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using System;
using StringBuilder = System.Text.StringBuilder;
using BitSet = antlr.collections.impl.BitSet;
using AST = antlr.collections.AST;
namespace antlr
{
/*ANTLR Translator Generator
* Project led by Terence Parr at http://www.jGuru.com
* Software rights: http://www.antlr.org/license.html
*
* $Id:$
*/
//
// ANTLR C# Code Generator by Micheal Jordan
// Kunle Odutola : kunle UNDERSCORE odutola AT hotmail DOT com
// Anthony Oguntimehin
//
// With many thanks to Eric V. Smith from the ANTLR list.
//
[Serializable]
public class MismatchedTokenException : RecognitionException
{
// Token names array for formatting
internal string[] tokenNames;
// The token that was encountered
public IToken token;
// The offending AST node if tree walking
public AST node;
internal string tokenText = null; // taken from node or token object
// Types of tokens
public enum TokenTypeEnum
{
TokenType = 1,
NotTokenType = 2,
RangeType = 3,
NotRangeType = 4,
SetType = 5,
NotSetType = 6
}
// One of the above
public TokenTypeEnum mismatchType;
// For TOKEN/NOT_TOKEN and RANGE/NOT_RANGE
public int expecting;
// For RANGE/NOT_RANGE (expecting is lower bound of range)
public int upper;
// For SET/NOT_SET
public BitSet bset;
/*Looking for AST wildcard, didn't find it */
public MismatchedTokenException() : base("Mismatched Token: expecting any AST node", "<AST>", - 1, - 1)
{
}
// Expected range / not range
public MismatchedTokenException(string[] tokenNames_, AST node_, int lower, int upper_, bool matchNot) :
base("Mismatched Token", "<AST>", - 1, - 1)
{
tokenNames = tokenNames_;
node = node_;
if (node_ == null)
{
tokenText = "<empty tree>";
}
else
{
tokenText = node_.ToString();
}
mismatchType = matchNot ? TokenTypeEnum.NotRangeType : TokenTypeEnum.RangeType;
expecting = lower;
upper = upper_;
}
// Expected token / not token
public MismatchedTokenException(string[] tokenNames_, AST node_, int expecting_, bool matchNot) :
base("Mismatched Token", "<AST>", - 1, - 1)
{
tokenNames = tokenNames_;
node = node_;
if (node_ == null)
{
tokenText = "<empty tree>";
}
else
{
tokenText = node_.ToString();
}
mismatchType = matchNot ? TokenTypeEnum.NotTokenType : TokenTypeEnum.TokenType;
expecting = expecting_;
}
// Expected BitSet / not BitSet
public MismatchedTokenException(string[] tokenNames_, AST node_, BitSet set_, bool matchNot) :
base("Mismatched Token", "<AST>", - 1, - 1)
{
tokenNames = tokenNames_;
node = node_;
if (node_ == null)
{
tokenText = "<empty tree>";
}
else
{
tokenText = node_.ToString();
}
mismatchType = matchNot ? TokenTypeEnum.NotSetType : TokenTypeEnum.SetType;
bset = set_;
}
// Expected range / not range
public MismatchedTokenException(string[] tokenNames_, IToken token_, int lower, int upper_, bool matchNot, string fileName_) :
base("Mismatched Token", fileName_, token_.getLine(), token_.getColumn())
{
tokenNames = tokenNames_;
token = token_;
tokenText = token_.getText();
mismatchType = matchNot ? TokenTypeEnum.NotRangeType : TokenTypeEnum.RangeType;
expecting = lower;
upper = upper_;
}
// Expected token / not token
public MismatchedTokenException(string[] tokenNames_, IToken token_, int expecting_, bool matchNot, string fileName_) :
base("Mismatched Token", fileName_, token_.getLine(), token_.getColumn())
{
tokenNames = tokenNames_;
token = token_;
tokenText = token_.getText();
mismatchType = matchNot ? TokenTypeEnum.NotTokenType : TokenTypeEnum.TokenType;
expecting = expecting_;
}
// Expected BitSet / not BitSet
public MismatchedTokenException(string[] tokenNames_, IToken token_, BitSet set_, bool matchNot, string fileName_) :
base("Mismatched Token", fileName_, token_.getLine(), token_.getColumn())
{
tokenNames = tokenNames_;
token = token_;
tokenText = token_.getText();
mismatchType = matchNot ? TokenTypeEnum.NotSetType : TokenTypeEnum.SetType;
bset = set_;
}
/*
* Returns a clean error message (no line number/column information)
*/
override public string Message
{
get
{
StringBuilder sb = new StringBuilder();
switch (mismatchType)
{
case TokenTypeEnum.TokenType:
sb.Append("expecting " + tokenName(expecting) + ", found '" + tokenText + "'");
break;
case TokenTypeEnum.NotTokenType:
sb.Append("expecting anything but " + tokenName(expecting) + "; got it anyway");
break;
case TokenTypeEnum.RangeType:
sb.Append("expecting token in range: " + tokenName(expecting) + ".." + tokenName(upper) + ", found '" + tokenText + "'");
break;
case TokenTypeEnum.NotRangeType:
sb.Append("expecting token NOT in range: " + tokenName(expecting) + ".." + tokenName(upper) + ", found '" + tokenText + "'");
break;
case TokenTypeEnum.SetType: case TokenTypeEnum.NotSetType:
sb.Append("expecting " + (mismatchType == TokenTypeEnum.NotSetType ? "NOT " : "") + "one of (");
int[] elems = bset.toArray();
for (int i = 0; i < elems.Length; i++)
{
sb.Append(" ");
sb.Append(tokenName(elems[i]));
}
sb.Append("), found '" + tokenText + "'");
break;
default:
sb.Append(base.Message);
break;
}
return sb.ToString();
}
}
private string tokenName(int tokenType)
{
if (tokenType == Token.INVALID_TYPE)
{
return "<Set of tokens>";
}
else if (tokenType < 0 || tokenType >= tokenNames.Length)
{
return "<" + tokenType.ToString() + ">";
}
else
{
return tokenNames[tokenType];
}
}
}
}
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