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This commit is contained in:
Michael Zhang 2021-10-01 13:16:51 -05:00
parent b636e86c56
commit cf67e78e9a
Signed by: michael
GPG key ID: BDA47A31A3C8EE6B
10 changed files with 108 additions and 371 deletions
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1
.gitignore vendored
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@ -7,3 +7,4 @@ gen/*
build
dist
*.egg-info
result

2
MANIFEST.in Normal file
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@ -0,0 +1,2 @@
include src/agtest/*.lark
include src/agtest/runtime.tmpl.py

338
Pipfile.lock generated
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@ -1,338 +0,0 @@
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"sha256:c4fdf4019605b6e5423637e01bc9fe4daef873709a7973e195ceba0a62bbc844"
],
"markers": "python_version >= '2.7' and python_version not in '3.0, 3.1, 3.2, 3.3, 3.4' and python_version < '4'",
"version": "==1.26.7"
}
}
}

9
default.nix Normal file
View file

@ -0,0 +1,9 @@
{ buildPythonApplication, nix-gitignore, lark-parser, click }:
buildPythonApplication {
pname = "agtest";
version = "0.1.0";
propagatedBuildInputs = [ lark-parser click ];
src = nix-gitignore.gitignoreSource [] ./.;
}

41
flake.lock Normal file
View file

@ -0,0 +1,41 @@
{
"nodes": {
"flake-utils": {
"locked": {
"lastModified": 1631561581,
"narHash": "sha256-3VQMV5zvxaVLvqqUrNz3iJelLw30mIVSfZmAaauM3dA=",
"owner": "numtide",
"repo": "flake-utils",
"rev": "7e5bf3925f6fbdfaf50a2a7ca0be2879c4261d19",
"type": "github"
},
"original": {
"owner": "numtide",
"repo": "flake-utils",
"type": "github"
}
},
"nixpkgs": {
"locked": {
"lastModified": 1633106717,
"narHash": "sha256-gsUiiFFYelpOrJvPlZ/sJ1ucAM/kLiaqY7xdaA0TMo0=",
"owner": "NixOS",
"repo": "nixpkgs",
"rev": "107a5943bdd61e89a45b40ee81aa51675d1d9bcc",
"type": "github"
},
"original": {
"id": "nixpkgs",
"type": "indirect"
}
},
"root": {
"inputs": {
"flake-utils": "flake-utils",
"nixpkgs": "nixpkgs"
}
}
},
"root": "root",
"version": 7
}

19
flake.nix Normal file
View file

@ -0,0 +1,19 @@
{
description = "A very basic flake";
inputs = {
flake-utils.url = "github:numtide/flake-utils";
};
outputs = { self, nixpkgs, flake-utils }:
flake-utils.lib.eachDefaultSystem (system:
let
pkgs = nixpkgs.legacyPackages.${system};
myPkgs = rec {
agtest = pkgs.python39Packages.callPackage ./. {};
};
in
{
packages = flake-utils.lib.flattenTree myPkgs;
});
}

1
setup.py
View file

@ -3,4 +3,5 @@ from setuptools import setup
setup(
name="agtest",
version="0.1.0",
include_package_data=True,
)

58
src/agtest/driver.py
View file

@ -1,21 +1,26 @@
import lark
import importlib
import json
import os
from io import StringIO
from os import path
from pathlib import Path
import lark
import click
from agtest.ast import Parser
from agtest.gen import GenResult
src_dir = path.dirname(path.realpath(__file__))
print("SOURCE", src_dir)
grammar = path.join(src_dir, "grammar.lark")
p = lark.Lark(open(grammar).read(), start="program", parser="lalr")
def run(path: Path):
with open(path) as f:
data = f.read()
grammar_path = path.join(src_dir, "grammar.lark")
runtime_path = path.join(src_dir, "runtime.tmpl.py")
p = lark.Lark(open(grammar_path).read(), start="program", parser="lalr")
@click.command()
@click.argument("input", type=click.File("r"))
def run(input):
data = input.read()
input.close()
cst = p.parse(data)
@ -25,25 +30,26 @@ def run(path: Path):
res = GenResult(ast)
res.build()
print("Grammar:")
print(res.parser_data)
if not path.exists("gen"):
os.makedirs("gen")
with open("agruntime.tmpl.py", "r") as f:
with open(runtime_path, "r") as f:
fmt_str = f.read()
with open("gen/arith.py", "w") as f:
f.write(
fmt_str.format(
pd=res.parser_data,
ex=res.extra,
starts=list(res.starts),
trans_def=res.trans_def,
ntmap=json.dumps(res.nonterminal_map),
)
s = StringIO()
s.write(
fmt_str.format(
pd=res.parser_data,
ex=res.extra,
starts=list(res.starts),
trans_def=res.trans_def,
ntmap=json.dumps(res.nonterminal_map),
)
)
mod = importlib.import_module("gen.arith")
print(mod.parse("1 + 2 * 3", start="Expr")) # type: ignore
print("Dropping you in a Python shell...")
print("Call parse(str) to parse something.")
import imp
mod = imp.new_module("mod")
exec(s.getvalue(), mod.__dict__)
import code
code.InteractiveConsole(locals=mod.__dict__).interact()

8
src/agtest/gen.py
View file

@ -110,8 +110,6 @@ class GenResult:
raise Exception("duplicate field name")
this_fields[field.name] = field.ty
what_fields[node.name] = this_fields
print("what_ifaces:", what_ifaces)
print("what_fields:", what_fields)
# a high-level dictionary of productions; this has sub-productions that
# should be further expanded at a later step before converting into lark
@ -124,7 +122,6 @@ class GenResult:
env: List[Tuple[str, NodeRef]], expr: Expr
) -> Dict[str, str]:
names = dict(env)
print(f"collect_required_thunks({expr})", expr.__class__)
if isinstance(expr, ExprDot):
return collect_required_thunks(env, expr.left)
elif isinstance(expr, ExprMul):
@ -170,7 +167,7 @@ class GenResult:
)
self.extra += class_decl
print(node_desc.name, node_desc.node.ifaces)
# print(node_desc.name, node_desc.node.ifaces)
for variant in node_desc.node.variants:
v_class_name = gensym(f"{node_desc.nonterminal}_var")
@ -182,12 +179,11 @@ class GenResult:
self.extra += class_decl
prod_name = gensym(node_desc.nonterminal + "_")
print("PRODUCTION", prod_name, variant.prod)
# print("PRODUCTION", prod_name, variant.prod)
# resolving a production just means checking to make sure it's a
# type that exists or it's a regex
def resolve_production(sym: Sym) -> str:
print(f"resolve_production({sym})")
if isinstance(sym, SymRename):
if isinstance(sym.ty, NodeRefByName):
if sym.ty.name in node_map:

2
src/agtest/runtime.tmpl.py
View file

@ -38,7 +38,7 @@ parser = Lark(
class Trans(Transformer[None]):
{transdef}
{trans_def}
__agNonterminals = {ntmap}