Stmt.Function ConstructorDeclaration()
{
Token name = _parserCursor.Advance();
string structorType;
Stmt.StmtType returnType;
if (name.lexeme[0] == '~')
{
structorType = "Destructor";
returnType = new Stmt.StmtType(new List <Token> {
new Token("void", TokenType.VOID)
});
}
else
{
structorType = "Constructor";
returnType = new Stmt.StmtType(new List <Token> {
new Token("void", TokenType.VOID) /*new Token(name.lexeme, name.tokenType)*/
});
}
_parserCursor.Consume(TokenType.LEFT_PAREN, $"Expect opening bracket after {structorType} name.");
List <Stmt.InputVar> parameters = new();
if (!_parserCursor.IsCheck(TokenType.RIGHT_PAREN))
{
do
{
Token typeTok;
if (_parserCursor.IsCheckAnyType())
{
typeTok = _parserCursor.Advance();
}
else
{
throw new ParserException(_parserCursor.Peek(), "Expect parameter type.");
}
Token id = _parserCursor.Consume(TokenType.IDENTIFIER, "Expect parameter name.");
parameters.Add(new Stmt.InputVar(new Stmt.StmtType(new List <Token> {
typeTok
}), id));
} while (_parserCursor.IsMatch(TokenType.COMMA));
}
_parserCursor.Consume(TokenType.RIGHT_PAREN, "Expect closing bracket after parameters.");
_parserCursor.Consume(TokenType.COLON, $"Expect colon before {structorType} body.");
_parserCursor.Consume(TokenType.NEWLINE, $"Expect 'newline' before {structorType} body.");
var body = Block();
return(new Stmt.Function(returnType, name, parameters, body));
}
/// <summary>Declare a function/method.</summary>
Stmt.Function FunDeclaration()
{
var returnType = new Stmt.StmtType(new List <Token> {
_parserCursor.Advance()
});
Token name = _parserCursor.Consume(TokenType.IDENTIFIER, "Expected function name.");
_parserCursor.Consume(TokenType.LEFT_PAREN, "Expect open bracket after function name.");
var parameters = new List <Stmt.InputVar>();
if (!_parserCursor.IsCheck(TokenType.RIGHT_PAREN))
{
do
{
Token typeTok;
if (_parserCursor.IsCheckAnyType())
{
typeTok = _parserCursor.Advance();
}
else
{
throw new ParserException(_parserCursor.Peek(), "Expect parameter type.");
}
Token id = _parserCursor.Consume(TokenType.IDENTIFIER, "Expect parameter name.");
parameters.Add(new Stmt.InputVar(new Stmt.StmtType(new List <Token> {
typeTok
}), id));
} while (_parserCursor.IsMatch(TokenType.COMMA));
}
_parserCursor.Consume(TokenType.RIGHT_PAREN, "Expect closing bracket after parameters.");
_parserCursor.Consume(TokenType.COLON, "Expect colon before function body.");
_parserCursor.Consume(TokenType.NEWLINE, "Expect newline before function body.");
List <Stmt> body = Block();
return(new Stmt.Function(returnType, name, parameters, body));
}
public object VisitTypeStmt(Stmt.StmtType stmt, object options)
{
return(stmt.token.lexeme);
}
public object VisitTypeStmt(Stmt.StmtType stmt, object options = null)
{
return(stmt.info);
}
