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1 package org.codehaus.groovy.syntax;
2
3 import org.codehaus.groovy.syntax.Types;
4 import org.codehaus.groovy.syntax.Token;
5 import org.codehaus.groovy.syntax.ParserException;
6
7 public class UnexpectedTokenException extends ParserException {
8 private Token unexpectedToken;
9 private int[] expectedTypes;
10 private String  comment;
11
12 public UnexpectedTokenException(Token token) {
13 this(token, null, null );
14 }
15
16 public UnexpectedTokenException(Token token, int expectedType) {
17 this(token, new int[] { expectedType });
18 }
19
20 public UnexpectedTokenException(Token token, int[] expectedTypes) {
21 this(token, expectedTypes, null );
22 }
23
24 public UnexpectedTokenException(Token token, int[] expectedTypes, String comment) {
25 super("Unexpected token", token);
26 this.unexpectedToken = token;
27 this.expectedTypes = expectedTypes;
28 this.comment = comment;
29 }
30
31 public Token getUnexpectedToken() {
32 return this.unexpectedToken;
33 }
34
35 public int[] getExpectedTypes() {
36 return this.expectedTypes;
37 }
38
39 public String getUnexpectedTokenText( ) {
40 String text = null;
41 if( this.unexpectedToken != null )
42 {
43 text = this.unexpectedToken.getText();
44 }
45
46 if( text == null )
47 {
48 text = "";
49 }
50
51 return text;
52 }
53
54 public String getMessage() {
55 StringBuffer message = new StringBuffer ();
56
57 if( expectedTypes != null ) {
58 message.append( "expected " );
59
60 if (this.expectedTypes.length == 1) {
61 message.append( Types.getDescription(this.expectedTypes[0]) );
62 }
63 else {
64 message.append("one of { ");
65
66 for (int i = 0; i < expectedTypes.length; ++i) {
67 message.append( Types.getDescription(this.expectedTypes[i]) );
68
69 if ((i + 1) < expectedTypes.length) {
70 if( expectedTypes.length > 2 ) {
71 message.append(", ");
72 }
73 else {
74 message.append(" ");
75 }
76 }
77
78 if ((i + 2) == expectedTypes.length) {
79 message.append("or ");
80 }
81 }
82
83 message.append(" }");
84 }
85
86 message.append( "; found '" );
87 }
88 else {
89 message.append( "could not use '" );
90 }
91
92 message.append( getUnexpectedTokenText() ).append( "'" );
93 if( unexpectedToken != null ) {
94 message.append(" at " + unexpectedToken.getStartLine() + ":" + unexpectedToken.getStartColumn());
95 }
96 else {
97 message.append(" at unknown location (probably end of file)");
98 }
99
100 if( comment != null ) {
101 message.append( "; " );
102 message.append( comment );
103 }
104
105 return message.toString();
106 }
107 }
108 |
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