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 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
 *
 * The Universal Permissive License (UPL), Version 1.0
 *
 * Subject to the condition set forth below, permission is hereby granted to any
 * person obtaining a copy of this software, associated documentation and/or
 * data (collectively the "Software"), free of charge and under any and all
 * copyright rights in the Software, and any and all patent rights owned or
 * freely licensable by each licensor hereunder covering either (i) the
 * unmodified Software as contributed to or provided by such licensor, or (ii)
 * the Larger Works (as defined below), to deal in both
 *
 * (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
 * either these or other terms.
 *
 * This license is subject to the following condition:
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 * The above copyright notice and either this complete permission notice or at a
 * minimum a reference to the UPL must be included in all copies or substantial
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package com.oracle.truffle.api.dsl;

import com.oracle.truffle.api.CompilerDirectives.TruffleBoundary;
import com.oracle.truffle.api.nodes.Node;
import java.util.Arrays;
import java.util.Objects;

/**
 * Thrown by the generated code of Truffle-DSL if no compatible Specialization could be found for
 * the provided values.
 *
 * @since 0.8 or earlier
 */
public final class UnsupportedSpecializationException extends RuntimeException {

    private static final long serialVersionUID = -2122892028296836269L;

    private final Node node;
    private final Node[] suppliedNodes;
    private final Object[] suppliedValues;

    /** @since 0.8 or earlier */
    @TruffleBoundary
    public UnsupportedSpecializationException(Node node, Node[] suppliedNodes, Object... suppliedValues) {
        Objects.requireNonNull(suppliedNodes, "The suppliedNodes parameter must not be null.");
        if (suppliedNodes.length != suppliedValues.length) {
            throw new IllegalArgumentException("The length of suppliedNodes must match the length of suppliedValues.");
        }
        this.node = node;
        this.suppliedNodes = suppliedNodes;
        this.suppliedValues = suppliedValues;
    }

    /** @since 0.8 or earlier */
    @Override
    public String getMessage() {
        StringBuilder str = new StringBuilder();
        str.append("Unexpected values provided for ").append(node).append(": ").append(Arrays.toString(suppliedValues)).append(", [");
        for (int i = 0; i < suppliedValues.length; i++) {
            str.append(i == 0 ? "" : ",").append(suppliedValues[i] == null ? "null" : suppliedValues[i].getClass().getSimpleName());
        }
        return str.append("]").toString();
    }

    /**
     * Returns the {@link Node} that caused the this {@link UnsupportedSpecializationException}.
     *
     * @since 0.8 or earlier
     */
    public Node getNode() {
        return node;
    }

    /**
     * Returns the children of the {@link Node} returned by {@link #getNode()} which produced the
     * values returned by {@link #getSuppliedValues()}. The array returned by
     * {@link #getSuppliedNodes()} has the same length as the array returned by
     * {@link #getSuppliedValues()}. Never returns null.
     *
     * @since 0.8 or earlier
     */
    public Node[] getSuppliedNodes() {
        return suppliedNodes;
    }

    /**
     * Returns the dynamic values that were supplied to the node.The array returned by
     * {@link #getSuppliedNodes()} has the same length as the array returned by
     * {@link #getSuppliedValues()}. Never returns null.
     *
     * @since 0.8 or earlier
     */
    public Object[] getSuppliedValues() {
        return suppliedValues;
    }

}