Symbol.java

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package com.microsoft.z3;

import com.microsoft.z3.enumerations.Z3_symbol_kind;

public class Symbol extends Z3Object
{
    protected Z3_symbol_kind getKind()
    {
        return Z3_symbol_kind.fromInt(Native.getSymbolKind(getContext().nCtx(),
                getNativeObject()));
    }

    public boolean isIntSymbol()
    {
        return getKind() == Z3_symbol_kind.Z3_INT_SYMBOL;
    }

    public boolean isStringSymbol()
    {
        return getKind() == Z3_symbol_kind.Z3_STRING_SYMBOL;
    }

    public boolean equals(Object o)
    {
        Symbol casted = null;
        try {
            casted = Symbol.class.cast(o);
        }
        catch (ClassCastException e) {
            return false;
        }

        return this.getNativeObject() == casted.getNativeObject();
    }

    public String toString()
    {
        try
        {
            if (isIntSymbol())
                return Integer.toString(((IntSymbol) this).getInt());
            else if (isStringSymbol())
                return ((StringSymbol) this).getString();
            else
                return new String(
                        "Z3Exception: Unknown symbol kind encountered.");
        } catch (Z3Exception ex)
        {
            return new String("Z3Exception: " + ex.getMessage());
        }
    }

    protected Symbol(Context ctx, long obj)
    {
        super(ctx, obj);
    }

    static Symbol create(Context ctx, long obj)
    {
        switch (Z3_symbol_kind.fromInt(Native.getSymbolKind(ctx.nCtx(), obj)))
        {
        case Z3_INT_SYMBOL:
            return new IntSymbol(ctx, obj);
        case Z3_STRING_SYMBOL:
            return new StringSymbol(ctx, obj);
        default:
            throw new Z3Exception("Unknown symbol kind encountered");
        }
    }
}