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// Copyright 2020 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/reader/wgsl/parser_impl_test_helper.h"
namespace tint {
namespace reader {
namespace wgsl {
namespace {
TEST_F(ParserImplTest, GlobalDecl_Semicolon) {
auto p = parser(";");
p->expect_global_decl();
ASSERT_FALSE(p->has_error()) << p->error();
}
TEST_F(ParserImplTest, GlobalDecl_GlobalVariable) {
auto p = parser("var<private> a : vec2<i32> = vec2<i32>(1, 2);");
p->expect_global_decl();
ASSERT_FALSE(p->has_error()) << p->error();
auto program = p->program();
ASSERT_EQ(program.AST().GlobalVariables().size(), 1u);
auto* v = program.AST().GlobalVariables()[0];
EXPECT_EQ(v->symbol(), program.Symbols().Get("a"));
}
TEST_F(ParserImplTest, GlobalDecl_GlobalVariable_Inferred_Invalid) {
auto p = parser("var<private> a = vec2<i32>(1, 2);");
p->expect_global_decl();
ASSERT_TRUE(p->has_error());
EXPECT_EQ(p->error(), "1:16: expected ':' for variable declaration");
}
TEST_F(ParserImplTest, GlobalDecl_GlobalVariable_Invalid) {
auto p = parser("var<private> a : vec2<invalid>;");
p->expect_global_decl();
ASSERT_TRUE(p->has_error());
EXPECT_EQ(p->error(), "1:23: unknown type 'invalid'");
}
TEST_F(ParserImplTest, GlobalDecl_GlobalVariable_MissingSemicolon) {
auto p = parser("var<private> a : vec2<i32>");
p->expect_global_decl();
ASSERT_TRUE(p->has_error());
EXPECT_EQ(p->error(), "1:27: expected ';' for variable declaration");
}
TEST_F(ParserImplTest, GlobalDecl_GlobalConstant) {
auto p = parser("let a : i32 = 2;");
p->expect_global_decl();
ASSERT_FALSE(p->has_error()) << p->error();
auto program = p->program();
ASSERT_EQ(program.AST().GlobalVariables().size(), 1u);
auto* v = program.AST().GlobalVariables()[0];
EXPECT_EQ(v->symbol(), program.Symbols().Get("a"));
}
TEST_F(ParserImplTest, GlobalDecl_GlobalConstant_Invalid) {
auto p = parser("let a : vec2<i32> 1.0;");
p->expect_global_decl();
ASSERT_TRUE(p->has_error());
EXPECT_EQ(p->error(), "1:19: expected ';' for let declaration");
}
TEST_F(ParserImplTest, GlobalDecl_GlobalConstant_MissingSemicolon) {
auto p = parser("let a : vec2<i32> = vec2<i32>(1, 2)");
p->expect_global_decl();
ASSERT_TRUE(p->has_error());
EXPECT_EQ(p->error(), "1:36: expected ';' for let declaration");
}
TEST_F(ParserImplTest, GlobalDecl_TypeAlias) {
auto p = parser("type A = i32;");
p->expect_global_decl();
ASSERT_FALSE(p->has_error()) << p->error();
auto program = p->program();
ASSERT_EQ(program.AST().TypeDecls().size(), 1u);
ASSERT_TRUE(program.AST().TypeDecls()[0]->Is<ast::Alias>());
EXPECT_EQ(program.Symbols().NameFor(
program.AST().TypeDecls()[0]->As<ast::Alias>()->symbol()),
"A");
}
TEST_F(ParserImplTest, GlobalDecl_TypeAlias_StructIdent) {
auto p = parser(R"(struct A {
a : f32;
};
type B = A;)");
p->expect_global_decl();
p->expect_global_decl();
ASSERT_FALSE(p->has_error()) << p->error();
auto program = p->program();
ASSERT_EQ(program.AST().TypeDecls().size(), 2u);
ASSERT_TRUE(program.AST().TypeDecls()[0]->Is<ast::Struct>());
auto* str = program.AST().TypeDecls()[0]->As<ast::Struct>();
EXPECT_EQ(str->name(), program.Symbols().Get("A"));
ASSERT_TRUE(program.AST().TypeDecls()[1]->Is<ast::Alias>());
auto* alias = program.AST().TypeDecls()[1]->As<ast::Alias>();
EXPECT_EQ(alias->symbol(), program.Symbols().Get("B"));
auto* tn = alias->type()->As<ast::TypeName>();
EXPECT_NE(tn, nullptr);
EXPECT_EQ(tn->name(), str->name());
}
TEST_F(ParserImplTest, GlobalDecl_TypeAlias_Invalid) {
auto p = parser("type A = invalid;");
p->expect_global_decl();
ASSERT_TRUE(p->has_error());
EXPECT_EQ(p->error(), "1:10: unknown type 'invalid'");
}
TEST_F(ParserImplTest, GlobalDecl_TypeAlias_MissingSemicolon) {
auto p = parser("type A = i32");
p->expect_global_decl();
ASSERT_TRUE(p->has_error());
EXPECT_EQ(p->error(), "1:13: expected ';' for type alias");
}
TEST_F(ParserImplTest, GlobalDecl_Function) {
auto p = parser("fn main() { return; }");
p->expect_global_decl();
ASSERT_FALSE(p->has_error()) << p->error();
auto program = p->program();
ASSERT_EQ(program.AST().Functions().size(), 1u);
EXPECT_EQ(program.Symbols().NameFor(program.AST().Functions()[0]->symbol()),
"main");
}
TEST_F(ParserImplTest, GlobalDecl_Function_WithDecoration) {
auto p = parser("[[workgroup_size(2)]] fn main() { return; }");
p->expect_global_decl();
ASSERT_FALSE(p->has_error()) << p->error();
auto program = p->program();
ASSERT_EQ(program.AST().Functions().size(), 1u);
EXPECT_EQ(program.Symbols().NameFor(program.AST().Functions()[0]->symbol()),
"main");
}
TEST_F(ParserImplTest, GlobalDecl_Function_Invalid) {
auto p = parser("fn main() -> { return; }");
p->expect_global_decl();
ASSERT_TRUE(p->has_error());
EXPECT_EQ(p->error(), "1:14: unable to determine function return type");
}
TEST_F(ParserImplTest, GlobalDecl_ParsesStruct) {
auto p = parser("struct A { b: i32; c: f32;};");
p->expect_global_decl();
ASSERT_FALSE(p->has_error()) << p->error();
auto program = p->program();
ASSERT_EQ(program.AST().TypeDecls().size(), 1u);
auto* t = program.AST().TypeDecls()[0];
ASSERT_NE(t, nullptr);
ASSERT_TRUE(t->Is<ast::Struct>());
auto* str = t->As<ast::Struct>();
EXPECT_EQ(str->name(), program.Symbols().Get("A"));
EXPECT_EQ(str->members().size(), 2u);
}
TEST_F(ParserImplTest, GlobalDecl_Struct_WithStride) {
auto p = parser("struct A { data: [[stride(4)]] array<f32>; };");
p->expect_global_decl();
ASSERT_FALSE(p->has_error()) << p->error();
auto program = p->program();
ASSERT_EQ(program.AST().TypeDecls().size(), 1u);
auto* t = program.AST().TypeDecls()[0];
ASSERT_NE(t, nullptr);
ASSERT_TRUE(t->Is<ast::Struct>());
auto* str = t->As<ast::Struct>();
EXPECT_EQ(str->name(), program.Symbols().Get("A"));
EXPECT_EQ(str->members().size(), 1u);
EXPECT_FALSE(str->IsBlockDecorated());
const auto* ty = str->members()[0]->type();
ASSERT_TRUE(ty->Is<ast::Array>());
const auto* arr = ty->As<ast::Array>();
ASSERT_EQ(arr->decorations().size(), 1u);
auto* stride = arr->decorations()[0];
ASSERT_TRUE(stride->Is<ast::StrideDecoration>());
ASSERT_EQ(stride->As<ast::StrideDecoration>()->stride(), 4u);
}
TEST_F(ParserImplTest, GlobalDecl_Struct_WithDecoration) {
auto p = parser("[[block]] struct A { data: f32; };");
p->expect_global_decl();
ASSERT_FALSE(p->has_error()) << p->error();
auto program = p->program();
ASSERT_EQ(program.AST().TypeDecls().size(), 1u);
auto* t = program.AST().TypeDecls()[0];
ASSERT_NE(t, nullptr);
ASSERT_TRUE(t->Is<ast::Struct>());
auto* str = t->As<ast::Struct>();
EXPECT_EQ(str->name(), program.Symbols().Get("A"));
EXPECT_EQ(str->members().size(), 1u);
EXPECT_TRUE(str->IsBlockDecorated());
}
TEST_F(ParserImplTest, GlobalDecl_Struct_Invalid) {
auto p = parser("[[block]] A {};");
p->expect_global_decl();
ASSERT_TRUE(p->has_error());
EXPECT_EQ(p->error(), "1:11: expected declaration after decorations");
}
TEST_F(ParserImplTest, GlobalDecl_StructMissing_Semi) {
auto p = parser("[[block]] struct A {}");
p->expect_global_decl();
ASSERT_TRUE(p->has_error());
EXPECT_EQ(p->error(), "1:22: expected ';' for struct declaration");
}
} // namespace
} // namespace wgsl
} // namespace reader
} // namespace tint