ArgumentPairExpression represents a key/value pair in method parameters or arguments.

ArrayExpression defines the array expression literal which contains the node expression and its value.

AssignExpression represents a variable assignment.

BaseNode holds the attribute every expression or statement should have.

BlockStatement represents a block.

BooleanExpression defines the boolean expression literal which contains the node expression and its value.

BreakStatement represents "break" keyword.

CallExpression represents a call.

ClassStatement represents a class statement.

ConditionalExpression represents if or elsif expression.

Constant represents a constant.

ContinueStatement represents "continue" keyword.

DefStatement represents a def.

ExpressionStatement represents an expression in statement form.

FloatLiteral contains the node expression and its value.

GetBlockExpression represents `block` call in the AST.

HasBlockExpression represents `block` call in the AST.

HashExpression defines the hash expression literal which contains the node expression and its value.

Identifier represents an identifier.

IfExpression represents an if statement.

InfixExpression represents a binary operator.

InstanceVariable represents an instance variable.

IntegerLiteral contains the node expression and its value.

ModuleStatement represents module node in AST.

MultiVariableExpression is not really an expression, it's just a container that holds multiple Variables.

NilExpression represents nil node.

PrefixExpression struct to represent a prefix operator.

Program is the root node of entire AST.

RangeExpression defines the range expression literal which contains the node expression and its start/end value.

ReturnStatement represents a return statement.

SelfExpression represents a reference to the object.

StringLiteral contains the node expression and its value.

WhileStatement represents a while statement.

YieldExpression represents a yield.

Expression is the AST node for an expression.

Statement is the AST node for a statement.

Variable interface represents assignable nodes, currently these are Identifier, InstanceVariable and Constant.