Examples with VariableTree com.sun.source.tree.VariableTree used on opensource projects

Example 1 with VariableTree

use of com.sun.source.tree.VariableTree in project bazel by bazelbuild.

the class TreeUtils method getAssignmentContext.

/**
     * Returns the tree with the assignment context for the treePath
     * leaf node.
     *
     * The assignment context for the treepath is the most enclosing
     * tree of type:
     * <ul>
     *   <li>AssignmentTree </li>
     *   <li>CompoundAssignmentTree </li>
     *   <li>MethodInvocationTree</li>
     *   <li>NewArrayTree</li>
     *   <li>NewClassTree</li>
     *   <li>ReturnTree</li>
     *   <li>VariableTree</li>
     * </ul>
     *
     * @param treePath
     * @return  the assignment context as described.
     */
public static Tree getAssignmentContext(final TreePath treePath) {
    TreePath path = treePath.getParentPath();
    if (path == null)
        return null;
    Tree node = path.getLeaf();
    if ((node instanceof AssignmentTree) || (node instanceof CompoundAssignmentTree) || (node instanceof MethodInvocationTree) || (node instanceof NewArrayTree) || (node instanceof NewClassTree) || (node instanceof ReturnTree) || (node instanceof VariableTree))
        return node;
    return null;
}

Example 2 with VariableTree

use of com.sun.source.tree.VariableTree in project error-prone by google.

the class FieldMissingNullable method findDeclaration.

@Nullable
private VariableTree findDeclaration(VisitorState state, Symbol field) {
    JavacProcessingEnvironment javacEnv = JavacProcessingEnvironment.instance(state.context);
    TreePath fieldDeclPath = Trees.instance(javacEnv).getPath(field);
    // Skip fields declared in other compilation units since we can't make a fix for them here.
    if (fieldDeclPath != null && fieldDeclPath.getCompilationUnit() == state.getPath().getCompilationUnit() && (fieldDeclPath.getLeaf() instanceof VariableTree)) {
        return (VariableTree) fieldDeclPath.getLeaf();
    }
    return null;
}

Example 3 with VariableTree

use of com.sun.source.tree.VariableTree in project error-prone by google.

the class ParameterNotNullable method findDeclaration.

@Nullable
private VariableTree findDeclaration(VisitorState state, Symbol parameter) {
    JavacProcessingEnvironment javacEnv = JavacProcessingEnvironment.instance(state.context);
    TreePath declPath = Trees.instance(javacEnv).getPath(parameter);
    if (declPath != null && declPath.getCompilationUnit() == state.getPath().getCompilationUnit() && (declPath.getLeaf() instanceof VariableTree)) {
        return (VariableTree) declPath.getLeaf();
    }
    return null;
}

Example 4 with VariableTree

use of com.sun.source.tree.VariableTree in project error-prone by google.

the class TryFailThrowable method tryTreeMatches.

private static MatchResult tryTreeMatches(TryTree tryTree, VisitorState state) {
    BlockTree tryBlock = tryTree.getBlock();
    List<? extends StatementTree> statements = tryBlock.getStatements();
    if (statements.isEmpty()) {
        return doesNotMatch();
    }
    // Check if any of the statements is a fail or assert* method (i.e. any
    // method that can throw an AssertionFailedError)
    StatementTree failStatement = null;
    for (StatementTree statement : statements) {
        if (!(statement instanceof ExpressionStatementTree)) {
            continue;
        }
        if (failOrAssert.matches(((ExpressionStatementTree) statement).getExpression(), state)) {
            failStatement = statement;
            break;
        }
    }
    if (failStatement == null) {
        return doesNotMatch();
    }
    // Verify that the only catch clause catches Throwable
    List<? extends CatchTree> catches = tryTree.getCatches();
    if (catches.size() != 1) {
        // to be checked - it would either be Throwable or Error.
        return doesNotMatch();
    }
    CatchTree catchTree = catches.get(0);
    VariableTree catchType = catchTree.getParameter();
    boolean catchesThrowable = javaLangThrowable.matches(catchType, state);
    boolean catchesError = javaLangError.matches(catchType, state);
    boolean catchesOtherError = someAssertionFailure.matches(catchType, state);
    if (!catchesThrowable && !catchesError && !catchesOtherError) {
        return doesNotMatch();
    }
    // Verify that the catch block is empty or contains only comments.
    List<? extends StatementTree> catchStatements = catchTree.getBlock().getStatements();
    for (StatementTree catchStatement : catchStatements) {
        // or a list of empty statements.
        if (!Matchers.<Tree>kindIs(EMPTY_STATEMENT).matches(catchStatement, state)) {
            return doesNotMatch();
        }
    }
    return matches(failStatement, catchesThrowable ? JAVA_LANG_THROWABLE : catchesError ? JAVA_LANG_ERROR : SOME_ASSERTION_FAILURE);
}

Example 5 with VariableTree

use of com.sun.source.tree.VariableTree in project error-prone by google.

the class FilesLinesLeak method matchMethodInvocation.

@Override
public Description matchMethodInvocation(MethodInvocationTree tree, VisitorState state) {
    if (!MATCHER.matches(tree, state)) {
        return NO_MATCH;
    }
    if (inTWR(state)) {
        return NO_MATCH;
    }
    Description.Builder description = buildDescription(tree);
    Tree parent = state.getPath().getParentPath().getLeaf();
    if (parent instanceof MemberSelectTree) {
        MemberSelectTree select = (MemberSelectTree) parent;
        StatementTree statement = state.findEnclosing(StatementTree.class);
        SuggestedFix.Builder fix = SuggestedFix.builder();
        if (statement instanceof VariableTree) {
            VariableTree var = (VariableTree) statement;
            int pos = ((JCTree) var).getStartPosition();
            int initPos = ((JCTree) var.getInitializer()).getStartPosition();
            int eqPos = pos + state.getSourceForNode(var).substring(0, initPos - pos).lastIndexOf('=');
            fix.replace(eqPos, initPos, String.format(";\ntry (Stream<String> stream = %s) {\n%s =", state.getSourceForNode(tree), var.getName().toString()));
        } else {
            fix.prefixWith(statement, String.format("try (Stream<String> stream = %s) {\n", state.getSourceForNode(tree)));
            fix.replace(select.getExpression(), "stream");
        }
        fix.replace(tree, "stream");
        fix.postfixWith(statement, "}");
        fix.addImport("java.util.stream.Stream");
        description.addFix(fix.build());
    }
    return description.build();
}