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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
 * data (collectively the "Software"), free of charge and under any and all
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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
 * is contributed by such licensors),
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 * without restriction, including without limitation the rights to copy, create
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 * Software and the Larger Work(s), and to sublicense the foregoing rights on
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 * This license is subject to the following condition:
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package org.graalvm.wasm.exception;

import com.oracle.truffle.api.CompilerAsserts;
import com.oracle.truffle.api.exception.AbstractTruffleException;
import com.oracle.truffle.api.interop.ExceptionType;
import com.oracle.truffle.api.interop.InteropLibrary;
import com.oracle.truffle.api.interop.UnknownIdentifierException;
import com.oracle.truffle.api.interop.UnsupportedMessageException;
import com.oracle.truffle.api.library.ExportLibrary;
import com.oracle.truffle.api.library.ExportMessage;
import com.oracle.truffle.api.nodes.Node;
import org.graalvm.wasm.nodes.WasmBlockNode;

import static com.oracle.truffle.api.CompilerDirectives.TruffleBoundary;

@ExportLibrary(InteropLibrary.class)
@SuppressWarnings("static-method")
public final class WasmException extends AbstractTruffleException {
    private static final long serialVersionUID = -84137683950579647L;

    private final Failure failure;

    private WasmException(String message, Node location, Failure failure) {
        super(message, location);
        CompilerAsserts.neverPartOfCompilation();
        this.failure = failure;
    }

    @TruffleBoundary
    public static WasmException create(Failure failure, Node location, String message) {
        return new WasmException(String.format(message), location, failure);
    }

    @TruffleBoundary
    public static WasmException create(Failure failure, Node location) {
        return create(failure, location, failure.name);
    }

    @TruffleBoundary
    public static WasmException create(Failure failure, String message) {
        return create(failure, null, message);
    }

    @TruffleBoundary
    public static WasmException format(Failure failure, String format, Object... args) {
        return create(failure, String.format(format, args));
    }

    @TruffleBoundary
    public static WasmException format(Failure failure, Node location, String format, Object... args) {
        return create(failure, location, String.format(format, args));
    }

    @TruffleBoundary
    public static WasmException fromArithmeticException(WasmBlockNode location, ArithmeticException exception) {
        return create(Failure.fromArithmeticException(exception), location, exception.getMessage());
    }

    @ExportMessage
    public boolean hasMembers() {
        return true;
    }

    @ExportMessage
    public ExceptionType getExceptionType() {
        switch (failure.type) {
            case MALFORMED:
            case INVALID:
            case UNLINKABLE:
                return ExceptionType.PARSE_ERROR;
            case INTERNAL:
            case EXHAUSTION:
            case TRAP:
            default:
                return ExceptionType.RUNTIME_ERROR;
        }
    }

    @ExportMessage
    @SuppressWarnings({"unused", "static-method"})
    Object getMembers(boolean includeInternal) throws UnsupportedMessageException {
        throw UnsupportedMessageException.create();
    }

    @ExportMessage
    @TruffleBoundary
    public Object readMember(String member) throws UnknownIdentifierException {
        switch (member) {
            case "message":
                return getMessage();
            case "failureType":
                return failure.type.name;
            case "failure":
                return failure.name;
            default:
                throw UnknownIdentifierException.create(member);
        }
    }

    @ExportMessage
    @TruffleBoundary
    public boolean isMemberReadable(String member) {
        switch (member) {
            case "message":
            case "failureType":
            case "failure":
                return true;
            default:
                return false;
        }
    }
}