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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/resolver/resolver.h"
#include "gmock/gmock.h"
#include "gtest/gtest-spi.h"
#include "src/tint/ast/assignment_statement.h"
#include "src/tint/ast/bitcast_expression.h"
#include "src/tint/ast/break_statement.h"
#include "src/tint/ast/builtin_texture_helper_test.h"
#include "src/tint/ast/call_statement.h"
#include "src/tint/ast/continue_statement.h"
#include "src/tint/ast/discard_statement.h"
#include "src/tint/ast/if_statement.h"
#include "src/tint/ast/loop_statement.h"
#include "src/tint/ast/return_statement.h"
#include "src/tint/ast/stage_attribute.h"
#include "src/tint/ast/switch_statement.h"
#include "src/tint/ast/unary_op_expression.h"
#include "src/tint/ast/variable_decl_statement.h"
#include "src/tint/resolver/resolver_test_helper.h"
#include "src/tint/sem/call.h"
#include "src/tint/sem/function.h"
#include "src/tint/sem/member_accessor_expression.h"
#include "src/tint/sem/sampled_texture_type.h"
#include "src/tint/sem/statement.h"
#include "src/tint/sem/variable.h"
using ::testing::ElementsAre;
using ::testing::HasSubstr;
namespace tint::resolver {
namespace {
using ResolverValidationTest = ResolverTest;
class FakeStmt final : public Castable<FakeStmt, ast::Statement> {
public:
FakeStmt(ProgramID pid, Source src) : Base(pid, src) {}
FakeStmt* Clone(CloneContext*) const override { return nullptr; }
};
class FakeExpr final : public Castable<FakeExpr, ast::Expression> {
public:
FakeExpr(ProgramID pid, Source src) : Base(pid, src) {}
FakeExpr* Clone(CloneContext*) const override { return nullptr; }
};
TEST_F(ResolverValidationTest, WorkgroupMemoryUsedInVertexStage) {
Global(Source{{1, 2}}, "wg", ty.vec4<f32>(), ast::StorageClass::kWorkgroup);
Global("dst", ty.vec4<f32>(), ast::StorageClass::kPrivate);
auto* stmt = Assign(Expr("dst"), Expr(Source{{3, 4}}, "wg"));
Func(Source{{9, 10}}, "f0", ast::VariableList{}, ty.vec4<f32>(),
{stmt, Return(Expr("dst"))},
ast::AttributeList{Stage(ast::PipelineStage::kVertex)},
ast::AttributeList{Builtin(ast::Builtin::kPosition)});
EXPECT_FALSE(r()->Resolve());
EXPECT_EQ(r()->error(),
"3:4 error: workgroup memory cannot be used by vertex pipeline "
"stage\n1:2 note: variable is declared here");
}
TEST_F(ResolverValidationTest, WorkgroupMemoryUsedInFragmentStage) {
// var<workgroup> wg : vec4<f32>;
// var<workgroup> dst : vec4<f32>;
// fn f2(){ dst = wg; }
// fn f1() { f2(); }
// @stage(fragment)
// fn f0() {
// f1();
//}
Global(Source{{1, 2}}, "wg", ty.vec4<f32>(), ast::StorageClass::kWorkgroup);
Global("dst", ty.vec4<f32>(), ast::StorageClass::kPrivate);
auto* stmt = Assign(Expr("dst"), Expr(Source{{3, 4}}, "wg"));
Func(Source{{5, 6}}, "f2", {}, ty.void_(), {stmt});
Func(Source{{7, 8}}, "f1", {}, ty.void_(), {CallStmt(Call("f2"))});
Func(Source{{9, 10}}, "f0", {}, ty.void_(), {CallStmt(Call("f1"))},
ast::AttributeList{Stage(ast::PipelineStage::kFragment)});
EXPECT_FALSE(r()->Resolve());
EXPECT_EQ(
r()->error(),
R"(3:4 error: workgroup memory cannot be used by fragment pipeline stage
1:2 note: variable is declared here
5:6 note: called by function 'f2'
7:8 note: called by function 'f1'
9:10 note: called by entry point 'f0')");
}
TEST_F(ResolverValidationTest, UnhandledStmt) {
EXPECT_FATAL_FAILURE(
{
ProgramBuilder b;
b.WrapInFunction(b.create<FakeStmt>());
Program(std::move(b));
},
"internal compiler error: unhandled node type: tint::resolver::FakeStmt");
}
TEST_F(ResolverValidationTest, Stmt_If_NonBool) {
// if (1.23f) {}
WrapInFunction(If(Expr(Source{{12, 34}}, 1.23f), Block()));
EXPECT_FALSE(r()->Resolve());
EXPECT_EQ(r()->error(),
"12:34 error: if statement condition must be bool, got f32");
}
TEST_F(ResolverValidationTest, Stmt_Else_NonBool) {
// else (1.23f) {}
WrapInFunction(
If(Expr(true), Block(), Else(Expr(Source{{12, 34}}, 1.23f), Block())));
EXPECT_FALSE(r()->Resolve());
EXPECT_EQ(r()->error(),
"12:34 error: else statement condition must be bool, got f32");
}
TEST_F(ResolverValidationTest, Expr_ErrUnknownExprType) {
EXPECT_FATAL_FAILURE(
{
ProgramBuilder b;
b.WrapInFunction(b.create<FakeExpr>());
Resolver(&b).Resolve();
},
"internal compiler error: unhandled expression type: "
"tint::resolver::FakeExpr");
}
TEST_F(ResolverValidationTest, Expr_DontCall_Function) {
Func("func", {}, ty.void_(), {}, {});
WrapInFunction(Expr(Source{{{3, 3}, {3, 8}}}, "func"));
EXPECT_FALSE(r()->Resolve());
EXPECT_EQ(r()->error(), "3:8 error: missing '(' for function call");
}
TEST_F(ResolverValidationTest, Expr_DontCall_Builtin) {
WrapInFunction(Expr(Source{{{3, 3}, {3, 8}}}, "round"));
EXPECT_FALSE(r()->Resolve());
EXPECT_EQ(r()->error(), "3:8 error: missing '(' for builtin call");
}
TEST_F(ResolverValidationTest, Expr_DontCall_Type) {
Alias("T", ty.u32());
WrapInFunction(Expr(Source{{{3, 3}, {3, 8}}}, "T"));
EXPECT_FALSE(r()->Resolve());
EXPECT_EQ(r()->error(),
"3:8 error: missing '(' for type constructor or cast");
}
TEST_F(ResolverValidationTest, AssignmentStmt_InvalidLHS_BuiltinFunctionName) {
// normalize = 2;
auto* lhs = Expr(Source{{12, 34}}, "normalize");
auto* rhs = Expr(2);
auto* assign = Assign(lhs, rhs);
WrapInFunction(assign);
EXPECT_FALSE(r()->Resolve());
EXPECT_EQ(r()->error(), "12:34 error: missing '(' for builtin call");
}
TEST_F(ResolverValidationTest, UsingUndefinedVariable_Fail) {
// b = 2;
auto* lhs = Expr(Source{{12, 34}}, "b");
auto* rhs = Expr(2);
auto* assign = Assign(lhs, rhs);
WrapInFunction(assign);
EXPECT_FALSE(r()->Resolve());
EXPECT_EQ(r()->error(), "12:34 error: unknown identifier: 'b'");
}
TEST_F(ResolverValidationTest, UsingUndefinedVariableInBlockStatement_Fail) {
// {
// b = 2;
// }
auto* lhs = Expr(Source{{12, 34}}, "b");
auto* rhs = Expr(2);
auto* body = Block(Assign(lhs, rhs));
WrapInFunction(body);
EXPECT_FALSE(r()->Resolve());
EXPECT_EQ(r()->error(), "12:34 error: unknown identifier: 'b'");
}
TEST_F(ResolverValidationTest, UsingUndefinedVariableGlobalVariable_Pass) {
// var global_var: f32 = 2.1;
// fn my_func() {
// global_var = 3.14;
// return;
// }
Global("global_var", ty.f32(), ast::StorageClass::kPrivate, Expr(2.1f));
Func("my_func", ast::VariableList{}, ty.void_(),
{
Assign(Expr(Source{{12, 34}}, "global_var"), 3.14f),
Return(),
});
EXPECT_TRUE(r()->Resolve()) << r()->error();
}
TEST_F(ResolverValidationTest, UsingUndefinedVariableInnerScope_Fail) {
// {
// if (true) { var a : f32 = 2.0; }
// a = 3.14;
// }
auto* var = Var("a", ty.f32(), ast::StorageClass::kNone, Expr(2.0f));
auto* cond = Expr(true);
auto* body = Block(Decl(var));
SetSource(Source{{12, 34}});
auto* lhs = Expr(Source{{12, 34}}, "a");
auto* rhs = Expr(3.14f);
auto* outer_body =
Block(create<ast::IfStatement>(cond, body, ast::ElseStatementList{}),
Assign(lhs, rhs));
WrapInFunction(outer_body);
EXPECT_FALSE(r()->Resolve());
EXPECT_EQ(r()->error(), "12:34 error: unknown identifier: 'a'");
}
TEST_F(ResolverValidationTest, UsingUndefinedVariableOuterScope_Pass) {
// {
// var a : f32 = 2.0;
// if (true) { a = 3.14; }
// }
auto* var = Var("a", ty.f32(), ast::StorageClass::kNone, Expr(2.0f));
auto* lhs = Expr(Source{{12, 34}}, "a");
auto* rhs = Expr(3.14f);
auto* cond = Expr(true);
auto* body = Block(Assign(lhs, rhs));
auto* outer_body =
Block(Decl(var),
create<ast::IfStatement>(cond, body, ast::ElseStatementList{}));
WrapInFunction(outer_body);
EXPECT_TRUE(r()->Resolve()) << r()->error();
}
TEST_F(ResolverValidationTest, UsingUndefinedVariableDifferentScope_Fail) {
// {
// { var a : f32 = 2.0; }
// { a = 3.14; }
// }
auto* var = Var("a", ty.f32(), ast::StorageClass::kNone, Expr(2.0f));
auto* first_body = Block(Decl(var));
auto* lhs = Expr(Source{{12, 34}}, "a");
auto* rhs = Expr(3.14f);
auto* second_body = Block(Assign(lhs, rhs));
auto* outer_body = Block(first_body, second_body);
WrapInFunction(outer_body);
EXPECT_FALSE(r()->Resolve());
EXPECT_EQ(r()->error(), "12:34 error: unknown identifier: 'a'");
}
TEST_F(ResolverValidationTest, StorageClass_FunctionVariableWorkgroupClass) {
auto* var = Var("var", ty.i32(), ast::StorageClass::kWorkgroup);
auto* stmt = Decl(var);
Func("func", ast::VariableList{}, ty.void_(), {stmt}, ast::AttributeList{});
EXPECT_FALSE(r()->Resolve());
EXPECT_EQ(r()->error(),
"error: function variable has a non-function storage class");
}
TEST_F(ResolverValidationTest, StorageClass_FunctionVariableI32) {
auto* var = Var("s", ty.i32(), ast::StorageClass::kPrivate);
auto* stmt = Decl(var);
Func("func", ast::VariableList{}, ty.void_(), {stmt}, ast::AttributeList{});
EXPECT_FALSE(r()->Resolve());
EXPECT_EQ(r()->error(),
"error: function variable has a non-function storage class");
}
TEST_F(ResolverValidationTest, StorageClass_SamplerExplicitStorageClass) {
auto* t = ty.sampler(ast::SamplerKind::kSampler);
Global(Source{{12, 34}}, "var", t, ast::StorageClass::kUniformConstant,
ast::AttributeList{
create<ast::BindingAttribute>(0),
create<ast::GroupAttribute>(0),
});
EXPECT_FALSE(r()->Resolve());
EXPECT_EQ(
r()->error(),
R"(12:34 error: variables of type 'sampler' must not have a storage class)");
}
TEST_F(ResolverValidationTest, StorageClass_TextureExplicitStorageClass) {
auto* t = ty.sampled_texture(ast::TextureDimension::k1d, ty.f32());
Global(Source{{12, 34}}, "var", t, ast::StorageClass::kUniformConstant,
ast::AttributeList{
create<ast::BindingAttribute>(0),
create<ast::GroupAttribute>(0),
});
EXPECT_FALSE(r()->Resolve()) << r()->error();
EXPECT_EQ(
r()->error(),
R"(12:34 error: variables of type 'texture_1d<f32>' must not have a storage class)");
}
TEST_F(ResolverValidationTest, Expr_MemberAccessor_VectorSwizzle_BadChar) {
Global("my_vec", ty.vec3<f32>(), ast::StorageClass::kPrivate);
auto* ident = Expr(Source{{{3, 3}, {3, 7}}}, "xyqz");
auto* mem = MemberAccessor("my_vec", ident);
WrapInFunction(mem);
EXPECT_FALSE(r()->Resolve());
EXPECT_EQ(r()->error(), "3:5 error: invalid vector swizzle character");
}
TEST_F(ResolverValidationTest, Expr_MemberAccessor_VectorSwizzle_MixedChars) {
Global("my_vec", ty.vec4<f32>(), ast::StorageClass::kPrivate);
auto* ident = Expr(Source{{{3, 3}, {3, 7}}}, "rgyw");
auto* mem = MemberAccessor("my_vec", ident);
WrapInFunction(mem);
EXPECT_FALSE(r()->Resolve());
EXPECT_EQ(
r()->error(),
"3:3 error: invalid mixing of vector swizzle characters rgba with xyzw");
}
TEST_F(ResolverValidationTest, Expr_MemberAccessor_VectorSwizzle_BadLength) {
Global("my_vec", ty.vec3<f32>(), ast::StorageClass::kPrivate);
auto* ident = Expr(Source{{{3, 3}, {3, 8}}}, "zzzzz");
auto* mem = MemberAccessor("my_vec", ident);
WrapInFunction(mem);
EXPECT_FALSE(r()->Resolve());
EXPECT_EQ(r()->error(), "3:3 error: invalid vector swizzle size");
}
TEST_F(ResolverValidationTest, Expr_MemberAccessor_VectorSwizzle_BadIndex) {
Global("my_vec", ty.vec2<f32>(), ast::StorageClass::kPrivate);
auto* ident = Expr(Source{{3, 3}}, "z");
auto* mem = MemberAccessor("my_vec", ident);
WrapInFunction(mem);
EXPECT_FALSE(r()->Resolve());
EXPECT_EQ(r()->error(), "3:3 error: invalid vector swizzle member");
}
TEST_F(ResolverValidationTest, Expr_MemberAccessor_BadParent) {
// var param: vec4<f32>
// let ret: f32 = *(&param).x;
auto* param = Var("param", ty.vec4<f32>());
auto* x = Expr(Source{{{3, 3}, {3, 8}}}, "x");
auto* addressOf_expr = AddressOf(Source{{12, 34}}, param);
auto* accessor_expr = MemberAccessor(addressOf_expr, x);
auto* star_p = Deref(accessor_expr);
auto* ret = Var("r", ty.f32(), star_p);
WrapInFunction(Decl(param), Decl(ret));
EXPECT_FALSE(r()->Resolve());
EXPECT_EQ(r()->error(),
"12:34 error: invalid member accessor expression. Expected vector "
"or struct, got 'ptr<function, vec4<f32>, read_write>'");
}
TEST_F(ResolverValidationTest, EXpr_MemberAccessor_FuncGoodParent) {
// fn func(p: ptr<function, vec4<f32>>) -> f32 {
// let x: f32 = (*p).z;
// return x;
// }
auto* p =
Param("p", ty.pointer(ty.vec4<f32>(), ast::StorageClass::kFunction));
auto* star_p = Deref(p);
auto* z = Expr(Source{{{3, 3}, {3, 8}}}, "z");
auto* accessor_expr = MemberAccessor(star_p, z);
auto* x = Var("x", ty.f32(), accessor_expr);
Func("func", {p}, ty.f32(), {Decl(x), Return(x)});
EXPECT_TRUE(r()->Resolve()) << r()->error();
}
TEST_F(ResolverValidationTest, EXpr_MemberAccessor_FuncBadParent) {
// fn func(p: ptr<function, vec4<f32>>) -> f32 {
// let x: f32 = *p.z;
// return x;
// }
auto* p =
Param("p", ty.pointer(ty.vec4<f32>(), ast::StorageClass::kFunction));
auto* z = Expr(Source{{{3, 3}, {3, 8}}}, "z");
auto* accessor_expr = MemberAccessor(p, z);
auto* star_p = Deref(accessor_expr);
auto* x = Var("x", ty.f32(), star_p);
Func("func", {p}, ty.f32(), {Decl(x), Return(x)});
EXPECT_FALSE(r()->Resolve());
EXPECT_EQ(
r()->error(),
"error: invalid member accessor expression. "
"Expected vector or struct, got 'ptr<function, vec4<f32>, read_write>'");
}
TEST_F(ResolverValidationTest,
Stmt_Loop_ContinueInLoopBodyBeforeDeclAndAfterDecl_UsageInContinuing) {
// loop {
// continue; // Bypasses z decl
// var z : i32; // unreachable
//
// continuing {
// z = 2;
// }
// }
auto error_loc = Source{{12, 34}};
auto* body =
Block(Continue(),
Decl(error_loc, Var("z", ty.i32(), ast::StorageClass::kNone)));
auto* continuing = Block(Assign(Expr("z"), 2));
auto* loop_stmt = Loop(body, continuing);
WrapInFunction(loop_stmt);
EXPECT_FALSE(r()->Resolve());
EXPECT_EQ(r()->error(),
R"(12:34 warning: code is unreachable
error: continue statement bypasses declaration of 'z'
note: identifier 'z' declared here
note: identifier 'z' referenced in continuing block here)");
}
TEST_F(ResolverValidationTest,
Stmt_Loop_ContinueInLoopBodyAfterDecl_UsageInContinuing_InBlocks) {
// loop {
// if (false) { break; }
// var z : i32;
// {{{continue;}}}
// continue; // Ok
//
// continuing {
// z = 2;
// }
// }
auto* body = Block(If(false, Block(Break())), //
Decl(Var("z", ty.i32(), ast::StorageClass::kNone)),
Block(Block(Block(Continue()))));
auto* continuing = Block(Assign(Expr("z"), 2));
auto* loop_stmt = Loop(body, continuing);
WrapInFunction(loop_stmt);
ASSERT_TRUE(r()->Resolve()) << r()->error();
}
TEST_F(ResolverValidationTest,
Stmt_Loop_ContinueInLoopBodySubscopeBeforeDecl_UsageInContinuing) {
// loop {
// if (true) {
// continue; // Still bypasses z decl (if we reach here)
// }
// var z : i32;
// continuing {
// z = 2;
// }
// }
auto cont_loc = Source{{12, 34}};
auto decl_loc = Source{{56, 78}};
auto ref_loc = Source{{90, 12}};
auto* body =
Block(If(Expr(true), Block(Continue(cont_loc))),
Decl(Var(decl_loc, "z", ty.i32(), ast::StorageClass::kNone)));
auto* continuing = Block(Assign(Expr(ref_loc, "z"), 2));
auto* loop_stmt = Loop(body, continuing);
WrapInFunction(loop_stmt);
EXPECT_FALSE(r()->Resolve()) << r()->error();
EXPECT_EQ(r()->error(),
R"(12:34 error: continue statement bypasses declaration of 'z'
56:78 note: identifier 'z' declared here
90:12 note: identifier 'z' referenced in continuing block here)");
}
TEST_F(
ResolverValidationTest,
Stmt_Loop_ContinueInLoopBodySubscopeBeforeDecl_UsageInContinuingSubscope) {
// loop {
// if (true) {
// continue; // Still bypasses z decl (if we reach here)
// }
// var z : i32;
// continuing {
// if (true) {
// z = 2; // Must fail even if z is in a sub-scope
// }
// }
// }
auto cont_loc = Source{{12, 34}};
auto decl_loc = Source{{56, 78}};
auto ref_loc = Source{{90, 12}};
auto* body =
Block(If(Expr(true), Block(Continue(cont_loc))),
Decl(Var(decl_loc, "z", ty.i32(), ast::StorageClass::kNone)));
auto* continuing =
Block(If(Expr(true), Block(Assign(Expr(ref_loc, "z"), 2))));
auto* loop_stmt = Loop(body, continuing);
WrapInFunction(loop_stmt);
EXPECT_FALSE(r()->Resolve()) << r()->error();
EXPECT_EQ(r()->error(),
R"(12:34 error: continue statement bypasses declaration of 'z'
56:78 note: identifier 'z' declared here
90:12 note: identifier 'z' referenced in continuing block here)");
}
TEST_F(ResolverValidationTest,
Stmt_Loop_ContinueInLoopBodySubscopeBeforeDecl_UsageOutsideBlock) {
// loop {
// if (true) {
// continue; // bypasses z decl (if we reach here)
// }
// var z : i32;
// continuing {
// // Must fail even if z is used in an expression that isn't
// // directly contained inside a block.
// if (z < 2) {
// }
// }
// }
auto cont_loc = Source{{12, 34}};
auto decl_loc = Source{{56, 78}};
auto ref_loc = Source{{90, 12}};
auto* body =
Block(If(Expr(true), Block(Continue(cont_loc))),
Decl(Var(decl_loc, "z", ty.i32(), ast::StorageClass::kNone)));
auto* compare = create<ast::BinaryExpression>(ast::BinaryOp::kLessThan,
Expr(ref_loc, "z"), Expr(2));
auto* continuing = Block(If(compare, Block()));
auto* loop_stmt = Loop(body, continuing);
WrapInFunction(loop_stmt);
EXPECT_FALSE(r()->Resolve()) << r()->error();
EXPECT_EQ(r()->error(),
R"(12:34 error: continue statement bypasses declaration of 'z'
56:78 note: identifier 'z' declared here
90:12 note: identifier 'z' referenced in continuing block here)");
}
TEST_F(ResolverValidationTest,
Stmt_Loop_ContinueInLoopBodySubscopeBeforeDecl_UsageInContinuingLoop) {
// loop {
// if (true) {
// continue; // Still bypasses z decl (if we reach here)
// }
// var z : i32;
// continuing {
// loop {
// z = 2; // Must fail even if z is in a sub-scope
// }
// }
// }
auto cont_loc = Source{{12, 34}};
auto decl_loc = Source{{56, 78}};
auto ref_loc = Source{{90, 12}};
auto* body =
Block(If(Expr(true), Block(Continue(cont_loc))),
Decl(Var(decl_loc, "z", ty.i32(), ast::StorageClass::kNone)));
auto* continuing = Block(Loop(Block(Assign(Expr(ref_loc, "z"), 2))));
auto* loop_stmt = Loop(body, continuing);
WrapInFunction(loop_stmt);
EXPECT_FALSE(r()->Resolve()) << r()->error();
EXPECT_EQ(r()->error(),
R"(12:34 error: continue statement bypasses declaration of 'z'
56:78 note: identifier 'z' declared here
90:12 note: identifier 'z' referenced in continuing block here)");
}
TEST_F(ResolverValidationTest,
Stmt_Loop_ContinueInNestedLoopBodyBeforeDecl_UsageInContinuing) {
// loop {
// loop {
// if (true) { continue; } // OK: not part of the outer loop
// break;
// }
// var z : i32;
// break;
// continuing {
// z = 2;
// }
// }
auto* inner_loop = Loop(Block( //
If(true, Block(Continue())), //
Break()));
auto* body = Block(inner_loop, //
Decl(Var("z", ty.i32(), ast::StorageClass::kNone)), //
Break());
auto* continuing = Block(Assign("z", 2));
auto* loop_stmt = Loop(body, continuing);
WrapInFunction(loop_stmt);
EXPECT_TRUE(r()->Resolve()) << r()->error();
}
TEST_F(ResolverValidationTest,
Stmt_Loop_ContinueInNestedLoopBodyBeforeDecl_UsageInContinuingSubscope) {
// loop {
// loop {
// if (true) { continue; } // OK: not part of the outer loop
// break;
// }
// var z : i32;
// break;
// continuing {
// if (true) {
// z = 2;
// }
// }
// }
auto* inner_loop = Loop(Block(If(true, Block(Continue())), //
Break()));
auto* body = Block(inner_loop, //
Decl(Var("z", ty.i32(), ast::StorageClass::kNone)), //
Break());
auto* continuing = Block(If(Expr(true), Block(Assign("z", 2))));
auto* loop_stmt = Loop(body, continuing);
WrapInFunction(loop_stmt);
EXPECT_TRUE(r()->Resolve()) << r()->error();
}
TEST_F(ResolverValidationTest,
Stmt_Loop_ContinueInNestedLoopBodyBeforeDecl_UsageInContinuingLoop) {
// loop {
// loop {
// if (true) { continue; } // OK: not part of the outer loop
// break;
// }
// var z : i32;
// break;
// continuing {
// loop {
// z = 2;
// break;
// }
// }
// }
auto* inner_loop = Loop(Block(If(true, Block(Continue())), //
Break()));
auto* body = Block(inner_loop, //
Decl(Var("z", ty.i32(), ast::StorageClass::kNone)), //
Break());
auto* continuing = Block(Loop(Block(Assign("z", 2), //
Break())));
auto* loop_stmt = Loop(body, continuing);
WrapInFunction(loop_stmt);
EXPECT_TRUE(r()->Resolve()) << r()->error();
}
TEST_F(ResolverTest, Stmt_Loop_ContinueInLoopBodyAfterDecl_UsageInContinuing) {
// loop {
// var z : i32;
// if (true) { continue; }
// break;
// continuing {
// z = 2;
// }
// }
auto error_loc = Source{{12, 34}};
auto* body = Block(Decl(Var("z", ty.i32(), ast::StorageClass::kNone)),
If(true, Block(Continue())), //
Break());
auto* continuing = Block(Assign(Expr(error_loc, "z"), 2));
auto* loop_stmt = Loop(body, continuing);
WrapInFunction(loop_stmt);
EXPECT_TRUE(r()->Resolve());
}
TEST_F(ResolverTest, Stmt_Loop_ReturnInContinuing_Direct) {
// loop {
// continuing {
// return;
// }
// }
WrapInFunction(Loop( // loop
Block(), // loop block
Block( // loop continuing block
Return(Source{{12, 34}}))));
EXPECT_FALSE(r()->Resolve());
EXPECT_EQ(
r()->error(),
R"(12:34 error: continuing blocks must not contain a return statement)");
}
TEST_F(ResolverTest, Stmt_Loop_ReturnInContinuing_Indirect) {
// loop {
// if (false) { break; }
// continuing {
// loop {
// return;
// }
// }
// }
WrapInFunction(Loop( // outer loop
Block(If(false, Block(Break()))), // outer loop block
Block(Source{{56, 78}}, // outer loop continuing block
Loop( // inner loop
Block( // inner loop block
Return(Source{{12, 34}}))))));
EXPECT_FALSE(r()->Resolve());
EXPECT_EQ(
r()->error(),
R"(12:34 error: continuing blocks must not contain a return statement
56:78 note: see continuing block here)");
}
TEST_F(ResolverTest, Stmt_Loop_DiscardInContinuing_Direct) {
// loop {
// continuing {
// discard;
// }
// }
WrapInFunction(Loop( // loop
Block(), // loop block
Block( // loop continuing block
Discard(Source{{12, 34}}))));
EXPECT_FALSE(r()->Resolve());
EXPECT_EQ(
r()->error(),
R"(12:34 error: continuing blocks must not contain a discard statement)");
}
TEST_F(ResolverTest, Stmt_Loop_DiscardInContinuing_Indirect) {
// loop {
// if (false) { break; }
// continuing {
// loop { discard; }
// }
// }
WrapInFunction(Loop( // outer loop
Block(If(false, Block(Break()))), // outer loop block
Block(Source{{56, 78}}, // outer loop continuing block
Loop( // inner loop
Block( // inner loop block
Discard(Source{{12, 34}}))))));
EXPECT_FALSE(r()->Resolve());
EXPECT_EQ(
r()->error(),
R"(12:34 error: continuing blocks must not contain a discard statement
56:78 note: see continuing block here)");
}
TEST_F(ResolverTest, Stmt_Loop_DiscardInContinuing_Indirect_ViaCall) {
// fn MayDiscard() { if (true) { discard; } }
// fn F() { MayDiscard(); }
// loop {
// continuing {
// loop { F(); }
// }
// }
Func("MayDiscard", {}, ty.void_(), {If(true, Block(Discard()))});
Func("SomeFunc", {}, ty.void_(), {CallStmt(Call("MayDiscard"))});
WrapInFunction(Loop( // outer loop
Block(), // outer loop block
Block(Source{{56, 78}}, // outer loop continuing block
Loop( // inner loop
Block( // inner loop block
CallStmt(Call(Source{{12, 34}}, "SomeFunc")))))));
EXPECT_FALSE(r()->Resolve());
EXPECT_EQ(
r()->error(),
R"(12:34 error: cannot call a function that may discard inside a continuing block
56:78 note: see continuing block here)");
}
TEST_F(ResolverTest, Stmt_Loop_ContinueInContinuing_Direct) {
// loop {
// continuing {
// continue;
// }
// }
WrapInFunction(Loop( // loop
Block(), // loop block
Block(Source{{56, 78}}, // loop continuing block
Continue(Source{{12, 34}}))));
EXPECT_FALSE(r()->Resolve());
EXPECT_EQ(
r()->error(),
"12:34 error: continuing blocks must not contain a continue statement");
}
TEST_F(ResolverTest, Stmt_Loop_ContinueInContinuing_Indirect) {
// loop {
// if (false) { break; }
// continuing {
// loop {
// if (false) { break; }
// continue;
// }
// }
// }
WrapInFunction(Loop( // outer loop
Block( // outer loop block
If(false, Block(Break()))), // if (false) { break; }
Block( // outer loop continuing block
Loop( // inner loop
Block( // inner loop block
If(false, Block(Break())), // if (false) { break; }
Continue(Source{{12, 34}})))))); // continue
EXPECT_TRUE(r()->Resolve()) << r()->error();
}
TEST_F(ResolverTest, Stmt_ForLoop_ReturnInContinuing_Direct) {
// for(;; return) {
// break;
// }
WrapInFunction(For(nullptr, nullptr, Return(Source{{12, 34}}), //
Block(Break())));
EXPECT_FALSE(r()->Resolve());
EXPECT_EQ(
r()->error(),
R"(12:34 error: continuing blocks must not contain a return statement)");
}
TEST_F(ResolverTest, Stmt_ForLoop_ReturnInContinuing_Indirect) {
// for(;; loop { return }) {
// break;
// }
WrapInFunction(For(nullptr, nullptr,
Loop(Source{{56, 78}}, //
Block(Return(Source{{12, 34}}))), //
Block(Break())));
EXPECT_FALSE(r()->Resolve());
EXPECT_EQ(
r()->error(),
R"(12:34 error: continuing blocks must not contain a return statement
56:78 note: see continuing block here)");
}
TEST_F(ResolverTest, Stmt_ForLoop_DiscardInContinuing_Direct) {
// for(;; discard) {
// break;
// }
WrapInFunction(For(nullptr, nullptr, Discard(Source{{12, 34}}), //
Block(Break())));
EXPECT_FALSE(r()->Resolve());
EXPECT_EQ(
r()->error(),
R"(12:34 error: continuing blocks must not contain a discard statement)");
}
TEST_F(ResolverTest, Stmt_ForLoop_DiscardInContinuing_Indirect) {
// for(;; loop { discard }) {
// break;
// }
WrapInFunction(For(nullptr, nullptr,
Loop(Source{{56, 78}}, //
Block(Discard(Source{{12, 34}}))), //
Block(Break())));
EXPECT_FALSE(r()->Resolve());
EXPECT_EQ(
r()->error(),
R"(12:34 error: continuing blocks must not contain a discard statement
56:78 note: see continuing block here)");
}
TEST_F(ResolverTest, Stmt_ForLoop_DiscardInContinuing_Indirect_ViaCall) {
// fn MayDiscard() { if (true) { discard; } }
// fn F() { MayDiscard(); }
// for(;; loop { F() }) {
// break;
// }
Func("MayDiscard", {}, ty.void_(), {If(true, Block(Discard()))});
Func("F", {}, ty.void_(), {CallStmt(Call("MayDiscard"))});
WrapInFunction(For(nullptr, nullptr,
Loop(Source{{56, 78}}, //
Block(CallStmt(Call(Source{{12, 34}}, "F")))), //
Block(Break())));
EXPECT_FALSE(r()->Resolve());
EXPECT_EQ(
r()->error(),
R"(12:34 error: cannot call a function that may discard inside a continuing block
56:78 note: see continuing block here)");
}
TEST_F(ResolverTest, Stmt_ForLoop_ContinueInContinuing_Direct) {
// for(;; continue) {
// break;
// }
WrapInFunction(For(nullptr, nullptr, Continue(Source{{12, 34}}), //
Block(Break())));
EXPECT_FALSE(r()->Resolve());
EXPECT_EQ(
r()->error(),
"12:34 error: continuing blocks must not contain a continue statement");
}
TEST_F(ResolverTest, Stmt_ForLoop_ContinueInContinuing_Indirect) {
// for(;; loop { if (false) { break; } continue }) {
// break;
// }
WrapInFunction(For(nullptr, nullptr,
Loop( //
Block(If(false, Block(Break())), //
Continue(Source{{12, 34}}))), //
Block(Break())));
EXPECT_TRUE(r()->Resolve()) << r()->error();
}
TEST_F(ResolverTest, Stmt_ForLoop_CondIsBoolRef) {
// var cond : bool = true;
// for (; cond; ) {
// }
auto* cond = Var("cond", ty.bool_(), Expr(true));
WrapInFunction(Decl(cond), For(nullptr, "cond", nullptr, Block()));
EXPECT_TRUE(r()->Resolve()) << r()->error();
}
TEST_F(ResolverTest, Stmt_ForLoop_CondIsNotBool) {
// for (; 1.0f; ) {
// }
WrapInFunction(For(nullptr, Expr(Source{{12, 34}}, 1.0f), nullptr, Block()));
EXPECT_FALSE(r()->Resolve());
EXPECT_EQ(r()->error(),
"12:34 error: for-loop condition must be bool, got f32");
}
TEST_F(ResolverValidationTest, Stmt_ContinueInLoop) {
WrapInFunction(Loop(Block(If(false, Block(Break())), //
Continue(Source{{12, 34}}))));
EXPECT_TRUE(r()->Resolve()) << r()->error();
}
TEST_F(ResolverValidationTest, Stmt_ContinueNotInLoop) {
WrapInFunction(Continue(Source{{12, 34}}));
EXPECT_FALSE(r()->Resolve());
EXPECT_EQ(r()->error(), "12:34 error: continue statement must be in a loop");
}
TEST_F(ResolverValidationTest, Stmt_BreakInLoop) {
WrapInFunction(Loop(Block(Break(Source{{12, 34}}))));
EXPECT_TRUE(r()->Resolve()) << r()->error();
}
TEST_F(ResolverValidationTest, Stmt_BreakInSwitch) {
WrapInFunction(Loop(Block(Switch(Expr(1), //
Case(Expr(1), //
Block(Break())), //
DefaultCase()), //
Break()))); //
EXPECT_TRUE(r()->Resolve()) << r()->error();
}
TEST_F(ResolverValidationTest, Stmt_BreakInIfTrueInContinuing) {
auto* cont = Block( // continuing {
If(true, Block( // if(true) {
Break(Source{{12, 34}})))); // break;
// }
// }
WrapInFunction(Loop(Block(), cont));
EXPECT_TRUE(r()->Resolve()) << r()->error();
}
TEST_F(ResolverValidationTest, Stmt_BreakInIfElseInContinuing) {
auto* cont = Block( // continuing {
If(true, Block(), // if(true) {
Else(Block( // } else {
Break(Source{{12, 34}}))))); // break;
// }
// }
WrapInFunction(Loop(Block(), cont));
EXPECT_TRUE(r()->Resolve()) << r()->error();
}
TEST_F(ResolverValidationTest, Stmt_BreakInContinuing) {
auto* cont = Block( // continuing {
Block(Break(Source{{12, 34}}))); // break;
// }
WrapInFunction(Loop(Block(), cont));
EXPECT_FALSE(r()->Resolve());
EXPECT_EQ(
r()->error(),
"12:34 error: break statement in a continuing block must be the single "
"statement of an if statement's true or false block, and that if "
"statement must be the last statement of the continuing block\n"
"12:34 note: break statement is not directly in if statement block");
}
TEST_F(ResolverValidationTest, Stmt_BreakInIfInIfInContinuing) {
auto* cont = Block( // continuing {
If(true, Block( // if(true) {
If(Source{{56, 78}}, true, // if(true) {
Block(Break(Source{{12, 34}})))))); // break;
// }
// }
// }
WrapInFunction(Loop(Block(), cont));
EXPECT_FALSE(r()->Resolve());
EXPECT_EQ(
r()->error(),
"12:34 error: break statement in a continuing block must be the single "
"statement of an if statement's true or false block, and that if "
"statement must be the last statement of the continuing block\n"
"56:78 note: if statement containing break statement is not directly in "
"continuing block");
}
TEST_F(ResolverValidationTest, Stmt_BreakInIfTrueMultipleStmtsInContinuing) {
auto* cont = Block( // continuing {
If(true, Block(Source{{56, 78}}, // if(true) {
Assign(Phony(), 1), // _ = 1;
Break(Source{{12, 34}})))); // break;
// }
// }
WrapInFunction(Loop(Block(), cont));
EXPECT_FALSE(r()->Resolve());
EXPECT_EQ(
r()->error(),
"12:34 error: break statement in a continuing block must be the single "
"statement of an if statement's true or false block, and that if "
"statement must be the last statement of the continuing block\n"
"56:78 note: if statement block contains multiple statements");
}
TEST_F(ResolverValidationTest, Stmt_BreakInIfElseMultipleStmtsInContinuing) {
auto* cont = Block( // continuing {
If(true, Block(), // if(true) {
Else(Block(Source{{56, 78}}, // } else {
Assign(Phony(), 1), // _ = 1;
Break(Source{{12, 34}}))))); // break;
// }
// }
WrapInFunction(Loop(Block(), cont));
EXPECT_FALSE(r()->Resolve());
EXPECT_EQ(
r()->error(),
"12:34 error: break statement in a continuing block must be the single "
"statement of an if statement's true or false block, and that if "
"statement must be the last statement of the continuing block\n"
"56:78 note: if statement block contains multiple statements");
}
TEST_F(ResolverValidationTest, Stmt_BreakInIfElseIfInContinuing) {
auto* cont = Block( // continuing {
If(true, Block(), // if(true) {
Else(Expr(Source{{56, 78}}, true), // } else if (true) {
Block(Break(Source{{12, 34}}))))); // break;
// }
// }
WrapInFunction(Loop(Block(), cont));
EXPECT_FALSE(r()->Resolve());
EXPECT_EQ(
r()->error(),
"12:34 error: break statement in a continuing block must be the single "
"statement of an if statement's true or false block, and that if "
"statement must be the last statement of the continuing block\n"
"56:78 note: else has condition");
}
TEST_F(ResolverValidationTest, Stmt_BreakInIfNonEmptyElseInContinuing) {
auto* cont = Block( // continuing {
If(true, // if(true) {
Block(Break(Source{{12, 34}})), // break;
Else(Block(Source{{56, 78}}, // } else {
Assign(Phony(), 1))))); // _ = 1;
// }
// }
WrapInFunction(Loop(Block(), cont));
EXPECT_FALSE(r()->Resolve());
EXPECT_EQ(
r()->error(),
"12:34 error: break statement in a continuing block must be the single "
"statement of an if statement's true or false block, and that if "
"statement must be the last statement of the continuing block\n"
"56:78 note: non-empty false block");
}
TEST_F(ResolverValidationTest, Stmt_BreakInIfElseNonEmptyTrueInContinuing) {
auto* cont = Block( // continuing {
If(true, // if(true) {
Block(Source{{56, 78}}, Assign(Phony(), 1)), // _ = 1;
Else(Block( // } else {
Break(Source{{12, 34}}))))); // break;
// }
// }
WrapInFunction(Loop(Block(), cont));
EXPECT_FALSE(r()->Resolve());
EXPECT_EQ(
r()->error(),
"12:34 error: break statement in a continuing block must be the single "
"statement of an if statement's true or false block, and that if "
"statement must be the last statement of the continuing block\n"
"56:78 note: non-empty true block");
}
TEST_F(ResolverValidationTest, Stmt_BreakInIfInContinuingNotLast) {
auto* cont = Block( // continuing {
If(Source{{56, 78}}, true, // if(true) {
Block(Break(Source{{12, 34}}))), // break;
// }
Assign(Phony(), 1)); // _ = 1;
// }
WrapInFunction(Loop(Block(), cont));
EXPECT_FALSE(r()->Resolve());
EXPECT_EQ(
r()->error(),
"12:34 error: break statement in a continuing block must be the single "
"statement of an if statement's true or false block, and that if "
"statement must be the last statement of the continuing block\n"
"56:78 note: if statement containing break statement is not the last "
"statement of the continuing block");
}
TEST_F(ResolverValidationTest, Stmt_BreakNotInLoopOrSwitch) {
WrapInFunction(Break(Source{{12, 34}}));
EXPECT_FALSE(r()->Resolve());
EXPECT_EQ(r()->error(),
"12:34 error: break statement must be in a loop or switch case");
}
TEST_F(ResolverValidationTest, StructMemberDuplicateName) {
Structure("S", {Member(Source{{12, 34}}, "a", ty.i32()),
Member(Source{{56, 78}}, "a", ty.i32())});
EXPECT_FALSE(r()->Resolve());
EXPECT_EQ(r()->error(),
"56:78 error: redefinition of 'a'\n12:34 note: previous definition "
"is here");
}
TEST_F(ResolverValidationTest, StructMemberDuplicateNameDifferentTypes) {
Structure("S", {Member(Source{{12, 34}}, "a", ty.bool_()),
Member(Source{{12, 34}}, "a", ty.vec3<f32>())});
EXPECT_FALSE(r()->Resolve());
EXPECT_EQ(r()->error(),
"12:34 error: redefinition of 'a'\n12:34 note: previous definition "
"is here");
}
TEST_F(ResolverValidationTest, StructMemberDuplicateNamePass) {
Structure("S", {Member("a", ty.i32()), Member("b", ty.f32())});
Structure("S1", {Member("a", ty.i32()), Member("b", ty.f32())});
EXPECT_TRUE(r()->Resolve());
}
TEST_F(ResolverValidationTest, NonPOTStructMemberAlignAttribute) {
Structure("S", {
Member("a", ty.f32(), {MemberAlign(Source{{12, 34}}, 3)}),
});
EXPECT_FALSE(r()->Resolve());
EXPECT_EQ(
r()->error(),
"12:34 error: align value must be a positive, power-of-two integer");
}
TEST_F(ResolverValidationTest, ZeroStructMemberAlignAttribute) {
Structure("S", {
Member("a", ty.f32(), {MemberAlign(Source{{12, 34}}, 0)}),
});
EXPECT_FALSE(r()->Resolve());
EXPECT_EQ(
r()->error(),
"12:34 error: align value must be a positive, power-of-two integer");
}
TEST_F(ResolverValidationTest, ZeroStructMemberSizeAttribute) {
Structure("S", {
Member("a", ty.f32(), {MemberSize(Source{{12, 34}}, 0)}),
});
EXPECT_FALSE(r()->Resolve());
EXPECT_EQ(r()->error(),
"12:34 error: size must be at least as big as the type's size (4)");
}
TEST_F(ResolverValidationTest, OffsetAndSizeAttribute) {
Structure("S", {
Member(Source{{12, 34}}, "a", ty.f32(),
{MemberOffset(0), MemberSize(4)}),
});
EXPECT_FALSE(r()->Resolve());
EXPECT_EQ(r()->error(),
"12:34 error: offset attributes cannot be used with align or size "
"attributes");
}
TEST_F(ResolverValidationTest, OffsetAndAlignAttribute) {
Structure("S", {
Member(Source{{12, 34}}, "a", ty.f32(),
{MemberOffset(0), MemberAlign(4)}),
});
EXPECT_FALSE(r()->Resolve());
EXPECT_EQ(r()->error(),
"12:34 error: offset attributes cannot be used with align or size "
"attributes");
}
TEST_F(ResolverValidationTest, OffsetAndAlignAndSizeAttribute) {
Structure("S", {
Member(Source{{12, 34}}, "a", ty.f32(),
{MemberOffset(0), MemberAlign(4), MemberSize(4)}),
});
EXPECT_FALSE(r()->Resolve());
EXPECT_EQ(r()->error(),
"12:34 error: offset attributes cannot be used with align or size "
"attributes");
}
TEST_F(ResolverTest, Expr_Constructor_Cast_Pointer) {
auto* vf = Var("vf", ty.f32());
auto* c =
Construct(Source{{12, 34}}, ty.pointer<i32>(ast::StorageClass::kFunction),
ExprList(vf));
auto* ip = Const("ip", ty.pointer<i32>(ast::StorageClass::kFunction), c);
WrapInFunction(Decl(vf), Decl(ip));
EXPECT_FALSE(r()->Resolve());
EXPECT_EQ(r()->error(), "12:34 error: type is not constructible");
}
} // namespace
} // namespace tint::resolver
TINT_INSTANTIATE_TYPEINFO(tint::resolver::FakeStmt);
TINT_INSTANTIATE_TYPEINFO(tint::resolver::FakeExpr);