diff options
Diffstat (limited to '.venv/lib/python3.12/site-packages/libfuturize/fixes/fix_print.py')
-rw-r--r-- | .venv/lib/python3.12/site-packages/libfuturize/fixes/fix_print.py | 104 |
1 files changed, 104 insertions, 0 deletions
diff --git a/.venv/lib/python3.12/site-packages/libfuturize/fixes/fix_print.py b/.venv/lib/python3.12/site-packages/libfuturize/fixes/fix_print.py new file mode 100644 index 00000000..2554717c --- /dev/null +++ b/.venv/lib/python3.12/site-packages/libfuturize/fixes/fix_print.py @@ -0,0 +1,104 @@ +# Copyright 2006 Google, Inc. All Rights Reserved. +# Licensed to PSF under a Contributor Agreement. + +"""Fixer for print. + +Change: + "print" into "print()" + "print ..." into "print(...)" + "print(...)" not changed + "print ... ," into "print(..., end=' ')" + "print >>x, ..." into "print(..., file=x)" + +No changes are applied if print_function is imported from __future__ + +""" + +# Local imports +from lib2to3 import patcomp, pytree, fixer_base +from lib2to3.pgen2 import token +from lib2to3.fixer_util import Name, Call, Comma, String +# from libmodernize import add_future + +parend_expr = patcomp.compile_pattern( + """atom< '(' [arith_expr|atom|power|term|STRING|NAME] ')' >""" + ) + + +class FixPrint(fixer_base.BaseFix): + + BM_compatible = True + + PATTERN = """ + simple_stmt< any* bare='print' any* > | print_stmt + """ + + def transform(self, node, results): + assert results + + bare_print = results.get("bare") + + if bare_print: + # Special-case print all by itself. + bare_print.replace(Call(Name(u"print"), [], + prefix=bare_print.prefix)) + # The "from __future__ import print_function"" declaration is added + # by the fix_print_with_import fixer, so we skip it here. + # add_future(node, u'print_function') + return + assert node.children[0] == Name(u"print") + args = node.children[1:] + if len(args) == 1 and parend_expr.match(args[0]): + # We don't want to keep sticking parens around an + # already-parenthesised expression. + return + + sep = end = file = None + if args and args[-1] == Comma(): + args = args[:-1] + end = " " + + # try to determine if the string ends in a non-space whitespace character, in which + # case there should be no space at the end of the conversion + string_leaves = [leaf for leaf in args[-1].leaves() if leaf.type == token.STRING] + if ( + string_leaves + and string_leaves[-1].value[0] != "r" # "raw" string + and string_leaves[-1].value[-3:-1] in (r"\t", r"\n", r"\r") + ): + end = "" + if args and args[0] == pytree.Leaf(token.RIGHTSHIFT, u">>"): + assert len(args) >= 2 + file = args[1].clone() + args = args[3:] # Strip a possible comma after the file expression + # Now synthesize a print(args, sep=..., end=..., file=...) node. + l_args = [arg.clone() for arg in args] + if l_args: + l_args[0].prefix = u"" + if sep is not None or end is not None or file is not None: + if sep is not None: + self.add_kwarg(l_args, u"sep", String(repr(sep))) + if end is not None: + self.add_kwarg(l_args, u"end", String(repr(end))) + if file is not None: + self.add_kwarg(l_args, u"file", file) + n_stmt = Call(Name(u"print"), l_args) + n_stmt.prefix = node.prefix + + # Note that there are corner cases where adding this future-import is + # incorrect, for example when the file also has a 'print ()' statement + # that was intended to print "()". + # add_future(node, u'print_function') + return n_stmt + + def add_kwarg(self, l_nodes, s_kwd, n_expr): + # XXX All this prefix-setting may lose comments (though rarely) + n_expr.prefix = u"" + n_argument = pytree.Node(self.syms.argument, + (Name(s_kwd), + pytree.Leaf(token.EQUAL, u"="), + n_expr)) + if l_nodes: + l_nodes.append(Comma()) + n_argument.prefix = u" " + l_nodes.append(n_argument) |