object-introspection/test/test_prune.cpp
Alastair Robertson 45c3697f6b TypeGraph: Add Prune pass
This lets us remove fields from types when they are no longer needed,
speeding up later passes.

A secondary benefit of pruning unused types means that we sometimes
remove types for which we can't generate correct C++ code. This can
allow us to CodeGen for complex types which reference these broken types
without actually requiring them (e.g. as template parameters).

Add a new feature flag "prune-type-graph" to control this pass. It makes
sense to prune most of the time, but for testing CodeGen functionality
on a wider range of types, it will be useful to have the option to not
prune.
2023-07-26 16:56:34 +01:00

62 lines
1.3 KiB
C++

#include <gtest/gtest.h>
#include "oi/type_graph/Prune.h"
#include "test/type_graph_utils.h"
using type_graph::Prune;
TEST(PruneTest, PruneClass) {
test(Prune::createPass(), R"(
[0] Class: MyClass (size: 8)
Param
Primitive: int32_t
Param
Value: "123"
Parent (offset: 0)
[1] Class: MyParent (size: 4)
Member: a (offset: 0)
Primitive: int32_t
Member: a (offset: 0)
Primitive: int32_t
Member: b (offset: 4)
Primitive: int32_t
Function: foo
Function: bar
)",
R"(
[0] Class: MyClass (size: 8)
Member: a (offset: 0)
Primitive: int32_t
Member: b (offset: 4)
Primitive: int32_t
)");
}
TEST(PruneTest, RecurseClassMember) {
test(Prune::createPass(), R"(
[0] Class: MyClass (size: 0)
Member: xxx (offset: 0)
[1] Class: ClassA (size: 12)
Function: foo
)",
R"(
[0] Class: MyClass (size: 0)
Member: xxx (offset: 0)
[1] Class: ClassA (size: 12)
)");
}
TEST(PruneTest, RecurseClassChild) {
test(Prune::createPass(), R"(
[0] Class: MyClass (size: 0)
Child
[1] Class: ClassA (size: 12)
Function: foo
)",
R"(
[0] Class: MyClass (size: 0)
Child
[1] Class: ClassA (size: 12)
)");
}