Finds the module a page.ex defines, without running the file.
The source is parsed with Code.string_to_quoted!/2 and its top-level
defmodule is read from the syntax tree. Nothing is evaluated, so a page
file can't run code at router compile time, and the router doesn't depend
on the page being compiled first.
A page file must contain exactly one top-level defmodule with a literal
name. Modules nested inside it are fine.
Summary
Functions
Like resolve!/1, for source code already in memory. file is only used
in error messages.
Reads file and returns the module it defines.
True when file contains use <module>, ... with key among the
options, read from the syntax tree without running the file.
Functions
Like resolve!/1, for source code already in memory. file is only used
in error messages.
iex> Xenia.Routes.PageModule.from_source!("defmodule MyAppWeb.HomePage do end")
MyAppWeb.HomePageReads file and returns the module it defines.
Raises ArgumentError when the file has no top-level module, more than
one, or a name that isn't a literal alias. Syntax errors raise as usual.
True when file contains use <module>, ... with key among the
options, read from the syntax tree without running the file.
iex> source = "defmodule L do\n use Xenia.Layout, on_mount: Auth\nend"
iex> Xenia.Routes.PageModule.uses_option?(source, Xenia.Layout, :on_mount, "nofile")
true