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qemu/scripts/qapi/source.py

72 lines
2.0 KiB
Python

#
# QAPI frontend source file info
#
# Copyright (c) 2019 Red Hat Inc.
#
# Authors:
# Markus Armbruster <armbru@redhat.com>
#
# This work is licensed under the terms of the GNU GPL, version 2.
# See the COPYING file in the top-level directory.
import copy
from typing import List, Optional, TypeVar
class QAPISchemaPragma:
# Replace with @dataclass in Python 3.7+
# pylint: disable=too-few-public-methods
def __init__(self) -> None:
# Are documentation comments required?
self.doc_required = False
# Commands whose names may use '_'
self.command_name_exceptions: List[str] = []
# Commands allowed to return a non-dictionary
self.command_returns_exceptions: List[str] = []
# Types whose member names may violate case conventions
self.member_name_exceptions: List[str] = []
class QAPISourceInfo:
T = TypeVar('T', bound='QAPISourceInfo')
def __init__(self, fname: str, parent: Optional['QAPISourceInfo']):
self.fname = fname
self.line = 1
self.parent = parent
self.pragma: QAPISchemaPragma = (
parent.pragma if parent else QAPISchemaPragma()
)
self.defn_meta: Optional[str] = None
self.defn_name: Optional[str] = None
def set_defn(self, meta: str, name: str) -> None:
self.defn_meta = meta
self.defn_name = name
def next_line(self: T) -> T:
info = copy.copy(self)
info.line += 1
return info
def loc(self) -> str:
return f"{self.fname}:{self.line}"
def in_defn(self) -> str:
if self.defn_name:
return "%s: In %s '%s':\n" % (self.fname,
self.defn_meta, self.defn_name)
return ''
def include_path(self) -> str:
ret = ''
parent = self.parent
while parent:
ret = 'In file included from %s:\n' % parent.loc() + ret
parent = parent.parent
return ret
def __str__(self) -> str:
return self.include_path() + self.in_defn() + self.loc()