Mercurial Hosting > luan
view src/luan/parser/ParseException.java @ 104:754e6030c029
remove parboiled and rewrite parser;
add jline;
git-svn-id: https://luan-java.googlecode.com/svn/trunk@105 21e917c8-12df-6dd8-5cb6-c86387c605b9
author | fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9> |
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date | Mon, 12 May 2014 05:57:53 +0000 |
parents | |
children | 735708619119 |
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line source
package luan.parser; public class ParseException extends Exception { public final String text; public final int iCurrent; public final int iHigh; ParseException(String msg,String text,int iCurrent,int iHigh) { super(msg); this.text = text; this.iCurrent = iCurrent; this.iHigh = iHigh; //System.out.println("iCurrent = "+iCurrent); //System.out.println("iHigh = "+iHigh); } private class Location { final int line; final int pos; Location(int index) { int line = 0; int i = -1; while(true) { int j = text.indexOf('\n',i+1); if( j == -1 || j > index ) break; i = j; line++; } this.line = line; this.pos = index - i - 1; } } private String[] lines() { return text.split("\n",-1); } public String getFancyMessage() { Location loc = new Location(iCurrent); String line = lines()[loc.line]; String msg = getMessage() + " (line " + (loc.line+1) + ", pos " + (loc.pos+1) + ")\n"; StringBuilder sb = new StringBuilder(msg); sb.append( line + "\n" ); for( int i=0; i<loc.pos; i++ ) { sb.append( line.charAt(i)=='\t' ? '\t' : ' ' ); } sb.append("^\n"); return sb.toString(); } }