codeql/misc/codegen/lib/cpp.py at codeql-cli/v2.25.6 · github/codeql · GitHub

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import pathlib

import re

from dataclasses import dataclass, field

from typing import List, ClassVar

# taken from https://en.cppreference.com/w/cpp/keyword

cpp_keywords = {

"alignas",

"alignof",

"and",

"and_eq",

"asm",

"atomic_cancel",

"atomic_commit",

"atomic_noexcept",

"auto",

"bitand",

"bitor",

"bool",

"break",

"case",

"catch",

"char",

"char8_t",

"char16_t",

"char32_t",

"class",

"compl",

"concept",

"const",

"consteval",

"constexpr",

"constinit",

"const_cast",

"continue",

"co_await",

"co_return",

"co_yield",

"decltype",

"default",

"delete",

"do",

"double",

"dynamic_cast",

"else",

"enum",

"explicit",

"export",

"extern",

"false",

"float",

"for",

"friend",

"goto",

"if",

"inline",

"int",

"long",

"mutable",

"namespace",

"new",

"noexcept",

"not",

"not_eq",

"nullptr",

"operator",

"or",

"or_eq",

"private",

"protected",

"public",

"reflexpr",

"register",

"reinterpret_cast",

"requires",

"return",

"short",

"signed",

"sizeof",

"static",

"static_assert",

"static_cast",

"struct",

"switch",

"synchronized",

"template",

"this",

"thread_local",

"throw",

"true",

"try",

"typedef",

"typeid",

"typename",

"union",

"unsigned",

"using",

"virtual",

"void",

"volatile",

"wchar_t",

"while",

"xor",

"xor_eq",

}

_field_overrides = [

(

{"base_type": "unsigned"},

(re.compile(r"(.*)_"), lambda m: {"field_name": m[1]}),

]

def get_field_override(field: str):

for r, o in _field_overrides:

m = r.fullmatch(field)

if m:

return o(m) if callable(o) else o

return {}

@dataclass

class Field:

field_name: str

base_type: str

is_optional: bool = False

is_repeated: bool = False

is_unordered: bool = False

is_predicate: bool = False

trap_name: str = None

first: bool = False

def __post_init__(self):

if self.field_name in cpp_keywords:

self.field_name += "_"

@property

def type(self) -> str:

type = self.base_type

if self.is_optional:

type = f"std::optional<{type}>"

if self.is_repeated:

type = f"std::vector<{type}>"

return type

# using @property breaks pystache internals here

def get_streamer(self):

if self.type == "std::string":

return lambda x: f"trapQuoted({x})"

elif self.type == "bool":

return lambda x: f'({x} ? "true" : "false")'

else:

return lambda x: x

@property

def is_single(self):

return not (self.is_optional or self.is_repeated or self.is_predicate)

@property

def is_label(self):

return self.base_type.startswith("TrapLabel<")

@dataclass

class Trap:

table_name: str

fields: List[Field]

id: Field = None

def __post_init__(self):

assert self.fields

self.fields[0].first = True

@dataclass

class TagBase:

base: str

first: bool = False

@dataclass

class Tag:

bases: List[TagBase]

id: str

def __post_init__(self):

if self.bases:

self.bases = [TagBase(b) for b in self.bases]

self.bases[0].first = True

@property

def has_bases(self):

return bool(self.bases)

@dataclass

class TrapList:

extensions = ["h", "cpp"]

traps: List[Trap]

source: str

trap_library_dir: pathlib.Path

gen_dir: pathlib.Path

@dataclass

class TagList:

extensions = ["h"]

tags: List[Tag]

source: str

@dataclass

class ClassBase:

ref: "Class"

first: bool = False

@dataclass

class Class:

bases: List[ClassBase] = field(default_factory=list)

final: bool = False

fields: List[Field] = field(default_factory=list)

trap_name: str = None

def __post_init__(self):

self.bases = [

ClassBase(c) for c in sorted(self.bases, key=lambda cls: cls.name)

]

if self.bases:

self.bases[0].first = True

@property

def has_bases(self):

return bool(self.bases)

@property

def single_fields(self):

return [f for f in self.fields if f.is_single]

@dataclass

class ClassList:

extensions: ClassVar = ["h", "cpp"]

classes: List[Class]

source: str

trap_library: str

include_parent: bool = False

codeql/misc/codegen/lib/cpp.py at codeql-cli/v2.25.6 · github/codeql · GitHub

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