218 lines
6.5 KiB
Python
218 lines
6.5 KiB
Python
#encoding: utf-8
|
|
|
|
import ast
|
|
import re
|
|
from collections import defaultdict
|
|
from dataclasses import dataclass, field
|
|
from enum import Enum
|
|
from typing import Dict, List, Optional, Set
|
|
|
|
from .cxxparser import CXXFileParser, CXXParseResult, Class, LiteralVariable, Method, Variable
|
|
from .type import array_base, base_types, is_array_type
|
|
|
|
|
|
class CallbackType(Enum):
|
|
NotCallback = 0 # not a callback
|
|
Direct = 1
|
|
Async = 2
|
|
|
|
|
|
"""
|
|
42 - dec
|
|
0b101010 - bin
|
|
052 - oct
|
|
0xaa - hex
|
|
0Xaa - hex
|
|
1234u - suffix
|
|
1234ull - suffix
|
|
145'920 - with single quotes
|
|
1.0 - double
|
|
1.0f - float
|
|
|
|
ignore:
|
|
5.9604644775390625e-8F16
|
|
'123123'
|
|
|
|
unsuportted:
|
|
1e10 - science
|
|
1E10 - science
|
|
1e+10
|
|
1e-10
|
|
1E-10
|
|
1E+10
|
|
|
|
"""
|
|
cpp_digit_re = re.compile(
|
|
"(0b[01]+|0[0-7]+|0[Xx][0-9a-fA-F]+|[0-9']*[0-9]+)((ull)|(ULL)|(llu)|(LLU)|(ul)|(UL)|(ll)|(LL)|[UuLl])?$")
|
|
|
|
cpp_digit_suffix_types = {
|
|
'u': 'unsigned int',
|
|
'l': 'long',
|
|
'ul': 'usngined long',
|
|
'll': 'long long',
|
|
'ull': 'unsigned long long',
|
|
'llu': 'unsigned long long',
|
|
'f': 'float'
|
|
}
|
|
cpp_digit_suffix_types.update({k.upper(): v for k, v in cpp_digit_suffix_types.items()})
|
|
|
|
|
|
@dataclass
|
|
class PreprocessedMethod(Method):
|
|
has_overload: bool = False
|
|
|
|
|
|
@dataclass
|
|
class PreprocessedClass(Class):
|
|
functions: Dict[str, List[PreprocessedMethod]] = field(
|
|
default_factory=(lambda: defaultdict(list)))
|
|
need_wrap: bool = False # if need_wrap is true, wrap this to dict
|
|
is_pure_virtual: bool = False # generator will not assign python constructor for pure virtual
|
|
|
|
|
|
class PreProcessorResult:
|
|
|
|
def __init__(self):
|
|
super().__init__()
|
|
self.dict_classes: Set[str] = set()
|
|
self.const_macros: Dict[str, Variable] = {}
|
|
self.classes: Dict[str, PreprocessedClass] = {}
|
|
|
|
|
|
class PreProcessor:
|
|
|
|
def __init__(self, parse_result: CXXParseResult):
|
|
self.parser_result = parse_result
|
|
|
|
def process(self)->PreProcessorResult:
|
|
result = PreProcessorResult()
|
|
|
|
# all pod struct to dict
|
|
# todo: generator doesn't support dict class currently
|
|
# result.dict_classes = self._find_dict_classes()
|
|
|
|
# all error written macros to constant
|
|
result.const_macros = self._pre_process_constant_macros()
|
|
|
|
result.classes = self._pre_process_classes(result.dict_classes)
|
|
return result
|
|
|
|
def _pre_process_classes(self, dict_classes: Set[str]):
|
|
classes: Dict[str, PreprocessedClass] = {}
|
|
for c in self.parser_result.classes.values():
|
|
gc = PreprocessedClass(**c.__dict__)
|
|
gc.functions = {
|
|
name: [PreprocessedMethod(**m.__dict__) for m in ms]
|
|
for name, ms in gc.functions.items()
|
|
}
|
|
if c.is_polymorphic:
|
|
gc.need_wrap = True
|
|
classes[gc.name] = gc
|
|
for c in classes.values():
|
|
for ms in c.functions.values():
|
|
|
|
# check overload
|
|
if len(ms) >= 2:
|
|
for m in ms:
|
|
m.has_overload = True
|
|
|
|
# check pure virtual
|
|
for m in ms:
|
|
if m.is_pure_virtual:
|
|
c.is_pure_virtual = True
|
|
|
|
return classes
|
|
|
|
def _pre_process_constant_macros(self):
|
|
macros = {}
|
|
for name, definition in self.parser_result.macros.items():
|
|
value = PreProcessor._try_convert_to_constant(definition)
|
|
if value is not None:
|
|
value.name = name
|
|
macros[name] = value
|
|
return macros
|
|
|
|
def _find_dict_classes(self):
|
|
dict_classes = set()
|
|
for c in self.parser_result.classes.values():
|
|
if self._can_convert_to_dict(c):
|
|
dict_classes.add(c.name)
|
|
return dict_classes
|
|
|
|
def _to_basic_type_combination(self, t: str):
|
|
try:
|
|
return self._to_basic_type_combination(self.parser_result.typedefs[t])
|
|
except KeyError:
|
|
return t
|
|
|
|
def _is_basic_type(self, t: str):
|
|
basic_combination = self._to_basic_type_combination(t)
|
|
|
|
# just a basic type, such as int, char, short, double etc.
|
|
if basic_combination in base_types:
|
|
return True
|
|
|
|
# array of basic type, such as int[], char[]
|
|
if is_array_type(basic_combination) \
|
|
and array_base(basic_combination) in base_types:
|
|
return True
|
|
|
|
print(basic_combination)
|
|
return False
|
|
|
|
def _can_convert_to_dict(self, c: Class):
|
|
# first: no functions
|
|
if c.functions:
|
|
return False
|
|
|
|
# second: all variables are basic
|
|
for v in c.variables.values():
|
|
if not self._is_basic_type(v.type):
|
|
return False
|
|
|
|
return True
|
|
|
|
@staticmethod
|
|
def _try_parse_cpp_digit_literal(literal: str):
|
|
m = cpp_digit_re.match(literal)
|
|
if m:
|
|
digit = m.group(1)
|
|
suffix = m.group(2)
|
|
val = ast.literal_eval(digit.replace("'", ""))
|
|
t = 'int'
|
|
if suffix:
|
|
t = cpp_digit_suffix_types[suffix]
|
|
return LiteralVariable(name='', type=t, default=val, literal=literal)
|
|
return None
|
|
|
|
@staticmethod
|
|
def _try_convert_to_constant(definition: str) -> Optional[Variable]:
|
|
definition = definition.strip()
|
|
try:
|
|
if definition:
|
|
var = PreProcessor._try_parse_cpp_digit_literal(definition)
|
|
if var:
|
|
return var
|
|
val = None
|
|
if definition.startswith('"') and definition.endswith('"'):
|
|
val = ast.literal_eval(definition)
|
|
return LiteralVariable(name='',
|
|
type='const char *',
|
|
default=val,
|
|
literal=definition)
|
|
if definition.startswith("'") and definition.endswith("'"):
|
|
val = CXXFileParser.character_literal_to_int(definition[1:-1])
|
|
t = 'unsigned'
|
|
valid = True
|
|
if len(definition) >= 6:
|
|
t = 'unsigned long long'
|
|
valid = False
|
|
return LiteralVariable(name='',
|
|
type='int',
|
|
default=val,
|
|
literal=definition,
|
|
literal_valid=valid)
|
|
except SyntaxError:
|
|
pass
|
|
return None
|