138 lines
4.2 KiB
C++
138 lines
4.2 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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#include "cmWhileCommand.h"
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#include "cmConditionEvaluator.h"
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cmWhileFunctionBlocker::cmWhileFunctionBlocker(cmMakefile* mf)
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: Makefile(mf)
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, Depth(0)
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{
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this->Makefile->PushLoopBlock();
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}
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cmWhileFunctionBlocker::~cmWhileFunctionBlocker()
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{
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this->Makefile->PopLoopBlock();
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}
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bool cmWhileFunctionBlocker::IsFunctionBlocked(const cmListFileFunction& lff,
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cmMakefile& mf,
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cmExecutionStatus& inStatus)
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{
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// at end of for each execute recorded commands
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if (!cmSystemTools::Strucmp(lff.Name.c_str(), "while")) {
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// record the number of while commands past this one
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this->Depth++;
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} else if (!cmSystemTools::Strucmp(lff.Name.c_str(), "endwhile")) {
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// if this is the endwhile for this while loop then execute
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if (!this->Depth) {
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// Remove the function blocker for this scope or bail.
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CM_AUTO_PTR<cmFunctionBlocker> fb(mf.RemoveFunctionBlocker(this, lff));
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if (!fb.get()) {
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return false;
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}
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std::string errorString;
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std::vector<cmExpandedCommandArgument> expandedArguments;
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mf.ExpandArguments(this->Args, expandedArguments);
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cmake::MessageType messageType;
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cmListFileContext execContext = this->GetStartingContext();
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cmCommandContext commandContext;
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commandContext.Line = execContext.Line;
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commandContext.Name = execContext.Name;
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cmConditionEvaluator conditionEvaluator(mf, this->GetStartingContext(),
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mf.GetBacktrace(commandContext));
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bool isTrue =
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conditionEvaluator.IsTrue(expandedArguments, errorString, messageType);
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while (isTrue) {
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if (!errorString.empty()) {
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std::string err = "had incorrect arguments: ";
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unsigned int i;
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for (i = 0; i < this->Args.size(); ++i) {
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err += (this->Args[i].Delim ? "\"" : "");
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err += this->Args[i].Value;
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err += (this->Args[i].Delim ? "\"" : "");
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err += " ";
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}
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err += "(";
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err += errorString;
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err += ").";
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mf.IssueMessage(messageType, err);
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if (messageType == cmake::FATAL_ERROR) {
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cmSystemTools::SetFatalErrorOccured();
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return true;
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}
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}
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// Invoke all the functions that were collected in the block.
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for (unsigned int c = 0; c < this->Functions.size(); ++c) {
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cmExecutionStatus status;
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mf.ExecuteCommand(this->Functions[c], status);
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if (status.GetReturnInvoked()) {
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inStatus.SetReturnInvoked(true);
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return true;
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}
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if (status.GetBreakInvoked()) {
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return true;
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}
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if (status.GetContinueInvoked()) {
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break;
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}
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if (cmSystemTools::GetFatalErrorOccured()) {
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return true;
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}
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}
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expandedArguments.clear();
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mf.ExpandArguments(this->Args, expandedArguments);
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isTrue = conditionEvaluator.IsTrue(expandedArguments, errorString,
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messageType);
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}
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return true;
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}
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// decrement for each nested while that ends
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this->Depth--;
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}
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// record the command
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this->Functions.push_back(lff);
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// always return true
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return true;
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}
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bool cmWhileFunctionBlocker::ShouldRemove(const cmListFileFunction& lff,
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cmMakefile&)
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{
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if (!cmSystemTools::Strucmp(lff.Name.c_str(), "endwhile")) {
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// if the endwhile has arguments, then make sure
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// they match the arguments of the matching while
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if (lff.Arguments.empty() || lff.Arguments == this->Args) {
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return true;
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}
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}
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return false;
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}
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bool cmWhileCommand::InvokeInitialPass(
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const std::vector<cmListFileArgument>& args, cmExecutionStatus&)
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{
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if (args.empty()) {
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this->SetError("called with incorrect number of arguments");
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return false;
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}
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// create a function blocker
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cmWhileFunctionBlocker* f = new cmWhileFunctionBlocker(this->Makefile);
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f->Args = args;
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this->Makefile->AddFunctionBlocker(f);
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return true;
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}
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