The parser generator I used: PARSEGEN.
And the grammar it reads: GRAMMAR.
The main program of the compiler:
GLOBAL
And its separately-compiled passes:
Pass 5 generates JANUS intermediate code, which is converted to
370 assembler by the following Spitbol/Snobol program:
JANUS
The parse tables read by the compiler before it starts compiling the
Algol 68 source code: