CarGDev/bits-runner-builder
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This commit is contained in:
Rafał Grodziński
2025-06-01 16:18:51 +09:00
parent 16439e2fb2
commit 26d476e9e3
4 changed files with 72 additions and 7 deletions
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52
src/Parser.cpp
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@@ -32,8 +32,41 @@ shared_ptr<Statement> Parser::nextStatement() {
return matchInvalidStatement();
}
shared_ptr<Statement> Parser::matchFunctionDeclarationStatement() {
if (!matchesTokenKinds({Token::Kind::IDENTIFIER, Token::Kind::COLON, Token::Kind::FUNCTION}))
return make_shared<Statement>(Statement::Kind::INVALID, make_shared<Token>(tokens.at(currentIndex)), nullptr, nullptr, { }, "");
Token identifierToken = tokens.at(currentIndex);
currentIndex++;
currentIndex++; // skip colon
currentIndex++; // skip fun
while (tokens.at(currentIndex).getKind() != Token::Kind::NEW_LINE) {
currentIndex++;
}
currentIndex++; // new line
shared_ptr<Statement> blockStatement = matchBlockStatement();
if (!blockStatement->isValid())
return blockStatement;
return make_shared<Statement>(Statement::Kind::FUNCTION_DECLARATION, nullptr, nullptr, blockStatement, { }, identifierToken.getLexme());
}
shared_ptr<Statement> Parser::matchBlockStatement() {
vector<shared_ptr<Statement>> statements;
while (tokens.at(currentIndex).getKind() != Token::Kind::SEMICOLON) {
shared_ptr<Statement> statement = nextStatement();
if (!statement->isValid())
return statement;
statements.push_back(statement);
}
currentIndex++; // skip ;
return make_shared<Statement>(Statement::Kind::BLOCK, nullptr, nullptr, nullptr, statements, "");
}
shared_ptr<Statement> Parser::matchInvalidStatement() {
return make_shared<Statement>(Statement::Kind::INVALID, make_shared<Token>(tokens.at(currentIndex)), nullptr);
return make_shared<Statement>(Statement::Kind::INVALID, make_shared<Token>(tokens.at(currentIndex)), nullptr, nullptr, { }, "");
}
//
@@ -43,9 +76,9 @@ shared_ptr<Statement> Parser::matchExpressionStatement() {
shared_ptr<Expression> expression = term();
if (expression->isValid() && tokens.at(currentIndex).isOfKind({Token::Kind::NEW_LINE, Token::Kind::END})) {
currentIndex++;
return make_shared<Statement>(Statement::Kind::EXPRESSION, nullptr, expression);
return make_shared<Statement>(Statement::Kind::EXPRESSION, nullptr, expression, nullptr, { }, "");
} else {
return make_shared<Statement>(Statement::Kind::INVALID, make_shared<Token>(tokens.at(currentIndex)), expression);
return make_shared<Statement>(Statement::Kind::INVALID, make_shared<Token>(tokens.at(currentIndex)), expression, nullptr, { }, "");
}
}
@@ -128,4 +161,15 @@ shared_ptr<Expression> Parser::matchBinary(shared_ptr<Expression> left) {
}
return make_shared<Expression>(Expression::Kind::INVALID, token, nullptr, nullptr);
}
}
bool Parser::matchesTokenKinds(vector<Token::Kind> kinds) {
if (currentIndex + kinds.size() >= tokens.size())
return false;
for (int i=0; i<kinds.size(); i++) {
if (kinds.at(i) != tokens.at(currentIndex + i).getKind())
return false;
}
return true;
}