CMake/Source/cmConditionEvaluator.h
Stephen Kelly d6a03b475e cmIfCommand: Issue CMP0054 warning with appropriate context. (#15802)
Commit v3.4.0-rc1~494^2~4 (cmMakefile: Add API for elseif to create
backtrace., 2015-05-29) removed the use of cmMakefileCall to push/pop
execution context in favor of a new way to create backtraces.

However, a call to cmMakefile::GetExecutionContext is still invoked to
issue a contextual CMP0054 warning through cmConditionEvaluator.  As
the elseif is not part of the call stack, this resulted in trying to
access an empty vector.

Avoid the attempt at getting execution context when evaluating elseif by
constructing a context and backtrace on behalf of the cmConditionEvaluator
in all cases.
2015-10-20 23:40:12 +02:00

108 lines
3.4 KiB
C++

/*============================================================================
CMake - Cross Platform Makefile Generator
Copyright 2014 Kitware, Inc., Insight Software Consortium
Distributed under the OSI-approved BSD License (the "License");
see accompanying file Copyright.txt for details.
This software is distributed WITHOUT ANY WARRANTY; without even the
implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
See the License for more information.
============================================================================*/
#ifndef cmConditionEvaluator_h
#define cmConditionEvaluator_h
#include "cmCommand.h"
#include "cmExpandedCommandArgument.h"
#include <list>
class cmConditionEvaluator
{
public:
typedef std::list<cmExpandedCommandArgument> cmArgumentList;
cmConditionEvaluator(cmMakefile& makefile,
cmListFileContext const& context,
cmListFileBacktrace const& bt);
// this is a shared function for both If and Else to determine if the
// arguments were valid, and if so, was the response true. If there is
// an error, the errorString will be set.
bool IsTrue(const std::vector<cmExpandedCommandArgument> &args,
std::string &errorString,
cmake::MessageType &status);
static cmListFileContext GetConditionContext(cmMakefile* mf,
const cmCommandContext& command, std::string const& filePath);
private:
// Filter the given variable definition based on policy CMP0054.
const char* GetDefinitionIfUnquoted(
const cmExpandedCommandArgument& argument) const;
const char* GetVariableOrString(
const cmExpandedCommandArgument& argument) const;
bool IsKeyword(std::string const& keyword,
cmExpandedCommandArgument& argument) const;
bool GetBooleanValue(
cmExpandedCommandArgument& arg) const;
bool GetBooleanValueOld(
cmExpandedCommandArgument const& arg, bool one) const;
bool GetBooleanValueWithAutoDereference(
cmExpandedCommandArgument &newArg,
std::string &errorString,
cmake::MessageType &status,
bool oneArg = false) const;
void IncrementArguments(
cmArgumentList &newArgs,
cmArgumentList::iterator &argP1,
cmArgumentList::iterator &argP2) const;
void HandlePredicate(bool value, int &reducible,
cmArgumentList::iterator &arg,
cmArgumentList &newArgs,
cmArgumentList::iterator &argP1,
cmArgumentList::iterator &argP2) const;
void HandleBinaryOp(bool value, int &reducible,
cmArgumentList::iterator &arg,
cmArgumentList &newArgs,
cmArgumentList::iterator &argP1,
cmArgumentList::iterator &argP2);
bool HandleLevel0(cmArgumentList &newArgs,
std::string &errorString,
cmake::MessageType &status);
bool HandleLevel1(cmArgumentList &newArgs,
std::string &, cmake::MessageType &);
bool HandleLevel2(cmArgumentList &newArgs,
std::string &errorString,
cmake::MessageType &status);
bool HandleLevel3(cmArgumentList &newArgs,
std::string &errorString,
cmake::MessageType &status);
bool HandleLevel4(cmArgumentList &newArgs,
std::string &errorString,
cmake::MessageType &status);
cmMakefile& Makefile;
cmListFileContext ExecutionContext;
cmListFileBacktrace Backtrace;
cmPolicies::PolicyStatus Policy12Status;
cmPolicies::PolicyStatus Policy54Status;
cmPolicies::PolicyStatus Policy57Status;
cmPolicies::PolicyStatus Policy64Status;
};
#endif