Examples with Statement org.eclipse.jdt.internal.compiler.ast.Statement used on opensource projects

Example 26 with Statement

use of org.eclipse.jdt.internal.compiler.ast.Statement in project lombok by rzwitserloot.

the class HandleNonNull method handle.

@Override
public void handle(AnnotationValues<NonNull> annotation, Annotation ast, EclipseNode annotationNode) {
    handleFlagUsage(annotationNode, ConfigurationKeys.NON_NULL_FLAG_USAGE, "@NonNull");
    if (annotationNode.up().getKind() == Kind.FIELD) {
        try {
            if (isPrimitive(((AbstractVariableDeclaration) annotationNode.up().get()).type)) {
                annotationNode.addWarning("@NonNull is meaningless on a primitive.");
            }
        } catch (Exception ignore) {
        }
        return;
    }
    if (annotationNode.up().getKind() != Kind.ARGUMENT)
        return;
    Argument arg;
    AbstractMethodDeclaration declaration;
    try {
        arg = (Argument) annotationNode.up().get();
        declaration = (AbstractMethodDeclaration) annotationNode.up().up().get();
    } catch (Exception e) {
        return;
    }
    if (isGenerated(declaration))
        return;
    if (declaration.isAbstract()) {
        // This used to be a warning, but as @NonNull also has a documentary purpose, better to not warn about this. Since 1.16.7
        return;
    }
    // Possibly, if 'declaration instanceof ConstructorDeclaration', fetch declaration.constructorCall, search it for any references to our parameter,
    // and if they exist, create a new method in the class: 'private static <T> T lombok$nullCheck(T expr, String msg) {if (expr == null) throw NPE; return expr;}' and
    // wrap all references to it in the super/this to a call to this method.
    Statement nullCheck = generateNullCheck(arg, annotationNode);
    if (nullCheck == null) {
        // @NonNull applied to a primitive. Kinda pointless. Let's generate a warning.
        annotationNode.addWarning("@NonNull is meaningless on a primitive.");
        return;
    }
    if (declaration.statements == null) {
        declaration.statements = new Statement[] { nullCheck };
    } else {
        char[] expectedName = arg.name;
        /* Abort if the null check is already there, delving into try and synchronized statements */
        {
            Statement[] stats = declaration.statements;
            int idx = 0;
            while (stats != null && stats.length > idx) {
                Statement stat = stats[idx++];
                if (stat instanceof TryStatement) {
                    stats = ((TryStatement) stat).tryBlock.statements;
                    idx = 0;
                    continue;
                }
                if (stat instanceof SynchronizedStatement) {
                    stats = ((SynchronizedStatement) stat).block.statements;
                    idx = 0;
                    continue;
                }
                char[] varNameOfNullCheck = returnVarNameIfNullCheck(stat);
                if (varNameOfNullCheck == null)
                    break;
                if (Arrays.equals(varNameOfNullCheck, expectedName))
                    return;
            }
        }
        Statement[] newStatements = new Statement[declaration.statements.length + 1];
        int skipOver = 0;
        for (Statement stat : declaration.statements) {
            if (isGenerated(stat) && isNullCheck(stat))
                skipOver++;
            else
                break;
        }
        System.arraycopy(declaration.statements, 0, newStatements, 0, skipOver);
        System.arraycopy(declaration.statements, skipOver, newStatements, skipOver + 1, declaration.statements.length - skipOver);
        newStatements[skipOver] = nullCheck;
        declaration.statements = newStatements;
    }
    annotationNode.up().up().rebuild();
}

Example 27 with Statement

use of org.eclipse.jdt.internal.compiler.ast.Statement in project lombok by rzwitserloot.

the class EclipseJavaUtilListSetSingularizer method generateClearMethod.

private void generateClearMethod(TypeReference returnType, Statement returnStatement, SingularData data, EclipseNode builderType) {
    MethodDeclaration md = new MethodDeclaration(((CompilationUnitDeclaration) builderType.top().get()).compilationResult);
    md.bits |= ECLIPSE_DO_NOT_TOUCH_FLAG;
    md.modifiers = ClassFileConstants.AccPublic;
    FieldReference thisDotField = new FieldReference(data.getPluralName(), 0L);
    thisDotField.receiver = new ThisReference(0, 0);
    FieldReference thisDotField2 = new FieldReference(data.getPluralName(), 0L);
    thisDotField2.receiver = new ThisReference(0, 0);
    md.selector = HandlerUtil.buildAccessorName("clear", new String(data.getPluralName())).toCharArray();
    MessageSend clearMsg = new MessageSend();
    clearMsg.receiver = thisDotField2;
    clearMsg.selector = "clear".toCharArray();
    Statement clearStatement = new IfStatement(new EqualExpression(thisDotField, new NullLiteral(0, 0), OperatorIds.NOT_EQUAL), clearMsg, 0, 0);
    md.statements = returnStatement != null ? new Statement[] { clearStatement, returnStatement } : new Statement[] { clearStatement };
    md.returnType = returnType;
    injectMethod(builderType, md);
}

Example 28 with Statement

use of org.eclipse.jdt.internal.compiler.ast.Statement in project lombok by rzwitserloot.

the class EclipseJavaUtilListSingularizer method appendBuildCode.

@Override
public void appendBuildCode(SingularData data, EclipseNode builderType, List<Statement> statements, char[] targetVariableName) {
    if (useGuavaInstead(builderType)) {
        guavaListSetSingularizer.appendBuildCode(data, builderType, statements, targetVariableName);
        return;
    }
    List<Statement> switchContents = new ArrayList<Statement>();
    /* case 0: (empty) break; */
    {
        switchContents.add(new CaseStatement(makeIntLiteral(new char[] { '0' }, null), 0, 0));
        MessageSend invoke = new MessageSend();
        invoke.receiver = new QualifiedNameReference(JAVA_UTIL_COLLECTIONS, NULL_POSS, 0, 0);
        invoke.selector = "emptyList".toCharArray();
        switchContents.add(new Assignment(new SingleNameReference(data.getPluralName(), 0), invoke, 0));
        switchContents.add(new BreakStatement(null, 0, 0));
    }
    /* case 1: (singleton) break; */
    {
        switchContents.add(new CaseStatement(makeIntLiteral(new char[] { '1' }, null), 0, 0));
        FieldReference thisDotField = new FieldReference(data.getPluralName(), 0L);
        thisDotField.receiver = new ThisReference(0, 0);
        MessageSend thisDotFieldGet0 = new MessageSend();
        thisDotFieldGet0.receiver = thisDotField;
        thisDotFieldGet0.selector = new char[] { 'g', 'e', 't' };
        thisDotFieldGet0.arguments = new Expression[] { makeIntLiteral(new char[] { '0' }, null) };
        Expression[] args = new Expression[] { thisDotFieldGet0 };
        MessageSend invoke = new MessageSend();
        invoke.receiver = new QualifiedNameReference(JAVA_UTIL_COLLECTIONS, NULL_POSS, 0, 0);
        invoke.selector = "singletonList".toCharArray();
        invoke.arguments = args;
        switchContents.add(new Assignment(new SingleNameReference(data.getPluralName(), 0), invoke, 0));
        switchContents.add(new BreakStatement(null, 0, 0));
    }
    /* default: Create by passing builder field to constructor. */
    {
        switchContents.add(new CaseStatement(null, 0, 0));
        Expression argToUnmodifiable;
        /* new j.u.ArrayList<Generics>(this.pluralName); */
        {
            FieldReference thisDotPluralName = new FieldReference(data.getPluralName(), 0L);
            thisDotPluralName.receiver = new ThisReference(0, 0);
            TypeReference targetTypeExpr = new QualifiedTypeReference(JAVA_UTIL_ARRAYLIST, NULL_POSS);
            targetTypeExpr = addTypeArgs(1, false, builderType, targetTypeExpr, data.getTypeArgs());
            AllocationExpression constructorCall = new AllocationExpression();
            constructorCall.type = targetTypeExpr;
            constructorCall.arguments = new Expression[] { thisDotPluralName };
            argToUnmodifiable = constructorCall;
        }
        /* pluralname = Collections.unmodifiableList(-newlist-); */
        {
            MessageSend unmodInvoke = new MessageSend();
            unmodInvoke.receiver = new QualifiedNameReference(JAVA_UTIL_COLLECTIONS, NULL_POSS, 0, 0);
            unmodInvoke.selector = "unmodifiableList".toCharArray();
            unmodInvoke.arguments = new Expression[] { argToUnmodifiable };
            switchContents.add(new Assignment(new SingleNameReference(data.getPluralName(), 0), unmodInvoke, 0));
        }
    }
    SwitchStatement switchStat = new SwitchStatement();
    switchStat.statements = switchContents.toArray(new Statement[switchContents.size()]);
    switchStat.expression = getSize(builderType, data.getPluralName(), true);
    TypeReference localShadowerType = new QualifiedTypeReference(Eclipse.fromQualifiedName(data.getTargetFqn()), NULL_POSS);
    localShadowerType = addTypeArgs(1, false, builderType, localShadowerType, data.getTypeArgs());
    LocalDeclaration varDefStat = new LocalDeclaration(data.getPluralName(), 0, 0);
    varDefStat.type = localShadowerType;
    statements.add(varDefStat);
    statements.add(switchStat);
}

Example 29 with Statement

use of org.eclipse.jdt.internal.compiler.ast.Statement in project lombok by rzwitserloot.

the class EclipseJavaUtilMapSingularizer method generateClearMethod.

private void generateClearMethod(TypeReference returnType, Statement returnStatement, SingularData data, EclipseNode builderType) {
    MethodDeclaration md = new MethodDeclaration(((CompilationUnitDeclaration) builderType.top().get()).compilationResult);
    md.bits |= ECLIPSE_DO_NOT_TOUCH_FLAG;
    md.modifiers = ClassFileConstants.AccPublic;
    String pN = new String(data.getPluralName());
    char[] keyFieldName = (pN + "$key").toCharArray();
    char[] valueFieldName = (pN + "$value").toCharArray();
    FieldReference thisDotField = new FieldReference(keyFieldName, 0L);
    thisDotField.receiver = new ThisReference(0, 0);
    FieldReference thisDotField2 = new FieldReference(keyFieldName, 0L);
    thisDotField2.receiver = new ThisReference(0, 0);
    FieldReference thisDotField3 = new FieldReference(valueFieldName, 0L);
    thisDotField3.receiver = new ThisReference(0, 0);
    md.selector = HandlerUtil.buildAccessorName("clear", new String(data.getPluralName())).toCharArray();
    MessageSend clearMsg1 = new MessageSend();
    clearMsg1.receiver = thisDotField2;
    clearMsg1.selector = "clear".toCharArray();
    MessageSend clearMsg2 = new MessageSend();
    clearMsg2.receiver = thisDotField3;
    clearMsg2.selector = "clear".toCharArray();
    Block clearMsgs = new Block(2);
    clearMsgs.statements = new Statement[] { clearMsg1, clearMsg2 };
    Statement clearStatement = new IfStatement(new EqualExpression(thisDotField, new NullLiteral(0, 0), OperatorIds.NOT_EQUAL), clearMsgs, 0, 0);
    md.statements = returnStatement != null ? new Statement[] { clearStatement, returnStatement } : new Statement[] { clearStatement };
    md.returnType = returnType;
    injectMethod(builderType, md);
}

Example 30 with Statement

use of org.eclipse.jdt.internal.compiler.ast.Statement in project lombok by rzwitserloot.

the class EclipseJavaUtilSingularizer method createConstructBuilderVarIfNeeded.

protected Statement createConstructBuilderVarIfNeeded(SingularData data, EclipseNode builderType, boolean mapMode) {
    char[] v1Name, v2Name;
    if (mapMode) {
        String n = new String(data.getPluralName());
        v1Name = (n + "$key").toCharArray();
        v2Name = (n + "$value").toCharArray();
    } else {
        v1Name = data.getPluralName();
        v2Name = null;
    }
    FieldReference thisDotField = new FieldReference(v1Name, 0L);
    thisDotField.receiver = new ThisReference(0, 0);
    Expression cond = new EqualExpression(thisDotField, new NullLiteral(0, 0), OperatorIds.EQUAL_EQUAL);
    thisDotField = new FieldReference(v1Name, 0L);
    thisDotField.receiver = new ThisReference(0, 0);
    TypeReference v1Type = new QualifiedTypeReference(JAVA_UTIL_ARRAYLIST, NULL_POSS);
    v1Type = addTypeArgs(1, false, builderType, v1Type, data.getTypeArgs());
    AllocationExpression constructArrayList = new AllocationExpression();
    constructArrayList.type = v1Type;
    Assignment initV1 = new Assignment(thisDotField, constructArrayList, 0);
    Statement thenPart;
    if (mapMode) {
        thisDotField = new FieldReference(v2Name, 0L);
        thisDotField.receiver = new ThisReference(0, 0);
        TypeReference v2Type = new QualifiedTypeReference(JAVA_UTIL_ARRAYLIST, NULL_POSS);
        List<TypeReference> tArgs = data.getTypeArgs();
        if (tArgs != null && tArgs.size() > 1)
            tArgs = Collections.singletonList(tArgs.get(1));
        else
            tArgs = Collections.emptyList();
        v2Type = addTypeArgs(1, false, builderType, v2Type, tArgs);
        constructArrayList = new AllocationExpression();
        constructArrayList.type = v2Type;
        Assignment initV2 = new Assignment(thisDotField, constructArrayList, 0);
        Block b = new Block(0);
        b.statements = new Statement[] { initV1, initV2 };
        thenPart = b;
    } else {
        thenPart = initV1;
    }
    return new IfStatement(cond, thenPart, 0, 0);
}