[es6] implement spread calls

test/cctest/test-parsing.cc

Index: test/cctest/test-parsing.cc
diff --git a/test/cctest/test-parsing.cc b/test/cctest/test-parsing.cc
index 7a624cb0bf38f99a55ade2350f72af62986ed960..935e273ca10220dd118f5d784894badb315b06b2 100644
--- a/test/cctest/test-parsing.cc
+++ b/test/cctest/test-parsing.cc
@@ -1388,7 +1388,8 @@ enum ParserFlag {
   kAllowHarmonySloppy,
   kAllowHarmonyUnicode,
   kAllowHarmonyComputedPropertyNames,
-  kAllowStrongMode
+  kAllowStrongMode,
+  kAllowHarmonySpreadCalls
 };
 
 
@@ -4982,6 +4983,60 @@ TEST(RestParametersDuplicateEvalArguments) {
 }
 
 
+TEST(SpreadCall) {
+  const char* context_data[][2] = {{"function fn() { 'use strict';} fn(", ");"},
+                                   {"function fn() {} fn(", ");"},
+                                   {NULL, NULL}};
+
+  const char* data[] = {
+      "...([1, 2, 3])",
+      "...'123', ...'456'",
+      "...new Set([1, 2, 3]), 4",
+      "1, ...[2, 3], 4",
+      "...Array(...[1,2,3,4])",
+      "...NaN",
+      NULL};
+
+  static const ParserFlag always_flags[] = {kAllowHarmonySpreadCalls};
+
+  RunParserSyncTest(context_data, data, kSuccess, NULL, 0, always_flags,
+                    arraysize(always_flags));
+}
+
+
+TEST(SpreadCallErrors) {
+  const char* context_data[][2] = {{"function fn() { 'use strict';} fn(", ");"},
+                                   {"function fn() {} fn(", ");"},
+                                   {NULL, NULL}};
+
+  const char* data[] = {
+      "(...[1, 2, 3])",
+      "......[1,2,3]",
+      NULL};
+
+  static const ParserFlag always_flags[] = {kAllowHarmonySpreadCalls};
+
+  RunParserSyncTest(context_data, data, kError, NULL, 0, always_flags,
+                    arraysize(always_flags));
+}
+
+
+TEST(BadRestSpread) {
+  const char* context_data[][2] = {{"function fn() { 'use strict';", "} fn();"},
+                                   {"function fn() { ", "} fn();" },
+                                   {NULL, NULL}};
+  const char* data[] = {
+    "return ...[1,2,3];",
+    "var ...x = [1,2,3];",
+    "var [...x,] = [1,2,3];",
+    "var [...x, y] = [1,2,3];",
+    "var {...x} = [1,2,3];",
+    "var { x } = {x: ...[1,2,3]}",
+    NULL};
+  RunParserSyncTest(context_data, data, kError, NULL, 0, NULL, 0);
+}
+
+
 TEST(LexicalScopingSloppyMode) {
   const char* context_data[][2] = {
       {"", ""},