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207 lines
9.4 KiB
Plaintext
207 lines
9.4 KiB
Plaintext
/*
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* Copyright (C) 2010-2016 JPEXS, All rights reserved.
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 3.0 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library.
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*/
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package com.jpexs.decompiler.flash.tags.text;
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%%
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%public
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%class TextLexer
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%final
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%unicode
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%char
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%line
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%column
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%type ParsedSymbol
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%throws TextParseException
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%{
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private boolean finish = false;
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private boolean parameter = false;
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private StringBuilder string = null;
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private int repeatNum = 1;
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/**
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* Create an empty lexer, yyrset will be called later to reset and assign
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* the reader
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*/
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public TextLexer() {
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}
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public int yychar() {
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return yychar;
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}
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public int yyline() {
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return yyline + 1;
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}
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%}
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Parameter = [a-z_][a-z0-9_]*
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Value = [^ \r\n\]\"\u00A7]+
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Divider = [ \r\n]+
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HexDigit = [0-9a-fA-F]
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StringCharacter = [^\r\n\"\\]
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OIdentifierCharacter = [^\r\n\u00A7\\]
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DecIntegerLiteral = (0 | [1-9][0-9]*) [ui]?
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LineTerminator = \r|\n|\r\n
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PositiveNumberLiteral = 0 | [1-9][0-9]*
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%state PARAMETER,VALUE,OIDENTIFIER,STRING
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%%
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<YYINITIAL> {
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"[" {
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parameter = true;
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yybegin(PARAMETER);
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if (string != null){
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String ret = string.toString();
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string = null;
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return new ParsedSymbol(SymbolType.TEXT, ret);
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}
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}
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/* escape sequences */
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"\\[" { if (string == null) string = new StringBuilder(); string.append('['); }
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"\\]" { if (string == null) string = new StringBuilder(); string.append(']'); }
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"\\b" { if (string == null) string = new StringBuilder(); string.append('\b'); }
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"\\t" { if (string == null) string = new StringBuilder(); string.append('\t'); }
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"\\n" { if (string == null) string = new StringBuilder(); string.append('\n'); }
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"\\f" { if (string == null) string = new StringBuilder(); string.append('\f'); }
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"\\r" { if (string == null) string = new StringBuilder(); string.append('\r'); }
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"\\\"" { if (string == null) string = new StringBuilder(); string.append('\"'); }
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"\\'" { if (string == null) string = new StringBuilder(); string.append('\''); }
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"\\\\" { if (string == null) string = new StringBuilder(); string.append('\\'); }
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\\x{HexDigit}{HexDigit} { char val = (char) Integer.parseInt(yytext().substring(2), 16);
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string.append(val); }
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/* error cases */
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\\. { throw new TextParseException("Illegal escape sequence \"" + yytext() + "\"", yyline + 1); }
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. { if (string == null) string = new StringBuilder(); string.append(yytext()); }
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<<EOF>> { if (finish) {return null;} else {finish=true; return new ParsedSymbol(SymbolType.TEXT, string == null ? null : string.toString());}}
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}
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<PARAMETER> {
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{Divider} {}
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{Parameter} {
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yybegin(VALUE);
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return new ParsedSymbol(SymbolType.PARAMETER_IDENTIFIER, yytext());
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}
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"]" {
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yybegin(YYINITIAL);
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parameter = false;
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}
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}
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<VALUE> {
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{Divider} {}
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\" {
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string = new StringBuilder();
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yybegin(STRING);
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}
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"\u00A7" {
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string = new StringBuilder();
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yybegin(OIDENTIFIER);
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}
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{Parameter} {
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return new ParsedSymbol(SymbolType.PARAMETER_IDENTIFIER, yytext());
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}
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{Value} {
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return new ParsedSymbol(SymbolType.PARAMETER_VALUE, yytext());
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}
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"]" {
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yybegin(YYINITIAL);
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parameter = false;
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}
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}
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<OIDENTIFIER> {
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"\u00A7" {
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yybegin(VALUE);
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repeatNum = 1;
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// length also includes the trailing quote
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String ret = string.toString();
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string = null;
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return new ParsedSymbol(SymbolType.PARAMETER_VALUE, ret);
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}
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{OIdentifierCharacter} { for(int r=0;r<repeatNum;r++) string.append(yytext()); repeatNum = 1;}
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/* escape sequences */
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"\\b" { for(int r=0;r<repeatNum;r++) string.append('\b'); repeatNum = 1;}
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"\\t" { for(int r=0;r<repeatNum;r++) string.append('\t'); repeatNum = 1;}
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"\\n" { for(int r=0;r<repeatNum;r++) string.append('\n'); repeatNum = 1;}
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"\\f" { for(int r=0;r<repeatNum;r++) string.append('\f'); repeatNum = 1;}
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"\\\u00A7" { for(int r=0;r<repeatNum;r++) string.append('\u00A7'); repeatNum = 1;}
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"\\r" { for(int r=0;r<repeatNum;r++) string.append('\r'); repeatNum = 1;}
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"\\\\" { for(int r=0;r<repeatNum;r++) string.append('\\'); repeatNum = 1;}
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\\x{HexDigit}{2} { char val = (char) Integer.parseInt(yytext().substring(2), 16);
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for(int r=0;r<repeatNum;r++) string.append(val); repeatNum = 1;}
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\\u{HexDigit}{4} { char val = (char) Integer.parseInt(yytext().substring(2), 16);
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for(int r=0;r<repeatNum;r++) string.append(val); repeatNum = 1;}
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\\\{{DecIntegerLiteral}\} { repeatNum = Integer.parseInt(yytext().substring(2, yytext().length()-1)); }
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/* escape sequences */
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\\. { throw new TextParseException("Illegal escape sequence \"" + yytext() + "\"", yyline + 1); }
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{LineTerminator} { yybegin(VALUE); yyline++;}
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}
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<STRING> {
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\" {
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yybegin(VALUE);
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repeatNum = 1;
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// length also includes the trailing quote
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String tos = string.toString();
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string = null;
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return new ParsedSymbol(SymbolType.PARAMETER_VALUE, tos);
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}
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{StringCharacter} { for(int r=0;r<repeatNum;r++) string.append(yytext()); repeatNum = 1; }
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/* escape sequences */
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"\\b" { for(int r=0;r<repeatNum;r++) string.append('\b'); repeatNum = 1;}
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"\\t" { for(int r=0;r<repeatNum;r++) string.append('\t'); repeatNum = 1;}
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"\\n" { for(int r=0;r<repeatNum;r++) string.append('\n'); repeatNum = 1;}
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"\\f" { for(int r=0;r<repeatNum;r++) string.append('\f'); repeatNum = 1;}
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"\\\u00A7" { for(int r=0;r<repeatNum;r++) string.append('\u00A7'); repeatNum = 1;}
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"\\r" { for(int r=0;r<repeatNum;r++) string.append('\r'); repeatNum = 1;}
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"\\\"" { for(int r=0;r<repeatNum;r++) string.append('\"'); repeatNum = 1;}
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"\\'" { for(int r=0;r<repeatNum;r++) string.append('\''); repeatNum = 1;}
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"\\\\" { for(int r=0;r<repeatNum;r++) string.append('\\'); repeatNum = 1;}
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\\x{HexDigit}{2} { char val = (char) Integer.parseInt(yytext().substring(2), 16);
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for(int r=0;r<repeatNum;r++) string.append(val); repeatNum = 1; }
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\\u{HexDigit}{4} { char val = (char) Integer.parseInt(yytext().substring(2), 16);
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for(int r=0;r<repeatNum;r++) string.append(val); repeatNum = 1; }
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\\\{{PositiveNumberLiteral}\} { repeatNum = Integer.parseInt(yytext().substring(2, yytext().length()-1)); }
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/* error cases */
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\\. { repeatNum = 1; /* ignore illegal character escape */ }
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}
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/* error fallback */
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[^] { if (!parameter) { if (string == null) string = new StringBuilder(); string.append(yytext()); } }
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<<EOF>> { return null; }
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