ParseException.cs
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上传日期:2013-09-30
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文件大小:7k
- /*
- * Copyright 2004 The Apache Software Foundation
- *
- * 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.
- */
- /* Generated By:JavaCC: Do not edit this line. ParseException.java Version 3.0 */
- using System;
- namespace Lucene.Net.QueryParsers
- {
-
- /// <summary> 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.
- /// </summary>
- [Serializable]
- public class ParseException : System.Exception
- {
- /// <summary> This method has the standard behavior when this object has been
- /// created using the standard constructors. Otherwise, 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), then this method is called during the printing
- /// of the final stack trace, and hence the correct error message
- /// gets displayed.
- /// </summary>
- public override System.String Message
- {
- get
- {
- if (!specialConstructor)
- {
- return base.Message;
- }
- System.String expected = "";
- int maxSize = 0;
- 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 += (tokenImage[expectedTokenSequences[i][j]] + " ");
- }
- if (expectedTokenSequences[i][expectedTokenSequences[i].Length - 1] != 0)
- {
- expected += "...";
- }
- expected += (eol + " ");
- }
- System.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 += Add_escapes(tok.image);
- tok = tok.next;
- }
- retval += ("" at line " + currentToken.next.beginLine + ", column " + currentToken.next.beginColumn);
- retval += ("." + eol);
- if (expectedTokenSequences.Length == 1)
- {
- retval += ("Was expecting:" + eol + " ");
- }
- else
- {
- retval += ("Was expecting one of:" + eol + " ");
- }
- retval += expected;
- return retval;
- }
-
- }
-
- /// <summary> 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. The boolean
- /// flag "specialConstructor" is also set to true to indicate that
- /// this constructor was used to create this object.
- /// This constructor calls its super class with the empty string
- /// to force the "toString" method of parent class "Throwable" to
- /// print the error message in the form:
- /// ParseException: <result of getMessage>
- /// </summary>
- public ParseException(Token currentTokenVal, int[][] expectedTokenSequencesVal, System.String[] tokenImageVal):base("")
- {
- specialConstructor = true;
- currentToken = currentTokenVal;
- expectedTokenSequences = expectedTokenSequencesVal;
- tokenImage = tokenImageVal;
- }
-
- /// <summary> 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.
- /// </summary>
-
- public ParseException():base()
- {
- specialConstructor = false;
- }
-
- public ParseException(System.String message) : base(message)
- {
- specialConstructor = false;
- }
-
- /// <summary> This variable determines which constructor was used to create
- /// this object and thereby affects the semantics of the
- /// "getMessage" method (see below).
- /// </summary>
- protected internal bool specialConstructor;
-
- /// <summary> This is the last token that has been consumed successfully. If
- /// this object has been created due to a parse error, the token
- /// followng this token will (therefore) be the first error token.
- /// </summary>
- public Token currentToken;
-
- /// <summary> 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.
- /// </summary>
- public int[][] expectedTokenSequences;
-
- /// <summary> 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.
- /// </summary>
- public System.String[] tokenImage;
-
- /// <summary> The end of line string for this machine.</summary>
- protected internal System.String eol = SupportClass.AppSettings.Get("line.separator", "n");
-
- /// <summary> Used to convert raw characters to their escaped version
- /// when these raw version cannot be used as part of an ASCII
- /// string literal.
- /// </summary>
- protected internal virtual System.String Add_escapes(System.String str)
- {
- System.Text.StringBuilder retval = new System.Text.StringBuilder();
- char ch;
- for (int i = 0; i < str.Length; i++)
- {
- switch (str[i])
- {
-
- case (char) (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[i]) < 0x20 || ch > 0x7e)
- {
- System.String s = "0000" + System.Convert.ToString(ch, 16);
- retval.Append("\u" + s.Substring(s.Length - 4, (s.Length) - (s.Length - 4)));
- }
- else
- {
- retval.Append(ch);
- }
- continue;
-
- }
- }
- return retval.ToString();
- }
- }
- }