Parses PostgREST select parameter into an AST.

Supports field selection, embed preloading with !inner modifier, embed aliasing via alias:name(...), nested embeds, and empty embeds for anti-joins.

Examples

iex> PgRest.Parser.Select.parse("id,name,email")
{:ok, [%{type: :field, name: "id"}, %{type: :field, name: "name"}, %{type: :field, name: "email"}]}

iex> PgRest.Parser.Select.parse("id,posts(id,title)")
{:ok, [%{type: :field, name: "id"}, %{type: :embed, name: "posts", fields: ["id", "title"], inner: false}]}