1 files changed, 67 insertions, 0 deletions
diff --git a/emacs.d/custom/fcuny-flycheck.el b/emacs.d/custom/fcuny-flycheck.el
new file mode 100644
index 0000000..26e9b72
--- /dev/null
+++ b/emacs.d/custom/fcuny-flycheck.el
@@ -0,0 +1,67 @@
+(require 'fcuny-common)
+
+(use-package flycheck
+  :ensure t
+  :custom ((flycheck-idle-change-delay 2)
+           (flycheck-emacs-lisp-load-path 'inherit))
+  :config
+  (progn
+    (use-package flycheck-pos-tip
+      :ensure t
+      :config
+      (flycheck-pos-tip-mode))
+
+    (add-hook 'prog-mode-hook 'flycheck-mode)
+    (setq-default flycheck-disabled-checkers '(emacs-lisp-checkdoc))
+    (setq flycheck-highlighting-mode 'lines)
+    (setq flycheck-check-syntax-automatically '(mode-enabled save))
+
+    (flycheck-define-checker source-check
+      "A syntax checker for python source code in Source, using `check.pex'"
+      :command ("check.pex" source)
+    ;;; errors are reported like this:
+    ;;; E241:ERROR   <file name>:<line> <message>
+      :error-patterns ((error line-start (id (1+ nonl)) ":ERROR" (1+ nonl) ":" line (message) line-end)
+                       (warning line-start (id (1+ nonl)) ":WARNING" (1+ nonl) ":" line (message) line-end))
+      :predicate fcuny/check-source-predicate-python-p
+      :modes (python-mode))
+    (add-to-list 'flycheck-checkers 'source-check)
+
+    (defface fc/flycheck-error
+      '((t (:foreground "#f40000")))
+      "Face for flycheck error feedback in the modeline."
+      :group 'fc/flycheck)
+    (defface fc/flycheck-warning
+      '((t (:foreground "#724a09")))
+      "Face for flycheck warning feedback in the modeline."
+      :group 'fc/flycheck)
+    ;;; errors are reported like this:
+    ;;; E241:ERROR   <file name>:<line> <message>
+    (defface fc/flycheck-info
+      '((t (:foreground "#19baff")))
+      "Face for flycheck info feedback in the modeline."
+      :group 'fc/flycheck)
+    (defface fc/flycheck-success
+      '((t (:foreground "#2cb250")))
+      "Face for flycheck success feedback in the modeline."
+      :group 'fc/flycheck)
+
+    (setq flycheck-mode-line
+        '(:eval
+          (pcase flycheck-last-status-change
+            (`running (propertize " ⟲ Running" 'face 'fc/flycheck-info))
+            (`errored (propertize " ⚠ Error" 'face 'fc/flycheck-error))
+            (`no-checker (propertize " ⚠ No Checker" 'face 'fc/flycheck-info))
+            (`suspicious (propertize " ⚠ Suspicious" 'face 'fc/flycheck-warning))
+            (`not-checked (propertize " ✖ Disabled" 'face 'fc/flycheck-info))
+            (`interrupted (propertize " ⚠ Interrupted" 'face 'fc/flycheck-warning))
+            (`finished
+             (let* ((error-counts (flycheck-count-errors flycheck-current-errors))
+                    (no-errors (cdr (assq 'error error-counts)))
+                    (no-warnings (cdr (assq 'warning error-counts)))
+                    (face (cond (no-errors 'fc/flycheck-error)
+                                (no-warnings 'fc/flycheck-warning)
+                                (t 'fc/flycheck-success))))
+               (propertize (if (or no-errors no-warnings) (format " ✘ %s/%s Issues" (or no-errors 0) (or no-warnings 0)) " ✔ No Issues") 'face face))))))))
+
+(provide 'fcuny-flycheck)