| Interface | Description | 
|---|---|
| ExpressionTransformer | 
 Provides a way to transform expressions 
 | 
| Class | Description | 
|---|---|
| AnnotationConstantExpression | 
 Represents an annotation "constant" that may appear in annotation attributes
 (mainly used as a marker). 
 | 
| ArgumentListExpression | 
 Represents one or more arguments being passed into a method 
 | 
| ArrayExpression | 
 Represents an array object construction either using a fixed size
 or an initializer expression 
 | 
| AttributeExpression | 
 Represents an attribute access (accessing the field of a class) such as the expression "foo. 
 | 
| BinaryExpression | 
 Represents two expressions and an operation 
 | 
| BitwiseNegationExpression | |
| BooleanExpression | 
 Represents a boolean expression 
 | 
| CastExpression | 
 Represents a type cast expression 
 | 
| ClassExpression | 
 Represents access to a Java/Groovy class in an expression, such
 as when invoking a static method or accessing a static type 
 | 
| ClosureExpression | 
 Represents a closure expression such as { statement }
 or { i -> statement } or { i, x, String y ->  statement } 
 | 
| ClosureListExpression | 
 This class represents a list of expressions used to
 create closures. 
 | 
| ConstantExpression | 
 Represents a constant expression such as null, true, false 
 | 
| ConstructorCallExpression | 
 A constructor call 
 | 
| DeclarationExpression | 
 Represents one or more local variables. 
 | 
| ElvisOperatorExpression | 
 Represents a short ternary expression x ? 
 | 
| EmptyExpression | 
 This class is a place holder for an empty expression. 
 | 
| Expression | 
 Represents a base class for expressions which evaluate as an object 
 | 
| FieldExpression | 
 Represents a field access such as the expression "this.foo". 
 | 
| GStringExpression | 
 Represents a String expression which contains embedded values inside
 it such as "hello there ${user} how are you" which is expanded lazily 
 | 
| ListExpression | 
 Represents a list expression [1, 2, 3] which creates a mutable List 
 | 
| MapEntryExpression | 
 Represents an entry inside a map expression such as 1 : 2. 
 | 
| MapExpression | 
 Represents a map expression [1 : 2, "a" : "b", x : y] which creates a mutable Map 
 | 
| MethodCallExpression | 
 A method call on an object or class 
 | 
| MethodPointerExpression | 
 Represents a method pointer on an object such as
 foo. 
 | 
| NamedArgumentListExpression | 
 Represents one or more arguments being passed into a method by name 
 | 
| NotExpression | |
| PostfixExpression | 
 Represents a postfix expression like foo++ or bar++ 
 | 
| PrefixExpression | 
 Represents a prefix expression like ++foo or --bar 
 | 
| PropertyExpression | 
 Represents a property access such as the expression "foo.bar". 
 | 
| RangeExpression | 
 Represents a range expression such as for iterating. 
 | 
| SpreadExpression | 
 Represents a spread expression *x in the list expression [1, *x, 2]. 
 | 
| SpreadMapExpression | 
 Represents a spread map expression *:m
 in the map expression [1, *:m, 2, "c":100]
 or in the method invoke expression func(1, *:m, 2, "c":100). 
 | 
| StaticMethodCallExpression | 
 A static method call on a class 
 | 
| TernaryExpression | 
 Represents a ternary expression (booleanExpression) ? 
 | 
| TupleExpression | 
 Represents a tuple expression {1, 2, 3} which creates an immutable List 
 | 
| UnaryMinusExpression | |
| UnaryPlusExpression | |
| VariableExpression | 
 Represents a local variable name, the simplest form of expression. e.g. 
 | 
AST nodes for Groovy expressions