bpo-40939: Remove the old parser (GH-20768)

This commit removes the old parser, the deprecated parser module, the old parser compatibility flags and environment variables and all associated support code and documentation.

1 files changed, 0 insertions, 38 deletions

diff --git a/Parser/pgen/token.py b/Parser/pgen/token.py
deleted file mode 100644
index 2cff62ce3b..0000000000
--- a/Parser/pgen/token.py
+++ /dev/null
@@ -1,38 +0,0 @@
-import itertools
-
-
-def generate_tokens(tokens):
-    numbers = itertools.count(0)
-    for line in tokens:
-        line = line.strip()
-
-        if not line or line.startswith("#"):
-            continue
-
-        name = line.split()[0]
-        yield (name, next(numbers))
-
-    yield ("N_TOKENS", next(numbers))
-    yield ("NT_OFFSET", 256)
-
-
-def generate_opmap(tokens):
-    for line in tokens:
-        line = line.strip()
-
-        if not line or line.startswith("#"):
-            continue
-
-        pieces = line.split()
-
-        if len(pieces) != 2:
-            continue
-
-        name, op = pieces
-        yield (op.strip("'"), name)
-
-    # Yield independently <>. This is needed so it does not collide
-    # with the token generation in "generate_tokens" because if this
-    # symbol is included in Grammar/Tokens, it will collide with !=
-    # as it has the same name (NOTEQUAL).
-    yield ("<>", "NOTEQUAL")