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// Copyright 2022 The Tint Authors.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
#include "src/tint/transform/expand_compound_assignment.h"
#include <utility>
#include "src/tint/transform/test_helper.h"
namespace tint::transform {
namespace {
using ExpandCompoundAssignmentTest = TransformTest;
TEST_F(ExpandCompoundAssignmentTest, ShouldRunEmptyModule) {
auto* src = R"()";
EXPECT_FALSE(ShouldRun<ExpandCompoundAssignment>(src));
}
TEST_F(ExpandCompoundAssignmentTest, ShouldRunHasCompoundAssignment) {
auto* src = R"(
fn foo() {
var v : i32;
v += 1;
}
)";
EXPECT_TRUE(ShouldRun<ExpandCompoundAssignment>(src));
}
TEST_F(ExpandCompoundAssignmentTest, ShouldRunHasIncrementDecrement) {
auto* src = R"(
fn foo() {
var v : i32;
v++;
}
)";
EXPECT_TRUE(ShouldRun<ExpandCompoundAssignment>(src));
}
TEST_F(ExpandCompoundAssignmentTest, Basic) {
auto* src = R"(
fn main() {
var v : i32;
v += 1;
}
)";
auto* expect = R"(
fn main() {
var v : i32;
v = (v + 1);
}
)";
auto got = Run<ExpandCompoundAssignment>(src);
EXPECT_EQ(expect, str(got));
}
TEST_F(ExpandCompoundAssignmentTest, LhsPointer) {
auto* src = R"(
fn main() {
var v : i32;
let p = &v;
*p += 1;
}
)";
auto* expect = R"(
fn main() {
var v : i32;
let p = &(v);
let tint_symbol = &(*(p));
*(tint_symbol) = (*(tint_symbol) + 1);
}
)";
auto got = Run<ExpandCompoundAssignment>(src);
EXPECT_EQ(expect, str(got));
}
TEST_F(ExpandCompoundAssignmentTest, LhsStructMember) {
auto* src = R"(
struct S {
m : f32,
}
fn main() {
var s : S;
s.m += 1.0;
}
)";
auto* expect = R"(
struct S {
m : f32,
}
fn main() {
var s : S;
s.m = (s.m + 1.0);
}
)";
auto got = Run<ExpandCompoundAssignment>(src);
EXPECT_EQ(expect, str(got));
}
TEST_F(ExpandCompoundAssignmentTest, LhsArrayElement) {
auto* src = R"(
var<private> a : array<i32, 4>;
fn idx() -> i32 {
a[1] = 42;
return 1;
}
fn main() {
a[idx()] += 1;
}
)";
auto* expect = R"(
var<private> a : array<i32, 4>;
fn idx() -> i32 {
a[1] = 42;
return 1;
}
fn main() {
let tint_symbol = &(a[idx()]);
*(tint_symbol) = (*(tint_symbol) + 1);
}
)";
auto got = Run<ExpandCompoundAssignment>(src);
EXPECT_EQ(expect, str(got));
}
TEST_F(ExpandCompoundAssignmentTest, LhsVectorComponent_ArrayAccessor) {
auto* src = R"(
var<private> v : vec4<i32>;
fn idx() -> i32 {
v.y = 42;
return 1;
}
fn main() {
v[idx()] += 1;
}
)";
auto* expect = R"(
var<private> v : vec4<i32>;
fn idx() -> i32 {
v.y = 42;
return 1;
}
fn main() {
let tint_symbol = &(v);
let tint_symbol_1 = idx();
(*(tint_symbol))[tint_symbol_1] = ((*(tint_symbol))[tint_symbol_1] + 1);
}
)";
auto got = Run<ExpandCompoundAssignment>(src);
EXPECT_EQ(expect, str(got));
}
TEST_F(ExpandCompoundAssignmentTest, LhsVectorComponent_MemberAccessor) {
auto* src = R"(
fn main() {
var v : vec4<i32>;
v.y += 1;
}
)";
auto* expect = R"(
fn main() {
var v : vec4<i32>;
v.y = (v.y + 1);
}
)";
auto got = Run<ExpandCompoundAssignment>(src);
EXPECT_EQ(expect, str(got));
}
TEST_F(ExpandCompoundAssignmentTest, LhsMatrixColumn) {
auto* src = R"(
var<private> m : mat4x4<f32>;
fn idx() -> i32 {
m[0].y = 42.0;
return 1;
}
fn main() {
m[idx()] += 1.0;
}
)";
auto* expect = R"(
var<private> m : mat4x4<f32>;
fn idx() -> i32 {
m[0].y = 42.0;
return 1;
}
fn main() {
let tint_symbol = &(m[idx()]);
*(tint_symbol) = (*(tint_symbol) + 1.0);
}
)";
auto got = Run<ExpandCompoundAssignment>(src);
EXPECT_EQ(expect, str(got));
}
TEST_F(ExpandCompoundAssignmentTest, LhsMatrixElement) {
auto* src = R"(
var<private> m : mat4x4<f32>;
fn idx1() -> i32 {
m[0].y = 42.0;
return 1;
}
fn idx2() -> i32 {
m[1].z = 42.0;
return 1;
}
fn main() {
m[idx1()][idx2()] += 1.0;
}
)";
auto* expect = R"(
var<private> m : mat4x4<f32>;
fn idx1() -> i32 {
m[0].y = 42.0;
return 1;
}
fn idx2() -> i32 {
m[1].z = 42.0;
return 1;
}
fn main() {
let tint_symbol = &(m[idx1()]);
let tint_symbol_1 = idx2();
(*(tint_symbol))[tint_symbol_1] = ((*(tint_symbol))[tint_symbol_1] + 1.0);
}
)";
auto got = Run<ExpandCompoundAssignment>(src);
EXPECT_EQ(expect, str(got));
}
TEST_F(ExpandCompoundAssignmentTest, LhsMultipleSideEffects) {
auto* src = R"(
struct S {
a : array<vec4<f32>, 3>,
}
@group(0) @binding(0) var<storage, read_write> buffer : array<S>;
var<private> p : i32;
fn idx1() -> i32 {
p += 1;
return 3;
}
fn idx2() -> i32 {
p *= 3;
return 2;
}
fn idx3() -> i32 {
p -= 2;
return 1;
}
fn main() {
buffer[idx1()].a[idx2()][idx3()] += 1.0;
}
)";
auto* expect = R"(
struct S {
a : array<vec4<f32>, 3>,
}
@group(0) @binding(0) var<storage, read_write> buffer : array<S>;
var<private> p : i32;
fn idx1() -> i32 {
p = (p + 1);
return 3;
}
fn idx2() -> i32 {
p = (p * 3);
return 2;
}
fn idx3() -> i32 {
p = (p - 2);
return 1;
}
fn main() {
let tint_symbol = &(buffer[idx1()].a[idx2()]);
let tint_symbol_1 = idx3();
(*(tint_symbol))[tint_symbol_1] = ((*(tint_symbol))[tint_symbol_1] + 1.0);
}
)";
auto got = Run<ExpandCompoundAssignment>(src);
EXPECT_EQ(expect, str(got));
}
TEST_F(ExpandCompoundAssignmentTest, ForLoopInit) {
auto* src = R"(
var<private> a : array<vec4<i32>, 4>;
var<private> p : i32;
fn idx1() -> i32 {
p = (p + 1);
return 3;
}
fn idx2() -> i32 {
p = (p * 3);
return 2;
}
fn main() {
for (a[idx1()][idx2()] += 1; ; ) {
break;
}
}
)";
auto* expect = R"(
var<private> a : array<vec4<i32>, 4>;
var<private> p : i32;
fn idx1() -> i32 {
p = (p + 1);
return 3;
}
fn idx2() -> i32 {
p = (p * 3);
return 2;
}
fn main() {
let tint_symbol = &(a[idx1()]);
let tint_symbol_1 = idx2();
for((*(tint_symbol))[tint_symbol_1] = ((*(tint_symbol))[tint_symbol_1] + 1); ; ) {
break;
}
}
)";
auto got = Run<ExpandCompoundAssignment>(src);
EXPECT_EQ(expect, str(got));
}
TEST_F(ExpandCompoundAssignmentTest, ForLoopCont) {
auto* src = R"(
var<private> a : array<vec4<i32>, 4>;
var<private> p : i32;
fn idx1() -> i32 {
p = (p + 1);
return 3;
}
fn idx2() -> i32 {
p = (p * 3);
return 2;
}
fn main() {
for (; ; a[idx1()][idx2()] += 1) {
break;
}
}
)";
auto* expect = R"(
var<private> a : array<vec4<i32>, 4>;
var<private> p : i32;
fn idx1() -> i32 {
p = (p + 1);
return 3;
}
fn idx2() -> i32 {
p = (p * 3);
return 2;
}
fn main() {
loop {
{
break;
}
continuing {
let tint_symbol = &(a[idx1()]);
let tint_symbol_1 = idx2();
(*(tint_symbol))[tint_symbol_1] = ((*(tint_symbol))[tint_symbol_1] + 1);
}
}
}
)";
auto got = Run<ExpandCompoundAssignment>(src);
EXPECT_EQ(expect, str(got));
}
TEST_F(ExpandCompoundAssignmentTest, Increment_I32) {
auto* src = R"(
fn main() {
var v : i32;
v++;
}
)";
auto* expect = R"(
fn main() {
var v : i32;
v = (v + 1);
}
)";
auto got = Run<ExpandCompoundAssignment>(src);
EXPECT_EQ(expect, str(got));
}
TEST_F(ExpandCompoundAssignmentTest, Increment_U32) {
auto* src = R"(
fn main() {
var v : u32;
v++;
}
)";
auto* expect = R"(
fn main() {
var v : u32;
v = (v + 1);
}
)";
auto got = Run<ExpandCompoundAssignment>(src);
EXPECT_EQ(expect, str(got));
}
TEST_F(ExpandCompoundAssignmentTest, Decrement_I32) {
auto* src = R"(
fn main() {
var v : i32;
v--;
}
)";
auto* expect = R"(
fn main() {
var v : i32;
v = (v - 1);
}
)";
auto got = Run<ExpandCompoundAssignment>(src);
EXPECT_EQ(expect, str(got));
}
TEST_F(ExpandCompoundAssignmentTest, Decrement_U32) {
auto* src = R"(
fn main() {
var v : u32;
v--;
}
)";
auto* expect = R"(
fn main() {
var v : u32;
v = (v - 1);
}
)";
auto got = Run<ExpandCompoundAssignment>(src);
EXPECT_EQ(expect, str(got));
}
TEST_F(ExpandCompoundAssignmentTest, Increment_LhsPointer) {
auto* src = R"(
fn main() {
var v : i32;
let p = &v;
*p++;
}
)";
auto* expect = R"(
fn main() {
var v : i32;
let p = &(v);
let tint_symbol = &(*(p));
*(tint_symbol) = (*(tint_symbol) + 1);
}
)";
auto got = Run<ExpandCompoundAssignment>(src);
EXPECT_EQ(expect, str(got));
}
TEST_F(ExpandCompoundAssignmentTest, Increment_LhsStructMember) {
auto* src = R"(
struct S {
m : i32,
}
fn main() {
var s : S;
s.m++;
}
)";
auto* expect = R"(
struct S {
m : i32,
}
fn main() {
var s : S;
s.m = (s.m + 1);
}
)";
auto got = Run<ExpandCompoundAssignment>(src);
EXPECT_EQ(expect, str(got));
}
TEST_F(ExpandCompoundAssignmentTest, Increment_LhsArrayElement) {
auto* src = R"(
var<private> a : array<i32, 4>;
fn idx() -> i32 {
a[1] = 42;
return 1;
}
fn main() {
a[idx()]++;
}
)";
auto* expect = R"(
var<private> a : array<i32, 4>;
fn idx() -> i32 {
a[1] = 42;
return 1;
}
fn main() {
let tint_symbol = &(a[idx()]);
*(tint_symbol) = (*(tint_symbol) + 1);
}
)";
auto got = Run<ExpandCompoundAssignment>(src);
EXPECT_EQ(expect, str(got));
}
TEST_F(ExpandCompoundAssignmentTest, Increment_LhsVectorComponent_ArrayAccessor) {
auto* src = R"(
var<private> v : vec4<i32>;
fn idx() -> i32 {
v.y = 42;
return 1;
}
fn main() {
v[idx()]++;
}
)";
auto* expect = R"(
var<private> v : vec4<i32>;
fn idx() -> i32 {
v.y = 42;
return 1;
}
fn main() {
let tint_symbol = &(v);
let tint_symbol_1 = idx();
(*(tint_symbol))[tint_symbol_1] = ((*(tint_symbol))[tint_symbol_1] + 1);
}
)";
auto got = Run<ExpandCompoundAssignment>(src);
EXPECT_EQ(expect, str(got));
}
TEST_F(ExpandCompoundAssignmentTest, Increment_LhsVectorComponent_MemberAccessor) {
auto* src = R"(
fn main() {
var v : vec4<i32>;
v.y++;
}
)";
auto* expect = R"(
fn main() {
var v : vec4<i32>;
v.y = (v.y + 1);
}
)";
auto got = Run<ExpandCompoundAssignment>(src);
EXPECT_EQ(expect, str(got));
}
TEST_F(ExpandCompoundAssignmentTest, Increment_ForLoopCont) {
auto* src = R"(
var<private> a : array<vec4<i32>, 4>;
var<private> p : i32;
fn idx1() -> i32 {
p = (p + 1);
return 3;
}
fn idx2() -> i32 {
p = (p * 3);
return 2;
}
fn main() {
for (; ; a[idx1()][idx2()]++) {
break;
}
}
)";
auto* expect = R"(
var<private> a : array<vec4<i32>, 4>;
var<private> p : i32;
fn idx1() -> i32 {
p = (p + 1);
return 3;
}
fn idx2() -> i32 {
p = (p * 3);
return 2;
}
fn main() {
loop {
{
break;
}
continuing {
let tint_symbol = &(a[idx1()]);
let tint_symbol_1 = idx2();
(*(tint_symbol))[tint_symbol_1] = ((*(tint_symbol))[tint_symbol_1] + 1);
}
}
}
)";
auto got = Run<ExpandCompoundAssignment>(src);
EXPECT_EQ(expect, str(got));
}
} // namespace
} // namespace tint::transform