(tokenCheck!"if"); if (moreTokens) node.startIndex = current().index; mixin(tokenCheck!"("); if (currentIs(tok!"auto")) { advance(); const i = expect(tok!"identifier"); if (i !is null) node.identifier = *i; expect(tok!"="); mixin(parseNodeQ!(`node.expression`, `Expression`)); } else { // consume for TypeCtors = identifier if (isTypeCtor(current.type)) { while (isTypeCtor(current.type)) { const prev = current.type; advance(); if (current.type == prev) warn("redundant type constructor"); } // goes back for TypeCtor(Type) = identifier if (currentIs(tok!"(")) index--; } immutable b = setBookmark(); immutable c = allocator.setCheckpoint(); auto type = parseType(); if (type is null || !currentIs(tok!"identifier") || !peekIs(tok!"=")) { allocator.rollback(c); goToBookmark(b); mixin(parseNodeQ!(`node.expression`, `Expression`)); } else { abandonBookmark(b); node.type = type; mixin(tokenCheck!(`node.identifier`, "identifier")); mixin(tokenCheck!"="); mixin(parseNodeQ!(`node.expression`, `Expression`)); } } mixin(tokenCheck!")"); if (currentIs(tok!"}")) { error("Statement expected", false); return node; // this line makes DCD better } mixin(parseNodeQ!(`node.thenStatement`, `DeclarationOrStatement`)); if (currentIs(tok!"else")) { advance(); mixin(parseNodeQ!(`node.elseStatement`, `DeclarationOrStatement`)); } return node; } /** * Parses an ImportBind * * $(GRAMMAR $(RULEDEF importBind): * $(LITERAL Identifier) ($(LITERAL '=') $(LITERAL Identifier))? * ;) */ ImportBind parseImportBind() { auto node = allocator.make!ImportBind; const ident = expect(tok!"identifier"); mixin(nullCheck!`ident`); node.left = *ident; if (currentIs(tok!"=")) { advance(); const id = expect(tok!"identifier"); mixin(nullCheck!`id`); node.right = *id; } return node; } /** * Parses ImportBindings * * $(GRAMMAR $(RULEDEF importBindings): * $(RULE _singleImport) $(LITERAL ':') $(RULE importBind) ($(LITERAL ',') $(RULE importBind))* * ;) */ ImportBindings parseImportBindings(SingleImport singleImport) { auto node = allocator.make!ImportBindings; mixin(nullCheck!`node.singleImport = singleImport is null ? parseSingleImport() : singleImport`); mixin(tokenCheck!":"); StackBuffer importBinds; while (moreTokens()) { immutable c = allocator.setCheckpoint(); if (importBinds.put(parseImportBind())) { if (currentIs(tok!",")) advance(); else break; } else { allocator.rollback(c); break; } } ownArray(node.importBinds, importBinds); return node; } /** * Parses an ImportDeclaration * * $(GRAMMAR $(RULEDEF importDeclaration): * $(LITERAL 'import') $(RULE singleImport) ($(LITERAL ',') $(RULE singleImport))* ($(LITERAL ',') $(RULE importBindings))? $(LITERAL ';') * | $(LITERAL 'import') $(RULE importBindings) $(LITERAL ';') * ;) */ ImportDeclaration parseImportDeclaration() { auto node = allocator.make!ImportDeclaration; node.startIndex = current().index; mixin(tokenCheck!"import"); SingleImport si = parseSingleImport(); if (si is null) return null; if (currentIs(tok!":")) node.importBindings = parseImportBindings(si); else { StackBuffer singleImports; singleImports.put(si); if (currentIs(tok!",")) { advance(); while (moreTokens()) { auto single = parseSingleImport(); mixin(nullCheck!`single`); if (currentIs(tok!":")) { node.importBindings = parseImportBindings(single); break; } else { singleImports.put(single); if (currentIs(tok!",")) advance(); else break; } } } ownArray(node.singleImports, singleImports); } node.endIndex = (moreTokens() ? current() : previous()).index + 1; mixin(tokenCheck!";"); return node; } /** * Parses an ImportExpression * * $(GRAMMAR $(RULEDEF importExpression): * $(LITERAL 'import') $(LITERAL '$(LPAREN)') $(RULE assignExpression) $(LITERAL '$(RPAREN)') * ;) */ ImportExpression parseImportExpression() { mixin(traceEnterAndExit!(__FUNCTION__)); mixin(simpleParse!(ImportExpression, tok!"import", tok!"(", "assignExpression|parseAssignExpression", tok!")")); } /** * Parses an Index * * $(GRAMMAR $(RULEDEF index): * $(RULE assignExpression) ($(LITERAL '..') $(RULE assignExpression))? * ; * ) */ Index parseIndex() { mixin(traceEnterAndExit!(__FUNCTION__)); auto node = allocator.make!Index(); mixin(parseNodeQ!(`node.low`, `AssignExpression`)); if (currentIs(tok!"..")) { advance(); mixin(parseNodeQ!(`node.high`, `AssignExpression`)); } return node; } /** * Parses an IndexExpression * * $(GRAMMAR $(RULEDEF indexExpression): * $(RULE _unaryExpression) $(LITERAL '[') $(LITERAL ']') * | $(RULE _unaryExpression) $(LITERAL '[') $(RULE index) ($(LITERAL ',') $(RULE index))* $(LITERAL ']') * ; * ) */ IndexExpression parseIndexExpression(UnaryExpression unaryExpression = null) { mixin(traceEnterAndExit!(__FUNCTION__)); auto node = allocator.make!IndexExpression; mixin(nullCheck!`node.unaryExpression = unaryExpression is null ? parseUnaryExpression() : unaryExpression`); mixin(tokenCheck!"["); StackBuffer indexes; while (true) { if (!moreTokens()) { error("Expected unary expression instead of EOF"); return null; } if (currentIs(tok!"]")) break; if (!(indexes.put(parseIndex()))) return null; if (currentIs(tok!",")) advance(); else break; } ownArray(node.indexes, indexes); advance(); // ] return node; } /** * Parses an InExpression * * $(GRAMMAR $(RULEDEF inExpression): * $(RULE shiftExpression) ($(LITERAL 'in') | ($(LITERAL '!') $(LITERAL 'in'))) $(RULE shiftExpression) * ;) */ ExpressionNode parseInExpression(ExpressionNode shift = null) { auto node = allocator.make!InExpression; mixin(nullCheck!`node.left = shift is null ? parseShiftExpression() : shift`); if (currentIs(tok!"!")) { node.negated = true; advance(); } mixin(tokenCheck!"in"); mixin(parseNodeQ!(`node.right`, `ShiftExpression`)); return node; } /** * Parses an InStatement * * $(GRAMMAR $(RULEDEF inStatement): * $(LITERAL 'in') $(RULE blockStatement) * ;) */ InStatement parseInStatement() { auto node = allocator.make!InStatement; const i = expect(tok!"in"); mixin(nullCheck!`i`); node.inTokenLocation = i.index; mixin(parseNodeQ!(`node.blockStatement`, `BlockStatement`)); return node; } /** * Parses an Initializer * * $(GRAMMAR $(RULEDEF initializer): * $(LITERAL 'void') * | $(RULE nonVoidInitializer) * ;) */ Initializer parseInitializer() { auto node = allocator.make!Initializer; if (currentIs(tok!"void") && peekIsOneOf(tok!",", tok!";")) advance(); else mixin(parseNodeQ!(`node.nonVoidInitializer`, `NonVoidInitializer`)); return node; } /** * Parses an InterfaceDeclaration * * $(GRAMMAR $(RULEDEF interfaceDeclaration): * $(LITERAL 'interface') $(LITERAL Identifier) $(LITERAL ';') * | $(LITERAL 'interface') $(LITERAL Identifier) ($(LITERAL ':') $(RULE baseClassList))? $(RULE structBody) * | $(LITERAL 'interface') $(LITERAL Identifier) $(RULE templateParameters) $(RULE constraint)? ($(LITERAL ':') $(RULE baseClassList))? $(RULE structBody) * | $(LITERAL 'interface') $(LITERAL Identifier) $(RULE templateParameters) ($(LITERAL ':') $(RULE baseClassList))? $(RULE constraint)? $(RULE structBody) * ;) */ InterfaceDeclaration parseInterfaceDeclaration() { auto node = allocator.make!InterfaceDeclaration; expect(tok!"interface"); return parseInterfaceOrClass(node); } /** * Parses an Invariant * * $(GRAMMAR $(RULEDEF invariant): * $(LITERAL 'invariant') ($(LITERAL '$(LPAREN)') $(LITERAL '$(RPAREN)'))? $(RULE blockStatement) * ;) */ Invariant parseInvariant() { auto node = allocator.make!Invariant; node.index = current.index; node.line = current.line; mixin(tokenCheck!"invariant"); if (currentIs(tok!"(")) { advance(); mixin(tokenCheck!")"); } mixin(parseNodeQ!(`node.blockStatement`, `BlockStatement`)); return node; } /** * Parses an IsExpression * * $(GRAMMAR $(RULEDEF isExpression): * $(LITERAL'is') $(LITERAL '$(LPAREN)') $(RULE type) $(LITERAL identifier)? $(LITERAL '$(RPAREN)') * | $(LITERAL'is') $(LITERAL '$(LPAREN)') $(RULE type) $(LITERAL identifier)? $(LITERAL ':') $(RULE typeSpecialization) $(LITERAL '$(RPAREN)') * | $(LITERAL'is') $(LITERAL '$(LPAREN)') $(RULE type) $(LITERAL identifier)? $(LITERAL '=') $(RULE typeSpecialization) $(LITERAL '$(RPAREN)') * | $(LITERAL'is') $(LITERAL '$(LPAREN)') $(RULE type) $(LITERAL identifier)? $(LITERAL ':') $(RULE typeSpecialization) $(LITERAL ',') $(RULE templateParameterList) $(LITERAL '$(RPAREN)') * | $(LITERAL'is') $(LITERAL '$(LPAREN)') $(RULE type) $(LITERAL identifier)? $(LITERAL '=') $(RULE typeSpecialization) $(LITERAL ',') $(RULE templateParameterList) $(LITERAL '$(RPAREN)') * ;) */ IsExpression parseIsExpression() { mixin(traceEnterAndExit!(__FUNCTION__)); auto node = allocator.make!IsExpression; mixin(tokenCheck!"is"); mixin(tokenCheck!"("); mixin(parseNodeQ!(`node.type`, `Type`)); if (currentIs(tok!"identifier")) node.identifier = advance(); if (currentIsOneOf(tok!"==", tok!":")) { node.equalsOrColon = advance().type; mixin(parseNodeQ!(`node.typeSpecialization`, `TypeSpecialization`)); if (currentIs(tok!",")) { advance(); mixin(parseNodeQ!(`node.templateParameterList`, `TemplateParameterList`)); } } mixin(tokenCheck!")"); return node; } /** * Parses a KeyValuePair * * $(GRAMMAR $(RULEDEF keyValuePair): * $(RULE assignExpression) $(LITERAL ':') $(RULE assignExpression) * ;) */ KeyValuePair parseKeyValuePair() { mixin(traceEnterAndExit!(__FUNCTION__)); auto node = allocator.make!KeyValuePair; mixin(parseNodeQ!(`node.key`, `AssignExpression`)); mixin(tokenCheck!":"); mixin(parseNodeQ!(`node.value`, `AssignExpression`)); return node; } /** * Parses KeyValuePairs * * $(GRAMMAR $(RULEDEF keyValuePairs): * $(RULE keyValuePair) ($(LITERAL ',') $(RULE keyValuePair))* $(LITERAL ',')? * ;) */ KeyValuePairs parseKeyValuePairs() { mixin(traceEnterAndExit!(__FUNCTION__)); auto node = allocator.make!KeyValuePairs; StackBuffer keyValuePairs; while (moreTokens()) { if (!keyValuePairs.put(parseKeyValuePair())) return null; if (currentIs(tok!",")) { advance(); if (currentIs(tok!"]")) break; } else break; } ownArray(node.keyValuePairs, keyValuePairs); return node; } /** * Parses a LabeledStatement * * $(GRAMMAR $(RULEDEF labeledStatement): * $(LITERAL Identifier) $(LITERAL ':') $(RULE declarationOrStatement)? * ;) */ LabeledStatement parseLabeledStatement() { mixin(traceEnterAndExit!(__FUNCTION__)); auto node = allocator.make!LabeledStatement; const ident = expect(tok!"identifier"); mixin (nullCheck!`ident`); node.identifier = *ident; expect(tok!":"); if (!currentIs(tok!"}")) mixin(parseNodeQ!(`node.declarationOrStatement`, `DeclarationOrStatement`)); return node; } /** * Parses a LastCatch * * $(GRAMMAR $(RULEDEF lastCatch): * $(LITERAL 'catch') $(RULE statementNoCaseNoDefault) * ;) */ LastCatch parseLastCatch() { mixin(traceEnterAndExit!(__FUNCTION__)); auto node = allocator.make!LastCatch; const t = expect(tok!"catch"); mixin (nullCheck!`t`); node.line = t.line; node.column = t.column; mixin(parseNodeQ!(`node.statementNoCaseNoDefault`, `StatementNoCaseNoDefault`)); return node; } /** * Parses a LinkageAttribute * * $(GRAMMAR $(RULEDEF linkageAttribute): * $(LITERAL 'extern') $(LITERAL '$(LPAREN)') $(LITERAL Identifier) $(LITERAL '$(RPAREN)') * | $(LITERAL 'extern') $(LITERAL '$(LPAREN)') $(LITERAL Identifier) $(LITERAL '-') $(LITERAL Identifier) $(LITERAL '$(RPAREN)') * | $(LITERAL 'extern') $(LITERAL '$(LPAREN)') $(LITERAL Identifier) $(LITERAL '++') ($(LITERAL ',') $(RULE typeIdentifierPart) | $(LITERAL 'struct') | $(LITERAL 'class'))? $(LITERAL '$(RPAREN)') * ;) */ LinkageAttribute parseLinkageAttribute() { mixin(traceEnterAndExit!(__FUNCTION__)); auto node = allocator.make!LinkageAttribute; mixin (tokenCheck!"extern"); mixin (tokenCheck!"("); const ident = expect(tok!"identifier"); mixin (nullCheck!`ident`); node.identifier = *ident; if (currentIs(tok!"++")) { advance(); node.hasPlusPlus = true; if (currentIs(tok!",")) { advance(); if (currentIsOneOf(tok!"struct", tok!"class")) node.classOrStruct = advance().type; else mixin(parseNodeQ!(`node.typeIdentifierPart`, `TypeIdentifierPart`)); } } else if (currentIs(tok!"-")) { advance(); mixin(tokenCheck!"identifier"); } expect(tok!")"); return node; } /** * Parses a MemberFunctionAttribute * * $(GRAMMAR $(RULEDEF memberFunctionAttribute): * $(RULE functionAttribute) * | $(LITERAL 'immutable') * | $(LITERAL 'inout') * | $(LITERAL 'shared') * | $(LITERAL 'const') * | $(LITERAL 'return') * | $(LITERAL 'scope') * ;) */ MemberFunctionAttribute parseMemberFunctionAttribute() { mixin(traceEnterAndExit!(__FUNCTION__)); auto node = allocator.make!MemberFunctionAttribute; switch (current.type) { case tok!"@": mixin(parseNodeQ!(`node.atAttribute`, `AtAttribute`)); break; case tok!"immutable": case tok!"inout": case tok!"shared": case tok!"const": case tok!"pure": case tok!"nothrow": case tok!"return": case tok!"scope": node.tokenType = advance().type; break; default: error(`Member funtion attribute expected`); } return node; } /** * Parses a MixinDeclaration * * $(GRAMMAR $(RULEDEF mixinDeclaration): * $(RULE mixinExpression) $(LITERAL ';') * | $(RULE templateMixinExpression) $(LITERAL ';') * ;) */ MixinDeclaration parseMixinDeclaration() { mixin(traceEnterAndExit!(__FUNCTION__)); auto node = allocator.make!MixinDeclaration; if (peekIsOneOf(tok!"identifier", tok!"typeof", tok!".")) mixin(parseNodeQ!(`node.templateMixinExpression`, `TemplateMixinExpression`)); else if (peekIs(tok!"(")) mixin(parseNodeQ!(`node.mixinExpression`, `MixinExpression`)); else { error("`(` or identifier expected"); return null; } expect(tok!";"); return node; } /** * Parses a MixinExpression * * $(GRAMMAR $(RULEDEF mixinExpression): * $(LITERAL 'mixin') $(LITERAL '$(LPAREN)') $(RULE assignExpression) $(LITERAL '$(RPAREN)') * ;) */ MixinExpression parseMixinExpression() { mixin(traceEnterAndExit!(__FUNCTION__)); auto node = allocator.make!MixinExpression; expect(tok!"mixin"); expect(tok!"("); mixin(parseNodeQ!(`node.assignExpression`, `AssignExpression`)); expect(tok!")"); return node; } /** * Parses a MixinTemplateDeclaration * * $(GRAMMAR $(RULEDEF mixinTemplateDeclaration): * $(LITERAL 'mixin') $(RULE templateDeclaration) * ;) */ MixinTemplateDeclaration parseMixinTemplateDeclaration() { mixin(traceEnterAndExit!(__FUNCTION__)); auto node = allocator.make!MixinTemplateDeclaration; mixin(tokenCheck!"mixin"); mixin(parseNodeQ!(`node.templateDeclaration`, `TemplateDeclaration`)); return node; } /** * Parses a MixinTemplateName * * $(GRAMMAR $(RULEDEF mixinTemplateName): * $(RULE symbol) * | $(RULE typeofExpression) $(LITERAL '.') $(RULE identifierOrTemplateChain) * ;) */ MixinTemplateName parseMixinTemplateName() { mixin(traceEnterAndExit!(__FUNCTION__)); auto node = allocator.make!MixinTemplateName; if (currentIs(tok!"typeof")) { mixin(parseNodeQ!(`node.typeofExpression`, `TypeofExpression`)); expect(tok!"."); mixin(parseNodeQ!(`node.identifierOrTemplateChain`, `IdentifierOrTemplateChain`)); } else mixin(parseNodeQ!(`node.symbol`, `Symbol`)); return node; } /** * Parses a Module * * $(GRAMMAR $(RULEDEF module): * $(RULE moduleDeclaration)? $(RULE declaration)* * ;) */ Module parseModule() out (retVal) { assert(retVal !is null); } body { mixin(traceEnterAndExit!(__FUNCTION__)); Module m = allocator.make!Module; if (currentIs(tok!"scriptLine")) m.scriptLine = advance(); bool isDeprecatedModule; if (currentIs(tok!"deprecated")) { immutable b = setBookmark(); advance(); if (currentIs(tok!"(")) skipParens(); isDeprecatedModule = currentIs(tok!"module"); goToBookmark(b); } if (currentIs(tok!"module") || isDeprecatedModule) { immutable c = allocator.setCheckpoint(); m.moduleDeclaration = parseModuleDeclaration(); if (m.moduleDeclaration is null) allocator.rollback(c); } StackBuffer declarations; while (moreTokens()) { immutable c = allocator.setCheckpoint(); if (!declarations.put(parseDeclaration(true, true))) allocator.rollback(c); } ownArray(m.declarations, declarations); return m; } /** * Parses a ModuleDeclaration * * $(GRAMMAR $(RULEDEF moduleDeclaration): * $(RULE deprecated)? $(LITERAL 'module') $(RULE identifierChain) $(LITERAL ';') * ;) */ ModuleDeclaration parseModuleDeclaration() { auto node = allocator.make!ModuleDeclaration; if (currentIs(tok!"deprecated")) mixin(parseNodeQ!(`node.deprecated_`, `Deprecated`)); const start = expect(tok!"module"); mixin(nullCheck!`start`); mixin(parseNodeQ!(`node.moduleName`, `IdentifierChain`)); node.comment = start.comment; if (node.comment is null) node.comment = start.trailingComment; comment = null; const end = expect(tok!";"); node.startLocation = start.index; if (end !is null) node.endLocation = end.index; return node; } /** * Parses a MulExpression. * * $(GRAMMAR $(RULEDEF mulExpression): * $(RULE powExpression) * | $(RULE mulExpression) ($(LITERAL '*') | $(LITERAL '/') | $(LITERAL '%')) $(RULE powExpression) * ;) */ ExpressionNode parseMulExpression() { mixin(traceEnterAndExit!(__FUNCTION__)); return parseLeftAssocBinaryExpression!(MulExpression, PowExpression, tok!"*", tok!"/", tok!"%")(); } /** * Parses a NewAnonClassExpression * * $(GRAMMAR $(RULEDEF newAnonClassExpression): * $(LITERAL 'new') $(RULE arguments)? $(LITERAL 'class') $(RULE arguments)? $(RULE baseClassList)? $(RULE structBody) * ;) */ NewAnonClassExpression parseNewAnonClassExpression() { mixin(traceEnterAndExit!(__FUNCTION__)); auto node = allocator.make!NewAnonClassExpression; expect(tok!"new"); if (currentIs(tok!"(")) mixin(parseNodeQ!(`node.allocatorArguments`, `Arguments`)); expect(tok!"class"); if (currentIs(tok!"(")) mixin(parseNodeQ!(`node.constructorArguments`, `Arguments`)); if (!currentIs(tok!"{")) mixin(parseNodeQ!(`node.baseClassList`, `BaseClassList`)); mixin(parseNodeQ!(`node.structBody`, `StructBody`)); return node; } /** * Parses a NewExpression * * $(GRAMMAR $(RULEDEF newExpression): * $(LITERAL 'new') $(RULE type) (($(LITERAL '[') $(RULE assignExpression) $(LITERAL ']')) | $(RULE arguments))? * | $(RULE newAnonClassExpression) * ;) */ NewExpression parseNewExpression() { // Parse ambiguity. // auto a = new int[10]; // ^^^^^^^ // auto a = new int[10]; // ^^^**** mixin(traceEnterAndExit!(__FUNCTION__)); auto node = allocator.make!NewExpression; if (peekIsOneOf(tok!"class", tok!"(")) mixin(parseNodeQ!(`node.newAnonClassExpression`, `NewAnonClassExpression`)); else { expect(tok!"new"); mixin(parseNodeQ!(`node.type`, `Type`)); if (currentIs(tok!"[")) { advance(); mixin(parseNodeQ!(`node.assignExpression`, `AssignExpression`)); expect(tok!"]"); } else if (currentIs(tok!"(")) mixin(parseNodeQ!(`node.arguments`, `Arguments`)); } return node; } /** * Parses a NonVoidInitializer * * $(GRAMMAR $(RULEDEF nonVoidInitializer): * $(RULE assignExpression) * | $(RULE arrayInitializer) * | $(RULE structInitializer) * ;) */ NonVoidInitializer parseNonVoidInitializer() { mixin(traceEnterAndExit!(__FUNCTION__)); auto node = allocator.make!NonVoidInitializer; if (currentIs(tok!"{")) { const b = peekPastBraces(); if (b !is null && (b.type == tok!"(")) { mixin(parseNodeQ!(`node.assignExpression`, `AssignExpression`)); } else { const g = setBookmark(); advance(); ExpressionNode e; // issue 170: try to find a valid ExpressionStatement / EmptyStatement if (current.type != tok!";" && current.type != tok!"}") { e = parseAssignExpression(); } if ((current.type == tok!";" && e) || (!e && current.type == tok!";")) { goToBookmark(g); mixin(parseNodeQ!(`node.assignExpression`, `AssignExpression`)); } // No ExpressionStatement in the braces : StructInit else { goToBookmark(g); assert (currentIs(tok!"{")); const m = setBookmark(); auto initializer = parseStructInitializer(); if (initializer !is null) { node.structInitializer = initializer; abandonBookmark(m); } else { goToBookmark(m); mixin(parseNodeQ!(`node.assignExpression`, `AssignExpression`)); } } } } else if (currentIs(tok!"[")) { // issue 156: // the expression that gives an array element is usually a primary // so look if there are two open brackets + colon when they are closed bool isAA; const bk = setBookmark(); advance(); if (currentIs(tok!"[")) { advance(); const c = peekPastBrackets(); isAA = c !is null && c.type == tok!":"; } goToBookmark(bk); const b = peekPastBrackets(); if (!isAA && b !is null && (b.type == tok!"," || b.type == tok!")" || b.type == tok!"]" || b.type == tok!"}" || b.type == tok!";")) { mixin(parseNodeQ!(`node.arrayInitializer`, `ArrayInitializer`)); } else mixin(parseNodeQ!(`node.assignExpression`, `AssignExpression`)); } else mixin(parseNodeQ!(`node.assignExpression`, `AssignExpression`)); if (node.assignExpression is null && node.arrayInitializer is null && node.structInitializer is null) return null; return node; } /** * Parses Operands * * $(GRAMMAR $(RULEDEF operands): * $(RULE asmExp) * | $(RULE asmExp) $(LITERAL ',') $(RULE operands) * ;) */ Operands parseOperands() { mixin(traceEnterAndExit!(__FUNCTION__)); Operands node = allocator.make!Operands; StackBuffer expressions; while (true) { if (!expressions.put(parseAsmExp())) return null; if (currentIs(tok!",")) advance(); else break; } ownArray(node.operands, expressions); return node; } /** * Parses an OrExpression * * $(GRAMMAR $(RULEDEF orExpression): * $(RULE xorExpression) * | $(RULE orExpression) $(LITERAL '|') $(RULE xorExpression) * ;) */ ExpressionNode parseOrExpression() { mixin(traceEnterAndExit!(__FUNCTION__)); return parseLeftAssocBinaryExpression!(OrExpression, XorExpression, tok!"|")(); } /** * Parses an OrOrExpression * * $(GRAMMAR $(RULEDEF orOrExpression): * $(RULE andAndExpression) * | $(RULE orOrExpression) $(LITERAL '||') $(RULE andAndExpression) * ;) */ ExpressionNode parseOrOrExpression() { mixin(traceEnterAndExit!(__FUNCTION__)); return parseLeftAssocBinaryExpression!(OrOrExpression, AndAndExpression, tok!"||")(); } /** * Parses an OutStatement * * $(GRAMMAR $(RULEDEF outStatement): * $(LITERAL 'out') ($(LITERAL '$(LPAREN)') $(LITERAL Identifier) $(LITERAL '$(RPAREN)'))? $(RULE blockStatement) * ;) */ OutStatement parseOutStatement() { auto node = allocator.make!OutStatement; const o = expect(tok!"out"); mixin(nullCheck!`o`); node.outTokenLocation = o.index; if (currentIs(tok!"(")) { advance(); const ident = expect(tok!"identifier"); mixin (nullCheck!`ident`); node.parameter = *ident; expect(tok!")"); } mixin(parseNodeQ!(`node.blockStatement`, `BlockStatement`)); return node; } /** * Parses a Parameter * * $(GRAMMAR $(RULEDEF parameter): * $(RULE parameterAttribute)* $(RULE type) * | $(RULE parameterAttribute)* $(RULE type) $(LITERAL Identifier)? $(LITERAL '...') * | $(RULE parameterAttribute)* $(RULE type) $(LITERAL Identifier)? ($(LITERAL '=') $(RULE assignExpression))? * ;) */ Parameter parseParameter() { mixin(traceEnterAndExit!(__FUNCTION__)); auto node = allocator.make!Parameter; StackBuffer parameterAttributes; while (moreTokens()) { IdType type = parseParameterAttribute(false); if (type == tok!"") break; else parameterAttributes.put(type); } ownArray(node.parameterAttributes, parameterAttributes); mixin(parseNodeQ!(`node.type`, `Type`)); if (currentIs(tok!"identifier")) { node.name = advance(); if (currentIs(tok!"...")) { advance(); node.vararg = true; } else if (currentIs(tok!"=")) { advance(); mixin(parseNodeQ!(`node.default_`, `AssignExpression`)); if (currentIs(tok!"...")) { advance(); node.vararg = true; } } else if (currentIs(tok!"[")) { StackBuffer typeSuffixes; while(moreTokens() && currentIs(tok!"[")) if (!typeSuffixes.put(parseTypeSuffix())) return null; ownArray(node.cstyle, typeSuffixes); } } else if (currentIs(tok!"...")) { node.vararg = true; advance(); } else if (currentIs(tok!"=")) { advance(); mixin(parseNodeQ!(`node.default_`, `AssignExpression`)); } return node; } /** * Parses a ParameterAttribute * * $(GRAMMAR $(RULEDEF parameterAttribute): * $(RULE typeConstructor) * | $(LITERAL 'final') * | $(LITERAL 'in') * | $(LITERAL 'lazy') * | $(LITERAL 'out') * | $(LITERAL 'ref') * | $(LITERAL 'scope') * | $(LITERAL 'auto') * | $(LITERAL 'return') * ;) */ IdType parseParameterAttribute(bool validate = false) { mixin(traceEnterAndExit!(__FUNCTION__)); switch (current.type) { case tok!"immutable": case tok!"shared": case tok!"const": case tok!"inout": if (peekIs(tok!"(")) return tok!""; else goto case; case tok!"final": case tok!"in": case tok!"lazy": case tok!"out": case tok!"ref": case tok!"scope": case tok!"auto": case tok!"return": return advance().type; default: if (validate) error("Parameter attribute expected"); return tok!""; } } /** * Parses Parameters * * $(GRAMMAR $(RULEDEF parameters): * $(LITERAL '$(LPAREN)') $(RULE parameter) ($(LITERAL ',') $(RULE parameter))* ($(LITERAL ',') $(LITERAL '...'))? $(LITERAL '$(RPAREN)') * | $(LITERAL '$(LPAREN)') $(LITERAL '...') $(LITERAL '$(RPAREN)') * | $(LITERAL '$(LPAREN)') $(LITERAL '$(RPAREN)') * ;) */ Parameters parseParameters() { mixin(traceEnterAndExit!(__FUNCTION__)); auto node = allocator.make!Parameters; mixin(tokenCheck!"("); if (currentIs(tok!")")) { advance(); // ) return node; } if (currentIs(tok!"...")) { advance(); node.hasVarargs = true; mixin(tokenCheck!")"); return node; } StackBuffer parameters; while (moreTokens()) { if (currentIs(tok!"...")) { advance(); node.hasVarargs = true; break; } if (currentIs(tok!")")) break; if (!parameters.put(parseParameter())) return null; if (currentIs(tok!",")) advance(); else break; } ownArray(node.parameters, parameters); mixin(tokenCheck!")"); return node; } /** * Parses a Postblit * * $(GRAMMAR $(RULEDEF postblit): * $(LITERAL 'this') $(LITERAL '$(LPAREN)') $(LITERAL 'this') $(LITERAL '$(RPAREN)') $(RULE memberFunctionAttribute)* ($(RULE functionBody) | $(LITERAL ';')) * ;) */ Postblit parsePostblit() { mixin(traceEnterAndExit!(__FUNCTION__)); auto node = allocator.make!Postblit; node.line = current.line; node.column = current.column; node.location = current.index; index += 4; StackBuffer memberFunctionAttributes; while (currentIsMemberFunctionAttribute()) if (!memberFunctionAttributes.put(parseMemberFunctionAttribute())) return null; ownArray(node.memberFunctionAttributes, memberFunctionAttributes); if (currentIs(tok!";")) advance(); else mixin(parseNodeQ!(`node.functionBody`, `FunctionBody`)); return node; } /** * Parses a PowExpression * * $(GRAMMAR $(RULEDEF powExpression): * $(RULE unaryExpression) * | $(RULE powExpression) $(LITERAL '^^') $(RULE unaryExpression) * ;) */ ExpressionNode parsePowExpression() { mixin (traceEnterAndExit!(__FUNCTION__)); return parseLeftAssocBinaryExpression!(PowExpression, UnaryExpression, tok!"^^")(); } /** * Parses a PragmaDeclaration * * $(GRAMMAR $(RULEDEF pragmaDeclaration): * $(RULE pragmaExpression) $(LITERAL ';') * ;) */ PragmaDeclaration parsePragmaDeclaration() { mixin(traceEnterAndExit!(__FUNCTION__)); mixin(simpleParse!(PragmaDeclaration, "pragmaExpression|parsePragmaExpression", tok!";")); } /** * Parses a PragmaExpression * * $(GRAMMAR $(RULEDEF pragmaExpression): * $(RULE 'pragma') $(LITERAL '$(LPAREN)') $(LITERAL Identifier) ($(LITERAL ',') $(RULE argumentList))? $(LITERAL '$(RPAREN)') * ;) */ PragmaExpression parsePragmaExpression() { mixin (traceEnterAndExit!(__FUNCTION__)); auto node = allocator.make!PragmaExpression; expect(tok!"pragma"); expect(tok!"("); const ident = expect(tok!"identifier"); mixin(nullCheck!`ident`); node.identifier = *ident; if (currentIs(tok!",")) { advance(); mixin(parseNodeQ!(`node.argumentList`, `ArgumentList`)); } expect(tok!")"); return node; } /** * Parses a PragmaStatement * * $(GRAMMAR $(RULEDEF pragmaStatement): * $(RULE pragmaExpression) $(RULE statement) * | $(RULE pragmaExpression) $(RULE blockStatement) * | $(RULE pragmaExpression) $(LITERAL ';') * ;) */ PragmaStatement parsePragmaStatement() { mixin (traceEnterAndExit!(__FUNCTION__)); auto node = allocator.make!PragmaStatement; mixin(parseNodeQ!(`node.pragmaExpression`, `PragmaExpression`)); if (current == tok!"{") { mixin(parseNodeQ!(`node.blockStatement`, `BlockStatement`)); } else if (current == tok!";") { advance(); } else { mixin(parseNodeQ!(`node.statement`, `Statement`)); } return node; } /** * Parses a PrimaryExpression * * $(GRAMMAR $(RULEDEF primaryExpression): * $(RULE identifierOrTemplateInstance) * | $(LITERAL '.') $(RULE identifierOrTemplateInstance) * | $(RULE typeConstructor) $(LITERAL '$(LPAREN)') $(RULE basicType) $(LITERAL '$(RPAREN)') $(LITERAL '.') $(LITERAL Identifier) * | $(RULE basicType) $(LITERAL '.') $(LITERAL Identifier) * | $(RULE basicType) $(RULE arguments) * | $(RULE typeofExpression) * | $(RULE typeidExpression) * | $(RULE vector) * | $(RULE arrayLiteral) * | $(RULE assocArrayLiteral) * | $(LITERAL '$(LPAREN)') $(RULE expression) $(LITERAL '$(RPAREN)') * | $(RULE isExpression) * | $(RULE functionLiteralExpression) * | $(RULE traitsExpression) * | $(RULE mixinExpression) * | $(RULE importExpression) * | $(LITERAL '$') * | $(LITERAL 'this') * | $(LITERAL 'super') * | $(LITERAL '_null') * | $(LITERAL '_true') * | $(LITERAL '_false') * | $(LITERAL '___DATE__') * | $(LITERAL '___FILE__') * | $(LITERAL '___FILE_FULL_PATH__') * | $(LITERAL '___FUNCTION__') * | $(LITERAL '___LINE__') * | $(LITERAL '___MODULE__') * | $(LITERAL '___PRETTY_FUNCTION__') * | $(LITERAL '___TIME__') * | $(LITERAL '___TIMESTAMP__') * | $(LITERAL '___VENDOR__') * | $(LITERAL '___VERSION__') * | $(LITERAL IntegerLiteral) * | $(LITERAL FloatLiteral) * | $(LITERAL StringLiteral)+ * | $(LITERAL CharacterLiteral) * ;) */ PrimaryExpression parsePrimaryExpression() { mixin(traceEnterAndExit!(__FUNCTION__)); auto node = allocator.make!PrimaryExpression; if (!moreTokens()) { error("Expected primary statement instead of EOF"); return null; } switch (current.type) { case tok!".": node.dot = advance(); goto case; case tok!"identifier": if (current.text == "body") goto case tok!"do"; if (peekIs(tok!"=>")) mixin(parseNodeQ!(`node.functionLiteralExpression`, `FunctionLiteralExpression`)); else mixin(parseNodeQ!(`node.identifierOrTemplateInstance`, `IdentifierOrTemplateInstance`)); break; case tok!"immutable": case tok!"const": case tok!"inout": case tok!"shared": { advance(); expect(tok!"("); mixin(parseNodeQ!(`node.type`, `Type`)); expect(tok!")"); expect(tok!"."); const ident = expect(tok!"identifier"); if (ident !is null) node.primary = *ident; break; } foreach (B; BasicTypes) { case B: } node.basicType = advance(); if (currentIs(tok!".")) { advance(); const t = expect(tok!"identifier"); if (t !is null) node.primary = *t; } else if (currentIs(tok!"(")) mixin(parseNodeQ!(`node.arguments`, `Arguments`)); break; case tok!"function": case tok!"delegate": case tok!"{": case tok!"in": case tok!"out": case tok!"do": mixin(parseNodeQ!(`node.functionLiteralExpression`, `FunctionLiteralExpression`)); break; case tok!"typeof": mixin(parseNodeQ!(`node.typeofExpression`, `TypeofExpression`)); break; case tok!"typeid": mixin(parseNodeQ!(`node.typeidExpression`, `TypeidExpression`)); break; case tok!"__vector": mixin(parseNodeQ!(`node.vector`, `Vector`)); break; case tok!"[": if (isAssociativeArrayLiteral()) mixin(parseNodeQ!(`node.assocArrayLiteral`, `AssocArrayLiteral`)); else mixin(parseNodeQ!(`node.arrayLiteral`, `ArrayLiteral`)); break; case tok!"(": immutable b = setBookmark(); skipParens(); while (isAttribute()) parseAttribute(); if (currentIsOneOf(tok!"=>", tok!"{")) { goToBookmark(b); mixin(parseNodeQ!(`node.functionLiteralExpression`, `FunctionLiteralExpression`)); } else { goToBookmark(b); advance(); mixin(parseNodeQ!(`node.expression`, `Expression`)); mixin(tokenCheck!")"); } break; case tok!"is": mixin(parseNodeQ!(`node.isExpression`, `IsExpression`)); break; case tok!"__traits": mixin(parseNodeQ!(`node.traitsExpression`, `TraitsExpression`)); break; case tok!"mixin": mixin(parseNodeQ!(`node.mixinExpression`, `MixinExpression`)); break; case tok!"import": mixin(parseNodeQ!(`node.importExpression`, `ImportExpression`)); break; case tok!"this": case tok!"super": foreach (L; Literals) { case L: } if (currentIsOneOf(tok!"stringLiteral", tok!"wstringLiteral", tok!"dstringLiteral")) { node.primary = advance(); bool alreadyWarned = false; while (currentIsOneOf(tok!"stringLiteral", tok!"wstringLiteral", tok!"dstringLiteral")) { if (!alreadyWarned) { warn("Implicit concatenation of string literals"); alreadyWarned = true; } node.primary.text ~= advance().text; } } else node.primary = advance(); break; default: error("Primary expression expected"); return null; } return node; } /** * Parses a Register * * $(GRAMMAR $(RULEDEF register): * $(LITERAL Identifier) * | $(LITERAL Identifier) $(LITERAL '$(LPAREN)') $(LITERAL IntegerLiteral) $(LITERAL '$(RPAREN)') * ;) */ Register parseRegister() { mixin(traceEnterAndExit!(__FUNCTION__)); auto node = allocator.make!Register; const ident = expect(tok!"identifier"); mixin(nullCheck!`ident`); node.identifier = *ident; if (currentIs(tok!"(")) { advance(); const intLit = expect(tok!"intLiteral"); mixin(nullCheck!`intLit`); node.intLiteral = *intLit; expect(tok!")"); } return node; } /** * Parses a RelExpression * * $(GRAMMAR $(RULEDEF relExpression): * $(RULE shiftExpression) * | $(RULE relExpression) $(RULE relOperator) $(RULE shiftExpression) * ; *$(RULEDEF relOperator): * $(LITERAL '<') * | $(LITERAL '<=') * | $(LITERAL '>') * | $(LITERAL '>=') * | $(LITERAL '!<>=') * | $(LITERAL '!<>') * | $(LITERAL '<>') * | $(LITERAL '<>=') * | $(LITERAL '!>') * | $(LITERAL '!>=') * | $(LITERAL '!<') * | $(LITERAL '!<=') * ;) */ ExpressionNode parseRelExpression(ExpressionNode shift) { mixin (traceEnterAndExit!(__FUNCTION__)); return parseLeftAssocBinaryExpression!(RelExpression, ShiftExpression, tok!"<", tok!"<=", tok!">", tok!">=", tok!"!<>=", tok!"!<>", tok!"<>", tok!"<>=", tok!"!>", tok!"!>=", tok!"!>=", tok!"!<", tok!"!<=")(shift); } /** * Parses a ReturnStatement * * $(GRAMMAR $(RULEDEF returnStatement): * $(LITERAL 'return') $(RULE expression)? $(LITERAL ';') * ;) */ ReturnStatement parseReturnStatement() { mixin(traceEnterAndExit!(__FUNCTION__)); auto node = allocator.make!ReturnStatement; const start = expect(tok!"return"); mixin(nullCheck!`start`); node.startLocation = start.index; if (!currentIs(tok!";")) mixin(parseNodeQ!(`node.expression`, `Expression`)); const semicolon = expect(tok!";"); mixin(nullCheck!`semicolon`); node.endLocation = semicolon.index; return node; } /** * Parses a ScopeGuardStatement * * $(GRAMMAR $(RULEDEF scopeGuardStatement): * $(LITERAL 'scope') $(LITERAL '$(LPAREN)') $(LITERAL Identifier) $(LITERAL '$(RPAREN)') $(RULE statementNoCaseNoDefault) * ;) */ ScopeGuardStatement parseScopeGuardStatement() { mixin(traceEnterAndExit!(__FUNCTION__)); auto node = allocator.make!ScopeGuardStatement; expect(tok!"scope"); expect(tok!"("); const ident = expect(tok!"identifier"); mixin(nullCheck!`ident`); node.identifier = *ident; expect(tok!")"); mixin(parseNodeQ!(`node.statementNoCaseNoDefault`, `StatementNoCaseNoDefault`)); return node; } /** * Parses a SharedStaticConstructor * * $(GRAMMAR $(RULEDEF sharedStaticConstructor): * $(LITERAL 'shared') $(LITERAL 'static') $(LITERAL 'this') $(LITERAL '$(LPAREN)') $(LITERAL '$(RPAREN)') $(RULE memberFunctionAttribute)* ($(RULE functionBody) | $(LITERAL ";")) * ;) */ SharedStaticConstructor parseSharedStaticConstructor() { mixin(traceEnterAndExit!(__FUNCTION__)); auto node = allocator.make!SharedStaticConstructor; node.location = current().index; mixin(tokenCheck!"shared"); mixin(tokenCheck!"static"); return parseStaticCtorDtorCommon(node); } /** * Parses a SharedStaticDestructor * * $(GRAMMAR $(RULEDEF sharedStaticDestructor): * $(LITERAL 'shared') $(LITERAL 'static') $(LITERAL '~') $(LITERAL 'this') $(LITERAL '$(LPAREN)') $(LITERAL '$(RPAREN)') $(RULE memberFunctionAttribute)* ($(RULE functionBody) | $(LITERAL ";")) * ;) */ SharedStaticDestructor parseSharedStaticDestructor() { mixin(traceEnterAndExit!(__FUNCTION__)); auto node = allocator.make!SharedStaticDestructor; node.location = current().index; mixin(tokenCheck!"shared"); mixin(tokenCheck!"static"); mixin(tokenCheck!"~"); return parseStaticCtorDtorCommon(node); } /** * Parses a ShiftExpression * * $(GRAMMAR $(RULEDEF shiftExpression): * $(RULE addExpression) * | $(RULE shiftExpression) ($(LITERAL '<<') | $(LITERAL '>>') | $(LITERAL '>>>')) $(RULE addExpression) * ;) */ ExpressionNode parseShiftExpression() { mixin(traceEnterAndExit!(__FUNCTION__)); return parseLeftAssocBinaryExpression!(ShiftExpression, AddExpression, tok!"<<", tok!">>", tok!">>>")(); } /** * Parses a SingleImport * * $(GRAMMAR $(RULEDEF singleImport): * ($(LITERAL Identifier) $(LITERAL '='))? $(RULE identifierChain) * ;) */ SingleImport parseSingleImport() { mixin(traceEnterAndExit!(__FUNCTION__)); auto node = allocator.make!SingleImport; if (startsWith(tok!"identifier", tok!"=")) { node.rename = advance(); // identifier advance(); // = } mixin(parseNodeQ!(`node.identifierChain`, `IdentifierChain`)); if (node.identifierChain is null) return null; return node; } /** * Parses a Statement * * $(GRAMMAR $(RULEDEF statement): * $(RULE statementNoCaseNoDefault) * | $(RULE caseStatement) * | $(RULE caseRangeStatement) * | $(RULE defaultStatement) * ;) */ Statement parseStatement() { mixin(traceEnterAndExit!(__FUNCTION__)); auto node = allocator.make!Statement; if (!moreTokens()) { error("Expected statement instead of EOF"); return null; } switch (current.type) { case tok!"case": advance(); auto argumentList = parseArgumentList(); if (argumentList is null) return null; if (argumentList.items.length == 1 && startsWith(tok!":", tok!"..")) node.caseRangeStatement = parseCaseRangeStatement(argumentList.items[0]); else node.caseStatement = parseCaseStatement(argumentList); break; case tok!"default": mixin(parseNodeQ!(`node.defaultStatement`, `DefaultStatement`)); break; default: mixin(parseNodeQ!(`node.statementNoCaseNoDefault`, `StatementNoCaseNoDefault`)); break; } return node; } /** * Parses a StatementNoCaseNoDefault * * $(GRAMMAR $(RULEDEF statementNoCaseNoDefault): * $(RULE labeledStatement) * | $(RULE blockStatement) * | $(RULE ifStatement) * | $(RULE whileStatement) * | $(RULE doStatement) * | $(RULE forStatement) * | $(RULE foreachStatement) * | $(RULE switchStatement) * | $(RULE finalSwitchStatement) * | $(RULE continueStatement) * | $(RULE breakStatement) * | $(RULE returnStatement) * | $(RULE gotoStatement) * | $(RULE withStatement) * | $(RULE synchronizedStatement) * | $(RULE tryStatement) * | $(RULE throwStatement) * | $(RULE scopeGuardStatement) * | $(RULE pragmaStatement) * | $(RULE asmStatement) * | $(RULE conditionalStatement) * | $(RULE staticAssertStatement) * | $(RULE versionSpecification) * | $(RULE debugSpecification) * | $(RULE expressionStatement) * ;) */ StatementNoCaseNoDefault parseStatementNoCaseNoDefault() { mixin(traceEnterAndExit!(__FUNCTION__)); auto node = allocator.make!StatementNoCaseNoDefault; node.startLocation = current().index; switch (current.type) { case tok!"{": mixin(parseNodeQ!(`node.blockStatement`, `BlockStatement`)); break; case tok!"if": mixin(parseNodeQ!(`node.ifStatement`, `IfStatement`)); break; case tok!"while": mixin(parseNodeQ!(`node.whileStatement`, `WhileStatement`)); break; case tok!"do": mixin(parseNodeQ!(`node.doStatement`, `DoStatement`)); break; case tok!"for": mixin(parseNodeQ!(`node.forStatement`, `ForStatement`)); break; case tok!"foreach": case tok!"foreach_reverse": mixin(parseNodeQ!(`node.foreachStatement`, `ForeachStatement`)); break; case tok!"switch": mixin(parseNodeQ!(`node.switchStatement`, `SwitchStatement`)); break; case tok!"continue": mixin(parseNodeQ!(`node.continueStatement`, `ContinueStatement`)); break; case tok!"break": mixin(parseNodeQ!(`node.breakStatement`, `BreakStatement`)); break; case tok!"return": mixin(parseNodeQ!(`node.returnStatement`, `ReturnStatement`)); break; case tok!"goto": mixin(parseNodeQ!(`node.gotoStatement`, `GotoStatement`)); break; case tok!"with": mixin(parseNodeQ!(`node.withStatement`, `WithStatement`)); break; case tok!"synchronized": mixin(parseNodeQ!(`node.synchronizedStatement`, `SynchronizedStatement`)); break; case tok!"try": mixin(parseNodeQ!(`node.tryStatement`, `TryStatement`)); break; case tok!"throw": mixin(parseNodeQ!(`node.throwStatement`, `ThrowStatement`)); break; case tok!"scope": mixin(parseNodeQ!(`node.scopeGuardStatement`, `ScopeGuardStatement`)); break; case tok!"asm": mixin(parseNodeQ!(`node.asmStatement`, `AsmStatement`)); break; case tok!"pragma": mixin(parseNodeQ!(`node.pragmaStatement`, `PragmaStatement`)); break; case tok!"final": if (peekIs(tok!"switch")) { mixin(parseNodeQ!(`node.finalSwitchStatement`, `FinalSwitchStatement`)); break; } else { error("`switch` expected"); return null; } case tok!"debug": if (peekIs(tok!"=")) mixin(parseNodeQ!(`node.debugSpecification`, `DebugSpecification`)); else mixin(parseNodeQ!(`node.conditionalStatement`, `ConditionalStatement`)); break; case tok!"version": if (peekIs(tok!"=")) mixin(parseNodeQ!(`node.versionSpecification`, `VersionSpecification`)); else mixin(parseNodeQ!(`node.conditionalStatement`, `ConditionalStatement`)); break; case tok!"static": if (peekIs(tok!"if")) mixin(parseNodeQ!(`node.conditionalStatement`, `ConditionalStatement`)); else if (peekIs(tok!"assert")) mixin(parseNodeQ!(`node.staticAssertStatement`, `StaticAssertStatement`)); else if (peekIs(tok!"foreach") || peekIs(tok!"foreach_reverse")) mixin(parseNodeQ!(`node.staticForeachStatement`, `StaticForeachStatement`)); else { error("`if`, `assert`, `foreach` or `foreach_reverse` expected."); return null; } break; case tok!"identifier": if (peekIs(tok!":")) { mixin(parseNodeQ!(`node.labeledStatement`, `LabeledStatement`)); break; } goto default; case tok!"delete": case tok!"assert": default: mixin(parseNodeQ!(`node.expressionStatement`, `ExpressionStatement`)); break; } node.endLocation = tokens[index - 1].index; return node; } /** * Parses a StaticAssertDeclaration * * $(GRAMMAR $(RULEDEF staticAssertDeclaration): * $(RULE staticAssertStatement) * ;) */ StaticAssertDeclaration parseStaticAssertDeclaration() { mixin(traceEnterAndExit!(__FUNCTION__)); mixin(simpleParse!(StaticAssertDeclaration, "staticAssertStatement|parseStaticAssertStatement")); } /** * Parses a StaticAssertStatement * * $(GRAMMAR $(RULEDEF staticAssertStatement): * $(LITERAL 'static') $(RULE assertExpression) $(LITERAL ';') * ;) */ StaticAssertStatement parseStaticAssertStatement() { mixin(traceEnterAndExit!(__FUNCTION__)); mixin(simpleParse!(StaticAssertStatement, tok!"static", "assertExpression|parseAssertExpression", tok!";")); } /** * Parses a StaticConstructor * * $(GRAMMAR $(RULEDEF staticConstructor): * $(LITERAL 'static') $(LITERAL 'this') $(LITERAL '$(LPAREN)') $(LITERAL '$(RPAREN)') $(RULE memberFunctionAttribute)* ($(RULE functionBody) | $(LITERAL ";")) * ;) */ StaticConstructor parseStaticConstructor() { mixin(traceEnterAndExit!(__FUNCTION__)); auto node = allocator.make!StaticConstructor; node.location = current().index; mixin(tokenCheck!"static"); return parseStaticCtorDtorCommon(node); } /** * Parses a StaticDestructor * * $(GRAMMAR $(RULEDEF staticDestructor): * $(LITERAL 'static') $(LITERAL '~') $(LITERAL 'this') $(LITERAL '$(LPAREN)') $(LITERAL '$(RPAREN)') $(RULE memberFunctionAttribute)* ($(RULE functionBody) | $(LITERAL ";")) * ;) */ StaticDestructor parseStaticDestructor() { mixin(traceEnterAndExit!(__FUNCTION__)); auto node = allocator.make!StaticDestructor; node.location = current().index; mixin(tokenCheck!"static"); mixin(tokenCheck!"~"); return parseStaticCtorDtorCommon(node); } /** * Parses an StaticIfCondition * * $(GRAMMAR $(RULEDEF staticIfCondition): * $(LITERAL 'static') $(LITERAL 'if') $(LITERAL '$(LPAREN)') $(RULE assignExpression) $(LITERAL '$(RPAREN)') * ;) */ StaticIfCondition parseStaticIfCondition() { mixin(traceEnterAndExit!(__FUNCTION__)); mixin(simpleParse!(StaticIfCondition, tok!"static", tok!"if", tok!"(", "assignExpression|parseAssignExpression", tok!")")); } /** * Parses a StorageClass * * $(GRAMMAR $(RULEDEF storageClass): * $(RULE alignAttribute) * | $(RULE linkageAttribute) * | $(RULE atAttribute) * | $(RULE typeConstructor) * | $(RULE deprecated) * | $(LITERAL 'abstract') * | $(LITERAL 'auto') * | $(LITERAL 'enum') * | $(LITERAL 'extern') * | $(LITERAL 'final') * | $(LITERAL 'nothrow') * | $(LITERAL 'override') * | $(LITERAL 'pure') * | $(LITERAL 'ref') * | $(LITERAL '___gshared') * | $(LITERAL 'scope') * | $(LITERAL 'static') * | $(LITERAL 'synchronized') * ;) */ StorageClass parseStorageClass() { auto node = allocator.make!StorageClass; switch (current.type) { case tok!"@": mixin(parseNodeQ!(`node.atAttribute`, `AtAttribute`)); break; case tok!"deprecated": mixin(parseNodeQ!(`node.deprecated_`, `Deprecated`)); break; case tok!"align": mixin(parseNodeQ!(`node.alignAttribute`, `AlignAttribute`)); break; case tok!"extern": if (peekIs(tok!"(")) { mixin(parseNodeQ!(`node.linkageAttribute`, `LinkageAttribute`)); break; } else goto case; case tok!"const": case tok!"immutable": case tok!"inout": case tok!"shared": case tok!"abstract": case tok!"auto": case tok!"enum": case tok!"final": case tok!"nothrow": case tok!"override": case tok!"pure": case tok!"ref": case tok!"__gshared": case tok!"scope": case tok!"static": case tok!"synchronized": node.token = advance(); break; default: error(`Storage class expected`); return null; } return node; } /** * Parses a StructBody * * $(GRAMMAR $(RULEDEF structBody): * $(LITERAL '{') $(RULE declaration)* $(LITERAL '}') * ;) */ StructBody parseStructBody() { mixin(traceEnterAndExit!(__FUNCTION__)); auto node = allocator.make!StructBody; const start = expect(tok!"{"); if (start !is null) node.startLocation = start.index; StackBuffer declarations; while (!currentIs(tok!"}") && moreTokens()) { immutable c = allocator.setCheckpoint(); if (!declarations.put(parseDeclaration(true, true))) allocator.rollback(c); } ownArray(node.declarations, declarations); const end = expect(tok!"}"); if (end !is null) node.endLocation = end.index; return node; } /** * Parses a StructDeclaration * * $(GRAMMAR $(RULEDEF structDeclaration): * $(LITERAL 'struct') $(LITERAL Identifier) ($(RULE templateParameters) $(RULE constraint)?)? ($(RULE structBody) | $(LITERAL ';')) * | $(LITERAL 'struct') $(RULE structBody) * ;) */ StructDeclaration parseStructDeclaration() { mixin(traceEnterAndExit!(__FUNCTION__)); auto node = allocator.make!StructDeclaration; const t = expect(tok!"struct"); if (currentIs(tok!"identifier")) node.name = advance(); else { node.name.line = t.line; node.name.column = t.column; } node.comment = comment; comment = null; if (currentIs(tok!"(")) { mixin(parseNodeQ!(`node.templateParameters`, `TemplateParameters`)); if (currentIs(tok!"if")) mixin(parseNodeQ!(`node.constraint`, `Constraint`)); } if (currentIs(tok!"{")) { mixin(parseNodeQ!(`node.structBody`, `StructBody`)); } else if (currentIs(tok!";")) advance(); else { error("Template Parameters, Struct Body, or Semicolon expected"); return null; } return node; } /** * Parses an StructInitializer * * $(GRAMMAR $(RULEDEF structInitializer): * $(LITERAL '{') $(RULE structMemberInitializers)? $(LITERAL '}') * ;) */ StructInitializer parseStructInitializer() { mixin(traceEnterAndExit!(__FUNCTION__)); auto node = allocator.make!StructInitializer; const a = expect(tok!"{"); node.startLocation = a.index; if (currentIs(tok!"}")) { node.endLocation = current.index; advance(); } else { mixin(parseNodeQ!(`node.structMemberInitializers`, `StructMemberInitializers`)); const e = expect(tok!"}"); mixin (nullCheck!`e`); node.endLocation = e.index; } return node; } /** * Parses a StructMemberInitializer * * $(GRAMMAR $(RULEDEF structMemberInitializer): * ($(LITERAL Identifier) $(LITERAL ':'))? $(RULE nonVoidInitializer) * ;) */ StructMemberInitializer parseStructMemberInitializer() { mixin(traceEnterAndExit!(__FUNCTION__)); auto node = allocator.make!StructMemberInitializer; if (startsWith(tok!"identifier", tok!":")) { node.identifier = tokens[index++]; index++; } mixin(parseNodeQ!(`node.nonVoidInitializer`, `NonVoidInitializer`)); return node; } /** * Parses StructMemberInitializers * * $(GRAMMAR $(RULEDEF structMemberInitializers): * $(RULE structMemberInitializer) ($(LITERAL ',') $(RULE structMemberInitializer)?)* * ;) */ StructMemberInitializers parseStructMemberInitializers() { mixin(traceEnterAndExit!(__FUNCTION__)); auto node = allocator.make!StructMemberInitializers; StackBuffer structMemberInitializers; do { auto c = allocator.setCheckpoint(); if (!structMemberInitializers.put(parseStructMemberInitializer())) allocator.rollback(c); if (currentIs(tok!",")) advance(); else break; } while (moreTokens() && !currentIs(tok!"}")); ownArray(node.structMemberInitializers, structMemberInitializers); return node; } /** * Parses a SwitchStatement * * $(GRAMMAR $(RULEDEF switchStatement): * $(LITERAL 'switch') $(LITERAL '$(LPAREN)') $(RULE expression) $(LITERAL '$(RPAREN)') $(RULE statement) * ;) */ SwitchStatement parseSwitchStatement() { mixin(traceEnterAndExit!(__FUNCTION__)); auto node = allocator.make!SwitchStatement; expect(tok!"switch"); expect(tok!"("); // DCD #453 // with just `switch(stuff` returns a non null node, // which allows DCD to gives completion on `stuff`. if (auto e = parseExpression()) { node.expression = e; if (currentIs(tok!")")) { advance(); // returns null only from here. mixin(parseNodeQ!(`node.statement`, `Statement`)); } } else error("Error, expression expected after `switch(`", false); return node; } /** * Parses a Symbol * * $(GRAMMAR $(RULEDEF symbol): * $(LITERAL '.')? $(RULE identifierOrTemplateChain) * ;) */ Symbol parseSymbol() { mixin(traceEnterAndExit!(__FUNCTION__)); auto node = allocator.make!Symbol; if (currentIs(tok!".")) { node.dot = true; advance(); } mixin(parseNodeQ!(`node.identifierOrTemplateChain`, `IdentifierOrTemplateChain`)); return node; } /** * Parses a SynchronizedStatement * * $(GRAMMAR $(RULEDEF synchronizedStatement): * $(LITERAL 'synchronized') ($(LITERAL '$(LPAREN)') $(RULE expression) $(LITERAL '$(RPAREN)'))? $(RULE statementNoCaseNoDefault) * ;) */ SynchronizedStatement parseSynchronizedStatement() { mixin(traceEnterAndExit!(__FUNCTION__)); expect(tok!"synchronized"); if (!moreTokens) return null; auto node = allocator.make!SynchronizedStatement; if (currentIs(tok!"(")) { expect(tok!"("); mixin(parseNodeQ!(`node.expression`, `Expression`)); expect(tok!")"); } mixin(parseNodeQ!(`node.statementNoCaseNoDefault`, `StatementNoCaseNoDefault`)); return node; } /** * Parses a TemplateAliasParameter * * $(GRAMMAR $(RULEDEF templateAliasParameter): * $(LITERAL 'alias') $(RULE type)? $(LITERAL Identifier) ($(LITERAL ':') ($(RULE type) | $(RULE assignExpression)))? ($(LITERAL '=') ($(RULE type) | $(RULE assignExpression)))? * ;) */ TemplateAliasParameter parseTemplateAliasParameter() { mixin(traceEnterAndExit!(__FUNCTION__)); auto node = allocator.make!TemplateAliasParameter; expect(tok!"alias"); if (currentIs(tok!"identifier") && !peekIs(tok!".")) { if (peekIsOneOf(tok!",", tok!")", tok!"=", tok!":")) node.identifier = advance(); else goto type; } else { type: mixin(parseNodeQ!(`node.type`, `Type`)); const ident = expect(tok!"identifier"); mixin(nullCheck!`ident`); node.identifier = *ident; } if (currentIs(tok!":")) { advance(); if (isType()) mixin(parseNodeQ!(`node.colonType`, `Type`)); else mixin(parseNodeQ!(`node.colonExpression`, `AssignExpression`)); } if (currentIs(tok!"=")) { advance(); if (isType()) mixin(parseNodeQ!(`node.assignType`, `Type`)); else mixin(parseNodeQ!(`node.assignExpression`, `AssignExpression`)); } return node; } /** * Parses a TemplateArgument * * $(GRAMMAR $(RULEDEF templateArgument): * $(RULE type) * | $(RULE assignExpression) * ;) */ TemplateArgument parseTemplateArgument() { mixin(traceEnterAndExit!(__FUNCTION__)); if (suppressedErrorCount > MAX_ERRORS) return null; auto node = allocator.make!TemplateArgument; immutable b = setBookmark(); auto t = parseType(); if (t !is null && currentIsOneOf(tok!",", tok!")")) { abandonBookmark(b); node.type = t; } else { goToBookmark(b); mixin(parseNodeQ!(`node.assignExpression`, `AssignExpression`)); } return node; } /** * Parses a TemplateArgumentList * * $(GRAMMAR $(RULEDEF templateArgumentList): * $(RULE templateArgument) ($(LITERAL ',') $(RULE templateArgument)?)* * ;) */ TemplateArgumentList parseTemplateArgumentList() { mixin(traceEnterAndExit!(__FUNCTION__)); return parseCommaSeparatedRule!(TemplateArgumentList, TemplateArgument)(true); } /** * Parses TemplateArguments * * $(GRAMMAR $(RULEDEF templateArguments): * $(LITERAL '!') ($(LITERAL '$(LPAREN)') $(RULE templateArgumentList)? $(LITERAL '$(RPAREN)')) | $(RULE templateSingleArgument) * ;) */ TemplateArguments parseTemplateArguments() { mixin(traceEnterAndExit!(__FUNCTION__)); if (suppressedErrorCount > MAX_ERRORS) return null; auto node = allocator.make!TemplateArguments; expect(tok!"!"); if (currentIs(tok!"(")) { advance(); if (!currentIs(tok!")")) mixin(parseNodeQ!(`node.templateArgumentList`, `TemplateArgumentList`)); mixin(tokenCheck!")"); } else mixin(parseNodeQ!(`node.templateSingleArgument`, `TemplateSingleArgument`)); return node; } /** * Parses a TemplateDeclaration * * $(GRAMMAR $(RULEDEF templateDeclaration): * $(LITERAL 'template') $(LITERAL Identifier) $(RULE templateParameters) $(RULE constraint)? $(LITERAL '{') $(RULE declaration)* $(LITERAL '}') * ;) */ TemplateDeclaration parseTemplateDeclaration() { mixin(traceEnterAndExit!(__FUNCTION__)); auto node = allocator.make!TemplateDeclaration; node.comment = comment; comment = null; expect(tok!"template"); const ident = expect(tok!"identifier"); mixin(nullCheck!`ident`); node.name = *ident; mixin(parseNodeQ!(`node.templateParameters`, `TemplateParameters`)); if (currentIs(tok!"if")) mixin(parseNodeQ!(`node.constraint`, `Constraint`)); const start = expect(tok!"{"); mixin(nullCheck!`start`); node.startLocation = start.index; StackBuffer declarations; while (moreTokens() && !currentIs(tok!"}")) { immutable c = allocator.setCheckpoint(); if (!declarations.put(parseDeclaration(true, true))) allocator.rollback(c); } ownArray(node.declarations, declarations); const end = expect(tok!"}"); if (end !is null) node.endLocation = end.index; return node; } /** * Parses a TemplateInstance * * $(GRAMMAR $(RULEDEF templateInstance): * $(LITERAL Identifier) $(RULE templateArguments) * ;) */ TemplateInstance parseTemplateInstance() { mixin(traceEnterAndExit!(__FUNCTION__)); if (suppressedErrorCount > MAX_ERRORS) return null; auto node = allocator.make!TemplateInstance; const ident = expect(tok!"identifier"); mixin(nullCheck!`ident`); node.identifier = *ident; mixin(parseNodeQ!(`node.templateArguments`, `TemplateArguments`)); if (node.templateArguments is null) return null; return node; } /** * Parses a TemplateMixinExpression * * $(GRAMMAR $(RULEDEF templateMixinExpression): * $(LITERAL 'mixin') $(RULE mixinTemplateName) $(RULE templateArguments)? $(LITERAL Identifier)? * ;) */ TemplateMixinExpression parseTemplateMixinExpression() { mixin(traceEnterAndExit!(__FUNCTION__)); auto node = allocator.make!TemplateMixinExpression; mixin(tokenCheck!"mixin"); mixin(parseNodeQ!(`node.mixinTemplateName`, `MixinTemplateName`)); if (currentIs(tok!"!")) mixin(parseNodeQ!(`node.templateArguments`, `TemplateArguments`)); if (currentIs(tok!"identifier")) node.identifier = advance(); return node; } /** * Parses a TemplateParameter * * $(GRAMMAR $(RULEDEF templateParameter): * $(RULE templateTypeParameter) * | $(RULE templateValueParameter) * | $(RULE templateAliasParameter) * | $(RULE templateTupleParameter) * | $(RULE templateThisParameter) * ;) */ TemplateParameter parseTemplateParameter() { mixin(traceEnterAndExit!(__FUNCTION__)); auto node = allocator.make!TemplateParameter; switch (current.type) { case tok!"alias": mixin(parseNodeQ!(`node.templateAliasParameter`, `TemplateAliasParameter`)); break; case tok!"identifier": if (peekIs(tok!"...")) mixin(parseNodeQ!(`node.templateTupleParameter`, `TemplateTupleParameter`)); else if (peekIsOneOf(tok!":", tok!"=", tok!",", tok!")")) mixin(parseNodeQ!(`node.templateTypeParameter`, `TemplateTypeParameter`)); else mixin(parseNodeQ!(`node.templateValueParameter`, `TemplateValueParameter`)); break; case tok!"this": mixin(parseNodeQ!(`node.templateThisParameter`, `TemplateThisParameter`)); break; default: mixin(parseNodeQ!(`node.templateValueParameter`, `TemplateValueParameter`)); break; } return node; } /** * Parses a TemplateParameterList * * $(GRAMMAR $(RULEDEF templateParameterList): * $(RULE templateParameter) ($(LITERAL ',') $(RULE templateParameter)?)* $(LITERAL ',')? * ;) */ TemplateParameterList parseTemplateParameterList() { mixin(traceEnterAndExit!(__FUNCTION__)); return parseCommaSeparatedRule!(TemplateParameterList, TemplateParameter)(true); } /** * Parses TemplateParameters * * $(GRAMMAR $(RULEDEF templateParameters): * $(LITERAL '$(LPAREN)') $(RULE templateParameterList)? $(LITERAL '$(RPAREN)') * ;) */ TemplateParameters parseTemplateParameters() { mixin(traceEnterAndExit!(__FUNCTION__)); auto node = allocator.make!TemplateParameters; mixin(tokenCheck!"("); if (!currentIs(tok!")")) mixin(parseNodeQ!(`node.templateParameterList`, `TemplateParameterList`)); mixin(tokenCheck!")"); return node; } /** * Parses a TemplateSingleArgument * * $(GRAMMAR $(RULEDEF templateSingleArgument): * $(RULE builtinType) * | $(LITERAL Identifier) * | $(LITERAL CharacterLiteral) * | $(LITERAL StringLiteral) * | $(LITERAL IntegerLiteral) * | $(LITERAL FloatLiteral) * | $(LITERAL '_true') * | $(LITERAL '_false') * | $(LITERAL '_null') * | $(LITERAL 'this') * | $(LITERAL '___DATE__') * | $(LITERAL '___FILE__') * | $(LITERAL '___FILE_FULL_PATH__') * | $(LITERAL '___FUNCTION__') * | $(LITERAL '___LINE__') * | $(LITERAL '___MODULE__') * | $(LITERAL '___PRETTY_FUNCTION__') * | $(LITERAL '___TIME__') * | $(LITERAL '___TIMESTAMP__') * | $(LITERAL '___VENDOR__') * | $(LITERAL '___VERSION__') * ;) */ TemplateSingleArgument parseTemplateSingleArgument() { mixin(traceEnterAndExit!(__FUNCTION__)); auto node = allocator.make!TemplateSingleArgument; if (!moreTokens) { error("template argument expected instead of EOF"); return null; } switch (current.type) { case tok!"this": case tok!"identifier": foreach (B; Literals) { case B: } foreach (C; BasicTypes) { case C: } node.token = advance(); break; default: error(`Invalid template argument. (Try enclosing in parenthesis?)`); return null; } return node; } /** * Parses a TemplateThisParameter * * $(GRAMMAR $(RULEDEF templateThisParameter): * $(LITERAL 'this') $(RULE templateTypeParameter) * ;) */ TemplateThisParameter parseTemplateThisParameter() { mixin(traceEnterAndExit!(__FUNCTION__)); auto node = allocator.make!TemplateThisParameter; expect(tok!"this"); mixin(parseNodeQ!(`node.templateTypeParameter`, `TemplateTypeParameter`)); return node; } /** * Parses an TemplateTupleParameter * * $(GRAMMAR $(RULEDEF templateTupleParameter): * $(LITERAL Identifier) $(LITERAL '...') * ;) */ TemplateTupleParameter parseTemplateTupleParameter() { mixin(traceEnterAndExit!(__FUNCTION__)); auto node = allocator.make!TemplateTupleParameter; const i = expect(tok!"identifier"); if (i is null) return null; node.identifier = *i; mixin(tokenCheck!"..."); return node; } /** * Parses a TemplateTypeParameter * * $(GRAMMAR $(RULEDEF templateTypeParameter): * $(LITERAL Identifier) ($(LITERAL ':') $(RULE type))? ($(LITERAL '=') $(RULE type))? * ;) */ TemplateTypeParameter parseTemplateTypeParameter() { mixin(traceEnterAndExit!(__FUNCTION__)); auto node = allocator.make!TemplateTypeParameter; const ident = expect(tok!"identifier"); mixin(nullCheck!`ident`); node.identifier = *ident; if (currentIs(tok!":")) { advance(); mixin(parseNodeQ!(`node.colonType`, `Type`)); } if (currentIs(tok!"=")) { advance(); mixin(parseNodeQ!(`node.assignType`, `Type`)); } return node; } /** * Parses a TemplateValueParameter * * $(GRAMMAR $(RULEDEF templateValueParameter): * $(RULE type) $(LITERAL Identifier) ($(LITERAL ':') $(RULE assignExpression))? $(RULE templateValueParameterDefault)? * ;) */ TemplateValueParameter parseTemplateValueParameter() { mixin(traceEnterAndExit!(__FUNCTION__)); auto node = allocator.make!TemplateValueParameter; mixin(parseNodeQ!(`node.type`, `Type`)); mixin(tokenCheck!(`node.identifier`, "identifier")); if (currentIs(tok!":")) { advance(); mixin(parseNodeQ!(`node.assignExpression`, `AssignExpression`)); } if (currentIs(tok!"=")) mixin(parseNodeQ!(`node.templateValueParameterDefault`, `TemplateValueParameterDefault`)); return node; } /** * Parses a TemplateValueParameterDefault * * $(GRAMMAR $(RULEDEF templateValueParameterDefault): * $(LITERAL '=') $(LITERAL '___DATE__') * | $(LITERAL '=') $(LITERAL '___FILE__') * | $(LITERAL '=') $(LITERAL '___FILE_FULL_PATH__') * | $(LITERAL '=') $(LITERAL '___FUNCTION__') * | $(LITERAL '=') $(LITERAL '___LINE__') * | $(LITERAL '=') $(LITERAL '___MODULE__') * | $(LITERAL '=') $(LITERAL '___PRETTY_FUNCTION__') * | $(LITERAL '=') $(LITERAL '___TIME__') * | $(LITERAL '=') $(LITERAL '___TIMESTAMP__') * | $(LITERAL '=') $(LITERAL '___VENDOR__') * | $(LITERAL '=') $(LITERAL '___VERSION__') * | $(LITERAL '=') $(RULE assignExpression) * ;) */ TemplateValueParameterDefault parseTemplateValueParameterDefault() { mixin(traceEnterAndExit!(__FUNCTION__)); auto node = allocator.make!TemplateValueParameterDefault; expect(tok!"="); switch (current.type) { case tok!"__FILE__": case tok!"__FILE_FULL_PATH__": case tok!"__MODULE__": case tok!"__LINE__": case tok!"__FUNCTION__": case tok!"__PRETTY_FUNCTION__": node.token = advance(); break; default: mixin(parseNodeQ!(`node.assignExpression`, `AssignExpression`)); break; } return node; } /** * Parses a TernaryExpression * * $(GRAMMAR $(RULEDEF ternaryExpression): * $(RULE orOrExpression) ($(LITERAL '?') $(RULE expression) $(LITERAL ':') $(RULE ternaryExpression))? * ;) */ ExpressionNode parseTernaryExpression() { mixin(traceEnterAndExit!(__FUNCTION__)); auto orOrExpression = parseOrOrExpression(); if (orOrExpression is null) return null; if (currentIs(tok!"?")) { TernaryExpression node = allocator.make!TernaryExpression; node.orOrExpression = orOrExpression; advance(); mixin(parseNodeQ!(`node.expression`, `Expression`)); auto colon = expect(tok!":"); mixin(nullCheck!`colon`); node.colon = *colon; mixin(parseNodeQ!(`node.ternaryExpression`, `TernaryExpression`)); return node; } return orOrExpression; } /** * Parses a ThrowStatement * * $(GRAMMAR $(RULEDEF throwStatement): * $(LITERAL 'throw') $(RULE expression) $(LITERAL ';') * ;) */ ThrowStatement parseThrowStatement() { mixin(traceEnterAndExit!(__FUNCTION__)); auto node = allocator.make!ThrowStatement; expect(tok!"throw"); mixin(parseNodeQ!(`node.expression`, `Expression`)); expect(tok!";"); return node; } /** * Parses an TraitsExpression * * $(GRAMMAR $(RULEDEF traitsExpression): * $(LITERAL '___traits') $(LITERAL '$(LPAREN)') $(LITERAL Identifier) $(LITERAL ',') $(RULE templateArgumentList) $(LITERAL '$(RPAREN)') * ;) */ TraitsExpression parseTraitsExpression() { mixin(traceEnterAndExit!(__FUNCTION__)); auto node = allocator.make!TraitsExpression; mixin(tokenCheck!"__traits"); mixin(tokenCheck!"("); const ident = expect(tok!"identifier"); mixin(nullCheck!`ident`); node.identifier = *ident; if (currentIs(tok!",")) { advance(); mixin (nullCheck!`(node.templateArgumentList = parseTemplateArgumentList())`); } mixin(tokenCheck!")"); return node; } /** * Parses a TryStatement * * $(GRAMMAR $(RULEDEF tryStatement): * $(LITERAL 'try') $(RULE declarationOrStatement) ($(RULE catches) | $(RULE catches) $(RULE finally) | $(RULE finally)) * ;) */ TryStatement parseTryStatement() { mixin(traceEnterAndExit!(__FUNCTION__)); auto node = allocator.make!TryStatement; expect(tok!"try"); mixin(parseNodeQ!(`node.declarationOrStatement`, `DeclarationOrStatement`)); if (currentIs(tok!"catch")) mixin(parseNodeQ!(`node.catches`, `Catches`)); if (currentIs(tok!"finally")) mixin(parseNodeQ!(`node.finally_`, `Finally`)); return node; } /** * Parses a Type * * $(GRAMMAR $(RULEDEF type): * $(RULE typeConstructors)? $(RULE type2) $(RULE typeSuffix)* * ;) */ Type parseType() { mixin(traceEnterAndExit!(__FUNCTION__)); auto node = allocator.make!Type; if (!moreTokens) { error("type expected"); return null; } switch (current.type) { case tok!"const": case tok!"immutable": case tok!"inout": case tok!"shared": if (!peekIs(tok!"(")) mixin(parseNodeQ!(`node.typeConstructors`, `TypeConstructors`)); break; default: break; } mixin(parseNodeQ!(`node.type2`, `Type2`)); StackBuffer typeSuffixes; loop: while (moreTokens()) switch (current.type) { case tok!"[": // Allow this to fail because of the madness that is the // newExpression rule. Something starting with '[' may be arguments // to the newExpression instead of part of the type auto newBookmark = setBookmark(); auto c = allocator.setCheckpoint(); if (typeSuffixes.put(parseTypeSuffix())) abandonBookmark(newBookmark); else { allocator.rollback(c); goToBookmark(newBookmark); break loop; } break; case tok!"*": case tok!"delegate": case tok!"function": if (!typeSuffixes.put(parseTypeSuffix())) return null; break; default: break loop; } ownArray(node.typeSuffixes, typeSuffixes); return node; } /** * Parses a Type2 * * $(GRAMMAR $(RULEDEF type2): * $(RULE builtinType) * | $(RULE typeIdentifierPart) * | $(LITERAL 'super') $(LITERAL '.') $(RULE typeIdentifierPart) * | $(LITERAL 'this') $(LITERAL '.') $(RULE typeIdentifierPart) * | $(RULE typeofExpression) ($(LITERAL '.') $(RULE typeIdentifierPart))? * | $(RULE typeConstructor) $(LITERAL '$(LPAREN)') $(RULE type) $(LITERAL '$(RPAREN)') * | $(RULE vector) * ;) */ Type2 parseType2() { mixin(traceEnterAndExit!(__FUNCTION__)); auto node = allocator.make!Type2; if (!moreTokens) { error("type2 expected instead of EOF"); return null; } switch (current.type) { case tok!"identifier": case tok!".": mixin(parseNodeQ!(`node.typeIdentifierPart`, `TypeIdentifierPart`)); break; foreach (B; BasicTypes) { case B: } node.builtinType = parseBuiltinType(); break; case tok!"super": case tok!"this": node.superOrThis = advance().type; mixin(tokenCheck!"."); mixin(parseNodeQ!(`node.typeIdentifierPart`, `TypeIdentifierPart`)); break; case tok!"typeof": if ((node.typeofExpression = parseTypeofExpression()) is null) return null; if (currentIs(tok!".")) { advance(); mixin(parseNodeQ!(`node.typeIdentifierPart`, `TypeIdentifierPart`)); } break; case tok!"const": case tok!"immutable": case tok!"inout": case tok!"shared": node.typeConstructor = advance().type; mixin(tokenCheck!"("); mixin (nullCheck!`(node.type = parseType())`); mixin(tokenCheck!")"); break; case tok!"__vector": if ((node.vector = parseVector()) is null) return null; break; default: error("Basic type, type constructor, symbol, or typeof expected"); return null; } return node; } /** * Parses a TypeConstructor * * $(GRAMMAR $(RULEDEF typeConstructor): * $(LITERAL 'const') * | $(LITERAL 'immutable') * | $(LITERAL 'inout') * | $(LITERAL 'shared') * ;) */ IdType parseTypeConstructor(bool validate = true) { mixin(traceEnterAndExit!(__FUNCTION__)); switch (current.type) { case tok!"const": case tok!"immutable": case tok!"inout": case tok!"shared": if (!peekIs(tok!"(")) return advance().type; goto default; default: if (validate) error("`const`, `immutable`, `inout`, or `shared` expected"); return tok!""; } } /** * Parses TypeConstructors * * $(GRAMMAR $(RULEDEF typeConstructors): * $(RULE typeConstructor)+ * ;) */ IdType[] parseTypeConstructors() { mixin(traceEnterAndExit!(__FUNCTION__)); IdType[] r; while (moreTokens()) { IdType type = parseTypeConstructor(false); if (type == tok!"") break; else r ~= type; } return r; } /** * Parses a TypeSpecialization * * $(GRAMMAR $(RULEDEF typeSpecialization): * $(RULE type) * | $(LITERAL 'struct') * | $(LITERAL 'union') * | $(LITERAL 'class') * | $(LITERAL 'interface') * | $(LITERAL 'enum') * | $(LITERAL 'function') * | $(LITERAL 'delegate') * | $(LITERAL 'super') * | $(LITERAL 'const') * | $(LITERAL 'immutable') * | $(LITERAL 'inout') * | $(LITERAL 'shared') * | $(LITERAL 'return') * | $(LITERAL 'typedef') * | $(LITERAL '___parameters') * ;) */ TypeSpecialization parseTypeSpecialization() { mixin(traceEnterAndExit!(__FUNCTION__)); auto node = allocator.make!TypeSpecialization; switch (current.type) { case tok!"struct": case tok!"union": case tok!"class": case tok!"interface": case tok!"enum": case tok!"function": case tok!"delegate": case tok!"super": case tok!"return": case tok!"typedef": case tok!"__parameters": case tok!"const": case tok!"immutable": case tok!"inout": case tok!"shared": if (peekIsOneOf(tok!")", tok!",")) { node.token = advance(); break; } goto default; default: mixin(parseNodeQ!(`node.type`, `Type`)); break; } return node; } /** * Parses a TypeSuffix * * $(GRAMMAR $(RULEDEF typeSuffix): * $(LITERAL '*') * | $(LITERAL '[') $(RULE type)? $(LITERAL ']') * | $(LITERAL '[') $(RULE assignExpression) $(LITERAL ']') * | $(LITERAL '[') $(RULE assignExpression) $(LITERAL '..') $(RULE assignExpression) $(LITERAL ']') * | ($(LITERAL 'delegate') | $(LITERAL 'function')) $(RULE parameters) $(RULE memberFunctionAttribute)* * ;) */ TypeSuffix parseTypeSuffix() { mixin(traceEnterAndExit!(__FUNCTION__)); auto node = allocator.make!TypeSuffix; switch (current.type) { case tok!"*": node.star = advance(); return node; case tok!"[": node.array = true; advance(); if (currentIs(tok!"]")) { advance(); return node; } auto bookmark = setBookmark(); auto type = parseType(); if (type !is null && currentIs(tok!"]")) { abandonBookmark(bookmark); node.type = type; } else { goToBookmark(bookmark); mixin(parseNodeQ!(`node.low`, `AssignExpression`)); mixin (nullCheck!`node.low`); if (currentIs(tok!"..")) { advance(); mixin(parseNodeQ!(`node.high`, `AssignExpression`)); mixin (nullCheck!`node.high`); } } mixin(tokenCheck!"]"); return node; case tok!"delegate": case tok!"function": node.delegateOrFunction = advance(); mixin(parseNodeQ!(`node.parameters`, `Parameters`)); StackBuffer memberFunctionAttributes; while (currentIsMemberFunctionAttribute()) if (!memberFunctionAttributes.put(parseMemberFunctionAttribute())) return null; ownArray(node.memberFunctionAttributes, memberFunctionAttributes); return node; default: error("`*`, `[`, `delegate`, or `function` expected."); return null; } } /** * Parses a TypeidExpression * * $(GRAMMAR $(RULEDEF typeidExpression): * $(LITERAL 'typeid') $(LITERAL '$(LPAREN)') ($(RULE type) | $(RULE expression)) $(LITERAL '$(RPAREN)') * ;) */ TypeidExpression parseTypeidExpression() { mixin(traceEnterAndExit!(__FUNCTION__)); auto node = allocator.make!TypeidExpression; expect(tok!"typeid"); expect(tok!"("); immutable b = setBookmark(); auto t = parseType(); if (t is null || !currentIs(tok!")")) { goToBookmark(b); mixin(parseNodeQ!(`node.expression`, `Expression`)); mixin (nullCheck!`node.expression`); } else { abandonBookmark(b); node.type = t; } expect(tok!")"); return node; } /** * Parses a TypeofExpression * * $(GRAMMAR $(RULEDEF typeofExpression): * $(LITERAL 'typeof') $(LITERAL '$(LPAREN)') ($(RULE expression) | $(LITERAL 'return')) $(LITERAL '$(RPAREN)') * ;) */ TypeofExpression parseTypeofExpression() { mixin(traceEnterAndExit!(__FUNCTION__)); auto node = allocator.make!TypeofExpression; expect(tok!"typeof"); expect(tok!"("); if (currentIs(tok!"return")) node.return_ = advance(); else mixin(parseNodeQ!(`node.expression`, `Expression`)); expect(tok!")"); return node; } /** * Parses a UnaryExpression * * $(GRAMMAR $(RULEDEF unaryExpression): * $(RULE primaryExpression) * | $(LITERAL '&') $(RULE unaryExpression) * | $(LITERAL '!') $(RULE unaryExpression) * | $(LITERAL '*') $(RULE unaryExpression) * | $(LITERAL '+') $(RULE unaryExpression) * | $(LITERAL '-') $(RULE unaryExpression) * | $(LITERAL '~') $(RULE unaryExpression) * | $(LITERAL '++') $(RULE unaryExpression) * | $(LITERAL '--') $(RULE unaryExpression) * | $(RULE newExpression) * | $(RULE deleteExpression) * | $(RULE castExpression) * | $(RULE assertExpression) * | $(RULE functionCallExpression) * | $(RULE indexExpression) * | $(LITERAL '$(LPAREN)') $(RULE type) $(LITERAL '$(RPAREN)') $(LITERAL '.') $(RULE identifierOrTemplateInstance) * | $(RULE unaryExpression) $(LITERAL '.') $(RULE newExpression) * | $(RULE unaryExpression) $(LITERAL '.') $(RULE identifierOrTemplateInstance) * | $(RULE unaryExpression) $(LITERAL '--') * | $(RULE unaryExpression) $(LITERAL '++') * ;) */ UnaryExpression parseUnaryExpression() { mixin(traceEnterAndExit!(__FUNCTION__)); if (!moreTokens()) return null; auto node = allocator.make!UnaryExpression; switch (current.type) { case tok!"const": case tok!"immutable": case tok!"inout": case tok!"shared": immutable b = setBookmark(); if (peekIs(tok!"(")) { advance(); const past = peekPastParens(); if (past !is null && past.type == tok!".") { goToBookmark(b); goto default; } } goToBookmark(b); goto case; case tok!"scope": case tok!"pure": case tok!"nothrow": mixin(parseNodeQ!(`node.functionCallExpression`, `FunctionCallExpression`)); break; case tok!"&": case tok!"!": case tok!"*": case tok!"+": case tok!"-": case tok!"~": case tok!"++": case tok!"--": node.prefix = advance(); mixin(parseNodeQ!(`node.unaryExpression`, `UnaryExpression`)); break; case tok!"new": mixin(parseNodeQ!(`node.newExpression`, `NewExpression`)); break; case tok!"delete": mixin(parseNodeQ!(`node.deleteExpression`, `DeleteExpression`)); break; case tok!"cast": mixin(parseNodeQ!(`node.castExpression`, `CastExpression`)); break; case tok!"assert": mixin(parseNodeQ!(`node.assertExpression`, `AssertExpression`)); break; case tok!"(": // handle (type).identifier immutable b = setBookmark(); skipParens(); if (startsWith(tok!".", tok!"identifier")) { // go back to the ( goToBookmark(b); immutable b2 = setBookmark(); advance(); auto t = parseType(); if (t is null || !currentIs(tok!")")) { goToBookmark(b); goto default; } abandonBookmark(b2); node.type = t; advance(); // ) advance(); // . mixin(parseNodeQ!(`node.identifierOrTemplateInstance`, `IdentifierOrTemplateInstance`)); break; } else { // not (type).identifier, so treat as primary expression goToBookmark(b); goto default; } default: mixin(parseNodeQ!(`node.primaryExpression`, `PrimaryExpression`)); break; } loop: while (moreTokens()) switch (current.type) { case tok!"!": if (peekIs(tok!"(")) { index++; const p = peekPastParens(); immutable bool jump = (currentIs(tok!"(") && p !is null && p.type == tok!"(") || peekIs(tok!"("); index--; if (jump) goto case tok!"("; else break loop; } else break loop; case tok!"(": auto newUnary = allocator.make!UnaryExpression(); // Allows DCD to get the call tips // see https://github.com/dlang-community/DCD/issues/405 if (peekIs(tok!"}")) { error("Error, expected parameters or `)`", false); advance(); return newUnary; } mixin (nullCheck!`newUnary.functionCallExpression = parseFunctionCallExpression(node)`); node = newUnary; break; case tok!"++": case tok!"--": auto n = allocator.make!UnaryExpression(); n.unaryExpression = node; n.suffix = advance(); node = n; break; case tok!"[": auto n = allocator.make!UnaryExpression; n.indexExpression = parseIndexExpression(node); node = n; break; case tok!".": node.dotLocation = current.index; advance(); auto n = allocator.make!UnaryExpression(); n.unaryExpression = node; if (currentIs(tok!"new")) mixin(parseNodeQ!(`node.newExpression`, `NewExpression`)); else n.identifierOrTemplateInstance = parseIdentifierOrTemplateInstance(); node = n; break; default: break loop; } return node; } /** * Parses an UnionDeclaration * * $(GRAMMAR $(RULEDEF unionDeclaration): * $(LITERAL 'union') $(LITERAL Identifier) ($(RULE templateParameters) $(RULE constraint)?)? ($(RULE structBody) | $(LITERAL ';')) * | $(LITERAL 'union') $(RULE structBody) * ;) */ UnionDeclaration parseUnionDeclaration() { mixin(traceEnterAndExit!(__FUNCTION__)); auto node = allocator.make!UnionDeclaration; node.comment = comment; comment = null; // grab line number even if it's anonymous const t = expect(tok!"union"); if (currentIs(tok!"identifier")) { node.name = advance(); if (currentIs(tok!"(")) { mixin(parseNodeQ!(`node.templateParameters`, `TemplateParameters`)); if (currentIs(tok!"if")) mixin(parseNodeQ!(`node.constraint`, `Constraint`)); } goto semiOrStructBody; } else { node.name.line = t.line; node.name.column = t.column; semiOrStructBody: if (currentIs(tok!";")) advance(); else mixin(parseNodeQ!(`node.structBody`, `StructBody`)); } return node; } /** * Parses a Unittest * * $(GRAMMAR $(RULEDEF unittest): * $(LITERAL 'unittest') $(RULE blockStatement) * ;) */ Unittest parseUnittest() { mixin(traceEnterAndExit!(__FUNCTION__)); mixin (simpleParse!(Unittest, tok!"unittest", "blockStatement|parseBlockStatement")); } /** * Parses a VariableDeclaration * * $(GRAMMAR $(RULEDEF variableDeclaration): * $(RULE storageClass)* $(RULE _type) $(RULE declarator) ($(LITERAL ',') $(RULE declarator))* $(LITERAL ';') * | $(RULE storageClass)* $(RULE _type) $(LITERAL identifier) $(LITERAL '=') $(RULE functionBody) $(LITERAL ';') * | $(RULE autoDeclaration) * ;) */ VariableDeclaration parseVariableDeclaration(Type type = null, bool isAuto = false) { mixin (traceEnterAndExit!(__FUNCTION__)); auto node = allocator.make!VariableDeclaration; if (isAuto) { mixin(parseNodeQ!(`node.autoDeclaration`, `AutoDeclaration`)); node.comment = node.autoDeclaration.comment; return node; } StackBuffer storageClasses; while (isStorageClass()) if (!storageClasses.put(parseStorageClass())) return null; ownArray(node.storageClasses, storageClasses); node.type = type is null ? parseType() : type; node.comment = comment; comment = null; // TODO: handle function bodies correctly StackBuffer declarators; Declarator last; while (true) { auto declarator = parseDeclarator(); if (!declarators.put(declarator)) return null; else last = declarator; if (moreTokens() && currentIs(tok!",")) { if (node.comment !is null) declarator.comment = node.comment ~ "\n" ~ current.trailingComment; else declarator.comment = current.trailingComment; advance(); } else break; } ownArray(node.declarators, declarators); const semicolon = expect(tok!";"); mixin (nullCheck!`semicolon`); if (node.comment !is null) { if (semicolon.trailingComment is null) last.comment = node.comment; else last.comment = node.comment ~ "\n" ~ semicolon.trailingComment; } else last.comment = semicolon.trailingComment; return node; } /** * Parses a Vector * * $(GRAMMAR $(RULEDEF vector): * $(LITERAL '___vector') $(LITERAL '$(LPAREN)') $(RULE type) $(LITERAL '$(RPAREN)') * ;) */ Vector parseVector() { mixin(traceEnterAndExit!(__FUNCTION__)); mixin (simpleParse!(Vector, tok!"__vector", tok!"(", "type|parseType", tok!")")); } /** * Parses a VersionCondition * * $(GRAMMAR $(RULEDEF versionCondition): * $(LITERAL 'version') $(LITERAL '$(LPAREN)') ($(LITERAL IntegerLiteral) | $(LITERAL Identifier) | $(LITERAL 'unittest') | $(LITERAL 'assert')) $(LITERAL '$(RPAREN)') * ;) */ VersionCondition parseVersionCondition() { mixin(traceEnterAndExit!(__FUNCTION__)); auto node = allocator.make!VersionCondition; const v = expect(tok!"version"); mixin(nullCheck!`v`); node.versionIndex = v.index; mixin(tokenCheck!"("); if (currentIsOneOf(tok!"intLiteral", tok!"identifier", tok!"unittest", tok!"assert")) node.token = advance(); else { error("Expected an integer literal, an identifier, `assert`, or `unittest`"); return null; } expect(tok!")"); return node; } /** * Parses a VersionSpecification * * $(GRAMMAR $(RULEDEF versionSpecification): * $(LITERAL 'version') $(LITERAL '=') ($(LITERAL Identifier) | $(LITERAL IntegerLiteral)) $(LITERAL ';') * ;) */ VersionSpecification parseVersionSpecification() { mixin(traceEnterAndExit!(__FUNCTION__)); auto node = allocator.make!VersionSpecification; mixin(tokenCheck!"version"); mixin(tokenCheck!"="); if (!currentIsOneOf(tok!"identifier", tok!"intLiteral")) { error("Identifier or integer literal expected"); return null; } node.token = advance(); expect(tok!";"); return node; } /** * Parses a WhileStatement * * $(GRAMMAR $(RULEDEF whileStatement): * $(LITERAL 'while') $(LITERAL '$(LPAREN)') $(RULE expression) $(LITERAL '$(RPAREN)') $(RULE declarationOrStatement) * ;) */ WhileStatement parseWhileStatement() { mixin(traceEnterAndExit!(__FUNCTION__)); auto node = allocator.make!WhileStatement; mixin(tokenCheck!"while"); if (moreTokens) node.startIndex = current().index; mixin(tokenCheck!"("); mixin(parseNodeQ!(`node.expression`, `Expression`)); mixin(tokenCheck!")"); if (currentIs(tok!"}")) { error("Statement expected", false); return node; // this line makes DCD better } mixin(parseNodeQ!(`node.declarationOrStatement`, `DeclarationOrStatement`)); return node; } /** * Parses a WithStatement * * $(GRAMMAR $(RULEDEF withStatement): * $(LITERAL 'with') $(LITERAL '$(LPAREN)') $(RULE expression) $(LITERAL '$(RPAREN)') $(RULE declarationOrStatement) * ;) */ WithStatement parseWithStatement() { mixin(traceEnterAndExit!(__FUNCTION__)); auto node = allocator.make!WithStatement; mixin(tokenCheck!"with"); mixin(tokenCheck!"("); mixin(parseNodeQ!(`node.expression`, `Expression`)); mixin(tokenCheck!")"); if (currentIs(tok!"}")) { error("Statement expected", false); return node; // this line makes DCD better } mixin(parseNodeQ!(`node.declarationOrStatement`, `DeclarationOrStatement`)); return node; } /** * Parses an XorExpression * * $(GRAMMAR $(RULEDEF xorExpression): * $(RULE andExpression) * | $(RULE xorExpression) $(LITERAL '^') $(RULE andExpression) * ;) */ ExpressionNode parseXorExpression() { mixin(traceEnterAndExit!(__FUNCTION__)); return parseLeftAssocBinaryExpression!(XorExpression, AndExpression, tok!"^")(); } /** * Current error count */ uint errorCount; /** * Current warning count */ uint warningCount; /** * Name used when reporting warnings and errors */ string fileName; /** * Tokens to parse */ const(Token)[] tokens; /** * Allocator used for creating AST nodes */ RollbackAllocator* allocator; /** * Function that is called when a warning or error is encountered. * The parameters are the file name, line number, column number, * and the error or warning message. */ deprecated("Use 'messageDg' instead") public alias messageFunction = messageFunction_; /// Ditto public void delegate(string, size_t, size_t, string, bool) messageDg; /// Ditto private void function(string, size_t, size_t, string, bool) messageFunction_; void setTokens(const(Token)[] tokens) { this.tokens = tokens; } /** * Returns: true if there are more tokens */ bool moreTokens() const nothrow pure @safe @nogc { return index < tokens.length; } protected: final: uint suppressedErrorCount; enum MAX_ERRORS = 500; void ownArray(T)(ref T[] arr, ref StackBuffer sb) { if (sb.length == 0) return; void[] a = allocator.allocate(sb.length); a[] = sb[]; arr = cast(T[]) a; } bool isCastQualifier() const { switch (current.type) { case tok!"const": if (peekIs(tok!")")) return true; return startsWith(tok!"const", tok!"shared", tok!")"); case tok!"immutable": return peekIs(tok!")"); case tok!"inout": if (peekIs(tok!")")) return true; return startsWith(tok!"inout", tok!"shared", tok!")"); case tok!"shared": if (peekIs(tok!")")) return true; if (startsWith(tok!"shared", tok!"const", tok!")")) return true; return startsWith(tok!"shared", tok!"inout", tok!")"); default: return false; } } bool isAssociativeArrayLiteral() { mixin(traceEnterAndExit!(__FUNCTION__)); if (auto p = current.index in cachedAAChecks) return *p; size_t currentIndex = current.index; immutable b = setBookmark(); scope(exit) goToBookmark(b); advance(); immutable bool result = !currentIs(tok!"]") && parseExpression() !is null && currentIs(tok!":"); cachedAAChecks[currentIndex] = result; return result; } bool hasMagicDelimiter(alias L, alias T)() { mixin(traceEnterAndExit!(__FUNCTION__)); immutable i = index; scope(exit) index = i; assert (currentIs(L)); advance(); while (moreTokens()) switch (current.type) { case tok!"{": skipBraces(); break; case tok!"(": skipParens(); break; case tok!"[": skipBrackets(); break; case tok!"]": case tok!"}": return false; case T: return true; default: advance(); break; } return false; } enum DecType { autoVar, autoFun, other } DecType isAutoDeclaration(ref size_t beginIndex) nothrow @nogc @safe { immutable b = setBookmark(); scope(exit) goToBookmark(b); loop: while (moreTokens()) switch (current().type) { case tok!"pragma": beginIndex = size_t.max; advance(); if (currentIs(tok!"(")) { skipParens(); break; } else return DecType.other; case tok!"package": case tok!"private": case tok!"protected": case tok!"public": beginIndex = size_t.max; advance(); break; case tok!"@": beginIndex = min(beginIndex, index); advance(); if (currentIs(tok!"(")) skipParens(); else if (currentIs(tok!"identifier")) { advance(); if (currentIs(tok!"!")) { advance(); if (currentIs(tok!"(")) skipParens(); else advance(); } if (currentIs(tok!"(")) skipParens(); } else return DecType.other; break; case tok!"deprecated": case tok!"align": case tok!"extern": beginIndex = min(beginIndex, index); advance(); if (currentIs(tok!"(")) skipParens(); break; case tok!"const": case tok!"immutable": case tok!"inout": case tok!"synchronized": if (peekIs(tok!"(")) return DecType.other; else { beginIndex = min(beginIndex, index); advance(); break; } case tok!"auto": case tok!"enum": case tok!"export": case tok!"final": case tok!"__gshared": case tok!"nothrow": case tok!"override": case tok!"pure": case tok!"ref": case tok!"scope": case tok!"shared": case tok!"static": beginIndex = min(beginIndex, index); advance(); break; default: break loop; } if (index <= b) return DecType.other; if (startsWith(tok!"identifier", tok!"=")) return DecType.autoVar; if (startsWith(tok!"identifier", tok!"(")) { advance(); auto past = peekPastParens(); if (past is null) return DecType.other; else if (past.type == tok!"=") return DecType.autoVar; else return DecType.autoFun; } return DecType.other; } bool isDeclaration() { mixin(traceEnterAndExit!(__FUNCTION__)); if (!moreTokens()) return false; switch (current.type) { case tok!"final": return !peekIs(tok!"switch"); case tok!"debug": if (peekIs(tok!":")) return true; goto case; case tok!"version": if (peekIs(tok!"=")) return true; if (peekIs(tok!"(")) goto default; return false; case tok!"synchronized": if (peekIs(tok!"(")) return false; else goto default; case tok!"static": if (peekIs(tok!"if")) return false; else if (peekIs(tok!"foreach") || peekIs(tok!"foreach_reverse")) goto default; goto case; case tok!"scope": if (peekIs(tok!"(")) return false; goto case; case tok!"@": case tok!"abstract": case tok!"alias": case tok!"align": case tok!"auto": case tok!"class": case tok!"deprecated": case tok!"enum": case tok!"export": case tok!"extern": case tok!"__gshared": case tok!"interface": case tok!"nothrow": case tok!"override": case tok!"package": case tok!"private": case tok!"protected": case tok!"public": case tok!"pure": case tok!"ref": case tok!"struct": case tok!"union": case tok!"unittest": return true; foreach (B; BasicTypes) { case B: } return !peekIsOneOf(tok!".", tok!"("); case tok!"asm": case tok!"break": case tok!"case": case tok!"continue": case tok!"default": case tok!"do": case tok!"for": case tok!"foreach": case tok!"foreach_reverse": case tok!"goto": case tok!"if": case tok!"return": case tok!"switch": case tok!"throw": case tok!"try": case tok!"while": case tok!"{": case tok!"assert": return false; default: immutable b = setBookmark(); scope(exit) goToBookmark(b); auto c = allocator.setCheckpoint(); scope(exit) allocator.rollback(c); return parseDeclaration(true, true) !is null; } } /// Only use this in template parameter parsing bool isType() { if (!moreTokens()) return false; immutable b = setBookmark(); scope (exit) goToBookmark(b); auto c = allocator.setCheckpoint(); scope (exit) allocator.rollback(c); if (parseType() is null) return false; return currentIsOneOf(tok!",", tok!")", tok!"="); } bool isStorageClass() { if (!moreTokens()) return false; switch (current.type) { case tok!"const": case tok!"immutable": case tok!"inout": case tok!"shared": return !peekIs(tok!"("); case tok!"@": case tok!"deprecated": case tok!"abstract": case tok!"align": case tok!"auto": case tok!"enum": case tok!"extern": case tok!"final": case tok!"nothrow": case tok!"override": case tok!"pure": case tok!"ref": case tok!"__gshared": case tok!"scope": case tok!"static": case tok!"synchronized": return true; default: return false; } } bool isAttribute() { if (!moreTokens()) return false; switch (current.type) { case tok!"const": case tok!"immutable": case tok!"inout": case tok!"scope": return !peekIs(tok!"("); case tok!"static": return !peekIsOneOf(tok!"assert", tok!"this", tok!"if", tok!"~", tok!"foreach", tok!"foreach_reverse"); case tok!"shared": return !(startsWith(tok!"shared", tok!"static", tok!"this") || startsWith(tok!"shared", tok!"static", tok!"~") || peekIs(tok!"(")); case tok!"pragma": immutable b = setBookmark(); scope(exit) goToBookmark(b); advance(); const past = peekPastParens(); if (past is null || *past == tok!";") return false; return true; case tok!"deprecated": case tok!"private": case tok!"package": case tok!"protected": case tok!"public": case tok!"export": case tok!"final": case tok!"synchronized": case tok!"override": case tok!"abstract": case tok!"auto": case tok!"__gshared": case tok!"pure": case tok!"nothrow": case tok!"@": case tok!"ref": case tok!"extern": case tok!"align": return true; default: return false; } } static bool isMemberFunctionAttribute(IdType t) pure nothrow @nogc @safe { switch (t) { case tok!"const": case tok!"immutable": case tok!"inout": case tok!"shared": case tok!"@": case tok!"pure": case tok!"nothrow": case tok!"return": case tok!"scope": return true; default: return false; } } static bool isTypeCtor(IdType t) pure nothrow @nogc @safe { switch (t) { case tok!"const": case tok!"immutable": case tok!"inout": case tok!"shared": return true; default: return false; } } bool currentIsMemberFunctionAttribute() const { return moreTokens && isMemberFunctionAttribute(current.type); } ExpressionNode parseLeftAssocBinaryExpression(alias ExpressionType, alias ExpressionPartType, Operators ...)(ExpressionNode part = null) { ExpressionNode node; mixin ("node = part is null ? parse" ~ ExpressionPartType.stringof ~ "() : part;"); if (node is null) return null; while (currentIsOneOf(Operators)) { auto n = allocator.make!ExpressionType; n.line = current.line; n.column = current.column; static if (__traits(hasMember, ExpressionType, "operator")) n.operator = advance().type; else advance(); n.left = node; mixin (parseNodeQ!(`n.right`, ExpressionPartType.stringof)); node = n; } return node; } ListType parseCommaSeparatedRule(alias ListType, alias ItemType, bool setLineAndColumn = false)(bool allowTrailingComma = false) { auto node = allocator.make!ListType; static if (setLineAndColumn) { node.line = current.line; node.column = current.column; } StackBuffer items; while (moreTokens()) { if (!items.put(mixin("parse" ~ ItemType.stringof ~ "()"))) return null; if (currentIs(tok!",")) { advance(); if (allowTrailingComma && currentIsOneOf(tok!")", tok!"}", tok!"]")) break; else continue; } else break; } ownArray(node.items, items); return node; } void warn(lazy string message) { import std.stdio : stderr; if (suppressMessages > 0) return; ++warningCount; auto column = index < tokens.length ? tokens[index].column : 0; auto line = index < tokens.length ? tokens[index].line : 0; if (messageDg !is null) messageDg(fileName, line, column, message, false); else if (messageFunction_ !is null) messageFunction_(fileName, line, column, message, false); else stderr.writefln("%s(%d:%d)[warn]: %s", fileName, line, column, message); } void error(string message, bool shouldAdvance = true) { import std.stdio : stderr; if (suppressMessages == 0) { ++errorCount; auto column = index < tokens.length ? tokens[index].column : tokens[$ - 1].column; auto line = index < tokens.length ? tokens[index].line : tokens[$ - 1].line; if (messageDg !is null) messageDg(fileName, line, column, message, true); else if (messageFunction_ !is null) messageFunction_(fileName, line, column, message, true); else stderr.writefln("%s(%d:%d)[error]: %s", fileName, line, column, message); } else ++suppressedErrorCount; while (shouldAdvance && moreTokens()) { if (currentIsOneOf(tok!";", tok!"}", tok!")", tok!"]")) { advance(); break; } else advance(); } } void skip(alias O, alias C)() { assert (currentIs(O), current().text); advance(); int depth = 1; while (moreTokens()) { switch (tokens[index].type) { case C: advance(); depth--; if (depth <= 0) return; break; case O: depth++; advance(); break; default: advance(); break; } } } void skipBraces() pure nothrow @safe @nogc { skip!(tok!"{", tok!"}")(); } void skipParens() pure nothrow @safe @nogc { skip!(tok!"(", tok!")")(); } void skipBrackets() pure nothrow @safe @nogc { skip!(tok!"[", tok!"]")(); } const(Token)* peek() const pure nothrow @safe @nogc { return index + 1 < tokens.length ? &tokens[index + 1] : null; } const(Token)* peekPast(alias O, alias C)() const pure nothrow @safe @nogc { if (index >= tokens.length) return null; int depth = 1; size_t i = index; ++i; while (i < tokens.length) { if (tokens[i] == O) { ++depth; ++i; } else if (tokens[i] == C) { --depth; ++i; if (depth <= 0) break; } else ++i; } return i >= tokens.length ? null : depth == 0 ? &tokens[i] : null; } const(Token)* peekPastParens() const pure nothrow @safe @nogc { return peekPast!(tok!"(", tok!")")(); } const(Token)* peekPastBrackets() const pure nothrow @safe @nogc { return peekPast!(tok!"[", tok!"]")(); } const(Token)* peekPastBraces() const pure nothrow @safe @nogc { return peekPast!(tok!"{", tok!"}")(); } bool peekIs(IdType t) const pure nothrow @safe @nogc { return index + 1 < tokens.length && tokens[index + 1].type == t; } bool peekIsOneOf(IdType[] types...) const pure nothrow @safe @nogc { if (index + 1 >= tokens.length) return false; return canFind(types, tokens[index + 1].type); } /** * Returns a token of the specified type if it was the next token, otherwise * calls the error function and returns null. Advances the lexer by one token. */ const(Token)* expect(IdType type) { if (index < tokens.length && tokens[index].type == type) return &tokens[index++]; else { string tokenString = str(type) is null ? to!string(type) : str(type); immutable bool shouldNotAdvance = index < tokens.length && (tokens[index].type == tok!")" || tokens[index].type == tok!";" || tokens[index].type == tok!"}"); auto token = (index < tokens.length ? (tokens[index].text is null ? str(tokens[index].type) : tokens[index].text) : "EOF"); error("Expected `" ~ tokenString ~ "` instead of `" ~ token ~ "`", !shouldNotAdvance); return null; } } /** * Returns: the _current token */ Token current() const pure nothrow @safe @nogc @property { return tokens[index]; } /** * Returns: the _previous token */ Token previous() const pure nothrow @safe @nogc @property { return tokens[index - 1]; } /** * Advances to the next token and returns the current token */ Token advance() pure nothrow @nogc @safe { return tokens[index++]; } /** * Returns: true if the current token has the given type */ bool currentIs(IdType type) const pure nothrow @safe @nogc { return index < tokens.length && tokens[index] == type; } /** * Returns: true if the current token is one of the given types */ bool currentIsOneOf(IdType[] types...) const pure nothrow @safe @nogc { if (index >= tokens.length) return false; return canFind(types, current.type); } bool startsWith(IdType[] types...) const pure nothrow @safe @nogc { if (index + types.length >= tokens.length) return false; for (size_t i = 0; (i < types.length) && ((index + i) < tokens.length); ++i) { if (tokens[index + i].type != types[i]) return false; } return true; } alias Bookmark = size_t; Bookmark setBookmark() pure nothrow @safe @nogc { // mixin(traceEnterAndExit!(__FUNCTION__)); ++suppressMessages; return index; } void abandonBookmark(Bookmark) pure nothrow @safe @nogc { --suppressMessages; if (suppressMessages == 0) suppressedErrorCount = 0; } void goToBookmark(Bookmark bookmark) pure nothrow @safe @nogc { --suppressMessages; if (suppressMessages == 0) suppressedErrorCount = 0; index = bookmark; } template simpleParse(NodeType, parts ...) { static if (__traits(hasMember, NodeType, "comment")) enum nodeComm = "node.comment = comment;\n" ~ "comment = null;\n"; else enum nodeComm = ""; static if (__traits(hasMember, NodeType, "line")) enum nodeLine = "node.line = current().line;\n"; else enum nodeLine = ""; static if (__traits(hasMember, NodeType, "column")) enum nodeColumn = "node.column = current().column;\n"; else enum nodeColumn = ""; static if (__traits(hasMember, NodeType, "location")) enum nodeLoc = "node.location = current().index;\n"; else enum nodeLoc = ""; enum simpleParse = "auto node = allocator.make!" ~ NodeType.stringof ~ ";\n" ~ nodeComm ~ nodeLine ~ nodeColumn ~ nodeLoc ~ simpleParseItems!(parts) ~ "\nreturn node;\n"; } template simpleParseItems(items ...) { static if (items.length > 1) enum simpleParseItems = simpleParseItem!(items[0]) ~ "\n" ~ simpleParseItems!(items[1 .. $]); else static if (items.length == 1) enum simpleParseItems = simpleParseItem!(items[0]); else enum simpleParseItems = ""; } template simpleParseItem(alias item) { static if (is (typeof(item) == string)) enum simpleParseItem = "if ((node." ~ item[0 .. item.countUntil("|")] ~ " = " ~ item[item.countUntil("|") + 1 .. $] ~ "()) is null) { return null; }"; else enum simpleParseItem = "if (expect(" ~ item.stringof ~ ") is null) { return null; }"; } template traceEnterAndExit(string fun) { enum traceEnterAndExit = `version (dparse_verbose) { _traceDepth++; trace("` ~ `\033[01;32m` ~ fun ~ `\033[0m"); }` ~ `version (dparse_verbose) scope(exit) { trace("` ~ `\033[01;31m` ~ fun ~ `\033[0m"); _traceDepth--; }`; } version (dparse_verbose) { import std.stdio : stderr; void trace(string message) { if (suppressMessages > 0) return; auto depth = format("%4d ", _traceDepth); if (index < tokens.length) stderr.writeln(depth, message, "(", current.line, ":", current.column, ")"); else stderr.writeln(depth, message, "(EOF:0)"); } } else { void trace(lazy string) {} } template parseNodeQ(string VarName, string NodeName) { enum parseNodeQ = `{ if ((` ~ VarName ~ ` = parse` ~ NodeName ~ `()) is null) return null; }`; } template nullCheck(string exp) { enum nullCheck = "{if ((" ~ exp ~ ") is null) { return null; }}"; } template tokenCheck(string Tok) { enum tokenCheck = `{ if (expect(tok!"` ~ Tok ~ `") is null) { return null; } }`; } template tokenCheck(string Exp, string Tok) { enum tokenCheck = `{auto t = expect(tok!"` ~ Tok ~ `");` ~ `if (t is null) { return null;}` ~ `else {` ~ Exp ~ ` = *t; }}`; } T attachCommentFromSemicolon(T)(T node) { auto semicolon = expect(tok!";"); if (semicolon is null) return null; if (semicolon.trailingComment !is null) { if (node.comment is null) node.comment = semicolon.trailingComment; else { node.comment ~= "\n"; node.comment ~= semicolon.trailingComment; } } return node; } // This list MUST BE MAINTAINED IN SORTED ORDER. static immutable string[] REGISTER_NAMES = [ "AH", "AL", "AX", "BH", "BL", "BP", "BPL", "BX", "CH", "CL", "CR0", "CR2", "CR3", "CR4", "CS", "CX", "DH", "DI", "DIL", "DL", "DR0", "DR1", "DR2", "DR3", "DR6", "DR7", "DS", "DX", "EAX", "EBP", "EBX", "ECX", "EDI", "EDX", "ES", "ESI", "ESP", "FS", "GS", "MM0", "MM1", "MM2", "MM3", "MM4", "MM5", "MM6", "MM7", "R10", "R10B", "R10D", "R10W", "R11", "R11B", "R11D", "R11W", "R12", "R12B", "R12D", "R12W", "R13", "R13B", "R13D", "R13W", "R14", "R14B", "R14D", "R14W", "R15", "R15B", "R15D", "R15W", "R8", "R8B", "R8D", "R8W", "R9", "R9B", "R9D", "R9W", "RAX", "RBP", "RBX", "RCX", "RDI", "RDX", "RSI", "RSP", "SI", "SIL", "SP", "SPL", "SS", "ST", "TR3", "TR4", "TR5", "TR6", "TR7", "XMM0", "XMM1", "XMM10", "XMM11", "XMM12", "XMM13", "XMM14", "XMM15", "XMM2", "XMM3", "XMM4", "XMM5", "XMM6", "XMM7", "XMM8", "XMM9", "YMM0", "YMM1", "YMM10", "YMM11", "YMM12", "YMM13", "YMM14", "YMM15", "YMM2", "YMM3", "YMM4", "YMM5", "YMM6", "YMM7", "YMM8", "YMM9" ]; N parseStaticCtorDtorCommon(N)(N node) { node.line = current.line; node.column = current.column; mixin(tokenCheck!"this"); mixin(tokenCheck!"("); mixin(tokenCheck!")"); StackBuffer attributes; while (moreTokens() && !currentIsOneOf(tok!"{", tok!"in", tok!"out", tok!"do", tok!";") && current.text != "body") if (!attributes.put(parseMemberFunctionAttribute())) return null; ownArray(node.memberFunctionAttributes, attributes); if (currentIs(tok!";")) advance(); else mixin(parseNodeQ!(`node.functionBody`, `FunctionBody`)); return node; } N parseInterfaceOrClass(N)(N node) { auto ident = expect(tok!"identifier"); mixin (nullCheck!`ident`); node.name = *ident; node.comment = comment; comment = null; if (currentIs(tok!";")) goto emptyBody; if (currentIs(tok!"{")) goto structBody; if (currentIs(tok!"(")) { mixin(parseNodeQ!(`node.templateParameters`, `TemplateParameters`)); if (currentIs(tok!";")) goto emptyBody; constraint: if (currentIs(tok!"if")) mixin(parseNodeQ!(`node.constraint`, `Constraint`)); if (node.baseClassList !is null) { if (currentIs(tok!"{")) goto structBody; else if (currentIs(tok!";")) goto emptyBody; else { error("Struct body or `;` expected"); return null; } } if (currentIs(tok!":")) goto baseClassList; if (currentIs(tok!"if")) goto constraint; if (currentIs(tok!";")) goto emptyBody; } if (currentIs(tok!":")) { baseClassList: advance(); // : if ((node.baseClassList = parseBaseClassList()) is null) return null; if (currentIs(tok!"if")) goto constraint; } structBody: mixin(parseNodeQ!(`node.structBody`, `StructBody`)); return node; emptyBody: advance(); return node; } int suppressMessages; size_t index; int _traceDepth; string comment; bool[typeof(Token.index)] cachedAAChecks; }