com.arcadedb.query.sql.parser.ParseException Maven / Gradle / Ivy
/*
* Copyright © 2021-present Arcade Data Ltd ([email protected])
*
* Licensed 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.
*
* SPDX-FileCopyrightText: 2021-present Arcade Data Ltd ([email protected])
* SPDX-License-Identifier: Apache-2.0
*/
/* Generated By:JavaCC: Do not edit this line. ParseException.java Version 5.0 */
/* JavaCCOptions:KEEP_LINE_COL=null */
package com.arcadedb.query.sql.parser;
/**
* This exception is thrown when parse errors are encountered.
* You can explicitly create objects of this exception type by
* calling the method generateParseException in the generated
* parser.
*
* You can modify this class to customize your error reporting
* mechanisms so long as you retain the public fields.
*/
public class ParseException extends Exception {
/**
* This is the last token that has been consumed successfully. If
* this object has been created due to a parse error, the token
* following this token will (therefore) be the first error token.
*/
public Token currentToken;
/**
* Each entry in this array is an array of integers. Each array
* of integers represents a sequence of tokens (by their ordinal
* values) that is expected at this point of the parse.
*/
public int[][] expectedTokenSequences;
/**
* This is a reference to the "tokenImage" array of the generated
* parser within which the parse error occurred. This array is
* defined in the generated ...Constants interface.
*/
public String[] tokenImage;
/**
* The version identifier for this Serializable class.
* Increment only if the serialized form of the
* class changes.
*/
private static final long serialVersionUID = 1L;
/**
* This constructor is used by the method "generateParseException"
* in the generated parser. Calling this constructor generates
* a new object of this type with the fields "currentToken",
* "expectedTokenSequences", and "tokenImage" set.
*/
public ParseException(final String command, final Token currentTokenVal, final int[][] expectedTokenSequencesVal, final String[] tokenImageVal) {
super(initialise(command, currentTokenVal, expectedTokenSequencesVal, tokenImageVal));
currentToken = currentTokenVal;
expectedTokenSequences = expectedTokenSequencesVal;
tokenImage = tokenImageVal;
}
/**
* This constructor is used by the method "generateParseException"
* in the generated parser. Calling this constructor generates
* a new object of this type with the fields "currentToken",
* "expectedTokenSequences", and "tokenImage" set.
*/
public ParseException(final Token currentTokenVal, final int[][] expectedTokenSequencesVal, final String[] tokenImageVal) {
super(initialise(null, currentTokenVal, expectedTokenSequencesVal, tokenImageVal));
currentToken = currentTokenVal;
expectedTokenSequences = expectedTokenSequencesVal;
tokenImage = tokenImageVal;
}
/**
* The following constructors are for use by you for whatever
* purpose you can think of. Constructing the exception in this
* manner makes the exception behave in the normal way - i.e., as
* documented in the class "Throwable". The fields "errorToken",
* "expectedTokenSequences", and "tokenImage" do not contain
* relevant information. The JavaCC generated code does not use
* these constructors.
*/
public ParseException() {
super();
}
/**
* Constructor with message.
*/
public ParseException(final String message) {
super(message);
}
public String toString(final String command) {
return initialise(command, currentToken, expectedTokenSequences, tokenImage);
}
private static String initialise(final Token currentToken, final int[][] expectedTokenSequences, final String[] tokenImage) {
return initialise(null, currentToken, expectedTokenSequences, tokenImage);
}
/**
* It uses "currentToken" and "expectedTokenSequences" to generate a parse
* error message and returns it. If this object has been created
* due to a parse error, and you do not catch it (it gets thrown
* from the parser) the correct error message
* gets displayed.
*/
private static String initialise(final String command, final Token currentToken, final int[][] expectedTokenSequences, final String[] tokenImage) {
final String eol = System.getProperty("line.separator", "\n");
final StringBuilder expected = new StringBuilder();
int maxSize = 1;
for (int i = 0; i < expectedTokenSequences.length; i++) {
if (maxSize < expectedTokenSequences[i].length) {
maxSize = expectedTokenSequences[i].length;
}
for (int j = 0; j < expectedTokenSequences[i].length; j++) {
expected.append(tokenImage[expectedTokenSequences[i][j]]).append(' ');
}
if (expectedTokenSequences[i][expectedTokenSequences[i].length - 1] != 0) {
expected.append("...");
}
expected.append(eol).append(" ");
}
String retval = "Encountered ";
Token tok = currentToken.next;
for (int i = 0; i < maxSize; i++) {
if (i != 0)
retval += " ";
if (tok.kind == 0) {
retval += tokenImage[0];
break;
}
retval += tokenImage[tok.kind];
retval += " \"";
retval += add_escapes(tok.image);
retval += "\"";
tok = tok.next;
}
retval += " at line " + currentToken.next.beginLine + ", column " + currentToken.next.beginColumn;
retval += "." + eol;
if (command != null) {
retval += command + eol;
for (int i = 0; i < currentToken.next.beginColumn - 1; ++i)
retval += '-';
retval += '^' + eol;
}
if (expected.length() > 0) {
if (expectedTokenSequences.length == 1) {
retval += "Was expecting:" + eol + " ";
} else {
retval += "Was expecting one of:" + eol + " ";
}
retval += expected.toString();
}
return retval;
}
/**
* Used to convert raw characters to their escaped version
* when these raw version cannot be used as part of an ASCII
* string literal.
*/
static String add_escapes(final String str) {
final StringBuilder retval = new StringBuilder();
char ch;
for (int i = 0; i < str.length(); i++) {
switch (str.charAt(i)) {
case 0:
continue;
case '\b':
retval.append("\\b");
continue;
case '\t':
retval.append("\\t");
continue;
case '\n':
retval.append("\\n");
continue;
case '\f':
retval.append("\\f");
continue;
case '\r':
retval.append("\\r");
continue;
case '\"':
retval.append("\\\"");
continue;
case '\'':
retval.append("\\'");
continue;
case '\\':
retval.append("\\\\");
continue;
default:
if ((ch = str.charAt(i)) < 0x20 || ch > 0x7e) {
final String s = "0000" + Integer.toString(ch, 16);
retval.append("\\u" + s.substring(s.length() - 4));
} else {
retval.append(ch);
}
}
}
return retval.toString();
}
}
/* JavaCC - OriginalChecksum=e7f89c9049c17dd46e7739992a5ab696 (do not edit this line) */