CMake/Source/cmGeneratorExpressionNode.h

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/*============================================================================
CMake - Cross Platform Makefile Generator
Copyright 2012 Stephen Kelly <steveire@gmail.com>
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 cmGeneratorExpressionNode_h
#define cmGeneratorExpressionNode_h
#include <cmConfigure.h> // IWYU pragma: keep
#include <string>
#include <vector>
class cmGeneratorTarget;
class cmLocalGenerator;
struct GeneratorExpressionContent;
struct cmGeneratorExpressionContext;
struct cmGeneratorExpressionDAGChecker;
struct cmGeneratorExpressionNode
{
enum
{
DynamicParameters = 0,
OneOrMoreParameters = -1,
OneOrZeroParameters = -2
};
virtual ~cmGeneratorExpressionNode() {}
virtual bool GeneratesContent() const { return true; }
virtual bool RequiresLiteralInput() const { return false; }
virtual bool AcceptsArbitraryContentParameter() const { return false; }
virtual int NumExpectedParameters() const { return 1; }
virtual std::string Evaluate(
const std::vector<std::string>& parameters,
cmGeneratorExpressionContext* context,
const GeneratorExpressionContent* content,
cmGeneratorExpressionDAGChecker* dagChecker) const = 0;
static std::string EvaluateDependentExpression(
std::string const& prop, cmLocalGenerator* lg,
cmGeneratorExpressionContext* context, const cmGeneratorTarget* headTarget,
const cmGeneratorTarget* currentTarget,
cmGeneratorExpressionDAGChecker* dagChecker);
static const cmGeneratorExpressionNode* GetNode(
const std::string& identifier);
};
void reportError(cmGeneratorExpressionContext* context,
const std::string& expr, const std::string& result);
#endif