Initial commit extracted from Crystal 0.34.0

.editorconfig

@@ -0,0 +1,9 @@
+root = true
+
+[*.cr]
+charset = utf-8
+end_of_line = lf
+insert_final_newline = true
+indent_style = space
+indent_size = 2
+trim_trailing_whitespace = true

.gitignore

@@ -0,0 +1,9 @@
+/docs/
+/lib/
+/bin/
+/.shards/
+*.dwarf
+
+# Libraries don't need dependency lock
+# Dependencies will be locked in applications that use them
+/shard.lock

.travis.yml

@@ -0,0 +1,5 @@
+language: crystal
+
+script:
+  - crystal spec
+  - crystal tool format --check

LICENSE

@@ -0,0 +1,21 @@
+The MIT License (MIT)
+
+Copyright (c) 2020 Manas Technology Solutions
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in
+all copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+THE SOFTWARE.

README.md

@@ -0,0 +1,52 @@
+# json_mapping
+
+Provides the legacy `JSON.mapping` macro method.
+
+## Installation
+
+1. Add the dependency to your `shard.yml`:
+
+```yaml
+dependencies:
+  json_mapping:
+    github: crystal-lang/json_mapping.cr
+```
+
+2. Run `shards install`
+
+## Usage
+
+```crystal
+require "json_mapping"
+
+class Location
+  JSON.mapping(
+    lat: Float64,
+    lng: Float64,
+  )
+end
+
+class House
+  JSON.mapping(
+    address: String,
+    location: {type: Location, nilable: true},
+  )
+end
+
+house = House.from_json(%({"address": "Crystal Road 1234", "location": {"lat": 12.3, "lng": 34.5}}))
+house.address  # => "Crystal Road 1234"
+house.location # => #<Location:0x10cd93d80 @lat=12.3, @lng=34.5>
+house.to_json  # => %({"address":"Crystal Road 1234","location":{"lat":12.3,"lng":34.5}})
+
+houses = Array(House).from_json(%([{"address": "Crystal Road 1234", "location": {"lat": 12.3, "lng": 34.5}}]))
+houses.size    # => 1
+houses.to_json # => %([{"address":"Crystal Road 1234","location":{"lat":12.3,"lng":34.5}}])
+```
+
+## Contributing
+
+1. Fork it (<https://github.com/crystal-lang/json_mapping.cr/fork>)
+2. Create your feature branch (`git checkout -b my-new-feature`)
+3. Commit your changes (`git commit -am 'Add some feature'`)
+4. Push to the branch (`git push origin my-new-feature`)
+5. Create a new Pull Request

shard.yml

@@ -0,0 +1,9 @@
+name: json_mapping
+version: 0.1.0
+
+authors:
+  - Brian J. Cardiff <[email protected]>
+
+crystal: 0.34.0
+
+license: MIT