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// Copyright 2021 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 "src/tint/lang/wgsl/resolver/resolver.h"
#include "gmock/gmock.h"
#include "gtest/gtest-spi.h"
#include "src/tint/lang/core/builtin_value.h"
#include "src/tint/lang/core/type/sampled_texture.h"
#include "src/tint/lang/core/type/texture_dimension.h"
#include "src/tint/lang/wgsl/ast/assignment_statement.h"
#include "src/tint/lang/wgsl/ast/break_statement.h"
#include "src/tint/lang/wgsl/ast/builtin_texture_helper_test.h"
#include "src/tint/lang/wgsl/ast/call_statement.h"
#include "src/tint/lang/wgsl/ast/continue_statement.h"
#include "src/tint/lang/wgsl/ast/discard_statement.h"
#include "src/tint/lang/wgsl/ast/if_statement.h"
#include "src/tint/lang/wgsl/ast/loop_statement.h"
#include "src/tint/lang/wgsl/ast/return_statement.h"
#include "src/tint/lang/wgsl/ast/stage_attribute.h"
#include "src/tint/lang/wgsl/ast/switch_statement.h"
#include "src/tint/lang/wgsl/ast/unary_op_expression.h"
#include "src/tint/lang/wgsl/ast/variable_decl_statement.h"
#include "src/tint/lang/wgsl/resolver/resolve.h"
#include "src/tint/lang/wgsl/resolver/resolver_helper_test.h"
#include "src/tint/lang/wgsl/sem/call.h"
#include "src/tint/lang/wgsl/sem/function.h"
#include "src/tint/lang/wgsl/sem/member_accessor_expression.h"
#include "src/tint/lang/wgsl/sem/statement.h"
#include "src/tint/lang/wgsl/sem/variable.h"
namespace tint::resolver {
namespace {
using ::testing::ElementsAre;
using ::testing::HasSubstr;
using namespace tint::core::fluent_types; // NOLINT
using namespace tint::core::number_suffixes; // NOLINT
using ResolverValidationTest = ResolverTest;
class FakeStmt final : public Castable<FakeStmt, ast::Statement> {
public:
FakeStmt(GenerationID pid, ast::NodeID nid, Source src) : Base(pid, nid, src) {}
FakeStmt* Clone(ast::CloneContext&) const override { return nullptr; }
};
class FakeExpr final : public Castable<FakeExpr, ast::Expression> {
public:
FakeExpr(GenerationID pid, ast::NodeID nid, Source src) : Base(pid, nid, src) {}
FakeExpr* Clone(ast::CloneContext&) const override { return nullptr; }
};
TEST_F(ResolverValidationTest, WorkgroupMemoryUsedInVertexStage) {
GlobalVar(Source{{1, 2}}, "wg", ty.vec4<f32>(), core::AddressSpace::kWorkgroup);
GlobalVar("dst", ty.vec4<f32>(), core::AddressSpace::kPrivate);
auto* stmt = Assign(Expr("dst"), Expr(Source{{3, 4}}, "wg"));
Func(Source{{9, 10}}, "f0", tint::Empty, ty.vec4<f32>(),
Vector{
stmt,
Return(Expr("dst")),
},
Vector{
Stage(ast::PipelineStage::kVertex),
},
Vector{
Builtin(core::BuiltinValue::kPosition),
});
EXPECT_FALSE(r()->Resolve());
EXPECT_EQ(
r()->error(),
R"(3:4 error: var with 'workgroup' address space cannot be used by vertex pipeline stage
1:2 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(); }
// @fragment
// fn f0() {
// f1();
//}
GlobalVar(Source{{1, 2}}, "wg", ty.vec4<f32>(), core::AddressSpace::kWorkgroup);
GlobalVar("dst", ty.vec4<f32>(), core::AddressSpace::kPrivate);
auto* stmt = Assign(Expr("dst"), Expr(Source{{3, 4}}, "wg"));
Func(Source{{5, 6}}, "f2", tint::Empty, ty.void_(), Vector{stmt});
Func(Source{{7, 8}}, "f1", tint::Empty, ty.void_(),
Vector{
CallStmt(Call("f2")),
});
Func(Source{{9, 10}}, "f0", tint::Empty, ty.void_(), Vector{CallStmt(Call("f1"))},
Vector{
Stage(ast::PipelineStage::kFragment),
});
EXPECT_FALSE(r()->Resolve());
EXPECT_EQ(
r()->error(),
R"(3:4 error: var with 'workgroup' address space 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>());
resolver::Resolve(b);
},
"internal compiler error: Switch() matched no cases. Type: tint::resolver::FakeStmt");
}
TEST_F(ResolverValidationTest, Stmt_If_NonBool) {
// if (1.23f) {}
WrapInFunction(If(Expr(Source{{12, 34}}, 1.23_f), Block()));
EXPECT_FALSE(r()->Resolve());
EXPECT_EQ(r()->error(), R"(12:34 error: if statement condition must be bool, got f32)");
}
TEST_F(ResolverValidationTest, Stmt_ElseIf_NonBool) {
// else if (1.23f) {}
WrapInFunction(If(Expr(true), Block(), Else(If(Expr(Source{{12, 34}}, 1.23_f), Block()))));
EXPECT_FALSE(r()->Resolve());
EXPECT_EQ(r()->error(), R"(12:34 error: if 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: Switch() matched no cases. Type: tint::resolver::FakeExpr");
}
TEST_F(ResolverValidationTest, UsingUndefinedVariable_Fail) {
// b = 2;
auto* lhs = Expr(Source{{12, 34}}, "b");
auto* rhs = Expr(2_i);
auto* assign = Assign(lhs, rhs);
WrapInFunction(assign);
EXPECT_FALSE(r()->Resolve());
EXPECT_EQ(r()->error(), R"(12:34 error: unresolved value 'b')");
}
TEST_F(ResolverValidationTest, UsingUndefinedVariableInBlockStatement_Fail) {
// {
// b = 2;
// }
auto* lhs = Expr(Source{{12, 34}}, "b");
auto* rhs = Expr(2_i);
auto* body = Block(Assign(lhs, rhs));
WrapInFunction(body);
EXPECT_FALSE(r()->Resolve());
EXPECT_EQ(r()->error(), R"(12:34 error: unresolved value 'b')");
}
TEST_F(ResolverValidationTest, UsingUndefinedVariableGlobalVariable_Pass) {
// var global_var: f32 = 2.1;
// fn my_func() {
// global_var = 3.14;
// return;
// }
GlobalVar("global_var", ty.f32(), core::AddressSpace::kPrivate, Expr(2.1_f));
Func("my_func", tint::Empty, ty.void_(),
Vector{
Assign(Expr(Source{{12, 34}}, "global_var"), 3.14_f),
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(), Expr(2_f));
auto* cond = Expr(true);
auto* body = Block(Decl(var));
SetSource(Source{{12, 34}});
auto* lhs = Expr(Source{{12, 34}}, "a");
auto* rhs = Expr(3.14_f);
auto* outer_body = Block(If(cond, body), Assign(lhs, rhs));
WrapInFunction(outer_body);
EXPECT_FALSE(r()->Resolve());
EXPECT_EQ(r()->error(), R"(12:34 error: unresolved value 'a')");
}
TEST_F(ResolverValidationTest, UsingUndefinedVariableOuterScope_Pass) {
// {
// var a : f32 = 2.0;
// if (true) { a = 3.14; }
// }
auto* var = Var("a", ty.f32(), Expr(2_f));
auto* lhs = Expr(Source{{12, 34}}, "a");
auto* rhs = Expr(3.14_f);
auto* cond = Expr(true);
auto* body = Block(Assign(lhs, rhs));
auto* outer_body = Block(Decl(var), If(cond, body));
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(), Expr(2_f));
auto* first_body = Block(Decl(var));
auto* lhs = Expr(Source{{12, 34}}, "a");
auto* rhs = Expr(3.14_f);
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(), R"(12:34 error: unresolved value 'a')");
}
TEST_F(ResolverValidationTest, AddressSpace_FunctionVariableWorkgroupClass) {
auto* var = Var("var", ty.i32(), core::AddressSpace::kWorkgroup);
Func("func", tint::Empty, ty.void_(),
Vector{
Decl(var),
});
EXPECT_FALSE(r()->Resolve());
EXPECT_EQ(r()->error(),
"error: function-scope 'var' declaration must use 'function' address space");
}
TEST_F(ResolverValidationTest, AddressSpace_FunctionVariableI32) {
auto* var = Var("s", ty.i32(), core::AddressSpace::kPrivate);
Func("func", tint::Empty, ty.void_(),
Vector{
Decl(var),
});
EXPECT_FALSE(r()->Resolve());
EXPECT_EQ(r()->error(),
"error: function-scope 'var' declaration must use 'function' address space");
}
TEST_F(ResolverValidationTest, AddressSpace_SamplerExplicitAddressSpace) {
auto t = ty.sampler(core::type::SamplerKind::kSampler);
GlobalVar(Source{{12, 34}}, "var", t, core::AddressSpace::kPrivate, Binding(0_a), Group(0_a));
EXPECT_FALSE(r()->Resolve());
EXPECT_EQ(r()->error(),
R"(12:34 error: variables of type 'sampler' must not specify an address space)");
}
TEST_F(ResolverValidationTest, AddressSpace_TextureExplicitAddressSpace) {
auto t = ty.sampled_texture(core::type::TextureDimension::k1d, ty.f32());
GlobalVar(Source{{12, 34}}, "var", t, core::AddressSpace::kFunction, Binding(0_a), Group(0_a));
EXPECT_FALSE(r()->Resolve()) << r()->error();
EXPECT_EQ(
r()->error(),
R"(12:34 error: variables of type 'texture_1d<f32>' must not specify an address space)");
}
TEST_F(ResolverValidationTest, Expr_MemberAccessor_VectorSwizzle_BadChar) {
GlobalVar("my_vec", ty.vec3<f32>(), core::AddressSpace::kPrivate);
auto* mem = MemberAccessor("my_vec", Ident(Source{{{3, 3}, {3, 7}}}, "xyqz"));
WrapInFunction(mem);
EXPECT_FALSE(r()->Resolve());
EXPECT_EQ(r()->error(), R"(3:5 error: invalid vector swizzle character)");
}
TEST_F(ResolverValidationTest, Expr_MemberAccessor_VectorSwizzle_MixedChars) {
GlobalVar("my_vec", ty.vec4<f32>(), core::AddressSpace::kPrivate);
auto* mem = MemberAccessor("my_vec", Ident(Source{{{3, 3}, {3, 7}}}, "rgyw"));
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) {
GlobalVar("my_vec", ty.vec3<f32>(), core::AddressSpace::kPrivate);
auto* mem = MemberAccessor("my_vec", Ident(Source{{{3, 3}, {3, 8}}}, "zzzzz"));
WrapInFunction(mem);
EXPECT_FALSE(r()->Resolve());
EXPECT_EQ(r()->error(), R"(3:3 error: invalid vector swizzle size)");
}
TEST_F(ResolverValidationTest, Expr_MemberAccessor_VectorSwizzle_BadIndex) {
GlobalVar("my_vec", ty.vec2<f32>(), core::AddressSpace::kPrivate);
auto* mem = MemberAccessor("my_vec", Ident(Source{{3, 3}}, "z"));
WrapInFunction(mem);
EXPECT_FALSE(r()->Resolve());
EXPECT_EQ(r()->error(), R"(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* addressOf_expr = AddressOf(param);
auto* accessor_expr = MemberAccessor(addressOf_expr, Ident(Source{{12, 34}}, "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(), "error: cannot dereference expression of type 'f32'");
}
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.ptr<function, vec4<f32>>());
auto* star_p = Deref(p);
auto* accessor_expr = MemberAccessor(star_p, "z");
auto* x = Var("x", ty.f32(), accessor_expr);
Func("func", Vector{p}, ty.f32(),
Vector{
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.ptr<function, vec4<f32>>());
auto* accessor_expr = MemberAccessor(p, Ident(Source{{12, 34}}, "z"));
auto* star_p = Deref(accessor_expr);
auto* x = Var("x", ty.f32(), star_p);
Func("func", Vector{p}, ty.f32(),
Vector{
Decl(x),
Return(x),
});
EXPECT_FALSE(r()->Resolve());
EXPECT_EQ(r()->error(), "error: cannot dereference expression of type 'f32'");
}
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())));
auto* continuing = Block(Assign(Expr("z"), 2_i));
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 = 2i;
// }
// }
auto* body = Block(If(false, Block(Break())), //
Decl(Var("z", ty.i32())), Block(Block(Block(Continue()))));
auto* continuing = Block(Assign(Expr("z"), 2_i));
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 = 2i;
// }
// }
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())));
auto* continuing = Block(Assign(Expr(ref_loc, "z"), 2_i));
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 = 2i; // 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())));
auto* continuing = Block(If(Expr(true), Block(Assign(Expr(ref_loc, "z"), 2_i))));
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 < 2i) {
// }
// }
// }
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())));
auto* compare =
create<ast::BinaryExpression>(core::BinaryOp::kLessThan, Expr(ref_loc, "z"), Expr(2_i));
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 = 2i; // 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())));
auto* continuing = Block(Loop(Block(Assign(Expr(ref_loc, "z"), 2_i))));
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 = 2i;
// }
// }
auto* inner_loop = Loop(Block( //
If(true, Block(Continue())), //
Break()));
auto* body = Block(inner_loop, //
Decl(Var("z", ty.i32())), //
Break());
auto* continuing = Block(Assign("z", 2_i));
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 = 2i;
// }
// }
// }
auto* inner_loop = Loop(Block(If(true, Block(Continue())), //
Break()));
auto* body = Block(inner_loop, //
Decl(Var("z", ty.i32())), //
Break());
auto* continuing = Block(If(Expr(true), Block(Assign("z", 2_i))));
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 = 2i;
// break;
// }
// }
// }
auto* inner_loop = Loop(Block(If(true, Block(Continue())), //
Break()));
auto* body = Block(inner_loop, //
Decl(Var("z", ty.i32())), //
Break());
auto* continuing = Block(Loop(Block(Assign("z", 2_i), //
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 = 2i;
// }
// }
auto error_loc = Source{{12, 34}};
auto* body = Block(Decl(Var("z", ty.i32())), If(true, Block(Continue())), //
Break());
auto* continuing = Block(Assign(Expr(error_loc, "z"), 2_i));
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;
// breakif true;
// }
// }
Func("my_func", tint::Empty, ty.void_(),
Vector{Loop( // loop
Block(), // loop block
Block( // loop continuing block
Discard(Source{{12, 34}}), BreakIf(true)))});
EXPECT_TRUE(r()->Resolve()) << r()->error();
}
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(),
R"(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(ResolverValidationTest, Stmt_Loop_Continuing_BreakIf) {
// loop {
// continuing {
// break if true;
// }
// }
auto* body = Block();
auto* continuing = Block(BreakIf(true));
auto* loop_stmt = Loop(body, continuing);
WrapInFunction(loop_stmt);
ASSERT_TRUE(r()->Resolve()) << r()->error();
}
TEST_F(ResolverValidationTest, Stmt_Loop_Continuing_BreakIf_Not_Last) {
// loop {
// var z : i32;
// continuing {
// break if true;
// z = 2i;
// }
// }
auto* body = Block(Decl(Var("z", ty.i32())));
auto* continuing =
Block(Source{{10, 9}}, BreakIf(Source{{12, 23}}, true), Assign(Expr("z"), 2_i));
auto* loop_stmt = Loop(body, continuing);
WrapInFunction(loop_stmt);
EXPECT_FALSE(r()->Resolve());
EXPECT_EQ(r()->error(),
R"(12:23 error: break-if must be the last statement in a continuing block
10:9 note: see continuing block here)");
}
TEST_F(ResolverValidationTest, Stmt_Loop_Continuing_BreakIf_Duplicate) {
// loop {
// continuing {
// break if true;
// break if false;
// }
// }
auto* body = Block();
auto* continuing = Block(Source{{10, 9}}, BreakIf(Source{{12, 23}}, true), BreakIf(false));
auto* loop_stmt = Loop(body, continuing);
WrapInFunction(loop_stmt);
EXPECT_FALSE(r()->Resolve());
EXPECT_EQ(r()->error(),
R"(12:23 error: break-if must be the last statement in a continuing block
10:9 note: see continuing block here)");
}
TEST_F(ResolverValidationTest, Stmt_Loop_Continuing_BreakIf_NonBool) {
// loop {
// continuing {
// break if 1i;
// }
// }
auto* body = Block();
auto* continuing = Block(BreakIf(Expr(Source{{12, 23}}, 1_i)));
auto* loop_stmt = Loop(body, continuing);
WrapInFunction(loop_stmt);
EXPECT_FALSE(r()->Resolve());
EXPECT_EQ(r()->error(), R"(12:23 error: break-if statement condition must be bool, got i32)");
}
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;
// }
Func("my_func", tint::Empty, ty.void_(),
Vector{For(nullptr, nullptr, Discard(Source{{12, 34}}), //
Block(Break()))});
EXPECT_TRUE(r()->Resolve()) << r()->error();
}
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(),
R"(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_f), nullptr, Block()));
EXPECT_FALSE(r()->Resolve());
EXPECT_EQ(r()->error(), R"(12:34 error: for-loop condition must be bool, got f32)");
}
TEST_F(ResolverTest, Stmt_While_CondIsBoolRef) {
// var cond : bool = false;
// while (cond) {
// }
auto* cond = Var("cond", ty.bool_(), Expr(false));
WrapInFunction(Decl(cond), While("cond", Block()));
EXPECT_TRUE(r()->Resolve()) << r()->error();
}
TEST_F(ResolverTest, Stmt_While_CondIsNotBool) {
// while (1.0f) {
// }
WrapInFunction(While(Expr(Source{{12, 34}}, 1_f), Block()));
EXPECT_FALSE(r()->Resolve());
EXPECT_EQ(r()->error(), R"(12:34 error: while 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(), R"(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_i), //
Case(CaseSelector(1_i), //
Block(Break())), //
DefaultCase()), //
Break()))); //
EXPECT_TRUE(r()->Resolve()) << r()->error();
}
TEST_F(ResolverValidationTest, Stmt_BreakInSwitchInContinuing) {
// loop {
// continuing {
// switch(1) {
// default:
// break;
// }
// }
// }
auto* cont = Block(Switch(1_i, DefaultCase(Block(Break()))));
WrapInFunction(Loop(Block(Break()), cont));
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_FALSE(r()->Resolve());
EXPECT_EQ(
r()->error(),
R"(12:34 error: 'break' must not be used to exit from a continuing block. Use 'break if' instead.)");
}
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_FALSE(r()->Resolve());
EXPECT_EQ(
r()->error(),
R"(12:34 error: 'break' must not be used to exit from a continuing block. Use 'break if' instead.)");
}
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(),
R"(12:34 error: 'break' must not be used to exit from a continuing block. Use 'break if' instead.)");
}
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(),
R"(12:34 error: 'break' must not be used to exit from a continuing block. Use 'break if' instead.)");
}
TEST_F(ResolverValidationTest, Stmt_BreakInIfTrueMultipleStmtsInContinuing) {
auto* cont = Block( // continuing {
If(true, Block(Source{{56, 78}}, // if(true) {
Assign(Phony(), 1_i), // _ = 1i;
Break(Source{{12, 34}})))); // break;
// }
// }
WrapInFunction(Loop(Block(), cont));
EXPECT_FALSE(r()->Resolve());
EXPECT_EQ(
r()->error(),
R"(12:34 error: 'break' must not be used to exit from a continuing block. Use 'break if' instead.)");
}
TEST_F(ResolverValidationTest, Stmt_BreakInIfElseMultipleStmtsInContinuing) {
auto* cont = Block( // continuing {
If(true, Block(), // if(true) {
Else(Block(Source{{56, 78}}, // } else {
Assign(Phony(), 1_i), // _ = 1i;
Break(Source{{12, 34}}))))); // break;
// }
// }
WrapInFunction(Loop(Block(), cont));
EXPECT_FALSE(r()->Resolve());
EXPECT_EQ(
r()->error(),
R"(12:34 error: 'break' must not be used to exit from a continuing block. Use 'break if' instead.)");
}
TEST_F(ResolverValidationTest, Stmt_BreakInIfElseIfInContinuing) {
auto* cont = Block( // continuing {
If(true, Block(), // if(true) {
Else(If(Source{{56, 78}}, Expr(true), // } else if (true) {
Block(Break(Source{{12, 34}})))))); // break;
// }
// }
WrapInFunction(Loop(Block(), cont));
EXPECT_FALSE(r()->Resolve());
EXPECT_EQ(
r()->error(),
R"(12:34 error: 'break' must not be used to exit from a continuing block. Use 'break if' instead.)");
}
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_i))))); // _ = 1i;
// }
// }
WrapInFunction(Loop(Block(), cont));
EXPECT_FALSE(r()->Resolve());
EXPECT_EQ(
r()->error(),
R"(12:34 error: 'break' must not be used to exit from a continuing block. Use 'break if' instead.)");
}
TEST_F(ResolverValidationTest, Stmt_BreakInIfElseNonEmptyTrueInContinuing) {
auto* cont = Block( // continuing {
If(true, // if(true) {
Block(Source{{56, 78}}, Assign(Phony(), 1_i)), // _ = 1i;
Else(Block( // } else {
Break(Source{{12, 34}}))))); // break;
// }
// }
WrapInFunction(Loop(Block(), cont));
EXPECT_FALSE(r()->Resolve());
EXPECT_EQ(
r()->error(),
R"(12:34 error: 'break' must not be used to exit from a continuing block. Use 'break if' instead.)");
}
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_i)); // _ = 1i;
// }
WrapInFunction(Loop(Block(), cont));
EXPECT_FALSE(r()->Resolve());
EXPECT_EQ(
r()->error(),
R"(12:34 error: 'break' must not be used to exit from a continuing block. Use 'break if' instead.)");
}
TEST_F(ResolverValidationTest, Stmt_BreakNotInLoopOrSwitch) {
WrapInFunction(Break(Source{{12, 34}}));
EXPECT_FALSE(r()->Resolve());
EXPECT_EQ(r()->error(), R"(12:34 error: break statement must be in a loop or switch case)");
}
TEST_F(ResolverValidationTest, StructMemberDuplicateName) {
Structure("S", Vector{
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", Vector{
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", Vector{
Member("a", ty.i32()),
Member("b", ty.f32()),
});
Structure("S1", Vector{
Member("a", ty.i32()),
Member("b", ty.f32()),
});
EXPECT_TRUE(r()->Resolve());
}
TEST_F(ResolverValidationTest, NegativeStructMemberAlignAttribute) {
Structure("S", Vector{
Member("a", ty.f32(), Vector{MemberAlign(Source{{12, 34}}, -2_i)}),
});
EXPECT_FALSE(r()->Resolve());
EXPECT_EQ(r()->error(),
R"(12:34 error: '@align' value must be a positive, power-of-two integer)");
}
TEST_F(ResolverValidationTest, NonPOTStructMemberAlignAttribute) {
Structure("S", Vector{
Member("a", ty.f32(), Vector{MemberAlign(Source{{12, 34}}, 3_i)}),
});
EXPECT_FALSE(r()->Resolve());
EXPECT_EQ(r()->error(),
R"(12:34 error: '@align' value must be a positive, power-of-two integer)");
}
TEST_F(ResolverValidationTest, ZeroStructMemberAlignAttribute) {
Structure("S", Vector{
Member("a", ty.f32(), Vector{MemberAlign(Source{{12, 34}}, 0_i)}),
});
EXPECT_FALSE(r()->Resolve());
EXPECT_EQ(r()->error(),
R"(12:34 error: '@align' value must be a positive, power-of-two integer)");
}
TEST_F(ResolverValidationTest, ZeroStructMemberSizeAttribute) {
Structure("S", Vector{
Member("a", ty.f32(), Vector{MemberSize(Source{{12, 34}}, 1_a)}),
});
EXPECT_FALSE(r()->Resolve());
EXPECT_EQ(r()->error(),
R"(12:34 error: '@size' must be at least as big as the type's size (4))");
}
TEST_F(ResolverValidationTest, OffsetAndSizeAttribute) {
Structure("S", Vector{
Member(Source{{12, 34}}, "a", ty.f32(),
Vector{MemberOffset(0_a), MemberSize(4_a)}),
});
EXPECT_FALSE(r()->Resolve());
EXPECT_EQ(r()->error(), R"(12:34 error: '@offset' cannot be used with '@align' or '@size')");
}
TEST_F(ResolverValidationTest, OffsetAndAlignAttribute) {
Structure("S", Vector{
Member(Source{{12, 34}}, "a", ty.f32(),
Vector{MemberOffset(0_a), MemberAlign(4_i)}),
});
EXPECT_FALSE(r()->Resolve());
EXPECT_EQ(r()->error(), R"(12:34 error: '@offset' cannot be used with '@align' or '@size')");
}
TEST_F(ResolverValidationTest, OffsetAndAlignAndSizeAttribute) {
Structure("S", Vector{
Member(Source{{12, 34}}, "a", ty.f32(),
Vector{MemberOffset(0_a), MemberAlign(4_i), MemberSize(4_a)}),
});
EXPECT_FALSE(r()->Resolve());
EXPECT_EQ(r()->error(), R"(12:34 error: '@offset' cannot be used with '@align' or '@size')");
}
TEST_F(ResolverTest, Expr_Initializer_Cast_Pointer) {
auto* vf = Var("vf", ty.f32());
auto* c = Call(Source{{12, 34}}, ty.ptr<function, i32>(), ExprList(vf));
auto* ip = Let("ip", ty.ptr<function, i32>(), c);
WrapInFunction(Decl(vf), Decl(ip));
EXPECT_FALSE(r()->Resolve());
EXPECT_EQ(r()->error(), R"(12:34 error: type is not constructible)");
}
TEST_F(ResolverTest, I32_Overflow) {
GlobalVar("v", ty.i32(), core::AddressSpace::kPrivate, Expr(Source{{12, 24}}, 2147483648_a));
EXPECT_FALSE(r()->Resolve());
EXPECT_EQ(r()->error(), R"(12:24 error: value 2147483648 cannot be represented as 'i32')");
}
TEST_F(ResolverTest, I32_Underflow) {
GlobalVar("v", ty.i32(), core::AddressSpace::kPrivate, Expr(Source{{12, 24}}, -2147483649_a));
EXPECT_FALSE(r()->Resolve());
EXPECT_EQ(r()->error(), R"(12:24 error: value -2147483649 cannot be represented as 'i32')");
}
TEST_F(ResolverTest, U32_Overflow) {
GlobalVar("v", ty.u32(), core::AddressSpace::kPrivate, Expr(Source{{12, 24}}, 4294967296_a));
EXPECT_FALSE(r()->Resolve());
EXPECT_EQ(r()->error(), R"(12:24 error: value 4294967296 cannot be represented as 'u32')");
}
} // namespace
} // namespace tint::resolver
TINT_INSTANTIATE_TYPEINFO(tint::resolver::FakeStmt);
TINT_INSTANTIATE_TYPEINFO(tint::resolver::FakeExpr);