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peteralieb |
/* Generated By:JavaCC: Do not edit this line. ParseException.java Version 5.0 */
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/* JavaCCOptions:KEEP_LINE_COL=null */
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/*
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@LICENSE@
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*/
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package edu.byu.cc.plieber.fpgaenet.debug.llparse;
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/**
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* This exception is thrown when parse errors are encountered.
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* You can explicitly create objects of this exception type by
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* calling the method generateParseException in the generated
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* parser.
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*
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* You can modify this class to customize your error reporting
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* mechanisms so long as you retain the public fields.
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*/
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public class ParseException extends Exception {
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/**
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* The version identifier for this Serializable class.
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* Increment only if the <i>serialized</i> form of the
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* class changes.
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*/
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private static final long serialVersionUID = 1L;
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/**
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* This constructor is used by the method "generateParseException"
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* in the generated parser. Calling this constructor generates
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* a new object of this type with the fields "currentToken",
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* "expectedTokenSequences", and "tokenImage" set.
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*/
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public ParseException(Token currentTokenVal,
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int[][] expectedTokenSequencesVal,
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String[] tokenImageVal
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)
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{
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super(initialise(currentTokenVal, expectedTokenSequencesVal, tokenImageVal));
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currentToken = currentTokenVal;
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expectedTokenSequences = expectedTokenSequencesVal;
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tokenImage = tokenImageVal;
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}
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/**
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* The following constructors are for use by you for whatever
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* purpose you can think of. Constructing the exception in this
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* manner makes the exception behave in the normal way - i.e., as
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* documented in the class "Throwable". The fields "errorToken",
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* "expectedTokenSequences", and "tokenImage" do not contain
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* relevant information. The JavaCC generated code does not use
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* these constructors.
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*/
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public ParseException() {
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super();
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}
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/** Constructor with message. */
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public ParseException(String message) {
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super(message);
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}
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/**
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* This is the last token that has been consumed successfully. If
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* this object has been created due to a parse error, the token
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* followng this token will (therefore) be the first error token.
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*/
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public Token currentToken;
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/**
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* Each entry in this array is an array of integers. Each array
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* of integers represents a sequence of tokens (by their ordinal
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* values) that is expected at this point of the parse.
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*/
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public int[][] expectedTokenSequences;
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/**
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* This is a reference to the "tokenImage" array of the generated
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* parser within which the parse error occurred. This array is
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* defined in the generated ...Constants interface.
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*/
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public String[] tokenImage;
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/**
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* It uses "currentToken" and "expectedTokenSequences" to generate a parse
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* error message and returns it. If this object has been created
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* due to a parse error, and you do not catch it (it gets thrown
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* from the parser) the correct error message
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* gets displayed.
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*/
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private static String initialise(Token currentToken,
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int[][] expectedTokenSequences,
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String[] tokenImage) {
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String eol = System.getProperty("line.separator", "\n");
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StringBuffer expected = new StringBuffer();
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int maxSize = 0;
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for (int i = 0; i < expectedTokenSequences.length; i++) {
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if (maxSize < expectedTokenSequences[i].length) {
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maxSize = expectedTokenSequences[i].length;
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}
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for (int j = 0; j < expectedTokenSequences[i].length; j++) {
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expected.append(tokenImage[expectedTokenSequences[i][j]]).append(' ');
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}
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if (expectedTokenSequences[i][expectedTokenSequences[i].length - 1] != 0) {
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expected.append("...");
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}
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expected.append(eol).append(" ");
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}
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String retval = "Encountered \"";
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Token tok = currentToken.next;
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for (int i = 0; i < maxSize; i++) {
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if (i != 0) retval += " ";
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if (tok.kind == 0) {
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retval += tokenImage[0];
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break;
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}
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retval += " " + tokenImage[tok.kind];
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retval += " \"";
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retval += add_escapes(tok.image);
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retval += " \"";
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tok = tok.next;
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}
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retval += "\" at line " + currentToken.next.beginLine + ", column " + currentToken.next.beginColumn;
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retval += "." + eol;
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if (expectedTokenSequences.length == 1) {
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retval += "Was expecting:" + eol + " ";
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} else {
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retval += "Was expecting one of:" + eol + " ";
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}
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retval += expected.toString();
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return retval;
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}
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/**
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* The end of line string for this machine.
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*/
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protected String eol = System.getProperty("line.separator", "\n");
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/**
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* Used to convert raw characters to their escaped version
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* when these raw version cannot be used as part of an ASCII
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* string literal.
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*/
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static String add_escapes(String str) {
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StringBuffer retval = new StringBuffer();
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char ch;
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for (int i = 0; i < str.length(); i++) {
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switch (str.charAt(i))
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{
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case 0 :
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continue;
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case '\b':
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retval.append("\\b");
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continue;
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case '\t':
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retval.append("\\t");
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continue;
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case '\n':
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retval.append("\\n");
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continue;
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case '\f':
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retval.append("\\f");
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continue;
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case '\r':
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retval.append("\\r");
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continue;
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case '\"':
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retval.append("\\\"");
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continue;
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case '\'':
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retval.append("\\\'");
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continue;
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case '\\':
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retval.append("\\\\");
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continue;
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default:
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if ((ch = str.charAt(i)) < 0x20 || ch > 0x7e) {
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String s = "0000" + Integer.toString(ch, 16);
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retval.append("\\u" + s.substring(s.length() - 4, s.length()));
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} else {
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retval.append(ch);
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}
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continue;
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}
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}
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return retval.toString();
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}
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}
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/* JavaCC - OriginalChecksum=f9ad4f1b9326cd17d0da7a5456484dd5 (do not edit this line) */
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