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Description
LSP client configuration
local java_cmds = vim.api.nvim_create_augroup('java_cmds', { clear = true })
local cache_vars = {}
local root_files = {
'.git',
'mvnw',
'gradlew',
'pom.xml',
'build.gradle',
}
local features = {
-- change this to `true` to enable codelens
codelens = true,
-- change this to `true` if you have `nvim-dap`,
-- `java-test` and `java-debug-adapter` installed
debugger = false,
}
local function get_jdtls_paths()
if cache_vars.paths then
return cache_vars.paths
end
local path = {}
path.data_dir = vim.fn.stdpath('cache') .. '/nvim-jdtls'
local jdtls_install = require('mason-registry')
.get_package('jdtls')
:get_install_path()
path.java_agent = jdtls_install .. '/lombok.jar'
path.launcher_jar = vim.fn.glob(jdtls_install .. '/plugins/org.eclipse.equinox.launcher_*.jar')
if vim.fn.has('mac') == 1 then
path.platform_config = jdtls_install .. '/config_mac'
elseif vim.fn.has('unix') == 1 then
path.platform_config = jdtls_install .. '/config_linux'
elseif vim.fn.has('win32') == 1 then
path.platform_config = jdtls_install .. '/config_win'
end
path.bundles = {}
---
-- Include java-test bundle if present
---
local java_test_path = require('mason-registry')
.get_package('java-test')
:get_install_path()
local java_test_bundle = vim.split(
vim.fn.glob(java_test_path .. '/extension/server/*.jar'),
'\n'
)
if java_test_bundle[1] ~= '' then
vim.list_extend(path.bundles, java_test_bundle)
end
---
-- Include java-debug-adapter bundle if present
---
local java_debug_path = require('mason-registry')
.get_package('java-debug-adapter')
:get_install_path()
local java_debug_bundle = vim.split(
vim.fn.glob(java_debug_path .. '/extension/server/com.microsoft.java.debug.plugin-*.jar'),
'\n'
)
if java_debug_bundle[1] ~= '' then
vim.list_extend(path.bundles, java_debug_bundle)
end
---
-- Useful if you're starting jdtls with a Java version that's
-- different from the one the project uses.
---
path.runtimes = {
-- Note: the field `name` must be a valid `ExecutionEnvironment`,
-- you can find the list here:
-- https://github.com/eclipse/eclipse.jdt.ls/wiki/Running-the-JAVA-LS-server-from-the-command-line#initialize-request
--
-- This example assume you are using sdkman: https://sdkman.io
-- {
-- name = 'JavaSE-17',
-- path = vim.fn.expand('~/.sdkman/candidates/java/17.0.6-tem'),
-- },
-- {
-- name = 'JavaSE-18',
-- path = vim.fn.expand('~/.sdkman/candidates/java/18.0.2-amzn'),
-- },
}
cache_vars.paths = path
return path
end
local function enable_codelens(bufnr)
pcall(vim.lsp.codelens.refresh)
vim.api.nvim_create_autocmd('BufWritePost', {
buffer = bufnr,
group = java_cmds,
desc = 'refresh codelens',
callback = function()
pcall(vim.lsp.codelens.refresh)
end,
})
end
local function enable_debugger(bufnr)
require('jdtls').setup_dap({ hotcodereplace = 'auto' })
require('jdtls.dap').setup_dap_main_class_configs()
local opts = { buffer = bufnr }
vim.keymap.set('n', '<leader>df', "<cmd>lua require('jdtls').test_class()<cr>", opts)
vim.keymap.set('n', '<leader>dn', "<cmd>lua require('jdtls').test_nearest_method()<cr>", opts)
end
local function jdtls_on_attach(client, bufnr)
if features.debugger then
enable_debugger(bufnr)
end
if features.codelens then
enable_codelens(bufnr)
end
-- The following mappings are based on the suggested usage of nvim-jdtls
-- https://github.com/mfussenegger/nvim-jdtls#usage
local opts = { buffer = bufnr }
vim.keymap.set('n', '<leader>o', "<cmd>lua require('jdtls').organize_imports()<cr>", opts)
vim.keymap.set('n', 'crv', "<cmd>lua require('jdtls').extract_variable()<cr>", opts)
vim.keymap.set('x', 'crv', "<esc><cmd>lua require('jdtls').extract_variable(true)<cr>", opts)
vim.keymap.set('n', 'crc', "<cmd>lua require('jdtls').extract_constant()<cr>", opts)
vim.keymap.set('x', 'crc', "<esc><cmd>lua require('jdtls').extract_constant(true)<cr>", opts)
vim.keymap.set('x', 'crm', "<esc><Cmd>lua require('jdtls').extract_method(true)<cr>", opts)
vim.keymap.set('n', '<leader>bt', "<cmd>lua require('jdtls').javap()<cr>", opts)
end
local function jdtls_setup(event)
local jdtls = require('jdtls')
local path = get_jdtls_paths()
local data_dir = path.data_dir .. '/' .. vim.fn.fnamemodify(vim.fn.getcwd(), ':p:h:t')
if cache_vars.capabilities == nil then
jdtls.extendedClientCapabilities.resolveAdditionalTextEditsSupport = true
local ok_cmp, cmp_lsp = pcall(require, 'cmp_nvim_lsp')
cache_vars.capabilities = vim.tbl_deep_extend(
'force',
vim.lsp.protocol.make_client_capabilities(),
ok_cmp and cmp_lsp.default_capabilities() or {}
)
end
-- The command that starts the language server
-- See: https://github.com/eclipse/eclipse.jdt.ls#running-from-the-command-line
local cmd = {
-- 💀
'java',
'-Declipse.application=org.eclipse.jdt.ls.core.id1',
'-Dosgi.bundles.defaultStartLevel=4',
'-Declipse.product=org.eclipse.jdt.ls.core.product',
'-Dlog.protocol=true',
'-Dlog.level=ALL',
'-javaagent:' .. path.java_agent,
'-Xms1g',
'--add-modules=ALL-SYSTEM',
'--add-opens',
'java.base/java.util=ALL-UNNAMED',
'--add-opens',
'java.base/java.lang=ALL-UNNAMED',
-- 💀
'-jar',
path.launcher_jar,
-- 💀
'-configuration',
path.platform_config,
-- 💀
'-data',
data_dir,
}
local lsp_settings = {
java = {
-- jdt = {
-- ls = {
-- vmargs = "-XX:+UseParallelGC -XX:GCTimeRatio=4 -XX:AdaptiveSizePolicyWeight=90 -Dsun.zip.disableMemoryMapping=true -Xmx1G -Xms100m"
-- }
-- },
eclipse = {
downloadSources = true,
},
configuration = {
updateBuildConfiguration = 'interactive',
runtimes = path.runtimes,
},
maven = {
downloadSources = true,
},
implementationsCodeLens = {
enabled = true,
},
referencesCodeLens = {
enabled = true,
},
-- inlayHints = {
-- parameterNames = {
-- enabled = 'all' -- literals, all, none
-- }
-- },
format = {
enabled = true,
-- settings = {
-- profile = 'asdf'
-- },
}
},
signatureHelp = {
enabled = true,
},
completion = {
favoriteStaticMembers = {
'org.hamcrest.MatcherAssert.assertThat',
'org.hamcrest.Matchers.*',
'org.hamcrest.CoreMatchers.*',
'org.junit.jupiter.api.Assertions.*',
'java.util.Objects.requireNonNull',
'java.util.Objects.requireNonNullElse',
'org.mockito.Mockito.*',
},
},
contentProvider = {
preferred = 'fernflower',
},
extendedClientCapabilities = jdtls.extendedClientCapabilities,
sources = {
organizeImports = {
starThreshold = 9999,
staticStarThreshold = 9999,
}
},
codeGeneration = {
toString = {
template = '${object.className}{${member.name()}=${member.value}, ${otherMembers}}',
},
useBlocks = true,
},
}
-- This starts a new client & server,
-- or attaches to an existing client & server depending on the `root_dir`.
jdtls.start_or_attach({
cmd = cmd,
settings = lsp_settings,
on_attach = jdtls_on_attach,
capabilities = cache_vars.capabilities,
root_dir = jdtls.setup.find_root(root_files),
flags = {
allow_incremental_sync = true,
},
init_options = {
bundles = path.bundles,
},
})
end
vim.api.nvim_create_autocmd('FileType', {
group = java_cmds,
pattern = { 'java' },
desc = 'Setup jdtls',
callback = jdtls_setup,
})Eclipse.jdt.ls version
1.43.9
Steps to Reproduce
- Create
HelloWorld.java
public class HelloWorld {
public static void foo() {
System.out.println("Hello, World!");
}
public static void main(String[] args) {
foo();
}
}- Move cursor to the
public static void foo() {line - Run your LSP code action command.
Code actions:
1: Change signature for 'foo'
2: Move 'foo()'...
3: Inline Method
4: Add Javadoc comment
5: Organize imports
6: Generate toString()
7: Override/Implement Methods...
8: Change modifiers to final where possible
Type number and <Enter> or click with the mouse (q or empty cancels): 1
- Choose option 1.
I checked out the java_apply_refactoring_command function and printed out the contents of the command argument where I don't see a command.signature, probably leading to the error.
{
arguments = { "changeSignature", {
context = {
diagnostics = {},
triggerKind = 1
},
range = {
["end"] = {
character = 23,
line = 1
},
start = {
character = 23,
line = 1
}
},
textDocument = {
uri = "file:///[path]/HelloWorld.java"
}
} },
command = "java.action.applyRefactoringCommand",
title = "Change signature for 'foo'"
} Expected Result
Function signature prompt appears.
Actual Result
Error executing vim.schedule lua callback: ...are/nvim/site/pack/packer/start/nvim-jdtls/lua/jdtls.lua:550: attempt to index local 'signature' (a nil value)
stack traceback:
...are/nvim/site/pack/packer/start/nvim-jdtls/lua/jdtls.lua:550: in function 'fn'
.../neovim/0.10.3/share/nvim/runtime/lua/vim/lsp/client.lua:878: in function '_exec_cmd'
...lar/neovim/0.10.3/share/nvim/runtime/lua/vim/lsp/buf.lua:757: in function 'apply_action'
...lar/neovim/0.10.3/share/nvim/runtime/lua/vim/lsp/buf.lua:796: in function 'handler'
.../neovim/0.10.3/share/nvim/runtime/lua/vim/lsp/client.lua:687: in function ''
vim/_editor.lua: in function <vim/_editor.lua:0>
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