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import os
from pathlib import Path
from clang.cindex import (
Config,
Cursor,
File,
SourceLocation,
SourceRange,
TranslationUnit,
)
if "CLANG_LIBRARY_PATH" in os.environ:
Config.set_library_path(os.environ["CLANG_LIBRARY_PATH"])
import unittest
from .util import get_cursor, get_tu
INPUTS_DIR = Path(__file__).parent / "INPUTS"
BASE_INPUT = "int one;\nint two;\n"
class TestLocation(unittest.TestCase):
def assert_location(self, loc, line, column, offset):
self.assertEqual(loc.line, line)
self.assertEqual(loc.column, column)
self.assertEqual(loc.offset, offset)
def test_location(self):
tu = get_tu(BASE_INPUT)
one = get_cursor(tu, "one")
two = get_cursor(tu, "two")
self.assertIsNotNone(one)
self.assertIsNotNone(two)
self.assert_location(one.location, line=1, column=5, offset=4)
self.assert_location(two.location, line=2, column=5, offset=13)
# adding a linebreak at top should keep columns same
tu = get_tu("\n" + BASE_INPUT)
one = get_cursor(tu, "one")
two = get_cursor(tu, "two")
self.assertIsNotNone(one)
self.assertIsNotNone(two)
self.assert_location(one.location, line=2, column=5, offset=5)
self.assert_location(two.location, line=3, column=5, offset=14)
# adding a space should affect column on first line only
tu = get_tu(" " + BASE_INPUT)
one = get_cursor(tu, "one")
two = get_cursor(tu, "two")
self.assert_location(one.location, line=1, column=6, offset=5)
self.assert_location(two.location, line=2, column=5, offset=14)
# define the expected location ourselves and see if it matches
# the returned location
tu = get_tu(BASE_INPUT)
file = File.from_name(tu, "t.c")
location = SourceLocation.from_position(tu, file, 1, 5)
cursor = Cursor.from_location(tu, location)
one = get_cursor(tu, "one")
self.assertIsNotNone(one)
self.assertEqual(one, cursor)
# Ensure locations referring to the same entity are equivalent.
location2 = SourceLocation.from_position(tu, file, 1, 5)
self.assertEqual(location, location2)
location3 = SourceLocation.from_position(tu, file, 1, 4)
self.assertNotEqual(location2, location3)
offset_location = SourceLocation.from_offset(tu, file, 5)
cursor = Cursor.from_location(tu, offset_location)
verified = False
for n in [n for n in tu.cursor.get_children() if n.spelling == "one"]:
self.assertEqual(n, cursor)
verified = True
self.assertTrue(verified)
def test_extent(self):
tu = get_tu(BASE_INPUT)
one = get_cursor(tu, "one")
two = get_cursor(tu, "two")
self.assert_location(one.extent.start, line=1, column=1, offset=0)
self.assert_location(one.extent.end, line=1, column=8, offset=7)
self.assertEqual(
BASE_INPUT[one.extent.start.offset : one.extent.end.offset], "int one"
)
self.assert_location(two.extent.start, line=2, column=1, offset=9)
self.assert_location(two.extent.end, line=2, column=8, offset=16)
self.assertEqual(
BASE_INPUT[two.extent.start.offset : two.extent.end.offset], "int two"
)
file = File.from_name(tu, "t.c")
location1 = SourceLocation.from_position(tu, file, 1, 1)
location2 = SourceLocation.from_position(tu, file, 1, 8)
range1 = SourceRange.from_locations(location1, location2)
range2 = SourceRange.from_locations(location1, location2)
self.assertEqual(range1, range2)
location3 = SourceLocation.from_position(tu, file, 1, 6)
range3 = SourceRange.from_locations(location1, location3)
self.assertNotEqual(range1, range3)
def test_is_system_location(self):
header = os.path.normpath("./fake/fake.h")
tu = TranslationUnit.from_source(
"fake.c",
[f"-isystem{os.path.dirname(header)}"],
unsaved_files=[
(
"fake.c",
"""
#include <fake.h>
int one;
""",
),
(header, "int two();"),
],
)
one = get_cursor(tu, "one")
two = get_cursor(tu, "two")
self.assertFalse(one.location.is_in_system_header)
self.assertTrue(two.location.is_in_system_header)
def test_operator_lt(self):
tu = get_tu("aaaaa")
t1_f = tu.get_file(tu.spelling)
tu2 = get_tu("aaaaa")
l_t1_12 = SourceLocation.from_position(tu, t1_f, 1, 2)
l_t1_13 = SourceLocation.from_position(tu, t1_f, 1, 3)
l_t1_14 = SourceLocation.from_position(tu, t1_f, 1, 4)
l_t2_13 = SourceLocation.from_position(tu2, tu2.get_file(tu2.spelling), 1, 3)
# In same file
assert l_t1_12 < l_t1_13 < l_t1_14
assert not l_t1_13 < l_t1_12
# In same file, different TU
assert l_t1_12 < l_t2_13 < l_t1_14
assert not l_t2_13 < l_t1_12
assert not l_t1_14 < l_t2_13
def test_equality(self):
path = INPUTS_DIR / "testfile.c"
path_a = INPUTS_DIR / "a.inc"
tu = TranslationUnit.from_source(path)
main_file = File.from_name(tu, path)
a_file = File.from_name(tu, path_a)
location1 = SourceLocation.from_position(tu, main_file, 1, 3)
location2 = SourceLocation.from_position(tu, main_file, 2, 2)
location1_2 = SourceLocation.from_position(tu, main_file, 1, 3)
file2_location1 = SourceLocation.from_position(tu, a_file, 1, 3)
self.assertEqual(location1, location1)
self.assertEqual(location1, location1_2)
self.assertNotEqual(location1, location2)
self.assertNotEqual(location1, file2_location1)
self.assertNotEqual(location1, "foo")
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