84 lines
3.7 KiB
EmacsLisp
84 lines
3.7 KiB
EmacsLisp
; .clang_complete file loading
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; Sets the arguments for company-clang based on a project-specific text file.
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; START Based on the Sarcasm/irony-mode compilation database code.
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(defun company-mode/find-clang-complete-file ()
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(when buffer-file-name
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(let ((dir (locate-dominating-file buffer-file-name ".clang_complete")))
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(when dir
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(concat (file-name-as-directory dir) ".clang_complete")))))
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(defun company-mode/load-clang-complete-file (cc-file)
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"Load the flags from CC-FILE, one flag per line."
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(let ((invocation-dir (expand-file-name (file-name-directory cc-file)))
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(case-fold-search nil)
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compile-flags)
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(with-temp-buffer
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(insert-file-contents cc-file)
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; Replace relative paths with absolute paths (by @trishume)
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;(goto-char (point-min))
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(while (re-search-forward "\\(-I\\|-isystem\n\\)\\(\\S-\\)" nil t)
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(replace-match (format "%s%s" (match-string 1) (expand-file-name (match-string 2) invocation-dir))))
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; Turn lines into a list
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(setq compile-flags
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;; remove whitespaces at the end of each line, if any
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(mapcar #'(lambda (line)
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(if (string-match "[ \t]+$" line)
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(replace-match "" t t line)
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line))
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(split-string (buffer-string) "\n" t))))
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compile-flags))
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; END Back to things written by @trishume
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(defun company-mode/more-than-prefix-guesser ()
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(unless company-clang-arguments
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(let* ((cc-file (company-mode/find-clang-complete-file))
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(flags (when cc-file (company-mode/load-clang-complete-file cc-file))))
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(when flags (setq-local company-clang-arguments flags))))
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(company-clang-guess-prefix))
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; START Based on the built in flycheck-clang c++ checker
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(eval-after-load 'flycheck
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'(progn
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(flycheck-define-checker c/c++-company
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"A C/C++ syntax checker using parameters from clang-complete"
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:command ("clang"
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"-fsyntax-only"
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"-fno-color-diagnostics" ; Do not include color codes in output
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"-fno-caret-diagnostics" ; Do not visually indicate the source
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; location
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"-fno-diagnostics-show-option" ; Do not show the corresponding
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; warning group
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"-x" (eval
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(pcase major-mode
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(`c++-mode "c++")
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(`c-mode "c")))
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(option-list "" company-clang-arguments concat)
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source)
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:error-patterns
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((error line-start
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(message "In file included from") " " (file-name) ":" line ":"
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line-end)
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(info line-start (file-name) ":" line ":" column
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": note: " (optional (message)) line-end)
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(warning line-start (file-name) ":" line ":" column
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": warning: " (optional (message)) line-end)
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(error line-start (file-name) ":" line ":" column
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": " (or "fatal error" "error") ": " (optional (message)) line-end))
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:error-filter
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(lambda (errors)
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(let ((errors (flycheck-sanitize-errors errors)))
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(dolist (err errors)
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;; Clang will output empty messages for #error/#warning pragmas without
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;; messages. We fill these empty errors with a dummy message to get
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;; them past our error filtering
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(setf (flycheck-error-message err)
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(or (flycheck-error-message err) "no message")))
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(flycheck-fold-include-errors errors "In file included from")))
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:modes (c-mode c++-mode)
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:next-checkers ((warning . c/c++-cppcheck)))
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(add-to-list 'flycheck-checkers 'c/c++-company)))
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; END
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