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Precedence but it doesn't work

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Tree sitter doesn't let me do token-based precedence? I don't like
tree-sitter's "make it inline but give it a number" system- seems like
a bug farm to me.
This commit is contained in:
John Doty 2024-08-31 07:22:49 -07:00
parent 98c4bb950f
commit 3012df4ac6
3 changed files with 35 additions and 14 deletions
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15
grammar.py
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@ -1,5 +1,5 @@
# This is an example grammar.
from parser import Assoc, Grammar, Nothing, rule, seq, Rule, Terminal, Re, Highlight, mark, opt
from parser import Assoc, Grammar, rule, seq, Rule, Terminal, Re, Highlight, mark, opt
class FineGrammar(Grammar):
@ -96,7 +96,11 @@ class FineGrammar(Grammar):
@rule
def export_list(self) -> Rule:
return Nothing | self.IDENTIFIER | seq(self.IDENTIFIER, self.COMMA, self.export_list)
return (
self.IDENTIFIER
| seq(self.IDENTIFIER, self.COMMA)
| seq(self.IDENTIFIER, self.COMMA, self.export_list)
)
# Functions
@rule("FunctionDecl")
@ -114,8 +118,9 @@ class FineGrammar(Grammar):
return seq(
self.LPAREN,
opt(
self._first_parameter,
opt(self.COMMA, self._parameter_list),
self._first_parameter
| seq(self._first_parameter, self.COMMA)
| seq(self._first_parameter, self.COMMA, self._parameter_list)
),
self.RPAREN,
)
@ -126,7 +131,7 @@ class FineGrammar(Grammar):
@rule
def _parameter_list(self) -> Rule:
return Nothing | self.parameter | seq(self.parameter, self.COMMA, self._parameter_list)
return self.parameter | seq(self.parameter, self.COMMA, self._parameter_list)
@rule("Parameter")
def parameter(self) -> Rule: