/usr/include/clang/Parse/Parser.h is in libclang-dev 3.0-6ubuntu3.
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2022 2023 2024 2025 2026 2027 2028 2029 2030 2031 2032 2033 2034 2035 2036 2037 2038 2039 2040 2041 2042 2043 2044 2045 2046 2047 2048 2049 2050 2051 2052 2053 2054 2055 2056 2057 2058 2059 2060 2061 2062 2063 2064 2065 2066 2067 2068 2069 2070 2071 2072 2073 2074 2075 2076 2077 2078 2079 | //===--- Parser.h - C Language Parser ---------------------------*- C++ -*-===//
//
// The LLVM Compiler Infrastructure
//
// This file is distributed under the University of Illinois Open Source
// License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
//
// This file defines the Parser interface.
//
//===----------------------------------------------------------------------===//
#ifndef LLVM_CLANG_PARSE_PARSER_H
#define LLVM_CLANG_PARSE_PARSER_H
#include "clang/Basic/Specifiers.h"
#include "clang/Basic/DelayedCleanupPool.h"
#include "clang/Lex/Preprocessor.h"
#include "clang/Lex/CodeCompletionHandler.h"
#include "clang/Sema/Sema.h"
#include "clang/Sema/DeclSpec.h"
#include "llvm/Support/PrettyStackTrace.h"
#include "llvm/ADT/OwningPtr.h"
#include "llvm/ADT/SmallVector.h"
#include <stack>
namespace clang {
class PragmaHandler;
class Scope;
class DeclGroupRef;
class DiagnosticBuilder;
class Parser;
class PragmaUnusedHandler;
class ColonProtectionRAIIObject;
class InMessageExpressionRAIIObject;
class PoisonSEHIdentifiersRAIIObject;
class VersionTuple;
/// PrettyStackTraceParserEntry - If a crash happens while the parser is active,
/// an entry is printed for it.
class PrettyStackTraceParserEntry : public llvm::PrettyStackTraceEntry {
const Parser &P;
public:
PrettyStackTraceParserEntry(const Parser &p) : P(p) {}
virtual void print(raw_ostream &OS) const;
};
/// PrecedenceLevels - These are precedences for the binary/ternary
/// operators in the C99 grammar. These have been named to relate
/// with the C99 grammar productions. Low precedences numbers bind
/// more weakly than high numbers.
namespace prec {
enum Level {
Unknown = 0, // Not binary operator.
Comma = 1, // ,
Assignment = 2, // =, *=, /=, %=, +=, -=, <<=, >>=, &=, ^=, |=
Conditional = 3, // ?
LogicalOr = 4, // ||
LogicalAnd = 5, // &&
InclusiveOr = 6, // |
ExclusiveOr = 7, // ^
And = 8, // &
Equality = 9, // ==, !=
Relational = 10, // >=, <=, >, <
Shift = 11, // <<, >>
Additive = 12, // -, +
Multiplicative = 13, // *, /, %
PointerToMember = 14 // .*, ->*
};
}
/// Parser - This implements a parser for the C family of languages. After
/// parsing units of the grammar, productions are invoked to handle whatever has
/// been read.
///
class Parser : public CodeCompletionHandler {
friend class PragmaUnusedHandler;
friend class ColonProtectionRAIIObject;
friend class InMessageExpressionRAIIObject;
friend class PoisonSEHIdentifiersRAIIObject;
friend class ParenBraceBracketBalancer;
Preprocessor &PP;
/// Tok - The current token we are peeking ahead. All parsing methods assume
/// that this is valid.
Token Tok;
// PrevTokLocation - The location of the token we previously
// consumed. This token is used for diagnostics where we expected to
// see a token following another token (e.g., the ';' at the end of
// a statement).
SourceLocation PrevTokLocation;
unsigned short ParenCount, BracketCount, BraceCount;
/// Actions - These are the callbacks we invoke as we parse various constructs
/// in the file.
Sema &Actions;
DiagnosticsEngine &Diags;
/// ScopeCache - Cache scopes to reduce malloc traffic.
enum { ScopeCacheSize = 16 };
unsigned NumCachedScopes;
Scope *ScopeCache[ScopeCacheSize];
/// Identifiers used for SEH handling in Borland. These are only
/// allowed in particular circumstances
IdentifierInfo *Ident__exception_code, *Ident___exception_code, *Ident_GetExceptionCode; // __except block
IdentifierInfo *Ident__exception_info, *Ident___exception_info, *Ident_GetExceptionInfo; // __except filter expression
IdentifierInfo *Ident__abnormal_termination, *Ident___abnormal_termination, *Ident_AbnormalTermination; // __finally
/// Ident_super - IdentifierInfo for "super", to support fast
/// comparison.
IdentifierInfo *Ident_super;
/// Ident_vector and Ident_pixel - cached IdentifierInfo's for
/// "vector" and "pixel" fast comparison. Only present if
/// AltiVec enabled.
IdentifierInfo *Ident_vector;
IdentifierInfo *Ident_pixel;
/// Objective-C contextual keywords.
mutable IdentifierInfo *Ident_instancetype;
/// \brief Identifier for "introduced".
IdentifierInfo *Ident_introduced;
/// \brief Identifier for "deprecated".
IdentifierInfo *Ident_deprecated;
/// \brief Identifier for "obsoleted".
IdentifierInfo *Ident_obsoleted;
/// \brief Identifier for "unavailable".
IdentifierInfo *Ident_unavailable;
/// C++0x contextual keywords.
mutable IdentifierInfo *Ident_final;
mutable IdentifierInfo *Ident_override;
llvm::OwningPtr<PragmaHandler> AlignHandler;
llvm::OwningPtr<PragmaHandler> GCCVisibilityHandler;
llvm::OwningPtr<PragmaHandler> OptionsHandler;
llvm::OwningPtr<PragmaHandler> PackHandler;
llvm::OwningPtr<PragmaHandler> MSStructHandler;
llvm::OwningPtr<PragmaHandler> UnusedHandler;
llvm::OwningPtr<PragmaHandler> WeakHandler;
llvm::OwningPtr<PragmaHandler> FPContractHandler;
llvm::OwningPtr<PragmaHandler> OpenCLExtensionHandler;
/// Whether the '>' token acts as an operator or not. This will be
/// true except when we are parsing an expression within a C++
/// template argument list, where the '>' closes the template
/// argument list.
bool GreaterThanIsOperator;
/// ColonIsSacred - When this is false, we aggressively try to recover from
/// code like "foo : bar" as if it were a typo for "foo :: bar". This is not
/// safe in case statements and a few other things. This is managed by the
/// ColonProtectionRAIIObject RAII object.
bool ColonIsSacred;
/// \brief When true, we are directly inside an Objective-C messsage
/// send expression.
///
/// This is managed by the \c InMessageExpressionRAIIObject class, and
/// should not be set directly.
bool InMessageExpression;
/// The "depth" of the template parameters currently being parsed.
unsigned TemplateParameterDepth;
/// Factory object for creating AttributeList objects.
AttributeFactory AttrFactory;
/// \brief Gathers and cleans up objects when parsing of a top-level
/// declaration is finished.
DelayedCleanupPool TopLevelDeclCleanupPool;
public:
Parser(Preprocessor &PP, Sema &Actions);
~Parser();
const LangOptions &getLang() const { return PP.getLangOptions(); }
const TargetInfo &getTargetInfo() const { return PP.getTargetInfo(); }
Preprocessor &getPreprocessor() const { return PP; }
Sema &getActions() const { return Actions; }
const Token &getCurToken() const { return Tok; }
Scope *getCurScope() const { return Actions.getCurScope(); }
Decl *getObjCDeclContext() const { return Actions.getObjCDeclContext(); }
// Type forwarding. All of these are statically 'void*', but they may all be
// different actual classes based on the actions in place.
typedef OpaquePtr<DeclGroupRef> DeclGroupPtrTy;
typedef OpaquePtr<TemplateName> TemplateTy;
typedef SmallVector<TemplateParameterList *, 4> TemplateParameterLists;
typedef clang::ExprResult ExprResult;
typedef clang::StmtResult StmtResult;
typedef clang::BaseResult BaseResult;
typedef clang::MemInitResult MemInitResult;
typedef clang::TypeResult TypeResult;
typedef Expr *ExprArg;
typedef ASTMultiPtr<Stmt*> MultiStmtArg;
typedef Sema::FullExprArg FullExprArg;
/// Adorns a ExprResult with Actions to make it an ExprResult
ExprResult Owned(ExprResult res) {
return ExprResult(res);
}
/// Adorns a StmtResult with Actions to make it an StmtResult
StmtResult Owned(StmtResult res) {
return StmtResult(res);
}
ExprResult ExprError() { return ExprResult(true); }
StmtResult StmtError() { return StmtResult(true); }
ExprResult ExprError(const DiagnosticBuilder &) { return ExprError(); }
StmtResult StmtError(const DiagnosticBuilder &) { return StmtError(); }
ExprResult ExprEmpty() { return ExprResult(false); }
// Parsing methods.
/// ParseTranslationUnit - All in one method that initializes parses, and
/// shuts down the parser.
void ParseTranslationUnit();
/// Initialize - Warm up the parser.
///
void Initialize();
/// ParseTopLevelDecl - Parse one top-level declaration. Returns true if
/// the EOF was encountered.
bool ParseTopLevelDecl(DeclGroupPtrTy &Result);
DeclGroupPtrTy FinishPendingObjCActions();
private:
//===--------------------------------------------------------------------===//
// Low-Level token peeking and consumption methods.
//
/// isTokenParen - Return true if the cur token is '(' or ')'.
bool isTokenParen() const {
return Tok.getKind() == tok::l_paren || Tok.getKind() == tok::r_paren;
}
/// isTokenBracket - Return true if the cur token is '[' or ']'.
bool isTokenBracket() const {
return Tok.getKind() == tok::l_square || Tok.getKind() == tok::r_square;
}
/// isTokenBrace - Return true if the cur token is '{' or '}'.
bool isTokenBrace() const {
return Tok.getKind() == tok::l_brace || Tok.getKind() == tok::r_brace;
}
/// isTokenStringLiteral - True if this token is a string-literal.
///
bool isTokenStringLiteral() const {
return Tok.getKind() == tok::string_literal ||
Tok.getKind() == tok::wide_string_literal ||
Tok.getKind() == tok::utf8_string_literal ||
Tok.getKind() == tok::utf16_string_literal ||
Tok.getKind() == tok::utf32_string_literal;
}
/// \brief Returns true if the current token is a '=' or '==' and
/// false otherwise. If it's '==', we assume that it's a typo and we emit
/// DiagID and a fixit hint to turn '==' -> '='.
bool isTokenEqualOrMistypedEqualEqual(unsigned DiagID);
/// ConsumeToken - Consume the current 'peek token' and lex the next one.
/// This does not work with all kinds of tokens: strings and specific other
/// tokens must be consumed with custom methods below. This returns the
/// location of the consumed token.
SourceLocation ConsumeToken() {
assert(!isTokenStringLiteral() && !isTokenParen() && !isTokenBracket() &&
!isTokenBrace() &&
"Should consume special tokens with Consume*Token");
if (Tok.is(tok::code_completion))
return handleUnexpectedCodeCompletionToken();
PrevTokLocation = Tok.getLocation();
PP.Lex(Tok);
return PrevTokLocation;
}
/// ConsumeAnyToken - Dispatch to the right Consume* method based on the
/// current token type. This should only be used in cases where the type of
/// the token really isn't known, e.g. in error recovery.
SourceLocation ConsumeAnyToken() {
if (isTokenParen())
return ConsumeParen();
else if (isTokenBracket())
return ConsumeBracket();
else if (isTokenBrace())
return ConsumeBrace();
else if (isTokenStringLiteral())
return ConsumeStringToken();
else
return ConsumeToken();
}
/// ConsumeParen - This consume method keeps the paren count up-to-date.
///
SourceLocation ConsumeParen() {
assert(isTokenParen() && "wrong consume method");
if (Tok.getKind() == tok::l_paren)
++ParenCount;
else if (ParenCount)
--ParenCount; // Don't let unbalanced )'s drive the count negative.
PrevTokLocation = Tok.getLocation();
PP.Lex(Tok);
return PrevTokLocation;
}
/// ConsumeBracket - This consume method keeps the bracket count up-to-date.
///
SourceLocation ConsumeBracket() {
assert(isTokenBracket() && "wrong consume method");
if (Tok.getKind() == tok::l_square)
++BracketCount;
else if (BracketCount)
--BracketCount; // Don't let unbalanced ]'s drive the count negative.
PrevTokLocation = Tok.getLocation();
PP.Lex(Tok);
return PrevTokLocation;
}
/// ConsumeBrace - This consume method keeps the brace count up-to-date.
///
SourceLocation ConsumeBrace() {
assert(isTokenBrace() && "wrong consume method");
if (Tok.getKind() == tok::l_brace)
++BraceCount;
else if (BraceCount)
--BraceCount; // Don't let unbalanced }'s drive the count negative.
PrevTokLocation = Tok.getLocation();
PP.Lex(Tok);
return PrevTokLocation;
}
/// ConsumeStringToken - Consume the current 'peek token', lexing a new one
/// and returning the token kind. This method is specific to strings, as it
/// handles string literal concatenation, as per C99 5.1.1.2, translation
/// phase #6.
SourceLocation ConsumeStringToken() {
assert(isTokenStringLiteral() &&
"Should only consume string literals with this method");
PrevTokLocation = Tok.getLocation();
PP.Lex(Tok);
return PrevTokLocation;
}
/// \brief Consume the current code-completion token.
///
/// This routine should be called to consume the code-completion token once
/// a code-completion action has already been invoked.
SourceLocation ConsumeCodeCompletionToken() {
assert(Tok.is(tok::code_completion));
PrevTokLocation = Tok.getLocation();
PP.Lex(Tok);
return PrevTokLocation;
}
///\ brief When we are consuming a code-completion token without having
/// matched specific position in the grammar, provide code-completion results
/// based on context.
///
/// \returns the source location of the code-completion token.
SourceLocation handleUnexpectedCodeCompletionToken();
/// \brief Abruptly cut off parsing; mainly used when we have reached the
/// code-completion point.
void cutOffParsing() {
PP.setCodeCompletionReached();
// Cut off parsing by acting as if we reached the end-of-file.
Tok.setKind(tok::eof);
}
/// \brief Handle the annotation token produced for #pragma unused(...)
void HandlePragmaUnused();
/// GetLookAheadToken - This peeks ahead N tokens and returns that token
/// without consuming any tokens. LookAhead(0) returns 'Tok', LookAhead(1)
/// returns the token after Tok, etc.
///
/// Note that this differs from the Preprocessor's LookAhead method, because
/// the Parser always has one token lexed that the preprocessor doesn't.
///
const Token &GetLookAheadToken(unsigned N) {
if (N == 0 || Tok.is(tok::eof)) return Tok;
return PP.LookAhead(N-1);
}
/// NextToken - This peeks ahead one token and returns it without
/// consuming it.
const Token &NextToken() {
return PP.LookAhead(0);
}
/// \brief Tracks information about the current nesting depth of
/// opening delimiters of each kind.
class DelimiterTracker {
private:
friend class Parser;
unsigned Paren, Brace, Square, Less, LLLess;
unsigned& get(tok::TokenKind t) {
switch (t) {
default: llvm_unreachable("Unexpected balanced token");
case tok::l_brace: return Brace;
case tok::l_paren: return Paren;
case tok::l_square: return Square;
case tok::less: return Less;
case tok::lesslessless: return LLLess;
}
}
void push(tok::TokenKind t) {
get(t)++;
}
void pop(tok::TokenKind t) {
get(t)--;
}
unsigned getDepth(tok::TokenKind t) {
return get(t);
}
public:
DelimiterTracker() : Paren(0), Brace(0), Square(0), Less(0), LLLess(0) { }
};
/// \brief RAII class that helps handle the parsing of an open/close delimiter
/// pair, such as braces { ... } or parentheses ( ... ).
class BalancedDelimiterTracker {
tok::TokenKind Kind, Close;
Parser& P;
bool Cleanup;
const unsigned MaxDepth;
SourceLocation LOpen, LClose;
void assignClosingDelimiter() {
switch (Kind) {
default: llvm_unreachable("Unexpected balanced token");
case tok::l_brace: Close = tok::r_brace; break;
case tok::l_paren: Close = tok::r_paren; break;
case tok::l_square: Close = tok::r_square; break;
case tok::less: Close = tok::greater; break;
case tok::lesslessless: Close = tok::greatergreatergreater; break;
}
}
public:
BalancedDelimiterTracker(Parser& p, tok::TokenKind k)
: Kind(k), P(p), Cleanup(false), MaxDepth(256) {
assignClosingDelimiter();
}
~BalancedDelimiterTracker() {
if (Cleanup)
P.QuantityTracker.pop(Kind);
}
SourceLocation getOpenLocation() const { return LOpen; }
SourceLocation getCloseLocation() const { return LClose; }
SourceRange getRange() const { return SourceRange(LOpen, LClose); }
bool consumeOpen();
bool expectAndConsume(unsigned DiagID,
const char *Msg = "",
tok::TokenKind SkipToTok = tok::unknown);
bool consumeClose();
};
DelimiterTracker QuantityTracker;
/// getTypeAnnotation - Read a parsed type out of an annotation token.
static ParsedType getTypeAnnotation(Token &Tok) {
return ParsedType::getFromOpaquePtr(Tok.getAnnotationValue());
}
static void setTypeAnnotation(Token &Tok, ParsedType T) {
Tok.setAnnotationValue(T.getAsOpaquePtr());
}
/// \brief Read an already-translated primary expression out of an annotation
/// token.
static ExprResult getExprAnnotation(Token &Tok) {
if (Tok.getAnnotationValue())
return ExprResult((Expr *)Tok.getAnnotationValue());
return ExprResult(true);
}
/// \brief Set the primary expression corresponding to the given annotation
/// token.
static void setExprAnnotation(Token &Tok, ExprResult ER) {
if (ER.isInvalid())
Tok.setAnnotationValue(0);
else
Tok.setAnnotationValue(ER.get());
}
// If NeedType is true, then TryAnnotateTypeOrScopeToken will try harder to
// find a type name by attempting typo correction.
bool TryAnnotateTypeOrScopeToken(bool EnteringContext = false,
bool NeedType = false);
bool TryAnnotateCXXScopeToken(bool EnteringContext = false);
/// TryAltiVecToken - Check for context-sensitive AltiVec identifier tokens,
/// replacing them with the non-context-sensitive keywords. This returns
/// true if the token was replaced.
bool TryAltiVecToken(DeclSpec &DS, SourceLocation Loc,
const char *&PrevSpec, unsigned &DiagID,
bool &isInvalid) {
if (!getLang().AltiVec ||
(Tok.getIdentifierInfo() != Ident_vector &&
Tok.getIdentifierInfo() != Ident_pixel))
return false;
return TryAltiVecTokenOutOfLine(DS, Loc, PrevSpec, DiagID, isInvalid);
}
/// TryAltiVecVectorToken - Check for context-sensitive AltiVec vector
/// identifier token, replacing it with the non-context-sensitive __vector.
/// This returns true if the token was replaced.
bool TryAltiVecVectorToken() {
if (!getLang().AltiVec ||
Tok.getIdentifierInfo() != Ident_vector) return false;
return TryAltiVecVectorTokenOutOfLine();
}
bool TryAltiVecVectorTokenOutOfLine();
bool TryAltiVecTokenOutOfLine(DeclSpec &DS, SourceLocation Loc,
const char *&PrevSpec, unsigned &DiagID,
bool &isInvalid);
/// \brief Get the TemplateIdAnnotation from the token and put it in the
/// cleanup pool so that it gets destroyed when parsing the current top level
/// declaration is finished.
TemplateIdAnnotation *takeTemplateIdAnnotation(const Token &tok);
/// TentativeParsingAction - An object that is used as a kind of "tentative
/// parsing transaction". It gets instantiated to mark the token position and
/// after the token consumption is done, Commit() or Revert() is called to
/// either "commit the consumed tokens" or revert to the previously marked
/// token position. Example:
///
/// TentativeParsingAction TPA(*this);
/// ConsumeToken();
/// ....
/// TPA.Revert();
///
class TentativeParsingAction {
Parser &P;
Token PrevTok;
bool isActive;
public:
explicit TentativeParsingAction(Parser& p) : P(p) {
PrevTok = P.Tok;
P.PP.EnableBacktrackAtThisPos();
isActive = true;
}
void Commit() {
assert(isActive && "Parsing action was finished!");
P.PP.CommitBacktrackedTokens();
isActive = false;
}
void Revert() {
assert(isActive && "Parsing action was finished!");
P.PP.Backtrack();
P.Tok = PrevTok;
isActive = false;
}
~TentativeParsingAction() {
assert(!isActive && "Forgot to call Commit or Revert!");
}
};
/// ObjCDeclContextSwitch - An object used to switch context from
/// an objective-c decl context to its enclosing decl context and
/// back.
class ObjCDeclContextSwitch {
Parser &P;
Decl *DC;
public:
explicit ObjCDeclContextSwitch(Parser &p) : P(p),
DC(p.getObjCDeclContext()) {
if (DC)
P.Actions.ActOnObjCTemporaryExitContainerContext();
}
~ObjCDeclContextSwitch() {
if (DC)
P.Actions.ActOnObjCReenterContainerContext();
}
};
/// ExpectAndConsume - The parser expects that 'ExpectedTok' is next in the
/// input. If so, it is consumed and false is returned.
///
/// If the input is malformed, this emits the specified diagnostic. Next, if
/// SkipToTok is specified, it calls SkipUntil(SkipToTok). Finally, true is
/// returned.
bool ExpectAndConsume(tok::TokenKind ExpectedTok, unsigned Diag,
const char *DiagMsg = "",
tok::TokenKind SkipToTok = tok::unknown);
/// \brief The parser expects a semicolon and, if present, will consume it.
///
/// If the next token is not a semicolon, this emits the specified diagnostic,
/// or, if there's just some closing-delimiter noise (e.g., ')' or ']') prior
/// to the semicolon, consumes that extra token.
bool ExpectAndConsumeSemi(unsigned DiagID);
//===--------------------------------------------------------------------===//
// Scope manipulation
/// ParseScope - Introduces a new scope for parsing. The kind of
/// scope is determined by ScopeFlags. Objects of this type should
/// be created on the stack to coincide with the position where the
/// parser enters the new scope, and this object's constructor will
/// create that new scope. Similarly, once the object is destroyed
/// the parser will exit the scope.
class ParseScope {
Parser *Self;
ParseScope(const ParseScope&); // do not implement
ParseScope& operator=(const ParseScope&); // do not implement
public:
// ParseScope - Construct a new object to manage a scope in the
// parser Self where the new Scope is created with the flags
// ScopeFlags, but only when ManageScope is true (the default). If
// ManageScope is false, this object does nothing.
ParseScope(Parser *Self, unsigned ScopeFlags, bool ManageScope = true)
: Self(Self) {
if (ManageScope)
Self->EnterScope(ScopeFlags);
else
this->Self = 0;
}
// Exit - Exit the scope associated with this object now, rather
// than waiting until the object is destroyed.
void Exit() {
if (Self) {
Self->ExitScope();
Self = 0;
}
}
~ParseScope() {
Exit();
}
};
/// EnterScope - Start a new scope.
void EnterScope(unsigned ScopeFlags);
/// ExitScope - Pop a scope off the scope stack.
void ExitScope();
/// \brief RAII object used to modify the scope flags for the current scope.
class ParseScopeFlags {
Scope *CurScope;
unsigned OldFlags;
ParseScopeFlags(const ParseScopeFlags &); // do not implement
void operator=(const ParseScopeFlags &); // do not implement
public:
ParseScopeFlags(Parser *Self, unsigned ScopeFlags, bool ManageFlags = true);
~ParseScopeFlags();
};
//===--------------------------------------------------------------------===//
// Diagnostic Emission and Error recovery.
public:
DiagnosticBuilder Diag(SourceLocation Loc, unsigned DiagID);
DiagnosticBuilder Diag(const Token &Tok, unsigned DiagID);
private:
void SuggestParentheses(SourceLocation Loc, unsigned DK,
SourceRange ParenRange);
/// SkipUntil - Read tokens until we get to the specified token, then consume
/// it (unless DontConsume is true). Because we cannot guarantee that the
/// token will ever occur, this skips to the next token, or to some likely
/// good stopping point. If StopAtSemi is true, skipping will stop at a ';'
/// character.
///
/// If SkipUntil finds the specified token, it returns true, otherwise it
/// returns false.
bool SkipUntil(tok::TokenKind T, bool StopAtSemi = true,
bool DontConsume = false, bool StopAtCodeCompletion = false) {
return SkipUntil(&T, 1, StopAtSemi, DontConsume, StopAtCodeCompletion);
}
bool SkipUntil(tok::TokenKind T1, tok::TokenKind T2, bool StopAtSemi = true,
bool DontConsume = false, bool StopAtCodeCompletion = false) {
tok::TokenKind TokArray[] = {T1, T2};
return SkipUntil(TokArray, 2, StopAtSemi, DontConsume,StopAtCodeCompletion);
}
bool SkipUntil(const tok::TokenKind *Toks, unsigned NumToks,
bool StopAtSemi = true, bool DontConsume = false,
bool StopAtCodeCompletion = false);
//===--------------------------------------------------------------------===//
// Lexing and parsing of C++ inline methods.
struct ParsingClass;
/// [class.mem]p1: "... the class is regarded as complete within
/// - function bodies
/// - default arguments
/// - exception-specifications (TODO: C++0x)
/// - and brace-or-equal-initializers for non-static data members
/// (including such things in nested classes)."
/// LateParsedDeclarations build the tree of those elements so they can
/// be parsed after parsing the top-level class.
class LateParsedDeclaration {
public:
virtual ~LateParsedDeclaration();
virtual void ParseLexedMethodDeclarations();
virtual void ParseLexedMemberInitializers();
virtual void ParseLexedMethodDefs();
virtual void ParseLexedAttributes();
};
/// Inner node of the LateParsedDeclaration tree that parses
/// all its members recursively.
class LateParsedClass : public LateParsedDeclaration {
public:
LateParsedClass(Parser *P, ParsingClass *C);
virtual ~LateParsedClass();
virtual void ParseLexedMethodDeclarations();
virtual void ParseLexedMemberInitializers();
virtual void ParseLexedMethodDefs();
virtual void ParseLexedAttributes();
private:
Parser *Self;
ParsingClass *Class;
};
/// Contains the lexed tokens of an attribute with arguments that
/// may reference member variables and so need to be parsed at the
/// end of the class declaration after parsing all other member
/// member declarations.
/// FIXME: Perhaps we should change the name of LateParsedDeclaration to
/// LateParsedTokens.
struct LateParsedAttribute : public LateParsedDeclaration {
Parser *Self;
CachedTokens Toks;
IdentifierInfo &AttrName;
SourceLocation AttrNameLoc;
Decl *D;
explicit LateParsedAttribute(Parser *P, IdentifierInfo &Name,
SourceLocation Loc)
: Self(P), AttrName(Name), AttrNameLoc(Loc), D(0) {}
virtual void ParseLexedAttributes();
void setDecl(Decl *Dec) { D = Dec; }
};
/// A list of late parsed attributes. Used by ParseGNUAttributes.
typedef llvm::SmallVector<LateParsedAttribute*, 2> LateParsedAttrList;
/// Contains the lexed tokens of a member function definition
/// which needs to be parsed at the end of the class declaration
/// after parsing all other member declarations.
struct LexedMethod : public LateParsedDeclaration {
Parser *Self;
Decl *D;
CachedTokens Toks;
/// \brief Whether this member function had an associated template
/// scope. When true, D is a template declaration.
/// othewise, it is a member function declaration.
bool TemplateScope;
explicit LexedMethod(Parser* P, Decl *MD)
: Self(P), D(MD), TemplateScope(false) {}
virtual void ParseLexedMethodDefs();
};
/// LateParsedDefaultArgument - Keeps track of a parameter that may
/// have a default argument that cannot be parsed yet because it
/// occurs within a member function declaration inside the class
/// (C++ [class.mem]p2).
struct LateParsedDefaultArgument {
explicit LateParsedDefaultArgument(Decl *P,
CachedTokens *Toks = 0)
: Param(P), Toks(Toks) { }
/// Param - The parameter declaration for this parameter.
Decl *Param;
/// Toks - The sequence of tokens that comprises the default
/// argument expression, not including the '=' or the terminating
/// ')' or ','. This will be NULL for parameters that have no
/// default argument.
CachedTokens *Toks;
};
/// LateParsedMethodDeclaration - A method declaration inside a class that
/// contains at least one entity whose parsing needs to be delayed
/// until the class itself is completely-defined, such as a default
/// argument (C++ [class.mem]p2).
struct LateParsedMethodDeclaration : public LateParsedDeclaration {
explicit LateParsedMethodDeclaration(Parser *P, Decl *M)
: Self(P), Method(M), TemplateScope(false) { }
virtual void ParseLexedMethodDeclarations();
Parser* Self;
/// Method - The method declaration.
Decl *Method;
/// \brief Whether this member function had an associated template
/// scope. When true, D is a template declaration.
/// othewise, it is a member function declaration.
bool TemplateScope;
/// DefaultArgs - Contains the parameters of the function and
/// their default arguments. At least one of the parameters will
/// have a default argument, but all of the parameters of the
/// method will be stored so that they can be reintroduced into
/// scope at the appropriate times.
SmallVector<LateParsedDefaultArgument, 8> DefaultArgs;
};
/// LateParsedMemberInitializer - An initializer for a non-static class data
/// member whose parsing must to be delayed until the class is completely
/// defined (C++11 [class.mem]p2).
struct LateParsedMemberInitializer : public LateParsedDeclaration {
LateParsedMemberInitializer(Parser *P, Decl *FD)
: Self(P), Field(FD) { }
virtual void ParseLexedMemberInitializers();
Parser *Self;
/// Field - The field declaration.
Decl *Field;
/// CachedTokens - The sequence of tokens that comprises the initializer,
/// including any leading '='.
CachedTokens Toks;
};
/// LateParsedDeclarationsContainer - During parsing of a top (non-nested)
/// C++ class, its method declarations that contain parts that won't be
/// parsed until after the definition is completed (C++ [class.mem]p2),
/// the method declarations and possibly attached inline definitions
/// will be stored here with the tokens that will be parsed to create those entities.
typedef SmallVector<LateParsedDeclaration*, 2> LateParsedDeclarationsContainer;
/// \brief Representation of a class that has been parsed, including
/// any member function declarations or definitions that need to be
/// parsed after the corresponding top-level class is complete.
struct ParsingClass {
ParsingClass(Decl *TagOrTemplate, bool TopLevelClass)
: TopLevelClass(TopLevelClass), TemplateScope(false),
TagOrTemplate(TagOrTemplate) { }
/// \brief Whether this is a "top-level" class, meaning that it is
/// not nested within another class.
bool TopLevelClass : 1;
/// \brief Whether this class had an associated template
/// scope. When true, TagOrTemplate is a template declaration;
/// othewise, it is a tag declaration.
bool TemplateScope : 1;
/// \brief The class or class template whose definition we are parsing.
Decl *TagOrTemplate;
/// LateParsedDeclarations - Method declarations, inline definitions and
/// nested classes that contain pieces whose parsing will be delayed until
/// the top-level class is fully defined.
LateParsedDeclarationsContainer LateParsedDeclarations;
};
/// \brief The stack of classes that is currently being
/// parsed. Nested and local classes will be pushed onto this stack
/// when they are parsed, and removed afterward.
std::stack<ParsingClass *> ClassStack;
ParsingClass &getCurrentClass() {
assert(!ClassStack.empty() && "No lexed method stacks!");
return *ClassStack.top();
}
/// \brief RAII object used to inform the actions that we're
/// currently parsing a declaration. This is active when parsing a
/// variable's initializer, but not when parsing the body of a
/// class or function definition.
class ParsingDeclRAIIObject {
Sema &Actions;
Sema::ParsingDeclState State;
bool Popped;
public:
ParsingDeclRAIIObject(Parser &P) : Actions(P.Actions) {
push();
}
ParsingDeclRAIIObject(Parser &P, ParsingDeclRAIIObject *Other)
: Actions(P.Actions) {
if (Other) steal(*Other);
else push();
}
/// Creates a RAII object which steals the state from a different
/// object instead of pushing.
ParsingDeclRAIIObject(ParsingDeclRAIIObject &Other)
: Actions(Other.Actions) {
steal(Other);
}
~ParsingDeclRAIIObject() {
abort();
}
/// Resets the RAII object for a new declaration.
void reset() {
abort();
push();
}
/// Signals that the context was completed without an appropriate
/// declaration being parsed.
void abort() {
pop(0);
}
void complete(Decl *D) {
assert(!Popped && "ParsingDeclaration has already been popped!");
pop(D);
}
private:
void steal(ParsingDeclRAIIObject &Other) {
State = Other.State;
Popped = Other.Popped;
Other.Popped = true;
}
void push() {
State = Actions.PushParsingDeclaration();
Popped = false;
}
void pop(Decl *D) {
if (!Popped) {
Actions.PopParsingDeclaration(State, D);
Popped = true;
}
}
};
/// A class for parsing a DeclSpec.
class ParsingDeclSpec : public DeclSpec {
ParsingDeclRAIIObject ParsingRAII;
public:
ParsingDeclSpec(Parser &P) : DeclSpec(P.AttrFactory), ParsingRAII(P) {}
ParsingDeclSpec(Parser &P, ParsingDeclRAIIObject *RAII)
: DeclSpec(P.AttrFactory), ParsingRAII(P, RAII) {}
void complete(Decl *D) {
ParsingRAII.complete(D);
}
void abort() {
ParsingRAII.abort();
}
};
/// A class for parsing a declarator.
class ParsingDeclarator : public Declarator {
ParsingDeclRAIIObject ParsingRAII;
public:
ParsingDeclarator(Parser &P, const ParsingDeclSpec &DS, TheContext C)
: Declarator(DS, C), ParsingRAII(P) {
}
const ParsingDeclSpec &getDeclSpec() const {
return static_cast<const ParsingDeclSpec&>(Declarator::getDeclSpec());
}
ParsingDeclSpec &getMutableDeclSpec() const {
return const_cast<ParsingDeclSpec&>(getDeclSpec());
}
void clear() {
Declarator::clear();
ParsingRAII.reset();
}
void complete(Decl *D) {
ParsingRAII.complete(D);
}
};
/// \brief RAII object used to
class ParsingClassDefinition {
Parser &P;
bool Popped;
Sema::ParsingClassState State;
public:
ParsingClassDefinition(Parser &P, Decl *TagOrTemplate, bool TopLevelClass)
: P(P), Popped(false),
State(P.PushParsingClass(TagOrTemplate, TopLevelClass)) {
}
/// \brief Pop this class of the stack.
void Pop() {
assert(!Popped && "Nested class has already been popped");
Popped = true;
P.PopParsingClass(State);
}
~ParsingClassDefinition() {
if (!Popped)
P.PopParsingClass(State);
}
};
/// \brief Contains information about any template-specific
/// information that has been parsed prior to parsing declaration
/// specifiers.
struct ParsedTemplateInfo {
ParsedTemplateInfo()
: Kind(NonTemplate), TemplateParams(0), TemplateLoc() { }
ParsedTemplateInfo(TemplateParameterLists *TemplateParams,
bool isSpecialization,
bool lastParameterListWasEmpty = false)
: Kind(isSpecialization? ExplicitSpecialization : Template),
TemplateParams(TemplateParams),
LastParameterListWasEmpty(lastParameterListWasEmpty) { }
explicit ParsedTemplateInfo(SourceLocation ExternLoc,
SourceLocation TemplateLoc)
: Kind(ExplicitInstantiation), TemplateParams(0),
ExternLoc(ExternLoc), TemplateLoc(TemplateLoc),
LastParameterListWasEmpty(false){ }
/// \brief The kind of template we are parsing.
enum {
/// \brief We are not parsing a template at all.
NonTemplate = 0,
/// \brief We are parsing a template declaration.
Template,
/// \brief We are parsing an explicit specialization.
ExplicitSpecialization,
/// \brief We are parsing an explicit instantiation.
ExplicitInstantiation
} Kind;
/// \brief The template parameter lists, for template declarations
/// and explicit specializations.
TemplateParameterLists *TemplateParams;
/// \brief The location of the 'extern' keyword, if any, for an explicit
/// instantiation
SourceLocation ExternLoc;
/// \brief The location of the 'template' keyword, for an explicit
/// instantiation.
SourceLocation TemplateLoc;
/// \brief Whether the last template parameter list was empty.
bool LastParameterListWasEmpty;
SourceRange getSourceRange() const;
};
/// \brief Contains a late templated function.
/// Will be parsed at the end of the translation unit.
struct LateParsedTemplatedFunction {
explicit LateParsedTemplatedFunction(Parser* P, Decl *MD)
: D(MD) {}
CachedTokens Toks;
/// \brief The template function declaration to be late parsed.
Decl *D;
};
void LexTemplateFunctionForLateParsing(CachedTokens &Toks);
void ParseLateTemplatedFuncDef(LateParsedTemplatedFunction &LMT);
typedef llvm::DenseMap<const FunctionDecl*, LateParsedTemplatedFunction*>
LateParsedTemplateMapT;
LateParsedTemplateMapT LateParsedTemplateMap;
static void LateTemplateParserCallback(void *P, const FunctionDecl *FD);
void LateTemplateParser(const FunctionDecl *FD);
Sema::ParsingClassState
PushParsingClass(Decl *TagOrTemplate, bool TopLevelClass);
void DeallocateParsedClasses(ParsingClass *Class);
void PopParsingClass(Sema::ParsingClassState);
Decl *ParseCXXInlineMethodDef(AccessSpecifier AS, AttributeList *AccessAttrs,
ParsingDeclarator &D,
const ParsedTemplateInfo &TemplateInfo,
const VirtSpecifiers& VS, ExprResult& Init);
void ParseCXXNonStaticMemberInitializer(Decl *VarD);
void ParseLexedAttributes(ParsingClass &Class);
void ParseLexedAttribute(LateParsedAttribute &LA);
void ParseLexedMethodDeclarations(ParsingClass &Class);
void ParseLexedMethodDeclaration(LateParsedMethodDeclaration &LM);
void ParseLexedMethodDefs(ParsingClass &Class);
void ParseLexedMethodDef(LexedMethod &LM);
void ParseLexedMemberInitializers(ParsingClass &Class);
void ParseLexedMemberInitializer(LateParsedMemberInitializer &MI);
Decl *ParseLexedObjCMethodDefs(LexedMethod &LM);
bool ConsumeAndStoreFunctionPrologue(CachedTokens &Toks);
bool ConsumeAndStoreUntil(tok::TokenKind T1,
CachedTokens &Toks,
bool StopAtSemi = true,
bool ConsumeFinalToken = true) {
return ConsumeAndStoreUntil(T1, T1, Toks, StopAtSemi, ConsumeFinalToken);
}
bool ConsumeAndStoreUntil(tok::TokenKind T1, tok::TokenKind T2,
CachedTokens &Toks,
bool StopAtSemi = true,
bool ConsumeFinalToken = true);
//===--------------------------------------------------------------------===//
// C99 6.9: External Definitions.
struct ParsedAttributesWithRange : ParsedAttributes {
ParsedAttributesWithRange(AttributeFactory &factory)
: ParsedAttributes(factory) {}
SourceRange Range;
};
DeclGroupPtrTy ParseExternalDeclaration(ParsedAttributesWithRange &attrs,
ParsingDeclSpec *DS = 0);
bool isDeclarationAfterDeclarator();
bool isStartOfFunctionDefinition(const ParsingDeclarator &Declarator);
DeclGroupPtrTy ParseDeclarationOrFunctionDefinition(ParsedAttributes &attrs,
AccessSpecifier AS = AS_none);
DeclGroupPtrTy ParseDeclarationOrFunctionDefinition(ParsingDeclSpec &DS,
AccessSpecifier AS = AS_none);
Decl *ParseFunctionDefinition(ParsingDeclarator &D,
const ParsedTemplateInfo &TemplateInfo = ParsedTemplateInfo());
void ParseKNRParamDeclarations(Declarator &D);
// EndLoc, if non-NULL, is filled with the location of the last token of
// the simple-asm.
ExprResult ParseSimpleAsm(SourceLocation *EndLoc = 0);
ExprResult ParseAsmStringLiteral();
// Objective-C External Declarations
Parser::DeclGroupPtrTy ParseObjCAtDirectives();
Parser::DeclGroupPtrTy ParseObjCAtClassDeclaration(SourceLocation atLoc);
Decl *ParseObjCAtInterfaceDeclaration(SourceLocation atLoc,
ParsedAttributes &prefixAttrs);
void ParseObjCClassInstanceVariables(Decl *interfaceDecl,
tok::ObjCKeywordKind visibility,
SourceLocation atLoc);
bool ParseObjCProtocolReferences(SmallVectorImpl<Decl *> &P,
SmallVectorImpl<SourceLocation> &PLocs,
bool WarnOnDeclarations,
SourceLocation &LAngleLoc,
SourceLocation &EndProtoLoc);
bool ParseObjCProtocolQualifiers(DeclSpec &DS);
void ParseObjCInterfaceDeclList(tok::ObjCKeywordKind contextKey,
Decl *CDecl);
Decl *ParseObjCAtProtocolDeclaration(SourceLocation atLoc,
ParsedAttributes &prefixAttrs);
Decl *ObjCImpDecl;
SmallVector<Decl *, 4> PendingObjCImpDecl;
typedef SmallVector<LexedMethod*, 2> LateParsedObjCMethodContainer;
LateParsedObjCMethodContainer LateParsedObjCMethods;
Decl *ParseObjCAtImplementationDeclaration(SourceLocation atLoc);
DeclGroupPtrTy ParseObjCAtEndDeclaration(SourceRange atEnd);
Decl *ParseObjCAtAliasDeclaration(SourceLocation atLoc);
Decl *ParseObjCPropertySynthesize(SourceLocation atLoc);
Decl *ParseObjCPropertyDynamic(SourceLocation atLoc);
IdentifierInfo *ParseObjCSelectorPiece(SourceLocation &MethodLocation);
// Definitions for Objective-c context sensitive keywords recognition.
enum ObjCTypeQual {
objc_in=0, objc_out, objc_inout, objc_oneway, objc_bycopy, objc_byref,
objc_NumQuals
};
IdentifierInfo *ObjCTypeQuals[objc_NumQuals];
bool isTokIdentifier_in() const;
ParsedType ParseObjCTypeName(ObjCDeclSpec &DS, Declarator::TheContext Ctx,
ParsedAttributes *ParamAttrs);
void ParseObjCMethodRequirement();
Decl *ParseObjCMethodPrototype(
tok::ObjCKeywordKind MethodImplKind = tok::objc_not_keyword,
bool MethodDefinition = true);
Decl *ParseObjCMethodDecl(SourceLocation mLoc, tok::TokenKind mType,
tok::ObjCKeywordKind MethodImplKind = tok::objc_not_keyword,
bool MethodDefinition=true);
void ParseObjCPropertyAttribute(ObjCDeclSpec &DS);
Decl *ParseObjCMethodDefinition();
//===--------------------------------------------------------------------===//
// C99 6.5: Expressions.
ExprResult ParseExpression();
ExprResult ParseConstantExpression();
// Expr that doesn't include commas.
ExprResult ParseAssignmentExpression();
ExprResult ParseExpressionWithLeadingAt(SourceLocation AtLoc);
ExprResult ParseExpressionWithLeadingExtension(SourceLocation ExtLoc);
ExprResult ParseRHSOfBinaryExpression(ExprResult LHS,
prec::Level MinPrec);
ExprResult ParseCastExpression(bool isUnaryExpression,
bool isAddressOfOperand,
bool &NotCastExpr,
bool isTypeCast);
ExprResult ParseCastExpression(bool isUnaryExpression,
bool isAddressOfOperand = false,
bool isTypeCast = false);
/// Returns true if the next token would start a postfix-expression
/// suffix.
bool isPostfixExpressionSuffixStart() {
tok::TokenKind K = Tok.getKind();
return (K == tok::l_square || K == tok::l_paren ||
K == tok::period || K == tok::arrow ||
K == tok::plusplus || K == tok::minusminus);
}
ExprResult ParsePostfixExpressionSuffix(ExprResult LHS);
ExprResult ParseUnaryExprOrTypeTraitExpression();
ExprResult ParseBuiltinPrimaryExpression();
ExprResult ParseExprAfterUnaryExprOrTypeTrait(const Token &OpTok,
bool &isCastExpr,
ParsedType &CastTy,
SourceRange &CastRange);
typedef SmallVector<Expr*, 20> ExprListTy;
typedef SmallVector<SourceLocation, 20> CommaLocsTy;
/// ParseExpressionList - Used for C/C++ (argument-)expression-list.
bool ParseExpressionList(SmallVectorImpl<Expr*> &Exprs,
SmallVectorImpl<SourceLocation> &CommaLocs,
void (Sema::*Completer)(Scope *S,
Expr *Data,
Expr **Args,
unsigned NumArgs) = 0,
Expr *Data = 0);
/// ParenParseOption - Control what ParseParenExpression will parse.
enum ParenParseOption {
SimpleExpr, // Only parse '(' expression ')'
CompoundStmt, // Also allow '(' compound-statement ')'
CompoundLiteral, // Also allow '(' type-name ')' '{' ... '}'
CastExpr // Also allow '(' type-name ')' <anything>
};
ExprResult ParseParenExpression(ParenParseOption &ExprType,
bool stopIfCastExpr,
bool isTypeCast,
ParsedType &CastTy,
SourceLocation &RParenLoc);
ExprResult ParseCXXAmbiguousParenExpression(ParenParseOption &ExprType,
ParsedType &CastTy,
BalancedDelimiterTracker &Tracker);
ExprResult ParseCompoundLiteralExpression(ParsedType Ty,
SourceLocation LParenLoc,
SourceLocation RParenLoc);
ExprResult ParseStringLiteralExpression();
ExprResult ParseGenericSelectionExpression();
//===--------------------------------------------------------------------===//
// C++ Expressions
ExprResult ParseCXXIdExpression(bool isAddressOfOperand = false);
void CheckForTemplateAndDigraph(Token &Next, ParsedType ObjectTypePtr,
bool EnteringContext, IdentifierInfo &II,
CXXScopeSpec &SS);
bool ParseOptionalCXXScopeSpecifier(CXXScopeSpec &SS,
ParsedType ObjectType,
bool EnteringContext,
bool *MayBePseudoDestructor = 0,
bool IsTypename = false);
//===--------------------------------------------------------------------===//
// C++0x 5.1.2: Lambda expressions
// [...] () -> type {...}
ExprResult ParseLambdaExpression();
ExprResult TryParseLambdaExpression();
llvm::Optional<unsigned> ParseLambdaIntroducer(LambdaIntroducer &Intro);
bool TryParseLambdaIntroducer(LambdaIntroducer &Intro);
ExprResult ParseLambdaExpressionAfterIntroducer(
LambdaIntroducer &Intro);
//===--------------------------------------------------------------------===//
// C++ 5.2p1: C++ Casts
ExprResult ParseCXXCasts();
//===--------------------------------------------------------------------===//
// C++ 5.2p1: C++ Type Identification
ExprResult ParseCXXTypeid();
//===--------------------------------------------------------------------===//
// C++ : Microsoft __uuidof Expression
ExprResult ParseCXXUuidof();
//===--------------------------------------------------------------------===//
// C++ 5.2.4: C++ Pseudo-Destructor Expressions
ExprResult ParseCXXPseudoDestructor(ExprArg Base, SourceLocation OpLoc,
tok::TokenKind OpKind,
CXXScopeSpec &SS,
ParsedType ObjectType);
//===--------------------------------------------------------------------===//
// C++ 9.3.2: C++ 'this' pointer
ExprResult ParseCXXThis();
//===--------------------------------------------------------------------===//
// C++ 15: C++ Throw Expression
ExprResult ParseThrowExpression();
ExceptionSpecificationType MaybeParseExceptionSpecification(
SourceRange &SpecificationRange,
SmallVectorImpl<ParsedType> &DynamicExceptions,
SmallVectorImpl<SourceRange> &DynamicExceptionRanges,
ExprResult &NoexceptExpr);
// EndLoc is filled with the location of the last token of the specification.
ExceptionSpecificationType ParseDynamicExceptionSpecification(
SourceRange &SpecificationRange,
SmallVectorImpl<ParsedType> &Exceptions,
SmallVectorImpl<SourceRange> &Ranges);
//===--------------------------------------------------------------------===//
// C++0x 8: Function declaration trailing-return-type
TypeResult ParseTrailingReturnType(SourceRange &Range);
//===--------------------------------------------------------------------===//
// C++ 2.13.5: C++ Boolean Literals
ExprResult ParseCXXBoolLiteral();
//===--------------------------------------------------------------------===//
// C++ 5.2.3: Explicit type conversion (functional notation)
ExprResult ParseCXXTypeConstructExpression(const DeclSpec &DS);
bool isCXXSimpleTypeSpecifier() const;
/// ParseCXXSimpleTypeSpecifier - [C++ 7.1.5.2] Simple type specifiers.
/// This should only be called when the current token is known to be part of
/// simple-type-specifier.
void ParseCXXSimpleTypeSpecifier(DeclSpec &DS);
bool ParseCXXTypeSpecifierSeq(DeclSpec &DS);
//===--------------------------------------------------------------------===//
// C++ 5.3.4 and 5.3.5: C++ new and delete
bool ParseExpressionListOrTypeId(SmallVectorImpl<Expr*> &Exprs,
Declarator &D);
void ParseDirectNewDeclarator(Declarator &D);
ExprResult ParseCXXNewExpression(bool UseGlobal, SourceLocation Start);
ExprResult ParseCXXDeleteExpression(bool UseGlobal,
SourceLocation Start);
//===--------------------------------------------------------------------===//
// C++ if/switch/while condition expression.
bool ParseCXXCondition(ExprResult &ExprResult, Decl *&DeclResult,
SourceLocation Loc, bool ConvertToBoolean);
//===--------------------------------------------------------------------===//
// C++ types
//===--------------------------------------------------------------------===//
// C99 6.7.8: Initialization.
/// ParseInitializer
/// initializer: [C99 6.7.8]
/// assignment-expression
/// '{' ...
ExprResult ParseInitializer() {
if (Tok.isNot(tok::l_brace))
return ParseAssignmentExpression();
return ParseBraceInitializer();
}
ExprResult ParseBraceInitializer();
ExprResult ParseInitializerWithPotentialDesignator();
//===--------------------------------------------------------------------===//
// clang Expressions
ExprResult ParseBlockLiteralExpression(); // ^{...}
//===--------------------------------------------------------------------===//
// Objective-C Expressions
ExprResult ParseObjCAtExpression(SourceLocation AtLocation);
ExprResult ParseObjCStringLiteral(SourceLocation AtLoc);
ExprResult ParseObjCEncodeExpression(SourceLocation AtLoc);
ExprResult ParseObjCSelectorExpression(SourceLocation AtLoc);
ExprResult ParseObjCProtocolExpression(SourceLocation AtLoc);
bool isSimpleObjCMessageExpression();
ExprResult ParseObjCMessageExpression();
ExprResult ParseObjCMessageExpressionBody(SourceLocation LBracloc,
SourceLocation SuperLoc,
ParsedType ReceiverType,
ExprArg ReceiverExpr);
ExprResult ParseAssignmentExprWithObjCMessageExprStart(
SourceLocation LBracloc, SourceLocation SuperLoc,
ParsedType ReceiverType, ExprArg ReceiverExpr);
bool ParseObjCXXMessageReceiver(bool &IsExpr, void *&TypeOrExpr);
//===--------------------------------------------------------------------===//
// C99 6.8: Statements and Blocks.
StmtResult ParseStatement() {
StmtVector Stmts(Actions);
return ParseStatementOrDeclaration(Stmts, true);
}
StmtResult ParseStatementOrDeclaration(StmtVector& Stmts,
bool OnlyStatement = false);
StmtResult ParseExprStatement(ParsedAttributes &Attrs);
StmtResult ParseLabeledStatement(ParsedAttributes &Attr);
StmtResult ParseCaseStatement(ParsedAttributes &Attr,
bool MissingCase = false,
ExprResult Expr = ExprResult());
StmtResult ParseDefaultStatement(ParsedAttributes &Attr);
StmtResult ParseCompoundStatement(ParsedAttributes &Attr,
bool isStmtExpr = false);
StmtResult ParseCompoundStatement(ParsedAttributes &Attr,
bool isStmtExpr,
unsigned ScopeFlags);
StmtResult ParseCompoundStatementBody(bool isStmtExpr = false);
bool ParseParenExprOrCondition(ExprResult &ExprResult,
Decl *&DeclResult,
SourceLocation Loc,
bool ConvertToBoolean);
StmtResult ParseIfStatement(ParsedAttributes &Attr);
StmtResult ParseSwitchStatement(ParsedAttributes &Attr);
StmtResult ParseWhileStatement(ParsedAttributes &Attr);
StmtResult ParseDoStatement(ParsedAttributes &Attr);
StmtResult ParseForStatement(ParsedAttributes &Attr);
StmtResult ParseGotoStatement(ParsedAttributes &Attr);
StmtResult ParseContinueStatement(ParsedAttributes &Attr);
StmtResult ParseBreakStatement(ParsedAttributes &Attr);
StmtResult ParseReturnStatement(ParsedAttributes &Attr);
StmtResult ParseAsmStatement(bool &msAsm);
StmtResult ParseMicrosoftAsmStatement(SourceLocation AsmLoc);
bool ParseMicrosoftIfExistsCondition(bool& Result);
void ParseMicrosoftIfExistsStatement(StmtVector &Stmts);
void ParseMicrosoftIfExistsExternalDeclaration();
void ParseMicrosoftIfExistsClassDeclaration(DeclSpec::TST TagType,
AccessSpecifier& CurAS);
bool ParseAsmOperandsOpt(SmallVectorImpl<IdentifierInfo *> &Names,
SmallVectorImpl<Expr *> &Constraints,
SmallVectorImpl<Expr *> &Exprs);
//===--------------------------------------------------------------------===//
// C++ 6: Statements and Blocks
StmtResult ParseCXXTryBlock(ParsedAttributes &Attr);
StmtResult ParseCXXTryBlockCommon(SourceLocation TryLoc);
StmtResult ParseCXXCatchBlock();
//===--------------------------------------------------------------------===//
// MS: SEH Statements and Blocks
StmtResult ParseSEHTryBlock(ParsedAttributes &Attr);
StmtResult ParseSEHTryBlockCommon(SourceLocation Loc);
StmtResult ParseSEHExceptBlock(SourceLocation Loc);
StmtResult ParseSEHFinallyBlock(SourceLocation Loc);
//===--------------------------------------------------------------------===//
// Objective-C Statements
StmtResult ParseObjCAtStatement(SourceLocation atLoc);
StmtResult ParseObjCTryStmt(SourceLocation atLoc);
StmtResult ParseObjCThrowStmt(SourceLocation atLoc);
StmtResult ParseObjCSynchronizedStmt(SourceLocation atLoc);
StmtResult ParseObjCAutoreleasePoolStmt(SourceLocation atLoc);
//===--------------------------------------------------------------------===//
// C99 6.7: Declarations.
/// A context for parsing declaration specifiers. TODO: flesh this
/// out, there are other significant restrictions on specifiers than
/// would be best implemented in the parser.
enum DeclSpecContext {
DSC_normal, // normal context
DSC_class, // class context, enables 'friend'
DSC_top_level // top-level/namespace declaration context
};
/// Information on a C++0x for-range-initializer found while parsing a
/// declaration which turns out to be a for-range-declaration.
struct ForRangeInit {
SourceLocation ColonLoc;
ExprResult RangeExpr;
bool ParsedForRangeDecl() { return !ColonLoc.isInvalid(); }
};
DeclGroupPtrTy ParseDeclaration(StmtVector &Stmts,
unsigned Context, SourceLocation &DeclEnd,
ParsedAttributesWithRange &attrs);
DeclGroupPtrTy ParseSimpleDeclaration(StmtVector &Stmts,
unsigned Context,
SourceLocation &DeclEnd,
ParsedAttributes &attrs,
bool RequireSemi,
ForRangeInit *FRI = 0);
DeclGroupPtrTy ParseDeclGroup(ParsingDeclSpec &DS, unsigned Context,
bool AllowFunctionDefinitions,
SourceLocation *DeclEnd = 0,
ForRangeInit *FRI = 0);
Decl *ParseDeclarationAfterDeclarator(Declarator &D,
const ParsedTemplateInfo &TemplateInfo = ParsedTemplateInfo());
bool ParseAttributesAfterDeclarator(Declarator &D);
Decl *ParseDeclarationAfterDeclaratorAndAttributes(Declarator &D,
const ParsedTemplateInfo &TemplateInfo = ParsedTemplateInfo());
Decl *ParseFunctionStatementBody(Decl *Decl, ParseScope &BodyScope);
Decl *ParseFunctionTryBlock(Decl *Decl, ParseScope &BodyScope);
/// \brief When in code-completion, skip parsing of the function/method body
/// unless the body contains the code-completion point.
///
/// \returns true if the function body was skipped.
bool trySkippingFunctionBodyForCodeCompletion();
bool ParseImplicitInt(DeclSpec &DS, CXXScopeSpec *SS,
const ParsedTemplateInfo &TemplateInfo,
AccessSpecifier AS);
DeclSpecContext getDeclSpecContextFromDeclaratorContext(unsigned Context);
void ParseDeclarationSpecifiers(DeclSpec &DS,
const ParsedTemplateInfo &TemplateInfo = ParsedTemplateInfo(),
AccessSpecifier AS = AS_none,
DeclSpecContext DSC = DSC_normal);
bool ParseOptionalTypeSpecifier(DeclSpec &DS, bool &isInvalid,
const char *&PrevSpec,
unsigned &DiagID,
const ParsedTemplateInfo &TemplateInfo = ParsedTemplateInfo(),
bool SuppressDeclarations = false);
void ParseSpecifierQualifierList(DeclSpec &DS, AccessSpecifier AS = AS_none);
void ParseObjCTypeQualifierList(ObjCDeclSpec &DS,
Declarator::TheContext Context);
void ParseEnumSpecifier(SourceLocation TagLoc, DeclSpec &DS,
const ParsedTemplateInfo &TemplateInfo = ParsedTemplateInfo(),
AccessSpecifier AS = AS_none);
void ParseEnumBody(SourceLocation StartLoc, Decl *TagDecl);
void ParseStructUnionBody(SourceLocation StartLoc, unsigned TagType,
Decl *TagDecl);
struct FieldCallback {
virtual Decl *invoke(FieldDeclarator &Field) = 0;
virtual ~FieldCallback() {}
private:
virtual void _anchor();
};
struct ObjCPropertyCallback;
void ParseStructDeclaration(DeclSpec &DS, FieldCallback &Callback);
bool isDeclarationSpecifier(bool DisambiguatingWithExpression = false);
bool isTypeSpecifierQualifier();
bool isTypeQualifier() const;
/// isKnownToBeTypeSpecifier - Return true if we know that the specified token
/// is definitely a type-specifier. Return false if it isn't part of a type
/// specifier or if we're not sure.
bool isKnownToBeTypeSpecifier(const Token &Tok) const;
/// isDeclarationStatement - Disambiguates between a declaration or an
/// expression statement, when parsing function bodies.
/// Returns true for declaration, false for expression.
bool isDeclarationStatement() {
if (getLang().CPlusPlus)
return isCXXDeclarationStatement();
return isDeclarationSpecifier(true);
}
/// isSimpleDeclaration - Disambiguates between a declaration or an
/// expression, mainly used for the C 'clause-1' or the C++
// 'for-init-statement' part of a 'for' statement.
/// Returns true for declaration, false for expression.
bool isSimpleDeclaration() {
if (getLang().CPlusPlus)
return isCXXSimpleDeclaration();
return isDeclarationSpecifier(true);
}
/// \brief Determine whether we are currently at the start of an Objective-C
/// class message that appears to be missing the open bracket '['.
bool isStartOfObjCClassMessageMissingOpenBracket();
/// \brief Starting with a scope specifier, identifier, or
/// template-id that refers to the current class, determine whether
/// this is a constructor declarator.
bool isConstructorDeclarator();
/// \brief Specifies the context in which type-id/expression
/// disambiguation will occur.
enum TentativeCXXTypeIdContext {
TypeIdInParens,
TypeIdAsTemplateArgument
};
/// isTypeIdInParens - Assumes that a '(' was parsed and now we want to know
/// whether the parens contain an expression or a type-id.
/// Returns true for a type-id and false for an expression.
bool isTypeIdInParens(bool &isAmbiguous) {
if (getLang().CPlusPlus)
return isCXXTypeId(TypeIdInParens, isAmbiguous);
isAmbiguous = false;
return isTypeSpecifierQualifier();
}
bool isTypeIdInParens() {
bool isAmbiguous;
return isTypeIdInParens(isAmbiguous);
}
/// isCXXDeclarationStatement - C++-specialized function that disambiguates
/// between a declaration or an expression statement, when parsing function
/// bodies. Returns true for declaration, false for expression.
bool isCXXDeclarationStatement();
/// isCXXSimpleDeclaration - C++-specialized function that disambiguates
/// between a simple-declaration or an expression-statement.
/// If during the disambiguation process a parsing error is encountered,
/// the function returns true to let the declaration parsing code handle it.
/// Returns false if the statement is disambiguated as expression.
bool isCXXSimpleDeclaration();
/// isCXXFunctionDeclarator - Disambiguates between a function declarator or
/// a constructor-style initializer, when parsing declaration statements.
/// Returns true for function declarator and false for constructor-style
/// initializer. If 'warnIfAmbiguous' is true a warning will be emitted to
/// indicate that the parens were disambiguated as function declarator.
/// If during the disambiguation process a parsing error is encountered,
/// the function returns true to let the declaration parsing code handle it.
bool isCXXFunctionDeclarator(bool warnIfAmbiguous);
/// isCXXConditionDeclaration - Disambiguates between a declaration or an
/// expression for a condition of a if/switch/while/for statement.
/// If during the disambiguation process a parsing error is encountered,
/// the function returns true to let the declaration parsing code handle it.
bool isCXXConditionDeclaration();
bool isCXXTypeId(TentativeCXXTypeIdContext Context, bool &isAmbiguous);
bool isCXXTypeId(TentativeCXXTypeIdContext Context) {
bool isAmbiguous;
return isCXXTypeId(Context, isAmbiguous);
}
/// TPResult - Used as the result value for functions whose purpose is to
/// disambiguate C++ constructs by "tentatively parsing" them.
/// This is a class instead of a simple enum because the implicit enum-to-bool
/// conversions may cause subtle bugs.
class TPResult {
enum Result {
TPR_true,
TPR_false,
TPR_ambiguous,
TPR_error
};
Result Res;
TPResult(Result result) : Res(result) {}
public:
static TPResult True() { return TPR_true; }
static TPResult False() { return TPR_false; }
static TPResult Ambiguous() { return TPR_ambiguous; }
static TPResult Error() { return TPR_error; }
bool operator==(const TPResult &RHS) const { return Res == RHS.Res; }
bool operator!=(const TPResult &RHS) const { return Res != RHS.Res; }
};
/// \brief Based only on the given token kind, determine whether we know that
/// we're at the start of an expression or a type-specifier-seq (which may
/// be an expression, in C++).
///
/// This routine does not attempt to resolve any of the trick cases, e.g.,
/// those involving lookup of identifiers.
///
/// \returns \c TPR_true if this token starts an expression, \c TPR_false if
/// this token starts a type-specifier-seq, or \c TPR_ambiguous if it cannot
/// tell.
TPResult isExpressionOrTypeSpecifierSimple(tok::TokenKind Kind);
/// isCXXDeclarationSpecifier - Returns TPResult::True() if it is a
/// declaration specifier, TPResult::False() if it is not,
/// TPResult::Ambiguous() if it could be either a decl-specifier or a
/// function-style cast, and TPResult::Error() if a parsing error was
/// encountered.
/// Doesn't consume tokens.
TPResult isCXXDeclarationSpecifier();
// "Tentative parsing" functions, used for disambiguation. If a parsing error
// is encountered they will return TPResult::Error().
// Returning TPResult::True()/False() indicates that the ambiguity was
// resolved and tentative parsing may stop. TPResult::Ambiguous() indicates
// that more tentative parsing is necessary for disambiguation.
// They all consume tokens, so backtracking should be used after calling them.
TPResult TryParseDeclarationSpecifier();
TPResult TryParseSimpleDeclaration();
TPResult TryParseTypeofSpecifier();
TPResult TryParseProtocolQualifiers();
TPResult TryParseInitDeclaratorList();
TPResult TryParseDeclarator(bool mayBeAbstract, bool mayHaveIdentifier=true);
TPResult TryParseParameterDeclarationClause();
TPResult TryParseFunctionDeclarator();
TPResult TryParseBracketDeclarator();
TypeResult ParseTypeName(SourceRange *Range = 0,
Declarator::TheContext Context
= Declarator::TypeNameContext,
AccessSpecifier AS = AS_none,
Decl **OwnedType = 0);
void ParseBlockId();
void ProhibitAttributes(ParsedAttributesWithRange &attrs) {
if (!attrs.Range.isValid()) return;
DiagnoseProhibitedAttributes(attrs);
}
void DiagnoseProhibitedAttributes(ParsedAttributesWithRange &attrs);
void MaybeParseGNUAttributes(Declarator &D,
LateParsedAttrList *LateAttrs = 0) {
if (Tok.is(tok::kw___attribute)) {
ParsedAttributes attrs(AttrFactory);
SourceLocation endLoc;
ParseGNUAttributes(attrs, &endLoc, LateAttrs);
D.takeAttributes(attrs, endLoc);
}
}
void MaybeParseGNUAttributes(ParsedAttributes &attrs,
SourceLocation *endLoc = 0,
LateParsedAttrList *LateAttrs = 0) {
if (Tok.is(tok::kw___attribute))
ParseGNUAttributes(attrs, endLoc, LateAttrs);
}
void ParseGNUAttributes(ParsedAttributes &attrs,
SourceLocation *endLoc = 0,
LateParsedAttrList *LateAttrs = 0);
void ParseGNUAttributeArgs(IdentifierInfo *AttrName,
SourceLocation AttrNameLoc,
ParsedAttributes &Attrs,
SourceLocation *EndLoc);
void MaybeParseCXX0XAttributes(Declarator &D) {
if (getLang().CPlusPlus0x && isCXX0XAttributeSpecifier()) {
ParsedAttributesWithRange attrs(AttrFactory);
SourceLocation endLoc;
ParseCXX0XAttributes(attrs, &endLoc);
D.takeAttributes(attrs, endLoc);
}
}
void MaybeParseCXX0XAttributes(ParsedAttributes &attrs,
SourceLocation *endLoc = 0) {
if (getLang().CPlusPlus0x && isCXX0XAttributeSpecifier()) {
ParsedAttributesWithRange attrsWithRange(AttrFactory);
ParseCXX0XAttributes(attrsWithRange, endLoc);
attrs.takeAllFrom(attrsWithRange);
}
}
void MaybeParseCXX0XAttributes(ParsedAttributesWithRange &attrs,
SourceLocation *endLoc = 0) {
if (getLang().CPlusPlus0x && isCXX0XAttributeSpecifier())
ParseCXX0XAttributes(attrs, endLoc);
}
void ParseCXX0XAttributeSpecifier(ParsedAttributes &attrs,
SourceLocation *EndLoc = 0);
void ParseCXX0XAttributes(ParsedAttributesWithRange &attrs,
SourceLocation *EndLoc = 0);
void MaybeParseMicrosoftAttributes(ParsedAttributes &attrs,
SourceLocation *endLoc = 0) {
if (getLang().MicrosoftExt && Tok.is(tok::l_square))
ParseMicrosoftAttributes(attrs, endLoc);
}
void ParseMicrosoftAttributes(ParsedAttributes &attrs,
SourceLocation *endLoc = 0);
void ParseMicrosoftDeclSpec(ParsedAttributes &attrs);
void ParseMicrosoftTypeAttributes(ParsedAttributes &attrs);
void ParseBorlandTypeAttributes(ParsedAttributes &attrs);
void ParseOpenCLAttributes(ParsedAttributes &attrs);
void ParseOpenCLQualifiers(DeclSpec &DS);
VersionTuple ParseVersionTuple(SourceRange &Range);
void ParseAvailabilityAttribute(IdentifierInfo &Availability,
SourceLocation AvailabilityLoc,
ParsedAttributes &attrs,
SourceLocation *endLoc);
bool IsThreadSafetyAttribute(llvm::StringRef AttrName);
void ParseThreadSafetyAttribute(IdentifierInfo &AttrName,
SourceLocation AttrNameLoc,
ParsedAttributes &Attrs,
SourceLocation *EndLoc);
void ParseTypeofSpecifier(DeclSpec &DS);
void ParseDecltypeSpecifier(DeclSpec &DS);
void ParseUnderlyingTypeSpecifier(DeclSpec &DS);
void ParseAtomicSpecifier(DeclSpec &DS);
ExprResult ParseAlignArgument(SourceLocation Start);
void ParseAlignmentSpecifier(ParsedAttributes &Attrs,
SourceLocation *endLoc = 0);
VirtSpecifiers::Specifier isCXX0XVirtSpecifier() const;
void ParseOptionalCXX0XVirtSpecifierSeq(VirtSpecifiers &VS);
bool isCXX0XFinalKeyword() const;
/// DeclaratorScopeObj - RAII object used in Parser::ParseDirectDeclarator to
/// enter a new C++ declarator scope and exit it when the function is
/// finished.
class DeclaratorScopeObj {
Parser &P;
CXXScopeSpec &SS;
bool EnteredScope;
bool CreatedScope;
public:
DeclaratorScopeObj(Parser &p, CXXScopeSpec &ss)
: P(p), SS(ss), EnteredScope(false), CreatedScope(false) {}
void EnterDeclaratorScope() {
assert(!EnteredScope && "Already entered the scope!");
assert(SS.isSet() && "C++ scope was not set!");
CreatedScope = true;
P.EnterScope(0); // Not a decl scope.
if (!P.Actions.ActOnCXXEnterDeclaratorScope(P.getCurScope(), SS))
EnteredScope = true;
}
~DeclaratorScopeObj() {
if (EnteredScope) {
assert(SS.isSet() && "C++ scope was cleared ?");
P.Actions.ActOnCXXExitDeclaratorScope(P.getCurScope(), SS);
}
if (CreatedScope)
P.ExitScope();
}
};
/// ParseDeclarator - Parse and verify a newly-initialized declarator.
void ParseDeclarator(Declarator &D);
/// A function that parses a variant of direct-declarator.
typedef void (Parser::*DirectDeclParseFunction)(Declarator&);
void ParseDeclaratorInternal(Declarator &D,
DirectDeclParseFunction DirectDeclParser);
void ParseTypeQualifierListOpt(DeclSpec &DS, bool GNUAttributesAllowed = true,
bool CXX0XAttributesAllowed = true);
void ParseDirectDeclarator(Declarator &D);
void ParseParenDeclarator(Declarator &D);
void ParseFunctionDeclarator(Declarator &D,
ParsedAttributes &attrs,
BalancedDelimiterTracker &Tracker,
bool RequiresArg = false);
bool isFunctionDeclaratorIdentifierList();
void ParseFunctionDeclaratorIdentifierList(
Declarator &D,
SmallVector<DeclaratorChunk::ParamInfo, 16> &ParamInfo);
void ParseParameterDeclarationClause(
Declarator &D,
ParsedAttributes &attrs,
SmallVector<DeclaratorChunk::ParamInfo, 16> &ParamInfo,
SourceLocation &EllipsisLoc);
void ParseBracketDeclarator(Declarator &D);
//===--------------------------------------------------------------------===//
// C++ 7: Declarations [dcl.dcl]
bool isCXX0XAttributeSpecifier(bool FullLookahead = false,
tok::TokenKind *After = 0);
Decl *ParseNamespace(unsigned Context, SourceLocation &DeclEnd,
SourceLocation InlineLoc = SourceLocation());
void ParseInnerNamespace(std::vector<SourceLocation>& IdentLoc,
std::vector<IdentifierInfo*>& Ident,
std::vector<SourceLocation>& NamespaceLoc,
unsigned int index, SourceLocation& InlineLoc,
ParsedAttributes& attrs,
BalancedDelimiterTracker &Tracker);
Decl *ParseLinkage(ParsingDeclSpec &DS, unsigned Context);
Decl *ParseUsingDirectiveOrDeclaration(unsigned Context,
const ParsedTemplateInfo &TemplateInfo,
SourceLocation &DeclEnd,
ParsedAttributesWithRange &attrs,
Decl **OwnedType = 0);
Decl *ParseUsingDirective(unsigned Context,
SourceLocation UsingLoc,
SourceLocation &DeclEnd,
ParsedAttributes &attrs);
Decl *ParseUsingDeclaration(unsigned Context,
const ParsedTemplateInfo &TemplateInfo,
SourceLocation UsingLoc,
SourceLocation &DeclEnd,
AccessSpecifier AS = AS_none,
Decl **OwnedType = 0);
Decl *ParseStaticAssertDeclaration(SourceLocation &DeclEnd);
Decl *ParseNamespaceAlias(SourceLocation NamespaceLoc,
SourceLocation AliasLoc, IdentifierInfo *Alias,
SourceLocation &DeclEnd);
//===--------------------------------------------------------------------===//
// C++ 9: classes [class] and C structs/unions.
TypeResult ParseClassName(SourceLocation &EndLocation, CXXScopeSpec &SS);
void ParseClassSpecifier(tok::TokenKind TagTokKind, SourceLocation TagLoc,
DeclSpec &DS,
const ParsedTemplateInfo &TemplateInfo = ParsedTemplateInfo(),
AccessSpecifier AS = AS_none,
bool SuppressDeclarations = false);
void ParseCXXMemberSpecification(SourceLocation StartLoc, unsigned TagType,
Decl *TagDecl);
ExprResult ParseCXXMemberInitializer(bool IsFunction,
SourceLocation &EqualLoc);
void ParseCXXClassMemberDeclaration(AccessSpecifier AS, AttributeList *Attr,
const ParsedTemplateInfo &TemplateInfo = ParsedTemplateInfo(),
ParsingDeclRAIIObject *DiagsFromTParams = 0);
void ParseConstructorInitializer(Decl *ConstructorDecl);
MemInitResult ParseMemInitializer(Decl *ConstructorDecl);
void HandleMemberFunctionDefaultArgs(Declarator& DeclaratorInfo,
Decl *ThisDecl);
//===--------------------------------------------------------------------===//
// C++ 10: Derived classes [class.derived]
void ParseBaseClause(Decl *ClassDecl);
BaseResult ParseBaseSpecifier(Decl *ClassDecl);
AccessSpecifier getAccessSpecifierIfPresent() const;
bool ParseUnqualifiedIdTemplateId(CXXScopeSpec &SS,
IdentifierInfo *Name,
SourceLocation NameLoc,
bool EnteringContext,
ParsedType ObjectType,
UnqualifiedId &Id,
bool AssumeTemplateId,
SourceLocation TemplateKWLoc);
bool ParseUnqualifiedIdOperator(CXXScopeSpec &SS, bool EnteringContext,
ParsedType ObjectType,
UnqualifiedId &Result);
bool ParseUnqualifiedId(CXXScopeSpec &SS, bool EnteringContext,
bool AllowDestructorName,
bool AllowConstructorName,
ParsedType ObjectType,
UnqualifiedId &Result);
//===--------------------------------------------------------------------===//
// C++ 14: Templates [temp]
// C++ 14.1: Template Parameters [temp.param]
Decl *ParseDeclarationStartingWithTemplate(unsigned Context,
SourceLocation &DeclEnd,
AccessSpecifier AS = AS_none,
AttributeList *AccessAttrs = 0);
Decl *ParseTemplateDeclarationOrSpecialization(unsigned Context,
SourceLocation &DeclEnd,
AccessSpecifier AS,
AttributeList *AccessAttrs);
Decl *ParseSingleDeclarationAfterTemplate(
unsigned Context,
const ParsedTemplateInfo &TemplateInfo,
ParsingDeclRAIIObject &DiagsFromParams,
SourceLocation &DeclEnd,
AccessSpecifier AS=AS_none,
AttributeList *AccessAttrs = 0);
bool ParseTemplateParameters(unsigned Depth,
SmallVectorImpl<Decl*> &TemplateParams,
SourceLocation &LAngleLoc,
SourceLocation &RAngleLoc);
bool ParseTemplateParameterList(unsigned Depth,
SmallVectorImpl<Decl*> &TemplateParams);
bool isStartOfTemplateTypeParameter();
Decl *ParseTemplateParameter(unsigned Depth, unsigned Position);
Decl *ParseTypeParameter(unsigned Depth, unsigned Position);
Decl *ParseTemplateTemplateParameter(unsigned Depth, unsigned Position);
Decl *ParseNonTypeTemplateParameter(unsigned Depth, unsigned Position);
// C++ 14.3: Template arguments [temp.arg]
typedef SmallVector<ParsedTemplateArgument, 16> TemplateArgList;
bool ParseTemplateIdAfterTemplateName(TemplateTy Template,
SourceLocation TemplateNameLoc,
const CXXScopeSpec &SS,
bool ConsumeLastToken,
SourceLocation &LAngleLoc,
TemplateArgList &TemplateArgs,
SourceLocation &RAngleLoc);
bool AnnotateTemplateIdToken(TemplateTy Template, TemplateNameKind TNK,
CXXScopeSpec &SS,
UnqualifiedId &TemplateName,
SourceLocation TemplateKWLoc = SourceLocation(),
bool AllowTypeAnnotation = true);
void AnnotateTemplateIdTokenAsType();
bool IsTemplateArgumentList(unsigned Skip = 0);
bool ParseTemplateArgumentList(TemplateArgList &TemplateArgs);
ParsedTemplateArgument ParseTemplateTemplateArgument();
ParsedTemplateArgument ParseTemplateArgument();
Decl *ParseExplicitInstantiation(SourceLocation ExternLoc,
SourceLocation TemplateLoc,
SourceLocation &DeclEnd);
//===--------------------------------------------------------------------===//
// Modules
DeclGroupPtrTy ParseModuleImport();
//===--------------------------------------------------------------------===//
// GNU G++: Type Traits [Type-Traits.html in the GCC manual]
ExprResult ParseUnaryTypeTrait();
ExprResult ParseBinaryTypeTrait();
//===--------------------------------------------------------------------===//
// Embarcadero: Arary and Expression Traits
ExprResult ParseArrayTypeTrait();
ExprResult ParseExpressionTrait();
//===--------------------------------------------------------------------===//
// Preprocessor code-completion pass-through
virtual void CodeCompleteDirective(bool InConditional);
virtual void CodeCompleteInConditionalExclusion();
virtual void CodeCompleteMacroName(bool IsDefinition);
virtual void CodeCompletePreprocessorExpression();
virtual void CodeCompleteMacroArgument(IdentifierInfo *Macro,
MacroInfo *MacroInfo,
unsigned ArgumentIndex);
virtual void CodeCompleteNaturalLanguage();
};
} // end namespace clang
#endif
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