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Dedup: extract shared _all_elim_str helper for AllElim/AllElimTypes (refs #813) #1147

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Dedup: extract shared _all_elim_str helper for AllElim/AllElimTypes (refs #813) #1147

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42 changes: 22 additions & 20 deletions abstract_syntax/proofs.py
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Original file line number Diff line number Diff line change
Expand Up @@ -325,6 +325,26 @@ def _postfix_base_str(p: Proof) -> str:
return '(' + str(p) + ')'


def _all_elim_str(univ: Proof, arg: object, pos: Tuple[int, int],
open_b: str, close_b: str) -> str:
"""Printed form of one argument in an ``AllElim`` / ``AllElimTypes`` chain.
``pos`` is ``(index, count)``: the first argument (index 0) prints the
postfix base and the opening bracket, and the last argument appends the
closing bracket. ``open_b`` / ``close_b`` are ``[``/``]`` for terms and
``<``/``>`` for types.
"""
s, e = pos
if s == 0:
res = _postfix_base_str(univ) + f"{open_b}{arg}"
else:
res = str(univ) + f", {arg}"

if s + 1 == e:
res += close_b

return res


@dataclass
class AllElimTypes(Proof):
univ: Proof
Expand All @@ -335,16 +355,7 @@ class AllElimTypes(Proof):
pos: Tuple[int, int]

def __str__(self) -> str:
s, e = self.pos
if s == 0:
res = _postfix_base_str(self.univ) + f"<{self.arg}"
else:
res = str(self.univ) + f", {self.arg}"

if s + 1 == e:
res += ">"

return res
return _all_elim_str(self.univ, self.arg, self.pos, "<", ">")

@dataclass
class AllElim(Proof):
Expand All @@ -356,16 +367,7 @@ class AllElim(Proof):
pos: Tuple[int, int]

def __str__(self) -> str:
s, e = self.pos
if s == 0:
res = _postfix_base_str(self.univ) + f"[{self.arg}"
else:
res = str(self.univ) + f", {self.arg}"

if s + 1 == e:
res += "]"

return res
return _all_elim_str(self.univ, self.arg, self.pos, "[", "]")

@dataclass
class SomeIntro(Proof):
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