private KecaknoahUnaryExpressionAstNode ParseUnaryExpression(Queue<KecaknoahToken> tokens)
{
var ut = tokens.Peek();
switch (ut.Type)
{
case KecaknoahTokenType.Minus:
tokens.Dequeue();
var mue = new KecaknoahUnaryExpressionAstNode();
mue.Target = ParsePrimaryExpression(tokens);
mue.ExpressionType = KecaknoahOperatorType.Minus;
return mue;
case KecaknoahTokenType.Not:
tokens.Dequeue();
var nue = new KecaknoahUnaryExpressionAstNode();
nue.Target = ParsePrimaryExpression(tokens);
nue.ExpressionType = KecaknoahOperatorType.Not;
return nue;
case KecaknoahTokenType.Increment:
tokens.Dequeue();
var iue = new KecaknoahUnaryExpressionAstNode();
iue.Target = ParsePrimaryExpression(tokens);
iue.ExpressionType = KecaknoahOperatorType.Increment;
return iue;
case KecaknoahTokenType.Decrement:
tokens.Dequeue();
var due = new KecaknoahUnaryExpressionAstNode();
due.Target = ParsePrimaryExpression(tokens);
due.ExpressionType = KecaknoahOperatorType.Decrement;
return due;
case KecaknoahTokenType.Plus:
tokens.Dequeue();
goto default;
default:
var pe = ParsePrimaryExpression(tokens);
return pe;
}
}
internal IList<KecaknoahILCode> PrecompilePrefixIncrement(KecaknoahUnaryExpressionAstNode node)
{
var result = new List<KecaknoahILCode>();
result.AddRange(PrecompileExpression(node.Target));
result.Add(new KecaknoahILCode { Type = KecaknoahILCodeType.PushInteger, IntegerValue = 1 });
result.Add(new KecaknoahILCode { Type = KecaknoahILCodeType.PlusAssign });
return result;
}
