473 lines
22 KiB
EmacsLisp
473 lines
22 KiB
EmacsLisp
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;;; lsp-csharp.el --- description -*- lexical-binding: t; -*-
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;; Copyright (C) 2019 Jostein Kjønigsen, Saulius Menkevicius
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;; Author: Saulius Menkevicius <saulius.menkevicius@fastmail.com>
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;; Keywords:
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;; This program is free software; you can redistribute it and/or modify
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;; it under the terms of the GNU General Public License as published by
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;; the Free Software Foundation, either version 3 of the License, or
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;; (at your option) any later version.
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;; This program is distributed in the hope that it will be useful,
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;; but WITHOUT ANY WARRANTY; without even the implied warranty of
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;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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;; GNU General Public License for more details.
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;; You should have received a copy of the GNU General Public License
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;; along with this program. If not, see <https://www.gnu.org/licenses/>.
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;;; Commentary:
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;; lsp-csharp client
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;;; Code:
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(require 'lsp-mode)
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(require 'gnutls)
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(require 'f)
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(defgroup lsp-csharp nil
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"LSP support for C#, using the Omnisharp Language Server.
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Version 1.34.3 minimum is required."
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:group 'lsp-mode
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:link '(url-link "https://github.com/OmniSharp/omnisharp-roslyn"))
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(defgroup lsp-csharp-omnisharp nil
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"LSP support for C#, using the Omnisharp Language Server.
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Version 1.34.3 minimum is required."
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:group 'lsp-mode
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:link '(url-link "https://github.com/OmniSharp/omnisharp-roslyn")
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:package-version '(lsp-mode . "8.0.1"))
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(defcustom lsp-csharp-server-install-dir
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(f-join lsp-server-install-dir "omnisharp-roslyn/")
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"Installation directory for OmniSharp Roslyn server."
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:group 'lsp-csharp-omnisharp
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:type 'directory)
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(defcustom lsp-csharp-server-path
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nil
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"The path to the OmniSharp Roslyn language-server binary.
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Set this if you have the binary installed or have it built yourself."
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:group 'lsp-csharp-omnisharp
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:type '(string :tag "Single string value or nil"))
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(defcustom lsp-csharp-test-run-buffer-name
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"*lsp-csharp test run*"
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"The name of buffer used for outputting lsp-csharp test run results."
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:group 'lsp-csharp-omnisharp
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:type 'string)
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(defcustom lsp-csharp-solution-file
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nil
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"Solution to load when starting the server.
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Usually this is to be set in your .dir-locals.el on the project root directory."
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:group 'lsp-csharp-omnisharp
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:type 'string)
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(defcustom lsp-csharp-omnisharp-roslyn-download-url
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(concat "https://github.com/omnisharp/omnisharp-roslyn/releases/latest/download/"
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(cond ((eq system-type 'windows-nt)
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; On Windows we're trying to avoid a crash starting 64bit .NET PE binaries in
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; Emacs by using x86 version of omnisharp-roslyn on older (<= 26.4) versions
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; of Emacs. See https://lists.nongnu.org/archive/html/bug-gnu-emacs/2017-06/msg00893.html"
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(if (and (string-match "^x86_64-.*" system-configuration)
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(version<= "26.4" emacs-version))
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"omnisharp-win-x64.zip"
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"omnisharp-win-x86.zip"))
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((eq system-type 'darwin)
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(if (string-match "aarch64-.*" system-configuration)
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"omnisharp-osx-arm64-net6.0.zip"
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"omnisharp-osx-x64-net6.0.zip"))
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((and (eq system-type 'gnu/linux)
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(or (eq (string-match "^x86_64" system-configuration) 0)
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(eq (string-match "^i[3-6]86" system-configuration) 0)))
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"omnisharp-linux-x64-net6.0.zip")
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(t "omnisharp-mono.zip")))
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"Automatic download url for omnisharp-roslyn."
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:group 'lsp-csharp-omnisharp
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:type 'string)
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(defcustom lsp-csharp-omnisharp-roslyn-store-path
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(f-join lsp-csharp-server-install-dir "latest" "omnisharp-roslyn.zip")
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"The path where omnisharp-roslyn .zip archive will be stored."
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:group 'lsp-csharp-omnisharp
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:type 'file)
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(defcustom lsp-csharp-omnisharp-roslyn-binary-path
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(f-join lsp-csharp-server-install-dir "latest" (if (eq system-type 'windows-nt)
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"OmniSharp.exe"
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"OmniSharp"))
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"The path where omnisharp-roslyn binary after will be stored."
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:group 'lsp-csharp-omnisharp
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:type 'file)
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(defcustom lsp-csharp-omnisharp-roslyn-server-dir
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(f-join lsp-csharp-server-install-dir "latest" "omnisharp-roslyn")
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"The path where omnisharp-roslyn .zip archive will be extracted."
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:group 'lsp-csharp-omnisharp
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:type 'file)
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(lsp-dependency
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'omnisharp-roslyn
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`(:download :url lsp-csharp-omnisharp-roslyn-download-url
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:decompress :zip
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:store-path lsp-csharp-omnisharp-roslyn-store-path
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:binary-path lsp-csharp-omnisharp-roslyn-binary-path
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:set-executable? t)
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'(:system "OmniSharp"))
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(defun lsp-csharp--omnisharp-download-server (_client callback error-callback _update?)
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"Download zip package for omnisharp-roslyn and install it.
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Will invoke CALLBACK on success, ERROR-CALLBACK on error."
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(lsp-package-ensure 'omnisharp-roslyn callback error-callback))
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(defun lsp-csharp--language-server-path ()
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"Resolve path to use to start the server."
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(let ((executable-name (if (eq system-type 'windows-nt)
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"OmniSharp.exe"
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"OmniSharp")))
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(or (and lsp-csharp-server-path
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(executable-find lsp-csharp-server-path))
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(executable-find executable-name)
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(lsp-package-path 'omnisharp-roslyn))))
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(defun lsp-csharp-open-project-file ()
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"Open corresponding project file (.csproj) for the current file."
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(interactive)
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(-let* ((project-info-req (lsp-make-omnisharp-project-information-request :file-name (buffer-file-name)))
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(project-info (lsp-request "o#/project" project-info-req))
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((&omnisharp:ProjectInformation :ms-build-project) project-info)
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((&omnisharp:MsBuildProject :path) ms-build-project))
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(find-file path)))
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(defun lsp-csharp--get-buffer-code-elements ()
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"Retrieve code structure by calling into the /v2/codestructure endpoint.
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Returns :elements from omnisharp:CodeStructureResponse."
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(-let* ((code-structure (lsp-request "o#/v2/codestructure"
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(lsp-make-omnisharp-code-structure-request :file-name (buffer-file-name))))
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((&omnisharp:CodeStructureResponse :elements) code-structure))
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elements))
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(defun lsp-csharp--inspect-code-elements-recursively (fn elements)
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"Invoke FN for every omnisharp:CodeElement found recursively in ELEMENTS."
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(seq-each
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(lambda (el)
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(funcall fn el)
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(-let (((&omnisharp:CodeElement :children) el))
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(lsp-csharp--inspect-code-elements-recursively fn children)))
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elements))
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(defun lsp-csharp--collect-code-elements-recursively (predicate elements)
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"Flatten the omnisharp:CodeElement tree in ELEMENTS matching PREDICATE."
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(let ((results nil))
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(lsp-csharp--inspect-code-elements-recursively (lambda (el)
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(when (funcall predicate el)
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(setq results (cons el results))))
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elements)
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results))
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(lsp-defun lsp-csharp--l-c-within-range (l c (&omnisharp:Range :start :end))
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"Determine if L (line) and C (column) are within RANGE."
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(-let* (((&omnisharp:Point :line start-l :column start-c) start)
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((&omnisharp:Point :line end-l :column end-c) end))
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(or (and (= l start-l) (>= c start-c) (or (> end-l start-l) (<= c end-c)))
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(and (> l start-l) (< l end-l))
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(and (= l end-l) (<= c end-c)))))
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(defun lsp-csharp--code-element-stack-on-l-c (l c elements)
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"Return omnisharp:CodeElement stack at L (line) and C (column) in ELEMENTS tree."
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(when-let ((matching-element (seq-find (lambda (el)
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(-when-let* (((&omnisharp:CodeElement :ranges) el)
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((&omnisharp:RangeList :full?) ranges))
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(lsp-csharp--l-c-within-range l c full?)))
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elements)))
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(-let (((&omnisharp:CodeElement :children) matching-element))
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(cons matching-element (lsp-csharp--code-element-stack-on-l-c l c children)))))
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(defun lsp-csharp--code-element-stack-at-point ()
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"Return omnisharp:CodeElement stack at point as a list."
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(let ((pos-line (plist-get (lsp--cur-position) :line))
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(pos-col (plist-get (lsp--cur-position) :character)))
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(lsp-csharp--code-element-stack-on-l-c pos-line
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pos-col
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(lsp-csharp--get-buffer-code-elements))))
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(lsp-defun lsp-csharp--code-element-test-method-p (element)
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"Return test method name and test framework for a given ELEMENT."
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(when element
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(-when-let* (((&omnisharp:CodeElement :properties) element)
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((&omnisharp:CodeElementProperties :test-method-name? :test-framework?) properties))
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(list test-method-name? test-framework?))))
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(defun lsp-csharp--reset-test-buffer (present-buffer)
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"Create new or reuse an existing test result output buffer.
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PRESENT-BUFFER will make the buffer be presented to the user."
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(with-current-buffer (get-buffer-create lsp-csharp-test-run-buffer-name)
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(compilation-mode)
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(read-only-mode)
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(let ((inhibit-read-only t))
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(erase-buffer)))
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(when present-buffer
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(display-buffer lsp-csharp-test-run-buffer-name)))
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(defun lsp-csharp--start-tests (test-method-framework test-method-names)
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"Run test(s) identified by TEST-METHOD-NAMES using TEST-METHOD-FRAMEWORK."
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(if (and test-method-framework test-method-names)
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(let ((request-message (lsp-make-omnisharp-run-tests-in-class-request
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:file-name (buffer-file-name)
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:test-frameworkname test-method-framework
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:method-names (vconcat test-method-names))))
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(lsp-csharp--reset-test-buffer t)
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(lsp-session-set-metadata "last-test-method-framework" test-method-framework)
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(lsp-session-set-metadata "last-test-method-names" test-method-names)
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(lsp-request-async "o#/v2/runtestsinclass"
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request-message
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(-lambda ((&omnisharp:RunTestResponse))
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(message "lsp-csharp: Test run has started"))))
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(message "lsp-csharp: No test methods to run")))
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(defun lsp-csharp--test-message (message)
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"Emit a MESSAGE to lsp-csharp test run buffer."
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(when-let ((existing-buffer (get-buffer lsp-csharp-test-run-buffer-name))
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(inhibit-read-only t))
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(with-current-buffer existing-buffer
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(save-excursion
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(goto-char (point-max))
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(insert message "\n")))))
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(defun lsp-csharp-run-test-at-point ()
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"Start test run at current point (if any)."
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(interactive)
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(let* ((stack (lsp-csharp--code-element-stack-at-point))
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(element-on-point (car (last stack)))
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(test-method (lsp-csharp--code-element-test-method-p element-on-point))
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(test-method-name (car test-method))
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(test-method-framework (car (cdr test-method))))
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(lsp-csharp--start-tests test-method-framework (list test-method-name))))
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(defun lsp-csharp-run-all-tests-in-buffer ()
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"Run all test methods in the current buffer."
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(interactive)
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(let* ((elements (lsp-csharp--get-buffer-code-elements))
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(test-methods (lsp-csharp--collect-code-elements-recursively 'lsp-csharp--code-element-test-method-p elements))
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(test-method-framework (car (cdr (lsp-csharp--code-element-test-method-p (car test-methods)))))
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(test-method-names (mapcar (lambda (method)
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(car (lsp-csharp--code-element-test-method-p method)))
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test-methods)))
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(lsp-csharp--start-tests test-method-framework test-method-names)))
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(defun lsp-csharp-run-test-in-buffer ()
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"Run selected test in current buffer."
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(interactive)
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(when-let* ((elements (lsp-csharp--get-buffer-code-elements))
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(test-methods (lsp-csharp--collect-code-elements-recursively 'lsp-csharp--code-element-test-method-p elements))
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(test-method-framework (car (cdr (lsp-csharp--code-element-test-method-p (car test-methods)))))
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(test-method-names (mapcar (lambda (method)
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(car (lsp-csharp--code-element-test-method-p method)))
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test-methods))
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(selected-test-method-name (lsp--completing-read "Select test:" test-method-names 'identity)))
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(lsp-csharp--start-tests test-method-framework (list selected-test-method-name))))
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(defun lsp-csharp-run-last-tests ()
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"Re-run test(s) that were run last time."
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(interactive)
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(if-let ((last-test-method-framework (lsp-session-get-metadata "last-test-method-framework"))
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(last-test-method-names (lsp-session-get-metadata "last-test-method-names")))
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(lsp-csharp--start-tests last-test-method-framework last-test-method-names)
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(message "lsp-csharp: No test method(s) found to be ran previously on this workspace")))
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(lsp-defun lsp-csharp--handle-os-error (_workspace (&omnisharp:ErrorMessage :file-name :text))
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"Handle the 'o#/error' (interop) notification displaying a message."
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(lsp-warn "%s: %s" file-name text))
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(lsp-defun lsp-csharp--handle-os-testmessage (_workspace (&omnisharp:TestMessageEvent :message))
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"Handle the 'o#/testmessage and display test message on test output buffer."
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(lsp-csharp--test-message message))
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(lsp-defun lsp-csharp--handle-os-testcompleted (_workspace (&omnisharp:DotNetTestResult
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:method-name
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:outcome
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:error-message
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:error-stack-trace
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:standard-output
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:standard-error))
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"Handle the 'o#/testcompleted' message from the server.
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Will display the results of the test on the lsp-csharp test output buffer."
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(let ((passed (string-equal "passed" outcome)))
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(lsp-csharp--test-message
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(format "[%s] %s "
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(propertize (upcase outcome) 'font-lock-face (if passed 'success 'error))
|
||
|
|
method-name))
|
||
|
|
|
||
|
|
(unless passed
|
||
|
|
(lsp-csharp--test-message error-message)
|
||
|
|
|
||
|
|
(when error-stack-trace
|
||
|
|
(lsp-csharp--test-message error-stack-trace))
|
||
|
|
|
||
|
|
(unless (seq-empty-p standard-output)
|
||
|
|
(lsp-csharp--test-message "STANDARD OUTPUT:")
|
||
|
|
(seq-doseq (stdout-line standard-output)
|
||
|
|
(lsp-csharp--test-message stdout-line)))
|
||
|
|
|
||
|
|
(unless (seq-empty-p standard-error)
|
||
|
|
(lsp-csharp--test-message "STANDARD ERROR:")
|
||
|
|
(seq-doseq (stderr-line standard-error)
|
||
|
|
(lsp-csharp--test-message stderr-line))))))
|
||
|
|
|
||
|
|
(lsp-defun lsp-csharp--action-client-find-references ((&Command :arguments?))
|
||
|
|
"Read first argument from ACTION as Location and display xrefs for that location
|
||
|
|
using the `textDocument/references' request."
|
||
|
|
(-if-let* (((&Location :uri :range) (lsp-seq-first arguments?))
|
||
|
|
((&Range :start range-start) range)
|
||
|
|
(find-refs-params (append (lsp--text-document-position-params (list :uri uri) range-start)
|
||
|
|
(list :context (list :includeDeclaration json-false))))
|
||
|
|
(locations-found (lsp-request "textDocument/references" find-refs-params)))
|
||
|
|
(lsp-show-xrefs (lsp--locations-to-xref-items locations-found) nil t)
|
||
|
|
(message "No references found")))
|
||
|
|
|
||
|
|
(lsp-register-client
|
||
|
|
(make-lsp-client :new-connection
|
||
|
|
(lsp-stdio-connection
|
||
|
|
#'(lambda ()
|
||
|
|
(append
|
||
|
|
(list (lsp-csharp--language-server-path) "-lsp")
|
||
|
|
(when lsp-csharp-solution-file
|
||
|
|
(list "-s" (expand-file-name lsp-csharp-solution-file)))))
|
||
|
|
#'(lambda ()
|
||
|
|
(when-let ((binary (lsp-csharp--language-server-path)))
|
||
|
|
(f-exists? binary))))
|
||
|
|
:activation-fn (lsp-activate-on "csharp")
|
||
|
|
:server-id 'omnisharp
|
||
|
|
:priority -1
|
||
|
|
:action-handlers (ht ("omnisharp/client/findReferences" 'lsp-csharp--action-client-find-references))
|
||
|
|
:notification-handlers (ht ("o#/projectadded" 'ignore)
|
||
|
|
("o#/projectchanged" 'ignore)
|
||
|
|
("o#/projectremoved" 'ignore)
|
||
|
|
("o#/packagerestorestarted" 'ignore)
|
||
|
|
("o#/msbuildprojectdiagnostics" 'ignore)
|
||
|
|
("o#/packagerestorefinished" 'ignore)
|
||
|
|
("o#/unresolveddependencies" 'ignore)
|
||
|
|
("o#/error" 'lsp-csharp--handle-os-error)
|
||
|
|
("o#/testmessage" 'lsp-csharp--handle-os-testmessage)
|
||
|
|
("o#/testcompleted" 'lsp-csharp--handle-os-testcompleted)
|
||
|
|
("o#/projectconfiguration" 'ignore)
|
||
|
|
("o#/projectdiagnosticstatus" 'ignore))
|
||
|
|
:download-server-fn #'lsp-csharp--omnisharp-download-server))
|
||
|
|
|
||
|
|
;;
|
||
|
|
;; Alternative "csharp-ls" language server support
|
||
|
|
;; see https://github.com/razzmatazz/csharp-language-server
|
||
|
|
;;
|
||
|
|
(lsp-defun lsp-csharp--cls-metadata-uri-handler (uri)
|
||
|
|
"Handle `csharp:/(metadata)' uri from csharp-ls server.
|
||
|
|
|
||
|
|
'csharp/metadata' request is issued to retrieve metadata from the server.
|
||
|
|
A cache file is created on project root dir that stores this metadata and
|
||
|
|
filename is returned so lsp-mode can display this file."
|
||
|
|
|
||
|
|
(-when-let* ((metadata-req (lsp-make-csharp-ls-c-sharp-metadata
|
||
|
|
:text-document (lsp-make-text-document-identifier :uri uri)))
|
||
|
|
(metadata (lsp-request "csharp/metadata" metadata-req))
|
||
|
|
((&csharp-ls:CSharpMetadataResponse :project-name
|
||
|
|
:assembly-name
|
||
|
|
:symbol-name
|
||
|
|
:source) metadata)
|
||
|
|
(filename (f-join ".cache"
|
||
|
|
"lsp-csharp"
|
||
|
|
"metadata"
|
||
|
|
"projects" project-name
|
||
|
|
"assemblies" assembly-name
|
||
|
|
(concat symbol-name ".cs")))
|
||
|
|
(file-location (expand-file-name filename (lsp-workspace-root)))
|
||
|
|
(metadata-file-location (concat file-location ".metadata-uri"))
|
||
|
|
(path (f-dirname file-location)))
|
||
|
|
|
||
|
|
(unless (file-exists-p file-location)
|
||
|
|
(unless (file-directory-p path)
|
||
|
|
(make-directory path t))
|
||
|
|
|
||
|
|
(with-temp-file metadata-file-location
|
||
|
|
(insert uri))
|
||
|
|
|
||
|
|
(with-temp-file file-location
|
||
|
|
(insert source)))
|
||
|
|
|
||
|
|
file-location))
|
||
|
|
|
||
|
|
(defun lsp-csharp--cls-before-file-open (_workspace)
|
||
|
|
"Set `lsp-buffer-uri' variable after C# file is open from *.metadata-uri file."
|
||
|
|
|
||
|
|
(let ((metadata-file-name (concat buffer-file-name ".metadata-uri")))
|
||
|
|
(setq-local lsp-buffer-uri
|
||
|
|
(when (file-exists-p metadata-file-name)
|
||
|
|
(with-temp-buffer (insert-file-contents metadata-file-name)
|
||
|
|
(buffer-string))))))
|
||
|
|
|
||
|
|
(defun lsp-csharp--cls-make-launch-cmd ()
|
||
|
|
"Return command line to invoke csharp-ls."
|
||
|
|
|
||
|
|
;; emacs-28.1 on macOS has an issue
|
||
|
|
;; that it launches processes using posix_spawn but does not reset sigmask properly
|
||
|
|
;; thus causing dotnet runtime to lockup awaiting a SIGCHLD signal that never comes
|
||
|
|
;; from subprocesses that quit
|
||
|
|
;;
|
||
|
|
;; as a workaround we will wrap csharp-ls invocation in "/bin/ksh -c" on macos
|
||
|
|
;; so it launches with proper sigmask
|
||
|
|
;;
|
||
|
|
;; see https://lists.gnu.org/archive/html/emacs-devel/2022-02/msg00461.html
|
||
|
|
|
||
|
|
(let ((startup-wrapper (cond ((and (eq 'darwin system-type)
|
||
|
|
(version= "28.1" emacs-version))
|
||
|
|
(list "/bin/ksh" "-c"))
|
||
|
|
|
||
|
|
(t nil)))
|
||
|
|
|
||
|
|
(csharp-ls-exec (or (executable-find "csharp-ls")
|
||
|
|
(f-join (or (getenv "USERPROFILE") (getenv "HOME"))
|
||
|
|
".dotnet" "tools" "csharp-ls")))
|
||
|
|
|
||
|
|
(solution-file-params (when lsp-csharp-solution-file
|
||
|
|
(list "-s" lsp-csharp-solution-file))))
|
||
|
|
(append startup-wrapper
|
||
|
|
(list csharp-ls-exec)
|
||
|
|
solution-file-params)))
|
||
|
|
|
||
|
|
(defun lsp-csharp--cls-test-csharp-ls-present ()
|
||
|
|
"Return non-nil if dotnet tool csharp-ls is installed globally."
|
||
|
|
(string-match-p "csharp-ls"
|
||
|
|
(shell-command-to-string "dotnet tool list -g")))
|
||
|
|
|
||
|
|
(defun lsp-csharp--cls-download-server (_client callback error-callback update?)
|
||
|
|
"Install/update csharp-ls language server using `dotnet tool'.
|
||
|
|
|
||
|
|
Will invoke CALLBACK or ERROR-CALLBACK based on result.
|
||
|
|
Will update if UPDATE? is t"
|
||
|
|
(lsp-async-start-process
|
||
|
|
callback
|
||
|
|
error-callback
|
||
|
|
"dotnet" "tool" (if update? "update" "install") "-g" "csharp-ls"))
|
||
|
|
|
||
|
|
(lsp-register-client
|
||
|
|
(make-lsp-client :new-connection (lsp-stdio-connection #'lsp-csharp--cls-make-launch-cmd
|
||
|
|
#'lsp-csharp--cls-test-csharp-ls-present)
|
||
|
|
:priority -2
|
||
|
|
:server-id 'csharp-ls
|
||
|
|
:activation-fn (lsp-activate-on "csharp")
|
||
|
|
:before-file-open-fn #'lsp-csharp--cls-before-file-open
|
||
|
|
:uri-handlers (ht ("csharp" #'lsp-csharp--cls-metadata-uri-handler))
|
||
|
|
:download-server-fn #'lsp-csharp--cls-download-server))
|
||
|
|
|
||
|
|
(lsp-consistency-check lsp-csharp)
|
||
|
|
|
||
|
|
(provide 'lsp-csharp)
|
||
|
|
;;; lsp-csharp.el ends here
|