237 lines
8.6 KiB
Plaintext
237 lines
8.6 KiB
Plaintext
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{
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"cells": [
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{
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"cell_type": "code",
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"execution_count": null,
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"metadata": {},
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"outputs": [],
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"source": [
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"\n",
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"\"\"\"\n",
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"The module nested_list contains functions for parsing and manipulating the nested lists.\n",
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"\"\"\"\n",
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"from pyparsing import *\n",
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"import ast\n",
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"import pprint\n",
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"import re\n",
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"\n",
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"\n",
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"\"\"\"\n",
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"The class dbl_quot returns a double quoted string while the default in python is single quotation mark for strings.\n",
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"\"\"\"\n",
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"class dbl_quot(str):\n",
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" def __repr__(self):\n",
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" return ''.join(('\"', super().__repr__()[1:-1], '\"'))\n",
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" \n",
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"\n",
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"#old\n",
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"def change(seq, what, make):\n",
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" for i, item in enumerate(seq):\n",
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" if item == what:\n",
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" seq[i] = make\n",
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" elif type(item) == list:\n",
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" change(item, what, make)\n",
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" return seq\n",
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"\n",
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"#new\n",
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"def change_nl_item_val(seq, what, make):\n",
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" \"\"\"\n",
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" The function change_nl_item_val updates the value of a specific item in a nested list with \n",
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" unknown depth and structure to another given value.\n",
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"\n",
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" :param seq: An iterable data structure like nested list.\n",
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" :param what: The value that should be modified.\n",
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" :param make: The vlue that should replace the original value.\n",
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" :return: The modified iterable.\n",
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" \"\"\"\n",
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" for i, item in enumerate(seq):\n",
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" \n",
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" if type(item) != list and item == what:\n",
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" seq[i] = make\n",
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" elif type(item) == list:\n",
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" change_nl_item_val(item, what, make)\n",
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" return seq\n",
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"\n",
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"\n",
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"\n",
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"def change_nl_text_form(seq):\n",
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" \"\"\"\n",
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" The function change_nl_text_form() modifies the value of items of type text in a nested list\n",
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" with form '****' to <text>****</text---> form.\n",
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"\n",
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" :param seq: An iterable data structure like nested list.\n",
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" :return: The modified iterable.\n",
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" \"\"\"\n",
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" for i, item in enumerate(seq):\n",
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" if seq[i] and seq[i] != '<text>' and item[0] == \"'\" and item[1] == \"(\":\n",
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" seq[i] = \"<text>\" + item[1:-1] + \"</text--->\"\n",
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" \n",
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" elif seq[i] and seq[i] == '<text>':\n",
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" item = [\"<text>\",seq[i+1],\"</text--->\"] \n",
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" seq[i] = item\n",
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" del seq[i+1], seq[i+1]\n",
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" \n",
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" elif seq[i] and type(item) == list:\n",
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" change_nl_text_form(item)\n",
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" \n",
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" return seq\n",
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"\n",
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"\n",
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"#old\n",
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"def NL_items_type_Check(NL):\n",
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" flattend_list = flatten_list(NL)\n",
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" for item in flattend_list:\n",
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" \n",
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" if item.isdigit() or item in ('True', 'False'):\n",
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" try:\n",
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" if type(eval(item)) in(int, float, bool):\n",
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" change(NL, item, ast.literal_eval(item))\n",
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" except (ValueError, NameError):\n",
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" pass\n",
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" return(NL)\n",
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"\n",
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"\n",
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"#new\n",
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"def change_nl_item_type(seq):\n",
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" \"\"\"\n",
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" The function change_nl_item_type() modifies the type of string items in a nested list\n",
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" to proper types in python according to their values.\n",
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"\n",
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" :param seq: An iterable data structure like nested list.\n",
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" :return: The modified iterable.\n",
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" \"\"\"\n",
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" \n",
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" for i, item in enumerate(seq):\n",
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" try:\n",
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" if type(item) != list and (item.isdigit() or item in ('True', 'False') or float(item)):\n",
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" \n",
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" if type(eval(item)) in(int, float, bool):\n",
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" seq[i] = ast.literal_eval(item)\n",
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" elif type(item) == list:\n",
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" change_nl_item_type(item)\n",
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" except (ValueError, NameError):\n",
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" pass \n",
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" return seq\n",
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"\n",
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"\n",
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"\n",
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"def item_type(item):\n",
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" \"\"\"\n",
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" The function item_type() detect the type of an item in a pythonic list and maps it to a secondo data type.\n",
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"\n",
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" :param item: An elemt in an iterable like a nested list.\n",
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" :return: The relevant data type in Secondo nested lists as a string.\n",
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" \"\"\"\n",
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" \n",
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" if isinstance(item, str) and item[0] == '\"':\n",
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" return \"string\"\n",
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" if isinstance(item, str) and item[0] != '\"' and item[0] != '<':\n",
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" return \"symbol\"\n",
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" if isinstance(item, int):\n",
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" return \"integer\"\n",
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" if isinstance(item, float):\n",
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" return \"real\"\n",
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" if isinstance(item, bool):\n",
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" return \"boolean\"\n",
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" if (isinstance(item, list) and item[0] == \"<text>\") or (isinstance(item, str) and item.startswith('<text>')):\n",
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" return \"text\"\n",
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" if isinstance(item, list):\n",
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" return \"list\"\n",
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" \n",
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"\n",
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"\n",
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"def nl_parse(content, ftype): #ftype = True: file as argument, ftype = False: string as argument\n",
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" \n",
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" \"\"\"\n",
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" The function nl_parse() parses a Secondo NestedList to a Python Nestedlist.\n",
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"\n",
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" :param content: The nested list to be parsed.\n",
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" :param ftype: A boolean value which tells if the first parameter is a string containing the nested list(False) or a file name(True).\n",
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" :return: The python nested list.\n",
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" \"\"\"\n",
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" #ident = Word(alphas, alphanums + \"-_.\")\n",
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" #number = Word('-'+'+'+nums+'.')\n",
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" #nestedParens = nestedExpr('(', ')', content=enclosed) \n",
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" \n",
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" enclosed = Forward()\n",
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" nestedParens = nestedExpr('(', ')')\n",
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" enclosed << (OneOrMore(nestedParens))\n",
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" if ftype:\n",
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" try:\n",
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" with open(content, encoding=\"utf8\", errors='ignore') as content_file:\n",
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" \n",
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" content = content_file.read()\n",
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" if not content.startswith('('):\n",
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" content = '(' + content + ')'\n",
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" NLresult = enclosed.parseString(content).asList()\n",
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" \n",
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" except (ParseException, ParseFatalException) as err:\n",
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" NLresult = []\n",
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" print(err)\n",
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" print(\"Invalid syntax at line {}, column {}: '{}': {}.\".format(err.lineno,err.column,err.markInputline(),err.msg))\n",
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"\n",
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" else:\n",
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" \n",
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" try:\n",
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" if not content.startswith('('):\n",
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" content = '(' + content + ')'\n",
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" NLresult = enclosed.parseString(content).asList()\n",
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" \n",
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" except (ParseException, ParseFatalException) as err:\n",
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" NLresult = []\n",
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" print(err)\n",
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" print(\"Invalid syntax at line {}, column {}: '{}': {}.\".format(err.lineno,err.column,err.markInputline(),err.msg))\n",
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" \n",
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" NLresult = change_nl_text_form(NLresult[0])\n",
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" NLresult = change_nl_item_type(NLresult)\n",
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" return NLresult\n",
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"\n",
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" \n",
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"def list_to_nl(NL):\n",
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" \"\"\"\n",
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" The function list_to_nl() converts a pythonic nested list to a textual nestedlist with nested parenthesis\n",
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" that matches the nested list format in Secondo.\n",
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"\n",
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" :param NL: The nested list to be changed.\n",
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" :return: The Secondo nested list.\n",
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" \"\"\"\n",
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" strresult = pprint.pformat(NL)\n",
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" replacements = {\"[\": \"(\", \"]\": \")\", \",\": \"\", \"'\": '\"'}\n",
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" strresult = \"\".join([replacements.get(c, c) for c in strresult])\n",
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" return strresult\n",
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"\n"
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]
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},
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{
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"cell_type": "code",
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"execution_count": null,
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"metadata": {},
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"outputs": [],
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"source": [
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"#l = ['1',['2','0.1'],'1',['5','1',['>-(.hi)_</.','11.9876',['56','1',['True','1']]]],'8']\n"
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]
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}
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],
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"metadata": {
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"kernelspec": {
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"display_name": "Python 3",
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"language": "python",
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"name": "python3"
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},
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"language_info": {
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"codemirror_mode": {
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"name": "ipython",
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"version": 3
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},
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"file_extension": ".py",
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"mimetype": "text/x-python",
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"name": "python",
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"nbconvert_exporter": "python",
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"pygments_lexer": "ipython3",
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"version": "3.7.4"
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}
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},
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"nbformat": 4,
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"nbformat_minor": 2
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}
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