Merge pull request #99 from smfoote/debugging-helpers

Add debug helpers
smfoote · Jul 20, 2015 · 9e78876 · 9e78876
2 parents 841069a + 8d860bf
commit 9e78876
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Showing 4 changed files with 58 additions and 4 deletions.
diff --git a/dist/helpers.js b/dist/helpers.js
diff --git a/dist/runtime.js b/dist/runtime.js
diff --git a/src/helpers.js b/src/helpers.js
@@ -1,3 +1,5 @@
+/*eslint no-debugger:0 */
+
 let emptyFrag = function() {
   return document.createDocumentFragment();
 };
@@ -50,6 +52,21 @@ let helpers = {
     return truthTest(params, bodies, context, (left, right) => {
       return left <= right;
     });
+  },
+  contextDump(context, params) {
+    let formattedContext = JSON.stringify(context, null, 2);
+    if (params.to === 'console') {
+      console.log(formattedContext);
+    } else {
+      let frag = document.createDocumentFragment();
+      let pre = document.createElement('pre');
+      pre.appendChild(document.createTextNode(formattedContext));
+      frag.appendChild(pre);
+      return frag;
+    }
+  },
+  debugger() {
+    debugger;
   }
 };
 

diff --git a/src/runtime.js b/src/runtime.js
@@ -260,7 +260,7 @@ let tornado = {
     }
     if (Array.isArray(val)) {
       if (placeholderNode) {
-        let frag = document.createDocumentFragment();
+        let frag = this.createDocumentFragment();
         for (let i = 0, item; (item = val[i]); i++) {
           frag.appendChild(body(item));
         }
@@ -308,6 +308,7 @@ let tornado = {
   },
 
   helperResult(placeholderNode, returnVal) {
+    returnVal = this.util.isNode(returnVal) ? returnVal : this.createDocumentFragment();
     if (this.util.isPromise(returnVal)) {
       returnVal.then(frag => {
         if (placeholderNode) {
@@ -335,7 +336,7 @@ let tornado = {
   block(name, idx, context, template) {
     let renderer = this.getBlockRenderer(name, idx, template);
     if (!renderer) {
-      let frag = document.createDocumentFragment();
+      let frag = this.createDocumentFragment();
       frag.appendChild(document.createTextNode(''));
       return frag;
     }
@@ -541,6 +542,15 @@ let tornado = {
       return !!val;
     },
 
+    /**
+     * Determine if a value is a HTML Node
+     * @param {*} val The value in question
+     * @return {Boolean}
+     */
+    isNode(val) {
+      return val instanceof Node;
+    },
+
     /**
      * Return the values of the object (sorted by key name) as an array
      * @param {Object} obj The object from which the values are to be extracted