Parrot Opcode Syntax Tree (POST)

The abstract syntax tree is the desugared form of the Perl 6 code

The opcode syntax tree is the abstracted form of the underlying machine representation (Parrot opcodes)

Current Perl6::POST node types (definitely changing):

• Node - base class for POST nodes
• Val - Constant values
• Var - variables
• Sub - subroutine
• Op - a basic operation
• Ops - a sequence of Ops
• Label - a branch target
• Assign - assign a value to a variable