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# Copyright (c) 2018-2019 by Rocky Bernstein
#
# This program is free software: you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program. If not, see <http://www.gnu.org/licenses/>.
"""Isolate Python version-specific semantic actions here.
"""
from uncompyle6.semantics.consts import TABLE_R, TABLE_DIRECT
from uncompyle6.parsers.treenode import SyntaxTree
from uncompyle6.scanners.tok import Token
def customize_for_version(self, is_pypy, version):
if is_pypy:
########################
# PyPy changes
#######################
TABLE_DIRECT.update(
{
"assert2_pypy": ("%|assert %c, %c\n", (1, "assert_expr"), 4),
"assert_pypy": ("%|assert %c\n", (1, "assert_expr")),
"assign2_pypy": ("%|%c, %c = %c, %c\n", 3, 2, 0, 1),
"assign3_pypy": ("%|%c, %c, %c = %c, %c, %c\n", 5, 4, 3, 0, 1, 2),
"try_except_pypy": ("%|try:\n%+%c%-%c\n\n", 1, 2),
"tryfinallystmt_pypy": ("%|try:\n%+%c%-%|finally:\n%+%c%-\n\n", 1, 3),
}
)
else:
########################
# Without PyPy
#######################
TABLE_DIRECT.update(
{
"assert": ("%|assert %c\n", (0, "assert_expr")),
"assert2": ("%|assert %c, %c\n", (0, "assert_expr"), 3),
"assign2": ("%|%c, %c = %c, %c\n", 3, 4, 0, 1),
"assign3": ("%|%c, %c, %c = %c, %c, %c\n", 5, 6, 7, 0, 1, 2),
"try_except": ("%|try:\n%+%c%-%c\n\n", 1, 3),
}
)
if version >= 3.0:
if version >= 3.2:
TABLE_DIRECT.update(
{"del_deref_stmt": ("%|del %c\n", 0), "DELETE_DEREF": ("%{pattr}", 0)}
)
from uncompyle6.semantics.customize3 import customize_for_version3
customize_for_version3(self, version)
else: # < 3.0
TABLE_DIRECT.update(
{"except_cond3": ("%|except %c, %c:\n", (1, "expr"), (-2, "store"))}
)
if 2.4 <= version <= 2.6:
TABLE_DIRECT.update({"comp_for": (" for %c in %c", 3, 1)})
else:
TABLE_DIRECT.update({"comp_for": (" for %c in %c%c", 2, 0, 3)})
if version >= 2.5:
from uncompyle6.semantics.customize25 import customize_for_version25
customize_for_version25(self, version)
if version >= 2.6:
from uncompyle6.semantics.customize26_27 import (
customize_for_version26_27,
)
customize_for_version26_27(self, version)
pass
else: # < 2.5
global NAME_MODULE
NAME_MODULE = SyntaxTree(
"stmt",
[
SyntaxTree(
"assign",
[
SyntaxTree(
"expr",
[
Token(
"LOAD_GLOBAL",
pattr="__name__",
offset=0,
has_arg=True,
)
],
),
SyntaxTree(
"store",
[
Token(
"STORE_NAME",
pattr="__module__",
offset=3,
has_arg=True,
)
],
),
],
)
],
)
TABLE_DIRECT.update(
{
"importmultiple": ("%|import %c%c\n", 2, 3),
"import_cont": (", %c", 2),
"tryfinallystmt": (
"%|try:\n%+%c%-%|finally:\n%+%c%-",
(1, "suite_stmts_opt"),
(5, "suite_stmts_opt"),
),
}
)
if version == 2.4:
def n_iftrue_stmt24(node):
self.template_engine(("%c", 0), node)
self.default(node)
self.prune()
self.n_iftrue_stmt24 = n_iftrue_stmt24
else: # version <= 2.3:
TABLE_DIRECT.update({"if1_stmt": ("%|if 1\n%+%c%-", 5)})
if version <= 2.1:
TABLE_DIRECT.update(
{
"importmultiple": ("%c", 2),
# FIXME: not quite right. We have indiividual imports
# when there is in fact one: "import a, b, ..."
"imports_cont": ("%C%,", (1, 100, "\n")),
}
)
pass
pass
pass # < 2.5
# < 3.0 continues
TABLE_R.update(
{
"STORE_SLICE+0": ("%c[:]", 0),
"STORE_SLICE+1": ("%c[%p:]", 0, (1, -1)),
"STORE_SLICE+2": ("%c[:%p]", 0, (1, -1)),
"STORE_SLICE+3": ("%c[%p:%p]", 0, (1, -1), (2, -1)),
"DELETE_SLICE+0": ("%|del %c[:]\n", 0),
"DELETE_SLICE+1": ("%|del %c[%c:]\n", 0, 1),
"DELETE_SLICE+2": ("%|del %c[:%c]\n", 0, 1),
"DELETE_SLICE+3": ("%|del %c[%c:%c]\n", 0, 1, 2),
}
)
TABLE_DIRECT.update({"raise_stmt2": ("%|raise %c, %c\n", 0, 1)})
# exec as a built-in statement is only in Python 2.x
def n_exec_stmt(node):
"""
exec_stmt ::= expr exprlist DUP_TOP EXEC_STMT
exec_stmt ::= expr exprlist EXEC_STMT
"""
self.write(self.indent, "exec ")
self.preorder(node[0])
if not node[1][0].isNone():
sep = " in "
for subnode in node[1]:
self.write(sep)
sep = ", "
self.preorder(subnode)
self.println()
self.prune() # stop recursing
self.n_exec_smt = n_exec_stmt
pass # < 3.0
return