compileNodes - acelan86/angular GitHub Wiki

    function compileNodes(nodeList, transcludeFn, $rootElement, maxPriority) {
      var linkFns = [],
          nodeLinkFn, childLinkFn, directives, attrs, linkFnFound;

      for(var i = 0; i < nodeList.length; i++) {
        attrs = new Attributes();

        // we must always refer to nodeList[i] since the nodes can be replaced underneath us.
        directives = collectDirectives(nodeList[i], [], attrs, maxPriority);

        nodeLinkFn = (directives.length)
            ? applyDirectivesToNode(directives, nodeList[i], attrs, transcludeFn, $rootElement)
            : null;

        childLinkFn = (nodeLinkFn && nodeLinkFn.terminal || !nodeList[i].childNodes || !nodeList[i].childNodes.length)
            ? null
            : compileNodes(nodeList[i].childNodes,
                 nodeLinkFn ? nodeLinkFn.transclude : transcludeFn);

        linkFns.push(nodeLinkFn);
        linkFns.push(childLinkFn);
        linkFnFound = (linkFnFound || nodeLinkFn || childLinkFn);
      }

      // return a linking function if we have found anything, null otherwise
      return linkFnFound ? compositeLinkFn : null;

      function compositeLinkFn(scope, nodeList, $rootElement, boundTranscludeFn) {
        var nodeLinkFn, childLinkFn, node, childScope, childTranscludeFn, i, ii, n;

        // copy nodeList so that linking doesn't break due to live list updates.
        var stableNodeList = [];
        for (i = 0, ii = nodeList.length; i < ii; i++) {
          stableNodeList.push(nodeList[i]);
        }

        for(i = 0, n = 0, ii = linkFns.length; i < ii; n++) {
          node = stableNodeList[n];
          nodeLinkFn = linkFns[i++];
          childLinkFn = linkFns[i++];

          if (nodeLinkFn) {
            if (nodeLinkFn.scope) {
              childScope = scope.$new(isObject(nodeLinkFn.scope));
              jqLite(node).data('$scope', childScope);
            } else {
              childScope = scope;
            }
            childTranscludeFn = nodeLinkFn.transclude;
            if (childTranscludeFn || (!boundTranscludeFn && transcludeFn)) {
              nodeLinkFn(childLinkFn, childScope, node, $rootElement,
                  (function(transcludeFn) {
                    return function(cloneFn) {
                      var transcludeScope = scope.$new();
                      transcludeScope.$$transcluded = true;

                      return transcludeFn(transcludeScope, cloneFn).
                          bind('$destroy', bind(transcludeScope, transcludeScope.$destroy));
                    };
                  })(childTranscludeFn || transcludeFn)
              );
            } else {
              nodeLinkFn(childLinkFn, childScope, node, undefined, boundTranscludeFn);
            }
          } else if (childLinkFn) {
            childLinkFn(scope, node.childNodes, undefined, boundTranscludeFn);
          }
        }
      }
    }
function collectDirectives(node, directives, attrs, maxPriority) {
      var nodeType = node.nodeType,
          attrsMap = attrs.$attr,
          match,
          className;

      switch(nodeType) {
        case 1: /* Element */
          // use the node name: <directive>
          addDirective(directives,
              directiveNormalize(nodeName_(node).toLowerCase()), 'E', maxPriority);

          // iterate over the attributes
          for (var attr, name, nName, value, nAttrs = node.attributes,
                   j = 0, jj = nAttrs && nAttrs.length; j < jj; j++) {
            attr = nAttrs[j];
            if (attr.specified) {
              name = attr.name;
              nName = directiveNormalize(name.toLowerCase());
              attrsMap[nName] = name;
              attrs[nName] = value = trim((msie && name == 'href')
                ? decodeURIComponent(node.getAttribute(name, 2))
                : attr.value);
              if (getBooleanAttrName(node, nName)) {
                attrs[nName] = true; // presence means true
              }
              addAttrInterpolateDirective(node, directives, value, nName);
              addDirective(directives, nName, 'A', maxPriority);
            }
          }

          // use class as directive
          className = node.className;
          if (isString(className) && className !== '') {
            while (match = CLASS_DIRECTIVE_REGEXP.exec(className)) {
              nName = directiveNormalize(match[2]);
              if (addDirective(directives, nName, 'C', maxPriority)) {
                attrs[nName] = trim(match[3]);
              }
              className = className.substr(match.index + match[0].length);
            }
          }
          break;
        case 3: /* Text Node */
          addTextInterpolateDirective(directives, node.nodeValue);
          break;
        case 8: /* Comment */
          try {
            match = COMMENT_DIRECTIVE_REGEXP.exec(node.nodeValue);
            if (match) {
              nName = directiveNormalize(match[1]);
              if (addDirective(directives, nName, 'M', maxPriority)) {
                attrs[nName] = trim(match[2]);
              }
            }
          } catch (e) {
            // turns out that under some circumstances IE9 throws errors when one attempts to read comment's node value.
            // Just ignore it and continue. (Can't seem to reproduce in test case.)
          }
          break;
      }

      directives.sort(byPriority);
      return directives;
    }
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