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authorMichael Davis2022-04-13 01:57:07 +0000
committerBlaž Hrastnik2022-04-13 05:28:51 +0000
commit4836bb38d3c13c9f1ebd3533bc35a54f80c7e118 (patch)
treef39037bc640054e67da289caa9bf433122d2f429 /runtime/queries/heex/injections.scm
parent9d095e0fdc78ad42c033193dd980b6218c9484d6 (diff)
add tree-sitter-heex
HEEx is a templating engine on top of Elixir's EEx templating language specific to HTML that is included in Phoenix.LiveView (though I think the plan is to eventually include it in base Phoenix). It's a superset of EEx with some additional features like components and slots. The injections don't work perfectly because the Elixir grammar is newline sensitive (the _terminator rule). See https://github.com/elixir-lang/tree-sitter-elixir/issues/24 for more information.
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+; https://github.com/connorlay/tree-sitter-heex/blob/592e22292a367312c35e13de7fdb888f029981d6/queries/injections.scm
+; directives are standalone tags like '<%= @x %>'
+;
+; partial_expression_values are elixir code that is part of an expression that
+; spans multiple directive nodes, so they must be combined. For example:
+; <%= if true do %>
+; <p>hello, tree-sitter!</p>
+; <% end %>
+((directive (partial_expression_value) @injection.content)
+ (#set! injection.language "elixir")
+ (#set! injection.include-children)
+ (#set! injection.combined))
+
+; Regular expression_values do not need to be combined
+((directive (expression_value) @injection.content)
+ (#set! injection.language "elixir"))
+
+; expressions live within HTML tags, and do not need to be combined
+; <link href={ Routes.static_path(..) } />
+((expression (expression_value) @injection.content)
+ (#set! injection.language "elixir"))