public Declaration Parse(LoonyParser parser, LoonyToken token)
{
var start = token;
var name = parser.Take(LoonyTokenType.Identifier);
var parameters = new List <FuncDeclaration.Parameter>();
TypeBase returnType = null;
parser.Take(LoonyTokenType.LeftParen);
if (!parser.MatchAndTake(LoonyTokenType.RightParen))
{
do
{
var paramName = parser.Take(LoonyTokenType.Identifier);
parser.Take(LoonyTokenType.Colon);
var paramType = parser.ParseType();
parameters.Add(new FuncDeclaration.Parameter(paramName, paramType));
} while (parser.MatchAndTake(LoonyTokenType.Comma));
parser.Take(LoonyTokenType.RightParen);
}
if (parser.MatchAndTake(LoonyTokenType.Colon))
{
returnType = parser.ParseType();
}
var body = parser.ParseBlock(false);
var end = parser.Previous;
return(new FuncDeclaration(start, end, name, parameters, returnType, body));
}
public Declaration Parse(LoonyParser parser, LoonyToken token)
{
var start = token;
var name = parser.Take(LoonyTokenType.Identifier);
var parameters = new List<FuncDeclaration.Parameter>();
TypeBase returnType = null;
parser.Take(LoonyTokenType.LeftParen);
if (!parser.MatchAndTake(LoonyTokenType.RightParen))
{
do
{
var paramName = parser.Take(LoonyTokenType.Identifier);
parser.Take(LoonyTokenType.Colon);
var paramType = parser.ParseType();
parameters.Add(new FuncDeclaration.Parameter(paramName, paramType));
} while (parser.MatchAndTake(LoonyTokenType.Comma));
parser.Take(LoonyTokenType.RightParen);
}
if (parser.MatchAndTake(LoonyTokenType.Colon))
returnType = parser.ParseType();
var body = parser.ParseBlock(false);
var end = parser.Previous;
return new FuncDeclaration(start, end, name, parameters, returnType, body);
}
private static TypeBase Parse(string type)
{
var lexer = new LoonyLexer(type);
var parser = new LoonyParser(lexer);
return(parser.ParseType());
}
public Statement Parse(LoonyParser parser, LoonyToken token, out bool trailingSemicolon)
{
trailingSemicolon = true;
var name = parser.Take(LoonyTokenType.Identifier).Contents;
TypeBase type = null;
Expression initializer = null;
if (parser.MatchAndTake(LoonyTokenType.Colon))
{
type = parser.ParseType();
}
if (type == null)
{
parser.Take(LoonyTokenType.Assign);
initializer = parser.ParseExpression();
}
else if (parser.MatchAndTake(LoonyTokenType.Assign))
{
initializer = parser.ParseExpression();
}
return(new VariableStatement(token, parser.Previous, name, type, initializer));
}
public Statement Parse(LoonyParser parser, LoonyToken token, out bool trailingSemicolon)
{
trailingSemicolon = true;
var name = parser.Take(LoonyTokenType.Identifier).Contents;
TypeBase type = null;
Expression initializer = null;
if (parser.MatchAndTake(LoonyTokenType.Colon))
type = parser.ParseType();
if (type == null)
{
parser.Take(LoonyTokenType.Assign);
initializer = parser.ParseExpression();
}
else if (parser.MatchAndTake(LoonyTokenType.Assign))
{
initializer = parser.ParseExpression();
}
return new VariableStatement(token, parser.Previous, name, type, initializer);
}