Have Decode{Cbor,Json} quirks default to empty
diff --git a/example/cbor-to-json/cbor-to-json.cc b/example/cbor-to-json/cbor-to-json.cc
index c4734d5..b0de784 100644
--- a/example/cbor-to-json/cbor-to-json.cc
+++ b/example/cbor-to-json/cbor-to-json.cc
@@ -143,8 +143,6 @@
std::vector<uint64_t> g_cbor_tags;
-std::vector<uint32_t> g_quirks;
-
struct {
int remaining_argc;
char** remaining_argv;
@@ -622,9 +620,7 @@
}
}
- return wuffs_aux::DecodeCbor(
- Callbacks(), wuffs_aux::sync_io::FileInput(in),
- wuffs_base__make_slice_u32(g_quirks.data(), g_quirks.size()))
+ return wuffs_aux::DecodeCbor(Callbacks(), wuffs_aux::sync_io::FileInput(in))
.error_message;
}
diff --git a/internal/cgen/auxiliary/cbor.hh b/internal/cgen/auxiliary/cbor.hh
index 75853a3..4ed18d6 100644
--- a/internal/cgen/auxiliary/cbor.hh
+++ b/internal/cgen/auxiliary/cbor.hh
@@ -75,8 +75,9 @@
// the number of bytes consumed. On failure, error_message is non-empty and
// cursor_position is the location of the error. That error may be a content
// error (invalid CBOR) or an input error (e.g. network failure).
-DecodeCborResult DecodeCbor(DecodeCborCallbacks&& callbacks,
- sync_io::Input&& input,
- wuffs_base__slice_u32 quirks);
+DecodeCborResult DecodeCbor(
+ DecodeCborCallbacks&& callbacks,
+ sync_io::Input&& input,
+ wuffs_base__slice_u32 quirks = wuffs_base__empty_slice_u32());
} // namespace wuffs_aux
diff --git a/internal/cgen/auxiliary/json.hh b/internal/cgen/auxiliary/json.hh
index a310f93..413c45d 100644
--- a/internal/cgen/auxiliary/json.hh
+++ b/internal/cgen/auxiliary/json.hh
@@ -84,8 +84,9 @@
// the number of bytes consumed. On failure, error_message is non-empty and
// cursor_position is the location of the error. That error may be a content
// error (invalid JSON) or an input error (e.g. network failure).
-DecodeJsonResult DecodeJson(DecodeJsonCallbacks&& callbacks,
- sync_io::Input&& input,
- wuffs_base__slice_u32 quirks);
+DecodeJsonResult DecodeJson(
+ DecodeJsonCallbacks&& callbacks,
+ sync_io::Input&& input,
+ wuffs_base__slice_u32 quirks = wuffs_base__empty_slice_u32());
} // namespace wuffs_aux
diff --git a/internal/cgen/base/fundamental-public.h b/internal/cgen/base/fundamental-public.h
index 0a4a86a..744f1cd 100644
--- a/internal/cgen/base/fundamental-public.h
+++ b/internal/cgen/base/fundamental-public.h
@@ -830,6 +830,30 @@
return ret;
}
+static inline wuffs_base__slice_u16 //
+wuffs_base__empty_slice_u16() {
+ wuffs_base__slice_u16 ret;
+ ret.ptr = NULL;
+ ret.len = 0;
+ return ret;
+}
+
+static inline wuffs_base__slice_u32 //
+wuffs_base__empty_slice_u32() {
+ wuffs_base__slice_u32 ret;
+ ret.ptr = NULL;
+ ret.len = 0;
+ return ret;
+}
+
+static inline wuffs_base__slice_u64 //
+wuffs_base__empty_slice_u64() {
+ wuffs_base__slice_u64 ret;
+ ret.ptr = NULL;
+ ret.len = 0;
+ return ret;
+}
+
static inline wuffs_base__table_u8 //
wuffs_base__empty_table_u8() {
wuffs_base__table_u8 ret;
@@ -840,6 +864,36 @@
return ret;
}
+static inline wuffs_base__table_u16 //
+wuffs_base__empty_table_u16() {
+ wuffs_base__table_u16 ret;
+ ret.ptr = NULL;
+ ret.width = 0;
+ ret.height = 0;
+ ret.stride = 0;
+ return ret;
+}
+
+static inline wuffs_base__table_u32 //
+wuffs_base__empty_table_u32() {
+ wuffs_base__table_u32 ret;
+ ret.ptr = NULL;
+ ret.width = 0;
+ ret.height = 0;
+ ret.stride = 0;
+ return ret;
+}
+
+static inline wuffs_base__table_u64 //
+wuffs_base__empty_table_u64() {
+ wuffs_base__table_u64 ret;
+ ret.ptr = NULL;
+ ret.width = 0;
+ ret.height = 0;
+ ret.stride = 0;
+ return ret;
+}
+
// wuffs_base__slice_u8__subslice_i returns s[i:].
//
// It returns an empty slice if i is out of bounds.
diff --git a/internal/cgen/data/data.go b/internal/cgen/data/data.go
index a96060c..29974bd 100644
--- a/internal/cgen/data/data.go
+++ b/internal/cgen/data/data.go
@@ -93,8 +93,9 @@
"" +
"// ---------------- Slices and Tables\n\n// WUFFS_BASE__SLICE is a 1-dimensional buffer.\n//\n// len measures a number of elements, not necessarily a size in bytes.\n//\n// A value with all fields NULL or zero is a valid, empty slice.\n#define WUFFS_BASE__SLICE(T) \\\n struct { \\\n T* ptr; \\\n size_t len; \\\n }\n\n// WUFFS_BASE__TABLE is a 2-dimensional buffer.\n//\n// width height, and stride measure a number of elements, not necessarily a\n// size in bytes.\n//\n// A value with all fields NULL or zero is a valid, empty table.\n#define WUFFS_BASE__TABLE(T) \\\n struct { \\\n T* ptr; \\\n size_t width; \\\n size_t height; \\\n size_t stride; \\\n }\n\ntypedef WUFFS_BASE__SLICE(uint8_t) wuffs_base__slice_u8;\ntypedef WUFFS_BASE__SLICE(uint16_t) wuffs_base__slice_u16;\ntypedef WUFFS_BASE__SLICE(uint32_t) wuffs_base__slice_u32;\ntypedef WUFFS_BASE__SLICE(uint64_t) wuffs_base__slice_u64;\n\ntypedef WUFFS_BASE__TABLE(u" +
"int8_t) wuffs_base__table_u8;\ntypedef WUFFS_BASE__TABLE(uint16_t) wuffs_base__table_u16;\ntypedef WUFFS_BASE__TABLE(uint32_t) wuffs_base__table_u32;\ntypedef WUFFS_BASE__TABLE(uint64_t) wuffs_base__table_u64;\n\nstatic inline wuffs_base__slice_u8 //\nwuffs_base__make_slice_u8(uint8_t* ptr, size_t len) {\n wuffs_base__slice_u8 ret;\n ret.ptr = ptr;\n ret.len = len;\n return ret;\n}\n\nstatic inline wuffs_base__slice_u16 //\nwuffs_base__make_slice_u16(uint16_t* ptr, size_t len) {\n wuffs_base__slice_u16 ret;\n ret.ptr = ptr;\n ret.len = len;\n return ret;\n}\n\nstatic inline wuffs_base__slice_u32 //\nwuffs_base__make_slice_u32(uint32_t* ptr, size_t len) {\n wuffs_base__slice_u32 ret;\n ret.ptr = ptr;\n ret.len = len;\n return ret;\n}\n\nstatic inline wuffs_base__slice_u64 //\nwuffs_base__make_slice_u64(uint64_t* ptr, size_t len) {\n wuffs_base__slice_u64 ret;\n ret.ptr = ptr;\n ret.len = len;\n return ret;\n}\n\nstatic inline wuffs_base__slice_u8 //\nwuffs_base__empty_slice_u8() {\n wuffs_base__slice_u8 ret;\n ret.ptr = NULL;\n" +
- " ret.len = 0;\n return ret;\n}\n\nstatic inline wuffs_base__table_u8 //\nwuffs_base__empty_table_u8() {\n wuffs_base__table_u8 ret;\n ret.ptr = NULL;\n ret.width = 0;\n ret.height = 0;\n ret.stride = 0;\n return ret;\n}\n\n// wuffs_base__slice_u8__subslice_i returns s[i:].\n//\n// It returns an empty slice if i is out of bounds.\nstatic inline wuffs_base__slice_u8 //\nwuffs_base__slice_u8__subslice_i(wuffs_base__slice_u8 s, uint64_t i) {\n if ((i <= SIZE_MAX) && (i <= s.len)) {\n return wuffs_base__make_slice_u8(s.ptr + i, s.len - i);\n }\n return wuffs_base__make_slice_u8(NULL, 0);\n}\n\n// wuffs_base__slice_u8__subslice_j returns s[:j].\n//\n// It returns an empty slice if j is out of bounds.\nstatic inline wuffs_base__slice_u8 //\nwuffs_base__slice_u8__subslice_j(wuffs_base__slice_u8 s, uint64_t j) {\n if ((j <= SIZE_MAX) && (j <= s.len)) {\n return wuffs_base__make_slice_u8(s.ptr, j);\n }\n return wuffs_base__make_slice_u8(NULL, 0);\n}\n\n// wuffs_base__slice_u8__subslice_ij returns s[i:j].\n//\n// It returns an empty s" +
- "lice if i or j is out of bounds.\nstatic inline wuffs_base__slice_u8 //\nwuffs_base__slice_u8__subslice_ij(wuffs_base__slice_u8 s,\n uint64_t i,\n uint64_t j) {\n if ((i <= j) && (j <= SIZE_MAX) && (j <= s.len)) {\n return wuffs_base__make_slice_u8(s.ptr + i, j - i);\n }\n return wuffs_base__make_slice_u8(NULL, 0);\n}\n" +
+ " ret.len = 0;\n return ret;\n}\n\nstatic inline wuffs_base__slice_u16 //\nwuffs_base__empty_slice_u16() {\n wuffs_base__slice_u16 ret;\n ret.ptr = NULL;\n ret.len = 0;\n return ret;\n}\n\nstatic inline wuffs_base__slice_u32 //\nwuffs_base__empty_slice_u32() {\n wuffs_base__slice_u32 ret;\n ret.ptr = NULL;\n ret.len = 0;\n return ret;\n}\n\nstatic inline wuffs_base__slice_u64 //\nwuffs_base__empty_slice_u64() {\n wuffs_base__slice_u64 ret;\n ret.ptr = NULL;\n ret.len = 0;\n return ret;\n}\n\nstatic inline wuffs_base__table_u8 //\nwuffs_base__empty_table_u8() {\n wuffs_base__table_u8 ret;\n ret.ptr = NULL;\n ret.width = 0;\n ret.height = 0;\n ret.stride = 0;\n return ret;\n}\n\nstatic inline wuffs_base__table_u16 //\nwuffs_base__empty_table_u16() {\n wuffs_base__table_u16 ret;\n ret.ptr = NULL;\n ret.width = 0;\n ret.height = 0;\n ret.stride = 0;\n return ret;\n}\n\nstatic inline wuffs_base__table_u32 //\nwuffs_base__empty_table_u32() {\n wuffs_base__table_u32 ret;\n ret.ptr = NULL;\n ret.width = 0;\n ret.height = 0;\n ret.stri" +
+ "de = 0;\n return ret;\n}\n\nstatic inline wuffs_base__table_u64 //\nwuffs_base__empty_table_u64() {\n wuffs_base__table_u64 ret;\n ret.ptr = NULL;\n ret.width = 0;\n ret.height = 0;\n ret.stride = 0;\n return ret;\n}\n\n// wuffs_base__slice_u8__subslice_i returns s[i:].\n//\n// It returns an empty slice if i is out of bounds.\nstatic inline wuffs_base__slice_u8 //\nwuffs_base__slice_u8__subslice_i(wuffs_base__slice_u8 s, uint64_t i) {\n if ((i <= SIZE_MAX) && (i <= s.len)) {\n return wuffs_base__make_slice_u8(s.ptr + i, s.len - i);\n }\n return wuffs_base__make_slice_u8(NULL, 0);\n}\n\n// wuffs_base__slice_u8__subslice_j returns s[:j].\n//\n// It returns an empty slice if j is out of bounds.\nstatic inline wuffs_base__slice_u8 //\nwuffs_base__slice_u8__subslice_j(wuffs_base__slice_u8 s, uint64_t j) {\n if ((j <= SIZE_MAX) && (j <= s.len)) {\n return wuffs_base__make_slice_u8(s.ptr, j);\n }\n return wuffs_base__make_slice_u8(NULL, 0);\n}\n\n// wuffs_base__slice_u8__subslice_ij returns s[i:j].\n//\n// It returns an empty slice" +
+ " if i or j is out of bounds.\nstatic inline wuffs_base__slice_u8 //\nwuffs_base__slice_u8__subslice_ij(wuffs_base__slice_u8 s,\n uint64_t i,\n uint64_t j) {\n if ((i <= j) && (j <= SIZE_MAX) && (j <= s.len)) {\n return wuffs_base__make_slice_u8(s.ptr + i, j - i);\n }\n return wuffs_base__make_slice_u8(NULL, 0);\n}\n" +
""
const BaseMemoryPrivateH = "" +
@@ -643,7 +644,7 @@
const AuxCborHh = "" +
"// ---------------- Auxiliary - CBOR\n\nnamespace wuffs_aux {\n\nstruct DecodeCborResult {\n DecodeCborResult(std::string&& error_message0, uint64_t cursor_position0);\n\n std::string error_message;\n uint64_t cursor_position;\n};\n\nclass DecodeCborCallbacks {\n public:\n // AppendXxx are called for leaf nodes: literals, numbers, strings, etc.\n\n virtual std::string AppendNull() = 0;\n virtual std::string AppendUndefined() = 0;\n virtual std::string AppendBool(bool val) = 0;\n virtual std::string AppendF64(double val) = 0;\n virtual std::string AppendI64(int64_t val) = 0;\n virtual std::string AppendU64(uint64_t val) = 0;\n virtual std::string AppendByteString(std::string&& val) = 0;\n virtual std::string AppendTextString(std::string&& val) = 0;\n virtual std::string AppendMinus1MinusX(uint64_t val) = 0;\n virtual std::string AppendCborSimpleValue(uint8_t val) = 0;\n virtual std::string AppendCborTag(uint64_t val) = 0;\n\n // Push and Pop are called for container nodes: CBOR arrays (lists) and CBOR\n // maps (dictiona" +
"ries).\n //\n // The flags bits combine exactly one of:\n // - WUFFS_BASE__TOKEN__VBD__STRUCTURE__FROM_NONE\n // - WUFFS_BASE__TOKEN__VBD__STRUCTURE__FROM_LIST\n // - WUFFS_BASE__TOKEN__VBD__STRUCTURE__FROM_DICT\n // and exactly one of:\n // - WUFFS_BASE__TOKEN__VBD__STRUCTURE__TO_NONE\n // - WUFFS_BASE__TOKEN__VBD__STRUCTURE__TO_LIST\n // - WUFFS_BASE__TOKEN__VBD__STRUCTURE__TO_DICT\n\n virtual std::string Push(uint32_t flags) = 0;\n virtual std::string Pop(uint32_t flags) = 0;\n\n // Done is always the last Callback method called by DecodeCbor, whether or\n // not parsing the input as CBOR encountered an error. Even when successful,\n // trailing data may remain in input and buffer.\n //\n // Do not keep a reference to buffer or buffer.data.ptr after Done returns,\n // as DecodeCbor may then de-allocate the backing array.\n //\n // The default Done implementation is a no-op.\n virtual void Done(DecodeCborResult& result,\n sync_io::Input& input,\n IOBuffer& buffer);\n};" +
- "\n\n// DecodeCbor calls callbacks based on the CBOR-formatted data in input.\n//\n// On success, the returned error_message is empty and cursor_position counts\n// the number of bytes consumed. On failure, error_message is non-empty and\n// cursor_position is the location of the error. That error may be a content\n// error (invalid CBOR) or an input error (e.g. network failure).\nDecodeCborResult DecodeCbor(DecodeCborCallbacks&& callbacks,\n sync_io::Input&& input,\n wuffs_base__slice_u32 quirks);\n\n} // namespace wuffs_aux\n" +
+ "\n\n// DecodeCbor calls callbacks based on the CBOR-formatted data in input.\n//\n// On success, the returned error_message is empty and cursor_position counts\n// the number of bytes consumed. On failure, error_message is non-empty and\n// cursor_position is the location of the error. That error may be a content\n// error (invalid CBOR) or an input error (e.g. network failure).\nDecodeCborResult DecodeCbor(\n DecodeCborCallbacks&& callbacks,\n sync_io::Input&& input,\n wuffs_base__slice_u32 quirks = wuffs_base__empty_slice_u32());\n\n} // namespace wuffs_aux\n" +
""
const AuxJsonCc = "" +
@@ -663,8 +664,8 @@
const AuxJsonHh = "" +
"// ---------------- Auxiliary - JSON\n\nnamespace wuffs_aux {\n\nstruct DecodeJsonResult {\n DecodeJsonResult(std::string&& error_message0, uint64_t cursor_position0);\n\n std::string error_message;\n uint64_t cursor_position;\n};\n\nclass DecodeJsonCallbacks {\n public:\n // AppendXxx are called for leaf nodes: literals, numbers and strings. For\n // strings, the Callbacks implementation is responsible for tracking map keys\n // versus other values.\n\n // The JSON file format as specified deals only with (UTF-8) text strings,\n // but an unofficial extension allows \"ijk\\x89m\" escapes within those\n // strings. DecodeJsonCallbacks' AppendByteString will not be called unless\n // WUFFS_JSON__QUIRK_ALLOW_BACKSLASH_X_AS_BYTES is passed to DecodeJson. If\n // it is passed, AppendTextString will not be called and all byte strings are\n // potentially invalid UTF-8. It is up to the AppendByteString implementation\n // whether to test the std::string for UTF-8 validity.\n //\n // The default AppendByteString implementation r" +
"eturns an error message.\n\n virtual std::string AppendNull() = 0;\n virtual std::string AppendBool(bool val) = 0;\n virtual std::string AppendF64(double val) = 0;\n virtual std::string AppendI64(int64_t val) = 0;\n virtual std::string AppendByteString(std::string&& val);\n virtual std::string AppendTextString(std::string&& val) = 0;\n\n // Push and Pop are called for container nodes: JSON arrays (lists) and JSON\n // objects (dictionaries).\n //\n // The flags bits combine exactly one of:\n // - WUFFS_BASE__TOKEN__VBD__STRUCTURE__FROM_NONE\n // - WUFFS_BASE__TOKEN__VBD__STRUCTURE__FROM_LIST\n // - WUFFS_BASE__TOKEN__VBD__STRUCTURE__FROM_DICT\n // and exactly one of:\n // - WUFFS_BASE__TOKEN__VBD__STRUCTURE__TO_NONE\n // - WUFFS_BASE__TOKEN__VBD__STRUCTURE__TO_LIST\n // - WUFFS_BASE__TOKEN__VBD__STRUCTURE__TO_DICT\n\n virtual std::string Push(uint32_t flags) = 0;\n virtual std::string Pop(uint32_t flags) = 0;\n\n // Done is always the last Callback method called by DecodeJson, whether or\n // not parsing th" +
- "e input as JSON encountered an error. Even when successful,\n // trailing data may remain in input and buffer. See \"Unintuitive JSON\n // Parsing\" (https://nullprogram.com/blog/2019/12/28/) which discusses JSON\n // parsing and when it stops.\n //\n // Do not keep a reference to buffer or buffer.data.ptr after Done returns,\n // as DecodeJson may then de-allocate the backing array.\n //\n // The default Done implementation is a no-op.\n virtual void Done(DecodeJsonResult& result,\n sync_io::Input& input,\n IOBuffer& buffer);\n};\n\n// DecodeJson calls callbacks based on the JSON-formatted data in input.\n//\n// On success, the returned error_message is empty and cursor_position counts\n// the number of bytes consumed. On failure, error_message is non-empty and\n// cursor_position is the location of the error. That error may be a content\n// error (invalid JSON) or an input error (e.g. network failure).\nDecodeJsonResult DecodeJson(DecodeJsonCallbacks&& callbacks,\n " +
- " sync_io::Input&& input,\n wuffs_base__slice_u32 quirks);\n\n} // namespace wuffs_aux\n" +
+ "e input as JSON encountered an error. Even when successful,\n // trailing data may remain in input and buffer. See \"Unintuitive JSON\n // Parsing\" (https://nullprogram.com/blog/2019/12/28/) which discusses JSON\n // parsing and when it stops.\n //\n // Do not keep a reference to buffer or buffer.data.ptr after Done returns,\n // as DecodeJson may then de-allocate the backing array.\n //\n // The default Done implementation is a no-op.\n virtual void Done(DecodeJsonResult& result,\n sync_io::Input& input,\n IOBuffer& buffer);\n};\n\n// DecodeJson calls callbacks based on the JSON-formatted data in input.\n//\n// On success, the returned error_message is empty and cursor_position counts\n// the number of bytes consumed. On failure, error_message is non-empty and\n// cursor_position is the location of the error. That error may be a content\n// error (invalid JSON) or an input error (e.g. network failure).\nDecodeJsonResult DecodeJson(\n DecodeJsonCallbacks&& callbacks,\n sync_io::I" +
+ "nput&& input,\n wuffs_base__slice_u32 quirks = wuffs_base__empty_slice_u32());\n\n} // namespace wuffs_aux\n" +
""
var AuxNonBaseCcFiles = []string{
diff --git a/release/c/wuffs-unsupported-snapshot.c b/release/c/wuffs-unsupported-snapshot.c
index dc52b2b..03baae5 100644
--- a/release/c/wuffs-unsupported-snapshot.c
+++ b/release/c/wuffs-unsupported-snapshot.c
@@ -904,6 +904,30 @@
return ret;
}
+static inline wuffs_base__slice_u16 //
+wuffs_base__empty_slice_u16() {
+ wuffs_base__slice_u16 ret;
+ ret.ptr = NULL;
+ ret.len = 0;
+ return ret;
+}
+
+static inline wuffs_base__slice_u32 //
+wuffs_base__empty_slice_u32() {
+ wuffs_base__slice_u32 ret;
+ ret.ptr = NULL;
+ ret.len = 0;
+ return ret;
+}
+
+static inline wuffs_base__slice_u64 //
+wuffs_base__empty_slice_u64() {
+ wuffs_base__slice_u64 ret;
+ ret.ptr = NULL;
+ ret.len = 0;
+ return ret;
+}
+
static inline wuffs_base__table_u8 //
wuffs_base__empty_table_u8() {
wuffs_base__table_u8 ret;
@@ -914,6 +938,36 @@
return ret;
}
+static inline wuffs_base__table_u16 //
+wuffs_base__empty_table_u16() {
+ wuffs_base__table_u16 ret;
+ ret.ptr = NULL;
+ ret.width = 0;
+ ret.height = 0;
+ ret.stride = 0;
+ return ret;
+}
+
+static inline wuffs_base__table_u32 //
+wuffs_base__empty_table_u32() {
+ wuffs_base__table_u32 ret;
+ ret.ptr = NULL;
+ ret.width = 0;
+ ret.height = 0;
+ ret.stride = 0;
+ return ret;
+}
+
+static inline wuffs_base__table_u64 //
+wuffs_base__empty_table_u64() {
+ wuffs_base__table_u64 ret;
+ ret.ptr = NULL;
+ ret.width = 0;
+ ret.height = 0;
+ ret.stride = 0;
+ return ret;
+}
+
// wuffs_base__slice_u8__subslice_i returns s[i:].
//
// It returns an empty slice if i is out of bounds.
@@ -8479,9 +8533,10 @@
// the number of bytes consumed. On failure, error_message is non-empty and
// cursor_position is the location of the error. That error may be a content
// error (invalid CBOR) or an input error (e.g. network failure).
-DecodeCborResult DecodeCbor(DecodeCborCallbacks&& callbacks,
- sync_io::Input&& input,
- wuffs_base__slice_u32 quirks);
+DecodeCborResult DecodeCbor(
+ DecodeCborCallbacks&& callbacks,
+ sync_io::Input&& input,
+ wuffs_base__slice_u32 quirks = wuffs_base__empty_slice_u32());
} // namespace wuffs_aux
@@ -8555,9 +8610,10 @@
// the number of bytes consumed. On failure, error_message is non-empty and
// cursor_position is the location of the error. That error may be a content
// error (invalid JSON) or an input error (e.g. network failure).
-DecodeJsonResult DecodeJson(DecodeJsonCallbacks&& callbacks,
- sync_io::Input&& input,
- wuffs_base__slice_u32 quirks);
+DecodeJsonResult DecodeJson(
+ DecodeJsonCallbacks&& callbacks,
+ sync_io::Input&& input,
+ wuffs_base__slice_u32 quirks = wuffs_base__empty_slice_u32());
} // namespace wuffs_aux
