[clike mode] Add triple-quoted string support for Scala

Author: marijnh

mode/clike/clike.js

@@ -298,6 +298,7 @@ CodeMirror.defineMode("clike", function(config, parserConfig) {
     },
     modeProps: {fold: ["brace", "include"]}
   });
+
   def("text/x-java", {
     name: "clike",
     keywords: words("abstract assert boolean break byte case catch char class const continue default " +
@@ -315,6 +316,7 @@ CodeMirror.defineMode("clike", function(config, parserConfig) {
     },
     modeProps: {fold: ["brace", "import"]}
   });
+
   def("text/x-csharp", {
     name: "clike",
     keywords: words("abstract as base break case catch checked class const continue" +
@@ -341,6 +343,19 @@ CodeMirror.defineMode("clike", function(config, parserConfig) {
       }
     }
   });
+
+  function tokenTripleString(stream, state) {
+    var escaped = false;
+    while (!stream.eol()) {
+      if (!escaped && stream.match('"""')) {
+        state.tokenize = null;
+        break;
+      }
+      escaped = stream.next() != "\\" && !escaped;
+    }
+    return "string";
+  }
+
   def("text/x-scala", {
     name: "clike",
     keywords: words(
@@ -366,8 +381,6 @@ CodeMirror.defineMode("clike", function(config, parserConfig) {
       "Compiler Double Exception Float Integer Long Math Number Object Package Pair Process " +
       "Runtime Runnable SecurityManager Short StackTraceElement StrictMath String " +
       "StringBuffer System Thread ThreadGroup ThreadLocal Throwable Triple Void"
-
-
     ),
     multiLineStrings: true,
     blockKeywords: words("catch class do else finally for forSome if match switch try while"),
@@ -376,9 +389,15 @@ CodeMirror.defineMode("clike", function(config, parserConfig) {
       "@": function(stream) {
         stream.eatWhile(/[\w\$_]/);
         return "meta";
+      },
+      '"': function(stream, state) {
+        if (!stream.match('""')) return false;
+        state.tokenize = tokenTripleString;
+        return state.tokenize(stream, state);
       }
     }
   });
+
   def(["x-shader/x-vertex", "x-shader/x-fragment"], {
     name: "clike",
     keywords: words("float int bool void " +

mode/clike/index.html

@@ -169,6 +169,21 @@ <h2>Java example</h2>
     member = value;
   }
 }
+</textarea></div>
+
+<h2>Scala example</h2>
+
+<div><textarea id="scala-code">
+object FilterTest extends App {
+  def filter(xs: List[Int], threshold: Int) = {
+    def process(ys: List[Int]): List[Int] =
+      if (ys.isEmpty) ys
+      else if (ys.head < threshold) ys.head :: process(ys.tail)
+      else process(ys.tail)
+    process(xs)
+  }
+  println(filter(List(1, 9, 2, 8, 3, 7, 4), 5))
+}
 </textarea></div>
 
     <script>
@@ -187,6 +202,11 @@ <h2>Java example</h2>
         matchBrackets: true,
         mode: "text/x-java"
       });
+      var scalaEditor = CodeMirror.fromTextArea(document.getElementById("scala-code"), {
+        lineNumbers: true,
+        matchBrackets: true,
+        mode: "text/x-scala"
+      });
       var mac = CodeMirror.keyMap.default == CodeMirror.keyMap.macDefault;
       CodeMirror.keyMap.default[(mac ? "Cmd" : "Ctrl") + "-Space"] = "autocomplete";
     </script>
@@ -198,7 +218,8 @@ <h2>Java example</h2>
     directives are recognized.</p>
 
     <p><strong>MIME types defined:</strong> <code>text/x-csrc</code>
-    (C code), <code>text/x-c++src</code> (C++
-    code), <code>text/x-java</code> (Java
-    code), <code>text/x-csharp</code> (C#).</p>
+    (C), <code>text/x-c++src</code> (C++), <code>text/x-java</code>
+    (Java), <code>text/x-csharp</code> (C#),
+    <code>text/x-scala</code> (Scala), <code>text/x-vertex</code>
+    and <code>x-shader/x-fragment</code> (shader programs).</p>
 </article>