MORPH
SIGN IN SIGN UP
kanaka / mal UNCLAIMED

mal - Make a Lisp

0 0 0 Assembly
Normal View History Raw
Current state of mal for Clojure West lighting talk.
2014-03-24 16:32:24 -05:00
import sys, traceback
import mal_readline
All: split types into types, env, printer, core. - types: low-level mapping to the implementation language. - core: functions on types that are exposed directly to mal. - printer: implementation called by pr-str, str, prn, println. - env: the environment implementation - Also, unindent all TCO while loops so that the diff of step4 and step5 are minimized.
2014-04-02 22:23:37 -05:00
import mal_types as types
import reader, printer
from env import Env
import core
Current state of mal for Clojure West lighting talk.
2014-03-24 16:32:24 -05:00
# read
vbs: Merge branch 'kanaka:master' into master
2024-08-09 19:12:09 +08:00
READ = reader.read_str
Current state of mal for Clojure West lighting talk.
2014-03-24 16:32:24 -05:00
# eval
Merge eval-ast and macro expansion into EVAL, add DEBUG-EVAL See issue #587. * Merge eval-ast and eval into a single conditional. * Expand macros during the apply phase, removing lots of duplicate tests, and increasing the overall consistency by allowing the macro to be computed instead of referenced by name (`((defmacro! cond (...)))` is currently illegal for example). * Print "EVAL: $ast" at the top of EVAL if DEBUG-EVAL exists in the MAL environment. * Remove macroexpand and quasiquoteexpand special forms. * Use pattern-matching style in process/step*.txt. Unresolved issues: c.2: unable to reproduce with gcc 11.12.0. elm: the directory is unchanged. groovy: sometimes fail, but not on each rebuild. nasm: fails some new soft tests, but the issue is unreproducible when running the interpreter manually. objpascal: unreproducible with fpc 3.2.2. ocaml: unreproducible with 4.11.1. perl6: unreproducible with rakudo 2021.09. Unrelated changes: Reduce diff betweens steps. Prevent defmacro! from mutating functions: c forth logo miniMAL vb. dart: fix recent errors and warnings ocaml: remove metadata from symbols. Improve the logo implementation. Encapsulate all representation in types.lg and env.lg, unwrap numbers. Replace some manual iterations with logo control structures. Reduce the diff between steps. Use native iteration in env_get and env_map Rewrite the reader with less temporary strings. Reduce the number of temporary lists (for example, reverse iteration with butlast requires O(n^2) allocations). It seems possible to remove a few exceptions: GC settings (Dockerfile), NO_SELF_HOSTING (IMPLS.yml) and step5_EXCLUDES (Makefile.impls) .
2022-01-10 00:15:40 +01:00
def EVAL(ast, env):
while True:
vbs: Merge branch 'kanaka:master' into master
2024-08-09 19:12:09 +08:00
dbgeval = env.get(types._symbol('DEBUG-EVAL'), return_nil=True)
Merge eval-ast and macro expansion into EVAL, add DEBUG-EVAL See issue #587. * Merge eval-ast and eval into a single conditional. * Expand macros during the apply phase, removing lots of duplicate tests, and increasing the overall consistency by allowing the macro to be computed instead of referenced by name (`((defmacro! cond (...)))` is currently illegal for example). * Print "EVAL: $ast" at the top of EVAL if DEBUG-EVAL exists in the MAL environment. * Remove macroexpand and quasiquoteexpand special forms. * Use pattern-matching style in process/step*.txt. Unresolved issues: c.2: unable to reproduce with gcc 11.12.0. elm: the directory is unchanged. groovy: sometimes fail, but not on each rebuild. nasm: fails some new soft tests, but the issue is unreproducible when running the interpreter manually. objpascal: unreproducible with fpc 3.2.2. ocaml: unreproducible with 4.11.1. perl6: unreproducible with rakudo 2021.09. Unrelated changes: Reduce diff betweens steps. Prevent defmacro! from mutating functions: c forth logo miniMAL vb. dart: fix recent errors and warnings ocaml: remove metadata from symbols. Improve the logo implementation. Encapsulate all representation in types.lg and env.lg, unwrap numbers. Replace some manual iterations with logo control structures. Reduce the diff between steps. Use native iteration in env_get and env_map Rewrite the reader with less temporary strings. Reduce the number of temporary lists (for example, reverse iteration with butlast requires O(n^2) allocations). It seems possible to remove a few exceptions: GC settings (Dockerfile), NO_SELF_HOSTING (IMPLS.yml) and step5_EXCLUDES (Makefile.impls) .
2022-01-10 00:15:40 +01:00
if dbgeval is not None and dbgeval is not False:
print('EVAL: ' + printer._pr_str(ast))
All: split types into types, env, printer, core. - types: low-level mapping to the implementation language. - core: functions on types that are exposed directly to mal. - printer: implementation called by pr-str, str, prn, println. - env: the environment implementation - Also, unindent all TCO while loops so that the diff of step4 and step5 are minimized.
2014-04-02 22:23:37 -05:00
if types._symbol_Q(ast):
Current state of mal for Clojure West lighting talk.
2014-03-24 16:32:24 -05:00
return env.get(ast)
All: split types into types, env, printer, core. - types: low-level mapping to the implementation language. - core: functions on types that are exposed directly to mal. - printer: implementation called by pr-str, str, prn, println. - env: the environment implementation - Also, unindent all TCO while loops so that the diff of step4 and step5 are minimized.
2014-04-02 22:23:37 -05:00
elif types._vector_Q(ast):
vbs: Merge branch 'kanaka:master' into master
2024-08-09 19:12:09 +08:00
return types.Vector(EVAL(a, env) for a in ast)
All: split types into types, env, printer, core. - types: low-level mapping to the implementation language. - core: functions on types that are exposed directly to mal. - printer: implementation called by pr-str, str, prn, println. - env: the environment implementation - Also, unindent all TCO while loops so that the diff of step4 and step5 are minimized.
2014-04-02 22:23:37 -05:00
elif types._hash_map_Q(ast):
Stop evaluating map keys Neither keywords nor strings are modified by evaluation, so evaluating map keys is a no-op. Document this in the guide.
2021-08-21 19:08:17 +02:00
return types.Hash_Map((k, EVAL(v, env)) for k, v in ast.items())
Merge eval-ast and macro expansion into EVAL, add DEBUG-EVAL See issue #587. * Merge eval-ast and eval into a single conditional. * Expand macros during the apply phase, removing lots of duplicate tests, and increasing the overall consistency by allowing the macro to be computed instead of referenced by name (`((defmacro! cond (...)))` is currently illegal for example). * Print "EVAL: $ast" at the top of EVAL if DEBUG-EVAL exists in the MAL environment. * Remove macroexpand and quasiquoteexpand special forms. * Use pattern-matching style in process/step*.txt. Unresolved issues: c.2: unable to reproduce with gcc 11.12.0. elm: the directory is unchanged. groovy: sometimes fail, but not on each rebuild. nasm: fails some new soft tests, but the issue is unreproducible when running the interpreter manually. objpascal: unreproducible with fpc 3.2.2. ocaml: unreproducible with 4.11.1. perl6: unreproducible with rakudo 2021.09. Unrelated changes: Reduce diff betweens steps. Prevent defmacro! from mutating functions: c forth logo miniMAL vb. dart: fix recent errors and warnings ocaml: remove metadata from symbols. Improve the logo implementation. Encapsulate all representation in types.lg and env.lg, unwrap numbers. Replace some manual iterations with logo control structures. Reduce the diff between steps. Use native iteration in env_get and env_map Rewrite the reader with less temporary strings. Reduce the number of temporary lists (for example, reverse iteration with butlast requires O(n^2) allocations). It seems possible to remove a few exceptions: GC settings (Dockerfile), NO_SELF_HOSTING (IMPLS.yml) and step5_EXCLUDES (Makefile.impls) .
2022-01-10 00:15:40 +01:00
elif not types._list_Q(ast):
Current state of mal for Clojure West lighting talk.
2014-03-24 16:32:24 -05:00
return ast # primitive value, return unchanged
Merge eval-ast and macro expansion into EVAL, add DEBUG-EVAL See issue #587. * Merge eval-ast and eval into a single conditional. * Expand macros during the apply phase, removing lots of duplicate tests, and increasing the overall consistency by allowing the macro to be computed instead of referenced by name (`((defmacro! cond (...)))` is currently illegal for example). * Print "EVAL: $ast" at the top of EVAL if DEBUG-EVAL exists in the MAL environment. * Remove macroexpand and quasiquoteexpand special forms. * Use pattern-matching style in process/step*.txt. Unresolved issues: c.2: unable to reproduce with gcc 11.12.0. elm: the directory is unchanged. groovy: sometimes fail, but not on each rebuild. nasm: fails some new soft tests, but the issue is unreproducible when running the interpreter manually. objpascal: unreproducible with fpc 3.2.2. ocaml: unreproducible with 4.11.1. perl6: unreproducible with rakudo 2021.09. Unrelated changes: Reduce diff betweens steps. Prevent defmacro! from mutating functions: c forth logo miniMAL vb. dart: fix recent errors and warnings ocaml: remove metadata from symbols. Improve the logo implementation. Encapsulate all representation in types.lg and env.lg, unwrap numbers. Replace some manual iterations with logo control structures. Reduce the diff between steps. Use native iteration in env_get and env_map Rewrite the reader with less temporary strings. Reduce the number of temporary lists (for example, reverse iteration with butlast requires O(n^2) allocations). It seems possible to remove a few exceptions: GC settings (Dockerfile), NO_SELF_HOSTING (IMPLS.yml) and step5_EXCLUDES (Makefile.impls) .
2022-01-10 00:15:40 +01:00
else:
All: split types into types, env, printer, core. - types: low-level mapping to the implementation language. - core: functions on types that are exposed directly to mal. - printer: implementation called by pr-str, str, prn, println. - env: the environment implementation - Also, unindent all TCO while loops so that the diff of step4 and step5 are minimized.
2014-04-02 22:23:37 -05:00
Current state of mal for Clojure West lighting talk.
2014-03-24 16:32:24 -05:00
# apply list
if len(ast) == 0: return ast
All: split types into types, env, printer, core. - types: low-level mapping to the implementation language. - core: functions on types that are exposed directly to mal. - printer: implementation called by pr-str, str, prn, println. - env: the environment implementation - Also, unindent all TCO while loops so that the diff of step4 and step5 are minimized.
2014-04-02 22:23:37 -05:00
a0 = ast[0]
vbs: Merge branch 'kanaka:master' into master
2024-08-09 19:12:09 +08:00
if types._symbol_Q(a0):
Current state of mal for Clojure West lighting talk.
2014-03-24 16:32:24 -05:00
if "def!" == a0:
a1, a2 = ast[1], ast[2]
res = EVAL(a2, env)
return env.set(a1, res)
elif "let*" == a0:
a1, a2 = ast[1], ast[2]
let_env = Env(env)
vbs: Merge branch 'kanaka:master' into master
2024-08-09 19:12:09 +08:00
for k, v in types.asPairs(a1):
let_env.set(k, EVAL(v, let_env))
All: TCO let* and quasiquote.
2014-04-23 21:59:50 -05:00
ast = a2
env = let_env
vbs: Merge branch 'kanaka:master' into master
2024-08-09 19:12:09 +08:00
continue # TCO
Current state of mal for Clojure West lighting talk.
2014-03-24 16:32:24 -05:00
elif "do" == a0:
Merge eval-ast and macro expansion into EVAL, add DEBUG-EVAL See issue #587. * Merge eval-ast and eval into a single conditional. * Expand macros during the apply phase, removing lots of duplicate tests, and increasing the overall consistency by allowing the macro to be computed instead of referenced by name (`((defmacro! cond (...)))` is currently illegal for example). * Print "EVAL: $ast" at the top of EVAL if DEBUG-EVAL exists in the MAL environment. * Remove macroexpand and quasiquoteexpand special forms. * Use pattern-matching style in process/step*.txt. Unresolved issues: c.2: unable to reproduce with gcc 11.12.0. elm: the directory is unchanged. groovy: sometimes fail, but not on each rebuild. nasm: fails some new soft tests, but the issue is unreproducible when running the interpreter manually. objpascal: unreproducible with fpc 3.2.2. ocaml: unreproducible with 4.11.1. perl6: unreproducible with rakudo 2021.09. Unrelated changes: Reduce diff betweens steps. Prevent defmacro! from mutating functions: c forth logo miniMAL vb. dart: fix recent errors and warnings ocaml: remove metadata from symbols. Improve the logo implementation. Encapsulate all representation in types.lg and env.lg, unwrap numbers. Replace some manual iterations with logo control structures. Reduce the diff between steps. Use native iteration in env_get and env_map Rewrite the reader with less temporary strings. Reduce the number of temporary lists (for example, reverse iteration with butlast requires O(n^2) allocations). It seems possible to remove a few exceptions: GC settings (Dockerfile), NO_SELF_HOSTING (IMPLS.yml) and step5_EXCLUDES (Makefile.impls) .
2022-01-10 00:15:40 +01:00
for i in range(1, len(ast)-1):
EVAL(ast[i], env)
Current state of mal for Clojure West lighting talk.
2014-03-24 16:32:24 -05:00
ast = ast[-1]
vbs: Merge branch 'kanaka:master' into master
2024-08-09 19:12:09 +08:00
continue # TCO
Current state of mal for Clojure West lighting talk.
2014-03-24 16:32:24 -05:00
elif "if" == a0:
a1, a2 = ast[1], ast[2]
cond = EVAL(a1, env)
if cond is None or cond is False:
vbs: Merge branch 'kanaka:master' into master
2024-08-09 19:12:09 +08:00
if len(ast) > 3:
ast = ast[3]
continue # TCO
else:
return None
Current state of mal for Clojure West lighting talk.
2014-03-24 16:32:24 -05:00
else:
ast = a2
vbs: Merge branch 'kanaka:master' into master
2024-08-09 19:12:09 +08:00
continue # TCO
Current state of mal for Clojure West lighting talk.
2014-03-24 16:32:24 -05:00
elif "fn*" == a0:
a1, a2 = ast[1], ast[2]
vbs: Merge branch 'kanaka:master' into master
2024-08-09 19:12:09 +08:00
def fn(*args):
return EVAL(a2, Env(env, a1, args))
fn.__ast__ = a2
fn.__gen_env__ = lambda args: Env(env, a1, args)
return fn
f = EVAL(a0, env)
if types._function_Q(f):
Merge eval-ast and macro expansion into EVAL, add DEBUG-EVAL See issue #587. * Merge eval-ast and eval into a single conditional. * Expand macros during the apply phase, removing lots of duplicate tests, and increasing the overall consistency by allowing the macro to be computed instead of referenced by name (`((defmacro! cond (...)))` is currently illegal for example). * Print "EVAL: $ast" at the top of EVAL if DEBUG-EVAL exists in the MAL environment. * Remove macroexpand and quasiquoteexpand special forms. * Use pattern-matching style in process/step*.txt. Unresolved issues: c.2: unable to reproduce with gcc 11.12.0. elm: the directory is unchanged. groovy: sometimes fail, but not on each rebuild. nasm: fails some new soft tests, but the issue is unreproducible when running the interpreter manually. objpascal: unreproducible with fpc 3.2.2. ocaml: unreproducible with 4.11.1. perl6: unreproducible with rakudo 2021.09. Unrelated changes: Reduce diff betweens steps. Prevent defmacro! from mutating functions: c forth logo miniMAL vb. dart: fix recent errors and warnings ocaml: remove metadata from symbols. Improve the logo implementation. Encapsulate all representation in types.lg and env.lg, unwrap numbers. Replace some manual iterations with logo control structures. Reduce the diff between steps. Use native iteration in env_get and env_map Rewrite the reader with less temporary strings. Reduce the number of temporary lists (for example, reverse iteration with butlast requires O(n^2) allocations). It seems possible to remove a few exceptions: GC settings (Dockerfile), NO_SELF_HOSTING (IMPLS.yml) and step5_EXCLUDES (Makefile.impls) .
2022-01-10 00:15:40 +01:00
args = ast[1:]
Fix metadata on functions. - Don't use metadata to store ast, env, params data. - In Clojure, store metadata on the :meta key of the real metadata. This also allows using any datatype as metadata.
2014-04-09 23:58:27 -05:00
if hasattr(f, '__ast__'):
ast = f.__ast__
vbs: Merge branch 'kanaka:master' into master
2024-08-09 19:12:09 +08:00
env = f.__gen_env__(EVAL(a, env) for a in args)
continue # TCO
Current state of mal for Clojure West lighting talk.
2014-03-24 16:32:24 -05:00
else:
Merge eval-ast and macro expansion into EVAL, add DEBUG-EVAL See issue #587. * Merge eval-ast and eval into a single conditional. * Expand macros during the apply phase, removing lots of duplicate tests, and increasing the overall consistency by allowing the macro to be computed instead of referenced by name (`((defmacro! cond (...)))` is currently illegal for example). * Print "EVAL: $ast" at the top of EVAL if DEBUG-EVAL exists in the MAL environment. * Remove macroexpand and quasiquoteexpand special forms. * Use pattern-matching style in process/step*.txt. Unresolved issues: c.2: unable to reproduce with gcc 11.12.0. elm: the directory is unchanged. groovy: sometimes fail, but not on each rebuild. nasm: fails some new soft tests, but the issue is unreproducible when running the interpreter manually. objpascal: unreproducible with fpc 3.2.2. ocaml: unreproducible with 4.11.1. perl6: unreproducible with rakudo 2021.09. Unrelated changes: Reduce diff betweens steps. Prevent defmacro! from mutating functions: c forth logo miniMAL vb. dart: fix recent errors and warnings ocaml: remove metadata from symbols. Improve the logo implementation. Encapsulate all representation in types.lg and env.lg, unwrap numbers. Replace some manual iterations with logo control structures. Reduce the diff between steps. Use native iteration in env_get and env_map Rewrite the reader with less temporary strings. Reduce the number of temporary lists (for example, reverse iteration with butlast requires O(n^2) allocations). It seems possible to remove a few exceptions: GC settings (Dockerfile), NO_SELF_HOSTING (IMPLS.yml) and step5_EXCLUDES (Makefile.impls) .
2022-01-10 00:15:40 +01:00
return f(*(EVAL(a, env) for a in args))
vbs: Merge branch 'kanaka:master' into master
2024-08-09 19:12:09 +08:00
else:
raise Exception('Can only apply functions')
Current state of mal for Clojure West lighting talk.
2014-03-24 16:32:24 -05:00
# print
vbs: Merge branch 'kanaka:master' into master
2024-08-09 19:12:09 +08:00
PRINT = printer._pr_str
Current state of mal for Clojure West lighting talk.
2014-03-24 16:32:24 -05:00
# repl
repl_env = Env()
def REP(str):
return PRINT(EVAL(READ(str), repl_env))
All: move some fns to core. Major cleanup. - Don't import/require core until step4. - Define cond/or macros from step8
2014-04-16 23:57:50 -05:00
# core.py: defined using python
All: add keywords. Also, fix nth and count to match cloure.
2014-12-18 20:33:49 -06:00
for k, v in core.ns.items(): repl_env.set(types._symbol(k), v)
repl_env.set(types._symbol('eval'), lambda ast: EVAL(ast, repl_env))
vbs: Merge branch 'kanaka:master' into master
2024-08-09 19:12:09 +08:00
repl_env.set(types._symbol('*ARGV*'), types.List(sys.argv[2:]))
Current state of mal for Clojure West lighting talk.
2014-03-24 16:32:24 -05:00
All: move some fns to core. Major cleanup. - Don't import/require core until step4. - Define cond/or macros from step8
2014-04-16 23:57:50 -05:00
# core.mal: defined using the language itself
Current state of mal for Clojure West lighting talk.
2014-03-24 16:32:24 -05:00
REP("(def! not (fn* (a) (if a false true)))")
vbs: Merge branch 'kanaka:master' into master
2024-08-09 19:12:09 +08:00
REP('(def! load-file (fn* (f) (eval (read-string (str "(do " (slurp f) "\nnil)")))))')
Current state of mal for Clojure West lighting talk.
2014-03-24 16:32:24 -05:00
if len(sys.argv) >= 2:
REP('(load-file "' + sys.argv[1] + '")')
All: *ARGV* and *host-language*. Misc syncing/fixes.
2014-04-19 13:04:09 -05:00
sys.exit(0)
# repl loop
while True:
try:
line = mal_readline.readline("user> ")
print(REP(line))
vbs: Merge branch 'kanaka:master' into master
2024-08-09 19:12:09 +08:00
except EOFError:
print()
break
All: *ARGV* and *host-language*. Misc syncing/fixes.
2014-04-19 13:04:09 -05:00
except reader.Blank: continue
vbs: Merge branch 'kanaka:master' into master
2024-08-09 19:12:09 +08:00
except Exception:
# See tests/step5_tco.mal in this directory.
print("".join(traceback.format_exception(*sys.exc_info())[0:100]))
Reference in New Issue Copy Permalink