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// Copyright 2021 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/lang/wgsl/resolver/resolver.h"
#include "gmock/gmock.h"
#include "src/tint/lang/wgsl/resolver/resolver_helper_test.h"
#include "src/tint/lang/wgsl/sem/block_statement.h"
#include "src/tint/lang/wgsl/sem/for_loop_statement.h"
#include "src/tint/lang/wgsl/sem/if_statement.h"
#include "src/tint/lang/wgsl/sem/loop_statement.h"
#include "src/tint/lang/wgsl/sem/switch_statement.h"
#include "src/tint/lang/wgsl/sem/while_statement.h"
using namespace tint::core::number_suffixes; // NOLINT
namespace tint::resolver {
namespace {
using ResolverCompoundStatementTest = ResolverTest;
TEST_F(ResolverCompoundStatementTest, FunctionBlock) {
// fn F() {
// var x : 32;
// }
auto* stmt = Decl(Var("x", ty.i32()));
auto* f = Func("F", tint::Empty, ty.void_(), Vector{stmt});
ASSERT_TRUE(r()->Resolve()) << r()->error();
auto* s = Sem().Get(stmt);
ASSERT_NE(s, nullptr);
ASSERT_NE(s->Block(), nullptr);
ASSERT_TRUE(s->Block()->Is<sem::FunctionBlockStatement>());
EXPECT_EQ(s->Block(), s->FindFirstParent<sem::BlockStatement>());
EXPECT_EQ(s->Block(), s->FindFirstParent<sem::FunctionBlockStatement>());
EXPECT_EQ(s->Function()->Declaration(), f);
EXPECT_EQ(s->Block()->Parent(), nullptr);
}
TEST_F(ResolverCompoundStatementTest, Block) {
// fn F() {
// {
// var x : 32;
// }
// }
auto* stmt = Decl(Var("x", ty.i32()));
auto* block = Block(stmt);
auto* f = Func("F", tint::Empty, ty.void_(), Vector{block});
ASSERT_TRUE(r()->Resolve()) << r()->error();
{
auto* s = Sem().Get(block);
ASSERT_NE(s, nullptr);
EXPECT_TRUE(s->Is<sem::BlockStatement>());
EXPECT_EQ(s, s->Block());
EXPECT_EQ(s->Parent(), s->FindFirstParent<sem::FunctionBlockStatement>());
}
{
auto* s = Sem().Get(stmt);
ASSERT_NE(s, nullptr);
ASSERT_NE(s->Block(), nullptr);
EXPECT_EQ(s->Block(), s->FindFirstParent<sem::BlockStatement>());
EXPECT_EQ(s->Block()->Parent(), s->FindFirstParent<sem::FunctionBlockStatement>());
ASSERT_TRUE(s->Block()->Parent()->Is<sem::FunctionBlockStatement>());
EXPECT_EQ(s->Function()->Declaration(), f);
EXPECT_EQ(s->Block()->Parent()->Parent(), nullptr);
}
}
TEST_F(ResolverCompoundStatementTest, Loop) {
// fn F() {
// loop {
// break;
// continuing {
// stmt;
// }
// }
// }
auto* brk = Break();
auto* stmt = Ignore(1_i);
auto* loop = Loop(Block(brk), Block(stmt));
auto* f = Func("F", tint::Empty, ty.void_(), Vector{loop});
ASSERT_TRUE(r()->Resolve()) << r()->error();
{
auto* s = Sem().Get(loop);
ASSERT_NE(s, nullptr);
EXPECT_TRUE(s->Is<sem::LoopStatement>());
EXPECT_EQ(s->Parent(), s->FindFirstParent<sem::FunctionBlockStatement>());
EXPECT_EQ(s->Parent(), s->Block());
}
{
auto* s = Sem().Get(brk);
ASSERT_NE(s, nullptr);
ASSERT_NE(s->Block(), nullptr);
EXPECT_EQ(s->Parent(), s->Block());
EXPECT_EQ(s->Parent(), s->FindFirstParent<sem::LoopBlockStatement>());
EXPECT_EQ(s->Parent()->Parent(), s->FindFirstParent<sem::LoopStatement>());
EXPECT_TRUE(Is<sem::LoopStatement>(s->Parent()->Parent()));
EXPECT_EQ(s->Parent()->Parent()->Parent(),
s->FindFirstParent<sem::FunctionBlockStatement>());
EXPECT_TRUE(Is<sem::FunctionBlockStatement>(s->Parent()->Parent()->Parent()));
EXPECT_EQ(s->Function()->Declaration(), f);
EXPECT_EQ(s->Parent()->Parent()->Parent()->Parent(), nullptr);
}
{
auto* s = Sem().Get(stmt);
ASSERT_NE(s, nullptr);
ASSERT_NE(s->Block(), nullptr);
EXPECT_EQ(s->Parent(), s->Block());
EXPECT_EQ(s->Parent(), s->FindFirstParent<sem::LoopContinuingBlockStatement>());
EXPECT_TRUE(Is<sem::LoopContinuingBlockStatement>(s->Parent()));
EXPECT_EQ(s->Parent()->Parent(), s->FindFirstParent<sem::LoopBlockStatement>());
EXPECT_TRUE(Is<sem::LoopBlockStatement>(s->Parent()->Parent()));
EXPECT_EQ(s->Parent()->Parent()->Parent(), s->FindFirstParent<sem::LoopStatement>());
EXPECT_TRUE(Is<sem::LoopStatement>(s->Parent()->Parent()->Parent()));
EXPECT_EQ(s->Parent()->Parent()->Parent()->Parent(),
s->FindFirstParent<sem::FunctionBlockStatement>());
EXPECT_TRUE(Is<sem::FunctionBlockStatement>(s->Parent()->Parent()->Parent()->Parent()));
EXPECT_EQ(s->Function()->Declaration(), f);
EXPECT_EQ(s->Parent()->Parent()->Parent()->Parent()->Parent(), nullptr);
}
}
TEST_F(ResolverCompoundStatementTest, Loop_EmptyContinuing) {
// fn F() {
// loop {
// break;
// continuing {
// }
// }
// }
auto* brk = Break();
auto* loop = Loop(Block(brk), Block());
Func("F", tint::Empty, ty.void_(), Vector{loop});
ASSERT_TRUE(r()->Resolve()) << r()->error();
{
auto* s = Sem().Get(loop);
ASSERT_NE(s, nullptr);
EXPECT_TRUE(s->Is<sem::LoopStatement>());
EXPECT_EQ(s->Parent(), s->FindFirstParent<sem::FunctionBlockStatement>());
EXPECT_EQ(s->Parent(), s->Block());
}
{
auto* s = Sem().Get(loop->continuing);
ASSERT_NE(s, nullptr);
EXPECT_TRUE(Is<sem::LoopContinuingBlockStatement>(s));
EXPECT_TRUE(Is<sem::LoopStatement>(s->Parent()->Parent()));
}
}
TEST_F(ResolverCompoundStatementTest, ForLoop) {
// fn F() {
// for (var i : u32; true; i = i + 1u) {
// return;
// }
// }
auto* init = Decl(Var("i", ty.u32()));
auto* cond = Expr(true);
auto* cont = Assign("i", Add("i", 1_u));
auto* stmt = Return();
auto* body = Block(stmt);
auto* for_ = For(init, cond, cont, body);
auto* f = Func("F", tint::Empty, ty.void_(), Vector{for_});
ASSERT_TRUE(r()->Resolve()) << r()->error();
{
auto* s = Sem().Get(for_);
ASSERT_NE(s, nullptr);
EXPECT_TRUE(s->Is<sem::ForLoopStatement>());
EXPECT_EQ(s->Parent(), s->FindFirstParent<sem::FunctionBlockStatement>());
EXPECT_EQ(s->Parent(), s->Block());
}
{
auto* s = Sem().Get(init);
ASSERT_NE(s, nullptr);
EXPECT_EQ(s->Parent(), s->FindFirstParent<sem::ForLoopStatement>());
EXPECT_TRUE(Is<sem::ForLoopStatement>(s->Parent()));
EXPECT_EQ(s->Block(), s->FindFirstParent<sem::FunctionBlockStatement>());
EXPECT_TRUE(Is<sem::FunctionBlockStatement>(s->Parent()->Parent()));
}
{ // Condition expression's statement is the for-loop itself
auto* e = Sem().Get(cond);
ASSERT_NE(e, nullptr);
auto* s = e->Stmt();
ASSERT_NE(s, nullptr);
ASSERT_TRUE(Is<sem::ForLoopStatement>(s));
ASSERT_NE(s->Parent(), nullptr);
EXPECT_EQ(s->Parent(), s->Block());
EXPECT_EQ(s->Parent(), s->FindFirstParent<sem::FunctionBlockStatement>());
EXPECT_TRUE(Is<sem::FunctionBlockStatement>(s->Block()));
}
{
auto* s = Sem().Get(cont);
ASSERT_NE(s, nullptr);
EXPECT_EQ(s->Parent(), s->FindFirstParent<sem::ForLoopStatement>());
EXPECT_TRUE(Is<sem::ForLoopStatement>(s->Parent()));
EXPECT_EQ(s->Block(), s->FindFirstParent<sem::FunctionBlockStatement>());
EXPECT_TRUE(Is<sem::FunctionBlockStatement>(s->Parent()->Parent()));
}
{
auto* s = Sem().Get(stmt);
ASSERT_NE(s, nullptr);
ASSERT_NE(s->Block(), nullptr);
EXPECT_EQ(s->Parent(), s->Block());
EXPECT_EQ(s->Block(), s->FindFirstParent<sem::LoopBlockStatement>());
EXPECT_TRUE(Is<sem::ForLoopStatement>(s->Parent()->Parent()));
EXPECT_EQ(s->Block()->Parent(), s->FindFirstParent<sem::ForLoopStatement>());
ASSERT_TRUE(Is<sem::FunctionBlockStatement>(s->Block()->Parent()->Parent()));
EXPECT_EQ(s->Block()->Parent()->Parent(),
s->FindFirstParent<sem::FunctionBlockStatement>());
EXPECT_EQ(s->Function()->Declaration(), f);
EXPECT_EQ(s->Block()->Parent()->Parent()->Parent(), nullptr);
}
}
TEST_F(ResolverCompoundStatementTest, While) {
// fn F() {
// while (true) {
// return;
// }
// }
auto* cond = Expr(true);
auto* stmt = Return();
auto* body = Block(stmt);
auto* while_ = While(cond, body);
auto* f = Func("W", tint::Empty, ty.void_(), Vector{while_});
ASSERT_TRUE(r()->Resolve()) << r()->error();
{
auto* s = Sem().Get(while_);
ASSERT_NE(s, nullptr);
EXPECT_EQ(Sem().Get(body)->Parent(), s);
EXPECT_TRUE(s->Is<sem::WhileStatement>());
EXPECT_EQ(s->Parent(), s->FindFirstParent<sem::FunctionBlockStatement>());
EXPECT_EQ(s->Parent(), s->Block());
}
{ // Condition expression's statement is the while itself
auto* e = Sem().Get(cond);
ASSERT_NE(e, nullptr);
auto* s = e->Stmt();
ASSERT_NE(s, nullptr);
ASSERT_TRUE(Is<sem::WhileStatement>(s));
ASSERT_NE(s->Parent(), nullptr);
EXPECT_EQ(s->Parent(), s->Block());
EXPECT_EQ(s->Parent(), s->FindFirstParent<sem::FunctionBlockStatement>());
EXPECT_TRUE(Is<sem::FunctionBlockStatement>(s->Block()));
}
{
auto* s = Sem().Get(stmt);
ASSERT_NE(s, nullptr);
ASSERT_NE(s->Block(), nullptr);
EXPECT_EQ(s->Parent(), s->Block());
EXPECT_EQ(s->Block(), s->FindFirstParent<sem::LoopBlockStatement>());
EXPECT_TRUE(Is<sem::WhileStatement>(s->Parent()->Parent()));
EXPECT_EQ(s->Block()->Parent(), s->FindFirstParent<sem::WhileStatement>());
ASSERT_TRUE(Is<sem::FunctionBlockStatement>(s->Block()->Parent()->Parent()));
EXPECT_EQ(s->Block()->Parent()->Parent(),
s->FindFirstParent<sem::FunctionBlockStatement>());
EXPECT_EQ(s->Function()->Declaration(), f);
EXPECT_EQ(s->Block()->Parent()->Parent()->Parent(), nullptr);
}
}
TEST_F(ResolverCompoundStatementTest, If) {
// fn F() {
// if (cond_a) {
// stat_a;
// } else if (cond_b) {
// stat_b;
// } else {
// stat_c;
// }
// }
auto* cond_a = Expr(true);
auto* stmt_a = Ignore(1_i);
auto* cond_b = Expr(true);
auto* stmt_b = Ignore(1_i);
auto* stmt_c = Ignore(1_i);
auto* if_stmt = If(cond_a, Block(stmt_a), Else(If(cond_b, Block(stmt_b), Else(Block(stmt_c)))));
WrapInFunction(if_stmt);
ASSERT_TRUE(r()->Resolve()) << r()->error();
{
auto* s = Sem().Get(if_stmt);
ASSERT_NE(s, nullptr);
EXPECT_TRUE(s->Is<sem::IfStatement>());
EXPECT_EQ(s->Parent(), s->FindFirstParent<sem::FunctionBlockStatement>());
EXPECT_EQ(s->Parent(), s->Block());
}
{
auto* e = Sem().Get(cond_a);
ASSERT_NE(e, nullptr);
auto* s = e->Stmt();
ASSERT_NE(s, nullptr);
EXPECT_TRUE(s->Is<sem::IfStatement>());
EXPECT_EQ(s->Parent(), s->FindFirstParent<sem::FunctionBlockStatement>());
EXPECT_EQ(s->Parent(), s->Block());
}
{
auto* s = Sem().Get(stmt_a);
ASSERT_NE(s, nullptr);
EXPECT_EQ(s->Parent(), s->FindFirstParent<sem::BlockStatement>());
EXPECT_EQ(s->Parent(), s->Block());
EXPECT_EQ(s->Parent()->Parent(), s->FindFirstParent<sem::IfStatement>());
EXPECT_EQ(s->Parent()->Parent()->Parent(),
s->FindFirstParent<sem::FunctionBlockStatement>());
}
{
auto* e = Sem().Get(cond_b);
ASSERT_NE(e, nullptr);
auto* s = e->Stmt();
ASSERT_NE(s, nullptr);
EXPECT_TRUE(s->Is<sem::IfStatement>());
EXPECT_EQ(s->Parent(), s->Parent()->FindFirstParent<sem::IfStatement>());
EXPECT_EQ(s->Parent()->Parent(), s->FindFirstParent<sem::FunctionBlockStatement>());
EXPECT_EQ(s->Parent()->Parent(), s->Block());
}
{
auto* s = Sem().Get(stmt_b);
ASSERT_NE(s, nullptr);
EXPECT_EQ(s->Parent(), s->FindFirstParent<sem::BlockStatement>());
EXPECT_EQ(s->Parent(), s->Block());
auto* elseif = s->FindFirstParent<sem::IfStatement>();
EXPECT_EQ(s->Parent()->Parent(), elseif);
EXPECT_EQ(s->Parent()->Parent()->Parent(),
elseif->Parent()->FindFirstParent<sem::IfStatement>());
EXPECT_EQ(s->Parent()->Parent()->Parent()->Parent(),
s->FindFirstParent<sem::FunctionBlockStatement>());
}
{
auto* s = Sem().Get(stmt_c);
ASSERT_NE(s, nullptr);
EXPECT_EQ(s->Parent(), s->FindFirstParent<sem::BlockStatement>());
EXPECT_EQ(s->Parent(), s->Block());
auto* elseif = s->FindFirstParent<sem::IfStatement>();
EXPECT_EQ(s->Parent()->Parent(), elseif);
EXPECT_EQ(s->Parent()->Parent()->Parent(),
elseif->Parent()->FindFirstParent<sem::IfStatement>());
EXPECT_EQ(s->Parent()->Parent()->Parent()->Parent(),
s->FindFirstParent<sem::FunctionBlockStatement>());
}
}
TEST_F(ResolverCompoundStatementTest, Switch) {
// fn F() {
// switch (expr) {
// case 1i: {
// stmt_a;
// }
// case 2i: {
// stmt_b;
// }
// default: {
// stmt_c;
// }
// }
// }
auto* expr = Expr(5_i);
auto* stmt_a = Ignore(1_i);
auto* stmt_b = Ignore(1_i);
auto* stmt_c = Ignore(1_i);
auto* swi = Switch(expr, Case(CaseSelector(1_i), Block(stmt_a)),
Case(CaseSelector(2_i), Block(stmt_b)), DefaultCase(Block(stmt_c)));
WrapInFunction(swi);
ASSERT_TRUE(r()->Resolve()) << r()->error();
{
auto* s = Sem().Get(swi);
ASSERT_NE(s, nullptr);
EXPECT_TRUE(s->Is<sem::SwitchStatement>());
EXPECT_EQ(s->Parent(), s->FindFirstParent<sem::FunctionBlockStatement>());
EXPECT_EQ(s->Parent(), s->Block());
}
{
auto* e = Sem().Get(expr);
ASSERT_NE(e, nullptr);
auto* s = e->Stmt();
ASSERT_NE(s, nullptr);
EXPECT_TRUE(s->Is<sem::SwitchStatement>());
EXPECT_EQ(s->Parent(), s->FindFirstParent<sem::FunctionBlockStatement>());
EXPECT_EQ(s->Parent(), s->Block());
}
{
auto* s = Sem().Get(stmt_a);
ASSERT_NE(s, nullptr);
EXPECT_EQ(s->Parent(), s->FindFirstParent<sem::BlockStatement>());
EXPECT_EQ(s->Parent(), s->Block());
EXPECT_EQ(s->Parent()->Parent(), s->FindFirstParent<sem::CaseStatement>());
EXPECT_EQ(s->Parent()->Parent()->Parent(), s->FindFirstParent<sem::SwitchStatement>());
EXPECT_EQ(s->Parent()->Parent()->Parent()->Parent(),
s->FindFirstParent<sem::FunctionBlockStatement>());
}
{
auto* s = Sem().Get(stmt_b);
ASSERT_NE(s, nullptr);
EXPECT_EQ(s->Parent(), s->FindFirstParent<sem::BlockStatement>());
EXPECT_EQ(s->Parent(), s->Block());
EXPECT_EQ(s->Parent()->Parent(), s->FindFirstParent<sem::CaseStatement>());
EXPECT_EQ(s->Parent()->Parent()->Parent(), s->FindFirstParent<sem::SwitchStatement>());
EXPECT_EQ(s->Parent()->Parent()->Parent()->Parent(),
s->FindFirstParent<sem::FunctionBlockStatement>());
}
{
auto* s = Sem().Get(stmt_c);
ASSERT_NE(s, nullptr);
EXPECT_EQ(s->Parent(), s->FindFirstParent<sem::BlockStatement>());
EXPECT_EQ(s->Parent(), s->Block());
EXPECT_EQ(s->Parent()->Parent(), s->FindFirstParent<sem::CaseStatement>());
EXPECT_EQ(s->Parent()->Parent()->Parent(), s->FindFirstParent<sem::SwitchStatement>());
EXPECT_EQ(s->Parent()->Parent()->Parent()->Parent(),
s->FindFirstParent<sem::FunctionBlockStatement>());
}
}
} // namespace
} // namespace tint::resolver