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ENH: In cmSourceFile::GetLanguage use the file extension (if not ambiguous) to determine the language without requiring the source file to exist.

This commit is contained in:
Brad King 2008-04-29 14:17:42 -04:00
parent 19aafdb355
commit 3344ce9197
2 changed files with 34 additions and 4 deletions
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37
Source/cmSourceFile.cxx
View File

@ -46,10 +46,28 @@ std::string const& cmSourceFile::GetExtension() const
//----------------------------------------------------------------------------
const char* cmSourceFile::GetLanguage()
{
// Compute the final location of the file if necessary.
if(this->FullPath.empty())
// If the language was set explicitly by the user then use it.
if(const char* lang = this->GetProperty("LANGUAGE"))
{
this->GetFullPath();
return lang;
}
// Perform computation needed to get the language if necessary.
if(this->FullPath.empty() && this->Language.empty())
{
if(this->Location.ExtensionIsAmbiguous())
{
// Finalize the file location to get the extension and set the
// language.
this->GetFullPath();
}
else
{
// Use the known extension to get the language if possible.
std::string ext =
cmSystemTools::GetFilenameLastExtension(this->Location.GetName());
this->CheckLanguage(ext);
}
}
// Now try to determine the language.
@ -252,8 +270,19 @@ void cmSourceFile::CheckExtension()
}
// Try to identify the source file language from the extension.
if(this->Language.empty())
{
this->CheckLanguage(this->Extension);
}
}
//----------------------------------------------------------------------------
void cmSourceFile::CheckLanguage(std::string const& ext)
{
// Try to identify the source file language from the extension.
cmMakefile* mf = this->Location.GetMakefile();
cmGlobalGenerator* gg = mf->GetLocalGenerator()->GetGlobalGenerator();
if(const char* l = gg->GetLanguageFromExtension(this->Extension.c_str()))
if(const char* l = gg->GetLanguageFromExtension(ext.c_str()))
{
this->Language = l;
}

1
Source/cmSourceFile.h
View File

@ -116,6 +116,7 @@ private:
bool FindFullPath();
bool TryFullPath(const char* tryPath, const char* ext);
void CheckExtension();
void CheckLanguage(std::string const& ext);
std::vector<std::string> Depends;
};