Add token lib

Author: nagayev

grumpy-runtime-src/lib/token.py

@@ -0,0 +1,143 @@
+"""Token constants (from "token.h")."""
+
+__all__ = ['tok_name', 'ISTERMINAL', 'ISNONTERMINAL', 'ISEOF']
+
+#  This file is automatically generated; please don't muck it up!
+#
+#  To update the symbols in this file, 'cd' to the top directory of
+#  the python source tree after building the interpreter and run:
+#
+#    ./python Lib/token.py
+
+#--start constants--
+ENDMARKER = 0
+NAME = 1
+NUMBER = 2
+STRING = 3
+NEWLINE = 4
+INDENT = 5
+DEDENT = 6
+LPAR = 7
+RPAR = 8
+LSQB = 9
+RSQB = 10
+COLON = 11
+COMMA = 12
+SEMI = 13
+PLUS = 14
+MINUS = 15
+STAR = 16
+SLASH = 17
+VBAR = 18
+AMPER = 19
+LESS = 20
+GREATER = 21
+EQUAL = 22
+DOT = 23
+PERCENT = 24
+LBRACE = 25
+RBRACE = 26
+EQEQUAL = 27
+NOTEQUAL = 28
+LESSEQUAL = 29
+GREATEREQUAL = 30
+TILDE = 31
+CIRCUMFLEX = 32
+LEFTSHIFT = 33
+RIGHTSHIFT = 34
+DOUBLESTAR = 35
+PLUSEQUAL = 36
+MINEQUAL = 37
+STAREQUAL = 38
+SLASHEQUAL = 39
+PERCENTEQUAL = 40
+AMPEREQUAL = 41
+VBAREQUAL = 42
+CIRCUMFLEXEQUAL = 43
+LEFTSHIFTEQUAL = 44
+RIGHTSHIFTEQUAL = 45
+DOUBLESTAREQUAL = 46
+DOUBLESLASH = 47
+DOUBLESLASHEQUAL = 48
+AT = 49
+ATEQUAL = 50
+RARROW = 51
+ELLIPSIS = 52
+OP = 53
+AWAIT = 54
+ASYNC = 55
+ERRORTOKEN = 56
+N_TOKENS = 57
+NT_OFFSET = 256
+#--end constants--
+
+tok_name = {value: name
+            for name, value in globals().items()
+            if isinstance(value, int) and not name.startswith('_')}
+__all__.extend(tok_name.values())
+
+def ISTERMINAL(x):
+    return x < NT_OFFSET
+
+def ISNONTERMINAL(x):
+    return x >= NT_OFFSET
+
+def ISEOF(x):
+    return x == ENDMARKER
+
+
+def __main():
+    import re
+    import sys
+    args = sys.argv[1:]
+    inFileName = args and args[0] or "Include/token.h"
+    outFileName = "Lib/token.py"
+    if len(args) > 1:
+        outFileName = args[1]
+    try:
+        fp = open(inFileName)
+    except OSError as err:
+        sys.stdout.write("I/O error: %s\n" % str(err))
+        sys.exit(1)
+    with fp:
+        lines = fp.read().split("\n")
+    prog = re.compile(
+        "#define[ \t][ \t]*([A-Z0-9][A-Z0-9_]*)[ \t][ \t]*([0-9][0-9]*)",
+        re.IGNORECASE)
+    tokens = {}
+    for line in lines:
+        match = prog.match(line)
+        if match:
+            name, val = match.group(1, 2)
+            val = int(val)
+            tokens[val] = name          # reverse so we can sort them...
+    keys = sorted(tokens.keys())
+    # load the output skeleton from the target:
+    try:
+        fp = open(outFileName)
+    except OSError as err:
+        sys.stderr.write("I/O error: %s\n" % str(err))
+        sys.exit(2)
+    with fp:
+        format = fp.read().split("\n")
+    try:
+        start = format.index("#--start constants--") + 1
+        end = format.index("#--end constants--")
+    except ValueError:
+        sys.stderr.write("target does not contain format markers")
+        sys.exit(3)
+    lines = []
+    for val in keys:
+        lines.append("%s = %d" % (tokens[val], val))
+    format[start:end] = lines
+    try:
+        fp = open(outFileName, 'w')
+    except OSError as err:
+        sys.stderr.write("I/O error: %s\n" % str(err))
+        sys.exit(4)
+    with fp:
+        fp.write("\n".join(format))
+
+
+if __name__ == "__main__":
+    __main()