Clover coverage report - PMD - 3.9 Coverage timestamp: Tue Dec 19 2006 09:38:44 EST FRAMES NO FRAMES |
file stats: | LOC: | 117 |  | Methods: | 0
| NCLOC: | 15 |  | Classes: | 1
Source file | Conditionals | Statements | Methods | TOTAL
CharStream.java | - | - | - | - |

1 |  | /* Generated By:JavaCC: Do not edit this line. CharStream.java Version 3.0 */
2 |  | /**
3 |  | * JSP Parser for PMD.
4 |  | * @author Pieter � Application Engineers NV/SA � http://www.ae.be
5 |  | */
6 |  |
7 |  | package net.sourceforge.pmd.jsp.ast;
8 |  |
9 |  | /**
10 |  | * This interface describes a character stream that maintains line and
11 |  | * column number positions of the characters. It also has the capability
12 |  | * to backup the stream to some extent. An implementation of this
13 |  | * interface is used in the TokenManager implementation generated by
14 |  | * JavaCCParser.
15 |  | * <p/>
16 |  | * All the methods except backup can be implemented in any fashion. backup
17 |  | * needs to be implemented correctly for the correct operation of the lexer.
18 |  | * Rest of the methods are all used to get information like line number,
19 |  | * column number and the String that constitutes a token and are not used
20 |  | * by the lexer. Hence their implementation won't affect the generated lexer's
21 |  | * operation.
22 |  | */
23 |  |
24 |  | public interface CharStream extends net.sourceforge.pmd.ast.CharStream {
25 |  |
26 |  | /**
27 |  | * Returns the next character from the selected input. The method
28 |  | * of selecting the input is the responsibility of the class
29 |  | * implementing this interface. Can throw any java.io.IOException.
30 |  | */
31 |  | char readChar() throws java.io.IOException;
32 |  |
33 |  | /**
34 |  | * Returns the column position of the character last read.
35 |  | *
36 |  | * @see #getEndColumn
37 |  | * @deprecated
38 |  | */
39 |  | int getColumn();
40 |  |
41 |  | /**
42 |  | * Returns the line number of the character last read.
43 |  | *
44 |  | * @see #getEndLine
45 |  | * @deprecated
46 |  | */
47 |  | int getLine();
48 |  |
49 |  | /**
50 |  | * Returns the column number of the last character for current token (being
51 |  | * matched after the last call to BeginTOken).
52 |  | */
53 |  | int getEndColumn();
54 |  |
55 |  | /**
56 |  | * Returns the line number of the last character for current token (being
57 |  | * matched after the last call to BeginTOken).
58 |  | */
59 |  | int getEndLine();
60 |  |
61 |  | /**
62 |  | * Returns the column number of the first character for current token (being
63 |  | * matched after the last call to BeginTOken).
64 |  | */
65 |  | int getBeginColumn();
66 |  |
67 |  | /**
68 |  | * Returns the line number of the first character for current token (being
69 |  | * matched after the last call to BeginTOken).
70 |  | */
71 |  | int getBeginLine();
72 |  |
73 |  | /**
74 |  | * Backs up the input stream by amount steps. Lexer calls this method if it
75 |  | * had already read some characters, but could not use them to match a
76 |  | * (longer) token. So, they will be used again as the prefix of the next
77 |  | * token and it is the implemetation's responsibility to do this right.
78 |  | */
79 |  | void backup(int amount);
80 |  |
81 |  | /**
82 |  | * Returns the next character that marks the beginning of the next token.
83 |  | * All characters must remain in the buffer between two successive calls
84 |  | * to this method to implement backup correctly.
85 |  | */
86 |  | char BeginToken() throws java.io.IOException;
87 |  |
88 |  | /**
89 |  | * Returns a string made up of characters from the marked token beginning
90 |  | * to the current buffer position. Implementations have the choice of returning
91 |  | * anything that they want to. For example, for efficiency, one might decide
92 |  | * to just return null, which is a valid implementation.
93 |  | */
94 |  | String GetImage();
95 |  |
96 |  | /**
97 |  | * Returns an array of characters that make up the suffix of length 'len' for
98 |  | * the currently matched token. This is used to build up the matched string
99 |  | * for use in actions in the case of MORE. A simple and inefficient
100 |  | * implementation of this is as follows :
101 |  | * <p/>
102 |  | * {
103 |  | * String t = GetImage();
104 |  | * return t.substring(t.length() - len, t.length()).toCharArray();
105 |  | * }
106 |  | */
107 |  | char[] GetSuffix(int len);
108 |  |
109 |  | /**
110 |  | * The lexer calls this function to indicate that it is done with the stream
111 |  | * and hence implementations can free any resources held by this class.
112 |  | * Again, the body of this function can be just empty and it will not
113 |  | * affect the lexer's operation.
114 |  | */
115 |  | void Done();
116 |  |
117 |  | }