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

Example 6 with ExpressionStatement

use of com.google.devtools.j2objc.ast.ExpressionStatement 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 7 with ExpressionStatement

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

the class UnsequencedExpressionRewriter method extractExpressionList.

private void extractExpressionList(List<Expression> expressions, List<Statement> stmtList, boolean extractModifiedExpression) {
    for (int i = 0; i < expressions.size(); i++) {
        Expression expr = expressions.get(i);
        newExpression(expr);
        expr.accept(this);
        List<VariableAccess> unsequencedAccesses = getUnsequencedAccesses();
        if (!unsequencedAccesses.isEmpty()) {
            for (int j = 0; j < i; j++) {
                stmtList.add(new ExpressionStatement(expressions.get(j).copy()));
            }
            expressions.subList(0, i).clear();
            extractOrderedAccesses(stmtList, currentTopNode, unsequencedAccesses);
            i = 0;
            if (extractModifiedExpression) {
                stmtList.add(new ExpressionStatement(expressions.get(0).copy()));
                expressions.remove(0);
                i = -1;
            }
        }
    }
}

Example 8 with ExpressionStatement

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

the class JavaCloneWriter method createReleaseStatement.

private Statement createReleaseStatement(VariableElement var) {
    if (options.useARC()) {
        TypeMirror voidType = typeUtil.getVoid();
        FunctionElement element = new FunctionElement("JreRelease", voidType, null).addParameters(TypeUtil.ID_TYPE);
        FunctionInvocation invocation = new FunctionInvocation(element, voidType);
        invocation.addArgument(new SimpleName(var));
        return new ExpressionStatement(invocation);
    } else {
        return new ExpressionStatement(new MethodInvocation(new ExecutablePair(releaseMethod), new SimpleName(var)));
    }
}

Example 9 with ExpressionStatement

use of com.google.devtools.j2objc.ast.ExpressionStatement 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 10 with ExpressionStatement

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

the class CastResolver method endVisit.

/**
   * Adds a cast check to compareTo methods. This helps Comparable types behave
   * well in sorted collections which rely on Java's runtime type checking.
   */
@Override
public void endVisit(MethodDeclaration node) {
    ExecutableElement element = node.getExecutableElement();
    if (!ElementUtil.getName(element).equals("compareTo") || node.getBody() == null) {
        return;
    }
    DeclaredType comparableType = typeUtil.findSupertype(ElementUtil.getDeclaringClass(element).asType(), "java.lang.Comparable");
    if (comparableType == null) {
        return;
    }
    List<? extends TypeMirror> typeArguments = comparableType.getTypeArguments();
    List<? extends VariableElement> parameters = element.getParameters();
    if (typeArguments.size() != 1 || parameters.size() != 1 || !typeArguments.get(0).equals(parameters.get(0).asType())) {
        return;
    }
    VariableElement param = node.getParameter(0).getVariableElement();
    FunctionInvocation castCheck = createCastCheck(typeArguments.get(0), new SimpleName(param));
    if (castCheck != null) {
        node.getBody().addStatement(0, new ExpressionStatement(castCheck));
    }
}