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 * (a) the Software, and
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 * (b) any piece of software and/or hardware listed in the lrgrwrks.txt file if
 * one is included with the Software each a "Larger Work" to which the Software
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 * Software and the Larger Work(s), and to sublicense the foregoing rights on
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package com.oracle.graal.python.builtins.objects.traceback;

import com.oracle.graal.python.PythonLanguage;
import com.oracle.graal.python.builtins.PythonBuiltinClassType;
import com.oracle.graal.python.builtins.objects.frame.PFrame;
import com.oracle.graal.python.builtins.objects.object.PythonBuiltinObject;
import com.oracle.truffle.api.CompilerDirectives.CompilationFinal;
import com.oracle.truffle.api.strings.TruffleString;

import static com.oracle.graal.python.util.PythonUtils.tsLiteral;

public final class PTraceback extends PythonBuiltinObject {
    public static final int UNKNOWN_LINE_NUMBER = -2;

    private PFrame frame;
    private PFrame.Reference frameInfo;
    private int lineno = UNKNOWN_LINE_NUMBER;
    private int lasti;
    private PTraceback next;
    private LazyTraceback lazyTraceback;

    public PTraceback(PythonLanguage lang, PFrame frame, int lineno, PTraceback next) {
        this(lang, frame, lineno, -1, next);
    }

    public PTraceback(PythonLanguage lang, PFrame frame, int lineno, int lasti, PTraceback next) {
        super(PythonBuiltinClassType.PTraceback, PythonBuiltinClassType.PTraceback.getInstanceShape(lang));
        this.frame = frame;
        this.lineno = lineno;
        this.lasti = lasti;
        this.next = next;
    }

    public PTraceback(PythonLanguage lang, LazyTraceback lazyTraceback) {
        super(PythonBuiltinClassType.PTraceback, PythonBuiltinClassType.PTraceback.getInstanceShape(lang));
        this.lazyTraceback = lazyTraceback;
        this.frameInfo = lazyTraceback.getFrameInfo();
        this.frame = lazyTraceback.getFrame();
        this.lineno = lazyTraceback.getLineNo();
    }

    public PFrame getFrame() {
        return frame;
    }

    public void setFrame(PFrame frame) {
        this.frame = frame;
    }

    public PFrame.Reference getFrameInfo() {
        return frameInfo;
    }

    public int getLineno() {
        return lineno;
    }

    public int getLasti() {
        return lasti;
    }

    public LazyTraceback getLazyTraceback() {
        return lazyTraceback;
    }

    public PTraceback getNext() {
        return next;
    }

    public void setNext(PTraceback next) {
        this.next = next;
    }

    public void setLineno(int lineno) {
        this.lineno = lineno;
    }

    public void markMaterialized() {
        this.lazyTraceback = null;
    }

    public boolean isMaterialized() {
        return lazyTraceback == null;
    }

    static final String J_TB_FRAME = "tb_frame";
    static final String J_TB_NEXT = "tb_next";
    static final String J_TB_LASTI = "tb_lasti";
    static final String J_TB_LINENO = "tb_lineno";

    private static final TruffleString T_TB_FRAME = tsLiteral(J_TB_FRAME);
    private static final TruffleString T_TB_NEXT = tsLiteral(J_TB_NEXT);
    private static final TruffleString T_TB_LASTI = tsLiteral(J_TB_LASTI);
    private static final TruffleString T_TB_LINENO = tsLiteral(J_TB_LINENO);

    @CompilationFinal(dimensions = 1) private static final Object[] TB_DIR_FIELDS = new Object[]{T_TB_FRAME, T_TB_NEXT, T_TB_LASTI, T_TB_LINENO};

    static Object[] getTbFieldNames() {
        return TB_DIR_FIELDS.clone();
    }
}
