Examples with Expression org.eclipse.n4js.n4JS.Expression used on opensource projects

Example 76 with Expression

use of org.eclipse.n4js.n4JS.Expression in project n4js by eclipse.

the class GuardFactory method createGuardForTypeof.

private static Guard createGuardForTypeof(EObject topContainer, UnaryExpression ue, boolean negateTree, boolean negateEqe, Expression rhs) {
    if (rhs instanceof StringLiteral) {
        StringLiteral rhsStringLit = (StringLiteral) rhs;
        String lit = rhsStringLit.getValue();
        if (!"undefined".equals(lit)) {
            return null;
        }
    }
    Expression typeofExpr = ue.getExpression();
    if (SymbolFactory.canCreate(typeofExpr)) {
        GuardAssertion asserts = FlowAssertionFactory.getGuard(topContainer, ue.eContainer(), negateTree, negateEqe);
        Guard guard = createIsUndefinedGuard(ue, asserts, typeofExpr);
        return guard;
    }
    return null;
}

Example 77 with Expression

use of org.eclipse.n4js.n4JS.Expression in project n4js by eclipse.

the class GuardStructureFactory method getCondition.

/**
 * @return the top {@link Expression} of a {@link GuardStructure}, or null.
 */
private static Expression getCondition(ControlFlowEdge edge) {
    Expression condition = null;
    Node previousNode = edge.start;
    ControlFlowElement previousCFE = previousNode.getControlFlowElement();
    if (previousCFE instanceof ConditionalExpression) {
        ConditionalExpression ce = (ConditionalExpression) previousCFE;
        condition = ce.getExpression();
    } else if (previousCFE instanceof BinaryLogicalExpression) {
        BinaryLogicalExpression ble = (BinaryLogicalExpression) previousCFE;
        condition = ble.getLhs();
    } else if (previousCFE instanceof IfStatement) {
        IfStatement is = (IfStatement) previousCFE;
        condition = is.getExpression();
    } else if (previousCFE instanceof WhileStatement) {
        WhileStatement ws = (WhileStatement) previousCFE;
        condition = ws.getExpression();
    } else if (previousCFE instanceof DoStatement) {
        DoStatement ws = (DoStatement) previousCFE;
        condition = ws.getExpression();
    } else if (previousCFE instanceof ForStatement) {
        ForStatement ws = (ForStatement) previousCFE;
        condition = ws.getExpression();
    }
    return condition;
}

Example 78 with Expression

use of org.eclipse.n4js.n4JS.Expression in project n4js by eclipse.

the class NullDereferenceAnalyser method isDereferencing.

private boolean isDereferencing(ControlFlowElement cfe) {
    EObject parent = cfe.eContainer();
    if (parent instanceof ParameterizedPropertyAccessExpression) {
        ParameterizedPropertyAccessExpression ppae = (ParameterizedPropertyAccessExpression) parent;
        Expression target = ppae.getTarget();
        return cfe == target;
    }
    return false;
}

Example 79 with Expression

use of org.eclipse.n4js.n4JS.Expression in project n4js by eclipse.

the class GuardStructure method getGuardList.

private List<Guard> getGuardList() {
    LinkedList<Guard> gList = new LinkedList<>();
    List<Expression> allExpressions = EcoreUtil2.getAllContentsOfType(condition, Expression.class);
    allExpressions.add(condition);
    EObject conditionContainer = condition.eContainer();
    for (Expression expr : allExpressions) {
        Guard guard = GuardFactory.create(conditionContainer, expr, negate);
        if (guard != null) {
            gList.add(guard);
        }
    }
    return gList;
}

Example 80 with Expression

use of org.eclipse.n4js.n4JS.Expression in project n4js by eclipse.

the class PostfixExpressionImpl method basicSetExpression.

/**
 * <!-- begin-user-doc -->
 * <!-- end-user-doc -->
 * @generated
 */
public NotificationChain basicSetExpression(Expression newExpression, NotificationChain msgs) {
    Expression oldExpression = expression;
    expression = newExpression;
    if (eNotificationRequired()) {
        ENotificationImpl notification = new ENotificationImpl(this, Notification.SET, N4JSPackage.POSTFIX_EXPRESSION__EXPRESSION, oldExpression, newExpression);
        if (msgs == null)
            msgs = notification;
        else
            msgs.add(notification);
    }
    return msgs;
}