Create python-hint.js

lib/util/python-hint.js

+(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;
+  }
+
+  function scriptHint(editor, _keywords, getToken) {
+    // Find the token at the cursor
+    var cur = editor.getCursor(), token = getToken(editor, 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 == ":" ? "python-type" : null};
+    }
+      
+    if (!context) var context = [];
+    context.push(tprop);
+    
+    var completionList = getCompletions(token, context); 
+    completionList = completionList.sort();
+    //prevent autocomplete for last word, instead show dropdown with one word
+    if(completionList.length == 1) {
+      completionList.push(" ");
+    }
+
+    return {list: completionList,
+              from: {line: cur.line, ch: token.start},
+              to: {line: cur.line, ch: token.end}};
+  }
+  
+  CodeMirror.pythonHint = function(editor) {
+    return scriptHint(editor, pythonKeywordsU, function (e, cur) {return e.getTokenAt(cur);});
+  };
+ 
+  var pythonKeywords = "and del from not while as elif global or with assert else if pass yield"
++ "break except import print class exec in raise continue finally is return def for lambda try";
+  var pythonKeywordsL = pythonKeywords.split(" ");
+  var pythonKeywordsU = pythonKeywords.toUpperCase().split(" ");
+  
+  var pythonBuiltins = "abs divmod input open staticmethod all enumerate int ord str "
++ "any eval isinstance pow sum basestring execfile issubclass print super" 
++ "bin file iter property tuple bool filter len range type" 
++ "bytearray float list raw_input unichr callable format locals reduce unicode" 
++ "chr frozenset long reload vars classmethod getattr map repr xrange"
++ "cmp globals max reversed zip compile hasattr memoryview round __import__" 
++ "complex hash min set apply delattr help next setattr buffer" 
++ "dict hex object slice coerce dir id oct sorted intern ";  
+  var pythonBuiltinsL = pythonBuiltins.split(" ").join("() ").split(" ");  
+  var pythonBuiltinsU = pythonBuiltins.toUpperCase().split(" ").join("() ").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) {
+        forEach(pythonBuiltinsL, maybeAdd);
+        forEach(pythonBuiltinsU, maybeAdd);
+        forEach(pythonKeywordsL, maybeAdd);
+        forEach(pythonKeywordsU, maybeAdd);
+    }
+
+    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.type == "variable") 
+          base = obj.string;
+      else if(obj.type == "variable-3")
+          base = ":" + obj.string;
+        
+      while (base != null && context.length)
+        base = base[context.pop().string];
+      if (base != null) gatherCompletions(base);
+    }
+    return found;
+  }
+})();