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109 lines
2.6 KiB
109 lines
2.6 KiB
/* 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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#include "cmIncludeGuardCommand.h"
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#include "cmExecutionStatus.h"
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#include "cmMakefile.h"
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#include "cmStateDirectory.h"
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#include "cmStateSnapshot.h"
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#include "cmSystemTools.h"
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#include "cmake.h"
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namespace {
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enum IncludeGuardScope
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{
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VARIABLE,
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DIRECTORY,
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GLOBAL
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};
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std::string GetIncludeGuardVariableName(std::string const& filePath)
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{
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std::string result = "__INCGUARD_";
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#ifndef CMAKE_BOOTSTRAP
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result += cmSystemTools::ComputeStringMD5(filePath);
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#else
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result += cmSystemTools::MakeCidentifier(filePath);
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#endif
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result += "__";
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return result;
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}
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bool CheckIncludeGuardIsSet(cmMakefile* mf, std::string const& includeGuardVar)
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{
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if (mf->GetProperty(includeGuardVar)) {
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return true;
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}
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cmStateSnapshot dirSnapshot =
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mf->GetStateSnapshot().GetBuildsystemDirectoryParent();
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while (dirSnapshot.GetState()) {
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cmStateDirectory stateDir = dirSnapshot.GetDirectory();
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if (stateDir.GetProperty(includeGuardVar)) {
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return true;
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}
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dirSnapshot = dirSnapshot.GetBuildsystemDirectoryParent();
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}
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return false;
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}
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} // anonymous namespace
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// cmIncludeGuardCommand
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bool cmIncludeGuardCommand(std::vector<std::string> const& args,
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cmExecutionStatus& status)
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{
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if (args.size() > 1) {
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status.SetError(
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"given an invalid number of arguments. The command takes at "
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"most 1 argument.");
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return false;
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}
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IncludeGuardScope scope = VARIABLE;
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if (!args.empty()) {
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std::string const& arg = args[0];
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if (arg == "DIRECTORY") {
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scope = DIRECTORY;
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} else if (arg == "GLOBAL") {
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scope = GLOBAL;
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} else {
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status.SetError("given an invalid scope: " + arg);
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return false;
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}
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}
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std::string includeGuardVar = GetIncludeGuardVariableName(
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status.GetMakefile().GetDefinition("CMAKE_CURRENT_LIST_FILE"));
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cmMakefile* const mf = &status.GetMakefile();
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switch (scope) {
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case VARIABLE:
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if (mf->IsDefinitionSet(includeGuardVar)) {
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status.SetReturnInvoked();
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return true;
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}
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mf->AddDefinitionBool(includeGuardVar, true);
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break;
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case DIRECTORY:
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if (CheckIncludeGuardIsSet(mf, includeGuardVar)) {
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status.SetReturnInvoked();
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return true;
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}
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mf->SetProperty(includeGuardVar, "TRUE");
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break;
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case GLOBAL:
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cmake* const cm = mf->GetCMakeInstance();
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if (cm->GetProperty(includeGuardVar)) {
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status.SetReturnInvoked();
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return true;
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}
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cm->SetProperty(includeGuardVar, "TRUE");
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break;
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}
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return true;
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}
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