all tasks

Task/Strip-block-comments/Go/strip-block-comments.go

@@ -0,0 +1,54 @@
+package main
+
+import (
+    "fmt"
+    "strings"
+)
+
+// idiomatic to name a function newX that allocates an object, initializes it,
+// and returns it ready to use.  the object in this case is a closure.
+func newStripper(start, end string) func(string) string {
+    // default to c-style block comments
+    if start == "" || end == "" {
+        start, end = "/*", "*/"
+    }
+    // closes on variables start, end.
+    return func(source string) string {
+        for {
+            cs := strings.Index(source, start)
+            if cs < 0 {
+                break
+            }
+            ce := strings.Index(source[cs+2:], end)
+            if ce < 0 {
+                break
+            }
+            source = source[:cs] + source[cs+ce+4:]
+        }
+        return source
+    }
+}
+
+func main() {
+    // idiomatic is that zero values indicate to use meaningful defaults
+    stripC := newStripper("", "")
+
+    // strip function now defined and can be called any number of times
+    // without respecifying delimiters
+    fmt.Println(stripC(`  /**
+   * Some comments
+   * longer comments here that we can parse.
+   *
+   * Rahoo
+   */
+   function subroutine() {
+    a = /* inline comment */ b + c ;
+   }
+   /*/ <-- tricky comments */
+
+   /**
+    * Another comment.
+    */
+    function something() {
+    }`))
+}