Support for object property modification

jdudek · Mar 21, 2012 · e02bde4 · e02bde4
1 parent 984e16d
commit e02bde4
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Showing 2 changed files with 11 additions and 1 deletion.
diff --git a/src/c_backend.js b/src/c_backend.js
@@ -29,7 +29,16 @@ exports.compile = function (ast) {
       case AST.AssignStatement:
         if (node.leftExpr() instanceof AST.Variable) {
           return "js_assign_variable(binding, " +
-            quotes(node.leftExpr().identifier()) + ", " + expression(node.rightExpr()) + ");";
+            quotes(node.leftExpr().identifier()) + ", " +
+            expression(node.rightExpr()) +
+          ");";
+        } else if (node.leftExpr() instanceof AST.Refinement) {
+          return "{ "+
+            "JSValue* object = " + expression(node.leftExpr().expression()) + "; " +
+            "object->object_value = dict_insert(object->object_value, " +
+              "js_to_string(" + expression(node.leftExpr().key()) + ")->string_value, " +
+              expression(node.rightExpr()) + "); " +
+            "}";
         } else {
           throw "Invalid left-hand side in assignment";
         }

diff --git a/test/c_backend_test.js b/test/c_backend_test.js
@@ -55,6 +55,7 @@ tests.push(testProgram("return 2 > 3;", "false"));
 tests.push(testProgram("var x; return 2;", "2"));
 tests.push(testProgram("var x = 2; return x;", "2"));
 tests.push(testProgram("var x = 5; x = 2; return x;", "2"));
+tests.push(testProgram("var x = {}; x.y = 2; return x.y;", "2"));
 
 // Test: expression statement
 tests.push(testProgram("var x = 2; 5; return x;", "2"));