U ڲg@sddlmZddlmZmZGdddZddZddZd d Zd d Z e e _ dddZ edeZ edeZede Zede ZedeZdS))ParseException)colreplaced_by_pep8c@s(eZdZdZddZddZddZdS) OnlyOncezI Wrapper for parse actions, to ensure they are only called once. cCs ddlm}|||_d|_dS)Nr) _trim_arityF)corercallablecalled)selfZ method_callrr 5/tmp/pip-unpacked-wheel-8n0dx3ox/pyparsing/actions.py__init__ s  zOnlyOnce.__init__cCs.|js||||}d|_|St||ddS)NTz.OnlyOnce obj called multiple times w/out reset)r rr)r sltresultsr r r __call__s zOnlyOnce.__call__cCs d|_dS)zK Allow the associated parse action to be called once more. FN)r )r r r r resetszOnlyOnce.resetN)__name__ __module__ __qualname____doc__r rrr r r r rsrcsfdd}|S)zt Helper method for defining parse actions that require matching at a specific column in the input text. cs$t||kr t||ddS)Nzmatched token not at column )rr)strglocntoksnr r verify_col'sz%match_only_at_col..verify_colr )rrr rr match_only_at_col!s rcs fddS)a Helper method for common parse actions that simply return a literal value. Especially useful when used with :class:`transform_string` (). Example:: num = Word(nums).set_parse_action(lambda toks: int(toks[0])) na = one_of("N/A NA").set_parse_action(replace_with(math.nan)) term = na | num term[1, ...].parse_string("324 234 N/A 234") # -> [324, 234, nan, 234] csgS)Nr rrrZrepl_strr r <zreplace_with..r r r r r replace_with.sr#cCs|dddS)a# Helper parse action for removing quotation marks from parsed quoted strings. Example:: # by default, quotation marks are included in parsed results quoted_string.parse_string("'Now is the Winter of our Discontent'") # -> ["'Now is the Winter of our Discontent'"] # use remove_quotes to strip quotation marks from parsed results quoted_string.set_parse_action(remove_quotes) quoted_string.parse_string("'Now is the Winter of our Discontent'") # -> ["Now is the Winter of our Discontent"] rr rr r r remove_quotes?sr&cs8|r|ddn|ddDfdd}|S)aJ Helper to create a validating parse action to be used with start tags created with :class:`make_xml_tags` or :class:`make_html_tags`. Use ``with_attribute`` to qualify a starting tag with a required attribute value, to avoid false matches on common tags such as ```` or ``
``. Call ``with_attribute`` with a series of attribute names and values. Specify the list of filter attributes names and values as: - keyword arguments, as in ``(align="right")``, or - as an explicit dict with ``**`` operator, when an attribute name is also a Python reserved word, as in ``**{"class":"Customer", "align":"right"}`` - a list of name-value tuples, as in ``(("ns1:class", "Customer"), ("ns2:align", "right"))`` For attribute names with a namespace prefix, you must use the second form. Attribute names are matched insensitive to upper/lower case. If just testing for ``class`` (with or without a namespace), use :class:`with_class`. To verify that the attribute exists, but without specifying a value, pass ``with_attribute.ANY_VALUE`` as the value. Example:: html = '''
Some text
1 4 0 1 0
1,3 2,3 1,1
this has no type
''' div,div_end = make_html_tags("div") # only match div tag having a type attribute with value "grid" div_grid = div().set_parse_action(with_attribute(type="grid")) grid_expr = div_grid + SkipTo(div | div_end)("body") for grid_header in grid_expr.search_string(html): print(grid_header.body) # construct a match with any div tag having a type attribute, regardless of the value div_any_type = div().set_parse_action(with_attribute(type=with_attribute.ANY_VALUE)) div_expr = div_any_type + SkipTo(div | div_end)("body") for div_header in div_expr.search_string(html): print(div_header.body) prints:: 1 4 0 1 0 1 4 0 1 0 1,3 2,3 1,1 NcSsg|]\}}||fqSr r ).0kvr r r sz"with_attribute..c sbD]X\}}||kr$t||d||tjkr|||krt||d|d||d|qdS)Nzno matching attribute z attribute z has value z , must be )rwith_attribute ANY_VALUE)rrtokensattrName attrValueattrsr r pas zwith_attribute..pa)items)argsZ attr_dictr2r r0r r+Ps 8 r+cCs |r|dnd}tf||iS)a Simplified version of :class:`with_attribute` when matching on a div class - made difficult because ``class`` is a reserved word in Python. Example:: html = '''
Some text
1 4 0 1 0
1,3 2,3 1,1
this <div> has no class
''' div,div_end = make_html_tags("div") div_grid = div().set_parse_action(with_class("grid")) grid_expr = div_grid + SkipTo(div | div_end)("body") for grid_header in grid_expr.search_string(html): print(grid_header.body) div_any_type = div().set_parse_action(with_class(withAttribute.ANY_VALUE)) div_expr = div_any_type + SkipTo(div | div_end)("body") for div_header in div_expr.search_string(html): print(div_header.body) prints:: 1 4 0 1 0 1 4 0 1 0 1,3 2,3 1,1 z:classclass)r+) classname namespace classattrr r r with_classs$r: replaceWith removeQuotes withAttribute withClassmatchOnlyAtColN)r5) exceptionsrutilrrrrr#r&r+objectr,r:r;r<r=r>r?r r r r s  L *