Implement newline corrector for list block.

1 files changed, 36 insertions, 0 deletions

diff --git a/src/clarktown/correctors/list_block.clj b/src/clarktown/correctors/list_block.clj
new file mode 100644
index 0000000..cf84bb1
--- /dev/null
+++ b/src/clarktown/correctors/list_block.clj
@@ -0,0 +1,36 @@
+(ns clarktown.correctors.list-block
+  (:require
+    [clojure.string :as string]
+    [clarktown.matchers.list-block :as matcher]))
+
+
+(defn empty-line-above?
+  "Determines whether there's a need for an empty new line
+  above the `line` at the current `index`. In the list block 
+  case that's when the above line is not a newline and is not
+  a list block line."
+  [lines line index]
+  (and (matcher/match? line)
+       (> index 0)
+       (nil? (-> (nth lines (- index 1))
+                 string/trim
+                 matcher/match?))
+       (not (= (-> (nth lines (- index 1))
+                   string/trim)     
+               "")))) 
+ 
+               
+(defn empty-line-below?
+  "Determines whether there's a need for an empty new line
+  above the `line` at the current `index`. In the list block 
+  case that's when the below line is not a newline and is not
+  a list block line."
+  [lines line index]
+  (and (matcher/match? line)
+       (> (- (count lines) 1) index)
+       (nil? (-> (nth lines (+ index 1))
+                 string/trim
+                 matcher/match?))
+       (not (= (-> (nth lines (+ index 1))
+                   string/trim)
+               ""))))