/*
 * Copyright (c) 2009, 2014, Oracle and/or its affiliates. All rights reserved.
 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
 *
 * This code is free software; you can redistribute it and/or modify it
 * under the terms of the GNU General Public License version 2 only, as
 * published by the Free Software Foundation.
 *
 * This code is distributed in the hope that it will be useful, but WITHOUT
 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
 * version 2 for more details (a copy is included in the LICENSE file that
 * accompanied this code).
 *
 * You should have received a copy of the GNU General Public License version
 * 2 along with this work; if not, write to the Free Software Foundation,
 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
 *
 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
 * or visit www.oracle.com if you need additional information or have any
 * questions.
 */
package com.oracle.graal.java;

import com.oracle.graal.graphbuilderconf.*;
import com.oracle.graal.nodes.*;
import com.oracle.graal.nodes.spi.*;
import com.oracle.graal.phases.*;
import com.oracle.graal.phases.tiers.*;
import com.oracle.jvmci.meta.*;

/**
 * Parses the bytecodes of a method and builds the IR graph.
 */
public class GraphBuilderPhase extends BasePhase<HighTierContext> {

    private final GraphBuilderConfiguration graphBuilderConfig;

    public GraphBuilderPhase(GraphBuilderConfiguration config) {
        this.graphBuilderConfig = config;
    }

    @Override
    protected void run(StructuredGraph graph, HighTierContext context) {
        new Instance(context.getMetaAccess(), context.getStampProvider(), context.getConstantReflection(), graphBuilderConfig, context.getOptimisticOptimizations(), null).run(graph);
    }

    public GraphBuilderConfiguration getGraphBuilderConfig() {
        return graphBuilderConfig;
    }

    // Fully qualified name is a workaround for JDK-8056066
    public static class Instance extends com.oracle.graal.phases.Phase {

        protected final MetaAccessProvider metaAccess;
        protected final StampProvider stampProvider;
        protected final ConstantReflectionProvider constantReflection;
        protected final GraphBuilderConfiguration graphBuilderConfig;
        protected final OptimisticOptimizations optimisticOpts;
        private final IntrinsicContext initialIntrinsicContext;

        public Instance(MetaAccessProvider metaAccess, StampProvider stampProvider, ConstantReflectionProvider constantReflection, GraphBuilderConfiguration graphBuilderConfig,
                        OptimisticOptimizations optimisticOpts, IntrinsicContext initialIntrinsicContext) {
            this.graphBuilderConfig = graphBuilderConfig;
            this.optimisticOpts = optimisticOpts;
            this.metaAccess = metaAccess;
            this.stampProvider = stampProvider;
            this.constantReflection = constantReflection;
            this.initialIntrinsicContext = initialIntrinsicContext;
        }

        @Override
        protected void run(StructuredGraph graph) {
            createBytecodeParser(graph, null, graph.method(), graph.getEntryBCI(), initialIntrinsicContext).buildRootMethod();
        }

        /* Hook for subclasses of Instance to provide a subclass of BytecodeParser. */
        protected BytecodeParser createBytecodeParser(StructuredGraph graph, BytecodeParser parent, ResolvedJavaMethod method, int entryBCI, IntrinsicContext intrinsicContext) {
            return new BytecodeParser(this, graph, parent, method, entryBCI, intrinsicContext);
        }
    }
}