org.mozilla.javascript.InterpreterData Maven / Gradle / Ivy

Go to download
Show more of this group Show more artifacts with this name
Show all versions of rhino Show documentation
The Rhino JavaScript Engine for Java
The newest version!
/* -*- Mode: java; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 4 -*-
 *
 * This Source Code Form is subject to the terms of the Mozilla Public
 * License, v. 2.0. If a copy of the MPL was not distributed with this
 * file, You can obtain one at http://mozilla.org/MPL/2.0/. */

package org.mozilla.javascript;

import java.io.Serializable;

import org.mozilla.javascript.debug.DebuggableScript;

final class InterpreterData implements Serializable, DebuggableScript
{
    static final long serialVersionUID = 5067677351589230234L;

    static final int INITIAL_MAX_ICODE_LENGTH = 1024;
    static final int INITIAL_STRINGTABLE_SIZE = 64;
    static final int INITIAL_NUMBERTABLE_SIZE = 64;

    InterpreterData(int languageVersion, String sourceFile,
                    String encodedSource, boolean isStrict)
    {
        this.languageVersion = languageVersion;
        this.itsSourceFile = sourceFile;
        this.encodedSource = encodedSource;
        this.isStrict = isStrict;
        init();
    }

    InterpreterData(InterpreterData parent)
    {
        this.parentData = parent;
        this.languageVersion = parent.languageVersion;
        this.itsSourceFile = parent.itsSourceFile;
        this.encodedSource = parent.encodedSource;

        init();
    }

    private void init()
    {
        itsICode = new byte[INITIAL_MAX_ICODE_LENGTH];
        itsStringTable = new String[INITIAL_STRINGTABLE_SIZE];
    }

    String itsName;
    String itsSourceFile;
    boolean itsNeedsActivation;
    int itsFunctionType;

    String[] itsStringTable;
    double[] itsDoubleTable;
    InterpreterData[] itsNestedFunctions;
    Object[] itsRegExpLiterals;

    byte[] itsICode;

    int[] itsExceptionTable;

    int itsMaxVars;
    int itsMaxLocals;
    int itsMaxStack;
    int itsMaxFrameArray;

    // see comments in NativeFuncion for definition of argNames and argCount
    String[] argNames;
    boolean[] argIsConst;
    int argCount;

    int itsMaxCalleeArgs;

    String encodedSource;
    int encodedSourceStart;
    int encodedSourceEnd;

    int languageVersion;

    boolean isStrict;
    boolean topLevel;

    Object[] literalIds;

    UintMap longJumps;

    int firstLinePC = -1; // PC for the first LINE icode

    InterpreterData parentData;

    boolean evalScriptFlag; // true if script corresponds to eval() code

    public boolean isTopLevel()
    {
        return topLevel;
    }

    public boolean isFunction()
    {
        return itsFunctionType != 0;
    }

    public String getFunctionName()
    {
        return itsName;
    }

    public int getParamCount()
    {
        return argCount;
    }

    public int getParamAndVarCount()
    {
        return argNames.length;
    }

    public String getParamOrVarName(int index)
    {
        return argNames[index];
    }

    public boolean getParamOrVarConst(int index)
    {
        return argIsConst[index];
    }

    public String getSourceName()
    {
        return itsSourceFile;
    }

    public boolean isGeneratedScript()
    {
        return ScriptRuntime.isGeneratedScript(itsSourceFile);
    }

    public int[] getLineNumbers()
    {
        return Interpreter.getLineNumbers(this);
    }

    public int getFunctionCount()
    {
        return (itsNestedFunctions == null) ? 0 : itsNestedFunctions.length;
    }

    public DebuggableScript getFunction(int index)
    {
        return itsNestedFunctions[index];
    }

    public DebuggableScript getParent()
    {
         return parentData;
    }
}