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tools: add lldb pretty printer for std.MultiArrayList.Slice

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This commit is contained in:
Jacob Young 2023-03-05 23:40:54 -05:00 committed by Andrew Kelley
parent ac1b0e832b
commit c29c4c6f70
2 changed files with 50 additions and 6 deletions
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15
lib/std/multi_array_list.zig
View File

@ -68,6 +68,15 @@ pub fn MultiArrayList(comptime S: type) type {
other.deinit(gpa);
self.* = undefined;
}
/// This function is used in the debugger pretty formatters in tools/ to fetch the
/// child field order and entry type to facilitate fancy debug printing for this type.
fn dbHelper(self: *Slice, child: *S, field: *Field, entry: *Entry) void {
_ = self;
_ = child;
_ = field;
_ = entry;
}
};
const Self = @This();
@ -463,16 +472,18 @@ pub fn MultiArrayList(comptime S: type) type {
} });
};
/// This function is used in the debugger pretty formatters in tools/ to fetch the
/// child type to facilitate fancy debug printing for this type.
fn dbHelper(self: *Self, child: *S, entry: *Entry) void {
/// child field order and entry type to facilitate fancy debug printing for this type.
fn dbHelper(self: *Self, child: *S, field: *Field, entry: *Entry) void {
_ = self;
_ = child;
_ = field;
_ = entry;
}
comptime {
if (builtin.mode == .Debug) {
_ = dbHelper;
_ = Slice.dbHelper;
}
}
};

41
tools/lldb_pretty_printers.py
View File

@ -201,7 +201,7 @@ class std_MultiArrayList_SynthProvider:
value_type = self.value.type
for helper in self.value.target.FindFunctions('%s.dbHelper' % value_type.name, lldb.eFunctionNameTypeFull):
ptr_self_type, ptr_child_type, ptr_entry_type = helper.function.type.GetFunctionArgumentTypes()
ptr_self_type, ptr_child_type, ptr_field_type, ptr_entry_type = helper.function.type.GetFunctionArgumentTypes()
if ptr_self_type.GetPointeeType() == value_type: break
else: return
@ -221,12 +221,44 @@ class std_MultiArrayList_SynthProvider:
offset = 0
data = lldb.SBData()
for field in self.entry_type.fields:
ptr_field_type = field.type
field_size = ptr_field_type.GetPointeeType().size
data.Append(self.bytes.CreateChildAtOffset(field.name, offset + index * field_size, ptr_field_type).address_of.data)
field_type = field.type.GetPointeeType()
field_size = field_type.size
data.Append(self.bytes.CreateChildAtOffset(field.name, offset + index * field_size, field_type).address_of.data)
offset += self.capacity * field_size
return self.bytes.CreateValueFromData('[%d]' % index, data, self.entry_type)
except: return None
class std_MultiArrayList_Slice_SynthProvider:
def __init__(self, value, _=None): self.value = value
def update(self):
try:
self.len = 0
value_type = self.value.type
for helper in self.value.target.FindFunctions('%s.dbHelper' % value_type.name, lldb.eFunctionNameTypeFull):
ptr_self_type, ptr_child_type, ptr_field_type, ptr_entry_type = helper.function.type.GetFunctionArgumentTypes()
if ptr_self_type.GetPointeeType() == value_type: break
else: return
self.fields = {member.name: index for index, member in enumerate(ptr_field_type.GetPointeeType().enum_members)}
self.entry_type = ptr_entry_type.GetPointeeType()
self.ptrs = self.value.GetChildMemberWithName('ptrs')
self.len = self.value.GetChildMemberWithName('len').unsigned
self.capacity = self.value.GetChildMemberWithName('capacity').unsigned
except: pass
def has_children(self): return True
def num_children(self): return self.len
def get_child_index(self, name):
try: return int(name.removeprefix('[').removesuffix(']'))
except: return -1
def get_child_at_index(self, index):
try:
if index < 0 or index >= self.len: return None
data = lldb.SBData()
for field in self.entry_type.fields:
field_type = field.type.GetPointeeType()
data.Append(self.ptrs.child[self.fields[field.name.removesuffix('_ptr')]].CreateChildAtOffset(field.name, index * field_type.size, field_type).address_of.data)
return self.ptrs.CreateValueFromData('[%d]' % index, data, self.entry_type)
except: return None
class std_HashMapUnmanaged_SynthProvider:
def __init__(self, value, _=None): self.value = value
@ -556,6 +588,7 @@ def __lldb_init_module(debugger, _=None):
add(debugger, category='zig.std', type='mem.Allocator', summary='${var.ptr}')
add(debugger, category='zig.std', regex=True, type='^segmented_list\\.SegmentedList\\(.*\\)$', identifier='std_SegmentedList', synth=True, expand=True, summary='len=${var.len}')
add(debugger, category='zig.std', regex=True, type='^multi_array_list\\.MultiArrayList\\(.*\\)$', identifier='std_MultiArrayList', synth=True, expand=True, summary='len=${var.len} capacity=${var.capacity}')
add(debugger, category='zig.std', regex=True, type='^multi_array_list\\.MultiArrayList\\(.*\\)\\.Slice$', identifier='std_MultiArrayList_Slice', synth=True, expand=True, summary='len=${var.len} capacity=${var.capacity}')
add(debugger, category='zig.std', regex=True, type=MultiArrayList_Entry('.*'), identifier='std_Entry', synth=True, inline_children=True, summary=True)
add(debugger, category='zig.std', regex=True, type='^hash_map\\.HashMapUnmanaged\\(.*\\)$', identifier='std_HashMapUnmanaged', synth=True, expand=True, summary=True)
add(debugger, category='zig.std', regex=True, type='^hash_map\\.HashMapUnmanaged\\(.*\\)\\.Entry$', identifier = 'std_Entry', synth=True, inline_children=True, summary=True)