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/* Distributed under the OSI-approved BSD 3-Clause License. See accompanying
file Copyright.txt or https://cmake.org/licensing for details. */
#ifndef cmGeneratorExpressionEvaluator_h
#define cmGeneratorExpressionEvaluator_h
#include "cmConfigure.h" // IWYU pragma: keep
#include <cstddef>
#include <string>
#include <utility>
#include <vector>
struct cmGeneratorExpressionContext;
struct cmGeneratorExpressionDAGChecker;
struct cmGeneratorExpressionNode;
struct cmGeneratorExpressionEvaluator
{
cmGeneratorExpressionEvaluator() = default;
virtual ~cmGeneratorExpressionEvaluator() = default;
cmGeneratorExpressionEvaluator(cmGeneratorExpressionEvaluator const&) =
delete;
cmGeneratorExpressionEvaluator& operator=(
cmGeneratorExpressionEvaluator const&) = delete;
enum Type
{
Text,
Generator
};
virtual Type GetType() const = 0;
virtual std::string Evaluate(cmGeneratorExpressionContext* context,
cmGeneratorExpressionDAGChecker*) const = 0;
};
struct TextContent : public cmGeneratorExpressionEvaluator
{
TextContent(const char* start, size_t length)
: Content(start)
, Length(length)
{
}
std::string Evaluate(cmGeneratorExpressionContext*,
cmGeneratorExpressionDAGChecker*) const override
{
return std::string(this->Content, this->Length);
}
Type GetType() const override
{
return cmGeneratorExpressionEvaluator::Text;
}
void Extend(size_t length) { this->Length += length; }
size_t GetLength() { return this->Length; }
private:
const char* Content;
size_t Length;
};
struct GeneratorExpressionContent : public cmGeneratorExpressionEvaluator
{
GeneratorExpressionContent(const char* startContent, size_t length);
void SetIdentifier(std::vector<cmGeneratorExpressionEvaluator*> identifier)
{
this->IdentifierChildren = std::move(identifier);
}
void SetParameters(
std::vector<std::vector<cmGeneratorExpressionEvaluator*>> parameters)
{
this->ParamChildren = std::move(parameters);
}
Type GetType() const override
{
return cmGeneratorExpressionEvaluator::Generator;
}
std::string Evaluate(cmGeneratorExpressionContext* context,
cmGeneratorExpressionDAGChecker*) const override;
std::string GetOriginalExpression() const;
~GeneratorExpressionContent() override;
private:
std::string EvaluateParameters(const cmGeneratorExpressionNode* node,
const std::string& identifier,
cmGeneratorExpressionContext* context,
cmGeneratorExpressionDAGChecker* dagChecker,
std::vector<std::string>& parameters) const;
std::string ProcessArbitraryContent(
const cmGeneratorExpressionNode* node, const std::string& identifier,
cmGeneratorExpressionContext* context,
cmGeneratorExpressionDAGChecker* dagChecker,
std::vector<std::vector<cmGeneratorExpressionEvaluator*>>::const_iterator
pit) const;
private:
std::vector<cmGeneratorExpressionEvaluator*> IdentifierChildren;
std::vector<std::vector<cmGeneratorExpressionEvaluator*>> ParamChildren;
const char* StartContent;
size_t ContentLength;
};
#endif
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