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Diffstat (limited to 'lib9p/protogen/c_format.py')
| -rw-r--r-- | lib9p/protogen/c_format.py | 142 |
1 files changed, 0 insertions, 142 deletions
diff --git a/lib9p/protogen/c_format.py b/lib9p/protogen/c_format.py deleted file mode 100644 index a1bcbf3..0000000 --- a/lib9p/protogen/c_format.py +++ /dev/null @@ -1,142 +0,0 @@ -# lib9p/protogen/c_format.py - Generate C pretty-print functions -# -# Copyright (C) 2024-2025 Luke T. Shumaker <lukeshu@lukeshu.com> -# SPDX-License-Identifier: AGPL-3.0-or-later - - -import idl - -from . import c9util, cutil - -# This strives to be "general-purpose" in that it just acts on the -# *.9p inputs; but (unfortunately?) there are a few special-cases in -# this script, marked with "SPECIAL". - -# pylint: disable=unused-variable -__all__ = ["gen_c_format"] - - -def bf_numname(typ: idl.Bitfield, num: idl.BitNum, base: str) -> str: - prefix = f"{typ.typname}_{num.numname}_".upper() - return c9util.Ident(c9util.add_prefix(prefix, base)) - - -def gen_c_format(versions: set[str], typs: list[idl.UserType]) -> str: - ret = """ -/* *_format *******************************************************************/ -""" - for typ in typs: - ret += "\n" - ret += cutil.ifdef_push(1, c9util.ver_ifdef(typ.in_versions)) - ret += f"static void {c9util.basename(typ)}_format({c9util.typename(typ)} *self, struct fmt_state *state) {{\n" - match typ: - case idl.Number(): - if typ.vals: - ret += "\tswitch (*self) {\n" - for name in typ.vals: - ret += f"\tcase {c9util.Ident(c9util.add_prefix(f'{typ.typname}_'.upper(), name))}:\n" - ret += f'\t\tfmt_state_puts(state, "{name}");\n' - ret += "\t\tbreak;\n" - ret += "\tdefault:\n" - ret += f'\t\tfmt_state_printf(state, "%"PRIu{typ.static_size*8}, *self);\n' - ret += "\t}\n" - else: - ret += f'\t\tfmt_state_printf(state, "%"PRIu{typ.static_size*8}, *self);\n' - case idl.Bitfield(): - val = "*self" - if typ.typname == "dm": # SPECIAL (pretty file permissions) - val = f"(*self & ~(({c9util.typename(typ)})0777))" - ret += "\tbool empty = true;\n" - ret += "\tfmt_state_putchar(state, '(');\n" - nums: set[str] = set() - - for bit in reversed(typ.bits): - match bit.cat: - case "UNUSED" | "USED" | "RESERVED": - if bit.cat == "UNUSED": - bitname = f"1<<{bit.num}" - else: - bitname = bit.bitname - ret += f"\tif ({val} & (UINT{typ.static_size*8}_C(1)<<{bit.num})) {{\n" - ret += "\t\tif (!empty)\n" - ret += "\t\t\tfmt_state_putchar(state, '|');\n" - ret += f'\t\tfmt_state_puts(state, "{bitname}");\n' - ret += "\t\tempty = false;\n" - ret += "\t}\n" - case idl.BitNum(): - if bit.cat.numname in nums: - continue - ret += f"\tswitch ({val} & {bf_numname(typ, bit.cat, 'MASK')}) {{\n" - for name in bit.cat.vals: - ret += f"\tcase {bf_numname(typ, bit.cat, name)}:\n" - bitname = c9util.add_prefix( - f"{bit.cat.numname}_".upper(), name - ) - ret += "\t\tif (!empty)\n" - ret += "\t\t\tfmt_state_putchar(state, '|');\n" - ret += f'\t\tfmt_state_puts(state, "{bitname}");\n' - ret += "\t\tempty = false;\n" - ret += "\t\tbreak;\n" - ret += "\tdefault:\n" - ret += "\t\tif (!empty)\n" - ret += "\t\t\tfmt_state_putchar(state, '|');\n" - ret += f'\t\tfmt_state_printf(state, "%"PRIu{typ.static_size*8}, {val} & {bf_numname(typ, bit.cat, 'MASK')});\n' - ret += "\t\tempty = false;\n" - ret += "\t}\n" - nums.add(bit.cat.numname) - if typ.typname == "dm": # SPECIAL (pretty file permissions) - ret += "\tif (!empty)\n" - ret += "\t\tfmt_state_putchar(state, '|');\n" - ret += f'\tfmt_state_printf(state, "%#04"PRIo{typ.static_size*8}, *self & 0777);\n' - else: - ret += "\tif (empty)\n" - ret += "\t\tfmt_state_putchar(state, '0');\n" - ret += "\tfmt_state_putchar(state, ')');\n" - case idl.Struct(typname="s"): # SPECIAL(string) - ret += "\t/* https://gcc.gnu.org/bugzilla/show_bug.cgi?id=47781 */\n" - ret += "#pragma GCC diagnostic push\n" - ret += '#pragma GCC diagnostic ignored "-Wformat"\n' - ret += '#pragma GCC diagnostic ignored "-Wformat-extra-args"\n' - ret += '\tfmt_state_printf(state, "%.*q", self->len, self->utf8);\n' - ret += "#pragma GCC diagnostic pop\n" - case idl.Struct(): # and idl.Message(): - if isinstance(typ, idl.Message): - ret += f'\tfmt_state_puts(state, "{typ.typname} {{");\n' - else: - ret += "\tfmt_state_putchar(state, '{');\n" - for member in typ.members: - if member.val: - continue - ret += cutil.ifdef_push(2, c9util.ver_ifdef(member.in_versions)) - if member.cnt: - if member.typ.static_size == 1: # SPECIAL (data) - ret += f'\tfmt_state_puts(state, " {member.membname}=<bytedata>");\n' - continue - if isinstance(member.cnt, int): - cnt_str = str(member.cnt) - cnt_typ = "size_t" - else: - cnt_str = f"self->{member.cnt.membname}" - cnt_typ = c9util.typename(member.cnt.typ) - ret += f'\tfmt_state_puts(state, " {member.membname}=[");\n' - ret += f"\tfor ({cnt_typ} i = 0; i < {cnt_str}; i++) {{\n" - ret += "\t\tif (i)\n" - ret += '\t\t\tfmt_state_puts(state, ", ");\n' - if isinstance(member.typ, idl.Primitive): - ret += f'\t\tfmt_state_printf(state, "%"PRIu{member.typ.static_size*8}, self->{member.membname}[i]);\n' - else: - ret += f"\t\t{c9util.basename(member.typ)}_format(&self->{member.membname}[i], state);\n" - ret += "\t}\n" - ret += '\tfmt_state_puts(state, " ]");\n' - else: - ret += f'\tfmt_state_puts(state, " {member.membname}=");\n' - if isinstance(member.typ, idl.Primitive): - ret += f'\tfmt_state_printf(state, "%"PRIu{member.typ.static_size*8}, self->{member.membname});\n' - else: - ret += f"\t{c9util.basename(member.typ)}_format(&self->{member.membname}, state);\n" - ret += cutil.ifdef_pop(1) - ret += '\tfmt_state_puts(state, " }");\n' - ret += "}\n" - ret += cutil.ifdef_pop(0) - - return ret |