void
PreProcessor::applyMacro(const String &ident, const ref<MacroDef> ¯o)
{
assert(tokenit.is(_IDENT));
DBG("apply macro: %s", ident.c_str());
if (macro->params.empty()) {
tokenit.erase(1);//erase identifier
tokenit.insert(macro->tokens);
} else {
TokenIterator tag = tokenit;
tokenit.next();
//get caller params
if (tokenit.is(_LPAREN)) {
tokenit.next();
List<List<Token> > caller_params;
if (!parseFunctionParams(caller_params)) {
ERROR("failed to parse function macro");
return;
}
if (macro->params.size() != caller_params.size()) {
ERROR("macro %s requres %d parameters",
ident.c_str(), macro->params.size());
return;
}
tag.erase(tokenit-tag);//erase function call tokens
//replace macro params
List<Token> replace_tokens = replaceMacroParams(macro->tokens, caller_params);
tokenit.insert(replace_tokens);
//tokenit.next();
}
}
}
bool MacroExpander::expandMacro(const Macro ¯o,
const Token &identifier,
std::vector<Token> *replacements)
{
replacements->clear();
// In the case of an object-like macro, the replacement list gets its location
// from the identifier, but in the case of a function-like macro, the replacement
// list gets its location from the closing parenthesis of the macro invocation.
// This is tested by dEQP-GLES3.functional.shaders.preprocessor.predefined_macros.*
SourceLocation replacementLocation = identifier.location;
if (macro.type == Macro::kTypeObj)
{
replacements->assign(macro.replacements.begin(),
macro.replacements.end());
if (macro.predefined)
{
const char kLine[] = "__LINE__";
const char kFile[] = "__FILE__";
ASSERT(replacements->size() == 1);
Token& repl = replacements->front();
if (macro.name == kLine)
{
repl.text = ToString(identifier.location.line);
}
else if (macro.name == kFile)
{
repl.text = ToString(identifier.location.file);
}
}
}
else
{
ASSERT(macro.type == Macro::kTypeFunc);
std::vector<MacroArg> args;
args.reserve(macro.parameters.size());
if (!collectMacroArgs(macro, identifier, &args, &replacementLocation))
return false;
replaceMacroParams(macro, args, replacements);
}
for (std::size_t i = 0; i < replacements->size(); ++i)
{
Token& repl = replacements->at(i);
if (i == 0)
{
// The first token in the replacement list inherits the padding
// properties of the identifier token.
repl.setAtStartOfLine(identifier.atStartOfLine());
repl.setHasLeadingSpace(identifier.hasLeadingSpace());
}
repl.location = replacementLocation;
}
return true;
}
bool MacroExpander::expandMacro(const Macro ¯o,
const Token &identifier,
std::vector<Token> *replacements)
{
replacements->clear();
if (macro.type == Macro::kTypeObj)
{
replacements->assign(macro.replacements.begin(),
macro.replacements.end());
if (macro.predefined)
{
const char kLine[] = "__LINE__";
const char kFile[] = "__FILE__";
assert(replacements->size() == 1);
Token& repl = replacements->front();
if (macro.name == kLine)
{
std::ostringstream stream;
stream << identifier.location.line;
repl.text = stream.str();
}
else if (macro.name == kFile)
{
std::ostringstream stream;
stream << identifier.location.file;
repl.text = stream.str();
}
}
}
else
{
assert(macro.type == Macro::kTypeFunc);
std::vector<MacroArg> args;
args.reserve(macro.parameters.size());
if (!collectMacroArgs(macro, identifier, &args))
return false;
replaceMacroParams(macro, args, replacements);
}
for (std::size_t i = 0; i < replacements->size(); ++i)
{
Token& repl = replacements->at(i);
if (i == 0)
{
// The first token in the replacement list inherits the padding
// properties of the identifier token.
repl.setAtStartOfLine(identifier.atStartOfLine());
repl.setHasLeadingSpace(identifier.hasLeadingSpace());
}
repl.location = identifier.location;
}
return true;
}
