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import py
from rpython.rlib.parsing.tree import Nonterminal, Symbol
from rpython.rlib.parsing.lexer import Token, SourcePos
class TestTreeAppLevel(object):
def test_nonterminal_simple(self):
pos = SourcePos(1,2,3)
tree = Nonterminal(symbol="a",
children=[
Symbol(symbol="b",
additional_info="b",
token=Token(name="B",
source="b",
source_pos=pos))])
assert tree.getsourcepos() == pos
def test_nonterminal_nested(self):
pos = SourcePos(1,2,3)
tree = Nonterminal(symbol="a",
children=[
Nonterminal(symbol="c",
children=[
Symbol(symbol="b",
additional_info="b",
token=Token(name="B",
source="b",
source_pos=pos))])])
assert tree.getsourcepos() == pos
def test_nonterminal_simple_empty(self):
tree = Nonterminal(symbol="a",
children=[])
assert len(tree.children) == 0 # trivial
py.test.raises(IndexError, tree.getsourcepos)
def test_nonterminal_nested_empty(self):
tree = Nonterminal(symbol="a",
children=[Nonterminal(symbol="c",
children=[Nonterminal(symbol="c",
children=[Nonterminal(symbol="c",
children=[Nonterminal(symbol="c",
children=[Nonterminal(symbol="c",
children=[Nonterminal(symbol="c",
children=[])])])])])])])
assert len(tree.children) != 0 # the not-so-trivial part.
py.test.raises(IndexError, tree.getsourcepos)
class TestTreeTranslated(object):
def compile(self, f):
from rpython.translator.c.test.test_genc import compile
return compile(f, [])
def test_nonterminal_simple_empty(self):
def foo():
tree = Nonterminal(symbol="a",
children=[])
try:
return tree.getsourcepos()
except IndexError:
return -42
f = self.compile(foo)
assert f() == -42
def test_nonterminal_nested_empty(self):
def foo():
tree = Nonterminal(symbol="a",
children=[Nonterminal(symbol="c",
children=[Nonterminal(symbol="c",
children=[Nonterminal(symbol="c",
children=[Nonterminal(symbol="c",
children=[Nonterminal(symbol="c",
children=[Nonterminal(symbol="c",
children=[])])])])])])])
try:
return tree.getsourcepos()
except IndexError:
return -42
f = self.compile(foo)
assert f() == -42
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