DeCarabas/lrparsers
1
0
Fork 0
Code Issues Pull requests Projects Releases Packages Wiki Activity

[all] A whole new style for grammars

Browse source 
Say good by to the sea of `self.`!
This commit is contained in:
John Doty 2024-11-09 11:21:30 -08:00
parent d6f1e7aba1
commit 5064a768e7
10 changed files with 1097 additions and 1318 deletions
Download patch file Download diff file Expand all files Collapse all files

15
parser/emacs.py
View file

@ -25,8 +25,6 @@ class FaceQuery:
def gather_faces(grammar: parser.Grammar):
nts = {nt.name: nt for nt in grammar.non_terminals()}
def scoop(node: str, input: parser.FlattenedWithMetadata, visited: set[str]) -> list[FaceQuery]:
parts = []
for item in input:
@ -52,13 +50,12 @@ def gather_faces(grammar: parser.Grammar):
)
)
elif isinstance(item, str):
nt = nts[item]
if nt.transparent:
if nt.name in visited:
elif isinstance(item, parser.NonTerminal):
if item.transparent:
if item.name in visited:
continue
visited.add(nt.name)
body = nt.fn(grammar)
visited.add(item.name)
body = item.definition
for production in body.flatten(with_metadata=True):
parts.extend(scoop(node, production, visited))
@ -69,7 +66,7 @@ def gather_faces(grammar: parser.Grammar):
if rule.transparent:
continue
body = rule.fn(grammar)
body = rule.definition
for production in body.flatten(with_metadata=True):
queries.extend(scoop(rule.name, production, set()))