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fangyidong
2008-11-25 13:25:49 +00:00
commit d65cf1822b
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package org.json.simple.parser;
import org.json.simple.rope.Rope;
%%
%{
private Rope sb=new Rope();
%}
%switch
%unicode
%state STRING_BEGIN
HEX_D = [a-fA-F0-9]
INT = [-]?[0-9]+
DOUBLE = {INT}((\.[0-9]+)?([eE][-+]?[0-9]+)?)
WS = [ \t\r\n]
%%
<STRING_BEGIN> \\\" {sb.append('"');}
<STRING_BEGIN> \\\\ {sb.append('\\');}
<STRING_BEGIN> \\\/ {sb.append('/');}
<STRING_BEGIN> \\b {sb.append('\b');}
<STRING_BEGIN> \\f {sb.append('\f');}
<STRING_BEGIN> \\n {sb.append('\n');}
<STRING_BEGIN> \\r {sb.append('\r');}
<STRING_BEGIN> \\t {sb.append('\t');}
<STRING_BEGIN> \\u{HEX_D}{HEX_D}{HEX_D}{HEX_D} { int ch=Integer.parseInt(yytext().substring(2),16);
sb.append((char)ch);
}
<STRING_BEGIN> \" { yybegin(YYINITIAL);return new Yytoken(Yytoken.TYPE_VALUE,sb.toString());}
<STRING_BEGIN> . { sb.append(yytext());}
<YYINITIAL> \" { sb.clear();yybegin(STRING_BEGIN);}
<YYINITIAL> {INT} { Long val=Long.valueOf(yytext()); return new Yytoken(Yytoken.TYPE_VALUE,val);}
<YYINITIAL> {DOUBLE} { Double val=Double.valueOf(yytext()); return new Yytoken(Yytoken.TYPE_VALUE,val);}
<YYINITIAL> "true"|"false" { Boolean val=Boolean.valueOf(yytext()); return new Yytoken(Yytoken.TYPE_VALUE,val);}
<YYINITIAL> "null" { return new Yytoken(Yytoken.TYPE_VALUE,null);}
<YYINITIAL> "{" { return new Yytoken(Yytoken.TYPE_LEFT_BRACE,null);}
<YYINITIAL> "}" { return new Yytoken(Yytoken.TYPE_RIGHT_BRACE,null);}
<YYINITIAL> "[" { return new Yytoken(Yytoken.TYPE_LEFT_SQUARE,null);}
<YYINITIAL> "]" { return new Yytoken(Yytoken.TYPE_RIGHT_SQUARE,null);}
<YYINITIAL> "," { return new Yytoken(Yytoken.TYPE_COMMA,null);}
<YYINITIAL> ":" { return new Yytoken(Yytoken.TYPE_COLON,null);}
<YYINITIAL> {WS} {}