132 lines
4.4 KiB
Python
132 lines
4.4 KiB
Python
import os
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from clang.cindex import Config
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if "CLANG_LIBRARY_PATH" in os.environ:
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Config.set_library_path(os.environ["CLANG_LIBRARY_PATH"])
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from clang.cindex import Cursor
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from clang.cindex import File
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from clang.cindex import SourceLocation
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from clang.cindex import SourceRange
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from clang.cindex import TranslationUnit
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from .util import get_cursor
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from .util import get_tu
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import unittest
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baseInput = "int one;\nint two;\n"
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class TestLocation(unittest.TestCase):
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def assert_location(self, loc, line, column, offset):
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self.assertEqual(loc.line, line)
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self.assertEqual(loc.column, column)
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self.assertEqual(loc.offset, offset)
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def test_location(self):
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tu = get_tu(baseInput)
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one = get_cursor(tu, "one")
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two = get_cursor(tu, "two")
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self.assertIsNotNone(one)
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self.assertIsNotNone(two)
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self.assert_location(one.location, line=1, column=5, offset=4)
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self.assert_location(two.location, line=2, column=5, offset=13)
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# adding a linebreak at top should keep columns same
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tu = get_tu("\n" + baseInput)
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one = get_cursor(tu, "one")
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two = get_cursor(tu, "two")
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self.assertIsNotNone(one)
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self.assertIsNotNone(two)
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self.assert_location(one.location, line=2, column=5, offset=5)
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self.assert_location(two.location, line=3, column=5, offset=14)
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# adding a space should affect column on first line only
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tu = get_tu(" " + baseInput)
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one = get_cursor(tu, "one")
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two = get_cursor(tu, "two")
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self.assert_location(one.location, line=1, column=6, offset=5)
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self.assert_location(two.location, line=2, column=5, offset=14)
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# define the expected location ourselves and see if it matches
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# the returned location
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tu = get_tu(baseInput)
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file = File.from_name(tu, "t.c")
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location = SourceLocation.from_position(tu, file, 1, 5)
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cursor = Cursor.from_location(tu, location)
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one = get_cursor(tu, "one")
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self.assertIsNotNone(one)
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self.assertEqual(one, cursor)
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# Ensure locations referring to the same entity are equivalent.
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location2 = SourceLocation.from_position(tu, file, 1, 5)
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self.assertEqual(location, location2)
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location3 = SourceLocation.from_position(tu, file, 1, 4)
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self.assertNotEqual(location2, location3)
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offset_location = SourceLocation.from_offset(tu, file, 5)
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cursor = Cursor.from_location(tu, offset_location)
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verified = False
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for n in [n for n in tu.cursor.get_children() if n.spelling == "one"]:
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self.assertEqual(n, cursor)
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verified = True
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self.assertTrue(verified)
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def test_extent(self):
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tu = get_tu(baseInput)
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one = get_cursor(tu, "one")
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two = get_cursor(tu, "two")
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self.assert_location(one.extent.start, line=1, column=1, offset=0)
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self.assert_location(one.extent.end, line=1, column=8, offset=7)
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self.assertEqual(
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baseInput[one.extent.start.offset : one.extent.end.offset], "int one"
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)
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self.assert_location(two.extent.start, line=2, column=1, offset=9)
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self.assert_location(two.extent.end, line=2, column=8, offset=16)
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self.assertEqual(
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baseInput[two.extent.start.offset : two.extent.end.offset], "int two"
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)
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file = File.from_name(tu, "t.c")
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location1 = SourceLocation.from_position(tu, file, 1, 1)
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location2 = SourceLocation.from_position(tu, file, 1, 8)
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range1 = SourceRange.from_locations(location1, location2)
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range2 = SourceRange.from_locations(location1, location2)
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self.assertEqual(range1, range2)
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location3 = SourceLocation.from_position(tu, file, 1, 6)
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range3 = SourceRange.from_locations(location1, location3)
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self.assertNotEqual(range1, range3)
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def test_is_system_location(self):
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header = os.path.normpath("./fake/fake.h")
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tu = TranslationUnit.from_source(
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"fake.c",
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[f"-isystem{os.path.dirname(header)}"],
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unsaved_files=[
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(
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"fake.c",
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"""
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#include <fake.h>
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int one;
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""",
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),
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(header, "int two();"),
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],
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)
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one = get_cursor(tu, "one")
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two = get_cursor(tu, "two")
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self.assertFalse(one.location.is_in_system_header)
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self.assertTrue(two.location.is_in_system_header)
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