Examples with VarSymbol com.sun.tools.javac.code.Symbol.VarSymbol used on opensource projects

Example 56 with VarSymbol

use of com.sun.tools.javac.code.Symbol.VarSymbol in project error-prone by google.

the class DoubleCheckedLocking method findDCL.

/**
 * Matches an instance of DCL. The canonical pattern is:
 *
 * <pre>{@code
 * if ($X == null) {
 *   synchronized (...) {
 *     if ($X == null) {
 *       ...
 *     }
 *     ...
 *   }
 * }
 * }</pre>
 *
 * Gaps before the synchronized or inner 'if' statement are ignored, and the operands in the
 * null-checks are accepted in either order.
 */
@Nullable
static DCLInfo findDCL(IfTree outerIf) {
    // TODO(cushon): Optional.ifPresent...
    ExpressionTree outerIfTest = getNullCheckedExpression(outerIf.getCondition());
    if (outerIfTest == null) {
        return null;
    }
    SynchronizedTree synchTree = getChild(outerIf.getThenStatement(), SynchronizedTree.class);
    if (synchTree == null) {
        return null;
    }
    IfTree innerIf = getChild(synchTree.getBlock(), IfTree.class);
    if (innerIf == null) {
        return null;
    }
    ExpressionTree innerIfTest = getNullCheckedExpression(innerIf.getCondition());
    if (innerIfTest == null) {
        return null;
    }
    Symbol outerSym = ASTHelpers.getSymbol(outerIfTest);
    if (!Objects.equals(outerSym, ASTHelpers.getSymbol(innerIfTest))) {
        return null;
    }
    if (!(outerSym instanceof VarSymbol)) {
        return null;
    }
    VarSymbol var = (VarSymbol) outerSym;
    return DCLInfo.create(outerIf, synchTree, innerIf, var);
}

Example 57 with VarSymbol

use of com.sun.tools.javac.code.Symbol.VarSymbol in project error-prone by google.

the class EqualsReference method matchMethod.

@Override
public Description matchMethod(MethodTree methodTree, VisitorState visitorState) {
    if (EQUALS_MATCHER.matches(methodTree, visitorState)) {
        VariableTree variableTree = methodTree.getParameters().get(0);
        VarSymbol varSymbol = ASTHelpers.getSymbol(variableTree);
        TreeScannerEquals treeScannerEquals = new TreeScannerEquals(methodTree);
        treeScannerEquals.scan(methodTree.getBody(), varSymbol);
        if (treeScannerEquals.hasIllegalEquals) {
            return describeMatch(methodTree);
        }
    }
    return Description.NO_MATCH;
}

Example 58 with VarSymbol

use of com.sun.tools.javac.code.Symbol.VarSymbol in project error-prone by google.

the class CatchFail method catchVariableIsUsed.

private boolean catchVariableIsUsed(CatchTree c) {
    VarSymbol sym = ASTHelpers.getSymbol(c.getParameter());
    boolean[] found = { false };
    c.getBlock().accept(new TreeScanner<Void, Void>() {

        @Override
        public Void visitIdentifier(IdentifierTree node, Void aVoid) {
            if (Objects.equals(sym, ASTHelpers.getSymbol(node))) {
                found[0] = true;
            }
            return super.visitIdentifier(node, aVoid);
        }
    }, null);
    return found[0];
}

Example 59 with VarSymbol

use of com.sun.tools.javac.code.Symbol.VarSymbol in project error-prone by google.

the class HidingField method matchClass.

@Override
public Description matchClass(ClassTree classTree, VisitorState visitorState) {
    List<VariableTree> originalClassMembers = classTree.getMembers().stream().filter(mem -> mem instanceof VariableTree).map(mem -> (VariableTree) mem).filter(mem -> !isSuppressed(ASTHelpers.getSymbol(mem)) && !isIgnoredType(mem) && !isStatic(mem)).collect(toCollection(ArrayList::new));
    ClassSymbol classSymbol = ASTHelpers.getSymbol(classTree);
    while (!Objects.equals(classSymbol.getSuperclass(), Type.noType)) {
        TypeSymbol parentSymbol = classSymbol.getSuperclass().asElement();
        List<Symbol> parentElements = parentSymbol.getEnclosedElements();
        Map<Name, VarSymbol> parentMembers = parentElements.stream().filter(mem -> (mem instanceof VarSymbol)).map(mem -> (VarSymbol) mem).filter(mem -> (!mem.isPrivate() && !mem.getModifiers().contains(Modifier.STATIC))).collect(Collectors.toMap(Symbol::getSimpleName, mem -> mem));
        checkForHiddenFields(originalClassMembers, parentMembers, parentSymbol.getSimpleName(), classTree, visitorState);
        classSymbol = (ClassSymbol) parentSymbol;
    }
    return Description.NO_MATCH;
}

Example 60 with VarSymbol

use of com.sun.tools.javac.code.Symbol.VarSymbol in project error-prone by google.

the class DateFormatConstant method matchVariable.

@Override
public Description matchVariable(VariableTree tree, VisitorState state) {
    if (tree.getInitializer() == null) {
        return NO_MATCH;
    }
    VarSymbol sym = ASTHelpers.getSymbol(tree);
    if (sym == null || sym.getKind() != ElementKind.FIELD) {
        return NO_MATCH;
    }
    String name = sym.getSimpleName().toString();
    if (!(sym.isStatic() && sym.getModifiers().contains(Modifier.FINAL))) {
        return NO_MATCH;
    }
    if (!name.equals(name.toUpperCase())) {
        return NO_MATCH;
    }
    if (!isSubtype(getType(tree), state.getTypeFromString("java.text.DateFormat"), state)) {
        return NO_MATCH;
    }
    return buildDescription(tree).addFix(threadLocalFix(tree, state, sym)).addFix(renameVariable(tree, CaseFormat.UPPER_UNDERSCORE.to(CaseFormat.LOWER_CAMEL, tree.getName().toString()), state)).build();
}