PPExpressions.cpp File Reference

#include "clang/Lex/Preprocessor.h"
#include "clang/Basic/TargetInfo.h"
#include "clang/Lex/CodeCompletionHandler.h"
#include "clang/Lex/LexDiagnostic.h"
#include "clang/Lex/LiteralSupport.h"
#include "clang/Lex/MacroInfo.h"
#include "llvm/ADT/APSInt.h"
#include "llvm/Support/ErrorHandling.h"
#include "llvm/Support/SaveAndRestore.h"

Include dependency graph for PPExpressions.cpp:

Go to the source code of this file.

Classes
struct	DefinedTracker
Functions
static bool	EvaluateDirectiveSubExpr (PPValue &LHS, unsigned MinPrec, Token &PeekTok, bool ValueLive, Preprocessor &PP)
static bool	EvaluateDefined (PPValue &Result, Token &PeekTok, DefinedTracker &DT, bool ValueLive, Preprocessor &PP)
	EvaluateDefined - Process a 'defined(sym)' expression.
static bool	EvaluateValue (PPValue &Result, Token &PeekTok, DefinedTracker &DT, bool ValueLive, Preprocessor &PP)
static unsigned	getPrecedence (tok::TokenKind Kind)

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Function Documentation

static bool EvaluateDefined	(	PPValue &	Result,
		Token &	PeekTok,
		DefinedTracker &	DT,
		bool	ValueLive,
		Preprocessor &	PP
	)		[static]

EvaluateDefined - Process a 'defined(sym)' expression.

Definition at line 82 of file PPExpressions.cpp.

References clang::Preprocessor::CheckMacroName(), clang::CodeCompletionHandler::CodeCompleteMacroName(), DefinedTracker::DefinedMacro, clang::Preprocessor::Diag(), clang::Preprocessor::getCodeCompletionHandler(), clang::Token::getIdentifierInfo(), clang::Token::getLocation(), clang::Preprocessor::getMacroDirective(), clang::MacroDirective::getMacroInfo(), clang::Preprocessor::getPPCallbacks(), clang::IdentifierInfo::hasMacroDefinition(), clang::Token::is(), clang::Token::isNot(), clang::SourceLocation::isValid(), clang::Preprocessor::LexNonComment(), clang::Preprocessor::LexUnexpandedNonComment(), clang::Preprocessor::markMacroAsUsed(), clang::MU_Other, clang::Preprocessor::setCodeCompletionReached(), DefinedTracker::State, and DefinedTracker::TheMacro.

Referenced by EvaluateValue().

static bool EvaluateDirectiveSubExpr	(	PPValue &	LHS,
		unsigned	MinPrec,
		Token &	PeekTok,
		bool	ValueLive,
		Preprocessor &	PP
	)		[static]

EvaluateDirectiveSubExpr - Evaluate the subexpression whose first token is PeekTok, and whose precedence is PeekPrec. This returns the result in LHS.

If ValueLive is false, then this value is being evaluated in a context where the result is not used. As such, avoid diagnostics that relate to evaluation, such as division by zero warnings.

Definition at line 460 of file PPExpressions.cpp.

References clang::Preprocessor::Diag(), EvaluateValue(), clang::Token::getKind(), clang::Preprocessor::getLangOpts(), clang::Token::getLocation(), getPrecedence(), clang::Token::isNot(), and clang::Preprocessor::LexNonComment().

Referenced by EvaluateValue().

static bool EvaluateValue	(	PPValue &	Result,
		Token &	PeekTok,
		DefinedTracker &	DT,
		bool	ValueLive,
		Preprocessor &	PP
	)		[static]

EvaluateValue - Evaluate the token PeekTok (and any others needed) and return the computed value in Result. Return true if there was an error parsing. This function also returns information about the form of the expression in DT. See above for information on what DT means.

If ValueLive is false, then this value is being evaluated in a context where the result is not used. As such, avoid diagnostics that relate to evaluation.

Definition at line 169 of file PPExpressions.cpp.

References clang::CodeCompletionHandler::CodeCompletePreprocessorExpression(), DefinedTracker::DefinedMacro, clang::Preprocessor::Diag(), EvaluateDefined(), EvaluateDirectiveSubExpr(), clang::TargetInfo::getChar16Width(), clang::TargetInfo::getChar32Width(), clang::TargetInfo::getCharWidth(), clang::Preprocessor::getCodeCompletionHandler(), clang::Token::getIdentifierInfo(), clang::TargetInfo::getIntWidth(), clang::Token::getKind(), clang::Preprocessor::getLangOpts(), clang::Token::getLocation(), clang::Preprocessor::getSpelling(), clang::Preprocessor::getTargetInfo(), clang::TargetInfo::getWCharWidth(), clang::Token::hasUDSuffix(), clang::Token::is(), clang::Token::isNot(), clang::Preprocessor::LexNonComment(), DefinedTracker::NotDefinedMacro, clang::Preprocessor::setCodeCompletionReached(), DefinedTracker::State, and Unknown.

Referenced by EvaluateDirectiveSubExpr().

static unsigned getPrecedence

(

tok::TokenKind

Kind

)

[static]

getPrecedence - Return the precedence of the specified binary operator token. This returns: ~0 - Invalid token. 14 -> 3 - various operators. 0 - 'eod' or ')'

Definition at line 424 of file PPExpressions.cpp.

Referenced by EvaluateDirectiveSubExpr().