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comparison core/src/luan/LuanSource.java @ 171:3dcb0f9bee82

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add core component git-svn-id: https://luan-java.googlecode.com/svn/trunk@172 21e917c8-12df-6dd8-5cb6-c86387c605b9
author fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
date Sun, 22 Jun 2014 05:41:22 +0000
parents src/luan/LuanSource.java@1f8b6edc2b08
children 04b86428dc50
comparison
equal deleted inserted replaced
170:7c792a328a83 171:3dcb0f9bee82
1 package luan;
2
3
4 public final class LuanSource {
5 public final String name;
6 public final String text;
7
8 public LuanSource(String name,String text) {
9 this.name = name;
10 this.text = text;
11 }
12
13 public static final class CompilerElement extends LuanElement {
14 public final LuanSource source;
15
16 public CompilerElement(LuanSource source) {
17 if( source==null )
18 throw new NullPointerException("source is null");
19 this.source = source;
20 }
21
22 @Override String location() {
23 return "Compiling " + source.name;
24 }
25 }
26
27 public static final class Element extends LuanElement {
28 public final LuanSource source;
29 public final int start;
30 public final int end;
31
32 public Element(LuanSource source,int start,int end) {
33 if( source==null )
34 throw new NullPointerException("source is null");
35 this.source = source;
36 this.start = start;
37 while( end > 0 && Character.isWhitespace(source.text.charAt(end-1)) ) {
38 end--;
39 }
40 this.end = end;
41 }
42
43 public String text() {
44 return source.text.substring(start,end);
45 }
46
47 @Override String location() {
48 return source.name + ':' + lineNumber();
49 }
50
51 private int lineNumber() {
52 int line = 0;
53 int i = -1;
54 do {
55 line++;
56 i = source.text.indexOf('\n',i+1);
57 } while( i != -1 && i < start );
58 return line;
59 }
60
61 }
62 }