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    "info": {
        "author": "Jens Engel",
        "author_email": "jenisys@noreply.github.com",
        "bugtrack_url": null,
        "classifiers": [
            "Development Status :: 4 - Beta",
            "Environment :: Console",
            "Environment :: Web Environment",
            "Intended Audience :: Developers",
            "License :: OSI Approved :: BSD License",
            "Operating System :: OS Independent",
            "Programming Language :: Python :: 2.7",
            "Programming Language :: Python :: 3.2",
            "Programming Language :: Python :: 3.3",
            "Programming Language :: Python :: 3.4",
            "Programming Language :: Python :: 3.5",
            "Programming Language :: Python :: 3.6",
            "Programming Language :: Python :: 3.7",
            "Programming Language :: Python :: Implementation :: CPython",
            "Programming Language :: Python :: Implementation :: PyPy",
            "Topic :: Software Development :: Code Generators",
            "Topic :: Software Development :: Libraries :: Python Modules"
        ],
        "description": ".. image:: https://img.shields.io/travis/jenisys/parse_type/master.svg\n    :target: https://travis-ci.org/jenisys/parse_type\n    :alt: Travis CI Build Status\n\n.. image:: https://img.shields.io/pypi/v/parse_type.svg\n    :target: https://pypi.python.org/pypi/parse_type\n    :alt: Latest Version\n\n.. image:: https://img.shields.io/pypi/dm/parse_type.svg\n    :target: https://pypi.python.org/pypi/parse_type\n    :alt: Downloads\n\n.. image:: https://img.shields.io/pypi/l/parse_type.svg\n    :target: https://pypi.python.org/pypi/parse_type/\n    :alt: License\n\n\n`parse_type`_ extends the `parse`_ module (opposite of `string.format()`_)\nwith the following features:\n\n* build type converters for common use cases (enum/mapping, choice)\n* build a type converter with a cardinality constraint (0..1, 0..*, 1..*)\n    from the type converter with cardinality=1.\n* compose a type converter from other type converters\n* an extended parser that supports the CardinalityField naming schema\n    and creates missing type variants (0..1, 0..*, 1..*) from the\n    primary type converter\n\n.. _parse_type: http://pypi.python.org/pypi/parse_type\n.. _parse:      http://pypi.python.org/pypi/parse\n.. _`string.format()`: http://docs.python.org/library/string.html#format-string-syntax\n\n\nDefinitions\n-------------------------------------------------------------------------------\n\n*type converter*\n    A type converter function that converts a textual representation\n    of a value type into instance of this value type.\n    In addition, a type converter function is often annotated with attributes\n    that allows the `parse`_ module to use it in a generic way.\n    A type converter is also called a *parse_type* (a definition used here).\n\n*cardinality field*\n    A naming convention for related types that differ in cardinality.\n    A cardinality field is a type name suffix in the format of a field.\n    It allows parse format expression, ala::\n\n        \"{person:Person}\"     #< Cardinality: 1    (one; the normal case)\n        \"{person:Person?}\"    #< Cardinality: 0..1 (zero or one  = optional)\n        \"{persons:Person*}\"   #< Cardinality: 0..* (zero or more = many0)\n        \"{persons:Person+}\"   #< Cardinality: 1..* (one  or more = many)\n\n    This naming convention mimics the relationship descriptions in UML diagrams.\n\n\nBasic Example\n-------------------------------------------------------------------------------\n\nDefine an own type converter for numbers (integers):\n\n.. code-block:: python\n\n    # -- USE CASE:\n    def parse_number(text):\n        return int(text)\n    parse_number.pattern = r\"\\d+\"  # -- REGULAR EXPRESSION pattern for type.\n\nThis is equivalent to:\n\n.. code-block:: python\n\n    import parse\n\n    @parse.with_pattern(r\"\\d+\")\n    def parse_number(text):\n         return int(text)\n    assert hasattr(parse_number, \"pattern\")\n    assert parse_number.pattern == r\"\\d+\"\n\n\n.. code-block:: python\n\n    # -- USE CASE: Use the type converter with the parse module.\n    schema = \"Hello {number:Number}\"\n    parser = parse.Parser(schema, dict(Number=parse_number))\n    result = parser.parse(\"Hello 42\")\n    assert result is not None, \"REQUIRE: text matches the schema.\"\n    assert result[\"number\"] == 42\n\n    result = parser.parse(\"Hello XXX\")\n    assert result is None, \"MISMATCH: text does not match the schema.\"\n\n.. hint::\n\n    The described functionality above is standard functionality\n    of the `parse`_ module. It serves as introduction for the remaining cases.\n\n\nCardinality\n-------------------------------------------------------------------------------\n\nCreate an type converter for \"ManyNumbers\" (List, separated with commas)\nwith cardinality \"1..* = 1+\" (many) from the type converter for a \"Number\".\n\n.. code-block:: python\n\n    # -- USE CASE: Create new type converter with a cardinality constraint.\n    # CARDINALITY: many := one or more (1..*)\n    from parse import Parser\n    from parse_type import TypeBuilder\n    parse_numbers = TypeBuilder.with_many(parse_number, listsep=\",\")\n\n    schema = \"List: {numbers:ManyNumbers}\"\n    parser = Parser(schema, dict(ManyNumbers=parse_numbers))\n    result = parser.parse(\"List: 1, 2, 3\")\n    assert result[\"numbers\"] == [1, 2, 3]\n\n\nCreate an type converter for an \"OptionalNumbers\" with cardinality \"0..1 = ?\"\n(optional) from the type converter for a \"Number\".\n\n.. code-block:: python\n\n    # -- USE CASE: Create new type converter with cardinality constraint.\n    # CARDINALITY: optional := zero or one (0..1)\n    from parse import Parser\n    from parse_type import TypeBuilder\n\n    parse_optional_number = TypeBuilder.with_optional(parse_number)\n    schema = \"Optional: {number:OptionalNumber}\"\n    parser = Parser(schema, dict(OptionalNumber=parse_optional_number))\n    result = parser.parse(\"Optional: 42\")\n    assert result[\"number\"] == 42\n    result = parser.parse(\"Optional: \")\n    assert result[\"number\"] == None\n\n\nEnumeration (Name-to-Value Mapping)\n-------------------------------------------------------------------------------\n\nCreate an type converter for an \"Enumeration\" from the description of\nthe mapping as dictionary.\n\n.. code-block:: python\n\n    # -- USE CASE: Create a type converter for an enumeration.\n    from parse import Parser\n    from parse_type import TypeBuilder\n\n    parse_enum_yesno = TypeBuilder.make_enum({\"yes\": True, \"no\": False})\n    parser = Parser(\"Answer: {answer:YesNo}\", dict(YesNo=parse_enum_yesno))\n    result = parser.parse(\"Answer: yes\")\n    assert result[\"answer\"] == True\n\n\nCreate an type converter for an \"Enumeration\" from the description of\nthe mapping as an enumeration class (`Python 3.4 enum`_ or the `enum34`_\nbackport; see also: `PEP-0435`_).\n\n.. code-block:: python\n\n    # -- USE CASE: Create a type converter for enum34 enumeration class.\n    # NOTE: Use Python 3.4 or enum34 backport.\n    from parse import Parser\n    from parse_type import TypeBuilder\n    from enum import Enum\n\n    class Color(Enum):\n        red   = 1\n        green = 2\n        blue  = 3\n\n    parse_enum_color = TypeBuilder.make_enum(Color)\n    parser = Parser(\"Select: {color:Color}\", dict(Color=parse_enum_color))\n    result = parser.parse(\"Select: red\")\n    assert result[\"color\"] is Color.red\n\n.. _`Python 3.4 enum`: http://docs.python.org/3.4/library/enum.html#module-enum\n.. _enum34:   http://pypi.python.org/pypi/enum34\n.. _PEP-0435: http://www.python.org/dev/peps/pep-0435\n\n\nChoice (Name Enumeration)\n-------------------------------------------------------------------------------\n\nA Choice data type allows to select one of several strings.\n\nCreate an type converter for an \"Choice\" list, a list of unique names\n(as string).\n\n.. code-block:: python\n\n    from parse import Parser\n    from parse_type import TypeBuilder\n\n    parse_choice_yesno = TypeBuilder.make_choice([\"yes\", \"no\"])\n    schema = \"Answer: {answer:ChoiceYesNo}\"\n    parser = Parser(schema, dict(ChoiceYesNo=parse_choice_yesno))\n    result = parser.parse(\"Answer: yes\")\n    assert result[\"answer\"] == \"yes\"\n\n\nVariant (Type Alternatives)\n-------------------------------------------------------------------------------\n\nSometimes you need a type converter that can accept text for multiple\ntype converter alternatives. This is normally called a \"variant\" (or: union).\n\nCreate an type converter for an \"Variant\" type that accepts:\n\n* Numbers (positive numbers, as integer)\n* Color enum values (by name)\n\n.. code-block:: python\n\n    from parse import Parser, with_pattern\n    from parse_type import TypeBuilder\n    from enum import Enum\n\n    class Color(Enum):\n        red   = 1\n        green = 2\n        blue  = 3\n\n    @with_pattern(r\"\\d+\")\n    def parse_number(text):\n        return int(text)\n\n    # -- MAKE VARIANT: Alternatives of different type converters.\n    parse_color = TypeBuilder.make_enum(Color)\n    parse_variant = TypeBuilder.make_variant([parse_number, parse_color])\n    schema = \"Variant: {variant:Number_or_Color}\"\n    parser = Parser(schema, dict(Number_or_Color=parse_variant))\n\n    # -- TEST VARIANT: With number, color and mismatch.\n    result = parser.parse(\"Variant: 42\")\n    assert result[\"variant\"] == 42\n    result = parser.parse(\"Variant: blue\")\n    assert result[\"variant\"] is Color.blue\n    result = parser.parse(\"Variant: __MISMATCH__\")\n    assert not result\n\n\n\nExtended Parser with CardinalityField support\n-------------------------------------------------------------------------------\n\nThe parser extends the ``parse.Parser`` and adds the following functionality:\n\n   * supports the CardinalityField naming scheme\n   * automatically creates missing type variants for types with\n     a CardinalityField by using the primary type converter for cardinality=1\n   * extends the provide type converter dictionary with new type variants.\n\nExample:\n\n.. code-block:: python\n\n    # -- USE CASE: Parser with CardinalityField support.\n    # NOTE: Automatically adds missing type variants with CardinalityField part.\n    # USE:  parse_number() type converter from above.\n    from parse_type.cfparse import Parser\n\n    # -- PREPARE: parser, adds missing type variant for cardinality 1..* (many)\n    type_dict = dict(Number=parse_number)\n    schema = \"List: {numbers:Number+}\"\n    parser = Parser(schema, type_dict)\n    assert \"Number+\" in type_dict, \"Created missing type variant based on: Number\"\n\n    # -- USE: parser.\n    result = parser.parse(\"List: 1, 2, 3\")\n    assert result[\"numbers\"] == [1, 2, 3]\n\n\n",
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