root/trunk/ProjectFortress/src/com/sun/fortress/compiler/phases/DisambiguatePhase.java @ 2406

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  Copyright 2008 Sun Microsystems, Inc.,
  4150 Network Circle, Santa Clara, California 95054, U.S.A.
  All rights reserved.

  U.S. Government Rights - Commercial software.
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  ******************************************************************************/

package com.sun.fortress.compiler.phases;

import com.sun.fortress.compiler.AnalyzeResult;
import com.sun.fortress.compiler.Disambiguator;
import com.sun.fortress.compiler.GlobalEnvironment;
import com.sun.fortress.compiler.IndexBuilder;
import com.sun.fortress.exceptions.MultipleStaticError;
import com.sun.fortress.exceptions.StaticError;
import com.sun.fortress.useful.Debug;

import edu.rice.cs.plt.collect.CollectUtil;
import edu.rice.cs.plt.iter.IterUtil;

public class DisambiguatePhase extends Phase {          

        public DisambiguatePhase(Phase parentPhase) {
                super(parentPhase);
        }               
        
    @Override
    public AnalyzeResult execute( ) throws StaticError {
        Debug.debug( Debug.Type.FORTRESS, 1, "Start phase Disambiguate" );
                AnalyzeResult previous = parentPhase.getResult();               

                // Build a new GlobalEnvironment consisting of all APIs in a global
                // repository combined with all APIs that have been processed in the previous
                // step.  For now, we are implementing pure static linking, so there is
                // no global repository.
                GlobalEnvironment rawApiEnv =
                        new GlobalEnvironment.FromMap(CollectUtil.union(repository.apis(),
                                        previous.apis()));

                // Rewrite all API ASTs so they include only fully qualified names, relying
                // on the rawApiEnv constructed in the previous step. Note that, after this
                // step, the rawApiEnv is stale and needs to be rebuilt with the new API ASTs.
                Disambiguator.ApiResult apiDR =
                        Disambiguator.disambiguateApis(previous.apiIterator(), rawApiEnv, repository.apis());
                if (!apiDR.isSuccessful()) {
                        throw new MultipleStaticError(apiDR.errors());
                }

                // Rebuild ApiIndices.
                IndexBuilder.ApiResult apiIR =
                        IndexBuilder.buildApis(apiDR.apis(), lastModified);
                if (!apiIR.isSuccessful()) {
                        throw new MultipleStaticError(apiIR.errors());
                }

                // Rebuild GlobalEnvironment.
                GlobalEnvironment apiEnv =
                        new GlobalEnvironment.FromMap(CollectUtil.union(repository.apis(),
                                        apiIR.apis()));

                Disambiguator.ComponentResult componentDR =
                        Disambiguator.disambiguateComponents(previous.componentIterator(), apiEnv,
                                        previous.components());
                if (!componentDR.isSuccessful()) {
                        throw new MultipleStaticError(componentDR.errors());
                }

                // Rebuild ComponentIndices.
                IndexBuilder.ComponentResult componentsDone =
                        IndexBuilder.buildComponents(componentDR.components(), lastModified);
                if (!componentsDone.isSuccessful()) {
                        throw new MultipleStaticError(componentsDone.errors());
                }

                return new AnalyzeResult(apiIR.apis(), componentsDone.components(), 
                                IterUtil.<StaticError>empty(), previous.typeEnvAtNode());
        
    }

}