47 lines
1.3 KiB
C++
47 lines
1.3 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 "cmMathCommand.h"
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#include "cmExprParserHelper.h"
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bool cmMathCommand::InitialPass(std::vector<std::string> const& args,
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cmExecutionStatus&)
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{
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if (args.empty()) {
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this->SetError("must be called with at least one argument.");
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return false;
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}
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const std::string& subCommand = args[0];
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if (subCommand == "EXPR") {
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return this->HandleExprCommand(args);
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}
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std::string e = "does not recognize sub-command " + subCommand;
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this->SetError(e);
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return false;
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}
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bool cmMathCommand::HandleExprCommand(std::vector<std::string> const& args)
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{
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if (args.size() != 3) {
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this->SetError("EXPR called with incorrect arguments.");
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return false;
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}
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const std::string& outputVariable = args[1];
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const std::string& expression = args[2];
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cmExprParserHelper helper;
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if (!helper.ParseString(expression.c_str(), 0)) {
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std::string e = "cannot parse the expression: \"" + expression + "\": ";
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e += helper.GetError();
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this->SetError(e);
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return false;
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}
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char buffer[1024];
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sprintf(buffer, "%d", helper.GetResult());
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this->Makefile->AddDefinition(outputVariable, buffer);
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return true;
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}
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