private static AstNode ParseLambda(TokenStream stream)
{
stream.Expect (TokenClass.Keyword, "lambda");
bool isInstanceMethod;
bool isVariadic;
bool acceptsKwargs;
List<string> parameters = ParseFuncParameters (stream,
out isInstanceMethod,
out isVariadic,
out acceptsKwargs);
LambdaExpression decl = new LambdaExpression (stream.Location, isInstanceMethod, isVariadic, acceptsKwargs, parameters);
if (stream.Accept (TokenClass.Operator, "=>"))
decl.Add (new ReturnStatement (stream.Location, ParseExpression (stream)));
else
decl.Add (ParseStatement (stream));
return decl;
}
private static AstNode ParseWhen(TokenStream stream)
{
WhenStatement caseStmt = new WhenStatement (stream.Location);
stream.Expect (TokenClass.Keyword, "when");
AstNode value = ParseExpression (stream);
AstNode body = ParseStatement (stream);
AstNode lambda = new LambdaExpression (body.Location, false, false, false,
new System.Collections.Generic.List<string> ());
lambda.Add (body);
caseStmt.Add (value);
caseStmt.Add (lambda);
return caseStmt;
}
