Add ion highlight mode

demo/kitchen-sink/docs/ion.ion

@@ -0,0 +1,68 @@
+// Comment
+/*
+Multi
+Line
+Comment
+*/
+[1,2,3,45 /*TODO: should be 42, obviously*/, 2016-04-21T08:10:46Z, 2016-04-21T08:10:46-08:00, 2016-04-21, 2016, 0x5, 0b0110]
+(5 7 1 3 [
+    'a', 'b',
+    null, null.int, null.bool, null.list
+    true, false,
+    nan, -inf, +inf,
+    "str",
+    "str with embedded \" ",
+    '''str with embedded \''' ''',
+    {{"clob content"}},
+    {{ AB/ }}
+    ])
+
+'''
+
+multi
+line
+string
+
+'''
+
+states::{
+    // https://amzn.github.io/ion-docs/docs/spec.html
+    root: rules::[
+        include::'value'
+    ],
+
+    // https://amzn.github.io/ion-docs/docs/spec.html#string
+    string: rules::[
+        match::{
+            regex: "(\\\")((?:\\\\\"|[^\"])*)(\\\")",
+            token: ['string.dblq.punc.start', 'string.dblq', 'string.dblq.punc.end']
+        },
+        push::{
+            regex: "\'{3}",
+            token: 'string.trpq.punc.start',
+            states: rules::[
+                pop::{
+                    regex: "\'{3}",
+                    token: 'string.trpq.punc.end',
+                },
+                match::{
+                    regex: "(?:\\\\'*|.|[^']*)",
+                    token: 'string.trpq'
+                }
+            ]
+        },
+    ],
+
+    /*
+    ...
+    */
+}
+{
+ "json": {
+      "compatibility": true,
+      "open sourced": "2016-04-21T08:10:46Z",
+      "foo": 9,
+      "bar": 1.1,
+      "baz": [{"id": 1}, {"id":2}]
+  }
+}

lib/ace/ext/modelist.js

@@ -106,6 +106,7 @@ var supportedModes = {
     HTML_Ruby:   ["erb|rhtml|html.erb"],
     INI:         ["ini|conf|cfg|prefs"],
     Io:          ["io"],
+    Ion:         ["ion"],
     Jack:        ["jack"],
     Jade:        ["jade|pug"],
     Java:        ["java"],