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

Example 1 with Pair

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

the class StringBuilderRefactoring method visit.

@Override
public boolean visit(InfixExpression node) {
    if (isStringConcat(node)) {
        final LinkedList<Pair<ITypeBinding, Expression>> allOperands = new LinkedList<Pair<ITypeBinding, Expression>>();
        readSubExpressions(node, allOperands, new AtomicBoolean(false));
        boolean replaceNeeded = filterOutEmptyStringsFromStringConcat(allOperands);
        if (replaceNeeded) {
            this.ctx.getRefactorings().replace(node, createStringConcats(allOperands));
            return DO_NOT_VISIT_SUBTREE;
        }
    }
    return VISIT_SUBTREE;
}

Example 2 with Pair

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

the class StringBuilderRefactoring method maybeRefactorAppending.

private boolean maybeRefactorAppending(Expression node) {
    final LinkedList<Pair<ITypeBinding, Expression>> allAppendedStrings = new LinkedList<Pair<ITypeBinding, Expression>>();
    final AtomicBoolean isRefactoringNeeded = new AtomicBoolean(false);
    final AtomicBoolean isInstanceCreationToRewrite = new AtomicBoolean(false);
    final Expression lastExpr = readAppendMethod(node, allAppendedStrings, isRefactoringNeeded, isInstanceCreationToRewrite);
    if (lastExpr != null) {
        removeEmptyStrings(allAppendedStrings, isRefactoringNeeded);
        removeCallsToToString(allAppendedStrings, isRefactoringNeeded, isInstanceCreationToRewrite.get());
        if (isRefactoringNeeded.get()) {
            if (allAppendedStrings.isEmpty() && isVariable(lastExpr) && node.getParent() instanceof Statement) {
                ctx.getRefactorings().remove(node.getParent());
            } else {
                replaceWithNewStringAppends(node, allAppendedStrings, lastExpr, isInstanceCreationToRewrite.get());
            }
            return DO_NOT_VISIT_SUBTREE;
        }
    }
    return VISIT_SUBTREE;
}

Example 3 with Pair

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

the class ForLoopHelper method iterateOverContainer.

/**
 * Returns the {@link ForLoopContent} if this for loop iterates over a container.
 *
 * @param node the for statement
 * @return the {@link ForLoopContent} if this for loop iterates over a container, null otherwise
 */
public static ForLoopContent iterateOverContainer(ForStatement node) {
    final List<Expression> initializers = initializers(node);
    final Expression condition = node.getExpression();
    final List<Expression> updaters = updaters(node);
    if (initializers.size() == 1) {
        Expression firstInit = initializers.get(0);
        if (updaters.isEmpty()) {
            final Pair<Name, Expression> initPair = decomposeInitializer(firstInit);
            final Name init = initPair.getFirst();
            final MethodInvocation condMi = as(node.getExpression(), MethodInvocation.class);
            final MethodInvocation initMi = as(initPair.getSecond(), MethodInvocation.class);
            if (condMi != null && isSameVariable(init, condMi.getExpression()) && isMethod(initMi, "java.util.Collection", "iterator") && isMethod(condMi, "java.util.Iterator", "hasNext")) {
                return getIteratorOnCollection(initMi.getExpression(), condMi.getExpression());
            }
        } else if (updaters.size() == 1 && isPrimitive(firstInit, "int")) {
            final Pair<Name, Expression> initPair = decomposeInitializer(firstInit);
            final Name init = initPair.getFirst();
            final ForLoopContent forContent = getIndexOnIterable(condition, init);
            final Name updater = getUpdaterOperand(updaters.get(0));
            if (forContent != null && isZero(initPair.getSecond()) && isSameVariable(init, forContent.loopVariable) && isSameVariable(init, updater)) {
                return forContent;
            }
        }
    }
    return null;
}

Example 4 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 5 with Pair

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

the class StringBuilderCleanUp method maybeRefactorAppending.

private boolean maybeRefactorAppending(final Expression visited) {
    List<Pair<ITypeBinding, Expression>> allAppendedStrings = new LinkedList<>();
    AtomicBoolean isRefactoringNeeded = new AtomicBoolean(false);
    AtomicBoolean isInstanceCreationToRewrite = new AtomicBoolean(false);
    Expression lastExpression = readAppendMethod(visited, allAppendedStrings, isRefactoringNeeded, isInstanceCreationToRewrite);
    if (lastExpression != null) {
        removeEmptyStrings(allAppendedStrings, isRefactoringNeeded);
        removeCallsToToString(allAppendedStrings, isRefactoringNeeded);
        if (isRefactoringNeeded.get()) {
            if (!allAppendedStrings.isEmpty() || !isVariable(lastExpression) || !(visited.getParent() instanceof Statement)) {
                return maybeReplaceWithNewStringAppends(visited, allAppendedStrings, lastExpression, isInstanceCreationToRewrite.get());
            }
            refactorAppending(visited);
            return false;
        }
    }
    return true;
}