lib/github: add setters to all github api entities and events
[nit.git] / lib / github / api.nit
index 6f7c7d9..6b1935e 100644 (file)
@@ -12,7 +12,7 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 
-# Nit object oriented interface to Github api.
+# Nit object oriented interface to [Github api](https://developer.github.com/v3/).
 #
 # This modules reifies Github API elements as Nit classes.
 #
@@ -21,11 +21,9 @@ module api
 
 import github_curl
 
-# Interface to Github REST API.
+# Client to Github API
 #
-# Used by all `GithubEntity` to perform requests.
-#
-# Usage:
+# To access the API you need an instance of a `GithubAPI` client.
 #
 # ~~~
 # # Get Github authentification token.
@@ -36,10 +34,10 @@ import github_curl
 # var api = new GithubAPI(token)
 # ~~~
 #
-# The API client allows to get Github API entities:
+# The API client allows you to get Github API entities.
 #
 # ~~~
-# var repo = api.load_repo("privat/nit")
+# var repo = api.load_repo("nitlang/nit")
 # assert repo != null
 # assert repo.name == "nit"
 #
@@ -49,9 +47,16 @@ import github_curl
 # ~~~
 class GithubAPI
 
-       # Github API OAuth token.
+       # Github API OAuth token
+       #
+       # To access your private ressources, you must
+       # [authenticate](https://developer.github.com/guides/basics-of-authentication/).
+       #
+       # For client applications, Github recommands to use the
+       # [OAuth tokens](https://developer.github.com/v3/oauth/) authentification method.
+       #
+       #
        #
-       # This token is used to authenticate the application on Github API.
        # Be aware that there is [rate limits](https://developer.github.com/v3/rate_limit/)
        # associated to the key.
        var auth: String
@@ -89,7 +94,7 @@ class GithubAPI
        # See other `load_*` methods to use more expressive types.
        #
        #     var api = new GithubAPI(get_github_oauth)
-       #     var obj = api.get("repos/privat/nit")
+       #     var obj = api.get("repos/nitlang/nit")
        #     assert obj isa JsonObject
        #     assert obj["name"] == "nit"
        #
@@ -140,9 +145,9 @@ class GithubAPI
                return res.as(JsonObject)
        end
 
-       # Get the Github user with `login`.
+       # Get the Github user with `login`
        #
-       # Returns `null` if the user cannot be found.
+       # Loads the `User` from the API or returns `null` if the user cannot be found.
        #
        #     var api = new GithubAPI(get_github_oauth)
        #     var user = api.load_user("Morriar")
@@ -154,12 +159,12 @@ class GithubAPI
 
        # Get the Github repo with `full_name`.
        #
-       # Returns `null` if the repo cannot be found.
+       # Loads the `Repo` from the API or returns `null` if the repo cannot be found.
        #
        #     var api = new GithubAPI(get_github_oauth)
-       #     var repo = api.load_repo("privat/nit")
+       #     var repo = api.load_repo("nitlang/nit")
        #     assert repo.name == "nit"
-       #     assert repo.owner.login == "privat"
+       #     assert repo.owner.login == "nitlang"
        #     assert repo.default_branch.name == "master"
        fun load_repo(full_name: String): nullable Repo do
                var repo = new Repo(self, full_name)
@@ -171,7 +176,7 @@ class GithubAPI
        # Returns `null` if the branch cannot be found.
        #
        #     var api = new GithubAPI(get_github_oauth)
-       #     var repo = api.load_repo("privat/nit")
+       #     var repo = api.load_repo("nitlang/nit")
        #     assert repo != null
        #     var branch = api.load_branch(repo, "master")
        #     assert branch.name == "master"
@@ -186,7 +191,7 @@ class GithubAPI
        # Returns `null` if the commit cannot be found.
        #
        #     var api = new GithubAPI(get_github_oauth)
-       #     var repo = api.load_repo("privat/nit")
+       #     var repo = api.load_repo("nitlang/nit")
        #     assert repo != null
        #     var commit = api.load_commit(repo, "64ce1f")
        #     assert commit isa Commit
@@ -200,7 +205,7 @@ class GithubAPI
        # Returns `null` if the issue cannot be found.
        #
        #     var api = new GithubAPI(get_github_oauth)
-       #     var repo = api.load_repo("privat/nit")
+       #     var repo = api.load_repo("nitlang/nit")
        #     assert repo != null
        #     var issue = api.load_issue(repo, 1)
        #     assert issue.title == "Doc"
@@ -214,7 +219,7 @@ class GithubAPI
        # Returns `null` if the pull request cannot be found.
        #
        #     var api = new GithubAPI(get_github_oauth)
-       #     var repo = api.load_repo("privat/nit")
+       #     var repo = api.load_repo("nitlang/nit")
        #     assert repo != null
        #     var pull = api.load_pull(repo, 1)
        #     assert pull.title == "Doc"
@@ -229,7 +234,7 @@ class GithubAPI
        # Returns `null` if the label cannot be found.
        #
        #     var api = new GithubAPI(get_github_oauth)
-       #     var repo = api.load_repo("privat/nit")
+       #     var repo = api.load_repo("nitlang/nit")
        #     assert repo != null
        #     var labl = api.load_label(repo, "ok_will_merge")
        #     assert labl != null
@@ -243,7 +248,7 @@ class GithubAPI
        # Returns `null` if the milestone cannot be found.
        #
        #     var api = new GithubAPI(get_github_oauth)
-       #     var repo = api.load_repo("privat/nit")
+       #     var repo = api.load_repo("nitlang/nit")
        #     assert repo != null
        #     var stone = api.load_milestone(repo, 4)
        #     assert stone.title == "v1.0prealpha"
@@ -257,7 +262,7 @@ class GithubAPI
        # Returns `null` if the event cannot be found.
        #
        #     var api = new GithubAPI(get_github_oauth)
-       #     var repo = api.load_repo("privat/nit")
+       #     var repo = api.load_repo("nitlang/nit")
        #     assert repo isa Repo
        #     var event = api.load_issue_event(repo, 199674194)
        #     assert event.actor.login == "privat"
@@ -274,7 +279,7 @@ class GithubAPI
        # Returns `null` if the comment cannot be found.
        #
        #     var api = new GithubAPI(get_github_oauth)
-       #     var repo = api.load_repo("privat/nit")
+       #     var repo = api.load_repo("nitlang/nit")
        #     assert repo != null
        #     var comment = api.load_commit_comment(repo, 8982707)
        #     assert comment.user.login == "Morriar"
@@ -290,7 +295,7 @@ class GithubAPI
        # Returns `null` if the comment cannot be found.
        #
        #     var api = new GithubAPI(get_github_oauth)
-       #     var repo = api.load_repo("privat/nit")
+       #     var repo = api.load_repo("nitlang/nit")
        #     assert repo != null
        #     var comment = api.load_issue_comment(repo, 6020149)
        #     assert comment.user.login == "privat"
@@ -306,7 +311,7 @@ class GithubAPI
        # Returns `null` if the comment cannot be found.
        #
        #     var api = new GithubAPI(get_github_oauth)
-       #     var repo = api.load_repo("privat/nit")
+       #     var repo = api.load_repo("nitlang/nit")
        #     assert repo != null
        #     var comment = api.load_review_comment(repo, 21010363)
        #     assert comment.path == "src/modelize/modelize_property.nit"
@@ -346,14 +351,16 @@ abstract class GithubEntity
        redef fun to_s do return json.to_json
 
        # Github page url.
-       fun html_url: String do return json["html_url"].to_s
+       fun html_url: String do return json["html_url"].as(String)
+
+       # Set page url.
+       fun html_url=(url: String) do json["html_url"] = url
 end
 
-# A Github user.
+# A Github user
 #
+# Provides access to [Github user data](https://developer.github.com/v3/users/).
 # Should be accessed from `GithubAPI::load_user`.
-#
-# See <https://developer.github.com/v3/users/>.
 class User
        super GithubEntity
 
@@ -364,19 +371,21 @@ class User
 
        # Init `self` from a `json` object.
        init from_json(api: GithubAPI, json: JsonObject) do
-               init(api, json["login"].to_s)
+               init(api, json["login"].as(String))
                self.json = json
        end
 
        # Avatar image url for this user.
-       fun avatar_url: String do return json["avatar_url"].to_s
+       fun avatar_url: String do return json["avatar_url"].as(String)
+
+       # Set avatar url.
+       fun avatar_url=(url: String) do json["avatar_url"] = url
 end
 
 # A Github repository.
 #
+# Provides access to [Github repo data](https://developer.github.com/v3/repos/).
 # Should be accessed from `GithubAPI::load_repo`.
-#
-# See <https://developer.github.com/v3/repos/>.
 class Repo
        super GithubEntity
 
@@ -387,17 +396,21 @@ class Repo
 
        # Init `self` from a `json` object.
        init from_json(api: GithubAPI, json: JsonObject) do
-               init(api, json["full_name"].to_s)
+               init(api, json["full_name"].as(String))
                self.json = json
        end
 
        # Repo short name on Github.
-       fun name: String do return json["name"].to_s
+       fun name: String do return json["name"].as(String)
+
+       # Set repo full name
+       fun name=(name: String) do json["name"] = name
 
        # Get the repo owner.
-       fun owner: User do
-               return new User.from_json(api, json["owner"].as(JsonObject))
-       end
+       fun owner: User do return new User.from_json(api, json["owner"].as(JsonObject))
+
+       # Set repo owner
+       fun owner=(owner: User) do json["owner"] = owner.json
 
        # List of branches associated with their names.
        fun branches: Map[String, Branch] do
@@ -407,7 +420,7 @@ class Repo
                if not array isa JsonArray then return res
                for obj in array do
                        if not obj isa JsonObject then continue
-                       var name = obj["name"].to_s
+                       var name = obj["name"].as(String)
                        res[name] = new Branch.from_json(api, self, obj)
                end
                return res
@@ -467,7 +480,7 @@ class Repo
                if not array isa JsonArray then return res
                for obj in array do
                        if not obj isa JsonObject then continue
-                       var name = obj["name"].to_s
+                       var name = obj["name"].as(String)
                        res[name] = new Label.from_json(api, self, obj)
                end
                return res
@@ -525,11 +538,14 @@ class Repo
 
        # Repo default branch.
        fun default_branch: Branch do
-               var name = json["default_branch"].to_s
+               var name = json["default_branch"].as(String)
                var branch = api.load_branch(self, name)
                assert branch isa Branch
                return branch
        end
+
+       # Set the default branch
+       fun default_branch=(branch: Branch) do json["default_branch"] = branch.json
 end
 
 # A `RepoEntity` is something contained in a `Repo`.
@@ -561,14 +577,15 @@ class Branch
        var name: String
 
        redef init from_json(api, repo, json) do
-               self.name = json["name"].to_s
+               self.name = json["name"].as(String)
                super
        end
 
        # Get the last commit of `self`.
-       fun commit: Commit do
-               return new Commit.from_json(api, repo, json["commit"].as(JsonObject))
-       end
+       fun commit: Commit do return new Commit.from_json(api, repo, json["commit"].as(JsonObject))
+
+       # Set the last commit
+       fun commit=(commit: Commit) do json["commit"] = commit.json
 
        # List all commits in `self`.
        #
@@ -596,7 +613,7 @@ end
 #
 # Should be accessed from `GithubAPI::load_commit`.
 #
-# See <https://developer.github.com/v3/commits/>.
+# See <https://developer.github.com/v3/repos/commits/>.
 class Commit
        super RepoEntity
 
@@ -606,56 +623,79 @@ class Commit
        var sha: String
 
        redef init from_json(api, repo, json) do
-               self.sha = json["sha"].to_s
+               self.sha = json["sha"].as(String)
                super
        end
 
        # Parent commits of `self`.
        fun parents: Array[Commit] do
                var res = new Array[Commit]
-               var parents = json["parents"]
+               var parents = json.get_or_null("parents")
                if not parents isa JsonArray then return res
                for obj in parents do
                        if not obj isa JsonObject then continue
-                       res.add(api.load_commit(repo, obj["sha"].to_s).as(not null))
+                       res.add(api.load_commit(repo, obj["sha"].as(String)).as(not null))
                end
                return res
        end
 
+       # Set parent commits.
+       fun parents=(parents: Array[Commit]) do
+               var res = new JsonArray
+               for parent in parents do res.add parent.json
+               json["parents"] = res
+       end
+
        # Author of the commit.
        fun author: nullable User do
-               if not json.has_key("author") then return null
-               var user = json["author"]
-               if not user isa JsonObject then return null
-               return new User.from_json(api, user)
+               var user = json.get_or_null("author")
+               if user isa JsonObject then return new User.from_json(api, user)
+               return null
+       end
+
+       # Set commit author.
+       fun author=(user: nullable User) do
+               if user == null then
+                       json["author"] = null
+               else
+                       json["author"] = user.json
+               end
        end
 
        # Committer of the commit.
        fun committer: nullable User do
-               if not json.has_key("committer") then return null
-               var user = json["author"]
-               if not user isa JsonObject then return null
-               return new User.from_json(api, user)
+               var user = json.get_or_null("author")
+               if user isa JsonObject then return new User.from_json(api, user)
+               return null
+       end
+
+       # Set commit committer.
+       fun committer=(user: nullable User) do
+               if user == null then
+                       json["committer"] = null
+               else
+                       json["committer"] = user.json
+               end
        end
 
        # Authoring date as ISODate.
        fun author_date: ISODate do
                var commit = json["commit"].as(JsonObject)
                var author = commit["author"].as(JsonObject)
-               return new ISODate.from_string(author["date"].to_s)
+               return new ISODate.from_string(author["date"].as(String))
        end
 
        # Commit date as ISODate.
        fun commit_date: ISODate do
                var commit = json["commit"].as(JsonObject)
                var author = commit["committer"].as(JsonObject)
-               return new ISODate.from_string(author["date"].to_s)
+               return new ISODate.from_string(author["date"].as(String))
        end
 
        # List files staged in this commit.
        fun files: Array[GithubFile] do
                var res = new Array[GithubFile]
-               var files = json["files"]
+               var files = json.get_or_null("files")
                if not files isa JsonArray then return res
                for obj in files do
                        res.add(new GithubFile(obj.as(JsonObject)))
@@ -663,8 +703,15 @@ class Commit
                return res
        end
 
+       # Set commit files.
+       fun files=(files: Array[GithubFile]) do
+               var res = new JsonArray
+               for file in files do res.add file.json
+               json["files"] = res
+       end
+
        # Commit message.
-       fun message: String do return json["commit"].as(JsonObject)["message"].to_s
+       fun message: String do return json["commit"].as(JsonObject)["message"].as(String)
 end
 
 # A Github issue.
@@ -686,43 +733,72 @@ class Issue
        end
 
        # Issue title.
-       fun title: String do return json["title"].to_s
+       fun title: String do return json["title"].as(String)
+
+       # Set issue title
+       fun title=(title: String) do json["title"] = title
 
        # User that created this issue.
-       fun user: User do
-               return new User.from_json(api, json["user"].as(JsonObject))
-       end
+       fun user: User do return new User.from_json(api, json["user"].as(JsonObject))
+
+       # Set issue creator.
+       fun user=(user: User) do json["user"] = user.json
 
        # List of labels on this issue associated to their names.
        fun labels: Map[String, Label] do
                var res = new HashMap[String, Label]
-               if not json.has_key("labels") then return res
-               for obj in json["labels"].as(JsonArray) do
+               var lbls = json.get_or_null("labels")
+               if not lbls isa JsonArray then return res
+               for obj in lbls do
                        if not obj isa JsonObject then continue
-                       var name = obj["name"].to_s
+                       var name = obj["name"].as(String)
                        res[name] = new Label.from_json(api, repo, obj)
                end
                return res
        end
 
        # State of the issue on Github.
-       fun state: String do return json["state"].to_s
+       fun state: String do return json["state"].as(String)
+
+       # Set the state of this issue.
+       fun state=(state: String) do json["state"] = state
 
        # Is the issue locked?
        fun locked: Bool do return json["locked"].as(Bool)
 
+       # Set issue locked state.
+       fun locked=(locked: Bool) do json["locked"] = locked
+
        # Assigned `User` (if any).
        fun assignee: nullable User do
-               var assignee = json["assignee"]
-               if not assignee isa JsonObject then return null
-               return new User.from_json(api, assignee)
+               var assignee = json.get_or_null("assignee")
+               if assignee isa JsonObject then return new User.from_json(api, assignee)
+               return null
+       end
+
+       # Set issue assignee.
+       fun assignee=(user: nullable User) do
+               if user == null then
+                       json["assignee"] = null
+               else
+                       json["assignee"] = user.json
+               end
        end
 
        # `Milestone` (if any).
        fun milestone: nullable Milestone do
-               var milestone = json["milestone"]
-               if not milestone isa JsonObject then return null
-               return new Milestone.from_json(api, repo, milestone)
+               var milestone = json.get_or_null("milestone")
+               if milestone isa JsonObject then return new Milestone.from_json(api, repo, milestone)
+               return null
+       end
+
+       # Set issue milestone.
+       fun milestone=(milestone: nullable Milestone) do
+               if milestone == null then
+                       json["milestone"] = null
+               else
+                       json["milestone"] = milestone.json
+               end
        end
 
        # List of comments made on this issue.
@@ -747,37 +823,66 @@ class Issue
        end
 
        # Number of comments on this issue.
-       fun comments_count: Int do return json["comments"].to_s.to_i
+       fun comments_count: Int do return json["comments"].as(Int)
 
        # Creation time in ISODate format.
-       fun created_at: ISODate do
-               return new ISODate.from_string(json["created_at"].to_s)
+       fun created_at: ISODate do return new ISODate.from_string(json["created_at"].as(String))
+
+       # Set issue creation time.
+       fun created_at=(created_at: nullable ISODate) do
+               if created_at == null then
+                       json["created_at"] = null
+               else
+                       json["created_at"] = created_at.to_s
+               end
        end
 
        # Last update time in ISODate format (if any).
        fun updated_at: nullable ISODate do
-               var res = json["updated_at"]
-               if res == null then return null
-               return new ISODate.from_string(res.to_s)
+               var res = json.get_or_null("updated_at")
+               if res isa String then return new ISODate.from_string(res)
+               return null
+       end
+
+       # Set issue last update time.
+       fun updated_at=(updated_at: nullable ISODate) do
+               if updated_at == null then
+                       json["updated_at"] = null
+               else
+                       json["updated_at"] = updated_at.to_s
+               end
        end
 
        # Close time in ISODate format (if any).
        fun closed_at: nullable ISODate do
-               var res = json["closed_at"]
-               if res == null then return null
-               return new ISODate.from_string(res.to_s)
+               var res = json.get_or_null("closed_at")
+               if res isa String then return new ISODate.from_string(res)
+               return null
+       end
+
+       # Set issue close time.
+       fun closed_at=(closed_at: nullable ISODate) do
+               if closed_at == null then
+                       json["closed_at"] = null
+               else
+                       json["closed_at"] = closed_at.to_s
+               end
        end
 
        # TODO link to pull request
 
        # Full description of the issue.
-       fun body: String  do return json["body"].to_s
+       fun body: String do return json["body"].as(String)
+
+       # Set description body
+       fun body=(body: String) do json["body"] = body
 
        # List of events on this issue.
        fun events: Array[IssueEvent] do
                var res = new Array[IssueEvent]
                var page = 1
-               var array = api.get("{key}/events?page={page}").as(JsonArray)
+               var array = api.get("{key}/events?page={page}")
+               if not array isa JsonArray then return res
                while not array.is_empty do
                        for obj in array do
                                if not obj isa JsonObject then continue
@@ -791,9 +896,18 @@ class Issue
 
        # User that closed this issue (if any).
        fun closed_by: nullable User do
-               var closer = json["closed_by"]
-               if not closer isa JsonObject then return null
-               return new User.from_json(api, closer)
+               var closer = json.get_or_null("closed_by")
+               if closer isa JsonObject then return new User.from_json(api, closer)
+               return null
+       end
+
+       # Set user that closed the issue.
+       fun closed_by=(user: nullable User) do
+               if user == null then
+                       json["closed_by"] = null
+               else
+                       json["closed_by"] = user.json
+               end
        end
 end
 
@@ -810,16 +924,31 @@ class PullRequest
 
        # Merge time in ISODate format (if any).
        fun merged_at: nullable ISODate do
-               var res = json["merged_at"]
-               if res == null then return null
-               return new ISODate.from_string(res.to_s)
+               var res = json.get_or_null("merged_at")
+               if res isa String then return new ISODate.from_string(res)
+               return null
+       end
+
+       # Set pull request merge time.
+       fun merged_at=(merged_at: nullable ISODate) do
+               if merged_at == null then
+                       json["merged_at"] = null
+               else
+                       json["merged_at"] = merged_at.to_s
+               end
        end
 
        # Merge commit SHA.
-       fun merge_commit_sha: String do return json["merge_commit_sha"].to_s
+       fun merge_commit_sha: String do return json["merge_commit_sha"].as(String)
+
+       # Set merge_commit_sha
+       fun merge_commit_sha=(sha: String) do json["merge_commit_sha"] = sha
 
        # Count of comments made on the pull request diff.
-       fun review_comments: Int do return json["review_comments"].to_s.to_i
+       fun review_comments: Int do return json["review_comments"].as(Int)
+
+       # Set review_comments
+       fun review_comments=(count: Int) do json["review_comments"] = count
 
        # Pull request head (can be a commit SHA or a branch name).
        fun head: PullRef do
@@ -827,41 +956,77 @@ class PullRequest
                return new PullRef(api, json)
        end
 
+       # Set head
+       fun head=(head: PullRef) do json["head"] = head.json
+
        # Pull request base (can be a commit SHA or a branch name).
        fun base: PullRef do
                var json = json["base"].as(JsonObject)
                return new PullRef(api, json)
        end
 
+       # Set base
+       fun base=(base: PullRef) do json["base"] = base.json
+
        # Is this pull request merged?
        fun merged: Bool do return json["merged"].as(Bool)
 
+       # Set merged
+       fun merged=(merged: Bool) do json["merged"] = merged
+
        # Is this pull request mergeable?
        fun mergeable: Bool do return json["mergeable"].as(Bool)
 
+       # Set mergeable
+       fun mergeable=(mergeable: Bool) do json["mergeable"] = mergeable
+
        # Mergeable state of this pull request.
        #
        # See <https://developer.github.com/v3/pulls/#list-pull-requests>.
-       fun mergeable_state: Int do return json["mergeable_state"].to_s.to_i
+       fun mergeable_state: Int do return json["mergeable_state"].as(Int)
+
+       # Set mergeable_state
+       fun mergeable_state=(mergeable_state: Int) do json["mergeable_state"] = mergeable_state
 
        # User that merged this pull request (if any).
        fun merged_by: nullable User do
-               var merger = json["merged_by"]
-               if not merger isa JsonObject then return null
-               return new User.from_json(api, merger)
+               var merger = json.get_or_null("merged_by")
+               if merger isa JsonObject then return new User.from_json(api, merger)
+               return null
+       end
+
+       # Set merged_by.
+       fun merged_by=(merged_by: nullable User) do
+               if merged_by == null then
+                       json["merged_by"] = null
+               else
+                       json["merged_by"] = merged_by.json
+               end
        end
 
        # Count of commits in this pull request.
-       fun commits: Int do return json["commits"].to_s.to_i
+       fun commits: Int do return json["commits"].as(Int)
+
+       # Set commits
+       fun commits=(commits: Int) do json["commits"] = commits
 
        # Added line count.
-       fun additions: Int do return json["additions"].to_s.to_i
+       fun additions: Int do return json["additions"].as(Int)
+
+       # Set additions
+       fun additions=(additions: Int) do json["additions"] = additions
 
        # Deleted line count.
-       fun deletions: Int do return json["deletions"].to_s.to_i
+       fun deletions: Int do return json["deletions"].as(Int)
+
+       # Set deletions
+       fun deletions=(deletions: Int) do json["deletions"] = deletions
 
        # Changed files count.
-       fun changed_files: Int do return json["changed_files"].to_s.to_i
+       fun changed_files: Int do return json["changed_files"].as(Int)
+
+       # Set changed_files
+       fun changed_files=(changed_files: Int) do json["changed_files"] = changed_files
 end
 
 # A pull request reference (used for head and base).
@@ -874,23 +1039,38 @@ class PullRef
        var json: JsonObject
 
        # Label pointed by `self`.
-       fun labl: String do return json["label"].to_s
+       fun labl: String do return json["label"].as(String)
+
+       # Set labl
+       fun labl=(labl: String) do json["label"] = labl
 
        # Reference pointed by `self`.
-       fun ref: String do return json["ref"].to_s
+       fun ref: String do return json["ref"].as(String)
+
+       # Set ref
+       fun ref=(ref: String) do json["ref"] = ref
 
        # Commit SHA pointed by `self`.
-       fun sha: String do return json["sha"].to_s
+       fun sha: String do return json["sha"].as(String)
+
+       # Set sha
+       fun sha=(sha: String) do json["sha"] = sha
 
        # User pointed by `self`.
        fun user: User do
                return new User.from_json(api, json["user"].as(JsonObject))
        end
 
+       # Set user
+       fun user=(user: User) do json["user"] = user.json
+
        # Repo pointed by `self`.
        fun repo: Repo do
                return new Repo.from_json(api, json["repo"].as(JsonObject))
        end
+
+       # Set repo
+       fun repo=(repo: Repo) do json["repo"] = repo.json
 end
 
 # A Github label.
@@ -907,12 +1087,15 @@ class Label
        var name: String
 
        redef init from_json(api, repo, json) do
-               self.name = json["name"].to_s
+               self.name = json["name"].as(String)
                super
        end
 
        # Label color code.
-       fun color: String do return json["color"].to_s
+       fun color: String do return json["color"].as(String)
+
+       # Set color
+       fun color=(color: String) do json["color"] = color
 end
 
 # A Github milestone.
@@ -934,49 +1117,97 @@ class Milestone
        end
 
        # Milestone title.
-       fun title: String do return json["title"].to_s
+       fun title: String do return json["title"].as(String)
+
+       # Set title
+       fun title=(title: String) do json["title"] = title
 
        # Milestone long description.
-       fun description: String do return json["description"].to_s
+       fun description: String do return json["description"].as(String)
+
+       # Set description
+       fun description=(description: String) do json["description"] = description
 
        # Count of opened issues linked to this milestone.
-       fun open_issues: Int do return json["open_issues"].to_s.to_i
+       fun open_issues: Int do return json["open_issues"].as(Int)
+
+       # Set open_issues
+       fun open_issues=(open_issues: Int) do json["open_issues"] = open_issues
 
        # Count of closed issues linked to this milestone.
-       fun closed_issues: Int do return json["closed_issues"].to_s.to_i
+       fun closed_issues: Int do return json["closed_issues"].as(Int)
+
+       # Set closed_issues
+       fun closed_issues=(closed_issues: Int) do json["closed_issues"] = closed_issues
 
        # Milestone state.
-       fun state: String do return json["state"].to_s
+       fun state: String do return json["state"].as(String)
+
+       # Set state
+       fun state=(state: String) do json["state"] = state
 
        # Creation time in ISODate format.
        fun created_at: ISODate do
-               return new ISODate.from_string(json["created_at"].to_s)
+               return new ISODate.from_string(json["created_at"].as(String))
        end
 
+       # Set created_at
+       fun created_at=(created_at: ISODate) do json["created_at"] = created_at.to_s
+
        # User that created this milestone.
        fun creator: User do
                return new User.from_json(api, json["creator"].as(JsonObject))
        end
 
+       # Set creator
+       fun creator=(creator: User) do json["creator"] = creator.json
+
        # Due time in ISODate format (if any).
        fun due_on: nullable ISODate do
-               var res = json["updated_at"]
-               if res == null then return null
-               return new ISODate.from_string(res.to_s)
+               var res = json.get_or_null("updated_at")
+               if res isa String then return new ISODate.from_string(res)
+               return null
+       end
+
+       # Set due_on.
+       fun due_on=(due_on: nullable ISODate) do
+               if due_on == null then
+                       json["due_on"] = null
+               else
+                       json["due_on"] = due_on.to_s
+               end
        end
 
        # Update time in ISODate format (if any).
        fun updated_at: nullable ISODate do
-               var res = json["updated_at"]
-               if res == null then return null
-               return new ISODate.from_string(res.to_s)
+               var res = json.get_or_null("updated_at")
+               if res isa String then return new ISODate.from_string(res)
+               return null
+       end
+
+       # Set updated_at.
+       fun updated_at=(updated_at: nullable ISODate) do
+               if updated_at == null then
+                       json["updated_at"] = null
+               else
+                       json["updated_at"] = updated_at.to_s
+               end
        end
 
        # Close time in ISODate format (if any).
        fun closed_at: nullable ISODate do
-               var res = json["closed_at"]
-               if res == null then return null
-               return new ISODate.from_string(res.to_s)
+               var res = json.get_or_null("closed_at")
+               if res isa String then return new ISODate.from_string(res)
+               return null
+       end
+
+       # Set closed_at.
+       fun closed_at=(closed_at: nullable ISODate) do
+               if closed_at == null then
+                       json["closed_at"] = null
+               else
+                       json["closed_at"] = closed_at.to_s
+               end
        end
 end
 
@@ -1003,19 +1234,38 @@ abstract class Comment
                return new User.from_json(api, json["user"].as(JsonObject))
        end
 
+       # Set user
+       fun user=(user: User) do json["user"] = user.json
+
        # Creation time in ISODate format.
        fun created_at: ISODate do
-               return new ISODate.from_string(json["created_at"].to_s)
+               return new ISODate.from_string(json["created_at"].as(String))
        end
 
+       # Set created_at
+       fun created_at=(created_at: ISODate) do json["created_at"] = created_at.to_s
+
        # Last update time in ISODate format (if any).
        fun updated_at: nullable ISODate do
-               if not json.has_key("updated_at") then return null
-               return new ISODate.from_string(json["updated_at"].to_s)
+               var res = json.get_or_null("updated_at")
+               if res isa String then return new ISODate.from_string(res)
+               return null
+       end
+
+       # Set updated_at.
+       fun updated_at=(updated_at: nullable ISODate) do
+               if updated_at == null then
+                       json["updated_at"] = null
+               else
+                       json["updated_at"] = updated_at.to_s
+               end
        end
 
        # Comment body text.
-       fun body: String do return json["body"].to_s
+       fun body: String do return json["body"].as(String)
+
+       # Set body
+       fun body=(body: String) do json["body"] = body
 
        # Does the comment contain an acknowledgement (+1)
        fun is_ack: Bool
@@ -1032,27 +1282,37 @@ class CommitComment
 
        # Commented commit.
        fun commit: Commit do
-               return api.load_commit(repo, json["commit_id"].to_s).as(not null)
+               return api.load_commit(repo, json["commit_id"].as(String)).as(not null)
        end
 
+       # Set commit
+       fun commit=(commit: Commit) do json["commit_id"] = commit.json
+
        # Position of the comment on the line.
        fun position: nullable String do
-               if not json.has_key("position") then return null
-               var res = json["position"]
-               if res == null then return null
-               return res.to_s
+               var res = json.get_or_null("position")
+               if res isa String then return res
+               return null
        end
 
+       # Set position.
+       fun position=(position: nullable String) do json["position"] = position
+
        # Line of the comment.
        fun line: nullable String do
-               if not json.has_key("line") then return null
-               var res = json["line"]
-               if res == null then return null
-               return res.to_s
+               var res = json.get_or_null("line")
+               if res isa String then return res
+               return null
        end
 
+       # Set line.
+       fun line=(line: nullable String) do json["line"] = line
+
        # Path of the commented file.
-       fun path: String do return json["path"].to_s
+       fun path: String do return json["path"].as(String)
+
+       # Set path.
+       fun path=(path: String) do json["path"] = path
 end
 
 # Comments made on Github issue and pull request pages.
@@ -1072,7 +1332,10 @@ class IssueComment
        end
 
        # Link to the issue document on API.
-       fun issue_url: String do return json["issue_url"].to_s
+       fun issue_url: String do return json["issue_url"].as(String)
+
+       # Set issue_url.
+       fun issue_url=(issue_url: String) do json["issue_url"] = issue_url
 end
 
 # Comments made on Github pull request diffs.
@@ -1092,25 +1355,46 @@ class ReviewComment
        end
 
        # Link to the pull request on API.
-       fun pull_request_url: String do return json["pull_request_url"].to_s
+       fun pull_request_url: String do return json["pull_request_url"].as(String)
+
+       # Set pull_request_url.
+       fun pull_request_url=(pull_request_url: String) do json["pull_request_url"] = pull_request_url
 
        # Diff hunk.
-       fun diff_hunk: String do return json["diff_hunk"].to_s
+       fun diff_hunk: String do return json["diff_hunk"].as(String)
+
+       # Set diff_hunk.
+       fun diff_hunk=(diff_hunk: String) do json["diff_hunk"] = diff_hunk
 
        # Path of commented file.
-       fun path: String do return json["path"].to_s
+       fun path: String do return json["path"].as(String)
+
+       # Set path.
+       fun path=(path: String) do json["path"] = path
 
        # Position of the comment on the file.
-       fun position: Int do return json["position"].to_s.to_i
+       fun position: Int do return json["position"].as(Int)
+
+       # Set position.
+       fun position=(position: Int) do json["position"] = position
 
        # Original position in the diff.
-       fun original_position: Int do return json["original_position"].to_s.to_i
+       fun original_position: Int do return json["original_position"].as(Int)
+
+       # Set original_position.
+       fun original_position=(original_position: Int) do json["original_position"] = original_position
 
        # Commit referenced by this comment.
-       fun commit_id: String do return json["commit_id"].to_s
+       fun commit_id: String do return json["commit_id"].as(String)
+
+       # Set commit_id.
+       fun commit_id=(commit_id: String) do json["commit_id"] = commit_id
 
        # Original commit id.
-       fun original_commit_id: String do return json["original_commit_id"].to_s
+       fun original_commit_id: String do return json["original_commit_id"].as(String)
+
+       # Set original_commit_id.
+       fun original_commit_id=(commit_id: String) do json["original_commit_id"] = commit_id
 end
 
 # An event that occurs on a Github `Issue`.
@@ -1136,52 +1420,103 @@ class IssueEvent
                return new Issue.from_json(api, repo, json["issue"].as(JsonObject))
        end
 
+       # Set issue.
+       fun issue=(issue: Issue) do json["issue"] = issue.json
+
        # User that initiated the event.
        fun actor: User do
                return new User.from_json(api, json["actor"].as(JsonObject))
        end
 
+       # Set actor.
+       fun actor=(actor: User) do json["actor"] = actor.json
+
        # Creation time in ISODate format.
        fun created_at: ISODate do
-               return new ISODate.from_string(json["created_at"].to_s)
+               return new ISODate.from_string(json["created_at"].as(String))
        end
 
+       # Set created_at.
+       fun created_at=(created_at: ISODate) do json["created_at"] = created_at.to_s
+
        # Event descriptor.
-       fun event: String do return json["event"].to_s
+       fun event: String do return json["event"].as(String)
+
+       # Set event.
+       fun event=(event: String) do json["event"] = event
 
        # Commit linked to this event (if any).
        fun commit_id: nullable String do
-               var res = json["commit_id"]
-               if res == null then return null
-               return res.to_s
+               var res = json.get_or_null("commit_id")
+               if res isa String then return res
+               return null
        end
 
+       # Set commit_id.
+       fun commit_id=(commit_id: nullable String) do json["commit_id"] = commit_id
+
        # Label linked to this event (if any).
        fun labl: nullable Label do
-               var res = json["label"]
-               if not res isa JsonObject then return null
-               return new Label.from_json(api, repo, res)
+               var res = json.get_or_null("label")
+               if res isa JsonObject then return new Label.from_json(api, repo, res)
+               return null
+       end
+
+       # Set labl.
+       fun labl=(labl: nullable Label) do
+               if labl == null then
+                       json["labl"] = null
+               else
+                       json["labl"] = labl.json
+               end
        end
 
        # User linked to this event (if any).
        fun assignee: nullable User do
-               var res = json["assignee"]
-               if not res isa JsonObject then return null
-               return new User.from_json(api, res)
+               var res = json.get_or_null("assignee")
+               if res isa JsonObject then return new User.from_json(api, res)
+               return null
+       end
+
+       # Set assignee.
+       fun assignee=(assignee: nullable User) do
+               if assignee == null then
+                       json["assignee"] = null
+               else
+                       json["assignee"] = assignee.json
+               end
        end
 
        # Milestone linked to this event (if any).
        fun milestone: nullable Milestone do
-               var res = json["milestone"]
-               if not res isa JsonObject then return null
-               return new Milestone.from_json(api, repo, res)
+               var res = json.get_or_null("milestone")
+               if res isa JsonObject then return new Milestone.from_json(api, repo, res)
+               return null
+       end
+
+       # Set milestone.
+       fun milestone=(milestone: nullable User) do
+               if milestone == null then
+                       json["milestone"] = null
+               else
+                       json["milestone"] = milestone.json
+               end
        end
 
        # Rename linked to this event (if any).
        fun rename: nullable RenameAction do
-               var res = json["rename"]
-               if res == null then return null
-               return new RenameAction(res.as(JsonObject))
+               var res = json.get_or_null("rename")
+               if res isa JsonObject then return new RenameAction(res)
+               return null
+       end
+
+       # Set rename.
+       fun rename=(rename: nullable User) do
+               if rename == null then
+                       json["rename"] = null
+               else
+                       json["rename"] = rename.json
+               end
        end
 end
 
@@ -1192,10 +1527,16 @@ class RenameAction
        var json: JsonObject
 
        # Name before renaming.
-       fun from: String do return json["from"].to_s
+       fun from: String do return json["from"].as(String)
+
+       # Set from.
+       fun from=(from: String) do json["from"] = from
 
        # Name after renaming.
-       fun to: String do return json["to"].to_s
+       fun to: String do return json["to"].as(String)
+
+       # Set to.
+       fun to=(to: String) do json["to"] = to
 end
 
 # Contributors list with additions, deletions, and commit counts.
@@ -1225,12 +1566,21 @@ class ContributorStats
                return new User.from_json(api, json["author"].as(JsonObject))
        end
 
+       # Set author.
+       fun author=(author: User) do json["author"] = author.json
+
        # Total number of commit.
-       fun total: Int do return json["total"].to_s.to_i
+       fun total: Int do return json["total"].as(Int)
+
+       # Set total.
+       fun total=(total: Int) do json["total"] = total
 
        # Are of weeks of activity with detailed statistics.
        fun weeks: JsonArray do return json["weeks"].as(JsonArray)
 
+       # Set weeks.
+       fun weeks=(weeks: JsonArray) do json["weeks"] = weeks
+
        # ContributorStats can be compared on the total amount of commits.
        redef fun <(o) do return total < o.total
 end
@@ -1244,5 +1594,8 @@ class GithubFile
        var json: JsonObject
 
        # File name.
-       fun filename: String do return json["filename"].to_s
+       fun filename: String do return json["filename"].as(String)
+
+       # Set filename.
+       fun filename=(filename: String) do json["filename"] = filename
 end