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 * The Universal Permissive License (UPL), Version 1.0
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 * person obtaining a copy of this software, associated documentation and/or
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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
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package org.graalvm.wasm.exception;

public enum Failure {
    UNSPECIFIED_TRAP(Type.TRAP, "unspecified"),
    INT_DIVIDE_BY_ZERO(Type.TRAP, "integer divide by zero"),
    INT_OVERFLOW(Type.TRAP, "integer overflow"),

    UNSPECIFIED_EXHAUSTION(Type.EXHAUSTION, "unspecified"),

    UNSPECIFIED_MALFORMED(Type.MALFORMED, "unspecified"),

    UNSPECIFIED_INVALID(Type.INVALID, "unspecified"),
    RETURN_SIZE_MISMATCH(Type.INVALID, "type mismatch"),
    EMPTY_STACK(Type.INVALID, "type mismatch"),
    TABLE_TARGET_MISMATCH(Type.INVALID, "type mismatch"),
    UNEXPECTED_TYPE(Type.INVALID, "type mismatch"),
    MULTIPLE_RETURN_VALUES(Type.INVALID, "multiple return values"),
    LOOP_INPUT(Type.INVALID, "non-empty loop input type"),

    UNSPECIFIED_UNLINKABLE(Type.UNLINKABLE, "unspecified"),

    UNSPECIFIED_INTERNAL(Type.INTERNAL, "unspecified"),
    INVALID_STACK_SHRINK_SIZE(Type.INTERNAL, "invalid stack shrink size"),
    OTHER_ARITHMETIC_EXCEPTION(Type.INTERNAL, "non-standard arithmetic exception");

    public enum Type {
        TRAP("trap"),
        EXHAUSTION("exhaustion"),
        MALFORMED("malformed"),
        INVALID("invalid"),
        UNLINKABLE("unlinkable"),
        INTERNAL("internal");

        public final String name;

        Type(String name) {
            this.name = name;
        }
    }

    public final Type type;
    public final String name;

    Failure(Type type, String name) {
        this.type = type;
        this.name = name;
    }

    public static Failure fromArithmeticException(ArithmeticException exception) {
        switch (exception.getMessage()) {
            case "/ by zero":
            case "BigInteger divide by zero":
                return Failure.INT_DIVIDE_BY_ZERO;
            default:
                return Failure.OTHER_ARITHMETIC_EXCEPTION;
        }
    }
}