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PP: #include: simplify the different paths out of #include.

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- some paths didn't release 'res'
- token is always '\n' after proper acceptance of the directive itself,
  so no need to test it, change it to '\n', etc.
- assuming setCurrentColumn(0) is not needed unless there are header tokens,
  but not clear why it is ever needed

Note: much of the simplified code read as if the included header tokens had
actually been processed, versus queued up for processing; maybe that explains
some things.
This commit is contained in:
John Kessenich 2017-01-05 13:32:52 -07:00
parent 28d3133581
commit 1b1defd605
1 changed files with 28 additions and 23 deletions
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27
glslang/MachineIndependent/preprocessor/Pp.cpp
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@ -593,38 +593,43 @@ int TPpContext::CPPinclude(TPpToken* ppToken)
// Make a copy of the name because it will be overwritten by the next token scan.
const std::string filename = ppToken->name;
// See if the directive was well formed
token = scanToken(ppToken);
if (token != '\n') {
if (token == EndOfInput)
parseContext.ppError(ppToken->loc, "expected newline after header name:", "#include", "%s", filename.c_str());
else
parseContext.ppError(ppToken->loc, "extra content after header name:", "#include", "%s", filename.c_str());
} else {
TShader::Includer::IncludeResult* res = includer.include(filename.c_str(), includeType, currentSourceFile.c_str(), includeStack.size() + 1);
return token;
}
// Process well-formed directive
TShader::Includer::IncludeResult* res = includer.include(filename.c_str(), includeType, currentSourceFile.c_str(),
includeStack.size() + 1);
if (res && !res->file_name.empty()) {
if (res->file_data && res->file_length) {
// path for processing one or more tokens from an included header, hand off 'res'
const bool forNextLine = parseContext.lineDirectiveShouldSetNextLine();
std::ostringstream prologue;
std::ostringstream epilogue;
prologue << "#line " << forNextLine << " " << "\"" << res->file_name << "\"\n";
epilogue << (res->file_data[res->file_length - 1] == '\n'? "" : "\n") << "#line " << directiveLoc.line + forNextLine << " " << directiveLoc.getStringNameOrNum() << "\n";
epilogue << (res->file_data[res->file_length - 1] == '\n'? "" : "\n") <<
"#line " << directiveLoc.line + forNextLine << " " << directiveLoc.getStringNameOrNum() << "\n";
pushInput(new TokenizableIncludeFile(directiveLoc, prologue.str(), res, epilogue.str(), this));
}
// At EOF, there's no "current" location anymore.
if (token != EndOfInput)
parseContext.setCurrentColumn(0);
// Don't accidentally return EndOfInput, which will end all preprocessing.
return '\n';
} else {
// things are okay, but there is nothing to process
includer.releaseInclude(res);
}
} else {
// error path, clean up
std::string message =
res ? std::string(res->file_data, res->file_length)
: std::string("Could not process include directive");
parseContext.ppError(directiveLoc, message.c_str(), "#include", "for header name: %s", filename.c_str());
if (res) {
includer.releaseInclude(res);
}
}
}
return token;
}