org.springframework.expression.spel.ast
Classes 
Assign
AstUtils
BeanReference
BooleanLiteral
CompoundExpression
ConstructorReference
Elvis
FormatHelper
FunctionReference
Identifier
Indexer
InlineList
IntLiteral
Literal
LongLiteral
MethodReference
NullLiteral
OpAnd
OpDivide
OpEQ
Operator
OperatorBetween
OperatorInstanceof
OperatorMatches
OperatorNot
OperatorPower
OpGE
OpGT
OpLE
OpLT
OpMinus
OpModulus
OpMultiply
OpNE
OpOr
OpPlus
Projection
PropertyOrFieldReference
QualifiedIdentifier
RealLiteral
Selection
SpelNodeImpl
StringLiteral
Ternary
TypeReference
VariableReference
Enums 
TypeCode