Add support for Temple

lib/still/preprocessor.ex

@@ -51,13 +51,15 @@ defmodule Still.Preprocessor do
     Save,
     AddLayout,
     AddContent,
-    Image
+    Image,
+    Temple
   }
 
   @default_preprocessors %{
     ".slim" => [AddContent, EEx, Frontmatter, Slime, OutputPath, AddLayout, Save],
     ".slime" => [AddContent, EEx, Frontmatter, Slime, OutputPath, AddLayout, Save],
     ".eex" => [AddContent, EEx, Frontmatter, OutputPath, AddLayout, Save],
+    ".exs" => [AddContent, Frontmatter, Temple, EEx, OutputPath, AddLayout, Save],
     ".css" => [AddContent, EEx, CSSMinify, OutputPath, URLFingerprinting, AddLayout, Save],
     ".js" => [AddContent, EEx, JS, OutputPath, URLFingerprinting, AddLayout, Save],
     ".md" => [AddContent, EEx, Frontmatter, Markdown, OutputPath, AddLayout, Save],
@@ -141,11 +143,33 @@ defmodule Still.Preprocessor do
     end)
   end
 
-  @callback render(SourceFile.t()) :: SourceFile.t()
+  @type render_result ::
+          {:cont, SourceFile.t()}
+          | {:halt, SourceFile.t()}
+          | SourceFile.t()
+
+  @callback render(SourceFile.t()) :: render_result()
+
   @callback after_render(SourceFile.t()) :: SourceFile.t()
 
   @optional_callbacks render: 1, after_render: 1
 
+  @doc """
+  Identity function to silence pattern matching warnings from
+  Dialyzer.
+
+  Each preprocessor implements the `run/1` and `render/1` functions, so Dialyzer
+  knows whether all the branches in `case` statement are essential. They never
+  are, and most processors only return one type. So there's always going to a
+  warning there that's not helpful. Using this identity function that's only
+  defined once, we force Dialyzer to accept that those branches in `case` are
+  necessary.
+  """
+  @spec handle_return(result :: render_result()) :: render_result()
+  def handle_return(value) do
+    value
+  end
+
   defmacro __using__(_opts) do
     quote do
       @behaviour Still.Preprocessor
@@ -162,6 +186,7 @@ defmodule Still.Preprocessor do
       def run(source_file, next_preprocessors) do
         source_file
         |> render()
+        |> Still.Preprocessor.handle_return()
         |> case do
           {:cont, source_file} ->
             source_file
@@ -200,19 +225,18 @@ defmodule Still.Preprocessor do
 
       Returns the resulting #{Still.SourceFile}.
       """
-      @spec after_render(SourceFile.t()) :: SourceFile.t()
+      @impl true
       def after_render(source_file), do: source_file
 
       @doc """
       Runs the current preprocessor and invokes the next one.
 
       Returns the resulting #{Still.SourceFile}.
       """
-      @spec render(SourceFile.t()) ::
-              {:cont, SourceFile.t()} | {:halt, SourceFile.t()} | SourceFile.t()
+      @impl true
       def render(source_file), do: source_file
 
-      defoverridable render: 1, after_render: 1
+      defoverridable(Still.Preprocessor)
     end
   end
 end

lib/still/preprocessor/temple.ex

@@ -0,0 +1,11 @@
+defmodule Still.Preprocessor.Temple do
+  alias Still.{Preprocessor, SourceFile}
+
+  use Preprocessor
+
+  @impl true
+  def render(%{content: content} = file) do
+    {content, _} = Code.eval_string(content, [], __ENV__)
+    %SourceFile{file | content: content, extension: ".html"}
+  end
+end

mix.exs

@@ -71,6 +71,7 @@ defmodule Still.MixProject do
       {:plug, "~> 1.10"},
       {:plug_cowboy, "~> 2.3"},
       {:slime, "~> 1.2"},
+      {:temple, "~> 0.6.0-rc.0"},
       {:timex, "~> 3.5"},
       {:yaml_elixir, "~> 2.4"}
     ]

mix.lock

@@ -6,7 +6,7 @@
   "cowboy": {:hex, :cowboy, "2.8.0", "f3dc62e35797ecd9ac1b50db74611193c29815401e53bac9a5c0577bd7bc667d", [:rebar3], [{:cowlib, "~> 2.9.1", [hex: :cowlib, repo: "hexpm", optional: false]}, {:ranch, "~> 1.7.1", [hex: :ranch, repo: "hexpm", optional: false]}], "hexpm", "4643e4fba74ac96d4d152c75803de6fad0b3fa5df354c71afdd6cbeeb15fac8a"},
   "cowlib": {:hex, :cowlib, "2.9.1", "61a6c7c50cf07fdd24b2f45b89500bb93b6686579b069a89f88cb211e1125c78", [:rebar3], [], "hexpm", "e4175dc240a70d996156160891e1c62238ede1729e45740bdd38064dad476170"},
   "credo": {:hex, :credo, "1.5.5", "e8f422026f553bc3bebb81c8e8bf1932f498ca03339856c7fec63d3faac8424b", [:mix], [{:bunt, "~> 0.2.0", [hex: :bunt, repo: "hexpm", optional: false]}, {:file_system, "~> 0.2.8", [hex: :file_system, repo: "hexpm", optional: false]}, {:jason, "~> 1.0", [hex: :jason, repo: "hexpm", optional: false]}], "hexpm", "dd8623ab7091956a855dc9f3062486add9c52d310dfd62748779c4315d8247de"},
-  "dialyxir": {:hex, :dialyxir, "1.0.0", "6a1fa629f7881a9f5aaf3a78f094b2a51a0357c843871b8bc98824e7342d00a5", [:mix], [{:erlex, ">= 0.2.6", [hex: :erlex, repo: "hexpm", optional: false]}], "hexpm", "aeb06588145fac14ca08d8061a142d52753dbc2cf7f0d00fc1013f53f8654654"},
+  "dialyxir": {:hex, :dialyxir, "1.1.0", "c5aab0d6e71e5522e77beff7ba9e08f8e02bad90dfbeffae60eaf0cb47e29488", [:mix], [{:erlex, ">= 0.2.6", [hex: :erlex, repo: "hexpm", optional: false]}], "hexpm", "07ea8e49c45f15264ebe6d5b93799d4dd56a44036cf42d0ad9c960bc266c0b9a"},
   "earmark_parser": {:hex, :earmark_parser, "1.4.10", "6603d7a603b9c18d3d20db69921527f82ef09990885ed7525003c7fe7dc86c56", [:mix], [], "hexpm", "8e2d5370b732385db2c9b22215c3f59c84ac7dda7ed7e544d7c459496ae519c0"},
   "erlex": {:hex, :erlex, "0.2.6", "c7987d15e899c7a2f34f5420d2a2ea0d659682c06ac607572df55a43753aa12e", [:mix], [], "hexpm", "2ed2e25711feb44d52b17d2780eabf998452f6efda104877a3881c2f8c0c0c75"},
   "eternal": {:hex, :eternal, "1.2.2", "d1641c86368de99375b98d183042dd6c2b234262b8d08dfd72b9eeaafc2a1abd", [:mix], [], "hexpm", "2c9fe32b9c3726703ba5e1d43a1d255a4f3f2d8f8f9bc19f094c7cb1a7a9e782"},
@@ -40,6 +40,7 @@
   "slime": {:hex, :slime, "1.2.1", "71e036056051f0a6fae136af34eaa1322e8e11cdd2da3a56196fd31bca34dd49", [:mix], [{:neotoma, "~> 1.7", [hex: :neotoma, repo: "hexpm", optional: false]}], "hexpm", "298568e64291fed4eb690be094f6c46400daa03b594bab34fcaa0167e139c263"},
   "ssl_verify_fun": {:hex, :ssl_verify_fun, "1.1.6", "cf344f5692c82d2cd7554f5ec8fd961548d4fd09e7d22f5b62482e5aeaebd4b0", [:make, :mix, :rebar3], [], "hexpm", "bdb0d2471f453c88ff3908e7686f86f9be327d065cc1ec16fa4540197ea04680"},
   "telemetry": {:hex, :telemetry, "0.4.2", "2808c992455e08d6177322f14d3bdb6b625fbcfd233a73505870d8738a2f4599", [:rebar3], [], "hexpm", "2d1419bd9dda6a206d7b5852179511722e2b18812310d304620c7bd92a13fcef"},
+  "temple": {:hex, :temple, "0.6.0-rc.0", "2febf687a87901629e9ad994200a55e0d23b700413e7cb0afc26716ad485b52f", [:mix], [{:phoenix, ">= 0.0.0", [hex: :phoenix, repo: "hexpm", optional: true]}], "hexpm", "408988b116a5f7f53ae822aa844e7f6dae28a21e4038e21b5fcddc51493e5c0d"},
   "timex": {:hex, :timex, "3.6.2", "845cdeb6119e2fef10751c0b247b6c59d86d78554c83f78db612e3290f819bc2", [:mix], [{:combine, "~> 0.10", [hex: :combine, repo: "hexpm", optional: false]}, {:gettext, "~> 0.10", [hex: :gettext, repo: "hexpm", optional: false]}, {:tzdata, "~> 0.1.8 or ~> 0.5 or ~> 1.0.0", [hex: :tzdata, repo: "hexpm", optional: false]}], "hexpm", "26030b46199d02a590be61c2394b37ea25a3664c02fafbeca0b24c972025d47a"},
   "tzdata": {:hex, :tzdata, "1.0.5", "69f1ee029a49afa04ad77801febaf69385f3d3e3d1e4b56b9469025677b89a28", [:mix], [{:hackney, "~> 1.0", [hex: :hackney, repo: "hexpm", optional: false]}], "hexpm", "55519aa2a99e5d2095c1e61cc74c9be69688f8ab75c27da724eb8279ff402a5a"},
   "unicode_util_compat": {:hex, :unicode_util_compat, "0.7.0", "bc84380c9ab48177092f43ac89e4dfa2c6d62b40b8bd132b1059ecc7232f9a78", [:rebar3], [], "hexpm", "25eee6d67df61960cf6a794239566599b09e17e668d3700247bc498638152521"},

priv/site/_includes/main.exs

@@ -0,0 +1,31 @@
+use Temple
+
+temple do
+  div class: "main" do
+    div class: "content" do
+      h1 class: "fancy-title" do
+        div class: "visually-hidden" do
+          "Still"
+        end
+      end
+
+      div class: "logo-container" do
+        responsive_image("_includes/logo.png", class: "logo", aria_hidden: true)
+      end
+
+      p class: "lead" do
+        "A composable elixir static site builder"
+      end
+
+      div class: "info" do
+        link(@env, "Docs", to: "https://hexdocs.pm/still", class: "cta")
+        |> to_string()
+        link(@env, "GitHub", to: "https://github.com/still-ex/still", class: "cta")
+        |> to_string()
+      end
+    end
+    include(@env, "_includes/marquee.exs")
+    div class: "overlay"
+    responsive_image("_includes/main.jpg", class: "cover", aria_hidden: true)
+  end
+end

priv/site/_includes/marquee.exs

@@ -0,0 +1,17 @@
+---
+text: "Tonight on display: still (featuring elixir)"
+---
+
+use Temple
+
+temple do
+  div class: "marquee" do
+    div class: "content" do
+      for _ <- 1..5 do
+        span do
+          @text
+        end
+      end
+    end
+  end
+end

priv/site/index.slime

@@ -2,7 +2,7 @@
 layout: _layout.slime
 ---
 
-= include(@env, "_includes/main.slime")
+= include(@env, "_includes/main.exs")
 = include(@env, "_includes/manifesto.slime")
 = include(@env, "_includes/getting_started.slime")
 = include(@env, "_includes/community.slime")