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dawn-cmake/src/resolver/validation_test.cc
Ben Clayton d614dd5d12 Implement Default Struct Layout 
Implements https://github.com/gpuweb/gpuweb/pull/1447

SPIR-V Reader is still TODO, but continues to function as the offset
decoration is still supported.

Bug: tint:626
Bug: tint:629
Change-Id: Id574eb3a5c6729559382812de37b23f0c68fd406
Reviewed-on: https://dawn-review.googlesource.com/c/tint/+/43640
Commit-Queue: Ben Clayton <bclayton@chromium.org>
Reviewed-by: David Neto <dneto@google.com>
2021-03-15 10:43:11 +00:00

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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/resolver/resolver.h"
#include "gmock/gmock.h"
#include "src/ast/assignment_statement.h"
#include "src/ast/bitcast_expression.h"
#include "src/ast/break_statement.h"
#include "src/ast/call_statement.h"
#include "src/ast/continue_statement.h"
#include "src/ast/if_statement.h"
#include "src/ast/intrinsic_texture_helper_test.h"
#include "src/ast/loop_statement.h"
#include "src/ast/return_statement.h"
#include "src/ast/stage_decoration.h"
#include "src/ast/switch_statement.h"
#include "src/ast/unary_op_expression.h"
#include "src/ast/variable_decl_statement.h"
#include "src/resolver/resolver_test_helper.h"
#include "src/semantic/call.h"
#include "src/semantic/function.h"
#include "src/semantic/member_accessor_expression.h"
#include "src/semantic/statement.h"
#include "src/semantic/variable.h"
#include "src/type/access_control_type.h"
#include "src/type/sampled_texture_type.h"
using ::testing::ElementsAre;
using ::testing::HasSubstr;
namespace tint {
namespace resolver {
namespace {
using ResolverValidationTest = ResolverTest;
class FakeStmt : public ast::Statement {
public:
explicit FakeStmt(Source source) : ast::Statement(source) {}
FakeStmt* Clone(CloneContext*) const override { return nullptr; }
void to_str(const semantic::Info&, std::ostream& out, size_t) const override {
out << "Fake";
}
};
class FakeExpr : public ast::Expression {
public:
explicit FakeExpr(Source source) : ast::Expression(source) {}
FakeExpr* Clone(CloneContext*) const override { return nullptr; }
void to_str(const semantic::Info&, std::ostream&, size_t) const override {}
};
TEST_F(ResolverValidationTest, Error_WithEmptySource) {
auto* s = create<FakeStmt>();
WrapInFunction(s);
EXPECT_FALSE(r()->Resolve());
EXPECT_EQ(r()->error(),
"error: unknown statement type for type determination: Fake");
}
TEST_F(ResolverValidationTest, Stmt_Error_Unknown) {
auto* s = create<FakeStmt>(Source{Source::Location{2, 30}});
WrapInFunction(s);
EXPECT_FALSE(r()->Resolve());
EXPECT_EQ(r()->error(),
"2:30 error: unknown statement type for type determination: Fake");
}
TEST_F(ResolverValidationTest, Stmt_Call_undeclared) {
// fn main() -> void {func(); return; }
// fn func() -> void { return; }
SetSource(Source::Location{12, 34});
auto* call_expr = Call("func");
ast::VariableList params0;
Func("main", params0, ty.f32(),
ast::StatementList{
create<ast::CallStatement>(call_expr),
create<ast::ReturnStatement>(),
},
ast::DecorationList{});
Func("func", params0, ty.f32(),
ast::StatementList{
create<ast::ReturnStatement>(),
},
ast::DecorationList{});
EXPECT_FALSE(r()->Resolve());
EXPECT_EQ(r()->error(),
"12:34 error: v-0006: unable to find called function: func");
}
TEST_F(ResolverValidationTest, Stmt_Call_recursive) {
// fn main() -> void {main(); }
SetSource(Source::Location{12, 34});
auto* call_expr = Call("main");
ast::VariableList params0;
Func("main", params0, ty.f32(),
ast::StatementList{
create<ast::CallStatement>(call_expr),
},
ast::DecorationList{
create<ast::StageDecoration>(ast::PipelineStage::kVertex),
});
EXPECT_FALSE(r()->Resolve());
EXPECT_EQ(r()->error(),
"12:34 error: recursion is not permitted. 'main' attempted to call "
"itself.");
}
TEST_F(ResolverValidationTest, Stmt_If_NonBool) {
// if (1.23f) {}
WrapInFunction(If(create<ast::ScalarConstructorExpression>(Source{{12, 34}},
Literal(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_VariableDecl_MismatchedTypeScalarConstructor) {
u32 unsigned_value = 2u; // Type does not match variable type
auto* var =
Var("my_var", ty.i32(), ast::StorageClass::kNone, Expr(unsigned_value));
auto* decl =
create<ast::VariableDeclStatement>(Source{{{3, 3}, {3, 22}}}, var);
WrapInFunction(decl);
EXPECT_FALSE(r()->Resolve());
EXPECT_EQ(
r()->error(),
R"(3:3 error: constructor expression type does not match variable type)");
}
TEST_F(ResolverValidationTest,
Stmt_VariableDecl_MismatchedTypeScalarConstructor_Alias) {
auto* my_int = ty.alias("MyInt", ty.i32());
u32 unsigned_value = 2u; // Type does not match variable type
auto* var =
Var("my_var", my_int, ast::StorageClass::kNone, Expr(unsigned_value));
auto* decl =
create<ast::VariableDeclStatement>(Source{{{3, 3}, {3, 22}}}, var);
WrapInFunction(decl);
EXPECT_FALSE(r()->Resolve());
EXPECT_EQ(
r()->error(),
R"(3:3 error: constructor expression type does not match variable type)");
}
TEST_F(ResolverValidationTest, Expr_Error_Unknown) {
FakeExpr e(Source{Source::Location{2, 30}});
WrapInFunction(&e);
EXPECT_FALSE(r()->Resolve());
EXPECT_EQ(r()->error(),
"2:30 error: unknown expression for type determination");
}
TEST_F(ResolverValidationTest, Expr_DontCall_Function) {
Func("func", {}, ty.void_(), {}, {});
auto* ident = create<ast::IdentifierExpression>(
Source{{Source::Location{3, 3}, Source::Location{3, 8}}},
Symbols().Register("func"));
WrapInFunction(ident);
EXPECT_FALSE(r()->Resolve());
EXPECT_EQ(r()->error(), "3:8 error: missing '(' for function call");
}
TEST_F(ResolverValidationTest, Expr_DontCall_Intrinsic) {
auto* ident = create<ast::IdentifierExpression>(
Source{{Source::Location{3, 3}, Source::Location{3, 8}}},
Symbols().Register("round"));
WrapInFunction(ident);
EXPECT_FALSE(r()->Resolve());
EXPECT_EQ(r()->error(), "3:8 error: missing '(' for intrinsic call");
}
TEST_F(ResolverValidationTest, UsingUndefinedVariable_Fail) {
// b = 2;
SetSource(Source{Source::Location{12, 34}});
auto* lhs = Expr("b");
auto* rhs = Expr(2);
auto* assign = create<ast::AssignmentStatement>(lhs, rhs);
WrapInFunction(assign);
EXPECT_FALSE(r()->Resolve());
EXPECT_EQ(r()->error(),
"12:34 error: v-0006: identifier must be declared before use: b");
}
TEST_F(ResolverValidationTest, UsingUndefinedVariableInBlockStatement_Fail) {
// {
// b = 2;
// }
SetSource(Source{Source::Location{12, 34}});
auto* lhs = Expr("b");
auto* rhs = Expr(2);
auto* body = create<ast::BlockStatement>(ast::StatementList{
create<ast::AssignmentStatement>(lhs, rhs),
});
WrapInFunction(body);
EXPECT_FALSE(r()->Resolve());
EXPECT_EQ(r()->error(),
"12:34 error: v-0006: identifier must be declared before use: b");
}
TEST_F(ResolverValidationTest, StorageClass_NonFunctionClassError) {
auto* var = Var("var", ty.i32(), ast::StorageClass::kWorkgroup);
auto* stmt = create<ast::VariableDeclStatement>(var);
Func("func", ast::VariableList{}, ty.i32(), ast::StatementList{stmt},
ast::DecorationList{});
EXPECT_FALSE(r()->Resolve());
EXPECT_EQ(r()->error(),
"error: function variable has a non-function storage class");
}
TEST_F(ResolverValidationTest, Expr_MemberAccessor_VectorSwizzle_BadChar) {
Global("my_vec", ty.vec3<f32>(), ast::StorageClass::kNone);
auto* ident = create<ast::IdentifierExpression>(
Source{{Source::Location{3, 3}, Source::Location{3, 7}}},
Symbols().Register("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.vec3<f32>(), ast::StorageClass::kNone);
auto* ident = create<ast::IdentifierExpression>(
Source{{Source::Location{3, 3}, Source::Location{3, 7}}},
Symbols().Register("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::kNone);
auto* ident = create<ast::IdentifierExpression>(
Source{{Source::Location{3, 3}, Source::Location{3, 8}}},
Symbols().Register("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,
Stmt_Loop_ContinueInLoopBodyBeforeDecl_UsageInContinuing) {
// loop {
// continue; // Bypasses z decl
// var z : i32;
//
// continuing {
// z = 2;
// }
// }
auto error_loc = Source{Source::Location{12, 34}};
auto* body = Block(create<ast::ContinueStatement>(),
Decl(Var("z", ty.i32(), ast::StorageClass::kNone)));
auto* continuing = Block(Assign(Expr(error_loc, "z"), Expr(2)));
auto* loop_stmt = Loop(body, continuing);
WrapInFunction(loop_stmt);
EXPECT_FALSE(r()->Resolve()) << r()->error();
EXPECT_EQ(r()->error(),
"12:34 error: continue statement bypasses declaration of 'z' in "
"continuing block");
}
TEST_F(ResolverValidationTest,
Stmt_Loop_ContinueInLoopBodyBeforeDeclAndAfterDecl_UsageInContinuing) {
// loop {
// continue; // Bypasses z decl
// var z : i32;
// continue; // Ok
//
// continuing {
// z = 2;
// }
// }
auto error_loc = Source{Source::Location{12, 34}};
auto* body = Block(create<ast::ContinueStatement>(),
Decl(Var("z", ty.i32(), ast::StorageClass::kNone)),
create<ast::ContinueStatement>());
auto* continuing = Block(Assign(Expr(error_loc, "z"), Expr(2)));
auto* loop_stmt = Loop(body, continuing);
WrapInFunction(loop_stmt);
EXPECT_FALSE(r()->Resolve()) << r()->error();
EXPECT_EQ(r()->error(),
"12:34 error: continue statement bypasses declaration of 'z' in "
"continuing block");
}
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 error_loc = Source{Source::Location{12, 34}};
auto* body = Block(If(Expr(true), Block(create<ast::ContinueStatement>())),
Decl(Var("z", ty.i32(), ast::StorageClass::kNone)));
auto* continuing = Block(Assign(Expr(error_loc, "z"), Expr(2)));
auto* loop_stmt = Loop(body, continuing);
WrapInFunction(loop_stmt);
EXPECT_FALSE(r()->Resolve()) << r()->error();
EXPECT_EQ(r()->error(),
"12:34 error: continue statement bypasses declaration of 'z' in "
"continuing block");
}
TEST_F(
ResolverTest,
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 error_loc = Source{Source::Location{12, 34}};
auto* body = Block(If(Expr(true), Block(create<ast::ContinueStatement>())),
Decl(Var("z", ty.i32(), ast::StorageClass::kNone)));
auto* continuing =
Block(If(Expr(true), Block(Assign(Expr(error_loc, "z"), Expr(2)))));
auto* loop_stmt = Loop(body, continuing);
WrapInFunction(loop_stmt);
EXPECT_FALSE(r()->Resolve()) << r()->error();
EXPECT_EQ(r()->error(),
"12:34 error: continue statement bypasses declaration of 'z' in "
"continuing block");
}
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 error_loc = Source{Source::Location{12, 34}};
auto* body = Block(If(Expr(true), Block(create<ast::ContinueStatement>())),
Decl(Var("z", ty.i32(), ast::StorageClass::kNone)));
auto* continuing = Block(Loop(Block(Assign(Expr(error_loc, "z"), Expr(2)))));
auto* loop_stmt = Loop(body, continuing);
WrapInFunction(loop_stmt);
EXPECT_FALSE(r()->Resolve()) << r()->error();
EXPECT_EQ(r()->error(),
"12:34 error: continue statement bypasses declaration of 'z' in "
"continuing block");
}
TEST_F(ResolverValidationTest,
Stmt_Loop_ContinueInNestedLoopBodyBeforeDecl_UsageInContinuing) {
// loop {
// loop {
// continue; // OK: not part of the outer loop
// }
// var z : i32;
//
// continuing {
// z = 2;
// }
// }
auto* inner_loop = Loop(Block(create<ast::ContinueStatement>()));
auto* body =
Block(inner_loop, Decl(Var("z", ty.i32(), ast::StorageClass::kNone)));
auto* continuing = Block(Assign(Expr("z"), Expr(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 {
// continue; // OK: not part of the outer loop
// }
// var z : i32;
//
// continuing {
// if (true) {
// z = 2;
// }
// }
// }
auto* inner_loop = Loop(Block(create<ast::ContinueStatement>()));
auto* body =
Block(inner_loop, Decl(Var("z", ty.i32(), ast::StorageClass::kNone)));
auto* continuing = Block(If(Expr(true), Block(Assign(Expr("z"), Expr(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 {
// continue; // OK: not part of the outer loop
// }
// var z : i32;
//
// continuing {
// loop {
// z = 2;
// }
// }
// }
auto* inner_loop = Loop(Block(create<ast::ContinueStatement>()));
auto* body =
Block(inner_loop, Decl(Var("z", ty.i32(), ast::StorageClass::kNone)));
auto* continuing = Block(Loop(Block(Assign(Expr("z"), Expr(2)))));
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;
// continue;
//
// continuing {
// z = 2;
// }
// }
auto error_loc = Source{Source::Location{12, 34}};
auto* body = Block(Decl(Var("z", ty.i32(), ast::StorageClass::kNone)),
create<ast::ContinueStatement>());
auto* continuing = Block(Assign(Expr(error_loc, "z"), Expr(2)));
auto* loop_stmt = Loop(body, continuing);
WrapInFunction(loop_stmt);
EXPECT_TRUE(r()->Resolve());
}
TEST_F(ResolverValidationTest, Stmt_ContinueInLoop) {
WrapInFunction(Loop(Block(create<ast::ContinueStatement>(Source{{12, 34}}))));
EXPECT_TRUE(r()->Resolve()) << r()->error();
}
TEST_F(ResolverValidationTest, Stmt_ContinueNotInLoop) {
WrapInFunction(create<ast::ContinueStatement>(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(create<ast::BreakStatement>(Source{{12, 34}}))));
EXPECT_TRUE(r()->Resolve()) << r()->error();
}
TEST_F(ResolverValidationTest, Stmt_BreakInSwitch) {
WrapInFunction(Loop(Block(create<ast::SwitchStatement>(
Expr(1), ast::CaseStatementList{
create<ast::CaseStatement>(
ast::CaseSelectorList{Literal(1)},
Block(create<ast::BreakStatement>(Source{{12, 34}}))),
}))));
EXPECT_TRUE(r()->Resolve()) << r()->error();
}
TEST_F(ResolverValidationTest, Stmt_BreakNotInLoopOrSwitch) {
WrapInFunction(create<ast::BreakStatement>(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, NonPOTStructMemberAlignDecoration) {
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, ZeroStructMemberAlignDecoration) {
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, ZeroStructMemberSizeDecoration) {
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)");
}
} // namespace
} // namespace resolver
} // namespace tint
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