Examples with MustBeClosed com.google.errorprone.annotations.MustBeClosed used on opensource projects

Example 1 with MustBeClosed

use of com.google.errorprone.annotations.MustBeClosed in project error-prone by google.

the class MustBeClosedChecker method matchNewClassOrMethodInvocation.

/**
   * Check that constructors and methods annotated with {@link MustBeClosed} occur within the
   * resource variable initializer of a try-with-resources statement.
   *
   * @param name The name of the method or constructor.
   */
private Description matchNewClassOrMethodInvocation(String name, Tree tree, VisitorState state) {
    if (!HAS_MUST_BE_CLOSED_ANNOTATION.matches(tree, state)) {
        // {@link MustBeClosed}.
        return NO_MATCH;
    }
    String errorMessage = String.format("%s must be called within the resource variable initializer of a try-with-resources" + " statement.", name);
    MethodTree callerMethodTree = enclosingMethod(state);
    if (state.getPath().getParentPath().getLeaf().getKind() == Tree.Kind.RETURN && callerMethodTree != null) {
        if (HAS_MUST_BE_CLOSED_ANNOTATION.matches(callerMethodTree, state)) {
            // statement of an annotated caller method, since invocations of the caller are enforced.
            return NO_MATCH;
        }
        // enforced. Suggest fixing this by annotating the caller method.
        return buildDescription(tree).addFix(SuggestedFix.builder().prefixWith(callerMethodTree, "@MustBeClosed\n").addImport(MustBeClosed.class.getCanonicalName()).build()).setMessage(errorMessage).build();
    }
    if (!inTWR(state)) {
        // initializer of a try-with-resources statement.
        return buildDescription(tree).setMessage(errorMessage).build();
    }
    return NO_MATCH;
}