public static IExpression Build(BaseNode node)
{
if (node == null)
{
throw new ArgumentNullException("node");
}
switch (node.Type)
{
case TokenType.Integer:
return new ValueExpression(node.Text, ValueExpressionType.Integer);
case TokenType.Plus:
return new BinaryExpression(
BinaryExpressionType.Plus,
Build((ExpressionNode)node.GetChild(0)),
Build((ExpressionNode)node.GetChild(1)));
case TokenType.Minus:
return new BinaryExpression(
BinaryExpressionType.Minus,
Build((ExpressionNode)node.GetChild(0)),
Build((ExpressionNode)node.GetChild(1)));
case TokenType.Multiply:
return new BinaryExpression(
BinaryExpressionType.Multiply,
Build((ExpressionNode)node.GetChild(0)),
Build((ExpressionNode)node.GetChild(1)));
case TokenType.Divide:
return new BinaryExpression(
BinaryExpressionType.Div,
Build((ExpressionNode)node.GetChild(0)),
Build((ExpressionNode)node.GetChild(1)));
case TokenType.Mod:
return new BinaryExpression(
BinaryExpressionType.Mod,
Build((ExpressionNode)node.GetChild(0)),
Build((ExpressionNode)node.GetChild(1)));
case TokenType.ShiftLeft:
return new BinaryExpression(
BinaryExpressionType.ShiftLeft,
Build((ExpressionNode)node.GetChild(0)),
Build((ExpressionNode)node.GetChild(1)));
case TokenType.ShiftRight:
return new BinaryExpression(
BinaryExpressionType.ShiftRight,
Build((ExpressionNode)node.GetChild(0)),
Build((ExpressionNode)node.GetChild(1)));
case TokenType.GreaterOrEqual:
return new BinaryExpression(
BinaryExpressionType.GreaterOrEqual,
Build((ExpressionNode)node.GetChild(0)),
Build((ExpressionNode)node.GetChild(1)));
case TokenType.LesserOrEqual:
return new BinaryExpression(
BinaryExpressionType.LesserOrEqual,
Build((ExpressionNode)node.GetChild(0)),
Build((ExpressionNode)node.GetChild(1)));
case TokenType.Greater:
return new BinaryExpression(
BinaryExpressionType.Greater,
Build((ExpressionNode)node.GetChild(0)),
Build((ExpressionNode)node.GetChild(1)));
case TokenType.Lesser:
return new BinaryExpression(
BinaryExpressionType.Lesser,
Build((ExpressionNode)node.GetChild(0)),
Build((ExpressionNode)node.GetChild(1)));
case TokenType.Equal:
return new BinaryExpression(
BinaryExpressionType.Equal,
Build((ExpressionNode)node.GetChild(0)),
Build((ExpressionNode)node.GetChild(1)));
case TokenType.NotEqual:
return new BinaryExpression(
BinaryExpressionType.NotEqual,
Build((ExpressionNode)node.GetChild(0)),
Build((ExpressionNode)node.GetChild(1)));
case TokenType.And:
return new BinaryExpression(
BinaryExpressionType.And,
Build((ExpressionNode)node.GetChild(0)),
Build((ExpressionNode)node.GetChild(1)));
case TokenType.Or:
return new BinaryExpression(
BinaryExpressionType.Or,
Build((ExpressionNode)node.GetChild(0)),
Build((ExpressionNode)node.GetChild(1)));
case TokenType.BitAnd:
return new BinaryExpression(
BinaryExpressionType.BitAnd,
Build((ExpressionNode)node.GetChild(0)),
Build((ExpressionNode)node.GetChild(1)));
case TokenType.BitOr:
return new BinaryExpression(
BinaryExpressionType.BitOr,
Build((ExpressionNode)node.GetChild(0)),
Build((ExpressionNode)node.GetChild(1)));
case TokenType.BitXor:
return new BinaryExpression(
BinaryExpressionType.BitXor,
Build((ExpressionNode)node.GetChild(0)),
Build((ExpressionNode)node.GetChild(1)));
case TokenType.SizeOf:
return new FunctionExpression(node.Text,
node.GetChild(0).Text,
Build((ExpressionNode)node.GetChild(0)));
case TokenType.Variable:
return new ValueExpression(node.Text, ValueExpressionType.Variable);
case TokenType.Not:
return new UnaryExpression(UnaryExpressionType.Not,
Build((ExpressionNode)node.GetChild(0)));
case TokenType.BitNot:
return new UnaryExpression(UnaryExpressionType.BitNot,
Build((ExpressionNode)node.GetChild(0)));
case TokenType.Negative:
return new UnaryExpression(UnaryExpressionType.Negative,
Build((ExpressionNode)node.GetChild(0)));
case TokenType.Positive:
return new UnaryExpression(UnaryExpressionType.Positive,
Build((ExpressionNode)node.GetChild(0)));
case TokenType.Dereference:
return new UnaryExpression(UnaryExpressionType.Dereference,
Build((ExpressionNode)node.GetChild(0)));
case TokenType.Conditional:
return new ConditionalExpression(
Build((ExpressionNode)node.GetChild(0)),
Build((ExpressionNode)node.GetChild(1)),
Build((ExpressionNode)node.GetChild(2)));
case TokenType.EndOfFile:
return new ValueExpression(String.Empty, ValueExpressionType.Null);
default:
throw new ExpressionEvaluatorException(
String.Format("'{0}' operation is not supported.", node.Type));
}
}
public static IExpression Build(BaseNode node)
{
if (node == null)
{
throw new ArgumentNullException("node");
}
switch (node.Type)
{
case TokenType.Integer:
return(new ValueExpression(node.Text, ValueExpressionType.Integer));
case TokenType.Plus:
return(new BinaryExpression(
BinaryExpressionType.Plus,
Build((ExpressionNode)node.GetChild(0)),
Build((ExpressionNode)node.GetChild(1))));
case TokenType.Minus:
return(new BinaryExpression(
BinaryExpressionType.Minus,
Build((ExpressionNode)node.GetChild(0)),
Build((ExpressionNode)node.GetChild(1))));
case TokenType.Multiply:
return(new BinaryExpression(
BinaryExpressionType.Multiply,
Build((ExpressionNode)node.GetChild(0)),
Build((ExpressionNode)node.GetChild(1))));
case TokenType.Divide:
return(new BinaryExpression(
BinaryExpressionType.Div,
Build((ExpressionNode)node.GetChild(0)),
Build((ExpressionNode)node.GetChild(1))));
case TokenType.Mod:
return(new BinaryExpression(
BinaryExpressionType.Mod,
Build((ExpressionNode)node.GetChild(0)),
Build((ExpressionNode)node.GetChild(1))));
case TokenType.ShiftLeft:
return(new BinaryExpression(
BinaryExpressionType.ShiftLeft,
Build((ExpressionNode)node.GetChild(0)),
Build((ExpressionNode)node.GetChild(1))));
case TokenType.ShiftRight:
return(new BinaryExpression(
BinaryExpressionType.ShiftRight,
Build((ExpressionNode)node.GetChild(0)),
Build((ExpressionNode)node.GetChild(1))));
case TokenType.GreaterOrEqual:
return(new BinaryExpression(
BinaryExpressionType.GreaterOrEqual,
Build((ExpressionNode)node.GetChild(0)),
Build((ExpressionNode)node.GetChild(1))));
case TokenType.LesserOrEqual:
return(new BinaryExpression(
BinaryExpressionType.LesserOrEqual,
Build((ExpressionNode)node.GetChild(0)),
Build((ExpressionNode)node.GetChild(1))));
case TokenType.Greater:
return(new BinaryExpression(
BinaryExpressionType.Greater,
Build((ExpressionNode)node.GetChild(0)),
Build((ExpressionNode)node.GetChild(1))));
case TokenType.Lesser:
return(new BinaryExpression(
BinaryExpressionType.Lesser,
Build((ExpressionNode)node.GetChild(0)),
Build((ExpressionNode)node.GetChild(1))));
case TokenType.Equal:
return(new BinaryExpression(
BinaryExpressionType.Equal,
Build((ExpressionNode)node.GetChild(0)),
Build((ExpressionNode)node.GetChild(1))));
case TokenType.NotEqual:
return(new BinaryExpression(
BinaryExpressionType.NotEqual,
Build((ExpressionNode)node.GetChild(0)),
Build((ExpressionNode)node.GetChild(1))));
case TokenType.And:
return(new BinaryExpression(
BinaryExpressionType.And,
Build((ExpressionNode)node.GetChild(0)),
Build((ExpressionNode)node.GetChild(1))));
case TokenType.Or:
return(new BinaryExpression(
BinaryExpressionType.Or,
Build((ExpressionNode)node.GetChild(0)),
Build((ExpressionNode)node.GetChild(1))));
case TokenType.BitAnd:
return(new BinaryExpression(
BinaryExpressionType.BitAnd,
Build((ExpressionNode)node.GetChild(0)),
Build((ExpressionNode)node.GetChild(1))));
case TokenType.BitOr:
return(new BinaryExpression(
BinaryExpressionType.BitOr,
Build((ExpressionNode)node.GetChild(0)),
Build((ExpressionNode)node.GetChild(1))));
case TokenType.BitXor:
return(new BinaryExpression(
BinaryExpressionType.BitXor,
Build((ExpressionNode)node.GetChild(0)),
Build((ExpressionNode)node.GetChild(1))));
case TokenType.SizeOf:
return(new FunctionExpression(node.Text,
node.GetChild(0).Text,
Build((ExpressionNode)node.GetChild(0))));
case TokenType.Variable:
return(new ValueExpression(node.Text, ValueExpressionType.Variable));
case TokenType.Not:
return(new UnaryExpression(UnaryExpressionType.Not,
Build((ExpressionNode)node.GetChild(0))));
case TokenType.BitNot:
return(new UnaryExpression(UnaryExpressionType.BitNot,
Build((ExpressionNode)node.GetChild(0))));
case TokenType.Negative:
return(new UnaryExpression(UnaryExpressionType.Negative,
Build((ExpressionNode)node.GetChild(0))));
case TokenType.Positive:
return(new UnaryExpression(UnaryExpressionType.Positive,
Build((ExpressionNode)node.GetChild(0))));
case TokenType.Dereference:
return(new UnaryExpression(UnaryExpressionType.Dereference,
Build((ExpressionNode)node.GetChild(0))));
case TokenType.Conditional:
return(new ConditionalExpression(
Build((ExpressionNode)node.GetChild(0)),
Build((ExpressionNode)node.GetChild(1)),
Build((ExpressionNode)node.GetChild(2))));
case TokenType.EndOfFile:
return(new ValueExpression(String.Empty, ValueExpressionType.Null));
default:
throw new ExpressionEvaluatorException(
String.Format("'{0}' operation is not supported.", node.Type));
}
}