Parser.h revision a60528cdac7deee3991c2b48af4df4f315e49e9d
15f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer//===--- Parser.h - C Language Parser ---------------------------*- C++ -*-===// 25f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer// 35f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer// The LLVM Compiler Infrastructure 45f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer// 50bc735ffcfb223c0186419547abaa5c84482663eChris Lattner// This file is distributed under the University of Illinois Open Source 60bc735ffcfb223c0186419547abaa5c84482663eChris Lattner// License. See LICENSE.TXT for details. 75f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer// 85f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer//===----------------------------------------------------------------------===// 95f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer// 105f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer// This file defines the Parser interface. 115f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer// 125f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer//===----------------------------------------------------------------------===// 135f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 145f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer#ifndef LLVM_CLANG_PARSE_PARSER_H 155f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer#define LLVM_CLANG_PARSE_PARSER_H 165f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 175f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer#include "clang/Lex/Preprocessor.h" 185f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer#include "clang/Parse/Action.h" 19eb83ecde1a822b1c38cd060a85a08c1ac9f82cf8Argyrios Kyrtzidis#include "clang/Parse/DeclSpec.h" 204cc18a4d5222e04bd568b1e3e4d86127dbbcdf3fArgyrios Kyrtzidis#include <stack> 215f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 225f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencernamespace clang { 23fcdd8fe26de3eee44927600bf1853e21bd90dd84Daniel Dunbar class AttributeList; 245f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer class DeclSpec; 255f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer class Declarator; 26e13594279a952537ac903325efff57e3edca79d9Chris Lattner class FieldDeclarator; 27fcdd8fe26de3eee44927600bf1853e21bd90dd84Daniel Dunbar class ObjCDeclSpec; 28fcdd8fe26de3eee44927600bf1853e21bd90dd84Daniel Dunbar class PragmaHandler; 295f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer class Scope; 303cbfe2c4159e0a219ae660d50625c013aa4afbd0Chris Lattner class DiagnosticBuilder; 315f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 325f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer/// Parser - This implements a parser for the C family of languages. After 335f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer/// parsing units of the grammar, productions are invoked to handle whatever has 345f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer/// been read. 355f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer/// 365f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencerclass Parser { 375f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer Preprocessor &PP; 385f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 3997d0205d16fef2a783e785459b5f30f6a9dfbcb9Eric Christopher /// Tok - The current token we are peeking ahead. All parsing methods assume 405f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// that this is valid. 41d217773f106856a11879ec79dc468efefaf2ee75Chris Lattner Token Tok; 425f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 435f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer unsigned short ParenCount, BracketCount, BraceCount; 445f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 455f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// Actions - These are the callbacks we invoke as we parse various constructs 465f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// in the file. This refers to the common base class between MinimalActions 475f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// and SemaActions for those uses that don't matter. 485f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer Action &Actions; 495f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 505f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer Scope *CurScope; 515f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer Diagnostic &Diags; 529e344c65b1e8b83e1d3ada507cf653526ff2c005Chris Lattner 539e344c65b1e8b83e1d3ada507cf653526ff2c005Chris Lattner /// ScopeCache - Cache scopes to reduce malloc traffic. 549e344c65b1e8b83e1d3ada507cf653526ff2c005Chris Lattner enum { ScopeCacheSize = 16 }; 559e344c65b1e8b83e1d3ada507cf653526ff2c005Chris Lattner unsigned NumCachedScopes; 569e344c65b1e8b83e1d3ada507cf653526ff2c005Chris Lattner Scope *ScopeCache[ScopeCacheSize]; 57662e8b5647adbb1bc9eeceece7b64600cfa87471Daniel Dunbar 58662e8b5647adbb1bc9eeceece7b64600cfa87471Daniel Dunbar /// Ident_super - IdentifierInfo for "super", to support fast 59662e8b5647adbb1bc9eeceece7b64600cfa87471Daniel Dunbar /// comparison. 60662e8b5647adbb1bc9eeceece7b64600cfa87471Daniel Dunbar IdentifierInfo *Ident_super; 61662e8b5647adbb1bc9eeceece7b64600cfa87471Daniel Dunbar 62fcdd8fe26de3eee44927600bf1853e21bd90dd84Daniel Dunbar PragmaHandler *PackHandler; 63fcdd8fe26de3eee44927600bf1853e21bd90dd84Daniel Dunbar 645f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencerpublic: 655f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer Parser(Preprocessor &PP, Action &Actions); 665f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer ~Parser(); 675f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 685f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer const LangOptions &getLang() const { return PP.getLangOptions(); } 695f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer TargetInfo &getTargetInfo() const { return PP.getTargetInfo(); } 705f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer Action &getActions() const { return Actions; } 715f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 725f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // Type forwarding. All of these are statically 'void*', but they may all be 735f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // different actual classes based on the actions in place. 745f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer typedef Action::ExprTy ExprTy; 755f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer typedef Action::StmtTy StmtTy; 765f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer typedef Action::DeclTy DeclTy; 775f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer typedef Action::TypeTy TypeTy; 78f8268ae3196002bbab6adb830302e79b0f368f13Douglas Gregor typedef Action::BaseTy BaseTy; 797ad8390f7992ab7f19b1460c5f0b9d96f165c4e9Douglas Gregor typedef Action::MemInitTy MemInitTy; 80eb83ecde1a822b1c38cd060a85a08c1ac9f82cf8Argyrios Kyrtzidis typedef Action::CXXScopeTy CXXScopeTy; 81d6fb7ef028d9aa0b3e8943b7bc049c524437b407Douglas Gregor typedef Action::TemplateArgTy TemplateArgTy; 827ad8390f7992ab7f19b1460c5f0b9d96f165c4e9Douglas Gregor 83d6fb7ef028d9aa0b3e8943b7bc049c524437b407Douglas Gregor typedef Action::ExprResult ExprResult; 84d6fb7ef028d9aa0b3e8943b7bc049c524437b407Douglas Gregor typedef Action::StmtResult StmtResult; 85d6fb7ef028d9aa0b3e8943b7bc049c524437b407Douglas Gregor typedef Action::BaseResult BaseResult; 86d6fb7ef028d9aa0b3e8943b7bc049c524437b407Douglas Gregor typedef Action::MemInitResult MemInitResult; 8715faa7fdfb496489dec9470aa5eb699b29ecdaccSebastian Redl 8815faa7fdfb496489dec9470aa5eb699b29ecdaccSebastian Redl typedef Action::OwningExprResult OwningExprResult; 8915faa7fdfb496489dec9470aa5eb699b29ecdaccSebastian Redl typedef Action::OwningStmtResult OwningStmtResult; 90d6fb7ef028d9aa0b3e8943b7bc049c524437b407Douglas Gregor typedef Action::OwningTemplateArgResult OwningTemplateArgResult; 9115faa7fdfb496489dec9470aa5eb699b29ecdaccSebastian Redl 921d922960e083906a586609ac6978678147250177Sebastian Redl typedef Action::ExprArg ExprArg; 93a60528cdac7deee3991c2b48af4df4f315e49e9dSebastian Redl typedef Action::MultiStmtArg MultiStmtArg; 941d922960e083906a586609ac6978678147250177Sebastian Redl 9561364dddc33383e62cfe3b841dbc0f471280d95bSebastian Redl /// Adorns a ExprResult with Actions to make it an OwningExprResult 9661364dddc33383e62cfe3b841dbc0f471280d95bSebastian Redl OwningExprResult Owned(ExprResult res) { 9761364dddc33383e62cfe3b841dbc0f471280d95bSebastian Redl return OwningExprResult(Actions, res); 9861364dddc33383e62cfe3b841dbc0f471280d95bSebastian Redl } 9961364dddc33383e62cfe3b841dbc0f471280d95bSebastian Redl /// Adorns a StmtResult with Actions to make it an OwningStmtResult 10061364dddc33383e62cfe3b841dbc0f471280d95bSebastian Redl OwningStmtResult Owned(StmtResult res) { 10161364dddc33383e62cfe3b841dbc0f471280d95bSebastian Redl return OwningStmtResult(Actions, res); 10261364dddc33383e62cfe3b841dbc0f471280d95bSebastian Redl } 10361364dddc33383e62cfe3b841dbc0f471280d95bSebastian Redl 10461364dddc33383e62cfe3b841dbc0f471280d95bSebastian Redl OwningExprResult ExprError() { return OwningExprResult(Actions, true); } 10561364dddc33383e62cfe3b841dbc0f471280d95bSebastian Redl OwningStmtResult StmtError() { return OwningStmtResult(Actions, true); } 106d6fb7ef028d9aa0b3e8943b7bc049c524437b407Douglas Gregor OwningTemplateArgResult TemplateArgError() { 107d6fb7ef028d9aa0b3e8943b7bc049c524437b407Douglas Gregor return OwningTemplateArgResult(Actions, true); 108d6fb7ef028d9aa0b3e8943b7bc049c524437b407Douglas Gregor } 109d6fb7ef028d9aa0b3e8943b7bc049c524437b407Douglas Gregor 1102f7ece7c77eb17e24e8f0f4e1b7fb01aa5111f96Sebastian Redl OwningExprResult ExprError(const DiagnosticBuilder &) { return ExprError(); } 1112f7ece7c77eb17e24e8f0f4e1b7fb01aa5111f96Sebastian Redl OwningStmtResult StmtError(const DiagnosticBuilder &) { return StmtError(); } 112d6fb7ef028d9aa0b3e8943b7bc049c524437b407Douglas Gregor OwningTemplateArgResult TemplateArgError(const DiagnosticBuilder &) { 113d6fb7ef028d9aa0b3e8943b7bc049c524437b407Douglas Gregor return TemplateArgError(); 114d6fb7ef028d9aa0b3e8943b7bc049c524437b407Douglas Gregor } 11561364dddc33383e62cfe3b841dbc0f471280d95bSebastian Redl 1165f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // Parsing methods. 1175f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 1185f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// ParseTranslationUnit - All in one method that initializes parses, and 1195f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// shuts down the parser. 1205f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer void ParseTranslationUnit(); 1215f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 1225f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// Initialize - Warm up the parser. 1235f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// 1245f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer void Initialize(); 1255f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 1261f6443255894429fba384de0d5b6389ef578a5e9Steve Naroff /// ParseTopLevelDecl - Parse one top-level declaration. Returns true if 1271f6443255894429fba384de0d5b6389ef578a5e9Steve Naroff /// the EOF was encountered. 12889307ffaf8acf4d6fdffd72b607ca4fbcfdffc9dSteve Naroff bool ParseTopLevelDecl(DeclTy*& Result); 1295f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 1305f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencerprivate: 1315f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer //===--------------------------------------------------------------------===// 1325f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // Low-Level token peeking and consumption methods. 1335f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // 1345f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 1355f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// isTokenParen - Return true if the cur token is '(' or ')'. 1365f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer bool isTokenParen() const { 1375f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer return Tok.getKind() == tok::l_paren || Tok.getKind() == tok::r_paren; 1385f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer } 1395f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// isTokenBracket - Return true if the cur token is '[' or ']'. 1405f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer bool isTokenBracket() const { 1415f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer return Tok.getKind() == tok::l_square || Tok.getKind() == tok::r_square; 1425f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer } 1435f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// isTokenBrace - Return true if the cur token is '{' or '}'. 1445f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer bool isTokenBrace() const { 1455f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer return Tok.getKind() == tok::l_brace || Tok.getKind() == tok::r_brace; 1465f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer } 1475f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 1485f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// isTokenStringLiteral - True if this token is a string-literal. 1495f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// 1505f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer bool isTokenStringLiteral() const { 1515f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer return Tok.getKind() == tok::string_literal || 1525f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer Tok.getKind() == tok::wide_string_literal; 1535f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer } 154eb83ecde1a822b1c38cd060a85a08c1ac9f82cf8Argyrios Kyrtzidis 1555f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// ConsumeToken - Consume the current 'peek token' and lex the next one. 156d6ecc5cf945ccdf2b931137e364a69cde59ab18bZhongxing Xu /// This does not work with all kinds of tokens: strings and specific other 1575f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// tokens must be consumed with custom methods below. This returns the 1585f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// location of the consumed token. 1595f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer SourceLocation ConsumeToken() { 1605f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer assert(!isTokenStringLiteral() && !isTokenParen() && !isTokenBracket() && 1615f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer !isTokenBrace() && 1625f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer "Should consume special tokens with Consume*Token"); 1635f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer SourceLocation L = Tok.getLocation(); 1645f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer PP.Lex(Tok); 1655f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer return L; 1665f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer } 1675f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 1685f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// ConsumeAnyToken - Dispatch to the right Consume* method based on the 1695f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// current token type. This should only be used in cases where the type of 1705f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// the token really isn't known, e.g. in error recovery. 1715f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer SourceLocation ConsumeAnyToken() { 1725f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer if (isTokenParen()) 1735f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer return ConsumeParen(); 1745f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer else if (isTokenBracket()) 1755f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer return ConsumeBracket(); 1765f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer else if (isTokenBrace()) 1775f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer return ConsumeBrace(); 178d62701bc5321049353017e9abf1963edd57646aaSteve Naroff else if (isTokenStringLiteral()) 179d62701bc5321049353017e9abf1963edd57646aaSteve Naroff return ConsumeStringToken(); 1805f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer else 1815f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer return ConsumeToken(); 1825f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer } 1835f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 1845f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// ConsumeParen - This consume method keeps the paren count up-to-date. 1855f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// 1865f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer SourceLocation ConsumeParen() { 1875f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer assert(isTokenParen() && "wrong consume method"); 1885f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer if (Tok.getKind() == tok::l_paren) 1895f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer ++ParenCount; 1905f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer else if (ParenCount) 1915f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer --ParenCount; // Don't let unbalanced )'s drive the count negative. 1925f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer SourceLocation L = Tok.getLocation(); 1935f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer PP.Lex(Tok); 1945f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer return L; 1955f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer } 1965f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 1975f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// ConsumeBracket - This consume method keeps the bracket count up-to-date. 1985f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// 1995f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer SourceLocation ConsumeBracket() { 2005f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer assert(isTokenBracket() && "wrong consume method"); 2015f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer if (Tok.getKind() == tok::l_square) 2025f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer ++BracketCount; 2035f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer else if (BracketCount) 2045f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer --BracketCount; // Don't let unbalanced ]'s drive the count negative. 2055f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 2065f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer SourceLocation L = Tok.getLocation(); 2075f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer PP.Lex(Tok); 2085f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer return L; 2095f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer } 2105f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 2115f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// ConsumeBrace - This consume method keeps the brace count up-to-date. 2125f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// 2135f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer SourceLocation ConsumeBrace() { 2145f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer assert(isTokenBrace() && "wrong consume method"); 2155f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer if (Tok.getKind() == tok::l_brace) 2165f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer ++BraceCount; 2175f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer else if (BraceCount) 2185f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer --BraceCount; // Don't let unbalanced }'s drive the count negative. 2195f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 2205f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer SourceLocation L = Tok.getLocation(); 2215f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer PP.Lex(Tok); 2225f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer return L; 2235f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer } 2245f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 2255f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// ConsumeStringToken - Consume the current 'peek token', lexing a new one 2265f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// and returning the token kind. This method is specific to strings, as it 2275f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// handles string literal concatenation, as per C99 5.1.1.2, translation 2285f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// phase #6. 2295f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer SourceLocation ConsumeStringToken() { 2305f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer assert(isTokenStringLiteral() && 2315f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer "Should only consume string literals with this method"); 2325f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer SourceLocation L = Tok.getLocation(); 2335f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer PP.Lex(Tok); 2345f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer return L; 2355f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer } 2365f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 2376b884508c3bc97cc9df9516adb92fbf88dd0a2e4Chris Lattner /// GetLookAheadToken - This peeks ahead N tokens and returns that token 2386b884508c3bc97cc9df9516adb92fbf88dd0a2e4Chris Lattner /// without consuming any tokens. LookAhead(0) returns 'Tok', LookAhead(1) 2396b884508c3bc97cc9df9516adb92fbf88dd0a2e4Chris Lattner /// returns the token after Tok, etc. 2406b884508c3bc97cc9df9516adb92fbf88dd0a2e4Chris Lattner /// 2416b884508c3bc97cc9df9516adb92fbf88dd0a2e4Chris Lattner /// Note that this differs from the Preprocessor's LookAhead method, because 2426b884508c3bc97cc9df9516adb92fbf88dd0a2e4Chris Lattner /// the Parser always has one token lexed that the preprocessor doesn't. 2436b884508c3bc97cc9df9516adb92fbf88dd0a2e4Chris Lattner /// 24403db1b31dd926409b7defc1c90b66549464652c0Argyrios Kyrtzidis const Token &GetLookAheadToken(unsigned N) { 2456b884508c3bc97cc9df9516adb92fbf88dd0a2e4Chris Lattner if (N == 0 || Tok.is(tok::eof)) return Tok; 2466b884508c3bc97cc9df9516adb92fbf88dd0a2e4Chris Lattner return PP.LookAhead(N-1); 2476b884508c3bc97cc9df9516adb92fbf88dd0a2e4Chris Lattner } 248f7da726f09a6b7c5b9f5308e9690cb015398e671Argyrios Kyrtzidis 249f7da726f09a6b7c5b9f5308e9690cb015398e671Argyrios Kyrtzidis /// NextToken - This peeks ahead one token and returns it without 250f7da726f09a6b7c5b9f5308e9690cb015398e671Argyrios Kyrtzidis /// consuming it. 251f7da726f09a6b7c5b9f5308e9690cb015398e671Argyrios Kyrtzidis const Token &NextToken() { 25203db1b31dd926409b7defc1c90b66549464652c0Argyrios Kyrtzidis return PP.LookAhead(0); 253f7da726f09a6b7c5b9f5308e9690cb015398e671Argyrios Kyrtzidis } 2545404a156be26de1c63ca9916187f970848bb4dbbArgyrios Kyrtzidis 255eb83ecde1a822b1c38cd060a85a08c1ac9f82cf8Argyrios Kyrtzidis /// TryAnnotateTypeOrScopeToken - If the current token position is on a 256eb83ecde1a822b1c38cd060a85a08c1ac9f82cf8Argyrios Kyrtzidis /// typename (possibly qualified in C++) or a C++ scope specifier not followed 257eb83ecde1a822b1c38cd060a85a08c1ac9f82cf8Argyrios Kyrtzidis /// by a typename, TryAnnotateTypeOrScopeToken will replace one or more tokens 258eb83ecde1a822b1c38cd060a85a08c1ac9f82cf8Argyrios Kyrtzidis /// with a single annotation token representing the typename or C++ scope 259eb83ecde1a822b1c38cd060a85a08c1ac9f82cf8Argyrios Kyrtzidis /// respectively. 260eb83ecde1a822b1c38cd060a85a08c1ac9f82cf8Argyrios Kyrtzidis /// This simplifies handling of C++ scope specifiers and allows efficient 261eb83ecde1a822b1c38cd060a85a08c1ac9f82cf8Argyrios Kyrtzidis /// backtracking without the need to re-parse and resolve nested-names and 262eb83ecde1a822b1c38cd060a85a08c1ac9f82cf8Argyrios Kyrtzidis /// typenames. 26344802cc435d5122701e4f1a9354381cff4b171c0Argyrios Kyrtzidis /// It will mainly be called when we expect to treat identifiers as typenames 26444802cc435d5122701e4f1a9354381cff4b171c0Argyrios Kyrtzidis /// (if they are typenames). For example, in C we do not expect identifiers 26544802cc435d5122701e4f1a9354381cff4b171c0Argyrios Kyrtzidis /// inside expressions to be treated as typenames so it will not be called 26644802cc435d5122701e4f1a9354381cff4b171c0Argyrios Kyrtzidis /// for expressions in C. 267eb83ecde1a822b1c38cd060a85a08c1ac9f82cf8Argyrios Kyrtzidis void TryAnnotateTypeOrScopeToken(); 268eb83ecde1a822b1c38cd060a85a08c1ac9f82cf8Argyrios Kyrtzidis 2694bdd91c09fd59e0c154d759288beff300e31e1d0Argyrios Kyrtzidis /// TryAnnotateCXXScopeToken - Like TryAnnotateTypeOrScopeToken but only 270eb83ecde1a822b1c38cd060a85a08c1ac9f82cf8Argyrios Kyrtzidis /// annotates C++ scope specifiers. 2714bdd91c09fd59e0c154d759288beff300e31e1d0Argyrios Kyrtzidis void TryAnnotateCXXScopeToken(); 272eb83ecde1a822b1c38cd060a85a08c1ac9f82cf8Argyrios Kyrtzidis 2735404a156be26de1c63ca9916187f970848bb4dbbArgyrios Kyrtzidis /// TentativeParsingAction - An object that is used as a kind of "tentative 2745404a156be26de1c63ca9916187f970848bb4dbbArgyrios Kyrtzidis /// parsing transaction". It gets instantiated to mark the token position and 2755404a156be26de1c63ca9916187f970848bb4dbbArgyrios Kyrtzidis /// after the token consumption is done, Commit() or Revert() is called to 2765404a156be26de1c63ca9916187f970848bb4dbbArgyrios Kyrtzidis /// either "commit the consumed tokens" or revert to the previously marked 2775404a156be26de1c63ca9916187f970848bb4dbbArgyrios Kyrtzidis /// token position. Example: 2785404a156be26de1c63ca9916187f970848bb4dbbArgyrios Kyrtzidis /// 2795404a156be26de1c63ca9916187f970848bb4dbbArgyrios Kyrtzidis /// TentativeParsingAction TPA; 2805404a156be26de1c63ca9916187f970848bb4dbbArgyrios Kyrtzidis /// ConsumeToken(); 2815404a156be26de1c63ca9916187f970848bb4dbbArgyrios Kyrtzidis /// .... 2825404a156be26de1c63ca9916187f970848bb4dbbArgyrios Kyrtzidis /// TPA.Revert(); 2835404a156be26de1c63ca9916187f970848bb4dbbArgyrios Kyrtzidis /// 2845404a156be26de1c63ca9916187f970848bb4dbbArgyrios Kyrtzidis class TentativeParsingAction { 2855404a156be26de1c63ca9916187f970848bb4dbbArgyrios Kyrtzidis Parser &P; 2865404a156be26de1c63ca9916187f970848bb4dbbArgyrios Kyrtzidis Token PrevTok; 2875404a156be26de1c63ca9916187f970848bb4dbbArgyrios Kyrtzidis bool isActive; 2885404a156be26de1c63ca9916187f970848bb4dbbArgyrios Kyrtzidis 2895404a156be26de1c63ca9916187f970848bb4dbbArgyrios Kyrtzidis public: 2905404a156be26de1c63ca9916187f970848bb4dbbArgyrios Kyrtzidis explicit TentativeParsingAction(Parser& p) : P(p) { 2915404a156be26de1c63ca9916187f970848bb4dbbArgyrios Kyrtzidis PrevTok = P.Tok; 2925404a156be26de1c63ca9916187f970848bb4dbbArgyrios Kyrtzidis P.PP.EnableBacktrackAtThisPos(); 2935404a156be26de1c63ca9916187f970848bb4dbbArgyrios Kyrtzidis isActive = true; 2945404a156be26de1c63ca9916187f970848bb4dbbArgyrios Kyrtzidis } 2955404a156be26de1c63ca9916187f970848bb4dbbArgyrios Kyrtzidis void Commit() { 2965404a156be26de1c63ca9916187f970848bb4dbbArgyrios Kyrtzidis assert(isActive && "Parsing action was finished!"); 2975404a156be26de1c63ca9916187f970848bb4dbbArgyrios Kyrtzidis P.PP.CommitBacktrackedTokens(); 2985404a156be26de1c63ca9916187f970848bb4dbbArgyrios Kyrtzidis isActive = false; 2995404a156be26de1c63ca9916187f970848bb4dbbArgyrios Kyrtzidis } 3005404a156be26de1c63ca9916187f970848bb4dbbArgyrios Kyrtzidis void Revert() { 3015404a156be26de1c63ca9916187f970848bb4dbbArgyrios Kyrtzidis assert(isActive && "Parsing action was finished!"); 3025404a156be26de1c63ca9916187f970848bb4dbbArgyrios Kyrtzidis P.PP.Backtrack(); 3035404a156be26de1c63ca9916187f970848bb4dbbArgyrios Kyrtzidis P.Tok = PrevTok; 3045404a156be26de1c63ca9916187f970848bb4dbbArgyrios Kyrtzidis isActive = false; 3055404a156be26de1c63ca9916187f970848bb4dbbArgyrios Kyrtzidis } 3065404a156be26de1c63ca9916187f970848bb4dbbArgyrios Kyrtzidis ~TentativeParsingAction() { 3075404a156be26de1c63ca9916187f970848bb4dbbArgyrios Kyrtzidis assert(!isActive && "Forgot to call Commit or Revert!"); 3085404a156be26de1c63ca9916187f970848bb4dbbArgyrios Kyrtzidis } 3095404a156be26de1c63ca9916187f970848bb4dbbArgyrios Kyrtzidis }; 3106b884508c3bc97cc9df9516adb92fbf88dd0a2e4Chris Lattner 3116b884508c3bc97cc9df9516adb92fbf88dd0a2e4Chris Lattner 3125f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// MatchRHSPunctuation - For punctuation with a LHS and RHS (e.g. '['/']'), 3135f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// this helper function matches and consumes the specified RHS token if 3145f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// present. If not present, it emits the specified diagnostic indicating 3155f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// that the parser failed to match the RHS of the token at LHSLoc. LHSName 3165f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// should be the name of the unmatched LHS token. This returns the location 3175f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// of the consumed token. 3185f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer SourceLocation MatchRHSPunctuation(tok::TokenKind RHSTok, 3195f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer SourceLocation LHSLoc); 3205f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 3215f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// ExpectAndConsume - The parser expects that 'ExpectedTok' is next in the 3225f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// input. If so, it is consumed and false is returned. 3235f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// 3245f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// If the input is malformed, this emits the specified diagnostic. Next, if 3255f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// SkipToTok is specified, it calls SkipUntil(SkipToTok). Finally, true is 3265f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// returned. 3275f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer bool ExpectAndConsume(tok::TokenKind ExpectedTok, unsigned Diag, 3285f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer const char *DiagMsg = "", 3295f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer tok::TokenKind SkipToTok = tok::unknown); 3305f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 3315f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer //===--------------------------------------------------------------------===// 3325f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // Scope manipulation 3335f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 3348935b8b49053122ddd3ab4cd59af0fe5eb9c23cfDouglas Gregor /// ParseScope - Introduces a new scope for parsing. The kind of 3358935b8b49053122ddd3ab4cd59af0fe5eb9c23cfDouglas Gregor /// scope is determined by ScopeFlags. Objects of this type should 3368935b8b49053122ddd3ab4cd59af0fe5eb9c23cfDouglas Gregor /// be created on the stack to coincide with the position where the 3378935b8b49053122ddd3ab4cd59af0fe5eb9c23cfDouglas Gregor /// parser enters the new scope, and this object's constructor will 3388935b8b49053122ddd3ab4cd59af0fe5eb9c23cfDouglas Gregor /// create that new scope. Similarly, once the object is destroyed 3398935b8b49053122ddd3ab4cd59af0fe5eb9c23cfDouglas Gregor /// the parser will exit the scope. 3408935b8b49053122ddd3ab4cd59af0fe5eb9c23cfDouglas Gregor class ParseScope { 3418935b8b49053122ddd3ab4cd59af0fe5eb9c23cfDouglas Gregor Parser *Self; 3428935b8b49053122ddd3ab4cd59af0fe5eb9c23cfDouglas Gregor ParseScope(const ParseScope&); // do not implement 3438935b8b49053122ddd3ab4cd59af0fe5eb9c23cfDouglas Gregor ParseScope& operator=(const ParseScope&); // do not implement 3448935b8b49053122ddd3ab4cd59af0fe5eb9c23cfDouglas Gregor 3458935b8b49053122ddd3ab4cd59af0fe5eb9c23cfDouglas Gregor public: 3468935b8b49053122ddd3ab4cd59af0fe5eb9c23cfDouglas Gregor // ParseScope - Construct a new object to manage a scope in the 3478935b8b49053122ddd3ab4cd59af0fe5eb9c23cfDouglas Gregor // parser Self where the new Scope is created with the flags 3488935b8b49053122ddd3ab4cd59af0fe5eb9c23cfDouglas Gregor // ScopeFlags, but only when ManageScope is true (the default). If 3498935b8b49053122ddd3ab4cd59af0fe5eb9c23cfDouglas Gregor // ManageScope is false, this object does nothing. 3508935b8b49053122ddd3ab4cd59af0fe5eb9c23cfDouglas Gregor ParseScope(Parser *Self, unsigned ScopeFlags, bool ManageScope = true) 3518935b8b49053122ddd3ab4cd59af0fe5eb9c23cfDouglas Gregor : Self(Self) { 3528935b8b49053122ddd3ab4cd59af0fe5eb9c23cfDouglas Gregor if (ManageScope) 3538935b8b49053122ddd3ab4cd59af0fe5eb9c23cfDouglas Gregor Self->EnterScope(ScopeFlags); 3548935b8b49053122ddd3ab4cd59af0fe5eb9c23cfDouglas Gregor else 3558935b8b49053122ddd3ab4cd59af0fe5eb9c23cfDouglas Gregor this->Self = 0; 3568935b8b49053122ddd3ab4cd59af0fe5eb9c23cfDouglas Gregor } 3578935b8b49053122ddd3ab4cd59af0fe5eb9c23cfDouglas Gregor 3588935b8b49053122ddd3ab4cd59af0fe5eb9c23cfDouglas Gregor // Exit - Exit the scope associated with this object now, rather 3598935b8b49053122ddd3ab4cd59af0fe5eb9c23cfDouglas Gregor // than waiting until the object is destroyed. 3608935b8b49053122ddd3ab4cd59af0fe5eb9c23cfDouglas Gregor void Exit() { 3618935b8b49053122ddd3ab4cd59af0fe5eb9c23cfDouglas Gregor if (Self) { 3628935b8b49053122ddd3ab4cd59af0fe5eb9c23cfDouglas Gregor Self->ExitScope(); 3638935b8b49053122ddd3ab4cd59af0fe5eb9c23cfDouglas Gregor Self = 0; 3648935b8b49053122ddd3ab4cd59af0fe5eb9c23cfDouglas Gregor } 3658935b8b49053122ddd3ab4cd59af0fe5eb9c23cfDouglas Gregor } 3668935b8b49053122ddd3ab4cd59af0fe5eb9c23cfDouglas Gregor 3678935b8b49053122ddd3ab4cd59af0fe5eb9c23cfDouglas Gregor ~ParseScope() { 3688935b8b49053122ddd3ab4cd59af0fe5eb9c23cfDouglas Gregor Exit(); 3698935b8b49053122ddd3ab4cd59af0fe5eb9c23cfDouglas Gregor } 3708935b8b49053122ddd3ab4cd59af0fe5eb9c23cfDouglas Gregor }; 3718935b8b49053122ddd3ab4cd59af0fe5eb9c23cfDouglas Gregor 3725f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// EnterScope - Start a new scope. 3735f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer void EnterScope(unsigned ScopeFlags); 3745f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 3755f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// ExitScope - Pop a scope off the scope stack. 3765f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer void ExitScope(); 3775f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 3785f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer //===--------------------------------------------------------------------===// 3795f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // Diagnostic Emission and Error recovery. 38015faa7fdfb496489dec9470aa5eb699b29ecdaccSebastian Redl 3813cbfe2c4159e0a219ae660d50625c013aa4afbd0Chris Lattner DiagnosticBuilder Diag(SourceLocation Loc, unsigned DiagID); 3823cbfe2c4159e0a219ae660d50625c013aa4afbd0Chris Lattner DiagnosticBuilder Diag(const Token &Tok, unsigned DiagID); 38315faa7fdfb496489dec9470aa5eb699b29ecdaccSebastian Redl 3845f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// SkipUntil - Read tokens until we get to the specified token, then consume 38582c7e6d8215567935d3d52741ccca9876a8ea461Steve Naroff /// it (unless DontConsume is true). Because we cannot guarantee that the 3865f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// token will ever occur, this skips to the next token, or to some likely 3875f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// good stopping point. If StopAtSemi is true, skipping will stop at a ';' 3885f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// character. 3895f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// 3905f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// If SkipUntil finds the specified token, it returns true, otherwise it 3915f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// returns false. 3925f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer bool SkipUntil(tok::TokenKind T, bool StopAtSemi = true, 3935f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer bool DontConsume = false) { 3945f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer return SkipUntil(&T, 1, StopAtSemi, DontConsume); 3955f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer } 3965f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer bool SkipUntil(tok::TokenKind T1, tok::TokenKind T2, bool StopAtSemi = true, 3975f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer bool DontConsume = false) { 3985f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer tok::TokenKind TokArray[] = {T1, T2}; 3995f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer return SkipUntil(TokArray, 2, StopAtSemi, DontConsume); 4005f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer } 4015f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer bool SkipUntil(const tok::TokenKind *Toks, unsigned NumToks, 4025f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer bool StopAtSemi = true, bool DontConsume = false); 4037ad8390f7992ab7f19b1460c5f0b9d96f165c4e9Douglas Gregor 4045f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer //===--------------------------------------------------------------------===// 4054cc18a4d5222e04bd568b1e3e4d86127dbbcdf3fArgyrios Kyrtzidis // Lexing and parsing of C++ inline methods. 4064cc18a4d5222e04bd568b1e3e4d86127dbbcdf3fArgyrios Kyrtzidis 4074cc18a4d5222e04bd568b1e3e4d86127dbbcdf3fArgyrios Kyrtzidis struct LexedMethod { 4084cc18a4d5222e04bd568b1e3e4d86127dbbcdf3fArgyrios Kyrtzidis Action::DeclTy *D; 40972b505b7904b3c9320a1312998800ba76e4f5841Douglas Gregor CachedTokens Toks; 4104cc18a4d5222e04bd568b1e3e4d86127dbbcdf3fArgyrios Kyrtzidis explicit LexedMethod(Action::DeclTy *MD) : D(MD) {} 4114cc18a4d5222e04bd568b1e3e4d86127dbbcdf3fArgyrios Kyrtzidis }; 4124cc18a4d5222e04bd568b1e3e4d86127dbbcdf3fArgyrios Kyrtzidis 41372b505b7904b3c9320a1312998800ba76e4f5841Douglas Gregor /// LateParsedDefaultArgument - Keeps track of a parameter that may 41472b505b7904b3c9320a1312998800ba76e4f5841Douglas Gregor /// have a default argument that cannot be parsed yet because it 41572b505b7904b3c9320a1312998800ba76e4f5841Douglas Gregor /// occurs within a member function declaration inside the class 41672b505b7904b3c9320a1312998800ba76e4f5841Douglas Gregor /// (C++ [class.mem]p2). 41772b505b7904b3c9320a1312998800ba76e4f5841Douglas Gregor struct LateParsedDefaultArgument { 41872b505b7904b3c9320a1312998800ba76e4f5841Douglas Gregor explicit LateParsedDefaultArgument(Action::DeclTy *P, 41972b505b7904b3c9320a1312998800ba76e4f5841Douglas Gregor CachedTokens *Toks = 0) 42072b505b7904b3c9320a1312998800ba76e4f5841Douglas Gregor : Param(P), Toks(Toks) { } 42172b505b7904b3c9320a1312998800ba76e4f5841Douglas Gregor 42272b505b7904b3c9320a1312998800ba76e4f5841Douglas Gregor /// Param - The parameter declaration for this parameter. 42372b505b7904b3c9320a1312998800ba76e4f5841Douglas Gregor Action::DeclTy *Param; 42472b505b7904b3c9320a1312998800ba76e4f5841Douglas Gregor 42572b505b7904b3c9320a1312998800ba76e4f5841Douglas Gregor /// Toks - The sequence of tokens that comprises the default 42672b505b7904b3c9320a1312998800ba76e4f5841Douglas Gregor /// argument expression, not including the '=' or the terminating 42772b505b7904b3c9320a1312998800ba76e4f5841Douglas Gregor /// ')' or ','. This will be NULL for parameters that have no 42872b505b7904b3c9320a1312998800ba76e4f5841Douglas Gregor /// default argument. 42972b505b7904b3c9320a1312998800ba76e4f5841Douglas Gregor CachedTokens *Toks; 43072b505b7904b3c9320a1312998800ba76e4f5841Douglas Gregor }; 43172b505b7904b3c9320a1312998800ba76e4f5841Douglas Gregor 43272b505b7904b3c9320a1312998800ba76e4f5841Douglas Gregor /// LateParsedMethodDeclaration - A method declaration inside a class that 43372b505b7904b3c9320a1312998800ba76e4f5841Douglas Gregor /// contains at least one entity whose parsing needs to be delayed 43472b505b7904b3c9320a1312998800ba76e4f5841Douglas Gregor /// until the class itself is completely-defined, such as a default 43572b505b7904b3c9320a1312998800ba76e4f5841Douglas Gregor /// argument (C++ [class.mem]p2). 43672b505b7904b3c9320a1312998800ba76e4f5841Douglas Gregor struct LateParsedMethodDeclaration { 43772b505b7904b3c9320a1312998800ba76e4f5841Douglas Gregor explicit LateParsedMethodDeclaration(Action::DeclTy *M) : Method(M) { } 43872b505b7904b3c9320a1312998800ba76e4f5841Douglas Gregor 43972b505b7904b3c9320a1312998800ba76e4f5841Douglas Gregor /// Method - The method declaration. 44072b505b7904b3c9320a1312998800ba76e4f5841Douglas Gregor Action::DeclTy *Method; 44172b505b7904b3c9320a1312998800ba76e4f5841Douglas Gregor 44272b505b7904b3c9320a1312998800ba76e4f5841Douglas Gregor /// DefaultArgs - Contains the parameters of the function and 44372b505b7904b3c9320a1312998800ba76e4f5841Douglas Gregor /// their default arguments. At least one of the parameters will 44472b505b7904b3c9320a1312998800ba76e4f5841Douglas Gregor /// have a default argument, but all of the parameters of the 44572b505b7904b3c9320a1312998800ba76e4f5841Douglas Gregor /// method will be stored so that they can be reintroduced into 44672b505b7904b3c9320a1312998800ba76e4f5841Douglas Gregor /// scope at the appropriate times. 44772b505b7904b3c9320a1312998800ba76e4f5841Douglas Gregor llvm::SmallVector<LateParsedDefaultArgument, 8> DefaultArgs; 44872b505b7904b3c9320a1312998800ba76e4f5841Douglas Gregor }; 44972b505b7904b3c9320a1312998800ba76e4f5841Douglas Gregor 45072b505b7904b3c9320a1312998800ba76e4f5841Douglas Gregor /// LateParsedMethodDecls - During parsing of a top (non-nested) C++ 45172b505b7904b3c9320a1312998800ba76e4f5841Douglas Gregor /// class, its method declarations that contain parts that won't be 45272b505b7904b3c9320a1312998800ba76e4f5841Douglas Gregor /// parsed until after the definiton is completed (C++ [class.mem]p2), 45372b505b7904b3c9320a1312998800ba76e4f5841Douglas Gregor /// the method declarations will be stored here with the tokens that 45472b505b7904b3c9320a1312998800ba76e4f5841Douglas Gregor /// will be parsed to create those entities. 45572b505b7904b3c9320a1312998800ba76e4f5841Douglas Gregor typedef std::list<LateParsedMethodDeclaration> LateParsedMethodDecls; 45672b505b7904b3c9320a1312998800ba76e4f5841Douglas Gregor 4574cc18a4d5222e04bd568b1e3e4d86127dbbcdf3fArgyrios Kyrtzidis /// LexedMethodsForTopClass - During parsing of a top (non-nested) C++ class, 4584cc18a4d5222e04bd568b1e3e4d86127dbbcdf3fArgyrios Kyrtzidis /// its inline method definitions and the inline method definitions of its 4594cc18a4d5222e04bd568b1e3e4d86127dbbcdf3fArgyrios Kyrtzidis /// nested classes are lexed and stored here. 46072b505b7904b3c9320a1312998800ba76e4f5841Douglas Gregor typedef std::list<LexedMethod> LexedMethodsForTopClass; 46172b505b7904b3c9320a1312998800ba76e4f5841Douglas Gregor 46272b505b7904b3c9320a1312998800ba76e4f5841Douglas Gregor 46372b505b7904b3c9320a1312998800ba76e4f5841Douglas Gregor /// TopClass - Contains information about parts of the top 46472b505b7904b3c9320a1312998800ba76e4f5841Douglas Gregor /// (non-nested) C++ class that will need to be parsed after the 46572b505b7904b3c9320a1312998800ba76e4f5841Douglas Gregor /// class is fully defined. 46672b505b7904b3c9320a1312998800ba76e4f5841Douglas Gregor struct TopClass { 46772b505b7904b3c9320a1312998800ba76e4f5841Douglas Gregor /// MethodDecls - Method declarations that contain pieces whose 46872b505b7904b3c9320a1312998800ba76e4f5841Douglas Gregor /// parsing will be delayed until the class is fully defined. 46972b505b7904b3c9320a1312998800ba76e4f5841Douglas Gregor LateParsedMethodDecls MethodDecls; 47072b505b7904b3c9320a1312998800ba76e4f5841Douglas Gregor 47172b505b7904b3c9320a1312998800ba76e4f5841Douglas Gregor /// MethodDefs - Methods whose definitions will be parsed once the 47272b505b7904b3c9320a1312998800ba76e4f5841Douglas Gregor /// class has been fully defined. 47372b505b7904b3c9320a1312998800ba76e4f5841Douglas Gregor LexedMethodsForTopClass MethodDefs; 47472b505b7904b3c9320a1312998800ba76e4f5841Douglas Gregor }; 4754cc18a4d5222e04bd568b1e3e4d86127dbbcdf3fArgyrios Kyrtzidis 47672b505b7904b3c9320a1312998800ba76e4f5841Douglas Gregor /// TopClassStacks - This is initialized with one TopClass used 4774cc18a4d5222e04bd568b1e3e4d86127dbbcdf3fArgyrios Kyrtzidis /// for lexing all top classes, until a local class in an inline method is 47872b505b7904b3c9320a1312998800ba76e4f5841Douglas Gregor /// encountered, at which point a new TopClass is pushed here 4794cc18a4d5222e04bd568b1e3e4d86127dbbcdf3fArgyrios Kyrtzidis /// and used until the parsing of that local class is finished. 48072b505b7904b3c9320a1312998800ba76e4f5841Douglas Gregor std::stack<TopClass> TopClassStacks; 4814cc18a4d5222e04bd568b1e3e4d86127dbbcdf3fArgyrios Kyrtzidis 48272b505b7904b3c9320a1312998800ba76e4f5841Douglas Gregor TopClass &getCurTopClassStack() { 4834cc18a4d5222e04bd568b1e3e4d86127dbbcdf3fArgyrios Kyrtzidis assert(!TopClassStacks.empty() && "No lexed method stacks!"); 4844cc18a4d5222e04bd568b1e3e4d86127dbbcdf3fArgyrios Kyrtzidis return TopClassStacks.top(); 4854cc18a4d5222e04bd568b1e3e4d86127dbbcdf3fArgyrios Kyrtzidis } 4864cc18a4d5222e04bd568b1e3e4d86127dbbcdf3fArgyrios Kyrtzidis 4874cc18a4d5222e04bd568b1e3e4d86127dbbcdf3fArgyrios Kyrtzidis void PushTopClassStack() { 48872b505b7904b3c9320a1312998800ba76e4f5841Douglas Gregor TopClassStacks.push(TopClass()); 4894cc18a4d5222e04bd568b1e3e4d86127dbbcdf3fArgyrios Kyrtzidis } 4904cc18a4d5222e04bd568b1e3e4d86127dbbcdf3fArgyrios Kyrtzidis void PopTopClassStack() { TopClassStacks.pop(); } 4914cc18a4d5222e04bd568b1e3e4d86127dbbcdf3fArgyrios Kyrtzidis 4924cc18a4d5222e04bd568b1e3e4d86127dbbcdf3fArgyrios Kyrtzidis DeclTy *ParseCXXInlineMethodDef(AccessSpecifier AS, Declarator &D); 49372b505b7904b3c9320a1312998800ba76e4f5841Douglas Gregor void ParseLexedMethodDeclarations(); 4944cc18a4d5222e04bd568b1e3e4d86127dbbcdf3fArgyrios Kyrtzidis void ParseLexedMethodDefs(); 49572b505b7904b3c9320a1312998800ba76e4f5841Douglas Gregor bool ConsumeAndStoreUntil(tok::TokenKind T1, tok::TokenKind T2, 49672b505b7904b3c9320a1312998800ba76e4f5841Douglas Gregor CachedTokens &Toks, 49772b505b7904b3c9320a1312998800ba76e4f5841Douglas Gregor tok::TokenKind EarlyAbortIf = tok::unknown, 49872b505b7904b3c9320a1312998800ba76e4f5841Douglas Gregor bool ConsumeFinalToken = true); 4994cc18a4d5222e04bd568b1e3e4d86127dbbcdf3fArgyrios Kyrtzidis 5004cc18a4d5222e04bd568b1e3e4d86127dbbcdf3fArgyrios Kyrtzidis //===--------------------------------------------------------------------===// 5015f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // C99 6.9: External Definitions. 5025f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer DeclTy *ParseExternalDeclaration(); 5035f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer DeclTy *ParseDeclarationOrFunctionDefinition(); 5045f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer DeclTy *ParseFunctionDefinition(Declarator &D); 5055f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer void ParseKNRParamDeclarations(Declarator &D); 506effa8d1c97b00a3f53e972b0e61d9aade5ea1c57Sebastian Redl OwningExprResult ParseSimpleAsm(); 507effa8d1c97b00a3f53e972b0e61d9aade5ea1c57Sebastian Redl OwningExprResult ParseAsmStringLiteral(); 5085f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 5093536b443bc50d58a79f14fca9b6842541a434854Steve Naroff // Objective-C External Declarations 510dac269b65eed82182fc3e96566dedd6562dfe11eSteve Naroff DeclTy *ParseObjCAtDirectives(); 511dac269b65eed82182fc3e96566dedd6562dfe11eSteve Naroff DeclTy *ParseObjCAtClassDeclaration(SourceLocation atLoc); 512dac269b65eed82182fc3e96566dedd6562dfe11eSteve Naroff DeclTy *ParseObjCAtInterfaceDeclaration(SourceLocation atLoc, 513dac269b65eed82182fc3e96566dedd6562dfe11eSteve Naroff AttributeList *prefixAttrs = 0); 51460fcceeedbfc8b4a99cb942e2bc5aeb9e2f92a1fSteve Naroff void ParseObjCClassInstanceVariables(DeclTy *interfaceDecl, 51560fcceeedbfc8b4a99cb942e2bc5aeb9e2f92a1fSteve Naroff SourceLocation atLoc); 516e13b9595dc1e2f4288bec34f3412359f648e84a5Chris Lattner bool ParseObjCProtocolReferences(llvm::SmallVectorImpl<Action::DeclTy*> &P, 517e13b9595dc1e2f4288bec34f3412359f648e84a5Chris Lattner bool WarnOnDeclarations, 518e13b9595dc1e2f4288bec34f3412359f648e84a5Chris Lattner SourceLocation &EndProtoLoc); 51925e077d59a8e8e43b65882b69610a3d5e2aaf53cFariborz Jahanian void ParseObjCInterfaceDeclList(DeclTy *interfaceDecl, 520c81c8144a661a49d7b9dae8d2080dee2e43186ecChris Lattner tok::ObjCKeywordKind contextKey); 521246e70f69cb8aeb67225c54690f1c6b25abd5a86Daniel Dunbar DeclTy *ParseObjCAtProtocolDeclaration(SourceLocation atLoc, 522246e70f69cb8aeb67225c54690f1c6b25abd5a86Daniel Dunbar AttributeList *prefixAttrs = 0); 5233536b443bc50d58a79f14fca9b6842541a434854Steve Naroff 524a526c5c67e5a0473c340903ee542ce570119665fTed Kremenek DeclTy *ObjCImpDecl; 5250416fb9f379b49abb3eb0c1cb2ca75107e5a71d1Steve Naroff 526ac00b7f4a933e60e2f0afd83092339160adc140cFariborz Jahanian DeclTy *ParseObjCAtImplementationDeclaration(SourceLocation atLoc); 527ac00b7f4a933e60e2f0afd83092339160adc140cFariborz Jahanian DeclTy *ParseObjCAtEndDeclaration(SourceLocation atLoc); 528e992af01d14e2e31037562c123af0a71ae1ed374Fariborz Jahanian DeclTy *ParseObjCAtAliasDeclaration(SourceLocation atLoc); 529ac00b7f4a933e60e2f0afd83092339160adc140cFariborz Jahanian DeclTy *ParseObjCPropertySynthesize(SourceLocation atLoc); 530ac00b7f4a933e60e2f0afd83092339160adc140cFariborz Jahanian DeclTy *ParseObjCPropertyDynamic(SourceLocation atLoc); 5315f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 5324b6c9051c6522894978c9ba6a819a659d102db36Fariborz Jahanian IdentifierInfo *ParseObjCSelector(SourceLocation &MethodLocation); 53334870da70fa42b0391b79627ebd0cfc6eb22213bChris Lattner // Definitions for Objective-c context sensitive keywords recognition. 53434870da70fa42b0391b79627ebd0cfc6eb22213bChris Lattner enum ObjCTypeQual { 53534870da70fa42b0391b79627ebd0cfc6eb22213bChris Lattner objc_in=0, objc_out, objc_inout, objc_oneway, objc_bycopy, objc_byref, 53634870da70fa42b0391b79627ebd0cfc6eb22213bChris Lattner objc_NumQuals 53734870da70fa42b0391b79627ebd0cfc6eb22213bChris Lattner }; 538a526c5c67e5a0473c340903ee542ce570119665fTed Kremenek IdentifierInfo *ObjCTypeQuals[objc_NumQuals]; 5390196cab54007ff072ec2642da8911c6b7e8d3fb5Fariborz Jahanian 540335a2d4122e41343fe11a775889b8bec5b14be60Fariborz Jahanian bool isTokIdentifier_in() const; 541d0f97d1716a138a8d9e0df8e5af77334663723d8Fariborz Jahanian 542a526c5c67e5a0473c340903ee542ce570119665fTed Kremenek TypeTy *ParseObjCTypeName(ObjCDeclSpec &DS); 543294494e1cce92043562b4680c613df7fd028c02eSteve Naroff void ParseObjCMethodRequirement(); 54425e077d59a8e8e43b65882b69610a3d5e2aaf53cFariborz Jahanian DeclTy *ParseObjCMethodPrototype(DeclTy *classOrCat, 545c81c8144a661a49d7b9dae8d2080dee2e43186ecChris Lattner tok::ObjCKeywordKind MethodImplKind = tok::objc_not_keyword); 546bef1185418705e16012b3dd50cd7c260c8d6b79cSteve Naroff DeclTy *ParseObjCMethodDecl(SourceLocation mLoc, tok::TokenKind mType, 5471f7b6f88f18d7f6b10265acec5d41c4ed1897487Fariborz Jahanian DeclTy *classDecl, 54800933591a2795d09dd1acff12a2d21bce7cb12c5Fariborz Jahanian tok::ObjCKeywordKind MethodImplKind = tok::objc_not_keyword); 549a526c5c67e5a0473c340903ee542ce570119665fTed Kremenek void ParseObjCPropertyAttribute(ObjCDeclSpec &DS); 550294494e1cce92043562b4680c613df7fd028c02eSteve Naroff 55171c0a951d08dc7a2a057df8c15f22b36f6aa47c7Steve Naroff DeclTy *ParseObjCMethodDefinition(); 552bcfb06ac6da1aa3c74ac1ef7a49c2807522366e7Steve Naroff 5535f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer //===--------------------------------------------------------------------===// 5545f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // C99 6.5: Expressions. 5555f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 5562f7ece7c77eb17e24e8f0f4e1b7fb01aa5111f96Sebastian Redl OwningExprResult ParseExpression(); 5572f7ece7c77eb17e24e8f0f4e1b7fb01aa5111f96Sebastian Redl OwningExprResult ParseConstantExpression(); 5582f7ece7c77eb17e24e8f0f4e1b7fb01aa5111f96Sebastian Redl // Expr that doesn't include commas. 5592f7ece7c77eb17e24e8f0f4e1b7fb01aa5111f96Sebastian Redl OwningExprResult ParseAssignmentExpression(); 5602f7ece7c77eb17e24e8f0f4e1b7fb01aa5111f96Sebastian Redl 561d8c4e15138e69a51754cc259c8a592cc47950c8eSebastian Redl OwningExprResult ParseExpressionWithLeadingAt(SourceLocation AtLoc); 5625f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 563d8c4e15138e69a51754cc259c8a592cc47950c8eSebastian Redl OwningExprResult ParseRHSOfBinaryExpression(OwningExprResult LHS, 564d8c4e15138e69a51754cc259c8a592cc47950c8eSebastian Redl unsigned MinPrec); 5652f7ece7c77eb17e24e8f0f4e1b7fb01aa5111f96Sebastian Redl OwningExprResult ParseCastExpression(bool isUnaryExpression); 5662f7ece7c77eb17e24e8f0f4e1b7fb01aa5111f96Sebastian Redl OwningExprResult ParsePostfixExpressionSuffix(OwningExprResult LHS); 567d8c4e15138e69a51754cc259c8a592cc47950c8eSebastian Redl OwningExprResult ParseSizeofAlignofExpression(); 568d8c4e15138e69a51754cc259c8a592cc47950c8eSebastian Redl OwningExprResult ParseBuiltinPrimaryExpression(); 5690cd5b429fad6833dda23f0aced14a10907ac5539Argyrios Kyrtzidis 570a55e52c0802cae3b7c366a05c461d3d15074c1a3Sebastian Redl static const unsigned ExprListSize = 12; 571a55e52c0802cae3b7c366a05c461d3d15074c1a3Sebastian Redl typedef llvm::SmallVector<ExprTy*, ExprListSize> ExprListTy; 572a55e52c0802cae3b7c366a05c461d3d15074c1a3Sebastian Redl typedef llvm::SmallVector<SourceLocation, ExprListSize> CommaLocsTy; 5730cd5b429fad6833dda23f0aced14a10907ac5539Argyrios Kyrtzidis 5740cd5b429fad6833dda23f0aced14a10907ac5539Argyrios Kyrtzidis /// ParseExpressionList - Used for C/C++ (argument-)expression-list. 5750cd5b429fad6833dda23f0aced14a10907ac5539Argyrios Kyrtzidis bool ParseExpressionList(ExprListTy &Exprs, CommaLocsTy &CommaLocs); 576d8c4e15138e69a51754cc259c8a592cc47950c8eSebastian Redl 5775f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// ParenParseOption - Control what ParseParenExpression will parse. 5785f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer enum ParenParseOption { 5795f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer SimpleExpr, // Only parse '(' expression ')' 5805f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer CompoundStmt, // Also allow '(' compound-statement ')' 5815f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer CompoundLiteral, // Also allow '(' type-name ')' '{' ... '}' 5825f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer CastExpr // Also allow '(' type-name ')' <anything> 5835f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer }; 584d8c4e15138e69a51754cc259c8a592cc47950c8eSebastian Redl OwningExprResult ParseParenExpression(ParenParseOption &ExprType, 585d8c4e15138e69a51754cc259c8a592cc47950c8eSebastian Redl TypeTy *&CastTy, 586d8c4e15138e69a51754cc259c8a592cc47950c8eSebastian Redl SourceLocation &RParenLoc); 587d8c4e15138e69a51754cc259c8a592cc47950c8eSebastian Redl 588d8c4e15138e69a51754cc259c8a592cc47950c8eSebastian Redl OwningExprResult ParseSimpleParenExpression() { // Parse SimpleExpr only. 5895f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer SourceLocation RParenLoc; 5905f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer return ParseSimpleParenExpression(RParenLoc); 5915f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer } 592d8c4e15138e69a51754cc259c8a592cc47950c8eSebastian Redl OwningExprResult ParseSimpleParenExpression(SourceLocation &RParenLoc) { 5935f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer ParenParseOption Op = SimpleExpr; 5945f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer TypeTy *CastTy; 5955f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer return ParseParenExpression(Op, CastTy, RParenLoc); 5965f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer } 59715ff1110c96a26c9315142d407c1f29d86a5ad1fChris Lattner 59820df9b7ab9388b2a488c5b1293cd196b1e073b4eSebastian Redl OwningExprResult ParseStringLiteralExpression(); 599eb83ecde1a822b1c38cd060a85a08c1ac9f82cf8Argyrios Kyrtzidis 600eb83ecde1a822b1c38cd060a85a08c1ac9f82cf8Argyrios Kyrtzidis //===--------------------------------------------------------------------===// 601eb83ecde1a822b1c38cd060a85a08c1ac9f82cf8Argyrios Kyrtzidis // C++ Expressions 60220df9b7ab9388b2a488c5b1293cd196b1e073b4eSebastian Redl OwningExprResult ParseCXXIdExpression(); 6034bdd91c09fd59e0c154d759288beff300e31e1d0Argyrios Kyrtzidis 6044bdd91c09fd59e0c154d759288beff300e31e1d0Argyrios Kyrtzidis /// MaybeParseCXXScopeSpecifier - Parse global scope or nested-name-specifier. 6054bdd91c09fd59e0c154d759288beff300e31e1d0Argyrios Kyrtzidis /// Returns true if a nested-name-specifier was parsed from the token stream. 6064bdd91c09fd59e0c154d759288beff300e31e1d0Argyrios Kyrtzidis bool MaybeParseCXXScopeSpecifier(CXXScopeSpec &SS); 6075f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 6085f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer //===--------------------------------------------------------------------===// 6095f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // C++ 5.2p1: C++ Casts 61020df9b7ab9388b2a488c5b1293cd196b1e073b4eSebastian Redl OwningExprResult ParseCXXCasts(); 6115f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 6125f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer //===--------------------------------------------------------------------===// 613c42e1183846228a7fa5143ad76507d6d60f5c6f3Sebastian Redl // C++ 5.2p1: C++ Type Identification 61420df9b7ab9388b2a488c5b1293cd196b1e073b4eSebastian Redl OwningExprResult ParseCXXTypeid(); 615c42e1183846228a7fa5143ad76507d6d60f5c6f3Sebastian Redl 616c42e1183846228a7fa5143ad76507d6d60f5c6f3Sebastian Redl //===--------------------------------------------------------------------===// 6174cc18a4d5222e04bd568b1e3e4d86127dbbcdf3fArgyrios Kyrtzidis // C++ 9.3.2: C++ 'this' pointer 61820df9b7ab9388b2a488c5b1293cd196b1e073b4eSebastian Redl OwningExprResult ParseCXXThis(); 6194cc18a4d5222e04bd568b1e3e4d86127dbbcdf3fArgyrios Kyrtzidis 6204cc18a4d5222e04bd568b1e3e4d86127dbbcdf3fArgyrios Kyrtzidis //===--------------------------------------------------------------------===// 62150dd289f45738ed22b7583d52ed2525b927042ffChris Lattner // C++ 15: C++ Throw Expression 62220df9b7ab9388b2a488c5b1293cd196b1e073b4eSebastian Redl OwningExprResult ParseThrowExpression(); 6230fe7bea6fca9737c6c145aaa4a2ad3abe595782aDouglas Gregor bool ParseExceptionSpecification(); 62450dd289f45738ed22b7583d52ed2525b927042ffChris Lattner 62550dd289f45738ed22b7583d52ed2525b927042ffChris Lattner //===--------------------------------------------------------------------===// 6265f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // C++ 2.13.5: C++ Boolean Literals 62720df9b7ab9388b2a488c5b1293cd196b1e073b4eSebastian Redl OwningExprResult ParseCXXBoolLiteral(); 6285f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 6295f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer //===--------------------------------------------------------------------===// 630987a14bf5883ef6e5d07f1c83eb6d41a8212a78cArgyrios Kyrtzidis // C++ 5.2.3: Explicit type conversion (functional notation) 63120df9b7ab9388b2a488c5b1293cd196b1e073b4eSebastian Redl OwningExprResult ParseCXXTypeConstructExpression(const DeclSpec &DS); 632987a14bf5883ef6e5d07f1c83eb6d41a8212a78cArgyrios Kyrtzidis 633987a14bf5883ef6e5d07f1c83eb6d41a8212a78cArgyrios Kyrtzidis /// ParseCXXSimpleTypeSpecifier - [C++ 7.1.5.2] Simple type specifiers. 634987a14bf5883ef6e5d07f1c83eb6d41a8212a78cArgyrios Kyrtzidis /// This should only be called when the current token is known to be part of 635987a14bf5883ef6e5d07f1c83eb6d41a8212a78cArgyrios Kyrtzidis /// simple-type-specifier. 636987a14bf5883ef6e5d07f1c83eb6d41a8212a78cArgyrios Kyrtzidis void ParseCXXSimpleTypeSpecifier(DeclSpec &DS); 637987a14bf5883ef6e5d07f1c83eb6d41a8212a78cArgyrios Kyrtzidis 6382f1bc5285ccd40f411af5f5993f013e27e74ab78Douglas Gregor bool ParseCXXTypeSpecifierSeq(DeclSpec &DS); 6392f1bc5285ccd40f411af5f5993f013e27e74ab78Douglas Gregor 640987a14bf5883ef6e5d07f1c83eb6d41a8212a78cArgyrios Kyrtzidis //===--------------------------------------------------------------------===// 6414c5d320a7581f4b80b151630c91cea5727fa9923Sebastian Redl // C++ 5.3.4 and 5.3.5: C++ new and delete 64220df9b7ab9388b2a488c5b1293cd196b1e073b4eSebastian Redl OwningExprResult ParseCXXNewExpression(); 643cee63fbf0e64ac526582312bf8cf33263fc5c16eSebastian Redl bool ParseExpressionListOrTypeId(ExprListTy &Exprs, Declarator &D); 6444c5d320a7581f4b80b151630c91cea5727fa9923Sebastian Redl void ParseDirectNewDeclarator(Declarator &D); 64520df9b7ab9388b2a488c5b1293cd196b1e073b4eSebastian Redl OwningExprResult ParseCXXDeleteExpression(); 6464c5d320a7581f4b80b151630c91cea5727fa9923Sebastian Redl 6474c5d320a7581f4b80b151630c91cea5727fa9923Sebastian Redl //===--------------------------------------------------------------------===// 64871b914b999d9c4b6df11068fc5a3291ac4770492Argyrios Kyrtzidis // C++ if/switch/while/for condition expression. 6492f7ece7c77eb17e24e8f0f4e1b7fb01aa5111f96Sebastian Redl OwningExprResult ParseCXXCondition(); 65071b914b999d9c4b6df11068fc5a3291ac4770492Argyrios Kyrtzidis 65171b914b999d9c4b6df11068fc5a3291ac4770492Argyrios Kyrtzidis //===--------------------------------------------------------------------===// 65212e083c805c0f86be4f8e54b06e75b2c3dc1da64Douglas Gregor // C++ types 65312e083c805c0f86be4f8e54b06e75b2c3dc1da64Douglas Gregor 65412e083c805c0f86be4f8e54b06e75b2c3dc1da64Douglas Gregor //===--------------------------------------------------------------------===// 6555f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // C99 6.7.8: Initialization. 6560eec2b58678f71af6b5fcf4c439290c0d640546bChris Lattner 6570eec2b58678f71af6b5fcf4c439290c0d640546bChris Lattner /// ParseInitializer 6580eec2b58678f71af6b5fcf4c439290c0d640546bChris Lattner /// initializer: [C99 6.7.8] 6590eec2b58678f71af6b5fcf4c439290c0d640546bChris Lattner /// assignment-expression 6600eec2b58678f71af6b5fcf4c439290c0d640546bChris Lattner /// '{' ... 66120df9b7ab9388b2a488c5b1293cd196b1e073b4eSebastian Redl OwningExprResult ParseInitializer() { 6620eec2b58678f71af6b5fcf4c439290c0d640546bChris Lattner if (Tok.isNot(tok::l_brace)) 66320df9b7ab9388b2a488c5b1293cd196b1e073b4eSebastian Redl return ParseAssignmentExpression(); 6640eec2b58678f71af6b5fcf4c439290c0d640546bChris Lattner return ParseBraceInitializer(); 6650eec2b58678f71af6b5fcf4c439290c0d640546bChris Lattner } 66620df9b7ab9388b2a488c5b1293cd196b1e073b4eSebastian Redl OwningExprResult ParseBraceInitializer(); 66720df9b7ab9388b2a488c5b1293cd196b1e073b4eSebastian Redl OwningExprResult ParseInitializerWithPotentialDesignator( 66820df9b7ab9388b2a488c5b1293cd196b1e073b4eSebastian Redl InitListDesignations &D, unsigned InitNum); 6691d922960e083906a586609ac6978678147250177Sebastian Redl 6705f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer //===--------------------------------------------------------------------===// 671296e8d5fdcf9946f51e866adc8d281379e51efe9Steve Naroff // clang Expressions 6721d922960e083906a586609ac6978678147250177Sebastian Redl 6731d922960e083906a586609ac6978678147250177Sebastian Redl OwningExprResult ParseBlockLiteralExpression(); // ^{...} 674296e8d5fdcf9946f51e866adc8d281379e51efe9Steve Naroff 675296e8d5fdcf9946f51e866adc8d281379e51efe9Steve Naroff //===--------------------------------------------------------------------===// 6765508518a2702b00be3b15a26d772bde968972f54Anders Carlsson // Objective-C Expressions 67714dd98a7952c9559e0d17fff8272bf3be67135afChris Lattner 67814dd98a7952c9559e0d17fff8272bf3be67135afChris Lattner bool isTokObjCMessageIdentifierReceiver() const { 67914dd98a7952c9559e0d17fff8272bf3be67135afChris Lattner if (!Tok.is(tok::identifier)) 68014dd98a7952c9559e0d17fff8272bf3be67135afChris Lattner return false; 68114dd98a7952c9559e0d17fff8272bf3be67135afChris Lattner 68214dd98a7952c9559e0d17fff8272bf3be67135afChris Lattner if (Actions.isTypeName(*Tok.getIdentifierInfo(), CurScope)) 68314dd98a7952c9559e0d17fff8272bf3be67135afChris Lattner return true; 68414dd98a7952c9559e0d17fff8272bf3be67135afChris Lattner 685662e8b5647adbb1bc9eeceece7b64600cfa87471Daniel Dunbar return Tok.getIdentifierInfo() == Ident_super; 68614dd98a7952c9559e0d17fff8272bf3be67135afChris Lattner } 6871d922960e083906a586609ac6978678147250177Sebastian Redl 6881d922960e083906a586609ac6978678147250177Sebastian Redl OwningExprResult ParseObjCAtExpression(SourceLocation AtLocation); 6891d922960e083906a586609ac6978678147250177Sebastian Redl OwningExprResult ParseObjCStringLiteral(SourceLocation AtLoc); 6901d922960e083906a586609ac6978678147250177Sebastian Redl OwningExprResult ParseObjCEncodeExpression(SourceLocation AtLoc); 6911d922960e083906a586609ac6978678147250177Sebastian Redl OwningExprResult ParseObjCSelectorExpression(SourceLocation AtLoc); 6921d922960e083906a586609ac6978678147250177Sebastian Redl OwningExprResult ParseObjCProtocolExpression(SourceLocation AtLoc); 6931d922960e083906a586609ac6978678147250177Sebastian Redl OwningExprResult ParseObjCMessageExpression(); 6941d922960e083906a586609ac6978678147250177Sebastian Redl OwningExprResult ParseObjCMessageExpressionBody(SourceLocation LBracloc, 6951d922960e083906a586609ac6978678147250177Sebastian Redl SourceLocation NameLoc, 6961d922960e083906a586609ac6978678147250177Sebastian Redl IdentifierInfo *ReceiverName, 6971d922960e083906a586609ac6978678147250177Sebastian Redl ExprArg ReceiverExpr); 6981d922960e083906a586609ac6978678147250177Sebastian Redl OwningExprResult ParseAssignmentExprWithObjCMessageExprStart( 6991d922960e083906a586609ac6978678147250177Sebastian Redl SourceLocation LBracloc, SourceLocation NameLoc, 7001d922960e083906a586609ac6978678147250177Sebastian Redl IdentifierInfo *ReceiverName, ExprArg ReceiverExpr); 70161364dddc33383e62cfe3b841dbc0f471280d95bSebastian Redl 7025508518a2702b00be3b15a26d772bde968972f54Anders Carlsson //===--------------------------------------------------------------------===// 7035f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // C99 6.8: Statements and Blocks. 70461364dddc33383e62cfe3b841dbc0f471280d95bSebastian Redl 70561364dddc33383e62cfe3b841dbc0f471280d95bSebastian Redl OwningStmtResult ParseStatement() { 70661364dddc33383e62cfe3b841dbc0f471280d95bSebastian Redl return ParseStatementOrDeclaration(true); 70761364dddc33383e62cfe3b841dbc0f471280d95bSebastian Redl } 70861364dddc33383e62cfe3b841dbc0f471280d95bSebastian Redl OwningStmtResult ParseStatementOrDeclaration(bool OnlyStatement = false); 70961364dddc33383e62cfe3b841dbc0f471280d95bSebastian Redl OwningStmtResult ParseLabeledStatement(); 71061364dddc33383e62cfe3b841dbc0f471280d95bSebastian Redl OwningStmtResult ParseCaseStatement(); 71161364dddc33383e62cfe3b841dbc0f471280d95bSebastian Redl OwningStmtResult ParseDefaultStatement(); 71261364dddc33383e62cfe3b841dbc0f471280d95bSebastian Redl OwningStmtResult ParseCompoundStatement(bool isStmtExpr = false); 71361364dddc33383e62cfe3b841dbc0f471280d95bSebastian Redl OwningStmtResult ParseCompoundStatementBody(bool isStmtExpr = false); 714ff871fb8f9c5906a4dee78afd81f60c3837e16cbChris Lattner bool ParseParenExprOrCondition(OwningExprResult &CondExp, 715ff871fb8f9c5906a4dee78afd81f60c3837e16cbChris Lattner bool OnlyAllowCondition = false); 71661364dddc33383e62cfe3b841dbc0f471280d95bSebastian Redl OwningStmtResult ParseIfStatement(); 7179a920342707e384473b464528d2fd286e8c70353Sebastian Redl OwningStmtResult ParseSwitchStatement(); 7189a920342707e384473b464528d2fd286e8c70353Sebastian Redl OwningStmtResult ParseWhileStatement(); 7199a920342707e384473b464528d2fd286e8c70353Sebastian Redl OwningStmtResult ParseDoStatement(); 7209a920342707e384473b464528d2fd286e8c70353Sebastian Redl OwningStmtResult ParseForStatement(); 7219a920342707e384473b464528d2fd286e8c70353Sebastian Redl OwningStmtResult ParseGotoStatement(); 7229a920342707e384473b464528d2fd286e8c70353Sebastian Redl OwningStmtResult ParseContinueStatement(); 7239a920342707e384473b464528d2fd286e8c70353Sebastian Redl OwningStmtResult ParseBreakStatement(); 7249a920342707e384473b464528d2fd286e8c70353Sebastian Redl OwningStmtResult ParseReturnStatement(); 7259a920342707e384473b464528d2fd286e8c70353Sebastian Redl OwningStmtResult ParseAsmStatement(bool &msAsm); 7269a920342707e384473b464528d2fd286e8c70353Sebastian Redl OwningStmtResult FuzzyParseMicrosoftAsmStatement(); 72743bc2a0973ffe404fabba6f8280cd6bad2c69fcbSebastian Redl OwningStmtResult ParseObjCAtStatement(SourceLocation atLoc); 72843bc2a0973ffe404fabba6f8280cd6bad2c69fcbSebastian Redl OwningStmtResult ParseObjCTryStmt(SourceLocation atLoc); 72943bc2a0973ffe404fabba6f8280cd6bad2c69fcbSebastian Redl OwningStmtResult ParseObjCThrowStmt(SourceLocation atLoc); 73043bc2a0973ffe404fabba6f8280cd6bad2c69fcbSebastian Redl OwningStmtResult ParseObjCSynchronizedStmt(SourceLocation atLoc); 7318bd36fcb4427519f41197d88b9121e2bbe9e3fc3Anders Carlsson bool ParseAsmOperandsOpt(llvm::SmallVectorImpl<std::string> &Names, 732b235fc2cf37621c7fc6511bb2b8788c95f9fb9fcAnders Carlsson llvm::SmallVectorImpl<ExprTy*> &Constraints, 733b235fc2cf37621c7fc6511bb2b8788c95f9fb9fcAnders Carlsson llvm::SmallVectorImpl<ExprTy*> &Exprs); 734b235fc2cf37621c7fc6511bb2b8788c95f9fb9fcAnders Carlsson 7355f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 7365f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer //===--------------------------------------------------------------------===// 7375f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // C99 6.7: Declarations. 7385f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 7395f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer DeclTy *ParseDeclaration(unsigned Context); 7408f08cb7d0b97786b17ef05e05caa55aad4d6bd39Chris Lattner DeclTy *ParseSimpleDeclaration(unsigned Context); 7415f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer DeclTy *ParseInitDeclaratorListAfterFirstDeclarator(Declarator &D); 742f9ed3157c93495474003a5ec360039030fd42e9cFariborz Jahanian DeclTy *ParseFunctionStatementBody(DeclTy *Decl, 743f9ed3157c93495474003a5ec360039030fd42e9cFariborz Jahanian SourceLocation L, SourceLocation R); 7445f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer void ParseDeclarationSpecifiers(DeclSpec &DS); 74512e083c805c0f86be4f8e54b06e75b2c3dc1da64Douglas Gregor bool MaybeParseTypeSpecifier(DeclSpec &DS, int &isInvalid, 74612e083c805c0f86be4f8e54b06e75b2c3dc1da64Douglas Gregor const char *&PrevSpec); 7475f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer void ParseSpecifierQualifierList(DeclSpec &DS); 74819d74e1494fe399f0e2a94e9419c095f8214851bFariborz Jahanian 749a526c5c67e5a0473c340903ee542ce570119665fTed Kremenek void ParseObjCTypeQualifierList(ObjCDeclSpec &DS); 7505f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 7515f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer void ParseEnumSpecifier(DeclSpec &DS); 7525f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer void ParseEnumBody(SourceLocation StartLoc, DeclTy *TagDecl); 7535f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer void ParseStructUnionBody(SourceLocation StartLoc, unsigned TagType, 7545f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer DeclTy *TagDecl); 755e13594279a952537ac903325efff57e3edca79d9Chris Lattner void ParseStructDeclaration(DeclSpec &DS, 756e13594279a952537ac903325efff57e3edca79d9Chris Lattner llvm::SmallVectorImpl<FieldDeclarator> &Fields); 7574e6526b2de501f2bbc261fd8017c92c75bd8d8f7Steve Naroff 758eb83ecde1a822b1c38cd060a85a08c1ac9f82cf8Argyrios Kyrtzidis bool isDeclarationSpecifier(); 759eb83ecde1a822b1c38cd060a85a08c1ac9f82cf8Argyrios Kyrtzidis bool isTypeSpecifierQualifier(); 7605f8aa696619e32bf307232841fedb704ba733b4dSteve Naroff bool isTypeQualifier() const; 7615f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 7625404a156be26de1c63ca9916187f970848bb4dbbArgyrios Kyrtzidis /// isDeclarationStatement - Disambiguates between a declaration or an 7635404a156be26de1c63ca9916187f970848bb4dbbArgyrios Kyrtzidis /// expression statement, when parsing function bodies. 7645404a156be26de1c63ca9916187f970848bb4dbbArgyrios Kyrtzidis /// Returns true for declaration, false for expression. 7655404a156be26de1c63ca9916187f970848bb4dbbArgyrios Kyrtzidis bool isDeclarationStatement() { 7665404a156be26de1c63ca9916187f970848bb4dbbArgyrios Kyrtzidis if (getLang().CPlusPlus) 7675404a156be26de1c63ca9916187f970848bb4dbbArgyrios Kyrtzidis return isCXXDeclarationStatement(); 7685404a156be26de1c63ca9916187f970848bb4dbbArgyrios Kyrtzidis return isDeclarationSpecifier(); 7695404a156be26de1c63ca9916187f970848bb4dbbArgyrios Kyrtzidis } 7705404a156be26de1c63ca9916187f970848bb4dbbArgyrios Kyrtzidis 771bbc70c019f7b7f9a256ee29dab5287ecc82c6553Argyrios Kyrtzidis /// isSimpleDeclaration - Disambiguates between a declaration or an 772bbc70c019f7b7f9a256ee29dab5287ecc82c6553Argyrios Kyrtzidis /// expression, mainly used for the C 'clause-1' or the C++ 773bbc70c019f7b7f9a256ee29dab5287ecc82c6553Argyrios Kyrtzidis // 'for-init-statement' part of a 'for' statement. 774bbc70c019f7b7f9a256ee29dab5287ecc82c6553Argyrios Kyrtzidis /// Returns true for declaration, false for expression. 775bbc70c019f7b7f9a256ee29dab5287ecc82c6553Argyrios Kyrtzidis bool isSimpleDeclaration() { 776bbc70c019f7b7f9a256ee29dab5287ecc82c6553Argyrios Kyrtzidis if (getLang().CPlusPlus) 777bbc70c019f7b7f9a256ee29dab5287ecc82c6553Argyrios Kyrtzidis return isCXXSimpleDeclaration(); 778bbc70c019f7b7f9a256ee29dab5287ecc82c6553Argyrios Kyrtzidis return isDeclarationSpecifier(); 779bbc70c019f7b7f9a256ee29dab5287ecc82c6553Argyrios Kyrtzidis } 780bbc70c019f7b7f9a256ee29dab5287ecc82c6553Argyrios Kyrtzidis 78178c8d80f19cb0bccd4f3d590e71a230e727cfab5Argyrios Kyrtzidis /// isTypeIdInParens - Assumes that a '(' was parsed and now we want to know 78278c8d80f19cb0bccd4f3d590e71a230e727cfab5Argyrios Kyrtzidis /// whether the parens contain an expression or a type-id. 78378c8d80f19cb0bccd4f3d590e71a230e727cfab5Argyrios Kyrtzidis /// Returns true for a type-id and false for an expression. 78478c8d80f19cb0bccd4f3d590e71a230e727cfab5Argyrios Kyrtzidis bool isTypeIdInParens() { 78578c8d80f19cb0bccd4f3d590e71a230e727cfab5Argyrios Kyrtzidis if (getLang().CPlusPlus) 78678c8d80f19cb0bccd4f3d590e71a230e727cfab5Argyrios Kyrtzidis return isCXXTypeIdInParens(); 78778c8d80f19cb0bccd4f3d590e71a230e727cfab5Argyrios Kyrtzidis return isTypeSpecifierQualifier(); 78878c8d80f19cb0bccd4f3d590e71a230e727cfab5Argyrios Kyrtzidis } 78978c8d80f19cb0bccd4f3d590e71a230e727cfab5Argyrios Kyrtzidis 7905404a156be26de1c63ca9916187f970848bb4dbbArgyrios Kyrtzidis /// isCXXDeclarationStatement - C++-specialized function that disambiguates 7915404a156be26de1c63ca9916187f970848bb4dbbArgyrios Kyrtzidis /// between a declaration or an expression statement, when parsing function 7925404a156be26de1c63ca9916187f970848bb4dbbArgyrios Kyrtzidis /// bodies. Returns true for declaration, false for expression. 7935404a156be26de1c63ca9916187f970848bb4dbbArgyrios Kyrtzidis bool isCXXDeclarationStatement(); 7945404a156be26de1c63ca9916187f970848bb4dbbArgyrios Kyrtzidis 7955404a156be26de1c63ca9916187f970848bb4dbbArgyrios Kyrtzidis /// isCXXSimpleDeclaration - C++-specialized function that disambiguates 7965404a156be26de1c63ca9916187f970848bb4dbbArgyrios Kyrtzidis /// between a simple-declaration or an expression-statement. 7975404a156be26de1c63ca9916187f970848bb4dbbArgyrios Kyrtzidis /// If during the disambiguation process a parsing error is encountered, 7985404a156be26de1c63ca9916187f970848bb4dbbArgyrios Kyrtzidis /// the function returns true to let the declaration parsing code handle it. 7995404a156be26de1c63ca9916187f970848bb4dbbArgyrios Kyrtzidis /// Returns false if the statement is disambiguated as expression. 8005404a156be26de1c63ca9916187f970848bb4dbbArgyrios Kyrtzidis bool isCXXSimpleDeclaration(); 8015404a156be26de1c63ca9916187f970848bb4dbbArgyrios Kyrtzidis 8025404a156be26de1c63ca9916187f970848bb4dbbArgyrios Kyrtzidis /// isCXXFunctionDeclarator - Disambiguates between a function declarator or 8035404a156be26de1c63ca9916187f970848bb4dbbArgyrios Kyrtzidis /// a constructor-style initializer, when parsing declaration statements. 8045404a156be26de1c63ca9916187f970848bb4dbbArgyrios Kyrtzidis /// Returns true for function declarator and false for constructor-style 805e75d849d9141d8e47d05a91b7b5c04194854e47aArgyrios Kyrtzidis /// initializer. If 'warnIfAmbiguous' is true a warning will be emitted to 806259b0d91f2ff90d8daf39221fe133bf1596c5ffbArgyrios Kyrtzidis /// indicate that the parens were disambiguated as function declarator. 8075404a156be26de1c63ca9916187f970848bb4dbbArgyrios Kyrtzidis /// If during the disambiguation process a parsing error is encountered, 8085404a156be26de1c63ca9916187f970848bb4dbbArgyrios Kyrtzidis /// the function returns true to let the declaration parsing code handle it. 809e75d849d9141d8e47d05a91b7b5c04194854e47aArgyrios Kyrtzidis bool isCXXFunctionDeclarator(bool warnIfAmbiguous); 8105404a156be26de1c63ca9916187f970848bb4dbbArgyrios Kyrtzidis 811a8a4598b6f2a07339ab8a1248295a07d771a2b2aArgyrios Kyrtzidis /// isCXXConditionDeclaration - Disambiguates between a declaration or an 812a8a4598b6f2a07339ab8a1248295a07d771a2b2aArgyrios Kyrtzidis /// expression for a condition of a if/switch/while/for statement. 813a8a4598b6f2a07339ab8a1248295a07d771a2b2aArgyrios Kyrtzidis /// If during the disambiguation process a parsing error is encountered, 814a8a4598b6f2a07339ab8a1248295a07d771a2b2aArgyrios Kyrtzidis /// the function returns true to let the declaration parsing code handle it. 815a8a4598b6f2a07339ab8a1248295a07d771a2b2aArgyrios Kyrtzidis bool isCXXConditionDeclaration(); 816a8a4598b6f2a07339ab8a1248295a07d771a2b2aArgyrios Kyrtzidis 81778c8d80f19cb0bccd4f3d590e71a230e727cfab5Argyrios Kyrtzidis /// isCXXTypeIdInParens - Assumes that a '(' was parsed and now we want to 81878c8d80f19cb0bccd4f3d590e71a230e727cfab5Argyrios Kyrtzidis /// know whether the parens contain an expression or a type-id. 81978c8d80f19cb0bccd4f3d590e71a230e727cfab5Argyrios Kyrtzidis /// Returns true for a type-id and false for an expression. 82078c8d80f19cb0bccd4f3d590e71a230e727cfab5Argyrios Kyrtzidis /// If during the disambiguation process a parsing error is encountered, 82178c8d80f19cb0bccd4f3d590e71a230e727cfab5Argyrios Kyrtzidis /// the function returns true to let the declaration parsing code handle it. 82278c8d80f19cb0bccd4f3d590e71a230e727cfab5Argyrios Kyrtzidis bool isCXXTypeIdInParens(); 82378c8d80f19cb0bccd4f3d590e71a230e727cfab5Argyrios Kyrtzidis 824b9f341916e484ff6ba2c2d28c8b2dd5fa12b0015Argyrios Kyrtzidis /// TPResult - Used as the result value for functions whose purpose is to 825b9f341916e484ff6ba2c2d28c8b2dd5fa12b0015Argyrios Kyrtzidis /// disambiguate C++ constructs by "tentatively parsing" them. 826b9f341916e484ff6ba2c2d28c8b2dd5fa12b0015Argyrios Kyrtzidis /// This is a class instead of a simple enum because the implicit enum-to-bool 827b9f341916e484ff6ba2c2d28c8b2dd5fa12b0015Argyrios Kyrtzidis /// conversions may cause subtle bugs. 828b9f341916e484ff6ba2c2d28c8b2dd5fa12b0015Argyrios Kyrtzidis class TPResult { 829b9f341916e484ff6ba2c2d28c8b2dd5fa12b0015Argyrios Kyrtzidis enum Result { 830b9f341916e484ff6ba2c2d28c8b2dd5fa12b0015Argyrios Kyrtzidis TPR_true, 831b9f341916e484ff6ba2c2d28c8b2dd5fa12b0015Argyrios Kyrtzidis TPR_false, 832b9f341916e484ff6ba2c2d28c8b2dd5fa12b0015Argyrios Kyrtzidis TPR_ambiguous, 833b9f341916e484ff6ba2c2d28c8b2dd5fa12b0015Argyrios Kyrtzidis TPR_error 834b9f341916e484ff6ba2c2d28c8b2dd5fa12b0015Argyrios Kyrtzidis }; 835b9f341916e484ff6ba2c2d28c8b2dd5fa12b0015Argyrios Kyrtzidis Result Res; 836b9f341916e484ff6ba2c2d28c8b2dd5fa12b0015Argyrios Kyrtzidis TPResult(Result result) : Res(result) {} 837b9f341916e484ff6ba2c2d28c8b2dd5fa12b0015Argyrios Kyrtzidis public: 838b9f341916e484ff6ba2c2d28c8b2dd5fa12b0015Argyrios Kyrtzidis static TPResult True() { return TPR_true; } 839b9f341916e484ff6ba2c2d28c8b2dd5fa12b0015Argyrios Kyrtzidis static TPResult False() { return TPR_false; } 840b9f341916e484ff6ba2c2d28c8b2dd5fa12b0015Argyrios Kyrtzidis static TPResult Ambiguous() { return TPR_ambiguous; } 841b9f341916e484ff6ba2c2d28c8b2dd5fa12b0015Argyrios Kyrtzidis static TPResult Error() { return TPR_error; } 842b9f341916e484ff6ba2c2d28c8b2dd5fa12b0015Argyrios Kyrtzidis 843b9f341916e484ff6ba2c2d28c8b2dd5fa12b0015Argyrios Kyrtzidis bool operator==(const TPResult &RHS) const { return Res == RHS.Res; } 844b9f341916e484ff6ba2c2d28c8b2dd5fa12b0015Argyrios Kyrtzidis bool operator!=(const TPResult &RHS) const { return Res != RHS.Res; } 845b47e38683f288cd4a73098091d629df417377a6bArgyrios Kyrtzidis }; 846b47e38683f288cd4a73098091d629df417377a6bArgyrios Kyrtzidis 847b9f341916e484ff6ba2c2d28c8b2dd5fa12b0015Argyrios Kyrtzidis /// isCXXDeclarationSpecifier - Returns TPResult::True() if it is a 848b9f341916e484ff6ba2c2d28c8b2dd5fa12b0015Argyrios Kyrtzidis /// declaration specifier, TPResult::False() if it is not, 849b9f341916e484ff6ba2c2d28c8b2dd5fa12b0015Argyrios Kyrtzidis /// TPResult::Ambiguous() if it could be either a decl-specifier or a 850b9f341916e484ff6ba2c2d28c8b2dd5fa12b0015Argyrios Kyrtzidis /// function-style cast, and TPResult::Error() if a parsing error was 851b9f341916e484ff6ba2c2d28c8b2dd5fa12b0015Argyrios Kyrtzidis /// encountered. 8525404a156be26de1c63ca9916187f970848bb4dbbArgyrios Kyrtzidis /// Doesn't consume tokens. 853b9f341916e484ff6ba2c2d28c8b2dd5fa12b0015Argyrios Kyrtzidis TPResult isCXXDeclarationSpecifier(); 8545404a156be26de1c63ca9916187f970848bb4dbbArgyrios Kyrtzidis 8555404a156be26de1c63ca9916187f970848bb4dbbArgyrios Kyrtzidis // "Tentative parsing" functions, used for disambiguation. If a parsing error 856b9f341916e484ff6ba2c2d28c8b2dd5fa12b0015Argyrios Kyrtzidis // is encountered they will return TPResult::Error(). 857b9f341916e484ff6ba2c2d28c8b2dd5fa12b0015Argyrios Kyrtzidis // Returning TPResult::True()/False() indicates that the ambiguity was 858b9f341916e484ff6ba2c2d28c8b2dd5fa12b0015Argyrios Kyrtzidis // resolved and tentative parsing may stop. TPResult::Ambiguous() indicates 859b9f341916e484ff6ba2c2d28c8b2dd5fa12b0015Argyrios Kyrtzidis // that more tentative parsing is necessary for disambiguation. 8605404a156be26de1c63ca9916187f970848bb4dbbArgyrios Kyrtzidis // They all consume tokens, so backtracking should be used after calling them. 8615404a156be26de1c63ca9916187f970848bb4dbbArgyrios Kyrtzidis 862b9f341916e484ff6ba2c2d28c8b2dd5fa12b0015Argyrios Kyrtzidis TPResult TryParseDeclarationSpecifier(); 863b9f341916e484ff6ba2c2d28c8b2dd5fa12b0015Argyrios Kyrtzidis TPResult TryParseSimpleDeclaration(); 864b9f341916e484ff6ba2c2d28c8b2dd5fa12b0015Argyrios Kyrtzidis TPResult TryParseTypeofSpecifier(); 865b9f341916e484ff6ba2c2d28c8b2dd5fa12b0015Argyrios Kyrtzidis TPResult TryParseInitDeclaratorList(); 86678c8d80f19cb0bccd4f3d590e71a230e727cfab5Argyrios Kyrtzidis TPResult TryParseDeclarator(bool mayBeAbstract, bool mayHaveIdentifier=true); 867b9f341916e484ff6ba2c2d28c8b2dd5fa12b0015Argyrios Kyrtzidis TPResult TryParseParameterDeclarationClause(); 868b9f341916e484ff6ba2c2d28c8b2dd5fa12b0015Argyrios Kyrtzidis TPResult TryParseFunctionDeclarator(); 869b9f341916e484ff6ba2c2d28c8b2dd5fa12b0015Argyrios Kyrtzidis TPResult TryParseBracketDeclarator(); 8705404a156be26de1c63ca9916187f970848bb4dbbArgyrios Kyrtzidis 8715404a156be26de1c63ca9916187f970848bb4dbbArgyrios Kyrtzidis 872cee63fbf0e64ac526582312bf8cf33263fc5c16eSebastian Redl TypeTy *ParseTypeName(); 8735f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer AttributeList *ParseAttributes(); 874d1861fd633d5096a00777c918eb8575ea7162fe7Steve Naroff void ParseTypeofSpecifier(DeclSpec &DS); 875eb83ecde1a822b1c38cd060a85a08c1ac9f82cf8Argyrios Kyrtzidis 876eb83ecde1a822b1c38cd060a85a08c1ac9f82cf8Argyrios Kyrtzidis /// DeclaratorScopeObj - RAII object used in Parser::ParseDirectDeclarator to 877eb83ecde1a822b1c38cd060a85a08c1ac9f82cf8Argyrios Kyrtzidis /// enter a new C++ declarator scope and exit it when the function is 878eb83ecde1a822b1c38cd060a85a08c1ac9f82cf8Argyrios Kyrtzidis /// finished. 879eb83ecde1a822b1c38cd060a85a08c1ac9f82cf8Argyrios Kyrtzidis class DeclaratorScopeObj { 880eb83ecde1a822b1c38cd060a85a08c1ac9f82cf8Argyrios Kyrtzidis Parser &P; 881751810234ffb45327f23c5f9fda0b944e480bd2bArgyrios Kyrtzidis CXXScopeSpec &SS; 882eb83ecde1a822b1c38cd060a85a08c1ac9f82cf8Argyrios Kyrtzidis public: 883eb83ecde1a822b1c38cd060a85a08c1ac9f82cf8Argyrios Kyrtzidis DeclaratorScopeObj(Parser &p, CXXScopeSpec &ss) : P(p), SS(ss) {} 884eb83ecde1a822b1c38cd060a85a08c1ac9f82cf8Argyrios Kyrtzidis 885eb83ecde1a822b1c38cd060a85a08c1ac9f82cf8Argyrios Kyrtzidis void EnterDeclaratorScope() { 886eb83ecde1a822b1c38cd060a85a08c1ac9f82cf8Argyrios Kyrtzidis if (SS.isSet()) 887eb83ecde1a822b1c38cd060a85a08c1ac9f82cf8Argyrios Kyrtzidis P.Actions.ActOnCXXEnterDeclaratorScope(P.CurScope, SS); 888eb83ecde1a822b1c38cd060a85a08c1ac9f82cf8Argyrios Kyrtzidis } 889eb83ecde1a822b1c38cd060a85a08c1ac9f82cf8Argyrios Kyrtzidis 890eb83ecde1a822b1c38cd060a85a08c1ac9f82cf8Argyrios Kyrtzidis ~DeclaratorScopeObj() { 891eb83ecde1a822b1c38cd060a85a08c1ac9f82cf8Argyrios Kyrtzidis if (SS.isSet()) 8920a59acb9ae36077ce46fb2807956c5e84f0f6837Douglas Gregor P.Actions.ActOnCXXExitDeclaratorScope(P.CurScope, SS); 893eb83ecde1a822b1c38cd060a85a08c1ac9f82cf8Argyrios Kyrtzidis } 894eb83ecde1a822b1c38cd060a85a08c1ac9f82cf8Argyrios Kyrtzidis }; 8955f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 8965f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// ParseDeclarator - Parse and verify a newly-initialized declarator. 8975f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer void ParseDeclarator(Declarator &D); 8984c5d320a7581f4b80b151630c91cea5727fa9923Sebastian Redl /// A function that parses a variant of direct-declarator. 8994c5d320a7581f4b80b151630c91cea5727fa9923Sebastian Redl typedef void (Parser::*DirectDeclParseFunction)(Declarator&); 9004c5d320a7581f4b80b151630c91cea5727fa9923Sebastian Redl void ParseDeclaratorInternal(Declarator &D, 9014c5d320a7581f4b80b151630c91cea5727fa9923Sebastian Redl DirectDeclParseFunction DirectDeclParser); 90285b5a45803784a5465f69baf6f8d6e1eacaa5af5Chris Lattner void ParseTypeQualifierListOpt(DeclSpec &DS, bool AttributesAllowed = true); 9035f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer void ParseDirectDeclarator(Declarator &D); 9045f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer void ParseParenDeclarator(Declarator &D); 9057399ee0aa6ffaeab0a8f83408b1c5127fb2bf5b8Chris Lattner void ParseFunctionDeclarator(SourceLocation LParenLoc, Declarator &D, 9067399ee0aa6ffaeab0a8f83408b1c5127fb2bf5b8Chris Lattner AttributeList *AttrList = 0, 9077399ee0aa6ffaeab0a8f83408b1c5127fb2bf5b8Chris Lattner bool RequiresArg = false); 90866d28650752eeac0b02802a1d8cea425cb6b1c0fChris Lattner void ParseFunctionDeclaratorIdentifierList(SourceLocation LParenLoc, 90966d28650752eeac0b02802a1d8cea425cb6b1c0fChris Lattner Declarator &D); 9105f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer void ParseBracketDeclarator(Declarator &D); 9118f08cb7d0b97786b17ef05e05caa55aad4d6bd39Chris Lattner 9128f08cb7d0b97786b17ef05e05caa55aad4d6bd39Chris Lattner //===--------------------------------------------------------------------===// 9138f08cb7d0b97786b17ef05e05caa55aad4d6bd39Chris Lattner // C++ 7: Declarations [dcl.dcl] 9148f08cb7d0b97786b17ef05e05caa55aad4d6bd39Chris Lattner 9158f08cb7d0b97786b17ef05e05caa55aad4d6bd39Chris Lattner DeclTy *ParseNamespace(unsigned Context); 916c6fdc34ac0183bfa03d65f317c78b7bdac52897eChris Lattner DeclTy *ParseLinkage(unsigned Context); 9178f08cb7d0b97786b17ef05e05caa55aad4d6bd39Chris Lattner 918e37ac4ff1620ed2d7026f52baccbfa022d79ced1Douglas Gregor //===--------------------------------------------------------------------===// 919e37ac4ff1620ed2d7026f52baccbfa022d79ced1Douglas Gregor // C++ 9: classes [class] and C structs/unions. 920eb83ecde1a822b1c38cd060a85a08c1ac9f82cf8Argyrios Kyrtzidis TypeTy *ParseClassName(const CXXScopeSpec *SS = 0); 921e37ac4ff1620ed2d7026f52baccbfa022d79ced1Douglas Gregor void ParseClassSpecifier(DeclSpec &DS); 9224cc18a4d5222e04bd568b1e3e4d86127dbbcdf3fArgyrios Kyrtzidis void ParseCXXMemberSpecification(SourceLocation StartLoc, unsigned TagType, 9234cc18a4d5222e04bd568b1e3e4d86127dbbcdf3fArgyrios Kyrtzidis DeclTy *TagDecl); 9244cc18a4d5222e04bd568b1e3e4d86127dbbcdf3fArgyrios Kyrtzidis DeclTy *ParseCXXClassMemberDeclaration(AccessSpecifier AS); 9257ad8390f7992ab7f19b1460c5f0b9d96f165c4e9Douglas Gregor void ParseConstructorInitializer(DeclTy *ConstructorDecl); 9267ad8390f7992ab7f19b1460c5f0b9d96f165c4e9Douglas Gregor MemInitResult ParseMemInitializer(DeclTy *ConstructorDecl); 927e37ac4ff1620ed2d7026f52baccbfa022d79ced1Douglas Gregor 928e37ac4ff1620ed2d7026f52baccbfa022d79ced1Douglas Gregor //===--------------------------------------------------------------------===// 929e37ac4ff1620ed2d7026f52baccbfa022d79ced1Douglas Gregor // C++ 10: Derived classes [class.derived] 930e37ac4ff1620ed2d7026f52baccbfa022d79ced1Douglas Gregor void ParseBaseClause(DeclTy *ClassDecl); 931f8268ae3196002bbab6adb830302e79b0f368f13Douglas Gregor BaseResult ParseBaseSpecifier(DeclTy *ClassDecl); 9321b7f89846f10681ce3cbe89ef5d60691d55bd918Douglas Gregor AccessSpecifier getAccessSpecifierIfPresent() const; 9331cd1b1e987f5e2f060d7972b13d83239b36d77d6Douglas Gregor 9341cd1b1e987f5e2f060d7972b13d83239b36d77d6Douglas Gregor //===--------------------------------------------------------------------===// 9351cd1b1e987f5e2f060d7972b13d83239b36d77d6Douglas Gregor // C++ 13.5: Overloaded operators [over.oper] 936e94ca9e4371c022329270436b3dd77adc4ddfa8fDouglas Gregor OverloadedOperatorKind TryParseOperatorFunctionId(); 9372f1bc5285ccd40f411af5f5993f013e27e74ab78Douglas Gregor TypeTy *ParseConversionFunctionId(); 938adcac8824a9cff13f1ef61a69e38c1041cba12eeDouglas Gregor 939adcac8824a9cff13f1ef61a69e38c1041cba12eeDouglas Gregor //===--------------------------------------------------------------------===// 940adcac8824a9cff13f1ef61a69e38c1041cba12eeDouglas Gregor // C++ 14: Templates [temp] 941adcac8824a9cff13f1ef61a69e38c1041cba12eeDouglas Gregor // C++ 14.1: Template Parameters [temp.param] 942adcac8824a9cff13f1ef61a69e38c1041cba12eeDouglas Gregor DeclTy *ParseTemplateDeclaration(unsigned Context); 943adcac8824a9cff13f1ef61a69e38c1041cba12eeDouglas Gregor bool ParseTemplateParameters(DeclTy* TempDecl); 944adcac8824a9cff13f1ef61a69e38c1041cba12eeDouglas Gregor bool ParseTemplateParameterList(DeclTy *TmpDecl); 945adcac8824a9cff13f1ef61a69e38c1041cba12eeDouglas Gregor DeclTy *ParseTemplateParameter(); 946adcac8824a9cff13f1ef61a69e38c1041cba12eeDouglas Gregor DeclTy *ParseTypeParameter(); 947adcac8824a9cff13f1ef61a69e38c1041cba12eeDouglas Gregor DeclTy *ParseTemplateTemplateParameter(); 948adcac8824a9cff13f1ef61a69e38c1041cba12eeDouglas Gregor DeclTy *ParseNonTypeTemplateParameter(); 949d6fb7ef028d9aa0b3e8943b7bc049c524437b407Douglas Gregor // C++ 14.3: Template arguments [temp.arg] 950d6fb7ef028d9aa0b3e8943b7bc049c524437b407Douglas Gregor typedef llvm::SmallVector<TemplateArgTy*, 8> TemplateArgList; 951d6fb7ef028d9aa0b3e8943b7bc049c524437b407Douglas Gregor void AnnotateTemplateIdToken(DeclTy *Template, const CXXScopeSpec *SS = 0); 952d6fb7ef028d9aa0b3e8943b7bc049c524437b407Douglas Gregor bool ParseTemplateArgumentList(TemplateArgList &TemplateArgs); 953d6fb7ef028d9aa0b3e8943b7bc049c524437b407Douglas Gregor OwningTemplateArgResult ParseTemplateArgument(); 954d6fb7ef028d9aa0b3e8943b7bc049c524437b407Douglas Gregor 9555f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer}; 9565f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 9575f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer} // end namespace clang 9585f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 9595f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer#endif 960