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"""Generate the list of opcode IDs.
Reads the instruction definitions from bytecodes.c.
Writes the IDs to opcode_ids.h by default.
"""
import argparse
import os.path
import sys
from analyzer import (
Analysis,
Instruction,
analyze_files,
)
from generators_common import (
DEFAULT_INPUT,
ROOT,
write_header,
)
from cwriter import CWriter
from typing import TextIO
DEFAULT_OUTPUT = ROOT / "Include/opcode_ids.h"
def generate_opcode_header(
filenames: list[str], analysis: Analysis, outfile: TextIO
) -> None:
write_header(__file__, filenames, outfile)
out = CWriter(outfile, 0, False)
with out.header_guard("Py_OPCODE_IDS_H"):
out.emit("/* Instruction opcodes for compiled code */\n")
def write_define(name: str, op: int) -> None:
out.emit(f"#define {name:<38} {op:>3}\n")
for op, name in sorted([(op, name) for (name, op) in analysis.opmap.items()]):
write_define(name, op)
out.emit("\n")
write_define("HAVE_ARGUMENT", analysis.have_arg)
write_define("MIN_INSTRUMENTED_OPCODE", analysis.min_instrumented)
arg_parser = argparse.ArgumentParser(
description="Generate the header file with all opcode IDs.",
formatter_class=argparse.ArgumentDefaultsHelpFormatter,
)
arg_parser.add_argument(
"-o", "--output", type=str, help="Generated code", default=DEFAULT_OUTPUT
)
arg_parser.add_argument(
"input", nargs=argparse.REMAINDER, help="Instruction definition file(s)"
)
if __name__ == "__main__":
args = arg_parser.parse_args()
if len(args.input) == 0:
args.input.append(DEFAULT_INPUT)
data = analyze_files(args.input)
with open(args.output, "w") as outfile:
generate_opcode_header(args.input, data, outfile)
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