org.antlr.runtime.NoViableAltException Java Examples
The following examples show how to use
org.antlr.runtime.NoViableAltException.
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Example #1
| Source File: STLexer.java From codebuff with BSD 2-Clause "Simplified" License | 6 votes |
|
Token ESCAPE() {
startCharIndex = input.index();
startCharPositionInLine = input.getCharPositionInLine();
consume(); // kill \\
if ( c=='u') return UNICODE();
String text;
switch ( c ) {
case '\\' : LINEBREAK(); return SKIP;
case 'n' : text = "\n"; break;
case 't' : text = "\t"; break;
case ' ' : text = " "; break;
default :
NoViableAltException e = new NoViableAltException("",0,0,input);
errMgr.lexerError(input.getSourceName(), "invalid escaped char: '"+str(c)+"'", templateToken, e);
consume();
match(delimiterStopChar);
return SKIP;
}
consume();
Token t = newToken(TEXT, text, input.getCharPositionInLine()-2);
match(delimiterStopChar);
return t;
}
Example #2
| Source File: STLexer.java From codebuff with BSD 2-Clause "Simplified" License | 5 votes |
|
Token ESCAPE() {
startCharIndex = input.index();
startCharPositionInLine = input.getCharPositionInLine();
consume(); // kill \\
if ( c=='u' ) return UNICODE();
String text;
switch ( c ) {
case '\\' :
LINEBREAK();
return SKIP;
case 'n' :
text = "\n";
break;
case 't' :
text = "\t";
break;
case ' ' :
text = " ";
break;
default:
NoViableAltException e = new NoViableAltException("", 0, 0, input);
errMgr.lexerError(input.getSourceName(), "invalid escaped char: '"+str(c)+"'",
templateToken,
e);
consume();
match(delimiterStopChar);
return SKIP;
}
consume();
Token t = newToken(TEXT, text, input.getCharPositionInLine()-2);
match(delimiterStopChar);
return t;
}
Example #3
| Source File: STLexer.java From codebuff with BSD 2-Clause "Simplified" License | 5 votes |
|
Token ESCAPE() {
startCharIndex = input.index();
startCharPositionInLine = input.getCharPositionInLine();
consume(); // kill \\
if ( c=='u' ) return UNICODE();
String text;
switch (c) {
case '\\':
LINEBREAK();
return SKIP;
case 'n':
text = "\n";
break;
case 't':
text = "\t";
break;
case ' ':
text = " ";
break;
default:
NoViableAltException e = new NoViableAltException("", 0, 0, input);
errMgr.lexerError(input.getSourceName(),
"invalid escaped char: '" +str(c)+"'",
templateToken,
e);
consume();
match(delimiterStopChar);
return SKIP;
}
consume();
Token t = newToken(TEXT, text, input.getCharPositionInLine() -2);
match(delimiterStopChar);
return t;
}
Example #4
| Source File: RecognizerErrorHandler.java From legstar-core2 with GNU Affero General Public License v3.0 | 5 votes |
|
/**
* Simplify error message text for end users.
* @param e exception that occurred
* @param msg as formatted by ANTLR
* @return a more readable error message
*/
public static String makeUserMsg(final RecognitionException e, final String msg) {
if (e instanceof NoViableAltException) {
return msg.replace("no viable alternative at", "unrecognized");
} else if (e instanceof UnwantedTokenException) {
return msg.replace("extraneous input", "unexpected token");
} else if (e instanceof MismatchedTokenException) {
if (msg.contains("mismatched input '<EOF>'")) {
return msg.replace("mismatched input '<EOF>' expecting", "reached end of file looking for");
} else {
return msg.replace("mismatched input", "unexpected token");
}
} else if (e instanceof EarlyExitException) {
return msg.replace("required (...)+ loop did not match anything", "required tokens not found");
} else if (e instanceof FailedPredicateException) {
if (msg.contains("picture_string failed predicate: {Unbalanced parentheses}")) {
return "Unbalanced parentheses in picture string";
}
if (msg.contains("PICTURE_PART failed predicate: {Contains invalid picture symbols}")) {
return "Picture string contains invalid symbols";
}
if (msg.contains("PICTURE_PART failed predicate: {Syntax error in last picture clause}")) {
return "Syntax error in last picture clause";
}
if (msg.contains("DATA_NAME failed predicate: {Syntax error in last clause}")) {
return "Syntax error in last COBOL clause";
}
}
return msg;
}
Example #5
| Source File: STLexer.java From codebuff with BSD 2-Clause "Simplified" License | 5 votes |
|
/** Consume if {@code x} is next character on the input stream.
*/
public void match(char x) {
if ( c!= x ) {
NoViableAltException e = new NoViableAltException("", 0, 0, input);
errMgr.lexerError(input.getSourceName(),
"expecting '" +x+"', found '"+str(c)+"'",
templateToken,
e);
}
consume();
}
Example #6
| Source File: STLexer.java From codebuff with BSD 2-Clause "Simplified" License | 5 votes |
|
Token ESCAPE() {
startCharIndex = input.index();
startCharPositionInLine = input.getCharPositionInLine();
consume(); // kill \\
if ( c=='u' ) return UNICODE();
String text;
switch (c) {
case '\\':
LINEBREAK();
return SKIP;
case 'n':
text = "\n";
break;
case 't':
text = "\t";
break;
case ' ':
text = " ";
break;
default:
NoViableAltException e = new NoViableAltException("", 0, 0, input);
errMgr.lexerError(input.getSourceName(),
"invalid escaped char: '" +str(c)+"'",
templateToken,
e);
consume();
match(delimiterStopChar);
return SKIP;
}
consume();
Token t = newToken(TEXT, text, input.getCharPositionInLine() -2);
match(delimiterStopChar);
return t;
}
Example #7
| Source File: DFA.java From xtext-core with Eclipse Public License 2.0 | 5 votes |
|
@Override
protected void error(NoViableAltException nvae) {
if (nvae.token == Token.EOF_TOKEN) {
int lookAheadAddOn = getRecognizer().lookAheadAddOn;
int lookAhead = ((XtextTokenStream)nvae.input).getCurrentLookAhead();
if ((lookAhead >= lookAheadAddOn && lookAheadAddOn > 0) || (lookAhead == 0 && lookAheadAddOn > 0) || lookAhead == -1)
getRecognizer().failedPredicateAtEOF = true;
}
super.error(nvae);
}
Example #8
| Source File: STLexer.java From codebuff with BSD 2-Clause "Simplified" License | 5 votes |
|
Token ESCAPE() {
startCharIndex = input.index();
startCharPositionInLine = input.getCharPositionInLine();
consume(); // kill \\
if ( c=='u' ) return UNICODE();
String text;
switch (c) {
case '\\' :
LINEBREAK();
return SKIP;
case 'n' :
text = "\n";
break;
case 't' :
text = "\t";
break;
case ' ' :
text = " ";
break;
default:
NoViableAltException e = new NoViableAltException("", 0, 0, input);
errMgr.lexerError(input.getSourceName(), "invalid escaped char: '"+str(c)+"'", templateToken, e);
consume();
match(delimiterStopChar);
return SKIP;
}
consume();
Token t = newToken(TEXT, text, input.getCharPositionInLine() -2);
match(delimiterStopChar);
return t;
}
Example #9
| Source File: STLexer.java From codebuff with BSD 2-Clause "Simplified" License | 5 votes |
|
/** Consume if {@code x} is next character on the input stream.
*/
public void match(char x) {
if ( c!= x ) {
NoViableAltException e = new NoViableAltException("", 0, 0, input);
errMgr.lexerError(input.getSourceName(),
"expecting '" +x+"', found '"+str(c)+"'",
templateToken,
e);
}
consume();
}
Example #10
| Source File: Lexer.java From xtext-core with Eclipse Public License 2.0 | 5 votes |
|
@Override
public Token nextToken() {
while (true) {
this.state.token = null;
this.state.channel = Token.DEFAULT_CHANNEL;
this.state.tokenStartCharIndex = input.index();
this.state.tokenStartCharPositionInLine = input.getCharPositionInLine();
this.state.tokenStartLine = input.getLine();
this.state.text = null;
if (input.LA(1) == CharStream.EOF) {
return Token.EOF_TOKEN;
}
try {
mTokens();
if (this.state.token == null) {
emit();
}
else if (this.state.token == Token.SKIP_TOKEN) {
continue;
}
return this.state.token;
}
catch (RecognitionException re) {
reportError(re);
if (re instanceof NoViableAltException ||
re instanceof FailedPredicateException) {
recover(re);
}
// create token that holds mismatched char
Token t = new CommonToken(input, Token.INVALID_TOKEN_TYPE, Token.HIDDEN_CHANNEL,
this.state.tokenStartCharIndex, getCharIndex() - 1);
t.setLine(this.state.tokenStartLine);
t.setCharPositionInLine(this.state.tokenStartCharPositionInLine);
tokenErrorMap.put(t, getErrorMessage(re, this.getTokenNames()));
emit(t);
return this.state.token;
}
}
}
Example #11
| Source File: STLexer.java From codebuff with BSD 2-Clause "Simplified" License | 5 votes |
|
Token ESCAPE() {
startCharIndex = input.index();
startCharPositionInLine = input.getCharPositionInLine();
consume(); // kill \\
if ( c=='u' ) return UNICODE();
String text;
switch (c) {
case '\\':
LINEBREAK();
return SKIP;
case 'n':
text = "\n";
break;
case 't':
text = "\t";
break;
case ' ':
text = " ";
break;
default:
NoViableAltException e = new NoViableAltException("", 0, 0, input);
errMgr.lexerError(input.getSourceName(),
"invalid escaped char: '" +str(c)+"'",
templateToken,
e);
consume();
match(delimiterStopChar);
return SKIP;
}
consume();
Token t = newToken(TEXT, text, input.getCharPositionInLine() -2);
match(delimiterStopChar);
return t;
}
Example #12
| Source File: STLexer.java From codebuff with BSD 2-Clause "Simplified" License | 5 votes |
|
/** Consume if {@code x} is next character on the input stream.
*/
public void match(char x) {
if ( c!= x ) {
NoViableAltException e = new NoViableAltException("", 0, 0, input);
errMgr.lexerError(input.getSourceName(), "expecting '"+x+"', found '"+str(c)+"'",
templateToken,
e);
}
consume();
}
Example #13
| Source File: Lexer.java From gef with Eclipse Public License 2.0 | 5 votes |
|
@Override
public Token nextToken() {
while (true) {
this.state.token = null;
this.state.channel = Token.DEFAULT_CHANNEL;
this.state.tokenStartCharIndex = input.index();
this.state.tokenStartCharPositionInLine = input
.getCharPositionInLine();
this.state.tokenStartLine = input.getLine();
this.state.text = null;
if (input.LA(1) == CharStream.EOF) {
return Token.EOF_TOKEN;
}
try {
mTokens();
if (this.state.token == null) {
emit();
} else if (this.state.token == Token.SKIP_TOKEN) {
continue;
}
return this.state.token;
} catch (RecognitionException re) {
reportError(re);
if (re instanceof NoViableAltException
|| re instanceof FailedPredicateException) {
recover(re);
}
// create token that holds mismatched char
Token t = new CommonToken(input, Token.INVALID_TOKEN_TYPE,
Token.HIDDEN_CHANNEL, this.state.tokenStartCharIndex,
getCharIndex() - 1);
t.setLine(this.state.tokenStartLine);
t.setCharPositionInLine(
this.state.tokenStartCharPositionInLine);
tokenErrorMap.put(t, getErrorMessage(re, this.getTokenNames()));
emit(t);
return this.state.token;
}
}
}
Example #14
| Source File: STLexer.java From codebuff with BSD 2-Clause "Simplified" License | 5 votes |
|
Token ESCAPE() {
startCharIndex = input.index();
startCharPositionInLine = input.getCharPositionInLine();
consume(); // kill \\
if ( c=='u' ) return UNICODE();
String text;
switch ( c ) {
case '\\':
LINEBREAK();
return SKIP;
case 'n':
text = "\n";
break;
case 't':
text = "\t";
break;
case ' ':
text = " ";
break;
default:
NoViableAltException e = new NoViableAltException("", 0, 0, input);
errMgr.lexerError(input.getSourceName(), "invalid escaped char: '"+str(c)+"'",
templateToken,
e);
consume();
match(delimiterStopChar);
return SKIP;
}
consume();
Token t = newToken(TEXT, text, input.getCharPositionInLine()-2);
match(delimiterStopChar);
return t;
}
Example #15
| Source File: STLexer.java From codebuff with BSD 2-Clause "Simplified" License | 5 votes |
|
/** Consume if {@code x} is next character on the input stream.
*/
public void match(char x) {
if ( c!= x ) {
NoViableAltException e = new NoViableAltException("", 0, 0, input);
errMgr.lexerError(input.getSourceName(), "expecting '"+x+"', found '"+str(c)+"'",
templateToken,
e);
}
consume();
}
Example #16
| Source File: STLexer.java From codebuff with BSD 2-Clause "Simplified" License | 5 votes |
|
/** Consume if {@code x} is next character on the input stream.
*/
public void match(char x) {
if ( c!= x ) {
NoViableAltException e = new NoViableAltException("", 0, 0, input);
errMgr.lexerError(input.getSourceName(), "expecting '"+x+"', found '"+str(c)+"'", templateToken, e);
}
consume();
}
Example #17
| Source File: STLexer.java From codebuff with BSD 2-Clause "Simplified" License | 5 votes |
|
/** Consume if {@code x} is next character on the input stream.
*/
public void match(char x) {
if ( c!= x ) {
NoViableAltException e = new NoViableAltException("", 0, 0, input);
errMgr.lexerError(input.getSourceName(), "expecting '"+x+"', found '"+str(c)+"'", templateToken, e);
}
consume();
}
Example #18
| Source File: STLexer.java From codebuff with BSD 2-Clause "Simplified" License | 5 votes |
|
Token ESCAPE() {
startCharIndex = input.index();
startCharPositionInLine = input.getCharPositionInLine();
consume(); // kill \\
if ( c=='u' ) return UNICODE();
String text;
switch ( c ) {
case '\\' :
LINEBREAK();
return SKIP;
case 'n' :
text = "\n";
break;
case 't' :
text = "\t";
break;
case ' ' :
text = " ";
break;
default:
NoViableAltException e = new NoViableAltException("", 0, 0, input);
errMgr.lexerError(input.getSourceName(), "invalid escaped char: '"+str(c)+"'", templateToken, e);
consume();
match(delimiterStopChar);
return SKIP;
}
consume();
Token t = newToken(TEXT, text, input.getCharPositionInLine() -2);
match(delimiterStopChar);
return t;
}
Example #19
| Source File: STLexer.java From codebuff with BSD 2-Clause "Simplified" License | 5 votes |
|
/** Consume if {@code x} is next character on the input stream.
*/
public void match(char x) {
if ( c!= x ) {
NoViableAltException e = new NoViableAltException("", 0, 0, input);
errMgr.lexerError(input.getSourceName(), "expecting '"+x+"', found '"+str(c)+"'",
templateToken,
e);
}
consume();
}
Example #20
| Source File: STLexer.java From codebuff with BSD 2-Clause "Simplified" License | 5 votes |
|
/** Consume if {@code x} is next character on the input stream.
*/
public void match(char x) {
if ( c != x ) {
NoViableAltException e = new NoViableAltException("",0,0,input);
errMgr.lexerError(input.getSourceName(), "expecting '"+x+"', found '"+str(c)+"'", templateToken, e);
}
consume();
}
Example #21
| Source File: STLexer.java From codebuff with BSD 2-Clause "Simplified" License | 5 votes |
|
Token ESCAPE() {
startCharIndex = input.index();
startCharPositionInLine = input.getCharPositionInLine();
consume(); // kill \\
if ( c=='u' ) return UNICODE();
String text;
switch ( c ) {
case '\\':
LINEBREAK();
return SKIP;
case 'n':
text = "\n";
break;
case 't':
text = "\t";
break;
case ' ':
text = " ";
break;
default:
NoViableAltException e = new NoViableAltException("", 0, 0, input);
errMgr.lexerError(input.getSourceName(), "invalid escaped char: '"+str(c)+"'",
templateToken,
e);
consume();
match(delimiterStopChar);
return SKIP;
}
consume();
Token t = newToken(TEXT, text, input.getCharPositionInLine()-2);
match(delimiterStopChar);
return t;
}
Example #22
| Source File: STLexer.java From codebuff with BSD 2-Clause "Simplified" License | 5 votes |
|
/** Consume if {@code x} is next character on the input stream.
*/
public void match(char x) {
if ( c!= x ) {
NoViableAltException e = new NoViableAltException("", 0, 0, input);
errMgr.lexerError(input.getSourceName(), "expecting '"+x+"', found '"+str(c)+"'",
templateToken,
e);
}
consume();
}
Example #23
| Source File: ToolANTLRParser.java From codebuff with BSD 2-Clause "Simplified" License | 5 votes |
|
public String getParserErrorMessage(Parser parser, RecognitionException e) {
String msg;
if ( e instanceof NoViableAltException) {
String name = parser.getTokenErrorDisplay(e.token);
msg = name+" came as a complete surprise to me";
}
else if ( e instanceof v4ParserException) {
msg = ((v4ParserException)e).msg;
}
else {
msg = parser.getErrorMessage(e, parser.getTokenNames());
}
return msg;
}
Example #24
| Source File: STLexer.java From codebuff with BSD 2-Clause "Simplified" License | 5 votes |
|
Token ESCAPE() {
startCharIndex = input.index();
startCharPositionInLine = input.getCharPositionInLine();
consume(); // kill \\
if ( c=='u' ) return UNICODE();
String text;
switch ( c ) {
case '\\':
LINEBREAK();
return SKIP;
case 'n':
text = "\n";
break;
case 't':
text = "\t";
break;
case ' ':
text = " ";
break;
default:
NoViableAltException e = new NoViableAltException("", 0, 0, input);
errMgr.lexerError(input.getSourceName(), "invalid escaped char: '"+str(c)+"'",
templateToken,
e);
consume();
match(delimiterStopChar);
return SKIP;
}
consume();
Token t = newToken(TEXT, text, input.getCharPositionInLine()-2);
match(delimiterStopChar);
return t;
}
Example #25
| Source File: STLexer.java From codebuff with BSD 2-Clause "Simplified" License | 5 votes |
|
/** Consume if {@code x} is next character on the input stream.
*/
public void match(char x) {
if ( c!= x ) {
NoViableAltException e = new NoViableAltException("", 0, 0, input);
errMgr.lexerError(input.getSourceName(),
"expecting '"+x+"', found '"+str(c)+"'",
templateToken,
e);
}
consume();
}
Example #26
| Source File: STLexer.java From codebuff with BSD 2-Clause "Simplified" License | 5 votes |
|
Token ESCAPE() {
startCharIndex = input.index();
startCharPositionInLine = input.getCharPositionInLine();
consume(); // kill \\
if ( c=='u' ) return UNICODE();
String text;
switch ( c ) {
case '\\':
LINEBREAK();
return SKIP;
case 'n':
text = "\n";
break;
case 't':
text = "\t";
break;
case ' ':
text = " ";
break;
default:
NoViableAltException e = new NoViableAltException("", 0, 0, input);
errMgr.lexerError(input.getSourceName(), "invalid escaped char: '"+str(c)+"'",
templateToken,
e);
consume();
match(delimiterStopChar);
return SKIP;
}
consume();
Token t = newToken(TEXT, text, input.getCharPositionInLine()-2);
match(delimiterStopChar);
return t;
}
Example #27
| Source File: STLexer.java From codebuff with BSD 2-Clause "Simplified" License | 5 votes |
|
Token ESCAPE() {
startCharIndex = input.index();
startCharPositionInLine = input.getCharPositionInLine();
consume(); // kill \\
if ( c=='u' ) return UNICODE();
String text;
switch ( c ) {
case '\\':
LINEBREAK();
return SKIP;
case 'n':
text = "\n";
break;
case 't':
text = "\t";
break;
case ' ':
text = " ";
break;
default:
NoViableAltException e = new NoViableAltException("", 0, 0, input);
errMgr.lexerError(input.getSourceName(),
"invalid escaped char: '"+str(c)+"'",
templateToken,
e);
consume();
match(delimiterStopChar);
return SKIP;
}
consume();
Token t = newToken(TEXT, text, input.getCharPositionInLine()-2);
match(delimiterStopChar);
return t;
}
Example #28
| Source File: STLexer.java From codebuff with BSD 2-Clause "Simplified" License | 5 votes |
|
/** Consume if {@code x} is next character on the input stream.
*/
public void match(char x) {
if ( c!= x ) {
NoViableAltException e = new NoViableAltException("", 0, 0, input);
errMgr.lexerError(input.getSourceName(), "expecting '"+x+"', found '"+str(c)+"'", templateToken, e);
}
consume();
}
Example #29
| Source File: STLexer.java From codebuff with BSD 2-Clause "Simplified" License | 5 votes |
|
Token ESCAPE() {
startCharIndex = input.index();
startCharPositionInLine = input.getCharPositionInLine();
consume(); // kill \\
if ( c=='u' ) return UNICODE();
String text;
switch ( c ) {
case '\\' :
LINEBREAK();
return SKIP;
case 'n' :
text = "\n";
break;
case 't' :
text = "\t";
break;
case ' ' :
text = " ";
break;
default:
NoViableAltException e = new NoViableAltException("", 0, 0, input);
errMgr.lexerError(input.getSourceName(), "invalid escaped char: '"+str(c)+"'", templateToken, e);
consume();
match(delimiterStopChar);
return SKIP;
}
consume();
Token t = newToken(TEXT, text, input.getCharPositionInLine() -2);
match(delimiterStopChar);
return t;
}
Example #30
| Source File: STLexer.java From codebuff with BSD 2-Clause "Simplified" License | 5 votes |
|
/** Consume if {@code x} is next character on the input stream.
*/
public void match(char x) {
if ( c!= x ) {
NoViableAltException e = new NoViableAltException("", 0, 0, input);
errMgr.lexerError(input.getSourceName(), "expecting '"+x+"', found '"+str(c)+"'",
templateToken,
e);
}
consume();
}
