Java DeclarationExpression类代码示例

import org.codehaus.groovy.ast.expr.DeclarationExpression; //导入依赖的package包/类
private void changeBaseScriptTypeFromDeclaration(final SourceUnit source, final DeclarationExpression de, final AnnotationNode node) {
    if (de.isMultipleAssignmentDeclaration()) {
        addError("Annotation " + MY_TYPE_NAME + " not supported with multiple assignment notation.", de);
        return;
    }

    if (!(de.getRightExpression() instanceof EmptyExpression)) {
        addError("Annotation " + MY_TYPE_NAME + " not supported with variable assignment.", de);
        return;
    }
    Expression value = node.getMember("value");
    if (value != null) {
        addError("Annotation " + MY_TYPE_NAME + " cannot have member 'value' if used on a declaration.", value);
        return;
    }

    ClassNode cNode = de.getDeclaringClass();
    ClassNode baseScriptType = de.getVariableExpression().getType().getPlainNodeReference();
    de.setRightExpression(new VariableExpression("this"));

    changeBaseScriptType(source, de, cNode, baseScriptType, node);
}
 

import org.codehaus.groovy.ast.expr.DeclarationExpression; //导入依赖的package包/类
@Test
public void transformationOfAnnotationOnLocalVariable() {
	ClassNode classNode = new ClassNode("Test", 0, new ClassNode(Object.class));
	this.moduleNode.addClass(classNode);

	DeclarationExpression declarationExpression = new DeclarationExpression(
			new VariableExpression("test"), null, new ConstantExpression("test"));
	declarationExpression.addAnnotation(this.grabAnnotation);

	BlockStatement code = new BlockStatement(
			Arrays.asList((Statement) new ExpressionStatement(declarationExpression)),
			new VariableScope());

	MethodNode methodNode = new MethodNode("test", 0, new ClassNode(Void.class),
			new Parameter[0], new ClassNode[0], code);

	classNode.addMethod(methodNode);

	assertGrabAnnotationHasBeenTransformed();
}
 

import org.codehaus.groovy.ast.expr.DeclarationExpression; //导入依赖的package包/类
private ExpressionStatement makeVariableDeclarationFinal(ExpressionStatement variableDeclaration) {
    if (!asBoolean(variableDeclaration)) {
        return variableDeclaration;
    }

    if (!(variableDeclaration.getExpression() instanceof DeclarationExpression)) {
        throw new IllegalArgumentException("variableDeclaration is not a declaration statement");
    }

    DeclarationExpression declarationExpression = (DeclarationExpression) variableDeclaration.getExpression();
    if (!(declarationExpression.getLeftExpression() instanceof VariableExpression)) {
        throw astBuilder.createParsingFailedException("The expression statement is not a variable delcaration statement", variableDeclaration);
    }

    VariableExpression variableExpression = (VariableExpression) declarationExpression.getLeftExpression();
    variableExpression.setModifiers(variableExpression.getModifiers() | Opcodes.ACC_FINAL);

    return variableDeclaration;
}
 

import org.codehaus.groovy.ast.expr.DeclarationExpression; //导入依赖的package包/类
@Override
public DeclarationExpression visitVariableDeclarator(VariableDeclaratorContext ctx) {
    ClassNode variableType = ctx.getNodeMetaData(VARIABLE_DECLARATION_VARIABLE_TYPE);
    Objects.requireNonNull(variableType, "variableType should not be null");

    org.codehaus.groovy.syntax.Token token;
    if (asBoolean(ctx.ASSIGN())) {
        token = createGroovyTokenByType(ctx.ASSIGN().getSymbol(), Types.ASSIGN);
    } else {
        token = new org.codehaus.groovy.syntax.Token(Types.ASSIGN, ASSIGN_STR, ctx.start.getLine(), 1);
    }

    return configureAST(
            new DeclarationExpression(
                    configureAST(
                            new VariableExpression(
                                    this.visitVariableDeclaratorId(ctx.variableDeclaratorId()).getName(),
                                    variableType
                            ),
                            ctx.variableDeclaratorId()),
                    token,
                    this.visitVariableInitializer(ctx.variableInitializer())),
            ctx);
}
 

import org.codehaus.groovy.ast.expr.DeclarationExpression; //导入依赖的package包/类
public Expression transform(Expression exp) {
    if (exp == null) return null;
    Expression ret = null;
    if (exp instanceof VariableExpression) {
        ret = transformVariableExpression((VariableExpression) exp);
    } else if (exp.getClass() == PropertyExpression.class) {
        ret = transformPropertyExpression((PropertyExpression) exp);
    } else if (exp instanceof DeclarationExpression) {
        ret = transformDeclarationExpression((DeclarationExpression) exp);
    } else if (exp instanceof BinaryExpression) {
        ret = transformBinaryExpression((BinaryExpression) exp);
    } else if (exp instanceof MethodCallExpression) {
        ret = transformMethodCallExpression((MethodCallExpression) exp);
    } else if (exp instanceof ClosureExpression) {
        ret = transformClosureExpression((ClosureExpression) exp);
    } else if (exp instanceof ConstructorCallExpression) {
        ret = transformConstructorCallExpression((ConstructorCallExpression) exp);
    } else if (exp instanceof AnnotationConstantExpression) {
        ret = transformAnnotationConstantExpression((AnnotationConstantExpression) exp);
    } else {
        resolveOrFail(exp.getType(), exp);
        ret = exp.transformExpression(this);
    }
    if (ret!=null && ret!=exp) ret.setSourcePosition(exp);
    return ret;
}
 

import org.codehaus.groovy.ast.expr.DeclarationExpression; //导入依赖的package包/类
protected Expression transformDeclarationExpression(DeclarationExpression de) {
    visitAnnotations(de);
    Expression oldLeft = de.getLeftExpression();
    checkingVariableTypeInDeclaration = true;
    Expression left = transform(oldLeft);
    checkingVariableTypeInDeclaration = false;
    if (left instanceof ClassExpression) {
        ClassExpression ce = (ClassExpression) left;
        addError("you tried to assign a value to the class " + ce.getType().getName(), oldLeft);
        return de;
    }
    Expression right = transform(de.getRightExpression());
    if (right == de.getRightExpression()) {
        fixDeclaringClass(de);
        return de;
    }
    DeclarationExpression newDeclExpr = new DeclarationExpression(left, de.getOperation(), right);
    newDeclExpr.setDeclaringClass(de.getDeclaringClass());
    fixDeclaringClass(newDeclExpr);
    newDeclExpr.setSourcePosition(de);
    newDeclExpr.addAnnotations(de.getAnnotations());
    return newDeclExpr;
}
 

import org.codehaus.groovy.ast.expr.DeclarationExpression; //导入依赖的package包/类
private void setScriptURIOnDeclaration(final DeclarationExpression de, final AnnotationNode node) {
    if (de.isMultipleAssignmentDeclaration()) {
        addError("Annotation " + MY_TYPE_NAME + " not supported with multiple assignment notation.", de);
        return;
    }

    if (!(de.getRightExpression() instanceof EmptyExpression)) {
        addError("Annotation " + MY_TYPE_NAME + " not supported with variable assignment.", de);
        return;
    }

    URI uri = getSourceURI(node);

    if (uri == null) {
        addError("Unable to get the URI for the source of this script!", de);
    } else {
        // Set the RHS to '= URI.create("string for this URI")'.
        // That may throw an IllegalArgumentExpression wrapping the URISyntaxException.
        de.setRightExpression(getExpression(uri));
    }
}
 

import org.codehaus.groovy.ast.expr.DeclarationExpression; //导入依赖的package包/类
private void changeBaseScriptTypeFromDeclaration(final DeclarationExpression de, final AnnotationNode node) {
    if (de.isMultipleAssignmentDeclaration()) {
        addError("Annotation " + MY_TYPE_NAME + " not supported with multiple assignment notation.", de);
        return;
    }

    if (!(de.getRightExpression() instanceof EmptyExpression)) {
        addError("Annotation " + MY_TYPE_NAME + " not supported with variable assignment.", de);
        return;
    }
    Expression value = node.getMember("value");
    if (value != null) {
        addError("Annotation " + MY_TYPE_NAME + " cannot have member 'value' if used on a declaration.", value);
        return;
    }

    ClassNode cNode = de.getDeclaringClass();
    ClassNode baseScriptType = de.getVariableExpression().getType().getPlainNodeReference();
    de.setRightExpression(new VariableExpression("this"));

    changeBaseScriptType(de, cNode, baseScriptType);
}
 

import org.codehaus.groovy.ast.expr.DeclarationExpression; //导入依赖的package包/类
private static DeclarationExpression optimizeConstantInitialization(
        final BinaryExpression originalDeclaration,
        final Token operation,
        final ConstantExpression constant,
        final Expression leftExpression,
        final ClassNode declarationType) {
    ConstantExpression cexp = new ConstantExpression(
            convertConstant((Number) constant.getValue(), ClassHelper.getWrapper(declarationType)), true);
    cexp.setType(declarationType);
    cexp.setSourcePosition(constant);
    DeclarationExpression result = new DeclarationExpression(
            leftExpression,
            operation,
            cexp
    );
    result.setSourcePosition(originalDeclaration);
    result.copyNodeMetaData(originalDeclaration);
    return result;
}
 

import org.codehaus.groovy.ast.expr.DeclarationExpression; //导入依赖的package包/类
public void visit(ASTNode[] nodes, SourceUnit source) {
    this.source = source;
    if (nodes.length != 2 || !(nodes[0] instanceof AnnotationNode) || !(nodes[1] instanceof AnnotatedNode)) {
        internalError("Expecting [AnnotationNode, AnnotatedClass] but got: " + Arrays.asList(nodes));
    }

    AnnotatedNode parent = (AnnotatedNode) nodes[1];
    AnnotationNode node = (AnnotationNode) nodes[0];
    if (!MY_TYPE.equals(node.getClassNode())) {
        internalError("Transformation called from wrong annotation: " + node.getClassNode().getName());
    }

    boolean autoFlag = determineAutoFlag(node.getMember("auto"));
    Expression value = node.getMember("value");

    if (parent instanceof ClassNode) {
        newifyClass((ClassNode) parent, autoFlag, determineClasses(value, false));
    } else if (parent instanceof MethodNode || parent instanceof FieldNode) {
        newifyMethodOrField(parent, autoFlag, determineClasses(value, false));
    } else if (parent instanceof DeclarationExpression) {
        newifyDeclaration((DeclarationExpression) parent, autoFlag, determineClasses(value, true));
    }
}
 

import org.codehaus.groovy.ast.expr.DeclarationExpression; //导入依赖的package包/类
@Override
public void visitDeclarationExpression(DeclarationExpression expression) {
    super.visitDeclarationExpression(expression);
    if (expression.isMultipleAssignmentDeclaration()) return;
    checkInvalidDeclarationModifier(expression, ACC_ABSTRACT, "abstract");
    checkInvalidDeclarationModifier(expression, ACC_NATIVE, "native");
    checkInvalidDeclarationModifier(expression, ACC_PRIVATE, "private");
    checkInvalidDeclarationModifier(expression, ACC_PROTECTED, "protected");
    checkInvalidDeclarationModifier(expression, ACC_PUBLIC, "public");
    checkInvalidDeclarationModifier(expression, ACC_STATIC, "static");
    checkInvalidDeclarationModifier(expression, ACC_STRICT, "strictfp");
    checkInvalidDeclarationModifier(expression, ACC_SYNCHRONIZED, "synchronized");
    checkInvalidDeclarationModifier(expression, ACC_TRANSIENT, "transient");
    checkInvalidDeclarationModifier(expression, ACC_VOLATILE, "volatile");
    if (expression.getVariableExpression().getOriginType().equals(VOID_TYPE)) {
        addError("The variable '" + expression.getVariableExpression().getName() + "' has invalid type void", expression);
    }
}
 

import org.codehaus.groovy.ast.expr.DeclarationExpression; //导入依赖的package包/类
@Override
public void visitBinaryExpression(final BinaryExpression expression) {
    boolean assignment = StaticTypeCheckingSupport.isAssignment(expression.getOperation().getType());
    boolean isDeclaration = expression instanceof DeclarationExpression;
    Expression leftExpression = expression.getLeftExpression();
    Expression rightExpression = expression.getRightExpression();
    if (isDeclaration) {
        recordFinalVars(leftExpression);
    }
    // visit RHS first for expressions like a = b = 0
    inAssignment = assignment;
    rightExpression.visit(this);
    inAssignment = false;
    leftExpression.visit(this);
    if (assignment) {
        recordAssignments(expression, isDeclaration, leftExpression, rightExpression);
    }
}
 

import org.codehaus.groovy.ast.expr.DeclarationExpression; //导入依赖的package包/类
@Override
public void visitDeclarationExpression(DeclarationExpression expression) {
    Expression right = expression.getRightExpression();
    right.visit(this);

    ClassNode leftType = typeChooser.resolveType(expression.getLeftExpression(), node);
    Expression rightExpression = expression.getRightExpression();
    ClassNode rightType = optimizeDivWithIntOrLongTarget(rightExpression, leftType);
    if (rightType==null) rightType = typeChooser.resolveType(expression.getRightExpression(), node);
    if (isPrimitiveType(leftType) && isPrimitiveType(rightType)) {
        // if right is a constant, then we optimize only if it makes
        // a block complete, so we set a maybe
        if (right instanceof ConstantExpression) {
            opt.chainCanOptimize(true);
        } else {
            opt.chainShouldOptimize(true);
        }
        StatementMeta meta = addMeta(expression);
        ClassNode declarationType = typeChooser.resolveType(expression, node);
        meta.type = declarationType!=null?declarationType:leftType;
        opt.chainInvolvedType(leftType);
        opt.chainInvolvedType(rightType);
    }
}
 

import org.codehaus.groovy.ast.expr.DeclarationExpression; //导入依赖的package包/类
public void visit(ASTNode[] nodes, SourceUnit source) {
    init(nodes, source);
    AnnotatedNode parent = (AnnotatedNode) nodes[1];
    AnnotationNode node = (AnnotationNode) nodes[0];
    if (!MY_TYPE.equals(node.getClassNode())) return;

    if (parent instanceof DeclarationExpression) {
        changeBaseScriptTypeFromDeclaration(source, (DeclarationExpression) parent, node);
    } else if (parent instanceof ImportNode || parent instanceof PackageNode) {
        changeBaseScriptTypeFromPackageOrImport(source, parent, node);
    } else if (parent instanceof ClassNode) {
        changeBaseScriptTypeFromClass(source, (ClassNode) parent, node);
    }
}
 

import org.codehaus.groovy.ast.expr.DeclarationExpression; //导入依赖的package包/类
protected void completeFutureByResults(CompletableFuture<EGradleBuildscriptResult> future, List<ASTNode> result) {
	for (ASTNode node : result) {
		BlockStatement bs = (BlockStatement) node;
		for (org.codehaus.groovy.ast.stmt.Statement st : bs.getStatements()) {
			if (st instanceof ReturnStatement) {
				ReturnStatement rs = (ReturnStatement) st;
				Expression expression = rs.getExpression();
				if (expression instanceof DeclarationExpression) {
					DeclarationExpression de = (DeclarationExpression) expression;
					String name = de.getVariableExpression().getName();
					if (! "buildscript".equals(name)){
						continue;
					}
					Expression right = de.getRightExpression();
					if (right instanceof ClosureExpression) {
						ClosureExpression ce = (ClosureExpression) right;
						Statement buildCode = ce.getCode();
						
						future.complete(new EGradleBuildscriptResult(buildCode));
						return;
					}else{
						future.complete(new EGradleBuildscriptResult(new EGradleBuildScriptException("Did not found expected buildscript closure ,but:"+right)));
						return;
					}
				}
			}
		}
	}
}