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from functools import singledispatch
from enum import Enum
from lib2to3.pgen2.pgen import generate_grammar
from completion_flow import (
Node,
Check,
Suggest,
Variable,
Condition,
Suggestion,
If,
And,
Not,
generate_flow,
)
class ZSHVariable(str, Enum):
CURRENT = 'CURRENT'
NORMARG = 'NORMARG'
PREDECESSOR = 'predecessor'
METHODS = 'METHODS'
SUGGESTION_TO_FUNCTION = {
Suggestion.METHOD: '_httpie_method',
Suggestion.URL: '_httpie_url',
Suggestion.REQUEST_ITEM: '_httpie_request_item',
}
@singledispatch
def compile_zsh(node: Node) -> ...:
raise NotImplementedError(f'{type(node)} is not supported')
@compile_zsh.register(If)
def compile_if(node: If) -> str:
check = compile_zsh(node.check)
action = compile_zsh(node.action)
return f'if {check}; then\n {action} && ret=0\nfi'
@compile_zsh.register(Check)
def compile_check(node: Check) -> str:
args = [
ZSHVariable(arg.name) if isinstance(arg, Variable) else arg
for arg in node.args
]
if node.condition is Condition.POSITION_EQ:
return (
f'(( {ZSHVariable.CURRENT} == {ZSHVariable.NORMARG} + {args[0]} ))'
)
elif node.condition is Condition.POSITION_GE:
return (
f'(( {ZSHVariable.CURRENT} >= {ZSHVariable.NORMARG} + {args[0]} ))'
)
elif node.condition is Condition.CONTAINS_PREDECESSOR:
parts = [
'[[ ${',
args[0],
'[(ie)$',
ZSHVariable.PREDECESSOR,
']}',
' -le ${#',
args[0],
'} ]]',
]
return ''.join(parts)
@compile_zsh.register(And)
def compile_and(node: And) -> str:
return ' && '.join(compile_zsh(check) for check in node.checks)
@compile_zsh.register(Not)
def compile_not(node: Not) -> str:
return f'! {compile_zsh(node.check)}'
@compile_zsh.register(Suggest)
def compile_suggest(node: Suggest) -> str:
return SUGGESTION_TO_FUNCTION[node.suggestion]
|
