Wiki Index — Interpreters: PLAI, Tolk, Advprog

Navigation: Start here → Overview (cluster map) → hub concept → member pages → syntheses.

Cluster: interpreter-architecture

Hub: Interpreter Architecture — The parse→interpret pipeline and AST design

Page	Summary
Abstract Syntax Tree	AST representation; CLOS in tolk
Parsing	s-expressions, read, the PLAI parser
Interpreter	Recursive evaluation over AST
Semantics	Meaning of language constructs

Syntheses: (none yet)

Hub: Tolk — The Common Lisp interpreter library for advprog

Page	Summary
Tolk Arith	Arithmetic interpreter in tolk
Tolk Python Language	Python fragment covered by parser
Tolk Python AST	AST class hierarchy for Python
Defmethod-bind	CLOS methods with slot binding
Tolk Repo	The tolk git repository

Reference pages for the Common Lisp libraries used in tolk. Each page covers only the functionality used in tolk.

Page	Summary
Trivia	Pattern matching; `match` / `ematch`
Fare-quasiquote	Quasiquote patterns for trivia
Named-readtables	Activates the fare-quasiquote readtable
Metabang-bind	Unified slot / value binding
Closer-mop	MOP introspection; enables `defmethod-bind`
FiveAM	Unit testing; `test`, `is`, `eqo`

Hub: PLAI — Programming Languages: Application and Interpretation

Page	Summary
PLAI Ch.1 Summary	Introduction, philosophy, plai-typed language
PLAI Ch.2 Summary	Parsing, s-expressions, ArithC
PLAI Ch.3 Summary	First interpreter, ArithC interp

Hub: Advprog — The Advanced Programming course

Page	Summary
Advprog 2026-04-20	Intro to Interpreters class
Advprog 2026-04-23	Code Transformation class