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Lib/site-packages/pipenv/vendor/tomlkit/toml_char.py

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+import string
+
+from ._compat import PY2
+from ._compat import unicode
+
+if PY2:
+    from pipenv.vendor.backports.functools_lru_cache import lru_cache
+else:
+    from functools import lru_cache
+
+
+class TOMLChar(unicode):
+    def __init__(self, c):
+        super(TOMLChar, self).__init__()
+
+        if len(self) > 1:
+            raise ValueError("A TOML character must be of length 1")
+
+    BARE = string.ascii_letters + string.digits + "-_"
+    KV = "= \t"
+    NUMBER = string.digits + "+-_.e"
+    SPACES = " \t"
+    NL = "\n\r"
+    WS = SPACES + NL
+
+    @lru_cache(maxsize=None)
+    def is_bare_key_char(self):  # type: () -> bool
+        """
+        Whether the character is a valid bare key name or not.
+        """
+        return self in self.BARE
+
+    @lru_cache(maxsize=None)
+    def is_kv_sep(self):  # type: () -> bool
+        """
+        Whether the character is a valid key/value separator ot not.
+        """
+        return self in self.KV
+
+    @lru_cache(maxsize=None)
+    def is_int_float_char(self):  # type: () -> bool
+        """
+        Whether the character if a valid integer or float value character or not.
+        """
+        return self in self.NUMBER
+
+    @lru_cache(maxsize=None)
+    def is_ws(self):  # type: () -> bool
+        """
+        Whether the character is a whitespace character or not.
+        """
+        return self in self.WS
+
+    @lru_cache(maxsize=None)
+    def is_nl(self):  # type: () -> bool
+        """
+        Whether the character is a new line character or not.
+        """
+        return self in self.NL
+
+    @lru_cache(maxsize=None)
+    def is_spaces(self):  # type: () -> bool
+        """
+        Whether the character is a space or not
+        """
+        return self in self.SPACES