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VSCode snippet to help with creation of Elixir GenServers and addition of handle_call and handle_cast and related client API functions
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{ | |
"GenServer Template": { | |
"scope": "elixir", | |
"prefix": "gs", | |
"body": [ | |
"defmodule ${1}.${2} do", | |
"\tuse GenServer", | |
"", | |
"\t# Client", | |
"", | |
"\tdef start_link(default) when is_list(default) do", | |
"\t\tGenServer.start_link(__MODULE__, default)", | |
"\tend", | |
"", | |
"\tdef push(pid, element) do", | |
"\t\tGenServer.cast(pid, {:push, element})", | |
"\tend", | |
"", | |
"\tdef pop(pid) do", | |
"\t\tGenServer.call(pid, :pop)", | |
"\tend", | |
"", | |
"\t# Server (callbacks)", | |
"", | |
"\t@impl true", | |
"\tdef init(stack) do", | |
"\t\t{:ok, stack}", | |
"\tend", | |
"", | |
"\t@impl true", | |
"\tdef handle_call(:pop, _from, [head | tail]) do", | |
"\t\t{:reply, head, tail}", | |
"\tend", | |
"", | |
"\t@impl true", | |
"\tdef handle_cast({:push, element}, state) do", | |
"\t\t{:noreply, [element | state]}", | |
"\tend", | |
"end", | |
"", | |
"# Remember to add this to your supervision tree, e.g.", | |
"# children = [", | |
"# ${1].${2}", | |
"# ...", | |
"#]", | |
"", | |
"# Supervisor.start_link(children, strategy: :one_for_all)" | |
], | |
"description": "GenServer Template" | |
}, | |
"GenServer Cast": { | |
"prefix": "gscast", | |
"body": [ | |
"def ${1:function}(${2:args}) do", | |
"\tGenServer.cast(__MODULE__, {:${1},{${2}}})", | |
"end", | |
"", | |
"@impl true", | |
"def handle_cast({:${1}, {${2}}}, state) do", | |
"\t{:noreply, state}", | |
"end", | |
"${0}" | |
], | |
"description": "GenServer cast function" | |
}, | |
"GenServer Call": { | |
"prefix": "gscall", | |
"body": [ | |
"def ${1:function}(${2:args}) do", | |
"\tGenServer.call(__MODULE__, {:${1},{${2}}})", | |
"end", | |
"", | |
"@impl true", | |
"def handle_call({:${1}, {${2}}}, state) do", | |
"\t{:reply, state}", | |
"end", | |
"${0}" | |
], | |
"description": "GenServer call function" | |
} | |
} |
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