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// Copyright 2022 The Dawn & Tint Authors
//
// Redistribution and use in source and binary forms, with or without
// modification, are permitted provided that the following conditions are met:
//
// 1. Redistributions of source code must retain the above copyright notice, this
// list of conditions and the following disclaimer.
//
// 2. Redistributions in binary form must reproduce the above copyright notice,
// this list of conditions and the following disclaimer in the documentation
// and/or other materials provided with the distribution.
//
// 3. Neither the name of the copyright holder nor the names of its
// contributors may be used to endorse or promote products derived from
// this software without specific prior written permission.
//
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
// AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
// IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
// DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
// FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
// DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
// SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
// CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
// OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
#include <utility>
#include "src/tint/lang/core/fluent_types.h"
#include "src/tint/lang/wgsl/ast/transform/helper_test.h"
#include "src/tint/lang/wgsl/ast/transform/hoist_to_decl_before.h"
#include "src/tint/lang/wgsl/program/clone_context.h"
#include "src/tint/lang/wgsl/program/program_builder.h"
#include "src/tint/lang/wgsl/resolver/resolve.h"
#include "src/tint/lang/wgsl/sem/if_statement.h"
#include "src/tint/lang/wgsl/sem/index_accessor_expression.h"
#include "src/tint/lang/wgsl/sem/statement.h"
using namespace tint::core::number_suffixes; // NOLINT
using namespace tint::core::fluent_types; // NOLINT
namespace tint::ast::transform {
namespace {
using HoistToDeclBeforeTest = ::testing::Test;
TEST_F(HoistToDeclBeforeTest, VarInit) {
// fn f() {
// var a = 1;
// }
ProgramBuilder b;
auto* expr = b.Expr(1_i);
auto* var = b.Decl(b.Var("a", expr));
b.Func("f", tint::Empty, b.ty.void_(), Vector{var});
Program original(resolver::Resolve(b));
ProgramBuilder cloned_b;
program::CloneContext ctx(&cloned_b, &original);
HoistToDeclBefore hoistToDeclBefore(ctx);
auto* sem_expr = ctx.src->Sem().Get(expr);
hoistToDeclBefore.Add(sem_expr, expr, HoistToDeclBefore::VariableKind::kLet);
ctx.Clone();
Program cloned(resolver::Resolve(cloned_b));
auto* expect = R"(
fn f() {
let tint_symbol : i32 = 1i;
var a = tint_symbol;
}
)";
EXPECT_EQ(expect, str(cloned));
}
TEST_F(HoistToDeclBeforeTest, ForLoopInit) {
// fn f() {
// for(var a = 1i; true; ) {
// }
// }
ProgramBuilder b;
auto* expr = b.Expr(1_i);
auto* s = b.For(b.Decl(b.Var("a", expr)), b.Expr(true), nullptr, b.Block());
b.Func("f", tint::Empty, b.ty.void_(), Vector{s});
Program original(resolver::Resolve(b));
ProgramBuilder cloned_b;
program::CloneContext ctx(&cloned_b, &original);
HoistToDeclBefore hoistToDeclBefore(ctx);
auto* sem_expr = ctx.src->Sem().Get(expr);
hoistToDeclBefore.Add(sem_expr, expr, HoistToDeclBefore::VariableKind::kVar);
ctx.Clone();
Program cloned(resolver::Resolve(cloned_b));
auto* expect = R"(
fn f() {
{
var tint_symbol : i32 = 1i;
var a = tint_symbol;
loop {
if (!(true)) {
break;
}
{
}
}
}
}
)";
EXPECT_EQ(expect, str(cloned));
}
TEST_F(HoistToDeclBeforeTest, ForLoopCond) {
// fn f() {
// const a = true;
// for(; a; ) {
// }
// }
ProgramBuilder b;
auto* var = b.Decl(b.Const("a", b.Expr(true)));
auto* expr = b.Expr("a");
auto* s = b.For(nullptr, expr, nullptr, b.Block());
b.Func("f", tint::Empty, b.ty.void_(), Vector{var, s});
Program original(resolver::Resolve(b));
ProgramBuilder cloned_b;
program::CloneContext ctx(&cloned_b, &original);
HoistToDeclBefore hoistToDeclBefore(ctx);
auto* sem_expr = ctx.src->Sem().GetVal(expr);
hoistToDeclBefore.Add(sem_expr, expr, HoistToDeclBefore::VariableKind::kConst);
ctx.Clone();
Program cloned(resolver::Resolve(cloned_b));
auto* expect = R"(
fn f() {
const a = true;
loop {
const tint_symbol = a;
if (!(tint_symbol)) {
break;
}
{
}
}
}
)";
EXPECT_EQ(expect, str(cloned));
}
TEST_F(HoistToDeclBeforeTest, ForLoopCont) {
// fn f() {
// for(; true; var a = 1i) {
// }
// }
ProgramBuilder b;
auto* expr = b.Expr(1_i);
auto* s = b.For(nullptr, b.Expr(true), b.Decl(b.Var("a", expr)), b.Block());
b.Func("f", tint::Empty, b.ty.void_(), Vector{s});
Program original(resolver::Resolve(b));
ProgramBuilder cloned_b;
program::CloneContext ctx(&cloned_b, &original);
HoistToDeclBefore hoistToDeclBefore(ctx);
auto* sem_expr = ctx.src->Sem().Get(expr);
hoistToDeclBefore.Add(sem_expr, expr, HoistToDeclBefore::VariableKind::kLet);
ctx.Clone();
Program cloned(resolver::Resolve(cloned_b));
auto* expect = R"(
fn f() {
loop {
if (!(true)) {
break;
}
{
}
continuing {
let tint_symbol : i32 = 1i;
var a = tint_symbol;
}
}
}
)";
EXPECT_EQ(expect, str(cloned));
}
TEST_F(HoistToDeclBeforeTest, WhileCond) {
// fn f() {
// var a : bool;
// while(a) {
// }
// }
ProgramBuilder b;
auto* var = b.Decl(b.Var("a", b.ty.bool_()));
auto* expr = b.Expr("a");
auto* s = b.While(expr, b.Block());
b.Func("f", tint::Empty, b.ty.void_(), Vector{var, s});
Program original(resolver::Resolve(b));
ProgramBuilder cloned_b;
program::CloneContext ctx(&cloned_b, &original);
HoistToDeclBefore hoistToDeclBefore(ctx);
auto* sem_expr = ctx.src->Sem().GetVal(expr);
hoistToDeclBefore.Add(sem_expr, expr, HoistToDeclBefore::VariableKind::kVar);
ctx.Clone();
Program cloned(resolver::Resolve(cloned_b));
auto* expect = R"(
fn f() {
var a : bool;
loop {
var tint_symbol : bool = a;
if (!(tint_symbol)) {
break;
}
{
}
}
}
)";
EXPECT_EQ(expect, str(cloned));
}
TEST_F(HoistToDeclBeforeTest, ElseIf) {
// fn f() {
// const a = true;
// if (true) {
// } else if (a) {
// } else {
// }
// }
ProgramBuilder b;
auto* var = b.Decl(b.Const("a", b.Expr(true)));
auto* expr = b.Expr("a");
auto* s = b.If(b.Expr(true), b.Block(), //
b.Else(b.If(expr, b.Block(), //
b.Else(b.Block()))));
b.Func("f", tint::Empty, b.ty.void_(), Vector{var, s});
Program original(resolver::Resolve(b));
ProgramBuilder cloned_b;
program::CloneContext ctx(&cloned_b, &original);
HoistToDeclBefore hoistToDeclBefore(ctx);
auto* sem_expr = ctx.src->Sem().GetVal(expr);
hoistToDeclBefore.Add(sem_expr, expr, HoistToDeclBefore::VariableKind::kConst);
ctx.Clone();
Program cloned(resolver::Resolve(cloned_b));
auto* expect = R"(
fn f() {
const a = true;
if (true) {
} else {
const tint_symbol = a;
if (tint_symbol) {
} else {
}
}
}
)";
EXPECT_EQ(expect, str(cloned));
}
TEST_F(HoistToDeclBeforeTest, Array1D) {
// fn f() {
// var a : array<i32, 10>;
// var b = a[0];
// }
ProgramBuilder b;
auto* var1 = b.Decl(b.Var("a", b.ty.array<i32, 10>()));
auto* expr = b.IndexAccessor("a", 0_i);
auto* var2 = b.Decl(b.Var("b", expr));
b.Func("f", tint::Empty, b.ty.void_(), Vector{var1, var2});
Program original(resolver::Resolve(b));
ProgramBuilder cloned_b;
program::CloneContext ctx(&cloned_b, &original);
HoistToDeclBefore hoistToDeclBefore(ctx);
auto* sem_expr = ctx.src->Sem().Get(expr);
hoistToDeclBefore.Add(sem_expr, expr, HoistToDeclBefore::VariableKind::kLet);
ctx.Clone();
Program cloned(resolver::Resolve(cloned_b));
auto* expect = R"(
fn f() {
var a : array<i32, 10u>;
let tint_symbol : i32 = a[0i];
var b = tint_symbol;
}
)";
EXPECT_EQ(expect, str(cloned));
}
TEST_F(HoistToDeclBeforeTest, Array2D) {
// fn f() {
// var a : array<array<i32, 10>, 10>;
// var b = a[0][0];
// }
ProgramBuilder b;
auto* var1 = b.Decl(b.Var("a", b.ty.array(b.ty.array<i32, 10>(), 10_i)));
auto* expr = b.IndexAccessor(b.IndexAccessor("a", 0_i), 0_i);
auto* var2 = b.Decl(b.Var("b", expr));
b.Func("f", tint::Empty, b.ty.void_(), Vector{var1, var2});
Program original(resolver::Resolve(b));
ProgramBuilder cloned_b;
program::CloneContext ctx(&cloned_b, &original);
HoistToDeclBefore hoistToDeclBefore(ctx);
auto* sem_expr = ctx.src->Sem().Get(expr);
hoistToDeclBefore.Add(sem_expr, expr, HoistToDeclBefore::VariableKind::kVar);
ctx.Clone();
Program cloned(resolver::Resolve(cloned_b));
auto* expect = R"(
fn f() {
var a : array<array<i32, 10u>, 10i>;
var tint_symbol : i32 = a[0i][0i];
var b = tint_symbol;
}
)";
EXPECT_EQ(expect, str(cloned));
}
TEST_F(HoistToDeclBeforeTest, Prepare_ForLoopCond) {
// fn f() {
// var a : bool;
// for(; a; ) {
// }
// }
ProgramBuilder b;
auto* var = b.Decl(b.Var("a", b.ty.bool_()));
auto* expr = b.Expr("a");
auto* s = b.For(nullptr, expr, nullptr, b.Block());
b.Func("f", tint::Empty, b.ty.void_(), Vector{var, s});
Program original(resolver::Resolve(b));
ProgramBuilder cloned_b;
program::CloneContext ctx(&cloned_b, &original);
HoistToDeclBefore hoistToDeclBefore(ctx);
auto* sem_expr = ctx.src->Sem().GetVal(expr);
hoistToDeclBefore.Prepare(sem_expr);
ctx.Clone();
Program cloned(resolver::Resolve(cloned_b));
auto* expect = R"(
fn f() {
var a : bool;
loop {
if (!(a)) {
break;
}
{
}
}
}
)";
EXPECT_EQ(expect, str(cloned));
}
TEST_F(HoistToDeclBeforeTest, Prepare_ForLoopCont) {
// fn f() {
// for(; true; var a = 1i) {
// }
// }
ProgramBuilder b;
auto* expr = b.Expr(1_i);
auto* s = b.For(nullptr, b.Expr(true), b.Decl(b.Var("a", expr)), b.Block());
b.Func("f", tint::Empty, b.ty.void_(), Vector{s});
Program original(resolver::Resolve(b));
ProgramBuilder cloned_b;
program::CloneContext ctx(&cloned_b, &original);
HoistToDeclBefore hoistToDeclBefore(ctx);
auto* sem_expr = ctx.src->Sem().Get(expr);
hoistToDeclBefore.Prepare(sem_expr);
ctx.Clone();
Program cloned(resolver::Resolve(cloned_b));
auto* expect = R"(
fn f() {
loop {
if (!(true)) {
break;
}
{
}
continuing {
var a = 1i;
}
}
}
)";
EXPECT_EQ(expect, str(cloned));
}
TEST_F(HoistToDeclBeforeTest, Prepare_ElseIf) {
// fn f() {
// var a : bool;
// if (true) {
// } else if (a) {
// } else {
// }
// }
ProgramBuilder b;
auto* var = b.Decl(b.Var("a", b.ty.bool_()));
auto* expr = b.Expr("a");
auto* s = b.If(b.Expr(true), b.Block(), //
b.Else(b.If(expr, b.Block(), //
b.Else(b.Block()))));
b.Func("f", tint::Empty, b.ty.void_(), Vector{var, s});
Program original(resolver::Resolve(b));
ProgramBuilder cloned_b;
program::CloneContext ctx(&cloned_b, &original);
HoistToDeclBefore hoistToDeclBefore(ctx);
auto* sem_expr = ctx.src->Sem().GetVal(expr);
hoistToDeclBefore.Prepare(sem_expr);
ctx.Clone();
Program cloned(resolver::Resolve(cloned_b));
auto* expect = R"(
fn f() {
var a : bool;
if (true) {
} else {
if (a) {
} else {
}
}
}
)";
EXPECT_EQ(expect, str(cloned));
}
TEST_F(HoistToDeclBeforeTest, InsertBefore_Block) {
// fn foo() {
// }
// fn f() {
// var a = 1i;
// }
ProgramBuilder b;
b.Func("foo", tint::Empty, b.ty.void_(), tint::Empty);
auto* var = b.Decl(b.Var("a", b.Expr(1_i)));
b.Func("f", tint::Empty, b.ty.void_(), Vector{var});
Program original(resolver::Resolve(b));
ProgramBuilder cloned_b;
program::CloneContext ctx(&cloned_b, &original);
HoistToDeclBefore hoistToDeclBefore(ctx);
auto* before_stmt = ctx.src->Sem().Get(var);
auto* new_stmt = ctx.dst->CallStmt(ctx.dst->Call("foo"));
hoistToDeclBefore.InsertBefore(before_stmt, new_stmt);
ctx.Clone();
Program cloned(resolver::Resolve(cloned_b));
auto* expect = R"(
fn foo() {
}
fn f() {
foo();
var a = 1i;
}
)";
EXPECT_EQ(expect, str(cloned));
}
TEST_F(HoistToDeclBeforeTest, InsertBefore_Block_Function) {
// fn foo() {
// }
// fn f() {
// var a = 1i;
// }
ProgramBuilder b;
b.Func("foo", tint::Empty, b.ty.void_(), tint::Empty);
auto* var = b.Decl(b.Var("a", b.Expr(1_i)));
b.Func("f", tint::Empty, b.ty.void_(), Vector{var});
Program original(resolver::Resolve(b));
ProgramBuilder cloned_b;
program::CloneContext ctx(&cloned_b, &original);
HoistToDeclBefore hoistToDeclBefore(ctx);
auto* before_stmt = ctx.src->Sem().Get(var);
hoistToDeclBefore.InsertBefore(before_stmt,
[&] { return ctx.dst->CallStmt(ctx.dst->Call("foo")); });
ctx.Clone();
Program cloned(resolver::Resolve(cloned_b));
auto* expect = R"(
fn foo() {
}
fn f() {
foo();
var a = 1i;
}
)";
EXPECT_EQ(expect, str(cloned));
}
TEST_F(HoistToDeclBeforeTest, InsertBefore_ForLoopInit) {
// fn foo() {
// }
// fn f() {
// for(var a = 1i; true;) {
// }
// }
ProgramBuilder b;
b.Func("foo", tint::Empty, b.ty.void_(), tint::Empty);
auto* var = b.Decl(b.Var("a", b.Expr(1_i)));
auto* s = b.For(var, b.Expr(true), nullptr, b.Block());
b.Func("f", tint::Empty, b.ty.void_(), Vector{s});
Program original(resolver::Resolve(b));
ProgramBuilder cloned_b;
program::CloneContext ctx(&cloned_b, &original);
HoistToDeclBefore hoistToDeclBefore(ctx);
auto* before_stmt = ctx.src->Sem().Get(var);
auto* new_stmt = ctx.dst->CallStmt(ctx.dst->Call("foo"));
hoistToDeclBefore.InsertBefore(before_stmt, new_stmt);
ctx.Clone();
Program cloned(resolver::Resolve(cloned_b));
auto* expect = R"(
fn foo() {
}
fn f() {
{
foo();
var a = 1i;
loop {
if (!(true)) {
break;
}
{
}
}
}
}
)";
EXPECT_EQ(expect, str(cloned));
}
TEST_F(HoistToDeclBeforeTest, InsertBefore_ForLoopInit_Function) {
// fn foo() {
// }
// fn f() {
// for(var a = 1i; true;) {
// }
// }
ProgramBuilder b;
b.Func("foo", tint::Empty, b.ty.void_(), tint::Empty);
auto* var = b.Decl(b.Var("a", b.Expr(1_i)));
auto* s = b.For(var, b.Expr(true), nullptr, b.Block());
b.Func("f", tint::Empty, b.ty.void_(), Vector{s});
Program original(resolver::Resolve(b));
ProgramBuilder cloned_b;
program::CloneContext ctx(&cloned_b, &original);
HoistToDeclBefore hoistToDeclBefore(ctx);
auto* before_stmt = ctx.src->Sem().Get(var);
hoistToDeclBefore.InsertBefore(before_stmt,
[&] { return ctx.dst->CallStmt(ctx.dst->Call("foo")); });
ctx.Clone();
Program cloned(resolver::Resolve(cloned_b));
auto* expect = R"(
fn foo() {
}
fn f() {
{
foo();
var a = 1i;
loop {
if (!(true)) {
break;
}
{
}
}
}
}
)";
EXPECT_EQ(expect, str(cloned));
}
TEST_F(HoistToDeclBeforeTest, InsertBefore_ForLoopCont) {
// fn foo() {
// }
// fn f() {
// var a = 1i;
// for(; true; a+=1i) {
// }
// }
ProgramBuilder b;
b.Func("foo", tint::Empty, b.ty.void_(), tint::Empty);
auto* var = b.Decl(b.Var("a", b.Expr(1_i)));
auto* cont = b.CompoundAssign("a", b.Expr(1_i), core::BinaryOp::kAdd);
auto* s = b.For(nullptr, b.Expr(true), cont, b.Block());
b.Func("f", tint::Empty, b.ty.void_(), Vector{var, s});
Program original(resolver::Resolve(b));
ProgramBuilder cloned_b;
program::CloneContext ctx(&cloned_b, &original);
HoistToDeclBefore hoistToDeclBefore(ctx);
auto* before_stmt = ctx.src->Sem().Get(cont->As<Statement>());
auto* new_stmt = ctx.dst->CallStmt(ctx.dst->Call("foo"));
hoistToDeclBefore.InsertBefore(before_stmt, new_stmt);
ctx.Clone();
Program cloned(resolver::Resolve(cloned_b));
auto* expect = R"(
fn foo() {
}
fn f() {
var a = 1i;
loop {
if (!(true)) {
break;
}
{
}
continuing {
foo();
a += 1i;
}
}
}
)";
EXPECT_EQ(expect, str(cloned));
}
TEST_F(HoistToDeclBeforeTest, InsertBefore_ForLoopCont_Function) {
// fn foo() {
// }
// fn f() {
// var a = 1i;
// for(; true; a+=1i) {
// }
// }
ProgramBuilder b;
b.Func("foo", tint::Empty, b.ty.void_(), tint::Empty);
auto* var = b.Decl(b.Var("a", b.Expr(1_i)));
auto* cont = b.CompoundAssign("a", b.Expr(1_i), core::BinaryOp::kAdd);
auto* s = b.For(nullptr, b.Expr(true), cont, b.Block());
b.Func("f", tint::Empty, b.ty.void_(), Vector{var, s});
Program original(resolver::Resolve(b));
ProgramBuilder cloned_b;
program::CloneContext ctx(&cloned_b, &original);
HoistToDeclBefore hoistToDeclBefore(ctx);
auto* before_stmt = ctx.src->Sem().Get(cont->As<Statement>());
hoistToDeclBefore.InsertBefore(before_stmt,
[&] { return ctx.dst->CallStmt(ctx.dst->Call("foo")); });
ctx.Clone();
Program cloned(resolver::Resolve(cloned_b));
auto* expect = R"(
fn foo() {
}
fn f() {
var a = 1i;
loop {
if (!(true)) {
break;
}
{
}
continuing {
foo();
a += 1i;
}
}
}
)";
EXPECT_EQ(expect, str(cloned));
}
TEST_F(HoistToDeclBeforeTest, InsertBefore_ElseIf) {
// fn foo() {
// }
// fn f() {
// var a : bool;
// if (true) {
// } else if (a) {
// } else {
// }
// }
ProgramBuilder b;
b.Func("foo", tint::Empty, b.ty.void_(), tint::Empty);
auto* var = b.Decl(b.Var("a", b.ty.bool_()));
auto* elseif = b.If(b.Expr("a"), b.Block(), b.Else(b.Block()));
auto* s = b.If(b.Expr(true), b.Block(), //
b.Else(elseif));
b.Func("f", tint::Empty, b.ty.void_(), Vector{var, s});
Program original(resolver::Resolve(b));
ProgramBuilder cloned_b;
program::CloneContext ctx(&cloned_b, &original);
HoistToDeclBefore hoistToDeclBefore(ctx);
auto* before_stmt = ctx.src->Sem().Get(elseif);
auto* new_stmt = ctx.dst->CallStmt(ctx.dst->Call("foo"));
hoistToDeclBefore.InsertBefore(before_stmt, new_stmt);
ctx.Clone();
Program cloned(resolver::Resolve(cloned_b));
auto* expect = R"(
fn foo() {
}
fn f() {
var a : bool;
if (true) {
} else {
foo();
if (a) {
} else {
}
}
}
)";
EXPECT_EQ(expect, str(cloned));
}
TEST_F(HoistToDeclBeforeTest, InsertBefore_ElseIf_Function) {
// fn foo() {
// }
// fn f() {
// var a : bool;
// if (true) {
// } else if (a) {
// } else {
// }
// }
ProgramBuilder b;
b.Func("foo", tint::Empty, b.ty.void_(), tint::Empty);
auto* var = b.Decl(b.Var("a", b.ty.bool_()));
auto* elseif = b.If(b.Expr("a"), b.Block(), b.Else(b.Block()));
auto* s = b.If(b.Expr(true), b.Block(), //
b.Else(elseif));
b.Func("f", tint::Empty, b.ty.void_(), Vector{var, s});
Program original(resolver::Resolve(b));
ProgramBuilder cloned_b;
program::CloneContext ctx(&cloned_b, &original);
HoistToDeclBefore hoistToDeclBefore(ctx);
auto* before_stmt = ctx.src->Sem().Get(elseif);
hoistToDeclBefore.InsertBefore(before_stmt,
[&] { return ctx.dst->CallStmt(ctx.dst->Call("foo")); });
ctx.Clone();
Program cloned(resolver::Resolve(cloned_b));
auto* expect = R"(
fn foo() {
}
fn f() {
var a : bool;
if (true) {
} else {
foo();
if (a) {
} else {
}
}
}
)";
EXPECT_EQ(expect, str(cloned));
}
TEST_F(HoistToDeclBeforeTest, AbstractArray_ToLet) {
// fn f() {
// var a : array<f32, 1> = array(1);
// }
ProgramBuilder b;
auto* expr = b.Call(b.ty("array"), b.Expr(1_a));
auto* var = b.Decl(b.Var("a", b.ty.array(b.ty.f32(), 1_a), expr));
b.Func("f", tint::Empty, b.ty.void_(), Vector{var});
Program original(resolver::Resolve(b));
ProgramBuilder cloned_b;
program::CloneContext ctx(&cloned_b, &original);
HoistToDeclBefore hoistToDeclBefore(ctx);
auto* sem_expr = ctx.src->Sem().Get(expr);
hoistToDeclBefore.Add(sem_expr, expr, HoistToDeclBefore::VariableKind::kLet);
ctx.Clone();
Program cloned(resolver::Resolve(cloned_b));
auto* expect = R"(
fn f() {
let tint_symbol : array<f32, 1u> = array(1);
var a : array<f32, 1> = tint_symbol;
}
)";
EXPECT_EQ(expect, str(cloned));
}
TEST_F(HoistToDeclBeforeTest, AbstractArray_ToVar) {
// fn f() {
// var a : array<f32, 1> = array(1);
// }
ProgramBuilder b;
auto* expr = b.Call(b.ty("array"), b.Expr(1_a));
auto* var = b.Decl(b.Var("a", b.ty.array(b.ty.f32(), 1_a), expr));
b.Func("f", tint::Empty, b.ty.void_(), Vector{var});
Program original(resolver::Resolve(b));
ProgramBuilder cloned_b;
program::CloneContext ctx(&cloned_b, &original);
HoistToDeclBefore hoistToDeclBefore(ctx);
auto* sem_expr = ctx.src->Sem().Get(expr);
hoistToDeclBefore.Add(sem_expr, expr, HoistToDeclBefore::VariableKind::kVar);
ctx.Clone();
Program cloned(resolver::Resolve(cloned_b));
auto* expect = R"(
fn f() {
var tint_symbol : array<f32, 1u> = array(1);
var a : array<f32, 1> = tint_symbol;
}
)";
EXPECT_EQ(expect, str(cloned));
}
TEST_F(HoistToDeclBeforeTest, Replace_Block) {
// fn foo() {
// }
// fn f() {
// var a = 1i;
// }
ProgramBuilder b;
b.Func("foo", tint::Empty, b.ty.void_(), tint::Empty);
auto* var = b.Decl(b.Var("a", b.Expr(1_i)));
b.Func("f", tint::Empty, b.ty.void_(), Vector{var});
Program original(resolver::Resolve(b));
ProgramBuilder cloned_b;
program::CloneContext ctx(&cloned_b, &original);
HoistToDeclBefore hoistToDeclBefore(ctx);
auto* target_stmt = ctx.src->Sem().Get(var);
auto* new_stmt = ctx.dst->CallStmt(ctx.dst->Call("foo"));
hoistToDeclBefore.Replace(target_stmt, new_stmt);
ctx.Clone();
Program cloned(resolver::Resolve(cloned_b));
auto* expect = R"(
fn foo() {
}
fn f() {
foo();
}
)";
EXPECT_EQ(expect, str(cloned));
}
TEST_F(HoistToDeclBeforeTest, Replace_Block_Function) {
// fn foo() {
// }
// fn f() {
// var a = 1i;
// }
ProgramBuilder b;
b.Func("foo", tint::Empty, b.ty.void_(), tint::Empty);
auto* var = b.Decl(b.Var("a", b.Expr(1_i)));
b.Func("f", tint::Empty, b.ty.void_(), Vector{var});
Program original(resolver::Resolve(b));
ProgramBuilder cloned_b;
program::CloneContext ctx(&cloned_b, &original);
HoistToDeclBefore hoistToDeclBefore(ctx);
auto* target_stmt = ctx.src->Sem().Get(var);
hoistToDeclBefore.Replace(target_stmt, [&] { return ctx.dst->CallStmt(ctx.dst->Call("foo")); });
ctx.Clone();
Program cloned(resolver::Resolve(cloned_b));
auto* expect = R"(
fn foo() {
}
fn f() {
foo();
}
)";
EXPECT_EQ(expect, str(cloned));
}
TEST_F(HoistToDeclBeforeTest, Replace_ForLoopInit) {
// fn foo() {
// }
// fn f() {
// for(var a = 1i; true;) {
// }
// }
ProgramBuilder b;
b.Func("foo", tint::Empty, b.ty.void_(), tint::Empty);
auto* var = b.Decl(b.Var("a", b.Expr(1_i)));
auto* s = b.For(var, b.Expr(true), nullptr, b.Block());
b.Func("f", tint::Empty, b.ty.void_(), Vector{s});
Program original(resolver::Resolve(b));
ProgramBuilder cloned_b;
program::CloneContext ctx(&cloned_b, &original);
HoistToDeclBefore hoistToDeclBefore(ctx);
auto* target_stmt = ctx.src->Sem().Get(var);
auto* new_stmt = ctx.dst->CallStmt(ctx.dst->Call("foo"));
hoistToDeclBefore.Replace(target_stmt, new_stmt);
ctx.Clone();
Program cloned(resolver::Resolve(cloned_b));
auto* expect = R"(
fn foo() {
}
fn f() {
{
foo();
loop {
if (!(true)) {
break;
}
{
}
}
}
}
)";
EXPECT_EQ(expect, str(cloned));
}
TEST_F(HoistToDeclBeforeTest, Replace_ForLoopInit_Function) {
// fn foo() {
// }
// fn f() {
// for(var a = 1i; true;) {
// }
// }
ProgramBuilder b;
b.Func("foo", tint::Empty, b.ty.void_(), tint::Empty);
auto* var = b.Decl(b.Var("a", b.Expr(1_i)));
auto* s = b.For(var, b.Expr(true), nullptr, b.Block());
b.Func("f", tint::Empty, b.ty.void_(), Vector{s});
Program original(resolver::Resolve(b));
ProgramBuilder cloned_b;
program::CloneContext ctx(&cloned_b, &original);
HoistToDeclBefore hoistToDeclBefore(ctx);
auto* target_stmt = ctx.src->Sem().Get(var);
hoistToDeclBefore.Replace(target_stmt, [&] { return ctx.dst->CallStmt(ctx.dst->Call("foo")); });
ctx.Clone();
Program cloned(resolver::Resolve(cloned_b));
auto* expect = R"(
fn foo() {
}
fn f() {
{
foo();
loop {
if (!(true)) {
break;
}
{
}
}
}
}
)";
EXPECT_EQ(expect, str(cloned));
}
TEST_F(HoistToDeclBeforeTest, Replace_ForLoopCont) {
// fn foo() {
// }
// fn f() {
// var a = 1i;
// for(; true; a+=1i) {
// }
// }
ProgramBuilder b;
b.Func("foo", tint::Empty, b.ty.void_(), tint::Empty);
auto* var = b.Decl(b.Var("a", b.Expr(1_i)));
auto* cont = b.CompoundAssign("a", b.Expr(1_i), core::BinaryOp::kAdd);
auto* s = b.For(nullptr, b.Expr(true), cont, b.Block());
b.Func("f", tint::Empty, b.ty.void_(), Vector{var, s});
Program original(resolver::Resolve(b));
ProgramBuilder cloned_b;
program::CloneContext ctx(&cloned_b, &original);
HoistToDeclBefore hoistToDeclBefore(ctx);
auto* target_stmt = ctx.src->Sem().Get(cont->As<Statement>());
auto* new_stmt = ctx.dst->CallStmt(ctx.dst->Call("foo"));
hoistToDeclBefore.Replace(target_stmt, new_stmt);
ctx.Clone();
Program cloned(resolver::Resolve(cloned_b));
auto* expect = R"(
fn foo() {
}
fn f() {
var a = 1i;
loop {
if (!(true)) {
break;
}
{
}
continuing {
foo();
}
}
}
)";
EXPECT_EQ(expect, str(cloned));
}
TEST_F(HoistToDeclBeforeTest, Replace_ForLoopCont_Function) {
// fn foo() {
// }
// fn f() {
// var a = 1i;
// for(; true; a+=1i) {
// }
// }
ProgramBuilder b;
b.Func("foo", tint::Empty, b.ty.void_(), tint::Empty);
auto* var = b.Decl(b.Var("a", b.Expr(1_i)));
auto* cont = b.CompoundAssign("a", b.Expr(1_i), core::BinaryOp::kAdd);
auto* s = b.For(nullptr, b.Expr(true), cont, b.Block());
b.Func("f", tint::Empty, b.ty.void_(), Vector{var, s});
Program original(resolver::Resolve(b));
ProgramBuilder cloned_b;
program::CloneContext ctx(&cloned_b, &original);
HoistToDeclBefore hoistToDeclBefore(ctx);
auto* target_stmt = ctx.src->Sem().Get(cont->As<Statement>());
hoistToDeclBefore.Replace(target_stmt, [&] { return ctx.dst->CallStmt(ctx.dst->Call("foo")); });
ctx.Clone();
Program cloned(resolver::Resolve(cloned_b));
auto* expect = R"(
fn foo() {
}
fn f() {
var a = 1i;
loop {
if (!(true)) {
break;
}
{
}
continuing {
foo();
}
}
}
)";
EXPECT_EQ(expect, str(cloned));
}
} // namespace
} // namespace tint::ast::transform