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dawn-cmake/src/tint/reader/wgsl/parser_impl_global_decl_test.cc
Ben Clayton b75252b7aa tint/ast: Change TypeDecl::name to an ast::Identifier. 
The goal here is to have all AST nodes use an identifier instead of
symbols directly. This will greatly simplify the renamer transform,
and gives the symbol a Source location, which is helpful for
diagnostics and tooling.

Change-Id: I8b3e05d05886c6caa16513a5cfb45d30f7a8d720
Reviewed-on: https://dawn-review.googlesource.com/c/dawn/+/119283
Reviewed-by: Dan Sinclair <dsinclair@chromium.org>
Kokoro: Ben Clayton <bclayton@google.com>
2023-02-09 10:34:14 +00:00

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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/tint/reader/wgsl/parser_impl_test_helper.h"
namespace tint::reader::wgsl {
namespace {
TEST_F(ParserImplTest, GlobalDecl_Semicolon) {
auto p = parser(";");
p->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->global_decl();
ASSERT_FALSE(p->has_error()) << p->error();
auto program = p->program();
ASSERT_EQ(program.AST().GlobalVariables().Length(), 1u);
auto* v = program.AST().GlobalVariables()[0];
EXPECT_EQ(v->name->symbol, program.Symbols().Get("a"));
EXPECT_TRUE(Is<ast::Vector>(v->type));
}
TEST_F(ParserImplTest, GlobalDecl_GlobalVariable_Inferred) {
auto p = parser("var<private> a = vec2<i32>(1, 2);");
p->global_decl();
ASSERT_FALSE(p->has_error()) << p->error();
auto program = p->program();
ASSERT_EQ(program.AST().GlobalVariables().Length(), 1u);
auto* v = program.AST().GlobalVariables()[0];
EXPECT_EQ(v->name->symbol, program.Symbols().Get("a"));
EXPECT_EQ(v->type, nullptr);
}
TEST_F(ParserImplTest, GlobalDecl_GlobalVariable_MissingSemicolon) {
auto p = parser("var<private> a : vec2<i32>");
p->global_decl();
ASSERT_TRUE(p->has_error());
EXPECT_EQ(p->error(), "1:27: expected ';' for variable declaration");
}
TEST_F(ParserImplTest, GlobalDecl_GlobalLet) {
auto p = parser("let a : i32 = 2;");
auto e = p->global_decl();
EXPECT_TRUE(p->has_error());
EXPECT_FALSE(e.matched);
EXPECT_TRUE(e.errored);
EXPECT_EQ(p->error(), "1:1: module-scope 'let' is invalid, use 'const'");
}
TEST_F(ParserImplTest, GlobalDecl_GlobalConst) {
auto p = parser("const a : i32 = 2;");
p->global_decl();
ASSERT_FALSE(p->has_error()) << p->error();
auto program = p->program();
ASSERT_EQ(program.AST().GlobalVariables().Length(), 1u);
auto* v = program.AST().GlobalVariables()[0];
EXPECT_EQ(v->name->symbol, program.Symbols().Get("a"));
}
TEST_F(ParserImplTest, GlobalDecl_GlobalConst_MissingInitializer) {
auto p = parser("const a : vec2<i32>;");
p->global_decl();
ASSERT_TRUE(p->has_error());
EXPECT_EQ(p->error(), "1:20: expected '=' for 'const' declaration");
}
TEST_F(ParserImplTest, GlobalDecl_GlobalConst_Invalid) {
auto p = parser("const a : vec2<i32> 1.0;");
p->global_decl();
ASSERT_TRUE(p->has_error());
EXPECT_EQ(p->error(), "1:21: expected '=' for 'const' declaration");
}
TEST_F(ParserImplTest, GlobalDecl_GlobalConst_MissingSemicolon) {
auto p = parser("const a : vec2<i32> = vec2<i32>(1, 2)");
p->global_decl();
ASSERT_TRUE(p->has_error());
EXPECT_EQ(p->error(), "1:38: expected ';' for 'const' declaration");
}
TEST_F(ParserImplTest, GlobalDecl_TypeAlias) {
auto p = parser("alias A = i32;");
p->global_decl();
ASSERT_FALSE(p->has_error()) << p->error();
auto program = p->program();
ASSERT_EQ(program.AST().TypeDecls().Length(), 1u);
ASSERT_TRUE(program.AST().TypeDecls()[0]->Is<ast::Alias>());
EXPECT_EQ(
program.Symbols().NameFor(program.AST().TypeDecls()[0]->As<ast::Alias>()->name->symbol),
"A");
}
TEST_F(ParserImplTest, GlobalDecl_TypeAlias_StructIdent) {
auto p = parser(R"(struct A {
a : f32,
}
alias B = A;)");
p->global_decl();
p->global_decl();
ASSERT_FALSE(p->has_error()) << p->error();
auto program = p->program();
ASSERT_EQ(program.AST().TypeDecls().Length(), 2u);
ASSERT_TRUE(program.AST().TypeDecls()[0]->Is<ast::Struct>());
auto* str = program.AST().TypeDecls()[0]->As<ast::Struct>();
EXPECT_EQ(str->name->symbol, 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->name->symbol, program.Symbols().Get("B"));
auto* tn = alias->type->As<ast::TypeName>();
EXPECT_NE(tn, nullptr);
EXPECT_EQ(tn->name->symbol, str->name->symbol);
}
// TODO(crbug.com/tint/1812): DEPRECATED
TEST_F(ParserImplTest, DEPRECATED_GlobalDecl_TypeAlias) {
auto p = parser("type A = i32;");
p->global_decl();
ASSERT_FALSE(p->has_error()) << p->error();
auto program = p->program();
ASSERT_EQ(program.AST().TypeDecls().Length(), 1u);
ASSERT_TRUE(program.AST().TypeDecls()[0]->Is<ast::Alias>());
EXPECT_EQ(
program.Symbols().NameFor(program.AST().TypeDecls()[0]->As<ast::Alias>()->name->symbol),
"A");
}
// TODO(crbug.com/tint/1812): DEPRECATED
TEST_F(ParserImplTest, DEPRECATED_GlobalDecl_TypeAlias_StructIdent) {
auto p = parser(R"(struct A {
a : f32,
}
type B = A;)");
p->global_decl();
p->global_decl();
ASSERT_FALSE(p->has_error()) << p->error();
auto program = p->program();
ASSERT_EQ(program.AST().TypeDecls().Length(), 2u);
ASSERT_TRUE(program.AST().TypeDecls()[0]->Is<ast::Struct>());
auto* str = program.AST().TypeDecls()[0]->As<ast::Struct>();
EXPECT_EQ(str->name->symbol, 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->name->symbol, program.Symbols().Get("B"));
auto* tn = alias->type->As<ast::TypeName>();
EXPECT_NE(tn, nullptr);
EXPECT_EQ(tn->name->symbol, str->name->symbol);
}
TEST_F(ParserImplTest, GlobalDecl_TypeAlias_MissingSemicolon) {
auto p = parser("alias A = i32");
p->global_decl();
ASSERT_TRUE(p->has_error());
EXPECT_EQ(p->error(), "1:14: expected ';' for type alias");
}
// TODO(crbug.com/tint/1812): DEPRECATED
TEST_F(ParserImplTest, DEPRECATED_GlobalDecl_TypeAlias_MissingSemicolon) {
auto p = parser("type A = i32");
p->global_decl();
ASSERT_TRUE(p->has_error());
EXPECT_EQ(p->error(),
R"(1:1: use of deprecated language feature: 'type' has been renamed to 'alias'
1:13: expected ';' for type alias)");
}
TEST_F(ParserImplTest, GlobalDecl_Function) {
auto p = parser("fn main() { return; }");
p->global_decl();
ASSERT_FALSE(p->has_error()) << p->error();
auto program = p->program();
ASSERT_EQ(program.AST().Functions().Length(), 1u);
EXPECT_EQ(program.Symbols().NameFor(program.AST().Functions()[0]->name->symbol), "main");
}
TEST_F(ParserImplTest, GlobalDecl_Function_WithAttribute) {
auto p = parser("@workgroup_size(2) fn main() { return; }");
p->global_decl();
ASSERT_FALSE(p->has_error()) << p->error();
auto program = p->program();
ASSERT_EQ(program.AST().Functions().Length(), 1u);
EXPECT_EQ(program.Symbols().NameFor(program.AST().Functions()[0]->name->symbol), "main");
}
TEST_F(ParserImplTest, GlobalDecl_Function_Invalid) {
auto p = parser("fn main() -> { return; }");
p->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->global_decl();
ASSERT_FALSE(p->has_error()) << p->error();
auto program = p->program();
ASSERT_EQ(program.AST().TypeDecls().Length(), 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->symbol, program.Symbols().Get("A"));
EXPECT_EQ(str->members.Length(), 2u);
}
TEST_F(ParserImplTest, GlobalDecl_Struct_Invalid) {
{
auto p = parser("A {}");
auto decl = p->global_decl();
// global_decl will result in a no match.
ASSERT_FALSE(p->has_error()) << p->error();
ASSERT_TRUE(!decl.matched && !decl.errored);
}
{
auto p = parser("A {}");
p->translation_unit();
// translation_unit will result in a general error.
ASSERT_TRUE(p->has_error());
EXPECT_EQ(p->error(), "1:1: unexpected token");
}
}
TEST_F(ParserImplTest, GlobalDecl_Struct_UnexpectedAttribute) {
auto p = parser("@vertex struct S { i : i32 }");
auto s = p->global_decl();
EXPECT_TRUE(s.errored);
EXPECT_FALSE(s.matched);
EXPECT_TRUE(p->has_error());
EXPECT_EQ(p->error(), "1:2: unexpected attributes");
}
TEST_F(ParserImplTest, GlobalDecl_ConstAssert_WithParen) {
auto p = parser("const_assert(true);");
p->global_decl();
ASSERT_FALSE(p->has_error()) << p->error();
auto program = p->program();
ASSERT_EQ(program.AST().ConstAsserts().Length(), 1u);
auto* sa = program.AST().ConstAsserts()[0];
EXPECT_EQ(sa->source.range.begin.line, 1u);
EXPECT_EQ(sa->source.range.begin.column, 1u);
EXPECT_EQ(sa->source.range.end.line, 1u);
EXPECT_EQ(sa->source.range.end.column, 19u);
EXPECT_TRUE(sa->condition->Is<ast::BoolLiteralExpression>());
EXPECT_EQ(sa->condition->source.range.begin.line, 1u);
EXPECT_EQ(sa->condition->source.range.begin.column, 14u);
EXPECT_EQ(sa->condition->source.range.end.line, 1u);
EXPECT_EQ(sa->condition->source.range.end.column, 18u);
}
TEST_F(ParserImplTest, GlobalDecl_ConstAssert_WithoutParen) {
auto p = parser("const_assert true;");
p->global_decl();
ASSERT_FALSE(p->has_error()) << p->error();
auto program = p->program();
ASSERT_EQ(program.AST().ConstAsserts().Length(), 1u);
auto* sa = program.AST().ConstAsserts()[0];
EXPECT_TRUE(sa->condition->Is<ast::BoolLiteralExpression>());
EXPECT_EQ(sa->source.range.begin.line, 1u);
EXPECT_EQ(sa->source.range.begin.column, 1u);
EXPECT_EQ(sa->source.range.end.line, 1u);
EXPECT_EQ(sa->source.range.end.column, 19u);
EXPECT_TRUE(sa->condition->Is<ast::BoolLiteralExpression>());
EXPECT_EQ(sa->condition->source.range.begin.line, 1u);
EXPECT_EQ(sa->condition->source.range.begin.column, 15u);
EXPECT_EQ(sa->condition->source.range.end.line, 1u);
EXPECT_EQ(sa->condition->source.range.end.column, 19u);
}
// TODO(crbug.com/tint/1807)
TEST_F(ParserImplTest, DEPRECATED_GlobalDecl_StaticAssert_WithParen) {
auto p = parser("static_assert(true);");
p->global_decl();
ASSERT_FALSE(p->has_error()) << p->error();
auto program = p->program();
ASSERT_EQ(program.AST().ConstAsserts().Length(), 1u);
auto* sa = program.AST().ConstAsserts()[0];
EXPECT_EQ(sa->source.range.begin.line, 1u);
EXPECT_EQ(sa->source.range.begin.column, 1u);
EXPECT_EQ(sa->source.range.end.line, 1u);
EXPECT_EQ(sa->source.range.end.column, 20u);
EXPECT_TRUE(sa->condition->Is<ast::BoolLiteralExpression>());
EXPECT_EQ(sa->condition->source.range.begin.line, 1u);
EXPECT_EQ(sa->condition->source.range.begin.column, 15u);
EXPECT_EQ(sa->condition->source.range.end.line, 1u);
EXPECT_EQ(sa->condition->source.range.end.column, 19u);
}
// TODO(crbug.com/tint/1807)
TEST_F(ParserImplTest, DEPRECATED_GlobalDecl_StaticAssert_WithoutParen) {
auto p = parser("static_assert true;");
p->global_decl();
ASSERT_FALSE(p->has_error()) << p->error();
auto program = p->program();
ASSERT_EQ(program.AST().ConstAsserts().Length(), 1u);
auto* sa = program.AST().ConstAsserts()[0];
EXPECT_TRUE(sa->condition->Is<ast::BoolLiteralExpression>());
EXPECT_EQ(sa->source.range.begin.line, 1u);
EXPECT_EQ(sa->source.range.begin.column, 1u);
EXPECT_EQ(sa->source.range.end.line, 1u);
EXPECT_EQ(sa->source.range.end.column, 20u);
EXPECT_TRUE(sa->condition->Is<ast::BoolLiteralExpression>());
EXPECT_EQ(sa->condition->source.range.begin.line, 1u);
EXPECT_EQ(sa->condition->source.range.begin.column, 16u);
EXPECT_EQ(sa->condition->source.range.end.line, 1u);
EXPECT_EQ(sa->condition->source.range.end.column, 20u);
}
} // namespace
} // namespace tint::reader::wgsl
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