1 files changed, 83 insertions, 0 deletions

diff --git a/imports/codemirror/lib/util/javascript-hint.js b/imports/codemirror/lib/util/javascript-hint.js
new file mode 100755
index 00000000..4e88a7e4
--- /dev/null
+++ b/imports/codemirror/lib/util/javascript-hint.js
@@ -0,0 +1,83 @@
+(function () {
+  function forEach(arr, f) {
+    for (var i = 0, e = arr.length; i < e; ++i) f(arr[i]);
+  }
+  
+  function arrayContains(arr, item) {
+    if (!Array.prototype.indexOf) {
+      var i = arr.length;
+      while (i--) {
+        if (arr[i] === item) {
+          return true;
+        }
+      }
+      return false;
+    }
+    return arr.indexOf(item) != -1;
+  }
+  
+  CodeMirror.javascriptHint = function(editor) {
+    // Find the token at the cursor
+    var cur = editor.getCursor(), token = editor.getTokenAt(cur), tprop = token;
+    // If it's not a 'word-style' token, ignore the token.
+    if (!/^[\w$_]*$/.test(token.string)) {
+      token = tprop = {start: cur.ch, end: cur.ch, string: "", state: token.state,
+                       className: token.string == "." ? "property" : null};
+    }
+    // If it is a property, find out what it is a property of.
+    while (tprop.className == "property") {
+      tprop = editor.getTokenAt({line: cur.line, ch: tprop.start});
+      if (tprop.string != ".") return;
+      tprop = editor.getTokenAt({line: cur.line, ch: tprop.start});
+      if (!context) var context = [];
+      context.push(tprop);
+    }
+    return {list: getCompletions(token, context),
+            from: {line: cur.line, ch: token.start},
+            to: {line: cur.line, ch: token.end}};
+  }
+
+  var stringProps = ("charAt charCodeAt indexOf lastIndexOf substring substr slice trim trimLeft trimRight " +
+                     "toUpperCase toLowerCase split concat match replace search").split(" ");
+  var arrayProps = ("length concat join splice push pop shift unshift slice reverse sort indexOf " +
+                    "lastIndexOf every some filter forEach map reduce reduceRight ").split(" ");
+  var funcProps = "prototype apply call bind".split(" ");
+  var keywords = ("break case catch continue debugger default delete do else false finally for function " +
+                  "if in instanceof new null return switch throw true try typeof var void while with").split(" ");
+
+  function getCompletions(token, context) {
+    var found = [], start = token.string;
+    function maybeAdd(str) {
+      if (str.indexOf(start) == 0 && !arrayContains(found, str)) found.push(str);
+    }
+    function gatherCompletions(obj) {
+      if (typeof obj == "string") forEach(stringProps, maybeAdd);
+      else if (obj instanceof Array) forEach(arrayProps, maybeAdd);
+      else if (obj instanceof Function) forEach(funcProps, maybeAdd);
+      for (var name in obj) maybeAdd(name);
+    }
+
+    if (context) {
+      // If this is a property, see if it belongs to some object we can
+      // find in the current environment.
+      var obj = context.pop(), base;
+      if (obj.className == "variable")
+        base = window[obj.string];
+      else if (obj.className == "string")
+        base = "";
+      else if (obj.className == "atom")
+        base = 1;
+      while (base != null && context.length)
+        base = base[context.pop().string];
+      if (base != null) gatherCompletions(base);
+    }
+    else {
+      // If not, just look in the window object and any local scope
+      // (reading into JS mode internals to get at the local variables)
+      for (var v = token.state.localVars; v; v = v.next) maybeAdd(v.name);
+      gatherCompletions(window);
+      forEach(keywords, maybeAdd);
+    }
+    return found;
+  }
+})();