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

Example 11 with InfixExpression

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

the class TreeConverter method convertBinary.

private TreeNode convertBinary(JCTree.JCBinary node) {
    InfixExpression newNode = new InfixExpression();
    newNode.setTypeMirror(node.type).setOperator(InfixExpression.Operator.parse(node.operator.name.toString()));
    // Flatten this tree to avoid stack overflow with very deep trees. This
    // code traverses the subtree non-recursively and merges all children
    // that have the same operator into this node.
    List<StackState> stack = Lists.newArrayList();
    stack.add(new StackState(node));
    while (!stack.isEmpty()) {
        StackState currentState = stack.get(stack.size() - 1);
        JCTree.JCExpression child = currentState.nextChild();
        if (child == null) {
            stack.remove(stack.size() - 1);
            continue;
        }
        if (child instanceof JCTree.JCBinary) {
            JCTree.JCBinary infixChild = (JCTree.JCBinary) child;
            if (infixChild.getKind() == node.getKind()) {
                stack.add(new StackState(infixChild));
                continue;
            }
        }
        newNode.addOperand((Expression) convert(child));
    }
    return newNode;
}

Example 12 with InfixExpression

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

the class OuterReferenceResolverTest method testCapturedLocalVariable.

public void testCapturedLocalVariable() {
    resolveSource("Test", "class Test { void test(final int i) { Runnable r = new Runnable() { " + "public void run() { int i2 = i + 1; } }; } }");
    TypeDeclaration runnableNode = (TypeDeclaration) nodesByType.get(Kind.TYPE_DECLARATION).get(1);
    assertTrue(ElementUtil.isAnonymous(runnableNode.getTypeElement()));
    assertFalse(captureInfo.needsOuterReference(runnableNode.getTypeElement()));
    List<VariableElement> innerFields = Lists.newArrayList(captureInfo.getCaptureFields(runnableNode.getTypeElement()));
    assertEquals(1, innerFields.size());
    assertEquals("val$i", ElementUtil.getName(innerFields.get(0)));
    ClassInstanceCreation creationNode = (ClassInstanceCreation) nodesByType.get(Kind.CLASS_INSTANCE_CREATION).get(0);
    List<Expression> captureArgs = creationNode.getCaptureArgs();
    assertEquals(1, captureArgs.size());
    Expression captureArg = captureArgs.get(0);
    assertTrue(captureArg instanceof SimpleName);
    VariableElement captureVar = TreeUtil.getVariableElement(captureArg);
    assertNotNull(captureVar);
    assertEquals("i", ElementUtil.getName(captureVar));
    InfixExpression addition = (InfixExpression) nodesByType.get(Kind.INFIX_EXPRESSION).get(0);
    Expression iNode = addition.getOperands().get(0);
    assertTrue(iNode instanceof SimpleName);
    VariableElement iVar = TreeUtil.getVariableElement(iNode);
    assertNotNull(iVar);
    assertEquals("val$i", ElementUtil.getName(iVar));
}

Example 13 with InfixExpression

use of com.google.devtools.j2objc.ast.InfixExpression 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 14 with InfixExpression

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

the class NilCheckResolver method handleConditionalOperator.

private boolean handleConditionalOperator(InfixExpression node, boolean logicalAnd) {
    Set<VariableElement> newSafeVars = new HashSet<>();
    int pushCount = 0;
    for (Iterator<Expression> it = node.getOperands().iterator(); it.hasNext(); ) {
        Expression operand = it.next();
        operand.accept(this);
        Set<VariableElement> safeVarsForBranch = logicalAnd ? getSafeVarsTrue(operand) : getSafeVarsFalse(operand);
        Set<VariableElement> safeVarsForMerge = logicalAnd ? getSafeVarsFalse(operand) : getSafeVarsTrue(operand);
        newSafeVars.addAll(safeVarsForBranch);
        if (it.hasNext()) {
            pushScope();
            addSafeVars(safeVarsForBranch);
            scope.next.mergeVars(safeVarsForMerge);
            pushCount++;
        }
    }
    while (pushCount-- > 0) {
        popAndMerge();
    }
    setConditionalSafeVars(node, logicalAnd ? newSafeVars : EMPTY_VARS, logicalAnd ? EMPTY_VARS : newSafeVars);
    return false;
}

Example 15 with InfixExpression

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

the class EnumRewriter method addSimpleNonArcInitialization.

private void addSimpleNonArcInitialization(EnumDeclaration node) {
    List<EnumConstantDeclaration> constants = node.getEnumConstants();
    List<Statement> stmts = node.getClassInitStatements().subList(0, 0);
    stmts.add(new NativeStatement("size_t objSize = class_getInstanceSize(self);"));
    stmts.add(new NativeStatement(UnicodeUtils.format("size_t allocSize = %s * objSize;", constants.size())));
    stmts.add(new NativeStatement("uintptr_t ptr = (uintptr_t)calloc(allocSize, 1);"));
    VariableElement localEnum = GeneratedVariableElement.newLocalVar("e", TypeUtil.ID_TYPE, null);
    stmts.add(new VariableDeclarationStatement(localEnum, null));
    StringBuffer sb = new StringBuffer("id names[] = {\n  ");
    for (EnumConstantDeclaration constant : node.getEnumConstants()) {
        sb.append("@\"" + ElementUtil.getName(constant.getVariableElement()) + "\", ");
    }
    sb.append("\n};");
    stmts.add(new NativeStatement(sb.toString()));
    TypeMirror intType = typeUtil.getInt();
    GeneratedVariableElement loopCounterElement = GeneratedVariableElement.newLocalVar("i", intType, TreeUtil.getEnclosingElement(node));
    VariableDeclarationExpression loopCounter = new VariableDeclarationExpression().setType(Type.newType(loopCounterElement.asType())).addFragment(new VariableDeclarationFragment(loopCounterElement, TreeUtil.newLiteral(0, typeUtil)));
    Expression loopTest = new InfixExpression().setOperator(InfixExpression.Operator.LESS).setTypeMirror(intType).addOperand(new SimpleName(loopCounterElement)).addOperand(TreeUtil.newLiteral(constants.size(), typeUtil));
    Expression loopUpdater = new PostfixExpression(loopCounterElement, PostfixExpression.Operator.INCREMENT);
    Block loopBody = new Block();
    stmts.add(new ForStatement().addInitializer(loopCounter).setExpression(loopTest).addUpdater(loopUpdater).setBody(loopBody));
    String enumClassName = nameTable.getFullName(node.getTypeElement());
    loopBody.addStatement(new NativeStatement("(" + enumClassName + "_values_[i] = e = objc_constructInstance(self, (void *)ptr), ptr += objSize);"));
    loopBody.addStatement(new NativeStatement(enumClassName + "_initWithNSString_withInt_(e, names[i], i);"));
}