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rntviewer/src/hover.cpp
silverweed cdcf1db83a more stuff
2024-09-25 14:57:06 +02:00

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struct Sec_Hover_Info {
Byte_Range rng;
// A string tree where children are more indented than parents
String8_Node *desc;
};
template <typename T> T bswap_if_needed(T x) { return x; }
template <> u16 bswap_if_needed(u16 x) { return bswap(x); }
template <> u32 bswap_if_needed(u32 x) { return bswap(x); }
template <> u64 bswap_if_needed(u64 x) { return bswap(x); }
template <typename T>
String8_Node *hover_display_val_be(Arena *arena, String8_Node *prev, const char *fmt, T val)
{
static_assert(!std::is_same_v<T, String8>);
val = bswap_if_needed(val);
return push_str8_node_child(arena, prev, fmt, val);
}
String8_Node *hover_display_val_str8(Arena *arena, String8_Node *prev, const char *fmt, String8 val)
{
return push_str8_node_child(arena, prev, fmt, val.str ? val.c() : "");
}
template <typename T>
String8_Node *hover_display_val_le(Arena *arena, String8_Node *prev, const char *fmt, T val)
{
return push_str8_node_child(arena, prev, fmt, val);
}
template <typename T>
String8_Node *hover_display_val_le_abs(Arena *arena, String8_Node *prev, const char *fmt, T val)
{
return push_str8_node_child(arena, prev, fmt, std::abs(val));
}
String8_Node *hover_display_generic_range(Arena *arena, String8_Node *prev, const char *desc, const u8 *)
{
return push_str8_node_child(arena, prev, desc);
}
internal
String8_Node *hover_display_datetime_str(Arena *arena, String8_Node *prev, const char *fmt_pre, u32 datetime)
{
datetime = bswap(datetime);
// datetime:
// year (6b) | month (4b) | day (5b) | hour (5b) | min (6b) | sec (6b)
u32 year = (datetime >> 26) + 1995;
u32 month = ((datetime & 0x3ff'ffff) >> 22);
u32 day = (datetime & 0x3f'ffff) >> 17;
u32 hour = (datetime & 0x1'ffff) >> 12;
u32 min = (datetime & 0xfff) >> 6;
u32 sec = datetime & 0x3f;
return push_str8_node_child(arena, prev, "%s%u/%02u/%02u %02u:%02u:%02u", fmt_pre, year, month, day, hour, min, sec);
}
// Returns null is `src` doesn't point to a zipped block
internal
String8_Node *display_val_rootzip(Arena *arena, String8_Node *prev, const char *fmt, const u8 *src)
{
const u8 Z_DEFLATED = 8;
String8 zip_method;
if (src[0] == 'Z' && src[1] == 'L' && src[2] == Z_DEFLATED) {
zip_method = str8("ZLIB");
} else if (src[0] == 'C' && src[1] == 'S' && src[2] == Z_DEFLATED) {
zip_method = str8("Old");
} else if (src[0] == 'X' && src[1] == 'Z' && src[2] == 0) {
zip_method = str8("LZMA");
} else if (src[0] == 'L' && src[1] == '4') {
zip_method = str8("LZ4");
} else if (src[0] == 'Z' && src[1] == 'S' && src[2] == 1) {
zip_method = str8("ZSTD");
} else {
return nullptr;
}
u32 comp_size = src[3] | (src[4] << 8) | (src[5] << 16);
u32 uncomp_size = src[6] | (src[7] << 8) | (src[8] << 16);
String8_Node *sn = push_str8_node_child(arena, prev, "%s", fmt);
sn = push_str8_node_child(arena, sn, "Zip method: %s", zip_method.c());
sn = push_str8_node(arena, sn, "Compressed size: %s", to_pretty_size(arena, comp_size).c());
sn = push_str8_node(arena, sn, "Uncompressed size: %s", to_pretty_size(arena, uncomp_size).c());
sn = push_str8_node(arena, sn, "Comp. ratio: %.2f", (f32)comp_size / uncomp_size);
return sn;
}
template <typename T>
using Display_Fn = String8_Node *(*)(Arena *, String8_Node *, const char *, T);
enum Hover_Section_Flags {
HoverSec_None = 0,
HoverSec_HideIfNotHovered = 1,
};
// Functor used by get_section_hover_info to describe the structure of a section and print data about it.
struct Sec_Hover_Fn {
u64 start; // the start of the section (including the pre_size, e.g. the TKey)
u64 roff; // the offset relative to the section start
const u8 *data; // the entire file data
const Section &section;
Arena *arena;
Sec_Hover_Info &info;
u64 &cur_field_off;
b8 display_grouped;
b8 ended = false;
u8 cur_section_nesting = 0;
u8 innermost_section_highlighted = 0;
template <typename F>
void titled_section(const char *title, F &&sec_body_fn, u64 flags = 0)
{
// if (ended)
// return;
++cur_section_nesting;
String8_Node *prev_desc = info.desc;
info.desc = push_str8_node_child(arena, prev_desc, title);
u64 sec_start = cur_field_off;
sec_body_fn();
assert(cur_field_off >= sec_start);
b8 hovered = roff >= sec_start && roff <= cur_field_off;
if (!hovered & (flags & HoverSec_HideIfNotHovered)) {
pop_str8_node_child(prev_desc, info.desc);
} else if (display_grouped) {
// if we're in display_grouped mode, we want to highlight the entire range of the section;
u64 sec_len = cur_field_off - sec_start;
info.rng = { start + sec_start, sec_len };
// In case of nested sections, only highlight the innermost
// FIXME!
info.desc->selected = innermost_section_highlighted < cur_section_nesting;
innermost_section_highlighted = max(cur_section_nesting, innermost_section_highlighted);
// ended = true;
}
--cur_section_nesting;
info.desc = prev_desc;
return;
}
// returns true if `val_read` was read
template <typename T>
b8 field(const char *desc_fmt, Display_Fn<T> display_val, T *val_read = nullptr)
{
static_assert(!std::is_same_v<T, String8>, "use field_str8 instead.");
// if (ended)
// return false;
u64 field_len = sizeof(T);
b8 hovered = cur_field_off <= roff && roff < cur_field_off + field_len;
T val;
memcpy(&val, (u8 *)data + start + cur_field_off, field_len);
String8_Node *desc = display_val(arena, info.desc, desc_fmt, val);
desc->selected = hovered && !display_grouped;
if (val_read)
*val_read = val;
if (display_grouped || hovered) {
info.rng = { start + cur_field_off, field_len };
// truncate the hovered section here if we're not in display_grouped mode.
// ended = !display_grouped;
}
cur_field_off += field_len;
return true;
}
template <typename TStrSize>
void field_str8(const char *desc_fmt, Display_Fn<String8> display_val = hover_display_val_str8)
{
// if (ended)
// return;
// String size can be stored as different types, like u8 (by ROOT I/O) or u32 (by RNTuple).
TStrSize str_size;
memcpy(&str_size, data + start + cur_field_off, sizeof(TStrSize));
// DEBUG
if (str_size > 1000) {
printf("read str_size = %u at offset 0x%lX!\n", str_size, start + cur_field_off);
// ended = true;
return;
}
u64 field_len = sizeof(TStrSize) + (u64)str_size;
b8 hovered = cur_field_off <= roff && roff < cur_field_off + field_len;
u8 *buf = arena_push_array_nozero<u8>(arena, str_size + 1);
memcpy(buf, data + start + cur_field_off + sizeof(TStrSize), str_size);
buf[str_size] = 0;
String8 s = { buf, str_size };
String8_Node *desc = display_val(arena, info.desc, desc_fmt, s);
desc->selected = hovered && !display_grouped;
if (display_grouped || hovered) {
info.rng = { start + cur_field_off, field_len };
// ended = !display_grouped;
}
cur_field_off += field_len;
}
template <typename T>
b8 field_be(const char *desc_fmt, T *val_read = nullptr)
{
return field<T>(desc_fmt, hover_display_val_be<T>, val_read);
}
template <typename T>
b8 field_le(const char *desc_fmt, T *val_read = nullptr)
{
return field<T>(desc_fmt, hover_display_val_le<T>, val_read);
}
// An unspecified range of bytes
void range(const char *desc, u64 range_len, Display_Fn<const u8 *> display_val = hover_display_generic_range)
{
// if (ended)
// return;
b8 hovered = cur_field_off <= roff && roff < cur_field_off + range_len;
String8_Node *dsc = display_val(arena, info.desc, desc, data + start + cur_field_off);
dsc->selected = hovered && !display_grouped;
if (display_grouped || hovered) {
info.rng = { start + cur_field_off, range_len };
// ended = !display_grouped;
}
cur_field_off += range_len;
}
// Returns true if `was_zipped` was read.
b8 maybe_rootzip(b8 *was_zipped = nullptr)
{
// if (ended)
// return false;
// TODO boundary checks
const u64 range_len = 9;
b8 hovered = cur_field_off <= roff && roff < cur_field_off + range_len;
if (display_val_rootzip(arena, info.desc, "Zipped Block", data + start + cur_field_off)) {
if (display_grouped || hovered) {
if (was_zipped)
*was_zipped = true;
info.rng = { start + cur_field_off, range_len };
info.desc->selected = hovered;
// ended = !display_grouped;
}
cur_field_off += range_len;
} else if (was_zipped) {
*was_zipped = false;
}
return true;
}
void tkey()
{
titled_section("TKey", [this] {
u16 version_be;
memcpy(&version_be, data + start + 4, sizeof(u16));
u32 version = bswap(version_be);
b8 is_big = version > 1000;
if (is_big) {
field_be<u32>("NBytes: %u");
field<u16>("Version: %u", [] (Arena *arena, String8_Node *prev, const char *fmt, u16 x) {
x = bswap(x);
x -= 1000;
return push_str8_node_child(arena, prev, fmt, x);
});
field_be<u32>("Obj Len: %u");
field<u32>("Datetime: ", hover_display_datetime_str);
field_be<u16>("Key Len: %u");
field_be<u16>("Cycle: %u");
field_be<u64>("Seek Key: 0x%" PRIX64);
field_be<u64>("Seek Pdir: 0x%" PRIX64);
field_str8<u8>("Class Name: %s");
field_str8<u8>("Obj Name: %s");
field_str8<u8>("Obj Title: %s");
} else {
field_be<u32>("NBytes: %u");
field<u16>("Version: %u", [] (Arena *arena, String8_Node *prev, const char *fmt, u16 x) {
x = bswap(x);
return push_str8_node_child(arena, prev, fmt, x);
});
field_be<u32>("Obj Len: %u");
field<u32>("Datetime: ", hover_display_datetime_str);
field_be<u16>("Key Len: %u");
field_be<u16>("Cycle: %u");
field_be<u32>("Seek Key: 0x%" PRIX64);
field_be<u32>("Seek Pdir: 0x%" PRIX64);
field_str8<u8>("Class Name: %s");
field_str8<u8>("Obj Name: %s");
field_str8<u8>("Obj Title: %s");
}
});
}
void envelope_preamble()
{
static const char *const envelope_names[] = { "INVALID", "Header", "Footer", "Page List" };
titled_section("Envelope Preamble", [this] {
field<u16>("Envelope type: %s", [] (Arena *arena, String8_Node *prev, const char *fmt, u16 val) {
const char *name = (val >= countof(envelope_names)) ? "Unknown" : envelope_names[val];
return push_str8_node_child(arena, prev, fmt, name);
});
range("Envelope size: %s", 6, [] (Arena *arena, String8_Node *prev, const char *fmt, const u8 *payload) {
u64 size;
memcpy(&size, payload, 6);
return push_str8_node_child(arena, prev, fmt, to_pretty_size(arena, size));
});
});
}
enum Frame_Type {
Frame_INVALID,
Frame_Record,
Frame_List
};
Frame_Type frame_header(u64 &size, u32 *n_items = nullptr, const char *title = nullptr)
{
String8 titlestr = title ? push_str8f(arena, "Frame Header: %s", title) : str8("Frame Header");
Frame_Type frame_type = Frame_INVALID;
titled_section(titlestr.c(), [this, &frame_type, &frame_size = size, n_items, titlestr] {
i64 size;
memcpy(&size, data + start + cur_field_off, sizeof(size));
printf("frame header %s read size %ld at 0x%lX\n", titlestr.c(), size, start + cur_field_off);
if (size >= 0) {
frame_type = Frame_Record;
field<i64>("Record frame size: %" PRIi64 " B", hover_display_val_le_abs<i64>);
} else {
frame_type = Frame_List;
assert(n_items);
memcpy(n_items, data + start + cur_field_off + sizeof(i64), sizeof(*n_items));
titled_section("List Frame", [this] {
field<i64>("Size: %" PRIi64 " B", hover_display_val_le_abs<i64>);
field_le<u32>("N Items: %u");
});
}
frame_size = std::abs(size);
});
assert(frame_type == Frame_Record || frame_type == Frame_List);
return frame_type;
}
void field_desc()
{
static const char *const field_struct_names[] = {
"Leaf", "Collection", "Record", "Variant", "Unsplit"
};
titled_section("Field", [this] {
u64 start_off = cur_field_off;
u64 size;
Frame_Type ftype = frame_header(size);
if (ftype != Frame_Record)
return;
// DEBUG
if (size > 100000) {
printf("read field_frame_size = %lu at offset 0x%lX!\n", size, start + cur_field_off);
// ended = true;
return;
}
field_le<u32>("Field version: %u");
field_le<u32>("Type version: %u");
field_le<u32>("On-disk parent id: %u");
field<u16>("Field structure: %s", [] (Arena *arena, String8_Node *prev, const char *fmt, u16 type) {
const char *name = (type >= countof(field_struct_names)) ? "Unknown" : field_struct_names[type];
return push_str8_node_child(arena, prev, fmt, name);
});
u16 flags;
if (!field<u16>("Flags: 0b%b", hover_display_val_le, &flags))
return;
if (flags & RNTupleSerializer::kFlagRepetitiveField)
field_le<u64>("N Repetitions: %" PRIu64);
if (flags & RNTupleSerializer::kFlagProjectedField)
field_le<u32>("On disk proj.src id: %u");
if (flags & RNTupleSerializer::kFlagHasTypeChecksum)
field_le<u32>("Checksum: %u");
field_str8<u32>("Name: %s");
field_str8<u32>("Type Name: %s");
field_str8<u32>("Type Alias: %s");
field_str8<u32>("Description: %s");
u64 extra_size = size - (cur_field_off - start_off);
if (extra_size > 0)
range("Unknown", extra_size);
}, HoverSec_HideIfNotHovered);
}
void column_desc(const char *title)
{
titled_section(title, [this, title] {
u64 start_off = cur_field_off;
u64 size;
Frame_Type ftype = frame_header(size);
if (ftype != Frame_Record)
return;
// DEBUG
if (size > 100000) {
printf("read column_desc_size = %lu at offset 0x%lX!\n", size, start + cur_field_off);
// ended = true;
return;
}
field_le<i64>("Size: %" PRIi64 " B");
field<u16>("Column type: %s", [](Arena *arena, String8_Node *prev, const char *fmt, u16 val) {
const char *readable_col_type = get_column_type_name(val);
return push_str8_node_child(arena, prev, fmt, readable_col_type);
});
field_le<u16>("Bits on storage: %u");
field_le<u32>("Field ID: %u");
u16 flags;
if (!field<u16>("Flags: 0b%b", hover_display_val_le, &flags))
return;
field_le<u16>("Representation idx: %u");
if (flags & RNTupleSerializer::kFlagDeferredColumn) {
field_le<u64>("First element: %" PRIu64);
}
if (flags & RNTupleSerializer::kFlagHasValueRange) {
field_le<double>("Value Min: %f");
field_le<double>("Value Max: %f");
}
assert(cur_field_off >= start_off);
if (size < cur_field_off - start_off) {
printf("column_desc(%s) should be of size %lu but we allocated %lu bytes for it?\n", title, size, cur_field_off - start_off);
return;
}
u64 extra_size = size - (cur_field_off - start_off);
printf("extra size: %lu - %lu = %lu\n", size, cur_field_off - start_off, extra_size);
if (extra_size > 0)
range("Unknown", extra_size);
}, HoverSec_HideIfNotHovered);
}
template <typename F>
void list_frame(const char *title, F &&per_elem_fn)
{
if (ended)
return;
u64 size;
u32 n_elems;
Frame_Type ftype = frame_header(size, &n_elems, title);
if (ftype != Frame_List)
return;
// DEBUG
if (n_elems > 100000) {
printf("read n_elems = %u at offset 0x%lX!\n", n_elems, start + cur_field_off);
// ended = true;
return;
}
for (u32 i = 0; i < n_elems; ++i) {
per_elem_fn();
if (ended)
break;
}
}
void schema_description(const char *title)
{
titled_section(title, [this] {
// TODO: Columns and alias columns are not the same
list_frame("Fields", [this] { field_desc(); });
list_frame("Columns", [this] { column_desc("Column"); });
list_frame("Alias Columns", [this] { column_desc("Alias Column"); });
list_frame("Extra Type Infos", [this] {
field_le<u32>("Content identifier: %lu");
field_le<u32>("Type version from: %lu");
field_le<u32>("Type version to: %lu");
});
});
}
void locator(const char *title)
{
// TODO
// return titled_section(title, [this] {
// return true;
// });
}
void cluster_group()
{
titled_section("Cluster Group", [this] {
u64 size;
u32 n_items;
Frame_Type ftype = frame_header(size, &n_items);
assert(ftype == Frame_List);
for (u32 i = 0; i < n_items; ++i) {
field_le<u64>("Min Entry: %" PRIu64);
field_le<u64>("Entry Span: %" PRIu64);
field_le<u32>("N Clusters: %u");
field_le<u64>("Env.Link Len: %" PRIu64);
locator("Env.Link Locator");
}
});
}
void rntuple_anchor()
{
titled_section("RNTuple Anchor", [this] {
tkey();
titled_section("Data", [this] {
field<u32>("Object len: %u", [] (Arena *arena, String8_Node *prev, const char *fmt, u32 x) {
x = bswap(x);
x -= 0x4000'0000;
return push_str8_node_child(arena, prev, fmt, x);
});
field_be<u16>("Class version: %u");
field_be<u16>("Version Epoch: %u");
field_be<u16>("Version Major: %u");
field_be<u16>("Version Minor: %u");
field_be<u16>("Version Patch: %u");
field_be<u64>("Seek Header: 0x%" PRIX64);
field_be<u64>("NBytes Header: %u");
field_be<u64>("Len Header: %u");
field_be<u64>("Seek Footer: 0x%" PRIX64);
field_be<u64>("NBytes Footer: %u");
field_be<u64>("Len Footer: %u");
field_be<u64>("Max Key Size: %u");
field_le<u64>("Checksum: 0x%" PRIX64);
});
});
}
void rntuple_header()
{
titled_section("RNTuple Header", [this] {
tkey();
b8 zipped;
if (!maybe_rootzip(&zipped))
return;
if (zipped) {
// XXX: why -1?
range("Compressed payload", section.range.len - section.post_size - sizeof(u64) - 1);
field_le<u64>("Checksum: 0x%" PRIX64);
} else {
envelope_preamble();
// NOTE: flags in principle require a more complex handling, but for now they are unused,
// so they're always occupying only 8 bytes.
field_le<u64>("Flags: 0x%" PRIX64);
field_str8<u32>("Name: %s");
field_str8<u32>("Description: %s");
field_str8<u32>("ROOT version: %s");
schema_description("Schema Description");
field_le<u64>("Checksum: 0x%" PRIX64);
}
});
}
void rntuple_footer()
{
titled_section("RNTuple Footer", [this] {
tkey();
b8 zipped;
if (!maybe_rootzip(&zipped))
return;
if (zipped) {
// XXX: why -1?
range("Payload", section.range.len - section.post_size - sizeof(u64) - 1);
field_le<u64>("Checksum: 0x%" PRIX64);
} else {
envelope_preamble();
// NOTE: flags in principle require a more complex handling, but for now they are unused,
// so they're always occupying only 8 bytes.
field_le<u64>("Flags: 0x%" PRIX64);
field_le<u64>("Header checksum: 0x%" PRIX64);
u64 size;
Frame_Type ftype = frame_header(size);
assert(ftype == Frame_Record);
schema_description("Schema Extension");
// - list of column group record frames (TODO)
//frame_header("Column Groups");
// - list of cluster group record frames (TODO)
//frame_header("Cluster Groups");
range("Payload", section.range.len - cur_field_off);
field_le<u64>("Checksum: 0x%" PRIX64);
}
});
}
void tfile_header()
{
titled_section("TFile Header", [this] {
u32 root_version_be;
memcpy(&root_version_be, data + start + 4, sizeof(u32));
u32 root_version = bswap(root_version_be);
b8 is_big = root_version > 1000000;
if (is_big) {
field_be<u32>("ROOT magic number");
field<u32>("ROOT version: %u", [] (Arena *arena, String8_Node *prev, const char *fmt, u32 x) {
x = bswap(x);
x -= 1000000;
return push_str8_node_child(arena, prev, fmt, x);
});
field_be<u32>("fBEGIN: 0x%" PRIX64);
field_be<u64>("fEND: 0x%" PRIX64);
field_be<u64>("Seek Free: 0x%" PRIX64);
field_be<u32>("NBytes Free: %u");
field_be<u32>("N Free: %u");
field_be<u32>("NBytes Name: %u");
field_be<u8>("Units: %u");
field_be<u32>("Compression: %u");
field_be<u64>("Seek Info: 0x%" PRIX64);
field_be<u32>("NBytes Info: %u");
range("Padding", section.post_size);
} else {
field_be<u32>("ROOT magic number");
field_be<u32>("ROOT version: %u");
field_be<u32>("fBEGIN: 0x%" PRIX64);
field_be<u32>("fEND: 0x%" PRIX64);
field_be<u32>("Seek Free: 0x%" PRIX64);
field_be<u32>("NBytes Free: %u");
field_be<u32>("N Free: %u");
field_be<u32>("NBytes Name: %u");
field_be<u8>("Units: %u");
field_be<u32>("Compression: %u");
field_be<u32>("Seek Info: 0x%" PRIX64);
field_be<u32>("NBytes Info: %u");
range("Padding", section.post_size);
}
});
}
void tfile_object()
{
titled_section("TFile Object", [this] {
tkey();
field_str8<u8>("File Name: %s");
field_str8<u8>("File Title: %s");
u16 version_be;
memcpy(&version_be, data + cur_field_off, sizeof(u16));
u16 version = bswap(version_be);
b8 is_big = version > 1000;
if (is_big) {
field<u16>("Version: %u", [] (Arena *arena, String8_Node *prev, const char *fmt, u16 x) {
x = bswap(x);
x -= 1000;
return push_str8_node_child(arena, prev, fmt, x);
});
field<u32>("Created: ", hover_display_datetime_str);
field<u32>("Modified: ", hover_display_datetime_str);
field_be<u32>("NBytes Key: %u");
field_be<u32>("NBytes Name: %u");
field_be<u64>("Seek Dir: 0x%" PRIX64) ;
field_be<u64>("Seek Parent: 0x%" PRIX64) ;
field_be<u64>("Seek Keys: 0x%" PRIX64) ;
field_be<u16>("UUID Vers.Class: %u");
field_le<u16>("UUID: %u");
} else {
field_be<u16>("Version: %u");
field<u32>("Created: ", hover_display_datetime_str);
field<u32>("Modified: ", hover_display_datetime_str);
field_be<u32>("NBytes Key: %u");
field_be<u32>("NBytes Name: %u");
field_be<u32>("Seek Dir: 0x%" PRIX64) ;
field_be<u32>("Seek Parent: 0x%" PRIX64) ;
field_be<u32>("Seek Keys: 0x%" PRIX64) ;
field_be<u16>("UUID Vers.Class: %u");
field_le<u16>("UUID: %u");
range("Padding", 3 * sizeof(u32));
}
});
}
};
// `off` is the absolute offset into `data`.
internal
Sec_Hover_Info get_section_hover_info(Arena *arena, Section section, u64 off, const u8 *data, b8 display_grouped)
{
Sec_Hover_Info info {};
// printf("off: 0x%" PRIX64 ", sec start - pre_size: (0x%" PRIX64 " - %" PRIu64 ") = 0x%" PRIX64 "\n", off, section.range.start, section.pre_size, section.range.start - section.pre_size);
assert(off >= section.range.start - section.pre_size);
// Hover info header
String8 sec_name = section_names[section.id];
if (section.id == Sec_Page && section.info) {
Page_Info_Node *pinfo = (Page_Info_Node *)section.info;
info.desc = push_str8_node(arena, nullptr, "%s [%s]",
sec_name.c(), pinfo->elem_type_name.c());
push_str8_node_child(arena, info.desc, "Field: %s", pinfo->owner_field_name.c());
push_str8_node_child(arena, info.desc, "N. Elems: %d", abs(pinfo->n_elems));
push_str8_node_child(arena, info.desc, "Bits per elem: %u", pinfo->bits_per_elem);
push_str8_node_child(arena, info.desc, "-----------");
} else {
info.desc = push_str8_node(arena, nullptr, "%s", sec_name.c());
}
u64 start = section.range.start - section.pre_size;
u64 roff = off - start; // offset relative to `section`
u64 cur_field_off = 0;
Sec_Hover_Fn hover { start, roff, data, section, arena, info, cur_field_off, display_grouped };
switch (section.id) {
case Sec_RNTuple_Anchor: {
hover.rntuple_anchor();
} break;
case Sec_TFile_Header: {
hover.tfile_header();
} break;
case Sec_TFile_Object: {
hover.tfile_object();
} break;
case Sec_RNTuple_Header: {
hover.rntuple_header();
} break;
case Sec_RNTuple_Footer: {
hover.rntuple_footer();
} break;
#if 0
case Sec_Page_List: {
hover.tkey()
|| hover.maybe_rootzip()
|| hover.range("Payload", section.range.len - section.post_size) // TODO: improve
|| hover.field_le<u64>("Checksum: 0x%" PRIX64)
;
} break;
case Sec_Page: {
// only try hovering a key if this is the first page of the cluster (<=> pre_size != 0)
b8 ok = section.pre_size && hover.tkey();
ok = ok || hover.maybe_rootzip()
|| hover.range("Payload", section.range.len - section.post_size) // TODO: improve
|| hover.field_le<u64>("Checksum: 0x%" PRIX64)
;
} break;
case Sec_TFile_Info: {
hover.tkey()
hover.maybe_rootzip()
// || hover.field<u32>("Byte Count: %u", [] (Arena *arena, String8_Node *prev, const char *fmt, u32 x) {
// x = bswap(x);
// x -= 0x400000000;
// return push_str8_node_child(arena, prev, fmt, x);
// })
// || hover.field_be<u16>("Version: %u")
// || hover_try_object(hover)
// || hover.field_be<u8>("Name: %u")
// || hover.field_be<u32>("N Objects: %u")
|| hover.range("Payload", section.range.len) // TODO: improve
;
} break;
case Sec_TFile_FreeList: {
if (!hover.tkey()) {
u16 version_be;
memcpy(&version_be, data + start + hover.cur_field_off, sizeof(u16));
u32 version = bswap(version_be);
b8 is_big = version > 1000;
if (is_big) {
hover.field<u16>("Version: %u", [] (Arena *arena, String8_Node *prev, const char *fmt, u16 x) {
x = bswap(x);
x -= 1000;
return push_str8_node_child(arena, prev, fmt, x);
})
|| hover.field_be<u64>("First: 0x%" PRIX64)
|| hover.field_be<u64>("Last: 0x%" PRIX64)
;
} else {
hover.field<u16>("Version: %u", [] (Arena *arena, String8_Node *prev, const char *fmt, u16 x) {
x = bswap(x);
return push_str8_node_child(arena, prev, fmt, x);
})
|| hover.field_be<u32>("First: 0x%X")
|| hover.field_be<u32>("Last: 0x%X")
;
}
}
} break;
#endif
default:;
}
return info;
}
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