diff options
Diffstat (limited to 'Source/cmIfCommand.cxx')
| -rw-r--r-- | Source/cmIfCommand.cxx | 166 |
1 files changed, 93 insertions, 73 deletions
diff --git a/Source/cmIfCommand.cxx b/Source/cmIfCommand.cxx index 5c8f07a..dfdbc86 100644 --- a/Source/cmIfCommand.cxx +++ b/Source/cmIfCommand.cxx @@ -213,84 +213,69 @@ bool cmIfCommand namespace { //========================================================================= - // returns true if succesfull, the resulting bool parsed is stored in result - bool GetBooleanValue(std::string &newArg, - cmMakefile *makefile, - bool &result, - std::string &errorString, - cmPolicies::PolicyStatus Policy12Status, - cmake::MessageType &status) + bool GetBooleanValue(std::string& arg, cmMakefile* mf) { - if (Policy12Status != cmPolicies::OLD && - Policy12Status != cmPolicies::WARN) - { - // please note IsOn(var) does not always equal !IsOff(var) - // that is why each is called - if (cmSystemTools::IsOn(newArg.c_str())) - { - result = true; - return true; - } - if (cmSystemTools::IsOff(newArg.c_str())) - { - result = false; - return true; - } - return false; - } - - // Old policy is more complex... - // 0 and 1 are very common, test for them first quickly - if (newArg == "0") + // Check basic constants. + if (arg == "0") { - result = false; - return true; + return false; } - if (newArg == "1") + if (arg == "1") { - result = true; - return true; + return true; } - // old behavior is to dereference the var - if (Policy12Status == cmPolicies::OLD) + // Check named constants. + if (cmSystemTools::IsOn(arg.c_str())) { - return false; + return true; + } + if (cmSystemTools::IsOff(arg.c_str())) + { + return false; } - // now test for values that may be the name of a variable - // warn if used - if (cmSystemTools::IsOn(newArg.c_str())) + // Check for numbers. + if(!arg.empty()) + { + char* end; + double d = strtod(arg.c_str(), &end); + if(*end == '\0') { - // only warn if the value would change - const char *def = makefile->GetDefinition(newArg.c_str()); - if (cmSystemTools::IsOff(def)) - { - cmPolicies* policies = makefile->GetPolicies(); - errorString = "A variable or argument named \"" - + newArg - + "\" appears in a conditional statement. " - + policies->GetPolicyWarning(cmPolicies::CMP0012); - status = cmake::AUTHOR_WARNING; - } - return false; + // The whole string is a number. Use C conversion to bool. + return d? true:false; } - if (cmSystemTools::IsOff(newArg.c_str())) + } + + // Check definition. + const char* def = mf->GetDefinition(arg.c_str()); + return !cmSystemTools::IsOff(def); + } + + //========================================================================= + // Boolean value behavior from CMake 2.6.4 and below. + bool GetBooleanValueOld(std::string const& arg, cmMakefile* mf, bool one) + { + if(one) + { + // Old IsTrue behavior for single argument. + if(arg == "0") + { return false; } + else if(arg == "1") + { return true; } + else + { return !cmSystemTools::IsOff(mf->GetDefinition(arg.c_str())); } + } + else + { + // Old GetVariableOrNumber behavior. + const char* def = mf->GetDefinition(arg.c_str()); + if(!def && atoi(arg.c_str())) { - // only warn if the value would change - const char *def = makefile->GetDefinition(newArg.c_str()); - if (!cmSystemTools::IsOff(def)) - { - cmPolicies* policies = makefile->GetPolicies(); - errorString = "A variable or argument named \"" - + newArg - + "\" appears in a conditional statement. " - + policies->GetPolicyWarning(cmPolicies::CMP0012); - status = cmake::AUTHOR_WARNING; - } - return false; + def = arg.c_str(); } - return false; + return !cmSystemTools::IsOff(def); + } } //========================================================================= @@ -300,16 +285,51 @@ namespace cmMakefile *makefile, std::string &errorString, cmPolicies::PolicyStatus Policy12Status, - cmake::MessageType &status) + cmake::MessageType &status, + bool oneArg = false) { - bool result = false; - if (GetBooleanValue(newArg, makefile, result, - errorString, Policy12Status, status)) + // Use the policy if it is set. + if (Policy12Status == cmPolicies::NEW) { - return result; + return GetBooleanValue(newArg, makefile); } - const char *def = makefile->GetDefinition(newArg.c_str()); - return !cmSystemTools::IsOff(def); + else if (Policy12Status == cmPolicies::OLD) + { + return GetBooleanValueOld(newArg, makefile, oneArg); + } + + // Check policy only if old and new results differ. + bool newResult = GetBooleanValue(newArg, makefile); + bool oldResult = GetBooleanValueOld(newArg, makefile, oneArg); + if(newResult != oldResult) + { + switch(Policy12Status) + { + case cmPolicies::WARN: + { + cmPolicies* policies = makefile->GetPolicies(); + errorString = "An argument named \"" + newArg + + "\" appears in a conditional statement. " + + policies->GetPolicyWarning(cmPolicies::CMP0012); + status = cmake::AUTHOR_WARNING; + } + case cmPolicies::OLD: + return oldResult; + break; + case cmPolicies::REQUIRED_IF_USED: + case cmPolicies::REQUIRED_ALWAYS: + { + cmPolicies* policies = makefile->GetPolicies(); + errorString = "An argument named \"" + newArg + + "\" appears in a conditional statement. " + + policies->GetRequiredPolicyError(cmPolicies::CMP0012); + status = cmake::FATAL_ERROR; + } + case cmPolicies::NEW: + break; + } + } + return newResult; } //========================================================================= @@ -898,7 +918,7 @@ bool cmIfCommand::IsTrue(const std::vector<std::string> &args, makefile, errorString, Policy12Status, - status); + status, true); } //========================================================================= |