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

Example 11 with Block

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

the class UnsequencedExpressionRewriter method extractInfixConditional.

private void extractInfixConditional(List<Statement> stmtList, InfixExpression conditional, List<VariableAccess> toExtract) {
    InfixExpression.Operator op = conditional.getOperator();
    List<Expression> branches = conditional.getOperands();
    int lastIfExtractIdx = 0;
    VariableElement conditionalVar = null;
    int lastExtracted = 0;
    Expression lastBranch = null;
    for (int i = 0; i < toExtract.size(); i++) {
        VariableAccess access = toExtract.get(i);
        TreeNode node = access.expression;
        while (node.getParent() != conditional) {
            node = node.getParent();
        }
        assert node instanceof Expression;
        Expression branch = (Expression) node;
        // Extract all accesses from the previous branch.
        if (lastBranch != null && branch != lastBranch) {
            extractOrderedAccesses(stmtList, lastBranch, toExtract.subList(lastExtracted, i));
            lastExtracted = i;
        }
        lastBranch = branch;
        // If there's a new access in a new branch, then we extract an if-statement.
        if (branch != branches.get(lastIfExtractIdx)) {
            TypeMirror boolType = typeUtil.getBoolean();
            if (conditionalVar == null) {
                conditionalVar = GeneratedVariableElement.newLocalVar("unseq$" + count++, boolType, currentMethod);
                conditional.replaceWith(new SimpleName(conditionalVar));
                stmtList.add(new VariableDeclarationStatement(conditionalVar, null));
            }
            List<Expression> subBranches = branches.subList(lastIfExtractIdx, branches.indexOf(branch));
            IfStatement newIf = new IfStatement();
            Expression ifExpr = new Assignment(new SimpleName(conditionalVar), conditionalFromSubBranches(subBranches, op));
            if (op == InfixExpression.Operator.CONDITIONAL_OR) {
                ifExpr = new PrefixExpression(boolType, PrefixExpression.Operator.NOT, ParenthesizedExpression.parenthesize(ifExpr));
            }
            newIf.setExpression(ifExpr);
            stmtList.add(newIf);
            Block thenBlock = new Block();
            stmtList = thenBlock.getStatements();
            newIf.setThenStatement(thenBlock);
            lastIfExtractIdx = branches.indexOf(branch);
        }
    }
    extractOrderedAccesses(stmtList, lastBranch, toExtract.subList(lastExtracted, toExtract.size()));
    if (conditionalVar != null) {
        List<Expression> remainingBranches = Lists.newArrayList();
        remainingBranches.add(new SimpleName(conditionalVar));
        remainingBranches.addAll(branches.subList(lastIfExtractIdx, branches.size()));
        stmtList.add(new ExpressionStatement(new Assignment(new SimpleName(conditionalVar), conditionalFromSubBranches(remainingBranches, op))));
    }
}

Example 12 with Block

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

the class OcniExtractor method endVisit.

@Override
public void endVisit(MethodDeclaration node) {
    int modifiers = node.getModifiers();
    if (Modifier.isNative(modifiers)) {
        NativeStatement nativeStmt = extractNativeStatement(node);
        if (nativeStmt != null) {
            Block body = new Block();
            body.addStatement(nativeStmt);
            node.setBody(body);
            node.removeModifiers(Modifier.NATIVE);
        }
    }
    if (Modifier.isSynchronized(modifiers)) {
        TypeElement declaringClass = ElementUtil.getDeclaringClass(node.getExecutableElement());
        SynchronizedStatement syncStmt = new SynchronizedStatement(Modifier.isStatic(modifiers) ? new TypeLiteral(declaringClass.asType(), typeUtil) : new ThisExpression(declaringClass.asType()));
        syncStmt.setBody(TreeUtil.remove(node.getBody()));
        Block newBody = new Block();
        newBody.addStatement(syncStmt);
        node.setBody(newBody);
        node.removeModifiers(Modifier.SYNCHRONIZED);
    }
}

Example 13 with Block

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

the class GwtConverter method visit.

@Override
public boolean visit(IfStatement node) {
    if (isGwtTest(node.getExpression())) {
        if (node.getElseStatement() != null) {
            // Replace this node with the else statement.
            Statement replacement = TreeUtil.remove(node.getElseStatement());
            node.replaceWith(replacement);
            replacement.accept(this);
        } else {
            // with an empty statement.
            if (node.getParent() instanceof Block) {
                node.remove();
            } else {
                node.replaceWith(new EmptyStatement());
            }
        }
        return false;
    }
    return true;
}

Example 14 with Block

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

the class JavaCloneWriter method endVisit.

@Override
public void endVisit(TypeDeclaration node) {
    TypeElement type = node.getTypeElement();
    VariableElement originalVar = GeneratedVariableElement.newParameter("original", type.asType(), null);
    List<Statement> adjustments = getFieldAdjustments(node, originalVar);
    if (adjustments.isEmpty()) {
        return;
    }
    TypeMirror voidType = typeUtil.getVoid();
    ExecutableElement javaCloneElement = GeneratedExecutableElement.newMethodWithSelector(JAVA_CLONE_METHOD, voidType, type).addParameter(originalVar);
    MethodDeclaration declaration = new MethodDeclaration(javaCloneElement);
    declaration.setHasDeclaration(false);
    node.addBodyDeclaration(declaration);
    declaration.addParameter(new SingleVariableDeclaration(originalVar));
    Block body = new Block();
    declaration.setBody(body);
    List<Statement> statements = body.getStatements();
    ExecutableElement javaCloneSuperElement = GeneratedExecutableElement.newMethodWithSelector(JAVA_CLONE_METHOD, voidType, typeUtil.getJavaObject());
    SuperMethodInvocation superCall = new SuperMethodInvocation(new ExecutablePair(javaCloneSuperElement));
    superCall.addArgument(new SimpleName(originalVar));
    statements.add(new ExpressionStatement(superCall));
    statements.addAll(adjustments);
}

Example 15 with Block

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

the class JavaToIOSMethodTranslator method addCopyWithZoneMethod.

private void addCopyWithZoneMethod(TypeDeclaration node) {
    // Create copyWithZone: method.
    GeneratedExecutableElement copyElement = GeneratedExecutableElement.newMethodWithSelector("copyWithZone:", TypeUtil.ID_TYPE, node.getTypeElement());
    MethodDeclaration copyDecl = new MethodDeclaration(copyElement);
    copyDecl.setHasDeclaration(false);
    // Add NSZone *zone parameter.
    VariableElement zoneParam = GeneratedVariableElement.newParameter("zone", NSZONE_TYPE, copyElement);
    copyElement.addParameter(zoneParam);
    copyDecl.addParameter(new SingleVariableDeclaration(zoneParam));
    Block block = new Block();
    copyDecl.setBody(block);
    ExecutableElement cloneElement = ElementUtil.findMethod(typeUtil.getJavaObject(), "clone");
    MethodInvocation invocation = new MethodInvocation(new ExecutablePair(cloneElement), null);
    if (options.useReferenceCounting()) {
        invocation = new MethodInvocation(new ExecutablePair(RETAIN_METHOD), invocation);
    }
    block.addStatement(new ReturnStatement(invocation));
    node.addBodyDeclaration(copyDecl);
}