| // 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/lexer.h" |
| |
| #include <limits> |
| |
| #include "gtest/gtest.h" |
| |
| namespace tint { |
| namespace reader { |
| namespace wgsl { |
| namespace { |
| |
| using LexerTest = testing::Test; |
| |
| TEST_F(LexerTest, Empty) { |
| Lexer l(""); |
| auto t = l.next(); |
| EXPECT_TRUE(t.IsEof()); |
| } |
| |
| TEST_F(LexerTest, Skips_Whitespace) { |
| Lexer l("\t\r\n\t ident\t\n\t \r "); |
| |
| auto t = l.next(); |
| EXPECT_TRUE(t.IsIdentifier()); |
| EXPECT_EQ(t.line(), 2u); |
| EXPECT_EQ(t.column(), 6u); |
| EXPECT_EQ(t.to_str(), "ident"); |
| |
| t = l.next(); |
| EXPECT_TRUE(t.IsEof()); |
| } |
| |
| TEST_F(LexerTest, Skips_Comments) { |
| Lexer l(R"(#starts with comment |
| ident1 #ends with comment |
| # blank line |
| ident2)"); |
| |
| auto t = l.next(); |
| EXPECT_TRUE(t.IsIdentifier()); |
| EXPECT_EQ(t.line(), 2u); |
| EXPECT_EQ(t.column(), 1u); |
| EXPECT_EQ(t.to_str(), "ident1"); |
| |
| t = l.next(); |
| EXPECT_TRUE(t.IsIdentifier()); |
| EXPECT_EQ(t.line(), 4u); |
| EXPECT_EQ(t.column(), 2u); |
| EXPECT_EQ(t.to_str(), "ident2"); |
| |
| t = l.next(); |
| EXPECT_TRUE(t.IsEof()); |
| } |
| |
| TEST_F(LexerTest, StringTest_Parse) { |
| Lexer l(R"(id "this is string content" id2)"); |
| |
| auto t = l.next(); |
| EXPECT_TRUE(t.IsIdentifier()); |
| EXPECT_EQ(t.to_str(), "id"); |
| EXPECT_EQ(1u, t.line()); |
| EXPECT_EQ(1u, t.column()); |
| |
| t = l.next(); |
| EXPECT_TRUE(t.IsStringLiteral()); |
| EXPECT_EQ(t.to_str(), "this is string content"); |
| EXPECT_EQ(1u, t.line()); |
| EXPECT_EQ(4u, t.column()); |
| |
| t = l.next(); |
| EXPECT_TRUE(t.IsIdentifier()); |
| EXPECT_EQ(t.to_str(), "id2"); |
| EXPECT_EQ(1u, t.line()); |
| EXPECT_EQ(29u, t.column()); |
| } |
| |
| TEST_F(LexerTest, StringTest_Unterminated) { |
| Lexer l(R"(id "this is string content)"); |
| |
| auto t = l.next(); |
| EXPECT_TRUE(t.IsIdentifier()); |
| EXPECT_EQ(t.to_str(), "id"); |
| EXPECT_EQ(1u, t.line()); |
| EXPECT_EQ(1u, t.column()); |
| |
| t = l.next(); |
| EXPECT_TRUE(t.IsStringLiteral()); |
| EXPECT_EQ(t.to_str(), "this is string content"); |
| |
| t = l.next(); |
| EXPECT_TRUE(t.IsEof()); |
| } |
| |
| struct FloatData { |
| const char* input; |
| float result; |
| }; |
| inline std::ostream& operator<<(std::ostream& out, FloatData data) { |
| out << std::string(data.input); |
| return out; |
| } |
| using FloatTest = testing::TestWithParam<FloatData>; |
| TEST_P(FloatTest, Parse) { |
| auto params = GetParam(); |
| Lexer l(std::string(params.input)); |
| |
| auto t = l.next(); |
| EXPECT_TRUE(t.IsFloatLiteral()); |
| EXPECT_EQ(t.to_f32(), params.result); |
| EXPECT_EQ(1u, t.line()); |
| EXPECT_EQ(1u, t.column()); |
| |
| t = l.next(); |
| EXPECT_TRUE(t.IsEof()); |
| } |
| INSTANTIATE_TEST_SUITE_P(LexerTest, |
| FloatTest, |
| testing::Values(FloatData{"0.0", 0.0f}, |
| FloatData{"0.", 0.0f}, |
| FloatData{".0", 0.0f}, |
| FloatData{"5.7", 5.7f}, |
| FloatData{"5.", 5.f}, |
| FloatData{".7", .7f}, |
| FloatData{"-0.0", 0.0f}, |
| FloatData{"-.0", 0.0f}, |
| FloatData{"-0.", 0.0f}, |
| FloatData{"-5.7", -5.7f}, |
| FloatData{"-5.", -5.f}, |
| FloatData{"-.7", -.7f}, |
| FloatData{"0.2e+12", 0.2e12f}, |
| FloatData{"1.2e-5", 1.2e-5f}, |
| FloatData{"2.57e23", 2.57e23f}, |
| FloatData{"2.5e+0", 2.5f}, |
| FloatData{"2.5e-0", 2.5f})); |
| |
| using FloatTest_Invalid = testing::TestWithParam<const char*>; |
| TEST_P(FloatTest_Invalid, Handles) { |
| Lexer l(GetParam()); |
| |
| auto t = l.next(); |
| EXPECT_FALSE(t.IsFloatLiteral()); |
| } |
| INSTANTIATE_TEST_SUITE_P(LexerTest, |
| FloatTest_Invalid, |
| testing::Values(".", |
| "-.", |
| "2.5e+256", |
| "-2.5e+127", |
| "2.5e-300", |
| "2.5e 12", |
| "2.5e+ 123")); |
| |
| using IdentifierTest = testing::TestWithParam<const char*>; |
| TEST_P(IdentifierTest, Parse) { |
| Lexer l(GetParam()); |
| |
| auto t = l.next(); |
| EXPECT_TRUE(t.IsIdentifier()); |
| EXPECT_EQ(t.line(), 1u); |
| EXPECT_EQ(t.column(), 1u); |
| EXPECT_EQ(t.to_str(), GetParam()); |
| } |
| INSTANTIATE_TEST_SUITE_P( |
| LexerTest, |
| IdentifierTest, |
| testing::Values("test01", "_test_", "test_", "_test", "_01", "_test01")); |
| |
| TEST_F(LexerTest, IdentifierTest_DoesNotStartWithNumber) { |
| Lexer l("01test"); |
| |
| auto t = l.next(); |
| EXPECT_FALSE(t.IsIdentifier()); |
| } |
| |
| struct HexSignedIntData { |
| const char* input; |
| int32_t result; |
| }; |
| inline std::ostream& operator<<(std::ostream& out, HexSignedIntData data) { |
| out << std::string(data.input); |
| return out; |
| } |
| |
| using IntegerTest_HexSigned = testing::TestWithParam<HexSignedIntData>; |
| TEST_P(IntegerTest_HexSigned, Matches) { |
| auto params = GetParam(); |
| Lexer l(std::string(params.input)); |
| |
| auto t = l.next(); |
| EXPECT_TRUE(t.IsSintLiteral()); |
| EXPECT_EQ(t.line(), 1u); |
| EXPECT_EQ(t.column(), 1u); |
| EXPECT_EQ(t.to_i32(), params.result); |
| } |
| INSTANTIATE_TEST_SUITE_P( |
| LexerTest, |
| IntegerTest_HexSigned, |
| testing::Values( |
| HexSignedIntData{"0x0", 0}, |
| HexSignedIntData{"0x42", 66}, |
| HexSignedIntData{"-0x42", -66}, |
| HexSignedIntData{"0xeF1Abc9", 250719177}, |
| HexSignedIntData{"-0x80000000", std::numeric_limits<int32_t>::min()}, |
| HexSignedIntData{"0x7FFFFFFF", std::numeric_limits<int32_t>::max()})); |
| |
| TEST_F(LexerTest, IntegerTest_HexSignedTooLarge) { |
| Lexer l("0x80000000"); |
| auto t = l.next(); |
| ASSERT_TRUE(t.IsError()); |
| EXPECT_EQ(t.to_str(), "i32 (0x80000000) too large"); |
| } |
| |
| TEST_F(LexerTest, IntegerTest_HexSignedTooSmall) { |
| Lexer l("-0x8000000F"); |
| auto t = l.next(); |
| ASSERT_TRUE(t.IsError()); |
| EXPECT_EQ(t.to_str(), "i32 (-0x8000000F) too small"); |
| } |
| |
| struct HexUnsignedIntData { |
| const char* input; |
| uint32_t result; |
| }; |
| inline std::ostream& operator<<(std::ostream& out, HexUnsignedIntData data) { |
| out << std::string(data.input); |
| return out; |
| } |
| using IntegerTest_HexUnsigned = testing::TestWithParam<HexUnsignedIntData>; |
| TEST_P(IntegerTest_HexUnsigned, Matches) { |
| auto params = GetParam(); |
| Lexer l(std::string(params.input)); |
| |
| auto t = l.next(); |
| EXPECT_TRUE(t.IsUintLiteral()); |
| EXPECT_EQ(t.line(), 1u); |
| EXPECT_EQ(t.column(), 1u); |
| EXPECT_EQ(t.to_u32(), params.result); |
| |
| t = l.next(); |
| EXPECT_TRUE(t.IsEof()); |
| } |
| INSTANTIATE_TEST_SUITE_P( |
| LexerTest, |
| IntegerTest_HexUnsigned, |
| testing::Values(HexUnsignedIntData{"0x0u", 0}, |
| HexUnsignedIntData{"0x42u", 66}, |
| HexUnsignedIntData{"0xeF1Abc9u", 250719177}, |
| HexUnsignedIntData{"0x0u", |
| std::numeric_limits<uint32_t>::min()}, |
| HexUnsignedIntData{"0xFFFFFFFFu", |
| std::numeric_limits<uint32_t>::max()})); |
| |
| TEST_F(LexerTest, IntegerTest_HexUnsignedTooLarge) { |
| Lexer l("0xffffffffffu"); |
| auto t = l.next(); |
| ASSERT_TRUE(t.IsError()); |
| EXPECT_EQ(t.to_str(), "u32 (0xffffffffff) too large"); |
| } |
| |
| struct UnsignedIntData { |
| const char* input; |
| uint32_t result; |
| }; |
| inline std::ostream& operator<<(std::ostream& out, UnsignedIntData data) { |
| out << std::string(data.input); |
| return out; |
| } |
| using IntegerTest_Unsigned = testing::TestWithParam<UnsignedIntData>; |
| TEST_P(IntegerTest_Unsigned, Matches) { |
| auto params = GetParam(); |
| Lexer l(params.input); |
| |
| auto t = l.next(); |
| EXPECT_TRUE(t.IsUintLiteral()); |
| EXPECT_EQ(t.to_u32(), params.result); |
| EXPECT_EQ(1u, t.line()); |
| EXPECT_EQ(1u, t.column()); |
| } |
| INSTANTIATE_TEST_SUITE_P(LexerTest, |
| IntegerTest_Unsigned, |
| testing::Values(UnsignedIntData{"0u", 0u}, |
| UnsignedIntData{"123u", 123u}, |
| UnsignedIntData{"4294967295u", |
| 4294967295u})); |
| |
| struct SignedIntData { |
| const char* input; |
| int32_t result; |
| }; |
| inline std::ostream& operator<<(std::ostream& out, SignedIntData data) { |
| out << std::string(data.input); |
| return out; |
| } |
| using IntegerTest_Signed = testing::TestWithParam<SignedIntData>; |
| TEST_P(IntegerTest_Signed, Matches) { |
| auto params = GetParam(); |
| Lexer l(params.input); |
| |
| auto t = l.next(); |
| EXPECT_TRUE(t.IsSintLiteral()); |
| EXPECT_EQ(t.to_i32(), params.result); |
| EXPECT_EQ(1u, t.line()); |
| EXPECT_EQ(1u, t.column()); |
| } |
| INSTANTIATE_TEST_SUITE_P( |
| LexerTest, |
| IntegerTest_Signed, |
| testing::Values(SignedIntData{"0", 0}, |
| SignedIntData{"-2", -2}, |
| SignedIntData{"2", 2}, |
| SignedIntData{"123", 123}, |
| SignedIntData{"2147483647", 2147483647}, |
| SignedIntData{"-2147483648", -2147483648LL})); |
| |
| using IntegerTest_Invalid = testing::TestWithParam<const char*>; |
| TEST_P(IntegerTest_Invalid, Parses) { |
| Lexer l(GetParam()); |
| |
| auto t = l.next(); |
| EXPECT_FALSE(t.IsSintLiteral()); |
| EXPECT_FALSE(t.IsUintLiteral()); |
| } |
| INSTANTIATE_TEST_SUITE_P(LexerTest, |
| IntegerTest_Invalid, |
| testing::Values("2147483648", "4294967296u")); |
| |
| struct TokenData { |
| const char* input; |
| Token::Type type; |
| }; |
| inline std::ostream& operator<<(std::ostream& out, TokenData data) { |
| out << std::string(data.input); |
| return out; |
| } |
| using PunctuationTest = testing::TestWithParam<TokenData>; |
| TEST_P(PunctuationTest, Parses) { |
| auto params = GetParam(); |
| Lexer l(params.input); |
| |
| auto t = l.next(); |
| EXPECT_TRUE(t.Is(params.type)); |
| EXPECT_EQ(1u, t.line()); |
| EXPECT_EQ(1u, t.column()); |
| |
| t = l.next(); |
| EXPECT_EQ(1 + std::string(params.input).size(), t.column()); |
| } |
| INSTANTIATE_TEST_SUITE_P( |
| LexerTest, |
| PunctuationTest, |
| testing::Values(TokenData{"&", Token::Type::kAnd}, |
| TokenData{"&&", Token::Type::kAndAnd}, |
| TokenData{"->", Token::Type::kArrow}, |
| TokenData{"[[", Token::Type::kAttrLeft}, |
| TokenData{"]]", Token::Type::kAttrRight}, |
| TokenData{"/", Token::Type::kForwardSlash}, |
| TokenData{"!", Token::Type::kBang}, |
| TokenData{"[", Token::Type::kBracketLeft}, |
| TokenData{"]", Token::Type::kBracketRight}, |
| TokenData{"{", Token::Type::kBraceLeft}, |
| TokenData{"}", Token::Type::kBraceRight}, |
| TokenData{":", Token::Type::kColon}, |
| TokenData{",", Token::Type::kComma}, |
| TokenData{"=", Token::Type::kEqual}, |
| TokenData{"==", Token::Type::kEqualEqual}, |
| TokenData{">", Token::Type::kGreaterThan}, |
| TokenData{">=", Token::Type::kGreaterThanEqual}, |
| TokenData{"<", Token::Type::kLessThan}, |
| TokenData{"<=", Token::Type::kLessThanEqual}, |
| TokenData{"%", Token::Type::kMod}, |
| TokenData{"!=", Token::Type::kNotEqual}, |
| TokenData{"-", Token::Type::kMinus}, |
| TokenData{"::", Token::Type::kNamespace}, |
| TokenData{".", Token::Type::kPeriod}, |
| TokenData{"+", Token::Type::kPlus}, |
| TokenData{"|", Token::Type::kOr}, |
| TokenData{"||", Token::Type::kOrOr}, |
| TokenData{"(", Token::Type::kParenLeft}, |
| TokenData{")", Token::Type::kParenRight}, |
| TokenData{";", Token::Type::kSemicolon}, |
| TokenData{"*", Token::Type::kStar}, |
| TokenData{"^", Token::Type::kXor})); |
| |
| using KeywordTest = testing::TestWithParam<TokenData>; |
| TEST_P(KeywordTest, Parses) { |
| auto params = GetParam(); |
| Lexer l(params.input); |
| |
| auto t = l.next(); |
| EXPECT_TRUE(t.Is(params.type)); |
| EXPECT_EQ(1u, t.line()); |
| EXPECT_EQ(1u, t.column()); |
| |
| t = l.next(); |
| EXPECT_EQ(1 + std::string(params.input).size(), t.column()); |
| } |
| INSTANTIATE_TEST_SUITE_P( |
| LexerTest, |
| KeywordTest, |
| testing::Values( |
| TokenData{"array", Token::Type::kArray}, |
| TokenData{"as", Token::Type::kAs}, |
| TokenData{"binding", Token::Type::kBinding}, |
| TokenData{"block", Token::Type::kBlock}, |
| TokenData{"bool", Token::Type::kBool}, |
| TokenData{"break", Token::Type::kBreak}, |
| TokenData{"builtin", Token::Type::kBuiltin}, |
| TokenData{"case", Token::Type::kCase}, |
| TokenData{"cast", Token::Type::kCast}, |
| TokenData{"compute", Token::Type::kCompute}, |
| TokenData{"const", Token::Type::kConst}, |
| TokenData{"continue", Token::Type::kContinue}, |
| TokenData{"continuing", Token::Type::kContinuing}, |
| TokenData{"default", Token::Type::kDefault}, |
| TokenData{"discard", Token::Type::kDiscard}, |
| TokenData{"else", Token::Type::kElse}, |
| TokenData{"elseif", Token::Type::kElseIf}, |
| TokenData{"entry_point", Token::Type::kEntryPoint}, |
| TokenData{"f32", Token::Type::kF32}, |
| TokenData{"fallthrough", Token::Type::kFallthrough}, |
| TokenData{"false", Token::Type::kFalse}, |
| TokenData{"fn", Token::Type::kFn}, |
| TokenData{"for", Token::Type::kFor}, |
| TokenData{"fragment", Token::Type::kFragment}, |
| TokenData{"function", Token::Type::kFunction}, |
| TokenData{"i32", Token::Type::kI32}, |
| TokenData{"if", Token::Type::kIf}, |
| TokenData{"image", Token::Type::kImage}, |
| TokenData{"import", Token::Type::kImport}, |
| TokenData{"in", Token::Type::kIn}, |
| TokenData{"location", Token::Type::kLocation}, |
| TokenData{"loop", Token::Type::kLoop}, |
| TokenData{"mat2x2", Token::Type::kMat2x2}, |
| TokenData{"mat2x3", Token::Type::kMat2x3}, |
| TokenData{"mat2x4", Token::Type::kMat2x4}, |
| TokenData{"mat3x2", Token::Type::kMat3x2}, |
| TokenData{"mat3x3", Token::Type::kMat3x3}, |
| TokenData{"mat3x4", Token::Type::kMat3x4}, |
| TokenData{"mat4x2", Token::Type::kMat4x2}, |
| TokenData{"mat4x3", Token::Type::kMat4x3}, |
| TokenData{"mat4x4", Token::Type::kMat4x4}, |
| TokenData{"offset", Token::Type::kOffset}, |
| TokenData{"out", Token::Type::kOut}, |
| TokenData{"private", Token::Type::kPrivate}, |
| TokenData{"ptr", Token::Type::kPtr}, |
| TokenData{"return", Token::Type::kReturn}, |
| TokenData{"sampler", Token::Type::kSampler}, |
| TokenData{"sampler_comparison", Token::Type::kComparisonSampler}, |
| TokenData{"set", Token::Type::kSet}, |
| TokenData{"storage_buffer", Token::Type::kStorageBuffer}, |
| TokenData{"stride", Token::Type::kStride}, |
| TokenData{"struct", Token::Type::kStruct}, |
| TokenData{"switch", Token::Type::kSwitch}, |
| TokenData{"texture_depth_2d", Token::Type::kTextureDepth2d}, |
| TokenData{"texture_depth_2d_array", Token::Type::kTextureDepth2dArray}, |
| TokenData{"texture_depth_cube", Token::Type::kTextureDepthCube}, |
| TokenData{"texture_depth_cube_array", |
| Token::Type::kTextureDepthCubeArray}, |
| TokenData{"true", Token::Type::kTrue}, |
| TokenData{"type", Token::Type::kType}, |
| TokenData{"u32", Token::Type::kU32}, |
| TokenData{"uniform", Token::Type::kUniform}, |
| TokenData{"uniform_constant", Token::Type::kUniformConstant}, |
| TokenData{"var", Token::Type::kVar}, |
| TokenData{"vec2", Token::Type::kVec2}, |
| TokenData{"vec3", Token::Type::kVec3}, |
| TokenData{"vec4", Token::Type::kVec4}, |
| TokenData{"vertex", Token::Type::kVertex}, |
| TokenData{"void", Token::Type::kVoid}, |
| TokenData{"workgroup", Token::Type::kWorkgroup})); |
| |
| using KeywordTest_Reserved = testing::TestWithParam<const char*>; |
| TEST_P(KeywordTest_Reserved, Parses) { |
| auto* keyword = GetParam(); |
| Lexer l(keyword); |
| |
| auto t = l.next(); |
| EXPECT_TRUE(t.IsReservedKeyword()); |
| EXPECT_EQ(t.to_str(), keyword); |
| } |
| INSTANTIATE_TEST_SUITE_P(LexerTest, |
| KeywordTest_Reserved, |
| testing::Values("asm", |
| "bf16", |
| "do", |
| "enum", |
| "f16", |
| "f64", |
| "i8", |
| "i16", |
| "i64", |
| "let", |
| "premerge", |
| "typedef", |
| "u8", |
| "u16", |
| "u64", |
| "unless", |
| "regardless")); |
| |
| } // namespace |
| } // namespace wgsl |
| } // namespace reader |
| } // namespace tint |
