Implement partial blocks

This allows for failover for missing partials as well as limited templating ability through the `{{> @partial-block }}` partial special case.

Partial fix for #1018

1 files changed, 19 insertions, 0 deletions

diff --git a/lib/handlebars/compiler/helpers.js b/lib/handlebars/compiler/helpers.js
index bf72034..e04f4dd 100644
--- a/lib/handlebars/compiler/helpers.js
+++ b/lib/handlebars/compiler/helpers.js
@@ -185,3 +185,22 @@ export function prepareProgram(statements, loc) {
 }
 
 
+export function preparePartialBlock(openPartialBlock, program, close, locInfo) {
+  if (openPartialBlock.name.original !== close.path.original) {
+    let errorNode = {loc: openPartialBlock.name.loc};
+
+    throw new Exception(openPartialBlock.name.original + " doesn't match " + close.path.original, errorNode);
+  }
+
+  return {
+    type: 'PartialBlockStatement',
+    path: openPartialBlock.name,
+    params: openPartialBlock.params,
+    hash: openPartialBlock.hash,
+    program,
+    openStrip: openPartialBlock.strip,
+    closeStrip: close && close.strip,
+    loc: this.locInfo(locInfo)
+  };
+}
+