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|
from unittest import TestCase
from terml.nodes import termMaker as t
from ometa.vm_builder import writeBytecode, writeBytecodeRule, writeBytecodeGrammar
class TestVMBuilder(TestCase):
def test_exactly(self):
x = t.Exactly("a")
self.assertEqual(writeBytecode(x),
[t.Match("a")])
def test_apply(self):
one = t.Action("1")
x = t.Action("x")
a = t.Apply("foo", "main", [one, x])
self.assertEqual(writeBytecode(a),
[t.Python('1'),
t.Push(),
t.Python('x'),
t.Push(),
t.Call('foo')])
def test_foreignApply(self):
one = t.Action("1")
x = t.Action("x")
a = t.ForeignApply("thegrammar", "foo", "main", [one, x])
self.assertEqual(writeBytecode(a),
[t.Python('1'),
t.Push(),
t.Python('x'),
t.Push(),
t.ForeignCall('thegrammar', 'foo')])
def test_superApply(self):
one = t.Action("1")
x = t.Action("x")
a = t.Apply("super", "main", [one, x])
self.assertEqual(writeBytecode(a),
[t.Python('1'),
t.Push(),
t.Python('x'),
t.Push(),
t.SuperCall('main')])
def test_many(self):
xs = t.Many(t.Exactly("x"))
self.assertEqual(writeBytecode(xs),
[t.Choice(3),
t.Match("x"),
t.Commit(-2)])
# self.assertEqual(writeBytecode(xs),
# [t.Choice(3),
# t.Match("x"),
# t.PartialCommit(0)])
def test_many1(self):
xs = t.Many1(t.Exactly("x"))
self.assertEqual(writeBytecode(xs),
[t.Match('x'),
t.Choice(3),
t.Match('x'),
t.Commit(-2)])
# self.assertEqual(writeBytecode(xs),
# [t.Match('x'),
# t.Choice(4),
# t.Match('x'),
# t.PartialCommit(1)])
def test_tripleOr(self):
xy = t.Or([t.Exactly("x"),
t.Exactly("y"),
t.Exactly("z")])
self.assertEqual(writeBytecode(xy),
[t.Choice(3),
t.Match('x'),
t.Commit(5),
t.Choice(3),
t.Match('y'),
t.Commit(2),
t.Match('z')])
def test_doubleOr(self):
xy = t.Or([t.Exactly("x"),
t.Exactly("y")])
self.assertEqual(writeBytecode(xy),
[t.Choice(3),
t.Match('x'),
t.Commit(2),
t.Match('y')])
def test_singleOr(self):
x1 = t.Or([t.Exactly("x")])
x = t.Exactly("x")
self.assertEqual(writeBytecode(x1),
writeBytecode(x))
def test_optional(self):
x = t.Optional(t.Exactly("x"))
self.assertEqual(writeBytecode(x),
[t.Choice(3),
t.Match('x'),
t.Commit(2),
t.Python("None")])
def test_not(self):
x = t.Not(t.Exactly("x"))
self.assertEqual(writeBytecode(x),
[t.Choice(4),
t.Match('x'),
t.Commit(1),
t.Fail()])
# self.assertEqual(writeBytecode(x),
# [t.Choice(3),
# t.Match('x'),
# t.FailTwice()])
def test_lookahead(self):
x = t.Lookahead(t.Exactly("x"))
self.assertEqual(writeBytecode(x),
[t.Choice(7),
t.Choice(4),
t.Match('x'),
t.Commit(1),
t.Fail(),
t.Commit(1),
t.Fail()])
# self.assertEqual(writeBytecode(x),
# [t.Choice(5),
# t.Choice(2),
# t.Match('x'),
# t.Commit(1),
# t.Fail()])
def test_sequence(self):
x = t.Exactly("x")
y = t.Exactly("y")
z = t.And([x, y])
self.assertEqual(writeBytecode(z),
[t.Match('x'),
t.Match('y')])
def test_bind(self):
x = t.Exactly("x")
b = t.Bind("var", x)
self.assertEqual(writeBytecode(b),
[t.Match('x'),
t.Bind('var')])
def test_bind_apply(self):
x = t.Apply("members", "object", [])
b = t.Bind("m", x)
self.assertEqual(writeBytecode(b),
[t.Call('members'),
t.Bind('m')])
def test_pred(self):
x = t.Predicate(t.Action("doStuff()"))
self.assertEqual(writeBytecode(x),
[t.Python('doStuff()'),
t.Predicate()])
def test_listpattern(self):
x = t.List(t.Exactly("x"))
self.assertEqual(writeBytecode(x),
[t.Descend(),
t.Match('x'),
t.Ascend()])
def test_rule(self):
x = t.Rule("foo", t.Exactly("x"))
k, v = writeBytecodeRule(x)
self.assertEqual(k, "foo")
self.assertEqual(v, [t.Match('x')])
def test_grammar(self):
r1 = t.Rule("foo", t.Exactly("x"))
r2 = t.Rule("baz", t.Exactly("y"))
x = t.Grammar("BuilderTest", False, [r1, r2])
g = writeBytecodeGrammar(x)
self.assertEqual(sorted(g.keys()), ['baz', 'foo'])
self.assertEqual(g['foo'], [t.Match('x')])
self.assertEqual(g['baz'], [t.Match('y')])
def test_repeat(self):
x = t.Repeat(3, 4, t.Exactly('x'))
self.assertEqual(writeBytecode(x),
[t.Python("3"),
t.Push(),
t.Python("4"),
t.Push(),
t.RepeatChoice(3),
t.Match('x'),
t.Commit(-2)])
def test_consumedby(self):
x = t.ConsumedBy(t.Exactly('x'))
self.assertEqual(writeBytecode(x),
[t.StartSlice(),
t.Match('x'),
t.EndSlice()])
|
