bdca8b01d2
#pragma once is a widely supported compiler pragma, even though it is not part of the C++ standard. Many of the issues keeping #pragma once from being standardized (distributed filesystems, build farms, hard links, etc.) do not apply to CMake - it is easy to build CMake on a single machine. CMake also does not install any header files which can be consumed by other projects (though cmCPluginAPI.h has been deliberately omitted from this conversion in case anyone is still using it.) Finally, #pragma once has been required to build CMake since at least August 2017 (7f29bbe6enabled server mode unconditionally, which had been using #pragma once since September 2016 (b13d3e0d)). The fact that we now require C++11 filters out old compilers, and it is unlikely that there is a compiler which supports C++11 but does not support #pragma once.
89 lines
3.2 KiB
C++
89 lines
3.2 KiB
C++
/* Distributed under the OSI-approved BSD 3-Clause License. See accompanying
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file Copyright.txt or https://cmake.org/licensing for details. */
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#pragma once
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#include "cmConfigure.h" // IWYU pragma: keep
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#include <list>
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#include <string>
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#include <vector>
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#include "cmExpandedCommandArgument.h"
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#include "cmListFileCache.h"
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#include "cmMessageType.h"
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#include "cmPolicies.h"
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class cmMakefile;
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class cmConditionEvaluator
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{
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public:
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using cmArgumentList = std::list<cmExpandedCommandArgument>;
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cmConditionEvaluator(cmMakefile& makefile, cmListFileContext context,
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cmListFileBacktrace bt);
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// this is a shared function for both If and Else to determine if the
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// arguments were valid, and if so, was the response true. If there is
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// an error, the errorString will be set.
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bool IsTrue(const std::vector<cmExpandedCommandArgument>& args,
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std::string& errorString, MessageType& status);
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private:
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// Filter the given variable definition based on policy CMP0054.
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const char* GetDefinitionIfUnquoted(
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const cmExpandedCommandArgument& argument) const;
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const char* GetVariableOrString(
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const cmExpandedCommandArgument& argument) const;
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bool IsKeyword(std::string const& keyword,
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cmExpandedCommandArgument& argument) const;
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bool GetBooleanValue(cmExpandedCommandArgument& arg) const;
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bool GetBooleanValueOld(cmExpandedCommandArgument const& arg,
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bool one) const;
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bool GetBooleanValueWithAutoDereference(cmExpandedCommandArgument& newArg,
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std::string& errorString,
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MessageType& status,
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bool oneArg = false) const;
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void IncrementArguments(cmArgumentList& newArgs,
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cmArgumentList::iterator& argP1,
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cmArgumentList::iterator& argP2) const;
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void HandlePredicate(bool value, int& reducible,
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cmArgumentList::iterator& arg, cmArgumentList& newArgs,
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cmArgumentList::iterator& argP1,
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cmArgumentList::iterator& argP2) const;
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void HandleBinaryOp(bool value, int& reducible,
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cmArgumentList::iterator& arg, cmArgumentList& newArgs,
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cmArgumentList::iterator& argP1,
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cmArgumentList::iterator& argP2);
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bool HandleLevel0(cmArgumentList& newArgs, std::string& errorString,
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MessageType& status);
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bool HandleLevel1(cmArgumentList& newArgs, std::string&, MessageType&);
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bool HandleLevel2(cmArgumentList& newArgs, std::string& errorString,
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MessageType& status);
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bool HandleLevel3(cmArgumentList& newArgs, std::string& errorString,
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MessageType& status);
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bool HandleLevel4(cmArgumentList& newArgs, std::string& errorString,
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MessageType& status);
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cmMakefile& Makefile;
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cmListFileContext ExecutionContext;
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cmListFileBacktrace Backtrace;
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cmPolicies::PolicyStatus Policy12Status;
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cmPolicies::PolicyStatus Policy54Status;
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cmPolicies::PolicyStatus Policy57Status;
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cmPolicies::PolicyStatus Policy64Status;
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};
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