a lot more stuff

2025-04-17 11:41:32 -05:00
parent 8eaa615596
commit 3094bf2a39
37 changed files with 891 additions and 281 deletions
--- a/after/ftplugin/java.lua
+++ b/after/ftplugin/java.lua
@ -0,0 +1,136 @@
+local misc = require('core.misc')
+local lsp = require('core.lsp.functions')
+local map, auto = misc.map, misc.auto
+
+local jdtls = require('jdtls')
+local jdtls_install = require('mason-registry').get_package('jdtls'):get_install_path()
+
+-- make sure to check if things with 💀 need updating
+local config = {
+  cmd = {
+    'java', -- 💀
+    '-jar', vim.fn.glob(jdtls_install..'/plugins/org.eclipse.equinox.launcher_*.jar'), -- 💀
+    '-configuration', jdtls_install..'/config_linux',
+    '-data', vim.fn.stdpath('cache')..'/nvim-jdtls',
+
+    '--add-modules=ALL-SYSTEM',
+    '--add-opens', 'java.base/java.lang=ALL-UNNAMED',
+    '--add-opens', 'java.base/java.util=ALL-UNNAMED',
+    '-Declipse.application=org.eclipse.jdt.ls.core.id1',
+    '-Declipse.product=org.eclipse.jdt.ls.core.product',
+    '-Dlog.level=ALL',
+    '-Dlog.protocol=true',
+    '-Dosgi.bundles.defaultStartLevel=4',
+    '-Xmx1G',
+  },
+  root_dir = vim.fs.dirname(vim.fs.find({
+    'gradlew',
+    '.git',
+    'mvnw',
+    'settings.gradle', -- Gradle (multi-project)
+    'settings.gradle.kts', -- Gradle (multi-project)
+    'build.xml', -- Ant
+    'pom.xml', -- Maven
+  }, { upward = true })[1]),
+
+  -- don't print out status messages
+  handlers = {
+    ['language/status'] = function() end
+  },
+
+  on_attach = function(_, bufnr)
+    -- add some jdtls specific mappings
+    local opts = { buffer = bufnr }
+    map('n', 'cri', jdtls.organize_imports, opts)
+    map('n', 'crv', jdtls.extract_variable, opts)
+    map('n', 'crc', jdtls.extract_constant, opts)
+    map('x', 'crv', function() jdtls.extract_variable(true) end, opts)
+    map('x', 'crc', function() jdtls.extract_constant(true) end, opts)
+    map('x', 'crm', function() jdtls.extract_method(true) end, opts)
+
+    pcall(vim.lsp.codelens.refresh)
+    auto('BufWritePost', {
+      buffer = bufnr,
+      desc = 'refresh codelens',
+      callback = function()
+        pcall(vim.lsp.codelens.refresh)
+      end
+    })
+  end,
+  capabilities = lsp.capabilities
+}
+
+-- generate the path to the java file(s)
+---@type string|nil
+local cache_path = vim.fs.joinpath(vim.fn.stdpath("cache"), "/JavaVersion.class")
+---@type string|nil
+local src_path = vim.fs.joinpath(vim.fn.stdpath("config"), "/extras/JavaVersion.java")
+
+-- if either path is invalid
+if not cache_path or not src_path then
+  return
+end
+
+--- build a cache of the JavaVersion code
+local function build_cache()
+  -- check if we have javac
+  vim.system({ "javac" }, {}, function(out)
+    if out.code == 127 then
+      cache_path = nil
+      return
+    end
+
+    -- compile our code
+    vim.system({ 'javac', src_path, '-d', vim.fn.stdpath("cache") }, {}, function(out)
+      if out.code ~= 0 then
+        cache_path = nil
+      end
+    end)
+  end)
+end
+
+-- check if we have a compiled version of JavaVersion
+local f, _ = io.open(cache_path, "r")
+if not f then -- if we don't have a cache
+  build_cache()
+else
+  io.close(f)
+end
+
+-- check the java version
+local buffer = {}
+vim.fn.jobstart({
+  config.cmd[1],
+  (cache_path and "JavaVersion") or src_path
+}, {
+    cwd = vim.fn.stdpath("cache"),
+    stdin = nil,
+    on_stdout = function(_, data, _)
+      table.insert(buffer, table.concat(data))
+    end,
+    on_exit = function(_, exit_code, _)
+      local v = vim.version.parse(table.concat(buffer))
+
+      -- if there's an error, no version info, or the java version is
+      -- less than 17 stop the lsp from starting
+      if exit_code ~= 0 then
+        vim.notify(string.format(
+          "java version check failed: exit code %s", exit_code),
+          vim.log.levels.ERROR, { title = misc.appid })
+        return
+      elseif not v then
+        vim.notify("no java version info found", vim.log.levels.ERROR,
+          { title = misc.appid })
+        return
+      elseif v.major < 17 then
+        vim.notify(string.format(
+          "java version %s < 17.0.0 Cannot run jdtls, bailing out",
+          v[1].."."..v[2].."."..v[3]),
+          vim.log.levels.ERROR, { title = misc.appid })
+        return
+      end
+
+      -- start lsp
+      jdtls.start_or_attach(config)
+    end
+  })