/*
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you under the Apache License, Version 2.0 (the
* "License"); you may not use this file except in compliance
* with the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing,
* software distributed under the License is distributed on an
* "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
* KIND, either express or implied. See the License for the
* specific language governing permissions and limitations
* under the License.
*/
package org.apache.uima.ruta.ide.core.parser;
import java.util.ArrayList;
import java.util.List;
import org.antlr.runtime.CommonToken;
import org.antlr.runtime.FailedPredicateException;
import org.antlr.runtime.MismatchedTokenException;
import org.antlr.runtime.NoViableAltException;
import org.antlr.runtime.RecognitionException;
import org.antlr.runtime.Token;
import org.antlr.runtime.TokenStream;
import org.eclipse.dltk.ast.DLTKToken;
import org.eclipse.dltk.compiler.problem.DefaultProblem;
import org.eclipse.dltk.compiler.problem.IProblemReporter;
import org.eclipse.dltk.compiler.problem.ProblemSeverities;
public class DLTKRutaErrorReporter {
IProblemReporter reporter;
DLTKTokenConverter converter;
RutaParser parser;
List problems = new ArrayList();
public DLTKRutaErrorReporter(DLTKTokenConverter converter, IProblemReporter reporter,
RutaParser parser) {
this.converter = converter;
this.reporter = reporter;
this.parser = parser;
}
public void reportError(RecognitionException re) {
if (reporter == null) {
return;
}
if (re.token == null) {
System.out.println("Token is null in ErrorReporter");
return;
}
Token token = re.token;
int line = re.token.getLine();
int index = token.getTokenIndex();
if (index < 0) {
index = re.index;
TokenStream tokenStream = parser.getTokenStream();
if (index > 0) {
token = tokenStream.get(index - 1);
line = token.getLine();
}
}
String message = re.getMessage();
String m = "";
if (message != null) {
m = message;
}
String tokenText = token.getText() == null ? "" : token.getText();
int bounds[] = RutaParseUtils.getBounds(token);
int st = bounds[0];
int et = bounds[1];
String errorPrefix = "";
//
//
if (re instanceof NoViableAltException) {
NoViableAltException nvae = (NoViableAltException) re;
errorPrefix = "Syntax error: ";
m = errorPrefix + tokenText + nvae.grammarDecisionDescription;
reportProblem(line, m, st, et);
} else if (re instanceof MismatchedTokenException) {
errorPrefix = "Mismatched Input: ";
MismatchedTokenException mte = (MismatchedTokenException) re;
int expecting = mte.expecting;
String expectedToken = "";
if (expecting > 0) {
expectedToken = parser.getTokenNames()[expecting];
errorPrefix = errorPrefix + "Expecting \"" + expectedToken;
String msg = errorPrefix + "\" but found \"" + tokenText + "\".";
reportProblem(line, msg, st, et);
} else {
reportDefaultProblem(line, m, tokenText, st, et, errorPrefix);
}
} else if (re instanceof FailedPredicateException) {
errorPrefix = "Failed predicate: ";
reportDefaultProblem(line, m, tokenText, st, et, errorPrefix);
} else {
// TODO handle default syntax errors smarter:
String[] messages = { "Syntax Error:" + message, message };
if (message == null) {
messages[0] = re.toString();
}
DLTKToken convert = this.converter.convert(re.token);
// reporter.handle(CompilerOptions.OFFSET, messages, messages,
// st, et);
DefaultProblem defaultProblem = new DefaultProblem("", messages[0], 0, new String[] {},
ProblemSeverities.Error, st, et, re.token.getLine());
if (!problems.contains(defaultProblem)) {
reporter.reportProblem(defaultProblem);
problems.add(defaultProblem);
System.out.println(messages[0] + " ### line " + re.token.getLine());
}
}
}
/**
* @param line
* @param m
* @param tokenText
* @param st
* @param et
* @param errorPrefix
*/
private void reportDefaultProblem(int line, String m, String tokenText, int st, int et,
String errorPrefix) {
String msg = errorPrefix + m + " : " + tokenText;
reportProblem(line, msg, st, et);
}
private void reportProblem(int line, String msg, int st, int et) {
DefaultProblem defaultProblem = createDefaultProblem(msg, st, et, line);
if (!problems.contains(defaultProblem)) {
reporter.reportProblem(defaultProblem);
problems.add(defaultProblem);
}
}
private DefaultProblem createDefaultProblem(String m, int st, int et, int line) {
// TODO handle filename
return new DefaultProblem("", m, 0, new String[] {}, ProblemSeverities.Error, st, et, line);
}
public void reportThrowable(Throwable extre) {
extre.printStackTrace();
// String message = extre.getLocalizedMessage();
// DefaultProblem defaultProblem = new DefaultProblem("", message,
// 0, new String[] {}, ProblemSeverities.Error, 0, 10,
// 0);
// if (!problems.contains(defaultProblem)) {
// reporter.reportProblem(defaultProblem);
// problems.add(defaultProblem);
// }
}
public void reportMessage(String msg) {
}
public void reportErrorOld(RecognitionException re) {
if (reporter == null) {
return;
}
if (re.token == null) {
System.out.println("Token is null in ErrorReporter");
return;
}
Token token = re.token;
int line = re.token.getLine();
int index = token.getTokenIndex();
if (index < 0) {
index = re.index;
TokenStream tokenStream = parser.getTokenStream();
try {
token = tokenStream.get(index - 1);
line = token.getLine();
} catch (ArrayIndexOutOfBoundsException e) {
e.printStackTrace();
}
}
String message = re.getMessage();
String m = "unknown error";
if (message != null) {
m = message;
}
if (re instanceof NoViableAltException) {
NoViableAltException ec = (NoViableAltException) re;
if (message == null || ec.token.getText() == null) {
m = ec.toString();
} else {
m = "Syntax Error:" + message + " : " + ec.token.getText();
}
String[] messages = { m };
int st = converter.convert(ec.token.getLine(), ec.token.getCharPositionInLine());
String sm = ec.token.getText();
int et = st + ec.token.getText().length();
if (st == -1)
return;
DefaultProblem defaultProblem = new DefaultProblem("", messages[0], 0, new String[] {},
ProblemSeverities.Error, st, et, ec.token.getLine());
if (!problems.contains(defaultProblem)) {
reporter.reportProblem(defaultProblem);
problems.add(defaultProblem);
System.out.println(messages[0] + " ### line " + ec.token.getLine());
}
} else if (re instanceof MismatchedTokenException) {
MismatchedTokenException ec = (MismatchedTokenException) re;
if (message == null || ec.token.getText() == null) {
m = ec.toString();
} else {
m = "mismatched input: " + message + " : " + ec.token.getText();
}
// if (message == null) {
// message = "mismatched input "
// + this.parser.getTokenErrorDisplay(ec.token);
// // return;
// }
String[] messages = { m }; // "Syntax Error:" + message, message,
// ec.token.getText() };
// this.converter.convert(ec.token).getColumn() - 1;
// String sm = ec.token.getText();
// st + ((sm != null) ? sm.length() : 1);
// TODO martin: "rewrite converter"
int st = converter.convert(ec.token.getLine(), ec.token.getCharPositionInLine());
// String sm = ec.token.getText();
int et = st;
if (ec.token.getText() != null) {
et = ec.token.getText().length() + st;
if (et >= this.converter.length()) {
et = this.converter.length() - 1;
st -= 2;
}
} else {
st = ((CommonToken) token).getStartIndex();
et = ((CommonToken) token).getStopIndex();
}
// reporter.handle(CompilerOptions.OFFSET, messages, messages,
// st, et);
DefaultProblem defaultProblem = new DefaultProblem("", messages[0], 0, new String[] {},
ProblemSeverities.Error, st, et, ec.line);
if (!problems.contains(defaultProblem)) {
reporter.reportProblem(defaultProblem);
problems.add(defaultProblem);
System.out.println(messages[0] + " ### line " + ec.line);
}
} else if (re instanceof FailedPredicateException) {
String[] messages = { "Syntax Error:" + message, message };
if (message == null) {
messages[0] = re.toString();
}
DLTKToken convert = this.converter.convert(re.token);
int st = convert.getColumn();
int et = convert.getColumn() + convert.getText().length();
// reporter.handle(CompilerOptions.OFFSET, messages, messages,
// st, et);
DefaultProblem defaultProblem = new DefaultProblem("", "Type not defined in this script: "
+ convert.getText(), 0, new String[] {}, ProblemSeverities.Warning, st, et,
re.token.getLine());
if (!problems.contains(defaultProblem)) {
reporter.reportProblem(defaultProblem);
problems.add(defaultProblem);
System.out.println(messages[0] + " ### line " + re.token.getLine());
}
} else {
String[] messages = { "Syntax Error:" + message, message };
if (message == null) {
messages[0] = re.toString();
}
DLTKToken convert = this.converter.convert(re.token);
int st = convert.getColumn();
int et = convert.getColumn() + convert.getText().length();
// reporter.handle(CompilerOptions.OFFSET, messages, messages,
// st, et);
DefaultProblem defaultProblem = new DefaultProblem("", messages[0], 0, new String[] {},
ProblemSeverities.Error, st, et, re.token.getLine());
if (!problems.contains(defaultProblem)) {
reporter.reportProblem(defaultProblem);
problems.add(defaultProblem);
System.out.println(messages[0] + " ### line " + re.token.getLine());
}
}
// } catch (CoreException e) {
// if (DLTKCore.DEBUG) {
// e.printStackTrace();
// }
// }
}
}