resin-3.0.28

/* * Copyright (c) 1998-2006 Caucho Technology -- all rights reserved * * This file is part of Resin(R) Open Source * * Each copy or derived work must preserve the copyright notice and this * notice unmodified. * * Resin Open Source is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by * the Free Software Foundation; either version 2 of the License, or * (at your option) any later version. * * Resin Open Source is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE, or any warranty * of NON-INFRINGEMENT. See the GNU General Public License for more * details. * * You should have received a copy of the GNU General Public License * along with Resin Open Source; if not, write to the * * Free Software Foundation, Inc. * 59 Temple Place, Suite 330 * Boston, MA 02111-1307 USA * * @author Scott Ferguson */ package com.caucho.quercus.parser; import java.io.StringReader; import java.io.Reader; import java.io.IOException; import java.lang.reflect.Modifier; import java.util.ArrayList; import com.caucho.quercus.QuercusRuntimeException; import com.caucho.quercus.expr.*; import com.caucho.quercus.program.*; import com.caucho.quercus.Quercus; import com.caucho.quercus.Location; import com.caucho.quercus.env.Env; import com.caucho.quercus.env.Value; import com.caucho.quercus.env.BooleanValue; import com.caucho.quercus.env.LongValue; import com.caucho.quercus.env.DoubleValue; import com.caucho.quercus.env.CallbackFunction; import com.caucho.util.IntMap; import com.caucho.util.L10N; import com.caucho.util.CharBuffer; import com.caucho.vfs.IOExceptionWrapper; import com.caucho.vfs.Vfs; import com.caucho.vfs.Path; import com.caucho.vfs.StringPath; import com.caucho.vfs.ReadStream; /** * Parses a PHP program. */ public class QuercusParser { private final static L10N L = new L10N(QuercusParser.class); private final static int M_STATIC = 0x1; private final static int M_PUBLIC = 0x2; private final static int M_PROTECTED = 0x4; private final static int M_PRIVATE = 0x8; private final static int M_FINAL = 0x10; private final static int M_ABSTRACT = 0x20; private final static int M_INTERFACE = 0x40; private final static int IDENTIFIER = 256; private final static int STRING = 257; private final static int LONG = 258; private final static int DOUBLE = 259; private final static int LSHIFT = 260; private final static int RSHIFT = 261; private final static int PHP_END = 262; private final static int EQ = 263; private final static int DEREF = 264; private final static int LEQ = 268; private final static int GEQ = 269; private final static int NEQ = 270; private final static int EQUALS = 271; private final static int NEQUALS = 272; private final static int C_AND = 273; private final static int C_OR = 274; private final static int PLUS_ASSIGN = 278; private final static int MINUS_ASSIGN = 279; private final static int APPEND_ASSIGN = 280; private final static int MUL_ASSIGN = 281; private final static int DIV_ASSIGN = 282; private final static int MOD_ASSIGN = 283; private final static int AND_ASSIGN = 284; private final static int OR_ASSIGN = 285; private final static int XOR_ASSIGN = 286; private final static int LSHIFT_ASSIGN = 287; private final static int RSHIFT_ASSIGN = 288; private final static int INCR = 289; private final static int DECR = 290; private final static int SCOPE = 291; private final static int ESCAPED_STRING = 292; private final static int HEREDOC = 293; private final static int ARRAY_RIGHT = 294; private final static int SIMPLE_STRING_ESCAPE = 295; private final static int COMPLEX_STRING_ESCAPE = 296; private final static int FIRST_IDENTIFIER_LEXEME = 512; private final static int ECHO = 512; private final static int NULL = 513; private final static int IF = 514; private final static int WHILE = 515; private final static int FUNCTION = 516; private final static int CLASS = 517; private final static int NEW = 518; private final static int RETURN = 519; private final static int VAR = 520; private final static int PRIVATE = 521; private final static int PROTECTED = 522; private final static int PUBLIC = 523; private final static int FOR = 524; private final static int DO = 525; private final static int BREAK = 526; private final static int CONTINUE = 527; private final static int ELSE = 528; private final static int EXTENDS = 529; private final static int STATIC = 530; private final static int INCLUDE = 531; private final static int REQUIRE = 532; private final static int INCLUDE_ONCE = 533; private final static int REQUIRE_ONCE = 534; private final static int UNSET = 535; private final static int FOREACH = 536; private final static int AS = 537; private final static int TEXT = 538; private final static int ISSET = 539; private final static int SWITCH = 540; private final static int CASE = 541; private final static int DEFAULT = 542; private final static int EXIT = 543; private final static int GLOBAL = 544; private final static int ELSEIF = 545; private final static int PRINT = 546; private final static int SYSTEM_STRING = 547; private final static int SIMPLE_SYSTEM_STRING = 548; private final static int COMPLEX_SYSTEM_STRING = 549; private final static int TEXT_ECHO = 550; private final static int ENDIF = 551; private final static int ENDWHILE = 552; private final static int ENDFOR = 553; private final static int ENDFOREACH = 554; private final static int ENDSWITCH = 555; private final static int XOR_RES = 556; private final static int AND_RES = 557; private final static int OR_RES = 558; private final static int LIST = 559; private final static int THIS = 560; private final static int TRUE = 561; private final static int FALSE = 562; private final static int CLONE = 563; private final static int INSTANCEOF = 564; private final static int CONST = 565; private final static int ABSTRACT = 566; private final static int FINAL = 567; private final static int DIE = 568; private final static int THROW = 569; private final static int TRY = 570; private final static int CATCH = 571; private final static int INTERFACE = 572; private final static int IMPLEMENTS = 573; private final static int LAST_IDENTIFIER_LEXEME = 1024; private final static IntMap _insensitiveReserved = new IntMap(); private final static IntMap _reserved = new IntMap(); private Quercus _quercus; private Path _sourceFile; private ParserLocation _parserLocation = new ParserLocation(); private boolean _hasCr; private int _peek = -1; private Reader _is; private CharBuffer _sb = new CharBuffer(); private int _peekToken = -1; private String _lexeme = ""; private String _heredocEnd = null; private GlobalScope _globalScope = new GlobalScope(); private boolean _returnsReference = false; private Scope _scope = _globalScope; private InterpretedClassDef _quercusClass; private FunctionInfo _function; private boolean _isTop; QuercusParser(Quercus quercus) { _quercus = quercus; } public QuercusParser(Quercus quercus, Path sourceFile, Reader is) { _quercus = quercus; init(sourceFile, is); } private void init(Path sourceFile) throws IOException { init(sourceFile, sourceFile.openRead().getReader()); } private void init(Path sourceFile, Reader is) { _sourceFile = sourceFile; _is = is; if (sourceFile != null) _parserLocation.setFileName(sourceFile.getPath()); else _parserLocation.setFileName("eval:"); _parserLocation.setLineNumber(1); _peek = -1; _peekToken = -1; } public void setLocation(String fileName, int line)