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from __future__ import with_statement
import py
from rpython.rlib.rstring import StringBuilder, UnicodeBuilder
from rpython.rtyper.annlowlevel import llstr, hlstr, llunicode, hlunicode
from rpython.rtyper.lltypesystem import rffi
from rpython.rtyper.lltypesystem.rbuilder import StringBuilderRepr, UnicodeBuilderRepr
from rpython.rtyper.test.tool import BaseRtypingTest
class TestStringBuilderDirect(object):
def test_nooveralloc(self):
sb = StringBuilderRepr.ll_new(33)
StringBuilderRepr.ll_append(sb, llstr("abc" * 11))
assert StringBuilderRepr.ll_getlength(sb) == 33
s = StringBuilderRepr.ll_build(sb)
assert hlstr(s) == "abc" * 11
assert StringBuilderRepr.ll_getlength(sb) == 33
def test_shrinking(self):
sb = StringBuilderRepr.ll_new(100)
StringBuilderRepr.ll_append(sb, llstr("abc" * 11))
assert StringBuilderRepr.ll_getlength(sb) == 33
s = StringBuilderRepr.ll_build(sb)
assert hlstr(s) == "abc" * 11
assert StringBuilderRepr.ll_getlength(sb) == 33
def test_simple(self):
sb = StringBuilderRepr.ll_new(3)
assert StringBuilderRepr.ll_getlength(sb) == 0
StringBuilderRepr.ll_append_char(sb, 'x')
assert StringBuilderRepr.ll_getlength(sb) == 1
StringBuilderRepr.ll_append(sb, llstr("abc"))
assert StringBuilderRepr.ll_getlength(sb) == 4
StringBuilderRepr.ll_append_slice(sb, llstr("foobar"), 2, 5)
assert StringBuilderRepr.ll_getlength(sb) == 7
StringBuilderRepr.ll_append_multiple_char(sb, 'y', 3)
assert StringBuilderRepr.ll_getlength(sb) == 10
s = StringBuilderRepr.ll_build(sb)
assert hlstr(s) == "xabcobayyy"
assert StringBuilderRepr.ll_getlength(sb) == 10
def test_grow_when_append_char(self):
sb = StringBuilderRepr.ll_new(33)
StringBuilderRepr.ll_append(sb, llstr("abc" * 11))
StringBuilderRepr.ll_append_char(sb, "d")
s = StringBuilderRepr.ll_build(sb)
assert hlstr(s) == "abc" * 11 + "d"
def test_grow_two_halves(self):
sb = StringBuilderRepr.ll_new(32)
StringBuilderRepr.ll_append(sb, llstr("abc" * 11))
s = StringBuilderRepr.ll_build(sb)
assert hlstr(s) == "abc" * 11
def test_grow_when_exactly_full(self):
sb = StringBuilderRepr.ll_new(33)
StringBuilderRepr.ll_append(sb, llstr("abc" * 11))
StringBuilderRepr.ll_append(sb, llstr("def"))
s = StringBuilderRepr.ll_build(sb)
assert hlstr(s) == "abc" * 11 + "def"
def test_charp(self):
sb = StringBuilderRepr.ll_new(32)
with rffi.scoped_str2charp("hello world") as p:
StringBuilderRepr.ll_append_charpsize(sb, p, 12)
with rffi.scoped_str2charp("0123456789abcdefghijklmn") as p:
StringBuilderRepr.ll_append_charpsize(sb, p, 24)
s = StringBuilderRepr.ll_build(sb)
assert hlstr(s) == "hello world\x000123456789abcdefghijklmn"
def test_unicode(self):
sb = UnicodeBuilderRepr.ll_new(32)
UnicodeBuilderRepr.ll_append_char(sb, u'x')
UnicodeBuilderRepr.ll_append(sb, llunicode(u"abc"))
UnicodeBuilderRepr.ll_append_slice(sb, llunicode(u"foobar"), 2, 5)
UnicodeBuilderRepr.ll_append_multiple_char(sb, u'y', 30)
u = UnicodeBuilderRepr.ll_build(sb)
assert hlunicode(u) == u"xabcoba" + u"y" * 30
def test_several_builds(self):
sb = StringBuilderRepr.ll_new(32)
s = StringBuilderRepr.ll_build(sb)
assert hlstr(s) == ""
assert s == StringBuilderRepr.ll_build(sb)
assert s == StringBuilderRepr.ll_build(sb)
#
sb = StringBuilderRepr.ll_new(32)
StringBuilderRepr.ll_append(sb, llstr("abcdefgh" * 3)) # not full
s = StringBuilderRepr.ll_build(sb)
assert hlstr(s) == "abcdefgh" * 3
assert s == StringBuilderRepr.ll_build(sb)
assert s == StringBuilderRepr.ll_build(sb)
StringBuilderRepr.ll_append(sb, llstr("extra")) # overflow
s = StringBuilderRepr.ll_build(sb)
assert hlstr(s) == "abcdefgh" * 3 + "extra"
assert s == StringBuilderRepr.ll_build(sb)
assert s == StringBuilderRepr.ll_build(sb)
class TestStringBuilder(BaseRtypingTest):
def test_simple(self):
def func():
s = StringBuilder()
s.append("a")
s.append("abc")
s.append_slice("abc", 1, 2)
s.append_multiple_char('d', 4)
return s.build()
res = self.ll_to_string(self.interpret(func, []))
assert res == "aabcbdddd"
def test_overallocation(self):
def func():
s = StringBuilder(34)
s.append("abcd" * 5)
s.append("defg" * 5)
s.append("rty")
return s.build()
res = self.ll_to_string(self.interpret(func, []))
assert res == "abcd" * 5 + "defg" * 5 + "rty"
def test_unicode(self):
def func():
s = UnicodeBuilder(32)
s.append(u'a')
s.append(u'abc')
s.append(u'abcdef')
s.append_slice(u'abc', 1, 2)
s.append_multiple_char(u'u', 40)
return s.build()
res = self.ll_to_unicode(self.interpret(func, []))
assert res == u'aabcabcdefb' + u'u' * 40
assert isinstance(res, unicode)
def test_string_getlength(self):
def func():
s = StringBuilder()
s.append("a")
s.append("abc")
return s.getlength()
res = self.interpret(func, [])
assert res == 4
def test_unicode_getlength(self):
def func():
s = UnicodeBuilder()
s.append(u"a")
s.append(u"abc")
return s.getlength()
res = self.interpret(func, [])
assert res == 4
def test_append_charpsize(self):
def func(l):
s = StringBuilder()
with rffi.scoped_str2charp("hello world") as x:
s.append_charpsize(x, l)
return s.build()
res = self.ll_to_string(self.interpret(func, [5]))
assert res == "hello"
def test_builder_or_none(self):
def g(s):
if s:
s.append("3")
return bool(s)
def func(i):
if i:
s = StringBuilder()
else:
s = None
return g(s)
res = self.interpret(func, [0])
assert not res
res = self.interpret(func, [1])
assert res
def test_unicode_builder_or_none(self):
def g(s):
if s:
s.append(u"3")
return bool(s)
def func(i):
if i:
s = UnicodeBuilder()
else:
s = None
return g(s)
res = self.interpret(func, [0])
assert not res
res = self.interpret(func, [1])
assert res
def test_prebuilt_string_builder(self):
s = StringBuilder(100)
s.append("abc")
def f():
return len(s.build())
res = self.interpret(f, [])
assert res == 3
def test_prebuilt_unicode_builder(self):
s = UnicodeBuilder(100)
s.append(u"abc")
def f():
return len(s.build())
res = self.interpret(f, [])
assert res == 3
def test_string_builder_union(self):
s = StringBuilder()
def f(i):
if i % 2:
s2 = StringBuilder()
else:
s2 = s
return s2.build()
self.interpret(f, [3])
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