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qapi: Factor common recursion out of cgen_ifcond(), docgen_ifcond()

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Signed-off-by: Markus Armbruster <armbru@redhat.com>
Message-Id: <20210831123809.1107782-7-armbru@redhat.com>
Reviewed-by: Marc-André Lureau <marcandre.lureau@redhat.com>
This commit is contained in:
Markus Armbruster 2021-08-31 14:38:03 +02:00
parent 82ca72c023
commit ccea6a8637
1 changed files with 25 additions and 20 deletions
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45
scripts/qapi/common.py
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@ -17,6 +17,7 @@ from typing import (
Dict,
Match,
Optional,
Sequence,
Union,
)
@ -200,33 +201,37 @@ def guardend(name: str) -> str:
name=c_fname(name).upper())
def cgen_ifcond(ifcond: Optional[Union[str, Dict[str, Any]]]) -> str:
def gen_ifcond(ifcond: Optional[Union[str, Dict[str, Any]]],
cond_fmt: str, not_fmt: str,
all_operator: str, any_operator: str) -> str:
def do_gen(ifcond: Union[str, Dict[str, Any]]):
if isinstance(ifcond, str):
return cond_fmt % ifcond
assert isinstance(ifcond, dict) and len(ifcond) == 1
if 'not' in ifcond:
return not_fmt % do_gen(ifcond['not'])
if 'all' in ifcond:
gen = gen_infix(all_operator, ifcond['all'])
else:
gen = gen_infix(any_operator, ifcond['any'])
return gen
def gen_infix(operator: str, operands: Sequence[Any]) -> str:
return '(' + operator.join([do_gen(o) for o in operands]) + ')'
if not ifcond:
return ''
if isinstance(ifcond, str):
return 'defined(' + ifcond + ')'
return do_gen(ifcond)
oper, operands = next(iter(ifcond.items()))
if oper == 'not':
return '!' + cgen_ifcond(operands)
oper = {'all': ' && ', 'any': ' || '}[oper]
operands = [cgen_ifcond(o) for o in operands]
return '(' + oper.join(operands) + ')'
def cgen_ifcond(ifcond: Optional[Union[str, Dict[str, Any]]]) -> str:
return gen_ifcond(ifcond, 'defined(%s)', '!%s', ' && ', ' || ')
def docgen_ifcond(ifcond: Optional[Union[str, Dict[str, Any]]]) -> str:
# TODO Doc generated for conditions needs polish
if not ifcond:
return ''
if isinstance(ifcond, str):
return ifcond
oper, operands = next(iter(ifcond.items()))
if oper == 'not':
return '!' + docgen_ifcond(operands)
oper = {'all': ' and ', 'any': ' or '}[oper]
operands = [docgen_ifcond(o) for o in operands]
return '(' + oper.join(operands) + ')'
return gen_ifcond(ifcond, '%s', '!%s', ' and ', ' or ')
def gen_if(cond: str) -> str: