Examples with Ref com.google.javascript.jscomp.GlobalNamespace.Ref used on opensource projects

Example 11 with Ref

use of com.google.javascript.jscomp.GlobalNamespace.Ref in project closure-compiler by google.

the class GlobalNamespaceTest method confirmTwinsAreCreated.

@Test
public void confirmTwinsAreCreated() {
    GlobalNamespace namespace = parse(lines(// 
    "let A;", // A will have twin refs here
    "const B = A = 3;"));
    Name nameA = namespace.getOwnSlot("A");
    // first ref is declaration of A
    // second is the SET twin
    Ref setTwinRef = Iterables.get(nameA.getRefs(), 1);
    // third is the GET twin
    Ref getTwinRef = Iterables.get(nameA.getRefs(), 2);
    // confirm that they start as twins
    assertThat(setTwinRef.getTwin()).isEqualTo(getTwinRef);
    assertThat(getTwinRef.getTwin()).isEqualTo(setTwinRef);
    Node oldNode = getTwinRef.getNode();
    assertThat(setTwinRef.getNode()).isEqualTo(oldNode);
    // confirm that they are both associated with oldNode
    assertThat(nameA.getRefsForNode(oldNode)).containsExactly(setTwinRef, getTwinRef);
}

Example 12 with Ref

use of com.google.javascript.jscomp.GlobalNamespace.Ref in project closure-compiler by google.

the class GlobalNamespaceTest method updateRefNodeMovesRefFromOldNodeToNewNode.

@Test
public void updateRefNodeMovesRefFromOldNodeToNewNode() {
    GlobalNamespace namespace = parse("const A = 3;");
    Name nameA = namespace.getOwnSlot("A");
    Ref refA = nameA.getFirstRef();
    Node oldNode = refA.getNode();
    Node newNode = IR.name("A");
    assertThat(nameA.getRefsForNode(oldNode)).containsExactly(refA);
    nameA.updateRefNode(refA, newNode);
    assertThat(refA.getNode()).isEqualTo(newNode);
    assertThat(nameA.getRefsForNode(oldNode)).isEmpty();
    assertThat(nameA.getRefsForNode(newNode)).containsExactly(refA);
}

Example 13 with Ref

use of com.google.javascript.jscomp.GlobalNamespace.Ref in project closure-compiler by google.

the class GlobalNamespaceTest method updateRefNodeCanSetNodeToNullButPreventsFurtherUpdates.

@Test
public void updateRefNodeCanSetNodeToNullButPreventsFurtherUpdates() {
    GlobalNamespace namespace = parse("const A = 3;");
    Name nameA = namespace.getOwnSlot("A");
    Ref refA = nameA.getFirstRef();
    Node oldNode = refA.getNode();
    assertThat(nameA.getRefsForNode(oldNode)).containsExactly(refA);
    nameA.updateRefNode(refA, null);
    assertThat(refA.getNode()).isNull();
    assertThat(nameA.getRefsForNode(oldNode)).isEmpty();
    // cannot get refs for null
    assertThrows(NullPointerException.class, () -> nameA.getRefsForNode(null));
    // cannot update the node again once it's been set to null
    assertThrows(IllegalArgumentException.class, () -> nameA.updateRefNode(refA, null));
    assertThrows(IllegalStateException.class, () -> nameA.updateRefNode(refA, oldNode));
}

Example 14 with Ref

use of com.google.javascript.jscomp.GlobalNamespace.Ref in project closure-compiler by google.

the class GlobalNamespaceTest method updateRefNodeRejectsNodeWithExistingRefs.

@Test
public void updateRefNodeRejectsNodeWithExistingRefs() {
    GlobalNamespace namespace = parse(lines(// declaration ref
    "const A = 3;", // use ref
    "A;"));
    Name nameA = namespace.getOwnSlot("A");
    Ref declarationRef = nameA.getDeclaration();
    // use ref is 2nd
    Ref useRef = Iterables.get(nameA.getRefs(), 1);
    Node useNode = useRef.getNode();
    assertThrows(IllegalArgumentException.class, () -> nameA.updateRefNode(declarationRef, useNode));
}

Example 15 with Ref

use of com.google.javascript.jscomp.GlobalNamespace.Ref in project closure-compiler by google.

the class PolymerBehaviorExtractor method extractBehaviors.

/**
 * Extracts all Behaviors from an array literal, recursively. Entries in the array can be
 * object literals or array literals (of other behaviors). Behavior names must be
 * global, fully qualified names.
 * @see https://github.com/Polymer/polymer/blob/0.8-preview/PRIMER.md#behaviors
 * @return A list of all {@code BehaviorDefinitions} in the array.
 */
ImmutableList<BehaviorDefinition> extractBehaviors(Node behaviorArray) {
    if (behaviorArray == null) {
        return ImmutableList.of();
    }
    if (!behaviorArray.isArrayLit()) {
        compiler.report(JSError.make(behaviorArray, PolymerPassErrors.POLYMER_INVALID_BEHAVIOR_ARRAY));
        return ImmutableList.of();
    }
    ImmutableList.Builder<BehaviorDefinition> behaviors = ImmutableList.builder();
    for (Node behaviorName : behaviorArray.children()) {
        if (behaviorName.isObjectLit()) {
            PolymerPassStaticUtils.switchDollarSignPropsToBrackets(behaviorName, compiler);
            PolymerPassStaticUtils.quoteListenerAndHostAttributeKeys(behaviorName, compiler);
            if (NodeUtil.getFirstPropMatchingKey(behaviorName, "is") != null) {
                compiler.report(JSError.make(behaviorName, PolymerPassErrors.POLYMER_INVALID_BEHAVIOR));
            }
            behaviors.add(new BehaviorDefinition(PolymerPassStaticUtils.extractProperties(behaviorName, PolymerClassDefinition.DefinitionType.ObjectLiteral, compiler), getBehaviorFunctionsToCopy(behaviorName), getNonPropertyMembersToCopy(behaviorName), !NodeUtil.isInFunction(behaviorName), (FeatureSet) NodeUtil.getEnclosingScript(behaviorName).getProp(Node.FEATURE_SET)));
            continue;
        }
        Name behaviorGlobalName = globalNames.getSlot(behaviorName.getQualifiedName());
        boolean isGlobalDeclaration = true;
        if (behaviorGlobalName == null) {
            compiler.report(JSError.make(behaviorName, PolymerPassErrors.POLYMER_UNQUALIFIED_BEHAVIOR));
            continue;
        }
        Ref behaviorDeclaration = behaviorGlobalName.getDeclaration();
        // Use any set as a backup declaration, even if it's local.
        if (behaviorDeclaration == null) {
            List<Ref> behaviorRefs = behaviorGlobalName.getRefs();
            for (Ref ref : behaviorRefs) {
                if (ref.isSet()) {
                    isGlobalDeclaration = false;
                    behaviorDeclaration = ref;
                    break;
                }
            }
        }
        if (behaviorDeclaration == null) {
            compiler.report(JSError.make(behaviorName, PolymerPassErrors.POLYMER_UNQUALIFIED_BEHAVIOR));
            continue;
        }
        Node behaviorDeclarationNode = behaviorDeclaration.getNode();
        JSDocInfo behaviorInfo = NodeUtil.getBestJSDocInfo(behaviorDeclarationNode);
        if (behaviorInfo == null || !behaviorInfo.isPolymerBehavior()) {
            compiler.report(JSError.make(behaviorDeclarationNode, PolymerPassErrors.POLYMER_UNANNOTATED_BEHAVIOR));
        }
        Node behaviorValue = NodeUtil.getRValueOfLValue(behaviorDeclarationNode);
        if (behaviorValue == null) {
            compiler.report(JSError.make(behaviorName, PolymerPassErrors.POLYMER_UNQUALIFIED_BEHAVIOR));
        } else if (behaviorValue.isArrayLit()) {
            // Individual behaviors can also be arrays of behaviors. Parse them recursively.
            behaviors.addAll(extractBehaviors(behaviorValue));
        } else if (behaviorValue.isObjectLit()) {
            PolymerPassStaticUtils.switchDollarSignPropsToBrackets(behaviorValue, compiler);
            PolymerPassStaticUtils.quoteListenerAndHostAttributeKeys(behaviorValue, compiler);
            if (NodeUtil.getFirstPropMatchingKey(behaviorValue, "is") != null) {
                compiler.report(JSError.make(behaviorValue, PolymerPassErrors.POLYMER_INVALID_BEHAVIOR));
            }
            behaviors.add(new BehaviorDefinition(PolymerPassStaticUtils.extractProperties(behaviorValue, PolymerClassDefinition.DefinitionType.ObjectLiteral, compiler), getBehaviorFunctionsToCopy(behaviorValue), getNonPropertyMembersToCopy(behaviorValue), isGlobalDeclaration, (FeatureSet) NodeUtil.getEnclosingScript(behaviorValue).getProp(Node.FEATURE_SET)));
        } else {
            compiler.report(JSError.make(behaviorName, PolymerPassErrors.POLYMER_UNQUALIFIED_BEHAVIOR));
        }
    }
    return behaviors.build();
}