Author: Carl Friedrich Bolz-Tereick <[email protected]>
Branch: pyparser-improvements
Changeset: r93975:89c59a311709
Date: 2018-03-12 16:59 +0100
http://bitbucket.org/pypy/pypy/changeset/89c59a311709/
Log: test Nonterminal1 optimization
diff --git a/pypy/interpreter/pyparser/test/test_parser.py
b/pypy/interpreter/pyparser/test/test_parser.py
--- a/pypy/interpreter/pyparser/test/test_parser.py
+++ b/pypy/interpreter/pyparser/test/test_parser.py
@@ -290,3 +290,28 @@
NEWLINE
ENDMARKER"""
assert tree_from_string(expected, gram) == p.parse("hi 42 end")
+
+
+ def test_optimized_terminal(self):
+ gram = """foo: bar baz 'end' NEWLINE ENDMARKER
+bar: NAME
+baz: NUMBER
+"""
+ p, gram = self.parser_for(gram, False)
+ expected = """
+ foo
+ bar
+ NAME "a_name"
+ baz
+ NUMBER "42"
+ NAME "end"
+ NEWLINE
+ ENDMARKER"""
+ input = "a_name 42 end"
+ tree = p.parse(input)
+ assert tree_from_string(expected, gram) == tree
+ assert isinstance(tree, parser.Nonterminal)
+ assert isinstance(tree.get_child(0), parser.Nonterminal1)
+ assert isinstance(tree.get_child(1), parser.Nonterminal1)
+
+
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