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

More ways of writing

Browse source 
Sometimes prettier
This commit is contained in:
John Doty 2024-09-01 06:52:13 -07:00
parent 3012df4ac6
commit 0354fbf4a4
2 changed files with 26 additions and 15 deletions
Download patch file Download diff file Expand all files Collapse all files

30
grammar.py
View file

@ -1,5 +1,5 @@
# This is an example grammar.
from parser import Assoc, Grammar, rule, seq, Rule, Terminal, Re, Highlight, mark, opt
from parser import alt, Assoc, Grammar, rule, seq, Rule, Terminal, Re, Highlight, mark, opt
class FineGrammar(Grammar):
@ -198,20 +198,20 @@ class FineGrammar(Grammar):
@rule("BinaryExpression")
def binary_expression(self) -> Rule:
return (
seq(self.expression, self.EQUAL, self.expression)
| seq(self.expression, self.OR, self.expression)
| seq(self.expression, self.AND, self.expression)
| seq(self.expression, self.EQUALEQUAL, self.expression)
| seq(self.expression, self.BANGEQUAL, self.expression)
| seq(self.expression, self.LESS, self.expression)
| seq(self.expression, self.LESSEQUAL, self.expression)
| seq(self.expression, self.GREATER, self.expression)
| seq(self.expression, self.GREATEREQUAL, self.expression)
| seq(self.expression, self.PLUS, self.expression)
| seq(self.expression, self.MINUS, self.expression)
| seq(self.expression, self.STAR, self.expression)
| seq(self.expression, self.SLASH, self.expression)
return alt(
self.expression + self.EQUAL + self.expression,
self.expression + self.OR + self.expression,
self.expression + self.AND + self.expression,
self.expression + self.EQUALEQUAL + self.expression,
self.expression + self.BANGEQUAL + self.expression,
self.expression + self.LESS + self.expression,
self.expression + self.LESSEQUAL + self.expression,
self.expression + self.GREATER + self.expression,
self.expression + self.GREATEREQUAL + self.expression,
self.expression + self.PLUS + self.expression,
self.expression + self.MINUS + self.expression,
self.expression + self.STAR + self.expression,
self.expression + self.SLASH + self.expression,
)
@rule("IsExpression")