115       lookup: function lookup(depths, name) {
116         var len = depths.length;
118           var result = depths[i] && container.lookupProperty(depths[i], name);
120             return depths[i][name];
138       program: function program(i, data, declaredBlockParams, blockParams, depths) {
141         if (data || depths || blockParams || declaredBlockParams) {
142           programWrapper = wrapProgram(this, i, fn, data, declaredBlockParams, blockParams, depths);
180       var depths = undefined,
183         if (options.depths) {
184           depths = context != options.depths[0] ? [context].concat(options.depths) : options.depths;
186           depths = [context];
191 …ateSpec.main(container, context, container.helpers, container.partials, data, blockParams, depths);
194 …main = executeDecorators(templateSpec.main, main, container, options.depths || [], data, blockPara…
229     ret._child = function (i, data, blockParams, depths) {  argument
233       if (templateSpec.useDepths && !depths) {
237       return wrapProgram(container, i, templateSpec[i], data, 0, blockParams, depths);
242   function wrapProgram(container, i, fn, data, declaredBlockParams, blockParams, depths) {  argument
246       var currentDepths = depths;
247 …if (depths && context != depths[0] && !(context === container.nullContext && depths[0] === null)) {
248         currentDepths = [context].concat(depths);
254     prog = executeDecorators(fn, prog, container, depths, data, blockParams);
257     prog.depth = depths ? depths.length : 0;
333   function executeDecorators(fn, prog, container, depths, data, blockParams) {  argument
336       prog = fn.decorator(prog, props, container, depths && depths[0], data, blockParams, depths);