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;;; phpinspect.el --- PHP parsing and completion package -*- lexical-binding: t; -*-
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;; Copyright (C) 2021 Free Software Foundation, Inc
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;; Author: Hugo Thunnissen <devel@hugot.nl>
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;; Keywords: php, languages, tools, convenience
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;; Version: 0
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;; Package-Requires: ((compat "29"))
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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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;; See docstrings for documentation, starting with `phpinspect-mode'.
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;;; Code:
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(require 'cl-lib)
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(require 'json)
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(require 'obarray)
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;; internal dependencies
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(require 'phpinspect-cache)
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(require 'phpinspect-parser)
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(require 'phpinspect-project)
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(require 'phpinspect-util)
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(require 'phpinspect-type)
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(require 'phpinspect-index)
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(require 'phpinspect-class)
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(require 'phpinspect-worker)
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(require 'phpinspect-autoload)
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(require 'phpinspect-imports)
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(require 'phpinspect-buffer)
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(require 'phpinspect-resolvecontext)
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(require 'phpinspect-eldoc)
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(require 'phpinspect-suggest)
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(require 'phpinspect-completion)
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(defvar-local phpinspect--buffer-index nil
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"The result of the last successfull parse + index action
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executed by phpinspect for the current buffer")
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(defvar phpinspect-cache ()
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"In-memory nested key-value store used for caching by
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phpinspect")
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(defvar phpinspect-insert-file-contents-function #'insert-file-contents-literally
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"Function that phpinspect uses to insert file contents into a buffer.")
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(defvar phpinspect-type-filepath-function #'phpinspect-get-class-filepath
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"Function that phpinspect uses to find the filepath of a class by its FQN.")
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(defvar phpinspect-project-root-file-list
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'("composer.json" "composer.lock" ".git" ".svn" ".hg")
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"List of files that could indicate a project root directory.")
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(defsubst phpinspect-cache-project-class (project-root indexed-class)
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(when project-root
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(phpinspect-project-add-class
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(phpinspect--cache-get-project-create (phpinspect--get-or-create-global-cache)
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project-root)
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indexed-class)))
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(defun phpinspect-parse-string-to-bmap (string)
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(with-temp-buffer
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(insert string)
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(let ((context (phpinspect-make-pctx :incremental t
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:bmap (phpinspect-make-bmap))))
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(phpinspect-with-parse-context context
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(phpinspect-parse-current-buffer))
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(phpinspect-pctx-bmap context))))
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(defun phpinspect-after-change-function (start end pre-change-length)
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(when phpinspect-current-buffer
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(phpinspect-buffer-register-edit phpinspect-current-buffer start end pre-change-length)))
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(defun phpinspect--init-mode ()
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"Initialize the phpinspect minor mode for the current buffer."
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(setq phpinspect-current-buffer (phpinspect-make-buffer :buffer (current-buffer)))
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(add-hook 'after-change-functions #'phpinspect-after-change-function)
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(make-local-variable 'company-backends)
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(add-to-list 'company-backends #'phpinspect-company-backend)
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(set (make-local-variable 'eldoc-documentation-function)
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#'phpinspect-eldoc-function)
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(make-local-variable 'eldoc-message-commands)
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(eldoc-add-command 'c-electric-paren)
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(eldoc-add-command 'c-electric-backspace)
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(phpinspect-ensure-worker)
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(phpinspect--after-save-action)
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(add-hook 'after-save-hook #'phpinspect--after-save-action nil 'local))
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(defun phpinspect--after-save-action ()
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"This is intended to be run every time a phpinspect buffer is saved.
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It indexes the entire buffer and updates
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`phpinspect--buffer-index'. The buffer index is merged into the
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project-wide index (stored in `phpinspect-cache') afterwards.
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Assuming that files are only changed from within Emacs, this
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keeps the cache valid. If changes are made outside of Emacs,
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users will have to use \\[phpinspect-purge-cache]."
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(when (and (boundp 'phpinspect-mode) phpinspect-mode)
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(setq phpinspect--buffer-index
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(phpinspect--index-tokens
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(phpinspect-buffer-reparse phpinspect-current-buffer)))
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(let ((imports (alist-get 'imports phpinspect--buffer-index))
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(project (phpinspect--cache-get-project-create
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(phpinspect--get-or-create-global-cache)
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(phpinspect-current-project-root))))
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(dolist (class (alist-get 'classes phpinspect--buffer-index))
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(when class
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(phpinspect-project-add-class project (cdr class))
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(let ((imports (alist-get 'imports (cdr class))))
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(when imports
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(phpinspect-project-enqueue-imports project imports)))))
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(when imports (phpinspect-project-enqueue-imports project imports)))))
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(defun phpinspect--disable-mode ()
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"Clean up the buffer environment for the mode to be disabled."
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(setq phpinspect-current-buffer nil)
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(kill-local-variable 'phpinspect--buffer-project)
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(kill-local-variable 'phpinspect--buffer-index)
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(kill-local-variable 'company-backends)
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(kill-local-variable 'eldoc-documentation-function)
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(kill-local-variable 'eldoc-message-commands))
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(defun phpinspect--mode-function ()
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(if (and (boundp 'phpinspect-mode) phpinspect-mode)
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(phpinspect--init-mode)
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(phpinspect--disable-mode)))
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(define-minor-mode phpinspect-mode
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"A minor mode for intelligent completion for and interaction
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with PHP files.
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To initially index a project, use M-x `phpinspect-index-current-project'
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in a buffer of one of the project files. Project root is detected with
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`phpinspect-project-root-file-list'.
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For completion see the company-mode backend:
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`phpinspect-company-backend'.
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For eldoc see `phpinspect-eldoc-function'.
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For finding/opening class files see
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`phpinspect-find-own-class-file' (bound to \\[phpinspect-find-own-class-file]) and
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`phpinspect-find-class-file' (bound to \\[phpinspect-find-class-file]).
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To automatically add missing use statements for used classes to a
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visited file, use `phpinspect-fix-imports'
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(bound to \\[phpinspect-fix-imports]].)
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Example configuration:
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(defun my-php-personal-hook ()
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;; Assuming you already have company-mode enabled, these settings
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;; add some IDE-like flair to it. This is of course not required, do
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;; with it what you like.
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(setq-local company-minimum-prefix-length 0)
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(setq-local company-tooltip-align-annotations t)
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(setq-local company-idle-delay 0.1)
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;; If you don't have company-mode enabled by default, uncomment this line:
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;; (company-mode)
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;; By default, phpinspect-mode adds itself as a backend to
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;; the `company-backends' of the current buffer. You can completely
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;; disable all other backends with the statement below.
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(setq-local company-backends '(phpinspect-company-backend))
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;; Shortcut to add use statements for classes you use.
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(define-key php-mode-map (kbd \"C-c u\") 'phpinspect-fix-imports)
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;; Shortcuts to quickly search/open files of PHP classes.
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;; You can make these local to php-mode, but making them global
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;; like this makes them work in other modes/filetypes as well, which
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;; can be handy when jumping between templates, config files and PHP code.
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(global-set-key (kbd \"C-c a\") 'phpinspect-find-class-file)
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(global-set-key (kbd \"C-c c\") 'phpinspect-find-own-class-file)
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;; Enable phpinspect-mode
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(phpinspect-mode))
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(add-hook 'php-mode-hook #'my-php-personal-hook)
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;; End example configuration."
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:after-hook (phpinspect--mode-function))
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(defun phpinspect--buffer-index (buffer)
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(with-current-buffer buffer phpinspect--buffer-index))
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(defun phpinspect--suggest-at-point ()
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(phpinspect--log "Entering suggest at point. Point: %d" (point))
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(phpinspect-completion-query-execute
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(phpinspect-make-completion-query
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:buffer phpinspect-current-buffer
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:completion-point (phpinspect--determine-completion-point)
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:point (point))))
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(defun phpinspect-company-backend (command &optional arg &rest _ignored)
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"A company backend for PHP."
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(interactive (list 'interactive))
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(cond
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((eq command 'interactive)
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(company-begin-backend 'company-phpinspect-backend))
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((eq command 'prefix)
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(cond ((looking-back "->[A-Za-z_0-9-]*")
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(let ((match (match-string 0)))
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(substring match 2 (length match))))
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((looking-back "::[A-Za-z_0-9-]*")
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(let ((match (match-string 0)))
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(substring match 2 (length match))))
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((looking-back "\\$[A-Za-z_0-9-]*")
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(let ((match (match-string 0)))
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(substring match 1 (length match))))))
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((eq command 'post-completion)
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(when (eq 'function (phpinspect--completion-kind
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(phpinspect--completion-list-get-metadata
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phpinspect--last-completion-list
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arg)))
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(insert "(")))
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((eq command 'candidates)
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(catch 'phpinspect-parse-interrupted
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(let ((completion-list (phpinspect--suggest-at-point))
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(candidates))
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(setq candidates
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(seq-filter (lambda (completion)
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(when completion
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(string-match (concat "^" (regexp-quote arg))
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completion)))
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(phpinspect--completion-list-strings
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completion-list)))
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(setq phpinspect--last-completion-list completion-list)
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candidates)))
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((eq command 'annotation)
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(concat " " (phpinspect--completion-annotation
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(phpinspect--completion-list-get-metadata
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phpinspect--last-completion-list
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arg))))
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((eq command 'kind)
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(phpinspect--completion-kind
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(phpinspect--completion-list-get-metadata
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phpinspect--last-completion-list
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arg)))
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((eq command 'meta)
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(phpinspect--completion-meta
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(phpinspect--completion-list-get-metadata phpinspect--last-completion-list arg)))))
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(defun phpinspect--get-or-create-global-cache ()
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"Get `phpinspect-cache'.
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If its value is nil, it is created and then returned."
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(or phpinspect-cache
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(setq phpinspect-cache (phpinspect--make-cache))))
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(defun phpinspect-purge-cache ()
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"Assign a fresh, empty cache object to `phpinspect-cache'.
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This effectively purges any cached code information from all
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currently opened projects."
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(interactive)
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(when phpinspect-cache
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;; Allow currently known cached projects to cleanup after themselves
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(maphash (lambda (_ project)
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(phpinspect-project-purge project))
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(phpinspect--cache-projects phpinspect-cache)))
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;; Assign a fresh cache object
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(setq phpinspect-cache (phpinspect--make-cache)))
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(defsubst phpinspect-insert-file-contents (&rest args)
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"Call `phpinspect-insert-file-contents-function' with ARGS as arguments."
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(apply phpinspect-insert-file-contents-function args))
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(defun phpinspect-get-all-fqns (&optional filter)
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"Return a list of all FQNS congruent with FILTER in the currently active project.
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FILTER must be nil or the symbol 'own' if FILTER is 'own', only
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fully qualified names from the project's source, and not its
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dependencies, are returned."
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(let* ((project (phpinspect--cache-get-project-create
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(phpinspect--get-or-create-global-cache)
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(phpinspect-current-project-root)))
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(autoloader (phpinspect-project-autoload project)))
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(let ((fqns))
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(maphash (lambda (type _) (push (symbol-name type) fqns))
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(if (eq 'own filter)
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(phpinspect-autoloader-own-types autoloader)
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(phpinspect-autoloader-types autoloader)))
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fqns)))
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;;;###autoload
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(defun phpinspect-find-class-file (fqn)
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"`find-file', but for FQNs of PHP classes.
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When called interactively, presents the the user with a list of
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available FQNs in a project. This may require
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`phpinspect-index-current-project' to have run once for the
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project directory before it can be used."
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(interactive (list (phpinspect--make-type
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:name (completing-read "Class: " (phpinspect-get-all-fqns)))))
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(find-file (phpinspect-type-filepath fqn)))
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(defun phpinspect-find-own-class-file (fqn)
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"`phpinspect-find-class-file', but for non-vendored classes.
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When called interactively, presents the user with a list of
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available FQNs for classes in the current project, which aren't
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located in \"vendor\" folder."
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(interactive (list (phpinspect--make-type
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:name
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(completing-read "Class: " (phpinspect-get-all-fqns 'own)))))
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(find-file (phpinspect-type-filepath fqn)))
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(defsubst phpinspect-type-filepath (fqn)
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"Call `phpinspect-type-filepath-function' with FQN as argument."
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(funcall phpinspect-type-filepath-function fqn))
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(defun phpinspect-get-class-filepath (class &optional index-new)
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"Retrieve filepath to CLASS definition file.
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when INDEX-NEW is non-nil, new files are added to the index
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before the search is executed."
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(let* ((project (phpinspect--cache-get-project-create
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(phpinspect--get-or-create-global-cache)
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(phpinspect-current-project-root))))
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(phpinspect-project-get-type-filepath project class index-new)))
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(defun phpinspect-index-current-project ()
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"Index all available FQNs in the current project."
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(interactive)
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(let* ((project (phpinspect--cache-get-project-create
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(phpinspect--get-or-create-global-cache)
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(phpinspect-current-project-root)))
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(autoloader (phpinspect-project-autoload project)))
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;; Update display so that it is clear to the user that emacs is
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;; responsive. Otherwise the autoloader refresh thread hogging the cpu will
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;; make it look like emacs is not responsive, especially when M-x uses some
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;; kind of completion framework, in which case the completion popup will
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;; appear frozen while the thread is executing.
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(redisplay)
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(phpinspect-autoloader-refresh autoloader)))
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(provide 'phpinspect)
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;;; phpinspect.el ends here
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