Examples with Pair org.autorefactor.util.Pair used on opensource projects

Example 6 with Pair

use of org.autorefactor.util.Pair in project AutoRefactor by JnRouvignac.

the class ObsoleteIfRatherThanTwoSwitchCasesCleanUp method visit.

@SuppressWarnings("deprecation")
@Override
public boolean visit(final SwitchStatement visited) {
    List<?> statements = visited.statements();
    if (statements.isEmpty()) {
        return true;
    }
    Set<SimpleName> previousVarIds = new HashSet<>();
    Set<SimpleName> caseVarIds = new HashSet<>();
    List<Pair<List<Expression>, List<Statement>>> switchStructure = new ArrayList<>();
    List<Expression> caseExprs = new ArrayList<>();
    List<Statement> caseStatements = new ArrayList<>();
    boolean isPreviousStmtACase = true;
    int caseIndexWithDefault = -1;
    for (Object object : statements) {
        Statement statement = (Statement) object;
        if (statement instanceof SwitchCase) {
            if (!isPreviousStmtACase) {
                if (switchStructure.size() > 2) {
                    return true;
                }
                previousVarIds.addAll(caseVarIds);
                caseVarIds.clear();
                switchStructure.add(Pair.<List<Expression>, List<Statement>>of(caseExprs, caseStatements));
                caseExprs = new ArrayList<>();
                caseStatements = new ArrayList<>();
            }
            if (((SwitchCase) statement).isDefault()) {
                caseIndexWithDefault = switchStructure.size();
            } else {
                caseExprs.add(((SwitchCase) statement).getExpression());
            }
            isPreviousStmtACase = true;
        } else {
            VarConflictVisitor varOccurrenceVisitor = new VarConflictVisitor(previousVarIds, false);
            varOccurrenceVisitor.traverseNodeInterruptibly(statement);
            if (varOccurrenceVisitor.isVarConflicting()) {
                return true;
            }
            caseVarIds.addAll(ASTNodes.getLocalVariableIdentifiers(statement, false));
            caseStatements.add(statement);
            isPreviousStmtACase = false;
        }
    }
    switchStructure.add(Pair.<List<Expression>, List<Statement>>of(caseExprs, caseStatements));
    if (caseIndexWithDefault != -1) {
        Pair<List<Expression>, List<Statement>> caseWithDefault = switchStructure.remove(caseIndexWithDefault);
        switchStructure.add(caseWithDefault);
    }
    if (switchStructure.size() > 2 || !switchStructure.get(switchStructure.size() - 1).getFirst().isEmpty() && !ASTNodes.isPassive(visited.getExpression())) {
        return true;
    }
    List<BreakStatement> overBreaks = new ArrayList<>();
    for (int i = 0; i < switchStructure.size(); i++) {
        Pair<List<Expression>, List<Statement>> caseStructure = switchStructure.get(i);
        if (!caseStructure.getSecond().isEmpty()) {
            Statement lastStatement = caseStructure.getSecond().get(caseStructure.getSecond().size() - 1);
            if (i < switchStructure.size() - 1 && !ASTNodes.fallsThrough(lastStatement)) {
                return true;
            }
            BreakStatement breakStatement = ASTNodes.as(lastStatement, BreakStatement.class);
            if (breakStatement != null && breakStatement.getLabel() == null) {
                caseStructure.getSecond().remove(caseStructure.getSecond().size() - 1);
            }
        } else if (i < switchStructure.size() - 1) {
            return true;
        }
    }
    for (Pair<List<Expression>, List<Statement>> caseStructure : switchStructure) {
        for (Statement oneStatement : caseStructure.getSecond()) {
            BreakVisitor breakVisitor = new BreakVisitor();
            breakVisitor.traverseNodeInterruptibly(oneStatement);
            if (!breakVisitor.canBeRefactored()) {
                return true;
            }
            overBreaks.addAll(breakVisitor.getBreaks());
        }
    }
    replaceBySwitch(visited, switchStructure, caseIndexWithDefault, overBreaks);
    return false;
}

Example 7 with Pair

use of org.autorefactor.util.Pair in project AutoRefactor by JnRouvignac.

the class ObsoleteCommonCodeInIfElseStatementCleanUp method getMatchingCases.

private List<Integer> getMatchingCases(final List<List<Statement>> allCasesStatements, final ASTSemanticMatcher matcher) {
    List<Pair<Statement, List<Integer>>> matchingCases = new ArrayList<>();
    for (int i = 0; i < allCasesStatements.size(); i++) {
        boolean isMatching = false;
        Statement currentStatement = allCasesStatements.get(i).get(allCasesStatements.get(i).size() - 1);
        for (Pair<Statement, List<Integer>> pair : matchingCases) {
            if (ASTNodes.match(matcher, pair.getFirst(), currentStatement)) {
                pair.getSecond().add(i);
                isMatching = true;
                break;
            }
        }
        if (!isMatching) {
            Pair<Statement, List<Integer>> newPair = Pair.<Statement, List<Integer>>of(currentStatement, new ArrayList<>());
            newPair.getSecond().add(i);
            matchingCases.add(newPair);
        }
    }
    if (matchingCases.isEmpty()) {
        return null;
    }
    Collections.sort(matchingCases, (o1, o2) -> Integer.compare(o2.getSecond().size(), o1.getSecond().size()));
    Pair<Statement, List<Integer>> notFallingThroughCase = null;
    for (Pair<Statement, List<Integer>> matchingCase : matchingCases) {
        if (!ASTNodes.fallsThrough(matchingCase.getFirst())) {
            if (notFallingThroughCase != null) {
                return null;
            }
            notFallingThroughCase = matchingCase;
        }
    }
    if (notFallingThroughCase != null) {
        return notFallingThroughCase.getSecond();
    }
    return matchingCases.get(0).getSecond();
}

Example 8 with Pair

use of org.autorefactor.util.Pair in project AutoRefactor by JnRouvignac.

the class CommentsCleanUp method betterCommentExist.

private boolean betterCommentExist(final Comment comment, final ASTNode nodeWhereToAddJavadoc) {
    if (hasJavadoc(nodeWhereToAddJavadoc)) {
        return true;
    }
    SourceLocation nodeLoc = new SourceLocation(nodeWhereToAddJavadoc);
    SourceLocation bestLoc = new SourceLocation(comment);
    Comment bestComment = comment;
    for (Iterator<Pair<SourceLocation, Comment>> iter = this.comments.iterator(); iter.hasNext(); ) {
        Pair<SourceLocation, Comment> pair = iter.next();
        SourceLocation newLoc = pair.getFirst();
        Comment newComment = pair.getSecond();
        if (newLoc.compareTo(bestLoc) < 0) {
            // Since comments are visited in ascending order,
            // we can forget this comment.
            iter.remove();
            continue;
        }
        if (nodeLoc.compareTo(newLoc) < 0) {
            break;
        }
        if (bestLoc.compareTo(newLoc) < 0 && (!(newComment instanceof LineComment) || !(bestComment instanceof LineComment))) {
            // New comment is a BlockComment or a Javadoc
            bestLoc = newLoc;
            bestComment = newComment;
            continue;
        }
    }
    return bestComment != null && bestComment != comment;
}

Example 9 with Pair

use of org.autorefactor.util.Pair in project AutoRefactor by JnRouvignac.

the class StringBuilderCleanUp method visit.

@Override
public boolean visit(final MethodInvocation visited) {
    if (visited.getExpression() != null && // $NON-NLS-1$
    "append".equals(visited.getName().getIdentifier()) && visited.arguments().size() == 1 && // Most expensive check comes last
    ASTNodes.hasType(visited.getExpression(), StringBuilder.class.getCanonicalName(), StringBuffer.class.getCanonicalName())) {
        return maybeRefactorAppending(visited);
    }
    if (// $NON-NLS-1$
    ASTNodes.usesGivenSignature(visited, StringBuilder.class.getCanonicalName(), "toString") || ASTNodes.usesGivenSignature(visited, StringBuffer.class.getCanonicalName(), "toString")) {
        // $NON-NLS-1$
        List<Pair<ITypeBinding, Expression>> allAppendedStrings = new LinkedList<>();
        Expression lastExpression = readAppendMethod(visited.getExpression(), allAppendedStrings, new AtomicBoolean(false), new AtomicBoolean(false));
        if (lastExpression instanceof ClassInstanceCreation) {
            // Replace with String concatenation
            TextEditGroup group = new TextEditGroup(MultiFixMessages.StringBuilderCleanUp_description);
            ASTRewrite rewrite = cuRewrite.getASTRewrite();
            rewrite.replace(visited, createStringConcats(allAppendedStrings), group);
            return false;
        }
    }
    return true;
}

Example 10 with Pair

use of org.autorefactor.util.Pair in project AutoRefactor by JnRouvignac.

the class CommentsRefactoring method betterCommentExist.

private boolean betterCommentExist(Comment comment, ASTNode nodeWhereToAddJavadoc) {
    if (hasJavadoc(nodeWhereToAddJavadoc)) {
        return true;
    }
    final SourceLocation nodeLoc = new SourceLocation(nodeWhereToAddJavadoc);
    SourceLocation bestLoc = new SourceLocation(comment);
    Comment bestComment = comment;
    for (Iterator<Pair<SourceLocation, Comment>> iter = this.comments.iterator(); iter.hasNext(); ) {
        final Pair<SourceLocation, Comment> pair = iter.next();
        final SourceLocation newLoc = pair.getFirst();
        final Comment newComment = pair.getSecond();
        if (newLoc.compareTo(bestLoc) < 0) {
            // since comments are visited in ascending order,
            // we can forget this comment.
            iter.remove();
            continue;
        }
        if (nodeLoc.compareTo(newLoc) < 0) {
            break;
        }
        if (bestLoc.compareTo(newLoc) < 0) {
            if (!(newComment instanceof LineComment)) {
                // new comment is a BlockComment or a Javadoc
                bestLoc = newLoc;
                bestComment = newComment;
                continue;
            } else if (!(bestComment instanceof LineComment)) {
                // new comment is a line comment and best comment is not
                bestLoc = newLoc;
                bestComment = newComment;
                continue;
            }
        }
    }
    return bestComment != null && bestComment != comment;
}