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mirror of https://github.com/trezor/trezor-firmware.git synced 2024-12-15 10:58:09 +00:00
trezor-firmware/core/tools/rust_api_check.py
2023-05-31 10:14:54 +02:00

247 lines
8.0 KiB
Python
Executable File

#!/usr/bin/env python3
"""
Compare the mock python API with the real Rust one.
"""
from __future__ import annotations
import re
from pathlib import Path
HERE = Path(__file__).parent
CORE_DIR = HERE.parent
TT_FILE = CORE_DIR / "embed/rust/src/ui/model_tt/layout.rs"
TR_FILE = CORE_DIR / "embed/rust/src/ui/model_tr/layout.rs"
ALL_FILES = [
TT_FILE,
TR_FILE,
]
# These are functions not defined directly in layout.rs
RUST_EXTERNAL_FUNCTIONS = [
"disable_animation",
"jpeg_info",
"jpeg_test",
]
# These functions do not directly proccess upy arguments
RUST_DELEGATING_FUNCTIONS = [
"new_show_success",
"new_show_warning",
"new_show_error",
"new_show_info",
]
def _get_all_functions_with_definitions(file: Path) -> dict[str, str]:
all_functions: dict[str, str] = {}
with open(file, "r") as f:
lines = f.readlines()
func_name: str | None = None
definition_lines: list[str] = []
for line in lines:
# Function name
func_match = re.search(r'^extern "C" fn (\w+)', line)
if func_match:
func_name = func_match.group(1)
continue
if not func_name:
continue
# Saving the line
definition_lines.append(line.rstrip())
# End of definition - save and reset
if line.startswith("}"):
if func_name:
all_functions[func_name] = "\n".join(definition_lines)
func_name = None
definition_lines = []
continue
return all_functions
def _get_all_qstr_code_types(file: Path) -> dict[str, dict[str, str]]:
all_function_defs = _get_all_functions_with_definitions(file)
all_qstr_defs: dict[str, dict[str, str]] = {}
for func_name, func_def in all_function_defs.items():
qstr_defs: dict[str, str] = {}
one_separated_line: list[str] = []
for line in func_def.splitlines():
one_separated_line.append(line.strip())
if not line.endswith(";"):
continue
one_line = "".join(one_separated_line)
one_separated_line = []
qstr_match = re.search(r"MP_QSTR_(\w+)", one_line)
if not qstr_match:
continue
qstr_name = qstr_match.group(1)
rust_match = re.search(r"let (\w+): (.*?) =", one_line)
if not rust_match:
raise ValueError("No Rust type found")
rust_type = rust_match.group(2)
if rust_type == "Obj":
# Cannot get the exact type
upy_type = "Any"
else:
upy_type = rust_type
# There could be a default value
default = None
if "unwrap_or_else" in one_line:
default_match = re.search(r"unwrap_or_else\(\|_?\|\s+(.*?)\)", one_line)
if default_match:
default = default_match.group(1)
else:
raise ValueError("No default value found")
elif "kwargs.get_or(" in one_line:
default_match = re.search(
r"kwargs.get_or\(Qstr::MP_QSTR_\w+, (.*?)\)", one_line
)
if default_match:
default = default_match.group(1)
else:
raise ValueError("No default value found")
option_match = re.match(r"Option<(.*)>", upy_type)
if option_match:
upy_type = option_match.group(1)
upy_type = f"{upy_type} | None"
gc_match = re.match(r"Gc<(.*)>", upy_type)
if gc_match:
upy_type = gc_match.group(1)
upy_type = upy_type.replace("StrBuffer", "str")
upy_type = upy_type.replace("List", "list")
if re.match(r"^[ui]\d+$", upy_type) or upy_type == "usize":
upy_type = "int"
if default:
if "const_none" in default:
default = "None"
elif default in ("true", "false"):
default = default.capitalize()
elif ".into(" in default:
default = default.split(".into(")[0]
elif "StrBuffer::empty" in default:
default = '""'
upy_type += f" = {default}"
qstr_defs[qstr_name] = upy_type
all_qstr_defs[func_name] = qstr_defs
return all_qstr_defs
def _get_all_upy_types(file: Path) -> dict[str, dict[str, str]]:
all_functions: dict[str, dict[str, str]] = {}
with open(file, "r") as f:
lines = f.readlines()
func_name: str | None = None
definition_lines: list[str] = []
for line in lines:
line = line.strip()
# Function name
func_match = re.search(r"^/// def (\w+)\(", line)
if func_match:
func_name = func_match.group(1)
continue
if not func_name:
continue
# Saving the line
definition_lines.append(line)
# End of definition - save and reset
if line.startswith("Qstr::MP_QSTR_"):
if func_name:
if f"new_{func_name}" in line:
func_name = f"new_{func_name}"
def_text = "\n".join(definition_lines)
var_names_and_types = re.findall(r"(\w+): ([^#]*?)[,\n]", def_text)
all_functions[func_name] = {
name: type for name, type in var_names_and_types
}
unused_args: list[str] = []
for def_l in definition_lines:
if "# unused" in def_l:
unused_match = re.search(r"(\w+):", def_l)
if unused_match:
unused_args.append(unused_match.group(1))
all_functions[func_name]["_unused_args"] = unused_args # type: ignore
func_name = None
definition_lines = []
continue
return all_functions
def check_file(file: Path) -> None:
all_rust_types = _get_all_qstr_code_types(file)
all_upy_types = _get_all_upy_types(file)
# Find discrepancies between these types
for func_name, rust_types in all_rust_types.items():
upy_types = all_upy_types.get(func_name)
if upy_types is None:
print(f"Missing upy function {func_name}")
continue
unused_args = upy_types.get("_unused_args", [])
for qstr_name, rust_type in rust_types.items():
upy_type = upy_types.get(qstr_name)
if not upy_type:
print(f"Missing upy argument {qstr_name} in {func_name} ({rust_type})")
continue
if upy_type and qstr_name in unused_args:
print(f"Argument {qstr_name} marked as unused but used in {func_name}")
if rust_type != upy_type:
if rust_type == "Any":
continue
if rust_type == "list" and upy_type.startswith("list"):
continue
print(f"Discrepancy in {func_name} {qstr_name}:")
print(f" Rust: {rust_type}")
print(f" Upy: {upy_type}")
# Find things missing in Rust
for func_name, upy_types in all_upy_types.items():
rust_types = all_rust_types.get(func_name)
if rust_types is None:
if func_name in RUST_EXTERNAL_FUNCTIONS:
continue
print(f"Missing Rust function {func_name}")
continue
unused_args = upy_types.get("_unused_args", [])
for qstr_name, upy_type in upy_types.items():
if qstr_name == "_unused_args":
continue
rust_type = rust_types.get(qstr_name)
if not rust_type and qstr_name not in unused_args:
if func_name in RUST_DELEGATING_FUNCTIONS:
continue
print(f"Not parsing argument {qstr_name} in {func_name}")
continue
def main() -> None:
for file in ALL_FILES:
print(f"Checking {file}")
check_file(file)
if __name__ == "__main__":
main()