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Add bytecode interpreter tests for map() using member functions. #3992

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Add bytecode interpreter tests for map() using member functions. #3992

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69 changes: 69 additions & 0 deletions xls/dslx/bytecode/bytecode_interpreter_test.cc
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Original file line number Diff line number Diff line change
Expand Up @@ -2822,5 +2822,74 @@ fn main() -> bits[bit_count<Foo>()] {
EXPECT_EQ(bits, UBits(0x5a4ad1, 24));
}

TEST_F(BytecodeInterpreterTest, MapArrayElementInstanceMethod) {
constexpr std::string_view kProgram =
R"(
struct S {
x: u32
}

impl S {
fn plus1(self) -> u32 {
self.x + 1
}
}

fn main() -> u32[3] {
map([S { x: 10 }, S { x: 1 }, S { x: 5 }], S::plus1)
}
)";
XLS_ASSERT_OK_AND_ASSIGN(InterpValue value, Interpret(kProgram, "main"));
EXPECT_EQ(value, *InterpValue::MakeArray({InterpValue::MakeU32(11),
InterpValue::MakeU32(2),
InterpValue::MakeU32(6)}));
}

TEST_F(BytecodeInterpreterTest, MapStaticImplFunction) {
constexpr std::string_view kProgram =
R"(
struct S {}

impl S {
fn plus1(x: u32) -> u32 {
x + 1
}
}

fn main() -> u32[3] {
map([u32:10, 1, 5], S::plus1)
}
)";

XLS_ASSERT_OK_AND_ASSIGN(InterpValue value, Interpret(kProgram, "main"));
EXPECT_EQ(value, *InterpValue::MakeArray({InterpValue::MakeU32(11),
InterpValue::MakeU32(2),
InterpValue::MakeU32(6)}));
}

TEST_F(BytecodeInterpreterTest, MapAuxiliaryObjectFunction) {
constexpr std::string_view kProgram =
R"(
struct S {
x: u32
}

impl S {
fn plus(self, y: u32) -> u32 {
self.x + y
}
}

fn main() -> u32[3] {
let inst = S { x: 10 };
map([u32:10, 1, 5], inst.plus)
}
)";
XLS_ASSERT_OK_AND_ASSIGN(InterpValue value, Interpret(kProgram, "main"));
EXPECT_EQ(value, *InterpValue::MakeArray({InterpValue::MakeU32(20),
InterpValue::MakeU32(11),
InterpValue::MakeU32(15)}));
}

} // namespace
} // namespace xls::dslx
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