Adding a begin iterator to the ValueStack.

.bazelversion

@@ -1 +1 @@
-5.1.1
+6.2.1

WORKSPACE

@@ -3,9 +3,9 @@ load("@bazel_tools//tools/build_defs/repo:http.bzl", "http_archive")
 
 http_archive(
   name = "com_google_googletest",
-  urls = ["https://github.com/google/googletest/archive/d166e09483845b9b6a658dccc3d3dbb293676b62.zip"],
-  strip_prefix = "googletest-d166e09483845b9b6a658dccc3d3dbb293676b62",
-  sha256 = "d27641a853c49d3e8d7b9bbced1ceb861336134cd148bf6db720a40ccde66516",
+  urls = ["https://github.com/google/googletest/archive/8a6feabf04bec8fb125e0df0ad1195c42350725f.zip"],
+  strip_prefix = "googletest-8a6feabf04bec8fb125e0df0ad1195c42350725f",
+  sha256 = "c83f69fa8cb7a503d3ae9f736cf679b0846772b1ae955c63133520b749491a7c",
 )
 
 http_archive(

jasmin/value_stack.h

@@ -50,6 +50,7 @@ struct ValueStack {
   using const_iterator  = Value const *;
 
   // Returns an iterator referrencing one passed the end. of the `ValueStack`.
+  const_iterator begin() const { return values_.get(); }
   const_iterator end() const { return head_; }
 
   // Pop the top `Value` off the stack and return it. Behavior is undefined if

jasmin/value_stack_test.cc

@@ -173,6 +173,16 @@ TEST(ValueStack, Erase) {
 #endif  // defined(JASMIN_DEBUG)
 }
 
+TEST(ValueStack, Begin) {
+  ValueStack value_stack{1, true, 3.14};
+  EXPECT_EQ((value_stack.begin() + 2)->as<double>(), 3.14);
+  EXPECT_EQ((value_stack.begin() + 1)->as<bool>(), true);
+  EXPECT_EQ((value_stack.begin())->as<int>(), 1);
+  value_stack.pop_value();
+  EXPECT_EQ((value_stack.begin() + 2)->as<bool>(), true);
+  EXPECT_EQ((value_stack.begin() + 1)->as<int>(), 1);
+}
+
 TEST(ValueStack, End) {
   ValueStack value_stack{1, true, 3.14};
   EXPECT_EQ((value_stack.end() - 1)->as<double>(), 3.14);