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pattern: Added parameter packs

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WerWolv
2022-01-30 15:18:45 +01:00
parent 111c4b71aa
commit 69bd438fe1
7 changed files with 115 additions and 38 deletions
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38
lib/libimhex/source/pattern_language/parser.cpp
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@@ -431,31 +431,37 @@ namespace hex::pl {
ASTNode *Parser::parseFunctionDefinition() {
const auto &functionName = getValue<Token::Identifier>(-2).get();
std::vector<std::pair<std::string, ASTNode *>> params;
std::optional<std::string> parameterPack;
// Parse parameter list
bool hasParams = !peek(SEPARATOR_ROUNDBRACKETCLOSE);
u32 unnamedParamCount = 0;
while (hasParams) {
auto type = parseType(true);
if (MATCHES(sequence(VALUETYPE_AUTO, SEPARATOR_DOT, SEPARATOR_DOT, SEPARATOR_DOT, IDENTIFIER))) {
parameterPack = getValue<Token::Identifier>(-1).get();
if (MATCHES(sequence(IDENTIFIER)))
params.emplace_back(getValue<Token::Identifier>(-1).get(), type);
else {
params.emplace_back(std::to_string(unnamedParamCount), type);
unnamedParamCount++;
}
if (MATCHES(sequence(SEPARATOR_COMMA)))
throwParseError("parameter pack can only appear at end of parameter list");
if (!MATCHES(sequence(SEPARATOR_COMMA))) {
if (MATCHES(sequence(SEPARATOR_ROUNDBRACKETCLOSE)))
break;
} else {
auto type = parseType(true);
if (MATCHES(sequence(IDENTIFIER)))
params.emplace_back(getValue<Token::Identifier>(-1).get(), type);
else {
params.emplace_back(std::to_string(unnamedParamCount), type);
unnamedParamCount++;
}
if (!MATCHES(sequence(SEPARATOR_COMMA))) {
break;
else
throwParseError("expected closing ')' after parameter list");
}
}
}
if (!hasParams) {
if (!MATCHES(sequence(SEPARATOR_ROUNDBRACKETCLOSE)))
throwParseError("expected closing ')' after parameter list");
}
if (!MATCHES(sequence(SEPARATOR_ROUNDBRACKETCLOSE)))
throwParseError("expected closing ')' after parameter list");
if (!MATCHES(sequence(SEPARATOR_CURLYBRACKETOPEN)))
throwParseError("expected opening '{' after function definition");
@@ -473,7 +479,7 @@ namespace hex::pl {
}
bodyCleanup.release();
return create(new ASTNodeFunctionDefinition(getNamespacePrefixedName(functionName), params, body));
return create(new ASTNodeFunctionDefinition(getNamespacePrefixedName(functionName), params, body, parameterPack));
}
ASTNode *Parser::parseFunctionVariableDecl() {