Mercurial Hosting > luan
diff core/src/luan/LuanSource.java @ 171:3dcb0f9bee82
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> |
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date | Sun, 22 Jun 2014 05:41:22 +0000 |
parents | src/luan/LuanSource.java@1f8b6edc2b08 |
children | 04b86428dc50 |
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--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/core/src/luan/LuanSource.java Sun Jun 22 05:41:22 2014 +0000 @@ -0,0 +1,62 @@ +package luan; + + +public final class LuanSource { + public final String name; + public final String text; + + public LuanSource(String name,String text) { + this.name = name; + this.text = text; + } + + public static final class CompilerElement extends LuanElement { + public final LuanSource source; + + public CompilerElement(LuanSource source) { + if( source==null ) + throw new NullPointerException("source is null"); + this.source = source; + } + + @Override String location() { + return "Compiling " + source.name; + } + } + + public static final class Element extends LuanElement { + public final LuanSource source; + public final int start; + public final int end; + + public Element(LuanSource source,int start,int end) { + if( source==null ) + throw new NullPointerException("source is null"); + this.source = source; + this.start = start; + while( end > 0 && Character.isWhitespace(source.text.charAt(end-1)) ) { + end--; + } + this.end = end; + } + + public String text() { + return source.text.substring(start,end); + } + + @Override String location() { + return source.name + ':' + lineNumber(); + } + + private int lineNumber() { + int line = 0; + int i = -1; + do { + line++; + i = source.text.indexOf('\n',i+1); + } while( i != -1 && i < start ); + return line; + } + + } +}