From 459141ef81edcaa0f552eeb318cb4b7b7e8ef1c8 Mon Sep 17 00:00:00 2001
From: Melody Horn <melody@boringcactus.com>
Date: Thu, 25 Mar 2021 18:14:38 -0600
Subject: avoid circular dependencies in parsing

---
 yapymake/makefile/token.py | 21 ++++++++++++++++-----
 1 file changed, 16 insertions(+), 5 deletions(-)

(limited to 'yapymake')

diff --git a/yapymake/makefile/token.py b/yapymake/makefile/token.py
index a0c3f8f..948fcac 100644
--- a/yapymake/makefile/token.py
+++ b/yapymake/makefile/token.py
@@ -12,6 +12,8 @@ __all__ = [
 ]
 
 class TokenString(Iterable['Token']):
+    _tokens: List['Token']
+
     def __init__(self, my_tokens: List['Token'] = None):
         if my_tokens is None:
             my_tokens = []
@@ -27,6 +29,9 @@ class TokenString(Iterable['Token']):
     def __iter__(self) -> Iterator['Token']:
         return iter(self._tokens)
 
+    def __repr__(self) -> str:
+        return f'TokenString({repr(self._tokens)})'
+
     def split_once(self, delimiter: str) -> Optional[Tuple['TokenString', 'TokenString']]:
         result0 = []
         self_iter = iter(self._tokens)
@@ -70,8 +75,11 @@ def macro_expansion_body(end: str) -> Parser[MacroToken]:
     subst = preceded(tag(":"), separated_pair(tokens('='), '=', tokens(end)))
     return map_parser(pair(macro_name, opt(subst)), MacroToken)
 
-parens_macro_expansion = delimited(tag('$('), macro_expansion_body(')'), tag(')'))
-braces_macro_expansion = delimited(tag('${'), macro_expansion_body('}'), tag('}'))
+def parens_macro_expansion(text: str) -> ParseResult[MacroToken]:
+    return delimited(tag('$('), macro_expansion_body(')'), tag(')'))(text)
+
+def braces_macro_expansion(text: str) -> ParseResult[MacroToken]:
+    return delimited(tag('${'), macro_expansion_body('}'), tag('}'))(text)
 
 def build_tiny_expansion(name_probably: str) -> Token:
     if name_probably == '$':
@@ -79,9 +87,11 @@ def build_tiny_expansion(name_probably: str) -> Token:
     else:
         return MacroToken(name_probably)
 
-tiny_macro_expansion = map_parser(preceded(tag('$'), verify(any_char, lambda c: c not in ['(', '{'])), build_tiny_expansion)
+def tiny_macro_expansion(text: str) -> ParseResult[MacroToken]:
+    return map_parser(preceded(tag('$'), verify(any_char, lambda c: c not in ['(', '{'])), build_tiny_expansion)(text)
 
-macro_expansion = alt(tiny_macro_expansion, parens_macro_expansion, braces_macro_expansion)
+def macro_expansion(text: str) -> ParseResult[MacroToken]:
+    return alt(tiny_macro_expansion, parens_macro_expansion, braces_macro_expansion)(text)
 
 just_text = map_parser(take_till1(lambda c: c == '$'), TextToken)
 
@@ -100,7 +110,8 @@ empty_tokens = map_parser(tag(''), lambda _: TokenString.text(''))
 def tokens(until: Optional[str] = None) -> Parser[TokenString]:
     return alt(map_parser(many1(single_token(until)), TokenString), empty_tokens)
 
-full_text_tokens = all_consuming(tokens())
+def full_text_tokens(text: str) -> ParseResult[TokenString]:
+    return all_consuming(tokens())(text)
 
 def tokenize(text: str) -> TokenString:
     result, _ = full_text_tokens(text)
-- 
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