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Copy pathgenerate_select.py
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65 lines (48 loc) · 1.81 KB
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import os
from itertools import product
from pathlib import Path
from typing import List, Tuple
import black
from jinja2 import Template
from pydantic import BaseModel
template_path = (
Path(__file__).parent.parent / "sqlmodel/sql/_expression_select_gen.py.jinja2"
)
destiny_path = Path(__file__).parent.parent / "sqlmodel/sql/_expression_select_gen.py"
number_of_types = 4
class Arg(BaseModel):
name: str
annotation: str
arg_groups: List[Arg] = []
signatures: List[Tuple[List[Arg], List[str]]] = []
for total_args in range(2, number_of_types + 1):
arg_types_tuples = product(["model", "scalar"], repeat=total_args)
for arg_type_tuple in arg_types_tuples:
args: List[Arg] = []
return_types: List[str] = []
for i, arg_type in enumerate(arg_type_tuple):
if arg_type == "scalar":
t_var = f"_TScalar_{i}"
arg = Arg(name=f"entity_{i}", annotation=t_var)
ret_type = t_var
else:
t_type = f"_T{i}"
t_var = f"_TCCA[{t_type}]"
arg = Arg(name=f"__ent{i}", annotation=t_var)
ret_type = t_type
args.append(arg)
return_types.append(ret_type)
signatures.append((args, return_types))
template: Template = Template(template_path.read_text())
result = template.render(number_of_types=number_of_types, signatures=signatures)
result = (
"# WARNING: do not modify this code, it is generated by "
"_expression_select_gen.py.jinja2\n\n" + result
)
result = black.format_str(result, mode=black.Mode())
current_content = destiny_path.read_text()
if current_content != result and os.getenv("CHECK_JINJA"):
raise RuntimeError(
"sqlmodel/sql/expression.py content not update with Jinja2 template"
)
destiny_path.write_text(result)