CREXX Physical Architecture - Phase 1 (Bootstrap) Level C (Classic REXX)

Stage 1 - Lexer (C / RE2C)

Simple Tokens

Simple / Stateless Tokens:

• TK_EOS Added as the last token in the stream

Complex Tokens

Complex / Stateful Tokens:

Stage 2 - Parser (C / Lemon)

Stage 3 - AST Fixup (C)