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786bc92002
`expect_block()` takes a start and end token, along with a function to parse a lexical block body. This reduces code, keeps error messages consistent, and also gives us a future place to try resynchronising the parser so we can have more than one error emitted. `expect_paren_block()` and `expect_brace_block()` are convenience helpers for providing the start and end tokens for common block types. Bug: tint:282 Change-Id: I432a0301727b131a6fce875687b952dfc6889a4b Reviewed-on: https://dawn-review.googlesource.com/c/tint/+/31736 Commit-Queue: Ben Clayton <bclayton@google.com> Reviewed-by: dan sinclair <dsinclair@chromium.org>
128 lines
3.7 KiB
C++
128 lines
3.7 KiB
C++
// Copyright 2020 The Tint Authors.
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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#include "gtest/gtest.h"
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#include "src/ast/type/struct_type.h"
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#include "src/reader/wgsl/parser_impl.h"
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#include "src/reader/wgsl/parser_impl_test_helper.h"
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namespace tint {
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namespace reader {
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namespace wgsl {
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namespace {
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TEST_F(ParserImplTest, StructDecl_Parses) {
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auto* p = parser(R"(
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struct S {
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a : i32;
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[[offset(4)]] b : f32;
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})");
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auto s = p->struct_decl();
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ASSERT_FALSE(p->has_error());
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ASSERT_NE(s, nullptr);
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ASSERT_EQ(s->name(), "S");
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ASSERT_EQ(s->impl()->members().size(), 2u);
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EXPECT_EQ(s->impl()->members()[0]->name(), "a");
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EXPECT_EQ(s->impl()->members()[1]->name(), "b");
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}
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TEST_F(ParserImplTest, StructDecl_ParsesWithDecoration) {
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auto* p = parser(R"(
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[[block]] struct B {
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a : f32;
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b : f32;
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})");
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auto s = p->struct_decl();
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ASSERT_FALSE(p->has_error());
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ASSERT_NE(s, nullptr);
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ASSERT_EQ(s->name(), "B");
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ASSERT_EQ(s->impl()->members().size(), 2u);
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EXPECT_EQ(s->impl()->members()[0]->name(), "a");
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EXPECT_EQ(s->impl()->members()[1]->name(), "b");
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ASSERT_EQ(s->impl()->decorations().size(), 1u);
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EXPECT_TRUE(s->impl()->decorations()[0]->IsBlock());
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}
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TEST_F(ParserImplTest, StructDecl_ParsesWithMultipleDecoration) {
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auto* p = parser(R"(
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[[block]]
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[[block]] struct S {
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a : f32;
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b : f32;
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})");
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auto s = p->struct_decl();
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ASSERT_FALSE(p->has_error());
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ASSERT_NE(s, nullptr);
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ASSERT_EQ(s->name(), "S");
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ASSERT_EQ(s->impl()->members().size(), 2u);
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EXPECT_EQ(s->impl()->members()[0]->name(), "a");
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EXPECT_EQ(s->impl()->members()[1]->name(), "b");
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ASSERT_EQ(s->impl()->decorations().size(), 2u);
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EXPECT_TRUE(s->impl()->decorations()[0]->IsBlock());
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EXPECT_TRUE(s->impl()->decorations()[1]->IsBlock());
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}
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TEST_F(ParserImplTest, StructDecl_EmptyMembers) {
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auto* p = parser("struct S {}");
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auto s = p->struct_decl();
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ASSERT_FALSE(p->has_error());
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ASSERT_NE(s, nullptr);
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ASSERT_EQ(s->impl()->members().size(), 0u);
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}
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TEST_F(ParserImplTest, StructDecl_MissingIdent) {
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auto* p = parser("struct {}");
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auto s = p->struct_decl();
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ASSERT_TRUE(p->has_error());
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ASSERT_EQ(s, nullptr);
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EXPECT_EQ(p->error(), "1:8: expected identifier for struct declaration");
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}
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TEST_F(ParserImplTest, StructDecl_MissingBracketLeft) {
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auto* p = parser("struct S }");
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auto s = p->struct_decl();
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ASSERT_TRUE(p->has_error());
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ASSERT_EQ(s, nullptr);
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EXPECT_EQ(p->error(), "1:10: expected '{' for struct declaration");
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}
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TEST_F(ParserImplTest, StructDecl_InvalidStructBody) {
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auto* p = parser("struct S { a : B; }");
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auto s = p->struct_decl();
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ASSERT_TRUE(p->has_error());
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ASSERT_EQ(s, nullptr);
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EXPECT_EQ(p->error(), "1:16: unknown constructed type 'B'");
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}
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TEST_F(ParserImplTest, StructDecl_InvalidStructDecorationDecl) {
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auto* p = parser("[[block struct S { a : i32; }");
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auto s = p->struct_decl();
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ASSERT_TRUE(p->has_error());
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ASSERT_EQ(s, nullptr);
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EXPECT_EQ(p->error(), "1:9: missing ]] for struct decoration");
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}
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TEST_F(ParserImplTest, StructDecl_MissingStruct) {
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auto* p = parser("[[block]] S {}");
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auto s = p->struct_decl();
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ASSERT_TRUE(p->has_error());
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ASSERT_EQ(s, nullptr);
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EXPECT_EQ(p->error(), "1:11: missing struct declaration");
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}
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} // namespace
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} // namespace wgsl
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} // namespace reader
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} // namespace tint
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