fix(treesitter)!: remove deprecated legacy injection format

4 files changed, 12 insertions, 124 deletions

diff --git a/runtime/doc/news.txt b/runtime/doc/news.txt
index e9c493479c..2396f4f5a2 100644
--- a/runtime/doc/news.txt
+++ b/runtime/doc/news.txt
@@ -202,6 +202,8 @@ The following deprecated functions or APIs were removed.
 • Vimball support is removed.
   - :Vimuntar command removed.
 
+• Support for legacy treesitter injection queries is removed.
+
 ==============================================================================
 DEPRECATIONS                                                *news-deprecations*
 
diff --git a/runtime/lua/vim/treesitter/languagetree.lua b/runtime/lua/vim/treesitter/languagetree.lua
index b4c9027794..4b419c4744 100644
--- a/runtime/lua/vim/treesitter/languagetree.lua
+++ b/runtime/lua/vim/treesitter/languagetree.lua
@@ -769,65 +769,6 @@ function LanguageTree:_get_injection(match, metadata)
   return lang, combined, ranges
 end
 
----@private
----@param match table<integer,TSNode>
----@param metadata TSMetadata
----@return string, boolean, Range6[]
-function LanguageTree:_get_injection_deprecated(match, metadata)
-  local lang = nil ---@type string
-  local ranges = {} ---@type Range6[]
-  local combined = metadata.combined ~= nil
-
-  -- Directives can configure how injections are captured as well as actual node captures.
-  -- This allows more advanced processing for determining ranges and language resolution.
-  if metadata.content then
-    local content = metadata.content ---@type any
-
-    -- Allow for captured nodes to be used
-    if type(content) == 'number' then
-      content = { match[content]:range() }
-    end
-
-    if type(content) == 'table' and #content >= 4 then
-      vim.list_extend(ranges, content)
-    end
-  end
-
-  local mlang = metadata.language
-  if mlang ~= nil then
-    assert(type(mlang) == 'string')
-    lang = mlang
-  end
-
-  -- You can specify the content and language together
-  -- using a tag with the language, for example
-  -- @javascript
-  for id, node in pairs(match) do
-    local name = self._injection_query.captures[id]
-
-    -- Lang should override any other language tag
-    if name == 'language' and not lang then
-      lang = vim.treesitter.get_node_text(node, self._source, { metadata = metadata[id] })
-    elseif name == 'combined' then
-      combined = true
-    elseif name == 'content' and #ranges == 0 then
-      ranges[#ranges + 1] = vim.treesitter.get_range(node, self._source, metadata[id])
-      -- Ignore any tags that start with "_"
-      -- Allows for other tags to be used in matches
-    elseif string.sub(name, 1, 1) ~= '_' then
-      if not lang then
-        lang = name
-      end
-
-      if #ranges == 0 then
-        ranges[#ranges + 1] = vim.treesitter.get_range(node, self._source, metadata[id])
-      end
-    end
-  end
-
-  return lang, combined, ranges
-end
-
 --- Gets language injection points by language.
 ---
 --- This is where most of the injection processing occurs.
@@ -852,11 +793,11 @@ function LanguageTree:_get_injections()
       self._injection_query:iter_matches(root_node, self._source, start_line, end_line + 1)
     do
       local lang, combined, ranges = self:_get_injection(match, metadata)
-      if not lang then
-        -- TODO(lewis6991): remove after 0.9 (#20434)
-        lang, combined, ranges = self:_get_injection_deprecated(match, metadata)
+      if lang then
+        add_injection(injections, index, pattern, lang, combined, ranges)
+      else
+        self:_log('match from injection query failed for pattern', pattern)
       end
-      add_injection(injections, index, pattern, lang, combined, ranges)
     end
   end
 
diff --git a/test/functional/treesitter/highlight_spec.lua b/test/functional/treesitter/highlight_spec.lua
index c88c5cd3e5..0528370e2a 100644
--- a/test/functional/treesitter/highlight_spec.lua
+++ b/test/functional/treesitter/highlight_spec.lua
@@ -442,7 +442,7 @@ describe('treesitter highlighting (C)', function()
 
     exec_lua [[
       local parser = vim.treesitter.get_parser(0, "c", {
-        injections = {c = "(preproc_def (preproc_arg) @c) (preproc_function_def value: (preproc_arg) @c)"}
+        injections = {c = '(preproc_def (preproc_arg) @injection.content (#set! injection.language "c")) (preproc_function_def value: (preproc_arg) @injection.content (#set! injection.language "c"))'}
       })
       local highlighter = vim.treesitter.highlighter
       test_hl = highlighter.new(parser, {queries = {c = hl_query}})
@@ -480,7 +480,7 @@ describe('treesitter highlighting (C)', function()
     ]])
 
     exec_lua [[
-      local injection_query = "(preproc_def (preproc_arg) @c) (preproc_function_def value: (preproc_arg) @c)"
+      local injection_query = '(preproc_def (preproc_arg) @injection.content (#set! injection.language "c")) (preproc_function_def value: (preproc_arg) @injection.content (#set! injection.language "c"))'
       vim.treesitter.query.set("c", "highlights", hl_query)
       vim.treesitter.query.set("c", "injections", injection_query)
 
diff --git a/test/functional/treesitter/parser_spec.lua b/test/functional/treesitter/parser_spec.lua
index ae3b0483c5..ae7cf58293 100644
--- a/test/functional/treesitter/parser_spec.lua
+++ b/test/functional/treesitter/parser_spec.lua
@@ -634,7 +634,7 @@ int x = INT_MAX;
         exec_lua([[
         parser = vim.treesitter.get_parser(0, "c", {
           injections = {
-            c = "(preproc_def (preproc_arg) @c) (preproc_function_def value: (preproc_arg) @c)"}})
+            c = '(preproc_def (preproc_arg) @injection.content (#set! injection.language "c")) (preproc_function_def value: (preproc_arg) @injection.content (#set! injection.language "c"))'}})
         parser:parse(true)
         ]])
 
@@ -667,7 +667,7 @@ int x = INT_MAX;
         exec_lua([[
         parser = vim.treesitter.get_parser(0, "c", {
           injections = {
-            c = "(preproc_def (preproc_arg) @c @combined) (preproc_function_def value: (preproc_arg) @c @combined)"}})
+            c = '(preproc_def (preproc_arg) @injection.content (#set! injection.language "c") (#set! injection.combined)) (preproc_function_def value: (preproc_arg) @injection.content (#set! injection.language "c") (#set! injection.combined))'}})
         parser:parse(true)
         ]])
 
@@ -696,67 +696,12 @@ int x = INT_MAX;
       end)
     end)
 
-    describe("when providing parsing information through a directive", function()
-      it("should inject a language", function()
-        exec_lua([=[
-        vim.treesitter.query.add_directive("inject-clang!", function(match, _, _, pred, metadata)
-          metadata.language = "c"
-          metadata.combined = true
-          metadata.content = pred[2]
-        end)
-
-        parser = vim.treesitter.get_parser(0, "c", {
-          injections = {
-            c = "(preproc_def ((preproc_arg) @_c (#inject-clang! @_c)))" ..
-                "(preproc_function_def value: ((preproc_arg) @_a (#inject-clang! @_a)))"}})
-        parser:parse(true)
-        ]=])
-
-        eq("table", exec_lua("return type(parser:children().c)"))
-        eq(2, exec_lua("return #parser:children().c:trees()"))
-        eq({
-          {0, 0, 7, 0},   -- root tree
-          {3, 14, 5, 18}, -- VALUE 123
-                          -- VALUE1 123
-                          -- VALUE2 123
-          {1, 26, 2, 66}  -- READ_STRING(x, y) (char *)read_string((x), (size_t)(y))
-                          -- READ_STRING_OK(x, y) (char *)read_string((x), (size_t)(y))
-        }, get_ranges())
-
-        helpers.feed('ggo<esc>')
-        eq("table", exec_lua("return type(parser:children().c)"))
-        eq(2, exec_lua("return #parser:children().c:trees()"))
-        eq({
-          {0, 0, 8, 0},   -- root tree
-          {4, 14, 6, 18}, -- VALUE 123
-                          -- VALUE1 123
-                          -- VALUE2 123
-          {2, 26, 3, 66}  -- READ_STRING(x, y) (char *)read_string((x), (size_t)(y))
-                          -- READ_STRING_OK(x, y) (char *)read_string((x), (size_t)(y))
-        }, get_ranges())
-      end)
-
-      it("should not inject bad languages", function()
-        exec_lua([=[
-        vim.treesitter.query.add_directive("inject-bad!", function(match, _, _, pred, metadata)
-          metadata.language = "{"
-          metadata.combined = true
-          metadata.content = pred[2]
-        end)
-
-        parser = vim.treesitter.get_parser(0, "c", {
-          injections = {
-            c = "(preproc_function_def value: ((preproc_arg) @_a (#inject-bad! @_a)))"}})
-        ]=])
-      end)
-    end)
-
     describe("when using the offset directive", function()
       it("should shift the range by the directive amount", function()
         exec_lua([[
         parser = vim.treesitter.get_parser(0, "c", {
           injections = {
-            c = "(preproc_def ((preproc_arg) @c (#offset! @c 0 2 0 -1))) (preproc_function_def value: (preproc_arg) @c)"}})
+            c = '(preproc_def ((preproc_arg) @injection.content (#set! injection.language "c") (#offset! @injection.content 0 2 0 -1))) (preproc_function_def value: (preproc_arg) @injection.content (#set! injection.language "c"))'}})
         parser:parse(true)
         ]])
 
@@ -797,7 +742,7 @@ int x = INT_MAX;
     it("should return the correct language tree", function()
       local result = exec_lua([[
       parser = vim.treesitter.get_parser(0, "c", {
-        injections = { c = "(preproc_def (preproc_arg) @c)"}})
+        injections = { c = '(preproc_def (preproc_arg) @injection.content (#set! injection.language "c"))'}})
       parser:parse(true)
 
       local sub_tree = parser:language_for_range({1, 18, 1, 19})