static Optional<std::pair<llvm::APSInt, Type>>
getIntegerConstantForMacroToken(ClangImporter::Implementation &impl,
DeclContext *DC,
const clang::Token &token) {
// Integer literal.
if (token.is(clang::tok::numeric_constant)) {
if (auto literal = parseNumericLiteral<clang::IntegerLiteral>(impl,token)) {
auto value = llvm::APSInt { literal->getValue(),
literal->getType()->isUnsignedIntegerType() };
auto type = impl.importType(literal->getType(),
ImportTypeKind::Value,
isInSystemModule(DC),
Bridgeability::None);
return {{ value, type }};
}
// Macro identifier.
} else if (token.is(clang::tok::identifier) &&
token.getIdentifierInfo()->hasMacroDefinition()) {
auto rawID = token.getIdentifierInfo();
auto definition = impl.getClangPreprocessor().getMacroDefinition(rawID);
if (!definition)
return None;
ClangNode macroNode;
const clang::MacroInfo *macroInfo;
if (definition.getModuleMacros().empty()) {
macroInfo = definition.getMacroInfo();
macroNode = macroInfo;
} else {
// Follow MacroDefinition::getMacroInfo in preferring the last ModuleMacro
// rather than the first.
const clang::ModuleMacro *moduleMacro =
definition.getModuleMacros().back();
macroInfo = moduleMacro->getMacroInfo();
macroNode = moduleMacro;
}
auto importedID = impl.getNameImporter().importMacroName(rawID, macroInfo);
(void)impl.importMacro(importedID, macroNode);
auto searcher = impl.ImportedMacroConstants.find(macroInfo);
if (searcher == impl.ImportedMacroConstants.end()) {
return None;
}
auto importedConstant = searcher->second;
if (!importedConstant.first.isInt()) {
return None;
}
return {{ importedConstant.first.getInt(), importedConstant.second }};
}
return None;
}
static Optional<std::pair<llvm::APSInt, Type>>
getIntegerConstantForMacroToken(ClangImporter::Implementation &impl,
DeclContext *DC,
const clang::Token &token) {
// Integer literal.
if (token.is(clang::tok::numeric_constant)) {
if (auto literal = parseNumericLiteral<clang::IntegerLiteral>(impl,token)) {
auto value = llvm::APSInt { literal->getValue(),
literal->getType()->isUnsignedIntegerType() };
auto type = impl.importType(literal->getType(),
ImportTypeKind::Value,
isInSystemModule(DC),
/*isFullyBridgeable*/false);
return {{ value, type }};
}
// Macro identifier.
} else if (token.is(clang::tok::identifier) &&
token.getIdentifierInfo()->hasMacroDefinition()) {
auto rawID = token.getIdentifierInfo();
auto macroInfo = impl.getClangPreprocessor().getMacroInfo(rawID);
auto importedID = impl.getNameImporter().importMacroName(rawID, macroInfo);
impl.importMacro(importedID, macroInfo);
auto searcher = impl.ImportedMacroConstants.find(macroInfo);
if (searcher == impl.ImportedMacroConstants.end()) {
return None;
}
auto importedConstant = searcher->second;
if (!importedConstant.first.isInt()) {
return None;
}
return {{ importedConstant.first.getInt(), importedConstant.second }};
}
return None;
}