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

Example 6 with IfStatement

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

the class RewriterTest method testLabeledBreakWithNonBlockParent.

public void testLabeledBreakWithNonBlockParent() throws IOException {
    List<Statement> stmts = translateStatements("int i = 0; if (i == 0) outer: for (; i < 10; i++) { " + "for (int j = 0; j < 10; j++) { break outer; }}");
    assertEquals(2, stmts.size());
    Statement s = stmts.get(1);
    assertTrue(s instanceof IfStatement);
    s = ((IfStatement) s).getThenStatement();
    assertTrue(s instanceof Block);
    stmts = ((Block) s).getStatements();
    assertEquals(2, stmts.size());
    s = stmts.get(0);
    // not LabeledStatement
    assertTrue(s instanceof ForStatement);
    ForStatement fs = (ForStatement) s;
    Statement forStmt = fs.getBody();
    assertTrue(forStmt instanceof Block);
    assertEquals(1, ((Block) forStmt).getStatements().size());
    Statement labelStmt = stmts.get(1);
    assertTrue(labelStmt instanceof LabeledStatement);
    assertTrue(((LabeledStatement) labelStmt).getBody() instanceof EmptyStatement);
}

Example 7 with IfStatement

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

the class UnsequencedExpressionRewriter method extractConditionalExpression.

private void extractConditionalExpression(List<Statement> stmtList, ConditionalExpression conditional, List<VariableAccess> toExtract) {
    Expression condition = conditional.getExpression();
    Expression thenExpr = conditional.getThenExpression();
    Expression elseExpr = conditional.getElseExpression();
    List<VariableAccess> conditionAccesses = Lists.newArrayList();
    List<VariableAccess> thenAccesses = Lists.newArrayList();
    List<VariableAccess> elseAccesses = Lists.newArrayList();
    boolean needsExtraction = false;
    for (VariableAccess access : toExtract) {
        TreeNode node = access.expression;
        while (node.getParent() != conditional) {
            node = node.getParent();
        }
        if (node == condition) {
            conditionAccesses.add(access);
        } else if (node == thenExpr) {
            thenAccesses.add(access);
        } else if (node == elseExpr) {
            elseAccesses.add(access);
        } else {
            throw new AssertionError();
        }
        if (node != condition) {
            // We need to extract an if-statement if there is an access that
            // executes conditionally.
            needsExtraction = true;
        }
    }
    extractOrderedAccesses(stmtList, condition, conditionAccesses);
    // The recursive call might replace the condition child.
    condition = conditional.getExpression();
    if (needsExtraction) {
        VariableElement resultVar = GeneratedVariableElement.newLocalVar("unseq$" + count++, conditional.getTypeMirror(), currentMethod);
        conditional.replaceWith(new SimpleName(resultVar));
        stmtList.add(new VariableDeclarationStatement(resultVar, null));
        IfStatement newIf = new IfStatement();
        newIf.setExpression(condition.copy());
        stmtList.add(newIf);
        Block thenBlock = new Block();
        newIf.setThenStatement(thenBlock);
        List<Statement> thenStmts = thenBlock.getStatements();
        extractOrderedAccesses(thenStmts, thenExpr, thenAccesses);
        // The recursive call might replace the then expression child.
        thenExpr = conditional.getThenExpression();
        thenStmts.add(new ExpressionStatement(new Assignment(new SimpleName(resultVar), thenExpr.copy())));
        Block elseBlock = new Block();
        newIf.setElseStatement(elseBlock);
        List<Statement> elseStmts = elseBlock.getStatements();
        extractOrderedAccesses(elseStmts, elseExpr, elseAccesses);
        // The recursive call might replace the else expression child.
        elseExpr = conditional.getElseExpression();
        elseStmts.add(new ExpressionStatement(new Assignment(new SimpleName(resultVar), elseExpr.copy())));
    } else {
        extractOrderedAccesses(stmtList, thenExpr, thenAccesses);
        extractOrderedAccesses(stmtList, elseExpr, elseAccesses);
    }
}