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Function declaration statement

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This commit is contained in:
Rafał Grodziński
2025-06-01 23:17:07 +09:00
parent 26d476e9e3
commit fcfe6392a4
1 changed files with 18 additions and 5 deletions
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23
src/Parser.cpp
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@@ -23,6 +23,12 @@ vector<shared_ptr<Statement>> Parser::getStatements() {
// Statement // Statement
// //
shared_ptr<Statement> Parser::nextStatement() { shared_ptr<Statement> Parser::nextStatement() {
{
shared_ptr<Statement> statement = matchFunctionDeclarationStatement();
if (statement->isValid())
return statement;
}
{ {
shared_ptr<Statement> statement = matchExpressionStatement(); shared_ptr<Statement> statement = matchExpressionStatement();
if (statement->isValid()) if (statement->isValid())
@@ -34,7 +40,7 @@ shared_ptr<Statement> Parser::nextStatement() {
shared_ptr<Statement> Parser::matchFunctionDeclarationStatement() { shared_ptr<Statement> Parser::matchFunctionDeclarationStatement() {
if (!matchesTokenKinds({Token::Kind::IDENTIFIER, Token::Kind::COLON, Token::Kind::FUNCTION})) 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, { }, ""); return make_shared<Statement>(Statement::Kind::INVALID, make_shared<Token>(tokens.at(currentIndex)), nullptr, nullptr, vector<shared_ptr<Statement>>(), "");
Token identifierToken = tokens.at(currentIndex); Token identifierToken = tokens.at(currentIndex);
currentIndex++; currentIndex++;
@@ -49,7 +55,7 @@ shared_ptr<Statement> Parser::matchFunctionDeclarationStatement() {
if (!blockStatement->isValid()) if (!blockStatement->isValid())
return blockStatement; return blockStatement;
return make_shared<Statement>(Statement::Kind::FUNCTION_DECLARATION, nullptr, nullptr, blockStatement, { }, identifierToken.getLexme()); return make_shared<Statement>(Statement::Kind::FUNCTION_DECLARATION, nullptr, nullptr, blockStatement, vector<shared_ptr<Statement>>(), identifierToken.getLexme());
} }
shared_ptr<Statement> Parser::matchBlockStatement() { shared_ptr<Statement> Parser::matchBlockStatement() {
@@ -62,11 +68,18 @@ shared_ptr<Statement> Parser::matchBlockStatement() {
statements.push_back(statement); statements.push_back(statement);
} }
currentIndex++; // skip ; currentIndex++; // skip ;
if (!tokens.at(currentIndex).isOfKind({Token::Kind::NEW_LINE, Token::Kind::END}))
return make_shared<Statement>(Statement::Kind::INVALID, make_shared<Token>(tokens.at(currentIndex)), nullptr, nullptr, vector<shared_ptr<Statement>>(), "");
if (tokens.at(currentIndex).getKind() == Token::Kind::NEW_LINE)
currentIndex++;
return make_shared<Statement>(Statement::Kind::BLOCK, nullptr, nullptr, nullptr, statements, ""); return make_shared<Statement>(Statement::Kind::BLOCK, nullptr, nullptr, nullptr, statements, "");
} }
shared_ptr<Statement> Parser::matchInvalidStatement() { shared_ptr<Statement> Parser::matchInvalidStatement() {
return make_shared<Statement>(Statement::Kind::INVALID, make_shared<Token>(tokens.at(currentIndex)), nullptr, nullptr, { }, ""); return make_shared<Statement>(Statement::Kind::INVALID, make_shared<Token>(tokens.at(currentIndex)), nullptr, nullptr, vector<shared_ptr<Statement>>(), "");
} }
// //
@@ -76,9 +89,9 @@ shared_ptr<Statement> Parser::matchExpressionStatement() {
shared_ptr<Expression> expression = term(); shared_ptr<Expression> expression = term();
if (expression->isValid() && tokens.at(currentIndex).isOfKind({Token::Kind::NEW_LINE, Token::Kind::END})) { if (expression->isValid() && tokens.at(currentIndex).isOfKind({Token::Kind::NEW_LINE, Token::Kind::END})) {
currentIndex++; currentIndex++;
return make_shared<Statement>(Statement::Kind::EXPRESSION, nullptr, expression, nullptr, { }, ""); return make_shared<Statement>(Statement::Kind::EXPRESSION, nullptr, expression, nullptr, vector<shared_ptr<Statement>>(), "");
} else { } else {
return make_shared<Statement>(Statement::Kind::INVALID, make_shared<Token>(tokens.at(currentIndex)), expression, nullptr, { }, ""); return make_shared<Statement>(Statement::Kind::INVALID, make_shared<Token>(tokens.at(currentIndex)), expression, nullptr, vector<shared_ptr<Statement>>(), "");
} }
} }