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 * (b) any piece of software and/or hardware listed in the lrgrwrks.txt file if
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package com.oracle.truffle.js.nodes.module;

import com.oracle.truffle.api.frame.VirtualFrame;
import com.oracle.truffle.api.instrumentation.Tag;
import com.oracle.truffle.api.profiles.ValueProfile;
import com.oracle.truffle.js.nodes.JavaScriptNode;
import com.oracle.truffle.js.nodes.access.JSWriteFrameSlotNode;
import com.oracle.truffle.js.nodes.control.StatementNode;
import com.oracle.truffle.js.runtime.Errors;
import com.oracle.truffle.js.runtime.Evaluator;
import com.oracle.truffle.js.runtime.JSContext;
import com.oracle.truffle.js.runtime.objects.ExportResolution;
import com.oracle.truffle.js.runtime.objects.JSModuleRecord;

import java.util.Set;

Resolves a named import binding and writes the resolved binding into the frame. Throws a
SyntaxError if the imported binding could not be found or was ambiguous.
See Also:
ReadImportBindingNode/**
 * Resolves a named import binding and writes the resolved binding into the frame. Throws a
 * SyntaxError if the imported binding could not be found or was ambiguous.
 *
 * @see ReadImportBindingNode
 */
public class ResolveNamedImportNode extends StatementNode {

    private final JSContext context;
    private final String moduleRequest;
    private final String importName;
    @Child private JavaScriptNode moduleNode;
    @Child private JSWriteFrameSlotNode writeLocalNode;
    private final ValueProfile resolutionProfile = ValueProfile.createClassProfile();

    ResolveNamedImportNode(JSContext context, JavaScriptNode moduleNode, String moduleRequest, String importName, JSWriteFrameSlotNode writeLocalNode) {
        this.context = context;
        this.moduleRequest = moduleRequest;
        this.moduleNode = moduleNode;
        this.importName = importName;
        this.writeLocalNode = writeLocalNode;
    }

    public static StatementNode create(JSContext context, JavaScriptNode moduleNode, String moduleRequest, String importName, JSWriteFrameSlotNode writeLocalNode) {
        return new ResolveNamedImportNode(context, moduleNode, moduleRequest, importName, writeLocalNode);
    }

    @Override
    public Object execute(VirtualFrame frame) {
        JSModuleRecord referencingScriptOrModule = (JSModuleRecord) moduleNode.execute(frame);
        Evaluator evaluator = context.getEvaluator();
        JSModuleRecord importedModule = evaluator.hostResolveImportedModule(context, referencingScriptOrModule, moduleRequest);
        // Let resolution be importedModule.ResolveExport(in.[[ImportName]], << >>, << >>).
        ExportResolution resolution = resolutionProfile.profile(evaluator.resolveExport(importedModule, importName));
        // If resolution is null or resolution is "ambiguous", throw SyntaxError.
        if (resolution.isNull() || resolution.isAmbiguous()) {
            String message = "The requested module '%s' does not provide an export named '%s'";
            throw Errors.createSyntaxErrorFormat(message, this, moduleRequest, importName);
        }
        Object resolutionOrNamespace;
        if (resolution.isNamespace()) {
            resolutionOrNamespace = evaluator.getModuleNamespace(resolution.getModule());
        } else {
            resolutionOrNamespace = resolution;
        }
        writeLocalNode.executeWrite(frame, resolutionOrNamespace);
        return EMPTY;
    }

    @Override
    protected JavaScriptNode copyUninitialized(Set<Class<? extends Tag>> materializedTags) {
        return create(context, cloneUninitialized(moduleNode, materializedTags), moduleRequest, importName, cloneUninitialized(writeLocalNode, materializedTags));
    }

}