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Refactor geckolib atoms regen script

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This commit is contained in:
Ravi Shankar 2016-09-28 15:02:47 +05:30 • committed by Manish Goregaokar
parent c834e57f4d
commit fa06b922c7
2 changed files with 73 additions and 49 deletions
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110
components/style/binding_tools/regen_atoms.py
View file

@ -8,18 +8,27 @@ import re
import os
PRELUDE = """
/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
/* Autogenerated file, DO NOT EDIT DIRECTLY */
"""[1:]
def gnu_symbolify(source, ident):
return "_ZN" + str(len(source.CLASS)) + source.CLASS + str(len(ident)) + ident + "E"
return "_ZN{}{}{}{}E".format(len(source.CLASS), source.CLASS, len(ident), ident)
def msvc64_symbolify(source, ident):
return "?" + ident + "@" + source.CLASS + "@@2PEAV" + source.TYPE + "@@EA"
return "?{}@{}@@2PEAV{}@@EA".format(ident, source.CLASS, source.TYPE)
def msvc32_symbolify(source, ident):
# Prepend "\x01" to avoid LLVM prefixing the mangled name with "_".
# See https://github.com/rust-lang/rust/issues/36097
return "\\x01?" + ident + "@" + source.CLASS + "@@2PAV" + source.TYPE + "@@A"
return "\\x01?{}@{}@@2PAV{}@@A".format(ident, source.CLASS, source.TYPE)
class GkAtomSource:
@ -92,56 +101,71 @@ def collect_atoms(objdir):
atoms.append(Atom(source, result.group(1), result.group(2)))
return atoms
PRELUDE = """
/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
/* Autogenerated file, DO NOT EDIT DIRECTLY */
"""[1:]
IMPORTS = ("\nuse gecko_bindings::structs::nsIAtom;"
"\nuse string_cache::Atom;\n\n")
ATOM_TEMPLATE = (" #[link_name = \"{link_name}\"]\n"
" pub static {name}: *mut {type};")
UNSAFE_STATIC = ("#[inline(always)]\n"
"pub fn unsafe_atom_from_static(ptr: *mut nsIAtom) -> Atom {\n"
" unsafe { Atom::from_static(ptr) }\n"
"}\n\n")
CFG_IF = '''
cfg_if! {{
if #[cfg(not(target_env = "msvc"))] {{
extern {{
{gnu}
}}
}} else if #[cfg(target_pointer_width = "64")] {{
extern {{
{msvc64}
}}
}} else {{
extern {{
{msvc32}
}}
}}
}}
'''
RULE_TEMPLATE = ('("{atom}") => '
'{{ $crate::string_cache::atom_macro::unsafe_atom_from_static'
'($crate::string_cache::atom_macro::{name} as *mut _) }};')
MACRO = '''
#[macro_export]
macro_rules! atom {{
{}
}}
'''
def write_atom_macro(atoms, file_name):
ATOM_TEMPLATE = """
#[link_name = "{link_name}"]
pub static {name}: *mut {type};
"""[1:]
def write_items(f, func):
f.write(" extern {\n")
for atom in atoms:
f.write(ATOM_TEMPLATE.format(name=atom.ident,
link_name=func(atom),
type=atom.type()))
f.write(" }\n")
def get_symbols(func):
return '\n'.join([ATOM_TEMPLATE.format(name=atom.ident,
link_name=func(atom),
type=atom.type()) for atom in atoms])
with open(file_name, "wb") as f:
f.write(PRELUDE)
f.write("use gecko_bindings::structs::nsIAtom;\n\n")
f.write("use string_cache::Atom;\n\n")
f.write(IMPORTS)
for source in SOURCES:
if source.TYPE != "nsIAtom":
f.write("pub enum {} {{}}\n\n".format(source.TYPE))
f.write("""
#[inline(always)] pub fn unsafe_atom_from_static(ptr: *mut nsIAtom) -> Atom {
unsafe { Atom::from_static(ptr) }
}\n\n
""")
f.write("cfg_if! {\n")
f.write(" if #[cfg(not(target_env = \"msvc\"))] {\n")
write_items(f, Atom.gnu_symbol)
f.write(" } else if #[cfg(target_pointer_width = \"64\")] {\n")
write_items(f, Atom.msvc64_symbol)
f.write(" } else {\n")
write_items(f, Atom.msvc32_symbol)
f.write(" }\n")
f.write("}\n\n")
f.write("#[macro_export]\n")
f.write("macro_rules! atom {\n")
f.writelines(['("%s") => { $crate::string_cache::atom_macro::unsafe_atom_from_static(\
$crate::string_cache::atom_macro::%s as *mut _) };\n'
% (atom.value, atom.ident) for atom in atoms])
f.write("}\n")
f.write(UNSAFE_STATIC)
gnu_symbols = get_symbols(Atom.gnu_symbol)
msvc32_symbols = get_symbols(Atom.msvc32_symbol)
msvc64_symbols = get_symbols(Atom.msvc64_symbol)
f.write(CFG_IF.format(gnu=gnu_symbols, msvc32=msvc32_symbols, msvc64=msvc64_symbols))
macro_rules = [RULE_TEMPLATE.format(atom=atom.value, name=atom.ident) for atom in atoms]
f.write(MACRO.format('\n'.join(macro_rules)))
PSEUDO_ELEMENT_HEADER = """

12
components/style/gecko_string_cache/atom_macro.rs
View file

@ -3,21 +3,21 @@
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
/* Autogenerated file, DO NOT EDIT DIRECTLY */
use gecko_bindings::structs::nsIAtom;
use gecko_bindings::structs::nsIAtom;
use string_cache::Atom;
pub enum nsICSSPseudoElement {}
pub enum nsICSSAnonBoxPseudo {}
#[inline(always)] pub fn unsafe_atom_from_static(ptr: *mut nsIAtom) -> Atom {
unsafe { Atom::from_static(ptr) }
}
#[inline(always)]
pub fn unsafe_atom_from_static(ptr: *mut nsIAtom) -> Atom {
unsafe { Atom::from_static(ptr) }
}
cfg_if! {
cfg_if! {
if #[cfg(not(target_env = "msvc"))] {
extern {
#[link_name = "_ZN9nsGkAtoms6_emptyE"]