Python: Copy Python extractor to codeql repo

python/extractor/tests/parser/strings.py

@@ -0,0 +1,79 @@
+if 1:
+    "double quotes"
+if 2:
+    'single quotes'
+if 3:
+    """triple double quotes (sextuple quotes?)"""
+if 4:
+    '''triple single quotes'''
+if 5:
+    r"raw string"
+if 6:
+    b"byte string"
+if 7:
+    u"unicode string"
+if 8:
+    br"raw byte string"
+if 9:
+    "Let's put some control\tcharacters in here\n"
+if 10:
+    """
+    Multiline
+    string
+    time
+    """
+if 11:
+    "escaped \"quotes\" here"
+if 12:
+    """Unescaped "quotes" inside triple quotes"""
+if 13:
+    "string" """concatenation""" 'here' '''oh yeah'''
+if 14:
+    f"format string with no funny business"
+if 15:
+    f"format string with {1} interpolation"
+if 16:
+    f"{2}{3}{4}"
+if 17:
+    f"and a format string with {'nested'} string"
+if 18:
+    f"foo{x}bar" "regular string"
+if 19:
+    pass
+    # This doesn't quite give the right result, but it's close enough.
+    #f"no interpolation" ' but still implicit concatenation'
+if 20:
+    f"{9}" "blah" f'{10}'
+if 21:
+    f"format{129}string" "not format"
+if 21.1:
+    # regression from https://github.com/github/codeql/issues/9940
+    f"format{123}string" f"technically format string\n"
+if 22:
+    "again not format" f"format again{foo}hello"
+if 23:
+    f"""f-string with {"inner " 'implicit ' '''concatenation'''} how awful"""
+if 24:
+    f'''oh no python { f'why do you {"allow"} such'} absolute horrors?'''
+if 25:
+    b"""5""" b"byte format"
+if 26:
+    r'X(\u0061|a)*Y'
+if 27:
+    f"""triple-quoted {11}""f-st""" fr"""ri'''ng\\\\\""{12} with an inner quoted part"""
+if 28:
+    f'{value:{width + padding!r}.{precision}}'
+if 29:
+    f'{1,}'
+if 30:
+    fr"""quotes before interpolation "{123}" are okay."""
+if 31:
+    fr"""backslash before an interpolation \{456}\ are okay."""
+if 32:
+    f''
+if 33:
+    ''
+if 34:
+    b'\xc5\xe5'
+if 35:
+    f"{x=}"