Add contexts for string mode hash values

Allows for evaluating hash parameters such as ../city in string mode.

Author: leshill

Diff for: dist/handlebars.js

@@ -1023,6 +1023,10 @@ Compiler.prototype = {
       val  = pair[1];
 
       if (this.options.stringParams) {
+        if(val.depth) {
+          this.addDepth(val.depth);
+        }
+        this.opcode('getContext', val.depth || 0);
         this.opcode('pushStringParam', val.stringModeValue, val.type);
       } else {
         this.accept(val);
@@ -1607,16 +1611,18 @@ JavaScriptCompiler.prototype = {
 
     if (this.options.stringParams) {
       this.register('hashTypes', '{}');
+      this.register('hashContexts', '{}');
     }
   },
   pushHash: function() {
-    this.hash = {values: [], types: []};
+    this.hash = {values: [], types: [], contexts: []};
   },
   popHash: function() {
     var hash = this.hash;
     this.hash = undefined;
 
     if (this.options.stringParams) {
+      this.register('hashContexts', '{' + hash.contexts.join(',') + '}');
       this.register('hashTypes', '{' + hash.types.join(',') + '}');
     }
     this.push('{\n    ' + hash.values.join(',\n    ') + '\n  }');
@@ -1759,14 +1765,18 @@ JavaScriptCompiler.prototype = {
   // and pushes the hash back onto the stack.
   assignToHash: function(key) {
     var value = this.popStack(),
+        context,
         type;
 
     if (this.options.stringParams) {
       type = this.popStack();
-      this.popStack();
+      context = this.popStack();
     }
 
     var hash = this.hash;
+    if (context) {
+      hash.contexts.push("'" + key + "': " + context);
+    }
     if (type) {
       hash.types.push("'" + key + "': " + type);
     }
@@ -2020,6 +2030,7 @@ JavaScriptCompiler.prototype = {
     if (this.options.stringParams) {
       options.push("contexts:[" + contexts.join(",") + "]");
       options.push("types:[" + types.join(",") + "]");
+      options.push("hashContexts:hashContexts");
       options.push("hashTypes:hashTypes");
     }
 

Diff for: lib/handlebars/compiler/compiler.js

@@ -189,6 +189,10 @@ Compiler.prototype = {
       val  = pair[1];
 
       if (this.options.stringParams) {
+        if(val.depth) {
+          this.addDepth(val.depth);
+        }
+        this.opcode('getContext', val.depth || 0);
         this.opcode('pushStringParam', val.stringModeValue, val.type);
       } else {
         this.accept(val);
@@ -773,16 +777,18 @@ JavaScriptCompiler.prototype = {
 
     if (this.options.stringParams) {
       this.register('hashTypes', '{}');
+      this.register('hashContexts', '{}');
     }
   },
   pushHash: function() {
-    this.hash = {values: [], types: []};
+    this.hash = {values: [], types: [], contexts: []};
   },
   popHash: function() {
     var hash = this.hash;
     this.hash = undefined;
 
     if (this.options.stringParams) {
+      this.register('hashContexts', '{' + hash.contexts.join(',') + '}');
       this.register('hashTypes', '{' + hash.types.join(',') + '}');
     }
     this.push('{\n    ' + hash.values.join(',\n    ') + '\n  }');
@@ -925,14 +931,18 @@ JavaScriptCompiler.prototype = {
   // and pushes the hash back onto the stack.
   assignToHash: function(key) {
     var value = this.popStack(),
+        context,
         type;
 
     if (this.options.stringParams) {
       type = this.popStack();
-      this.popStack();
+      context = this.popStack();
     }
 
     var hash = this.hash;
+    if (context) {
+      hash.contexts.push("'" + key + "': " + context);
+    }
     if (type) {
       hash.types.push("'" + key + "': " + type);
     }
@@ -1186,6 +1196,7 @@ JavaScriptCompiler.prototype = {
     if (this.options.stringParams) {
       options.push("contexts:[" + contexts.join(",") + "]");
       options.push("types:[" + types.join(",") + "]");
+      options.push("hashContexts:hashContexts");
       options.push("hashTypes:hashTypes");
     }
 

Diff for: spec/qunit_spec.js

@@ -1286,6 +1286,32 @@ test("in string mode, hash parameters get type information", function() {
   equal(result, "Helper called");
 });
 
+test("in string mode, hash parameters get context information", function() {
+  var template = CompilerContext.compile('{{#with dale}}{{tomdale he.says desire="need" noun=../dad/joke bool=true}}{{/with}}', { stringParams: true });
+
+  var context = {dale: {}};
+
+  var helpers = {
+    tomdale: function(exclamation, options) {
+      equal(exclamation, "he.says");
+      equal(options.types[0], "ID");
+
+      equal(options.contexts.length, 1);
+      equal(options.hashContexts.noun, context);
+      equal(options.hash.desire, "need");
+      equal(options.hash.noun, "dad.joke");
+      equal(options.hash.bool, true);
+      return "Helper called";
+    },
+    "with": function(context, options) {
+      return options.fn(options.contexts[0][context]);
+    }
+  };
+
+  var result = template(context, { helpers: helpers });
+  equal(result, "Helper called");
+});
+
 test("when inside a block in String mode, .. passes the appropriate context in the options hash to a block helper", function() {
   var template = CompilerContext.compile('{{#with dale}}{{#tomdale ../need dad.joke}}wot{{/tomdale}}{{/with}}', {stringParams: true});