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patterns: Unified expression body parsing

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WerWolv
2021-09-26 18:27:18 +02:00
parent ae9f4fa876
commit 7da8a5b1d8
3 changed files with 36 additions and 24 deletions
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54
plugins/libimhex/source/pattern_language/parser.cpp
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@@ -533,6 +533,27 @@ namespace hex::pl {
return create(new ASTNodeReturnStatement(this->parseMathematicalExpression()));
}
std::vector<ASTNode*> Parser::parseStatementBody() {
std::vector<ASTNode*> body;
auto bodyCleanup = SCOPE_GUARD {
for (auto &node : body)
delete node;
};
if (MATCHES(sequence(SEPARATOR_CURLYBRACKETOPEN))) {
while (!MATCHES(sequence(SEPARATOR_CURLYBRACKETCLOSE))) {
body.push_back(parseFunctionStatement());
}
} else {
body.push_back(parseFunctionStatement());
}
bodyCleanup.release();
return body;
}
ASTNode* Parser::parseFunctionConditional() {
auto condition = parseMathematicalExpression();
std::vector<ASTNode*> trueBody, falseBody;
@@ -545,22 +566,13 @@ namespace hex::pl {
delete statement;
};
if (MATCHES(sequence(SEPARATOR_ROUNDBRACKETCLOSE, SEPARATOR_CURLYBRACKETOPEN))) {
while (!MATCHES(sequence(SEPARATOR_CURLYBRACKETCLOSE))) {
trueBody.push_back(parseFunctionStatement());
}
} else if (MATCHES(sequence(SEPARATOR_ROUNDBRACKETCLOSE))) {
trueBody.push_back(parseFunctionStatement());
} else
throwParseError("expected body of conditional statement");
if (!MATCHES(sequence(SEPARATOR_ROUNDBRACKETCLOSE)))
throwParseError("expected closing ')' after statement head");
if (MATCHES(sequence(KEYWORD_ELSE, SEPARATOR_CURLYBRACKETOPEN))) {
while (!MATCHES(sequence(SEPARATOR_CURLYBRACKETCLOSE))) {
falseBody.push_back(parseFunctionStatement());
}
} else if (MATCHES(sequence(KEYWORD_ELSE))) {
falseBody.push_back(parseFunctionStatement());
}
trueBody = parseStatementBody();
if (MATCHES(sequence(KEYWORD_ELSE)))
falseBody = parseStatementBody();
cleanup.release();
@@ -577,14 +589,10 @@ namespace hex::pl {
delete statement;
};
if (MATCHES(sequence(SEPARATOR_ROUNDBRACKETCLOSE, SEPARATOR_CURLYBRACKETOPEN))) {
while (!MATCHES(sequence(SEPARATOR_CURLYBRACKETCLOSE))) {
body.push_back(parseFunctionStatement());
}
} else if (MATCHES(sequence(SEPARATOR_ROUNDBRACKETCLOSE))) {
body.push_back(parseFunctionStatement());
} else
throwParseError("expected body of conditional statement");
if (!MATCHES(sequence(SEPARATOR_ROUNDBRACKETCLOSE)))
throwParseError("expected closing ')' after statement head");
body = parseStatementBody();
cleanup.release();