Merge pull request #1448 from jchadwick-buf:prefer-ptrdiff-over-ssize

PiperOrigin-RevId: 754173505

Author: copybara-github

extensions/lists_functions.cc

@@ -209,7 +209,7 @@ absl::StatusOr<ListValue> ListRange(
     google::protobuf::Arena* ABSL_NONNULL arena) {
   auto builder = NewListValueBuilder(arena);
   builder->Reserve(end);
-  for (ssize_t i = 0; i < end; ++i) {
+  for (int64_t i = 0; i < end; ++i) {
     CEL_RETURN_IF_ERROR(builder->Add(IntValue(i)));
   }
   return std::move(*builder).Build();
@@ -222,7 +222,7 @@ absl::StatusOr<ListValue> ListReverse(
     google::protobuf::Arena* ABSL_NONNULL arena) {
   auto builder = NewListValueBuilder(arena);
   CEL_ASSIGN_OR_RETURN(size_t size, list.Size());
-  for (ssize_t i = size - 1; i >= 0; --i) {
+  for (ptrdiff_t i = size - 1; i >= 0; --i) {
     CEL_ASSIGN_OR_RETURN(Value value,
                          list.Get(i, descriptor_pool, message_factory, arena));
     CEL_RETURN_IF_ERROR(builder->Add(value));

parser/parser.cc

@@ -459,26 +459,26 @@ class CodePointStream final : public CharStream {
     index_++;
   }
 
-  size_t LA(ssize_t i) override {
+  size_t LA(ptrdiff_t i) override {
     if (ABSL_PREDICT_FALSE(i == 0)) {
       return 0;
     }
-    auto p = static_cast<ssize_t>(index_);
+    auto p = static_cast<ptrdiff_t>(index_);
     if (i < 0) {
       i++;
       if (p + i - 1 < 0) {
         return IntStream::EOF;
       }
     }
-    if (p + i - 1 >= static_cast<ssize_t>(size_)) {
+    if (p + i - 1 >= static_cast<ptrdiff_t>(size_)) {
       return IntStream::EOF;
     }
     return buffer_.at(static_cast<size_t>(p + i - 1));
   }
 
-  ssize_t mark() override { return -1; }
+  ptrdiff_t mark() override { return -1; }
 
-  void release(ssize_t marker) override {}
+  void release(ptrdiff_t marker) override {}
 
   size_t index() override { return index_; }