Examples with BooleanLiteral com.google.devtools.j2objc.ast.BooleanLiteral used on opensource projects

Example 1 with BooleanLiteral

use of com.google.devtools.j2objc.ast.BooleanLiteral in project j2objc by google.

the class UnsequencedExpressionRewriter method visit.

@Override
public boolean visit(DoStatement node) {
    node.getBody().accept(this);
    newExpression(node.getExpression());
    node.getExpression().accept(this);
    List<VariableAccess> toExtract = getUnsequencedAccesses();
    if (!toExtract.isEmpty()) {
        // Convert "while (cond)" into "while (true) { if (!(cond)) break; ... }".
        List<Statement> stmtList = TreeUtil.asStatementList(node.getBody());
        extractOrderedAccesses(stmtList, currentTopNode, toExtract);
        stmtList.add(createLoopTermination(node.getExpression()));
        node.setExpression(new BooleanLiteral(true, typeUtil));
    }
    return false;
}

Example 2 with BooleanLiteral

use of com.google.devtools.j2objc.ast.BooleanLiteral in project j2objc by google.

the class UnsequencedExpressionRewriter method visit.

@Override
public boolean visit(WhileStatement node) {
    node.getBody().accept(this);
    newExpression(node.getExpression());
    node.getExpression().accept(this);
    List<VariableAccess> toExtract = getUnsequencedAccesses();
    if (!toExtract.isEmpty()) {
        // Convert "while (cond)" into "while (true) { if (!(cond)) break; ... }".
        List<Statement> stmtList = TreeUtil.asStatementList(node.getBody()).subList(0, 0);
        extractOrderedAccesses(stmtList, currentTopNode, toExtract);
        stmtList.add(createLoopTermination(node.getExpression()));
        node.setExpression(new BooleanLiteral(true, typeUtil));
    }
    return false;
}

Example 3 with BooleanLiteral

use of com.google.devtools.j2objc.ast.BooleanLiteral in project j2objc by google.

the class ConstantBranchPruner method endVisit.

@Override
public void endVisit(InfixExpression node) {
    InfixExpression.Operator operator = node.getOperator();
    if (operator != CONDITIONAL_AND && operator != CONDITIONAL_OR) {
        return;
    }
    List<Expression> operands = node.getOperands();
    int lastSideEffect = -1;
    for (int i = 0; i < operands.size(); i++) {
        Expression expr = operands.get(i);
        if (TranslationUtil.hasSideEffect(expr)) {
            lastSideEffect = i;
        }
        Boolean knownVal = getKnownValue(expr);
        if (knownVal == null) {
            continue;
        }
        if (knownVal == (operator == CONDITIONAL_OR)) {
            // Whole expression evaluates to 'knownVal'.
            operands.subList(lastSideEffect + 1, operands.size()).clear();
            if (lastSideEffect < i) {
                operands.add(new BooleanLiteral(knownVal, typeUtil));
            }
            break;
        } else if (lastSideEffect < i) {
            // Else remove unnecessary constant value.
            operands.remove(i--);
        }
    }
    if (operands.size() == 0) {
        if (operator == CONDITIONAL_OR) {
            // All constants must have been false, because a true value would have
            // caused us to return in the loop above.
            node.replaceWith(new BooleanLiteral(false, typeUtil));
        } else {
            // Likewise, all constants must have been true.
            node.replaceWith(new BooleanLiteral(true, typeUtil));
        }
    } else if (operands.size() == 1) {
        node.replaceWith(operands.remove(0));
    }
}

Example 4 with BooleanLiteral

use of com.google.devtools.j2objc.ast.BooleanLiteral in project j2objc by google.

the class GwtConverter method visit.

@Override
public boolean visit(MethodInvocation node) {
    ExecutableElement method = node.getExecutableElement();
    List<Expression> args = node.getArguments();
    if (ElementUtil.getName(method).equals("create") && ElementUtil.getQualifiedName(ElementUtil.getDeclaringClass(method)).equals(GWT_CLASS) && args.size() == 1) {
        // Convert GWT.create(Foo.class) to Foo.class.newInstance().
        ExecutableElement newMethod = ElementUtil.findMethod(typeUtil.getJavaClass(), "newInstance");
        Expression clazz = args.remove(0);
        node.setExpression(clazz);
        node.setExecutablePair(new ExecutablePair(newMethod));
    } else if (isGwtTest(node)) {
        node.replaceWith(new BooleanLiteral(false, typeUtil));
    }
    return true;
}