Adding cython v0.20.2 in third-party.

third_party/cython/src/Cython/Compiler/Lexicon.py

Index: third_party/cython/src/Cython/Compiler/Lexicon.py
diff --git a/third_party/cython/src/Cython/Compiler/Lexicon.py b/third_party/cython/src/Cython/Compiler/Lexicon.py
new file mode 100644
index 0000000000000000000000000000000000000000..51fd9ccf252920bdc00311bd71c3a99bc200e6c9
--- /dev/null
+++ b/third_party/cython/src/Cython/Compiler/Lexicon.py
@@ -0,0 +1,134 @@
+# cython: language_level=3, py2_import=True
+#
+#   Cython Scanner - Lexical Definitions
+#
+
+raw_prefixes = "rR"
+bytes_prefixes = "bB"
+string_prefixes = "uU" + bytes_prefixes
+char_prefixes = "cC"
+any_string_prefix = raw_prefixes + string_prefixes + char_prefixes
+IDENT = 'IDENT'
+
+def make_lexicon():
+    from Cython.Plex import \
+        Str, Any, AnyBut, AnyChar, Rep, Rep1, Opt, Bol, Eol, Eof, \
+        TEXT, IGNORE, State, Lexicon
+    from Scanning import Method
+
+    letter = Any("ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz_")
+    digit = Any("0123456789")
+    bindigit = Any("01")
+    octdigit = Any("01234567")
+    hexdigit = Any("0123456789ABCDEFabcdef")
+    indentation = Bol + Rep(Any(" \t"))
+
+    decimal = Rep1(digit)
+    dot = Str(".")
+    exponent = Any("Ee") + Opt(Any("+-")) + decimal
+    decimal_fract = (decimal + dot + Opt(decimal)) | (dot + decimal)
+
+    name = letter + Rep(letter | digit)
+    intconst = decimal | (Str("0") + ((Any("Xx") + Rep1(hexdigit)) |
+                                      (Any("Oo") + Rep1(octdigit)) |
+                                      (Any("Bb") + Rep1(bindigit)) ))
+    intsuffix = (Opt(Any("Uu")) + Opt(Any("Ll")) + Opt(Any("Ll"))) | (Opt(Any("Ll")) + Opt(Any("Ll")) + Opt(Any("Uu")))
+    intliteral = intconst + intsuffix
+    fltconst = (decimal_fract + Opt(exponent)) | (decimal + exponent)
+    imagconst = (intconst | fltconst) + Any("jJ")
+
+    beginstring = Opt(Any(string_prefixes) + Opt(Any(raw_prefixes)) |
+                      Any(raw_prefixes) + Opt(Any(bytes_prefixes)) |
+                      Any(char_prefixes)
+                      ) + (Str("'") | Str('"') | Str("'''") | Str('"""'))
+    two_oct = octdigit + octdigit
+    three_oct = octdigit + octdigit + octdigit
+    two_hex = hexdigit + hexdigit
+    four_hex = two_hex + two_hex
+    escapeseq = Str("\\") + (two_oct | three_oct |
+                             Str('N{') + Rep(AnyBut('}')) + Str('}') |
+                             Str('u') + four_hex | Str('x') + two_hex |
+                             Str('U') + four_hex + four_hex | AnyChar)
+
+    deco = Str("@")
+    bra = Any("([{")
+    ket = Any(")]}")
+    punct = Any(":,;+-*/|&<>=.%`~^?!")
+    diphthong = Str("==", "<>", "!=", "<=", ">=", "<<", ">>", "**", "//",
+                    "+=", "-=", "*=", "/=", "%=", "|=", "^=", "&=",
+                    "<<=", ">>=", "**=", "//=", "->")
+    spaces = Rep1(Any(" \t\f"))
+    escaped_newline = Str("\\\n")
+    lineterm = Eol + Opt(Str("\n"))
+
+    comment = Str("#") + Rep(AnyBut("\n"))
+
+    return Lexicon([
+        (name, IDENT),
+        (intliteral, 'INT'),
+        (fltconst, 'FLOAT'),
+        (imagconst, 'IMAG'),
+        (deco, 'DECORATOR'),
+        (punct | diphthong, TEXT),
+
+        (bra, Method('open_bracket_action')),
+        (ket, Method('close_bracket_action')),
+        (lineterm, Method('newline_action')),
+
+        (beginstring, Method('begin_string_action')),
+
+        (comment, IGNORE),
+        (spaces, IGNORE),
+        (escaped_newline, IGNORE),
+
+        State('INDENT', [
+            (comment + lineterm, Method('commentline')),
+            (Opt(spaces) + Opt(comment) + lineterm, IGNORE),
+            (indentation, Method('indentation_action')),
+            (Eof, Method('eof_action'))
+        ]),
+
+        State('SQ_STRING', [
+            (escapeseq, 'ESCAPE'),
+            (Rep1(AnyBut("'\"\n\\")), 'CHARS'),
+            (Str('"'), 'CHARS'),
+            (Str("\n"), Method('unclosed_string_action')),
+            (Str("'"), Method('end_string_action')),
+            (Eof, 'EOF')
+        ]),
+
+        State('DQ_STRING', [
+            (escapeseq, 'ESCAPE'),
+            (Rep1(AnyBut('"\n\\')), 'CHARS'),
+            (Str("'"), 'CHARS'),
+            (Str("\n"), Method('unclosed_string_action')),
+            (Str('"'), Method('end_string_action')),
+            (Eof, 'EOF')
+        ]),
+
+        State('TSQ_STRING', [
+            (escapeseq, 'ESCAPE'),
+            (Rep1(AnyBut("'\"\n\\")), 'CHARS'),
+            (Any("'\""), 'CHARS'),
+            (Str("\n"), 'NEWLINE'),
+            (Str("'''"), Method('end_string_action')),
+            (Eof, 'EOF')
+        ]),
+
+        State('TDQ_STRING', [
+            (escapeseq, 'ESCAPE'),
+            (Rep1(AnyBut('"\'\n\\')), 'CHARS'),
+            (Any("'\""), 'CHARS'),
+            (Str("\n"), 'NEWLINE'),
+            (Str('"""'), Method('end_string_action')),
+            (Eof, 'EOF')
+        ]),
+
+        (Eof, Method('eof_action'))
+        ],
+
+        # FIXME: Plex 1.9 needs different args here from Plex 1.1.4
+        #debug_flags = scanner_debug_flags,
+        #debug_file = scanner_dump_file
+        )
+