public IASTNode HandleIdentifierError(IToken token, RecognitionException ex)
{
if (token is HqlToken)
{
HqlToken hqlToken = (HqlToken)token;
// ... and the token could be an identifer and the error is
// a mismatched token error ...
if (hqlToken.PossibleId && (ex is MismatchedTokenException))
{
MismatchedTokenException mte = (MismatchedTokenException)ex;
// ... and the expected token type was an identifier, then:
if (mte.Expecting == IDENT)
{
// Use the token as an identifier.
_parseErrorHandler.ReportWarning("Keyword '"
+ token.Text
+ "' is being interpreted as an identifier due to: " + mte.Message);
// Add the token to the AST.
token.Type = WEIRD_IDENT;
input.Consume();
return((IASTNode)adaptor.Create(token));
}
}
}
// Otherwise, handle the error normally.
ReflectHelper.PreserveStackTrace(ex);
throw ex;
}
public override IToken Emit()
{
var t = new HqlToken(input,
state.type,
state.channel,
state.tokenStartCharIndex,
CharIndex - 1) {Line = state.tokenStartLine, Text = state.text};
Emit(t);
return t;
}
public void WeakKeywords()
{
int t = input.LA(1);
switch (t)
{
case ORDER:
case GROUP:
// Case 1: Multi token keywords GROUP BY and ORDER BY
// The next token ( LT(2) ) should be 'by'... otherwise, this is just an ident.
if (input.LA(2) != LITERAL_by)
{
input.LT(1).Type = IDENT;
if (log.IsDebugEnabled())
{
log.Debug("weakKeywords() : new LT(1) token - {0}", input.LT(1));
}
}
break;
case LEFT:
case RIGHT:
// Support left and right functions
if (input.LA(2) == OPEN)
{
input.LT(1).Type = IDENT;
if (log.IsDebugEnabled())
{
log.Debug("weakKeywords() : new LT(1) token - {0}", input.LT(1));
}
}
break;
default:
// Case 2: The current token is after FROM and before '.'.
if (t != IDENT && input.LA(-1) == FROM && ((input.LA(2) == DOT) || (input.LA(2) == IDENT) || (input.LA(2) == -1)))
{
HqlToken hqlToken = input.LT(1) as HqlToken;
if (hqlToken != null && hqlToken.PossibleId)
{
hqlToken.Type = IDENT;
if (log.IsDebugEnabled())
{
log.Debug("weakKeywords() : new LT(1) token - {0}", input.LT(1));
}
}
}
break;
}
}
public override IToken Emit()
{
var t = new HqlToken(input,
state.type,
state.channel,
state.tokenStartCharIndex,
CharIndex - 1)
{
Line = state.tokenStartLine, Text = state.text
};
Emit(t);
return(t);
}
public void WeakKeywords2()
{
/*
* path
* alias in class? path
* in open path close
* alias in elements open path close
* elements open path close
* alias in path dot elements
*/
int t = input.LA(1);
switch (t)
{
case ORDER:
case GROUP:
// Case 1: Multi token keywords GROUP BY and ORDER BY
// The next token ( LT(2) ) should be 'by'... otherwise, this is just an ident.
if (input.LA(2) != LITERAL_by)
{
input.LT(1).Type = IDENT;
if (log.IsDebugEnabled())
{
log.Debug("weakKeywords() : new LT(1) token - {0}", input.LT(1));
}
}
break;
default:
// Case 2: The current token is after FROM and before '.'.
if (t != IDENT && input.LA(-1) == FROM && input.LA(2) == DOT)
{
HqlToken hqlToken = (HqlToken)input.LT(1);
if (hqlToken.PossibleId)
{
hqlToken.Type = IDENT;
if (log.IsDebugEnabled())
{
log.Debug("weakKeywords() : new LT(1) token - {0}", input.LT(1));
}
}
}
break;
}
}
public void HandleDotIdent()
{
// This handles HHH-354, where there is a strange property name in a where clause.
// If the lookahead contains a DOT then something that isn't an IDENT...
if (input.LA(1) == DOT && input.LA(2) != IDENT)
{
// See if the second lookahed token can be an identifier.
HqlToken t = input.LT(2) as HqlToken;
if (t != null && t.PossibleId)
{
// Set it!
input.LT(2).Type = IDENT;
if (log.IsDebugEnabled())
{
log.Debug("handleDotIdent() : new LT(2) token - {0}", input.LT(1));
}
}
}
}
public void WeakKeywords()
{
int t = input.LA(1);
switch (t)
{
case ORDER:
case GROUP:
// Case 1: Multi token keywords GROUP BY and ORDER BY
// The next token ( LT(2) ) should be 'by'... otherwise, this is just an ident.
if (input.LA(2) != LITERAL_by)
{
input.LT(1).Type = IDENT;
if (log.IsDebugEnabled)
{
log.Debug("weakKeywords() : new LT(1) token - " + input.LT(1));
}
}
break;
default:
// Case 2: The current token is after FROM and before '.'.
if (t != IDENT && input.LA(-1) == FROM && ((input.LA(2) == DOT) || (input.LA(2) == IDENT) || (input.LA(2) == -1)))
{
HqlToken hqlToken = (HqlToken)input.LT(1);
if (hqlToken.PossibleId)
{
hqlToken.Type = IDENT;
if (log.IsDebugEnabled)
{
log.Debug("weakKeywords() : new LT(1) token - " + input.LT(1));
}
}
}
break;
}
}
