# ------------------------------------------------------------------------------
# CodeHawk C Analyzer
# Author: Henny Sipma
# ------------------------------------------------------------------------------
# The MIT License (MIT)
#
# Copyright (c) 2017-2020 Kestrel Technology LLC
# Copyright (c) 2020-2022 Henny B. Sipma
# Copyright (c) 2023-2024 Aarno Labs LLC
#
# Permission is hereby granted, free of charge, to any person obtaining a copy
# of this software and associated documentation files (the "Software"), to deal
# in the Software without restriction, including without limitation the rights
# to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
# copies of the Software, and to permit persons to whom the Software is
# furnished to do so, subject to the following conditions:
#
# The above copyright notice and this permission notice shall be included in all
# copies or substantial portions of the Software.
#
# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
# FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
# AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
# LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
# OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
# SOFTWARE.
# ------------------------------------------------------------------------------
"""Initializer of global variables."""
from typing import List, TYPE_CHECKING
from chc.app.CDictionaryRecord import CDeclarationsRecord
import chc.util.IndexedTable as IT
if TYPE_CHECKING:
from chc.app.CExp import CExp
from chc.app.CTyp import CTyp
from chc.app.CDeclarations import CDeclarations
from chc.app.COffset import COffset
[docs]class CInitInfo(CDeclarationsRecord):
"""Global variable initializer."""
def __init__(self, decls: "CDeclarations", ixval: IT.IndexedTableValue):
CDeclarationsRecord.__init__(self, decls, ixval)
@property
def is_single(self) -> bool:
return False
@property
def is_compound(self) -> bool:
return False
[docs]class CSingleInitInfo(CInitInfo):
"""Initializer of a simple variable.
- args[0]: index of initialization expression in cdictionary
"""
def __init__(self, decls: "CDeclarations", ixval: IT.IndexedTableValue):
CInitInfo.__init__(self, decls, ixval)
@property
def exp(self) -> "CExp":
return self.dictionary.get_exp(self.args[0])
@property
def is_single(self) -> bool:
return True
def __str__(self) -> str:
return str(self.exp)
[docs]class CCompoundInitInfo(CInitInfo):
"""Initializer of a struct or array.
- args[0]: index of type of initializer in cdictionary
"""
def __init__(self, decls: "CDeclarations", ixval: IT.IndexedTableValue):
CInitInfo.__init__(self, decls, ixval)
@property
def typ(self) -> "CTyp":
return self.dictionary.get_typ(self.args[0])
@property
def offset_initializers(self) -> List["COffsetInitInfo"]:
return [self.decls.get_offset_init(x) for x in self.args[1:]]
@property
def is_compound(self) -> bool:
return True
def __str__(self) -> str:
return "\n".join([str(x) for x in self.offset_initializers])
[docs]class COffsetInitInfo(CDeclarationsRecord):
"""Component of a compound initializer.
- args[0]: index of offset expression in cdictionary
- args[1]: index of initinfo in cdeclarations
"""
def __init__(self, decls: "CDeclarations", ixval: IT.IndexedTableValue):
CDeclarationsRecord.__init__(self, decls, ixval)
@property
def offset(self) -> "COffset":
return self.dictionary.get_offset(self.args[0])
@property
def initializer(self) -> CInitInfo:
return self.decls.get_initinfo(self.args[1])
def __str__(self) -> str:
return str(self.offset) + ":=" + str(self.initializer)