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

Example 1 with PrefixExpression

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

the class EnhancedForRewriter method handleArrayIteration.

private void handleArrayIteration(EnhancedForStatement node) {
    Expression expression = node.getExpression();
    ArrayType expressionType = (ArrayType) expression.getTypeMirror();
    VariableElement loopVariable = node.getParameter().getVariableElement();
    TypeMirror componentType = expressionType.getComponentType();
    TypeElement iosArrayType = typeUtil.getIosArray(componentType);
    TypeMirror bufferType = new PointerType(componentType);
    VariableElement arrayVariable = GeneratedVariableElement.newLocalVar("a__", expressionType, null);
    VariableElement bufferVariable = GeneratedVariableElement.newLocalVar("b__", bufferType, null).setTypeQualifiers("const*");
    VariableElement endVariable = GeneratedVariableElement.newLocalVar("e__", bufferType, null).setTypeQualifiers("const*");
    VariableElement bufferField = GeneratedVariableElement.newField("buffer", bufferType, iosArrayType).addModifiers(Modifier.PUBLIC);
    VariableElement sizeField = GeneratedVariableElement.newField("size", typeUtil.getInt(), iosArrayType).addModifiers(Modifier.PUBLIC);
    VariableDeclarationStatement arrayDecl = new VariableDeclarationStatement(arrayVariable, TreeUtil.remove(expression));
    FieldAccess bufferAccess = new FieldAccess(bufferField, new SimpleName(arrayVariable));
    VariableDeclarationStatement bufferDecl = new VariableDeclarationStatement(bufferVariable, bufferAccess);
    InfixExpression endInit = new InfixExpression(bufferType, InfixExpression.Operator.PLUS, new SimpleName(bufferVariable), new FieldAccess(sizeField, new SimpleName(arrayVariable)));
    VariableDeclarationStatement endDecl = new VariableDeclarationStatement(endVariable, endInit);
    WhileStatement loop = new WhileStatement();
    loop.setExpression(new InfixExpression(typeUtil.getBoolean(), InfixExpression.Operator.LESS, new SimpleName(bufferVariable), new SimpleName(endVariable)));
    Block newLoopBody = makeBlock(TreeUtil.remove(node.getBody()));
    loop.setBody(newLoopBody);
    newLoopBody.addStatement(0, new VariableDeclarationStatement(loopVariable, new PrefixExpression(componentType, PrefixExpression.Operator.DEREFERENCE, new PostfixExpression(bufferVariable, PostfixExpression.Operator.INCREMENT))));
    Block block = new Block();
    List<Statement> stmts = block.getStatements();
    stmts.add(arrayDecl);
    stmts.add(bufferDecl);
    stmts.add(endDecl);
    stmts.add(loop);
    replaceLoop(node, block, loop);
}

Example 2 with PrefixExpression

use of com.google.devtools.j2objc.ast.PrefixExpression 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 3 with PrefixExpression

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

the class OperatorRewriter method rewriteRegularAssignment.

private void rewriteRegularAssignment(Assignment node) {
    VariableElement var = TreeUtil.getVariableElement(node.getLeftHandSide());
    if (var == null) {
        return;
    }
    handleRetainedLocal(var, node.getRightHandSide());
    boolean isRetainedWith = ElementUtil.isRetainedWithField(var);
    String funcName = getAssignmentFunctionName(node, var, isRetainedWith);
    if (funcName == null) {
        return;
    }
    TypeMirror type = node.getTypeMirror();
    TypeMirror idType = TypeUtil.ID_TYPE;
    TypeMirror declaredType = type.getKind().isPrimitive() ? type : idType;
    Expression lhs = node.getLeftHandSide();
    FunctionElement element = new FunctionElement(funcName, declaredType, null);
    FunctionInvocation invocation = new FunctionInvocation(element, type);
    List<Expression> args = invocation.getArguments();
    if (isRetainedWith) {
        element.addParameters(idType);
        args.add(getRetainedWithTarget(node, var));
    }
    element.addParameters(TypeUtil.ID_PTR_TYPE, idType);
    args.add(new PrefixExpression(new PointerType(lhs.getTypeMirror()), PrefixExpression.Operator.ADDRESS_OF, TreeUtil.remove(lhs)));
    args.add(TreeUtil.remove(node.getRightHandSide()));
    node.replaceWith(invocation);
}

Example 4 with PrefixExpression

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

the class OperatorRewriter method rewriteStringAppend.

private void rewriteStringAppend(Assignment node) {
    List<Expression> operands = getStringAppendOperands(node);
    Expression lhs = node.getLeftHandSide();
    TypeMirror lhsType = lhs.getTypeMirror();
    String funcName = "JreStrAppend" + translationUtil.getOperatorFunctionModifier(lhs);
    FunctionElement element = new FunctionElement(funcName, TypeUtil.ID_TYPE, null).addParameters(TypeUtil.ID_PTR_TYPE, TypeUtil.NATIVE_CHAR_PTR).setIsVarargs(true);
    FunctionInvocation invocation = new FunctionInvocation(element, lhsType);
    List<Expression> args = invocation.getArguments();
    args.add(new PrefixExpression(new PointerType(lhsType), PrefixExpression.Operator.ADDRESS_OF, TreeUtil.remove(lhs)));
    args.add(getStrcatTypesCString(operands));
    args.addAll(operands);
    node.replaceWith(invocation);
}

Example 5 with PrefixExpression

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

the class UnsequencedExpressionRewriter method createLoopTermination.

private IfStatement createLoopTermination(Expression loopCondition) {
    IfStatement newIf = new IfStatement();
    newIf.setExpression(new PrefixExpression(typeUtil.getBoolean(), PrefixExpression.Operator.NOT, ParenthesizedExpression.parenthesize(loopCondition.copy())));
    newIf.setThenStatement(new BreakStatement());
    return newIf;
}