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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 <cstring>
#include "gmock/gmock.h"
#include "src/tint/lang/core/fluent_types.h"
#include "src/tint/lang/wgsl/reader/parser/helper_test.h"
using namespace tint::core::fluent_types; // NOLINT
namespace tint::wgsl::reader {
namespace {
// Makes an IEEE 754 binary64 floating point number with
// - 0 sign if sign is 0, 1 otherwise
// - 'exponent_bits' is placed in the exponent space.
// So, the exponent bias must already be included.
double MakeDouble(uint64_t sign, uint64_t biased_exponent, uint64_t mantissa) {
const uint64_t sign_bit = sign ? 0x8000000000000000u : 0u;
// The binary64 exponent is 11 bits, just below the sign.
const uint64_t exponent_bits = (biased_exponent & 0x7FFull) << 52;
// The mantissa is the bottom 52 bits.
const uint64_t mantissa_bits = (mantissa & 0xFFFFFFFFFFFFFull);
uint64_t bits = sign_bit | exponent_bits | mantissa_bits;
double result = 0.0;
static_assert(sizeof(result) == sizeof(bits),
"expected double and uint64_t to be the same size");
std::memcpy(&result, &bits, sizeof(bits));
return result;
}
TEST_F(WGSLParserTest, ConstLiteral_Int) {
{
auto p = parser("234");
auto c = p->const_literal();
EXPECT_TRUE(c.matched);
EXPECT_FALSE(c.errored);
EXPECT_FALSE(p->has_error()) << p->error();
ASSERT_NE(c.value, nullptr);
ASSERT_TRUE(c->Is<ast::IntLiteralExpression>());
EXPECT_EQ(c->As<ast::IntLiteralExpression>()->value, 234);
EXPECT_EQ(c->As<ast::IntLiteralExpression>()->suffix,
ast::IntLiteralExpression::Suffix::kNone);
EXPECT_EQ(c->source.range, (Source::Range{{1u, 1u}, {1u, 4u}}));
}
{
auto p = parser("234i");
auto c = p->const_literal();
EXPECT_TRUE(c.matched);
EXPECT_FALSE(c.errored);
EXPECT_FALSE(p->has_error()) << p->error();
ASSERT_NE(c.value, nullptr);
ASSERT_TRUE(c->Is<ast::IntLiteralExpression>());
EXPECT_EQ(c->As<ast::IntLiteralExpression>()->value, 234);
EXPECT_EQ(c->As<ast::IntLiteralExpression>()->suffix,
ast::IntLiteralExpression::Suffix::kI);
EXPECT_EQ(c->source.range, (Source::Range{{1u, 1u}, {1u, 5u}}));
}
}
TEST_F(WGSLParserTest, ConstLiteral_Uint) {
auto p = parser("234u");
auto c = p->const_literal();
EXPECT_TRUE(c.matched);
EXPECT_FALSE(c.errored);
EXPECT_FALSE(p->has_error()) << p->error();
ASSERT_NE(c.value, nullptr);
ASSERT_TRUE(c->Is<ast::IntLiteralExpression>());
EXPECT_EQ(c->As<ast::IntLiteralExpression>()->value, 234);
EXPECT_EQ(c->As<ast::IntLiteralExpression>()->suffix, ast::IntLiteralExpression::Suffix::kU);
EXPECT_EQ(c->source.range, (Source::Range{{1u, 1u}, {1u, 5u}}));
}
TEST_F(WGSLParserTest, ConstLiteral_InvalidFloat_IncompleteExponent) {
auto p = parser("1.0e+");
auto c = p->const_literal();
EXPECT_FALSE(c.matched);
EXPECT_TRUE(c.errored);
EXPECT_EQ(p->error(), "1:1: incomplete exponent for floating point literal: 1.0e+");
ASSERT_EQ(c.value, nullptr);
}
struct FloatLiteralTestCase {
std::string input;
double expected;
bool operator==(const FloatLiteralTestCase& other) const {
return (input == other.input) && std::equal_to<double>()(expected, other.expected);
}
};
inline std::ostream& operator<<(std::ostream& out, FloatLiteralTestCase data) {
out << data.input;
return out;
}
class ParserImplFloatLiteralTest : public WGSLParserTestWithParam<FloatLiteralTestCase> {};
TEST_P(ParserImplFloatLiteralTest, Parse) {
auto params = GetParam();
SCOPED_TRACE(params.input);
auto p = parser(params.input);
auto c = p->const_literal();
EXPECT_TRUE(c.matched);
EXPECT_FALSE(c.errored);
EXPECT_FALSE(p->has_error()) << p->error();
ASSERT_NE(c.value, nullptr);
auto* literal = c->As<ast::FloatLiteralExpression>();
ASSERT_NE(literal, nullptr);
// Use EXPECT_EQ instead of EXPECT_DOUBLE_EQ here, because EXPECT_DOUBLE_EQ use AlmostEquals(),
// which allows an error up to 4 ULPs.
EXPECT_EQ(literal->value, params.expected)
<< "\n"
<< "got: " << std::hexfloat << literal->value << "\n"
<< "expected: " << std::hexfloat << params.expected;
if (params.input.back() == 'f') {
EXPECT_EQ(c->As<ast::FloatLiteralExpression>()->suffix,
ast::FloatLiteralExpression::Suffix::kF);
} else if (params.input.back() == 'h') {
EXPECT_EQ(c->As<ast::FloatLiteralExpression>()->suffix,
ast::FloatLiteralExpression::Suffix::kH);
} else {
EXPECT_EQ(c->As<ast::FloatLiteralExpression>()->suffix,
ast::FloatLiteralExpression::Suffix::kNone);
}
EXPECT_EQ(c->source.range, (Source::Range{{1u, 1u}, {1u, 1u + params.input.size()}}));
}
using FloatLiteralTestCaseList = std::vector<FloatLiteralTestCase>;
INSTANTIATE_TEST_SUITE_P(ParserImplFloatLiteralTest_Float,
ParserImplFloatLiteralTest,
testing::ValuesIn(FloatLiteralTestCaseList{
{"0.0", 0.0}, // Zero
{"1.0", 1.0}, // One
{"1000000000.0", 1e9}, // Billion
{"0.0", MakeDouble(0, 0, 0)}, // Zero
{"1.0", MakeDouble(0, 1023, 0)}, // One
{"234.e12", 234.e12},
{"234.e12f", static_cast<double>(234.e12f)},
{"234.e2h", static_cast<double>(f16::Quantize(234.e2))},
// Tiny cases
{"1e-5000", 0.0},
{"1e-5000f", 0.0},
{"1e-50f", 0.0},
{"1e-5000h", 0.0},
{"1e-50h", 0.0},
{"1e-8h", 0.0}, // The smallest positive subnormal f16 is 5.96e-8
// Nearly overflow
{"1.e308", 1.e308},
{"1.8e307", 1.8e307},
{"1.798e307", 1.798e307},
{"1.7977e307", 1.7977e307},
// Nearly overflow
{"1e38f", static_cast<double>(1e38f)},
{"4.0e37f", static_cast<double>(4.0e37f)},
{"3.5e37f", static_cast<double>(3.5e37f)},
{"3.403e37f", static_cast<double>(3.403e37f)},
// Nearly overflow
{"6e4h", 6e4},
{"8.0e3h", 8.0e3},
{"3.5e3h", 3.5e3},
{"3.403e3h", 3.402e3}, // Quantized
}));
const double NegInf = MakeDouble(1, 0x7FF, 0);
const double PosInf = MakeDouble(0, 0x7FF, 0);
FloatLiteralTestCaseList HexFloatCases() {
return FloatLiteralTestCaseList{
// Regular numbers
{"0x0p+0", 0x0p+0},
{"0x1p+0", 0x1p+0},
{"0x1p+1", 0x1p+1},
{"0x1.8p+1", 0x1.8p+1},
{"0x1.99999ap-4", 0x1.99999ap-4},
{"0x1p-1", 0x1p-1},
{"0x1p-2", 0x1p-2},
{"0x1.8p-1", 0x1.8p-1},
{"0x0.4p+1", 0x0.4p+1},
{"0x0.02p+3", 0x0.02p+3},
{"0x4.4p+1", 0x4.4p+1},
{"0x8c.02p+3", 0x8c.02p+3},
// Large numbers
{"0x1p+9", 0x1p+9},
{"0x1p+10", 0x1p+10},
{"0x1.02p+10", 0x1.02p+10},
// Small numbers
{"0x1p-9", 0x1p-9},
{"0x1p-10", 0x1p-10},
{"0x1.02p-3", 0x1.02p-3},
// Near lowest non-denorm
{"0x1p-1020", 0x1p-1020},
{"0x1p-1021", 0x1p-1021},
{"0x1p-124f", 0x1p-124},
{"0x1p-125f", 0x1p-125},
{"0x1p-12h", 0x1p-12},
{"0x1p-13h", 0x1p-13},
// Lowest non-denorm
{"0x1p-1022", 0x1p-1022},
{"0x1p-126f", 0x1p-126},
{"0x1p-14h", 0x1p-14},
// Denormalized values
{"0x1p-1023", 0x1p-1023},
{"0x0.8p-1022", 0x0.8p-1022},
{"0x1p-1024", 0x1p-1024},
{"0x0.2p-1021", 0x0.2p-1021},
{"0x1p-1025", 0x1p-1025},
{"0x1p-1026", 0x1p-1026},
{"0x1.8p-1023", 0x1.8p-1023},
{"0x1.8p-1024", 0x1.8p-1024},
{"0x1p-127f", 0x1p-127},
{"0x0.8p-126f", 0x0.8p-126},
{"0x1p-128f", 0x1p-128},
{"0x0.2p-125f", 0x0.2p-125},
{"0x1p-129f", 0x1p-129},
{"0x1p-130f", 0x1p-130},
{"0x1.8p-127f", 0x1.8p-127},
{"0x1.8p-128f", 0x1.8p-128},
{"0x1p-15h", 0x1p-15},
{"0x0.8p-14h", 0x0.8p-14},
{"0x1p-16h", 0x1p-16},
{"0x0.2p-13h", 0x0.2p-13},
{"0x1p-17h", 0x1p-17},
{"0x1p-18h", 0x1p-18},
{"0x1.8p-15h", 0x1.8p-15},
{"0x1.8p-16h", 0x1.8p-16},
// F64 extremities
{"0x1p-1074", 0x1p-1074}, // +SmallestDenormal
{"0x1p-1073", 0x1p-1073}, // +BiggerDenormal
{"0x1.ffffffffffffep-1023", 0x1.ffffffffffffep-1023}, // +LargestDenormal
{"0x0.fffffffffffffp-1022", 0x0.fffffffffffffp-1022}, // +LargestDenormal
{"0x0.cafebeeff000dp-1022", 0x0.cafebeeff000dp-1022}, // +Subnormal
{"0x1.2bfaf8p-1052", 0x1.2bfaf8p-1052}, // +Subnormal
{"0x1.55554p-1055", 0x1.55554p-1055}, // +Subnormal
{"0x1.fffffffffffp-1027", 0x1.fffffffffffp-1027}, // +Subnormal, = 0x0.0fffffffffff8p-1022
// F32 extremities
{"0x1p-149f", 0x1p-149}, // +SmallestDenormal
{"0x1p-148f", 0x1p-148}, // +BiggerDenormal
{"0x1.fffffcp-127f", 0x1.fffffcp-127}, // +LargestDenormal
{"0x0.fffffep-126f", 0x0.fffffep-126}, // +LargestDenormal
{"0x1.0p-126f", 0x1.0p-126}, // +SmallestNormal
{"0x8.0p-129f", 0x8.0p-129}, // +SmallestNormal
{"0x0.cafebp-129f", 0x0.cafebp-129}, // +Subnormal
{"0x1.2bfaf8p-127f", 0x1.2bfaf8p-127}, // +Subnormal
{"0x1.55554p-130f", 0x1.55554p-130}, // +Subnormal
// F32 exactly representable
{"0x1.000002p+0f", 0x1.000002p+0},
{"0x8.0000fp+0f", 0x8.0000fp+0},
{"0x8.fffffp+0f", 0x8.fffffp+0},
{"0x8.00003p+0f", 0x8.00003p+0},
{"0x2.123p+0f", 0x2.123p+0},
{"0x2.cafefp+0f", 0x2.cafefp+0},
{"0x0.0000fep-126f", 0x0.0000fep-126}, // Subnormal
{"0x3.f8p-144f", 0x3.f8p-144}, // Subnormal
// F16 extremities
{"0x1p-24h", 0x1p-24}, // +SmallestDenormal
{"0x1p-23h", 0x1p-23}, // +BiggerDenormal
{"0x1.ff8p-15h", 0x1.ff8p-15}, // +LargestDenormal
{"0x0.ffcp-14h", 0x0.ffcp-14}, // +LargestDenormal
{"0x1.0p-14h", 0x1.0p-14}, // +SmallestNormal
{"0x8.0p-17h", 0x8.0p-17}, // +SmallestNormal
{"0x0.a8p-19h", 0x0.a8p-19}, // +Subnormal
{"0x1.7ap-17h", 0x1.7ap-17}, // +Subnormal
{"0x1.dp-20h", 0x1.dp-20}, // +Subnormal
// F16 exactly representable
{"0x1.004p+0h", 0x1.004p+0},
{"0x8.02p+0h", 0x8.02p+0},
{"0x8.fep+0h", 0x8.fep+0},
{"0x8.06p+0h", 0x8.06p+0},
{"0x2.128p+0h", 0x2.128p+0},
{"0x2.ca8p+0h", 0x2.ca8p+0},
{"0x0.0fcp-14h", 0x0.0fcp-14}, // Subnormal
{"0x3.f00p-20h", 0x3.f00p-20}, // Subnormal
// Underflow -> Zero
{"0x1p-1075", 0.0}, // Exponent underflows
{"0x1p-5000", 0.0},
{"0x0.00000000000000000000001p-1022", 0.0}, // Fraction causes underflow
{"0x0.01p-1073", -0.0},
{"0x1.0p-9223372036854774784", 0}, // -(INT64_MAX - 1023) (smallest valid exponent)
// Zero with non-zero exponent -> Zero
{"0x0p+0", 0.0},
{"0x0p+1", 0.0},
{"0x0p-1", 0.0},
{"0x0p+9999999999", 0.0},
{"0x0p-9999999999", 0.0},
// Same, but with very large positive exponents that would cause overflow
// if the mantissa were non-zero.
{"0x0p+10000000000000000000", 0.0}, // 10 quintillion (10,000,000,000,000,000,000)
{"0x0p+100000000000000000000", 0.0}, // 100 quintillion (100,000,000,000,000,000,000)
{"0x0.00p+10000000000000000000", 0.0}, // As above 4, but with fractional part
{"0x0.00p+100000000000000000000", 0.0},
{"0x0p-10000000000000000000", 0.0}, // As above 8, but with negative exponents
{"0x0p-100000000000000000000", 0.0},
{"0x0.00p-10000000000000000000", 0.0},
{"0x0.00p-100000000000000000000", 0.0},
// Test parsing
{"0x0p0", 0.0},
{"0x0p-0", 0.0},
{"0x0p+000", 0.0},
{"0x00000000000000p+000000000000000", 0.0},
{"0x00000000000000p-000000000000000", 0.0},
{"0x00000000000001p+000000000000000", 1.0},
{"0x00000000000001p-000000000000000", 1.0},
{"0x0000000000000000000001.99999ap-000000000000000004", 0.10000000149011612},
{"0x2p+0", 2.0},
{"0xFFp+0", 255.0},
{"0x0.8p+0", 0.5},
{"0x0.4p+0", 0.25},
{"0x0.4p+1", 2 * 0.25},
{"0x0.4p+2", 4 * 0.25},
{"0x123Ep+1", 9340.0},
{"0x1a2b3cP12", 7.024656384e+09},
// Examples without a binary exponent part.
{"0x1.", 1.0},
{"0x.8", 0.5},
{"0x1.8", 1.5},
// Examples with a binary exponent and a 'f' suffix.
{"0x1.p0f", 1.0},
{"0x.8p2f", 2.0},
{"0x1.8p-1f", 0.75},
{"0x2p-2f", 0.5}, // No binary point
// Examples with a binary exponent and a 'h' suffix.
{"0x1.p0h", 1.0},
{"0x.8p2h", 2.0},
{"0x1.8p-1h", 0.75},
{"0x2p-2h", 0.5}, // No binary point
};
}
INSTANTIATE_TEST_SUITE_P(ParserImplFloatLiteralTest_HexFloat,
ParserImplFloatLiteralTest,
testing::ValuesIn(HexFloatCases()));
// Now test all the same hex float cases, but with 0X instead of 0x
template <typename ARR>
std::vector<FloatLiteralTestCase> UpperCase0X(const ARR& cases) {
std::vector<FloatLiteralTestCase> result;
result.reserve(cases.size());
for (const auto& c : cases) {
result.emplace_back(c);
auto& input = result.back().input;
const auto where = input.find("0x");
if (where != std::string::npos) {
input[where + 1] = 'X';
}
}
return result;
}
using UpperCase0XTest = ::testing::Test;
TEST_F(UpperCase0XTest, Samples) {
const auto cases = FloatLiteralTestCaseList{
{"absent", 0.0}, {"0x", 1.0}, {"0X", 2.0}, {" 0x1p1", 5.0}, {" examine ", 7.0}};
const auto expected = FloatLiteralTestCaseList{
{"absent", 0.0}, {"0X", 1.0}, {"0X", 2.0}, {" 0X1p1", 5.0}, {" examine ", 7.0}};
auto result = UpperCase0X(cases);
EXPECT_THAT(result, ::testing::ElementsAreArray(expected));
}
INSTANTIATE_TEST_SUITE_P(ParserImplFloatLiteralTest_HexFloat_UpperCase0X,
ParserImplFloatLiteralTest,
testing::ValuesIn(UpperCase0X(HexFloatCases())));
// <error, source>
using InvalidLiteralTestCase = std::tuple<const char*, const char*>;
class ParserImplInvalidLiteralTest : public WGSLParserTestWithParam<InvalidLiteralTestCase> {};
TEST_P(ParserImplInvalidLiteralTest, Parse) {
auto* error = std::get<0>(GetParam());
auto* source = std::get<1>(GetParam());
auto p = parser(source);
auto c = p->const_literal();
EXPECT_FALSE(c.matched);
EXPECT_TRUE(c.errored);
EXPECT_EQ(p->error(), std::string(error));
ASSERT_EQ(c.value, nullptr);
}
INSTANTIATE_TEST_SUITE_P(
HexFloatMantissaTooLarge,
ParserImplInvalidLiteralTest,
testing::Combine(testing::Values("1:1: mantissa is too large for hex float"),
testing::ValuesIn(std::vector<const char*>{
"0x1.ffffffffffffffff8p0",
"0x1f.fffffffffffffff8p0",
"0x1ff.ffffffffffffff8p0",
"0x1fff.fffffffffffff8p0",
"0x1ffff.ffffffffffff8p0",
"0x1fffff.fffffffffff8p0",
"0x1ffffff.ffffffffff8p0",
"0x1fffffff.fffffffff8p0",
"0x1ffffffff.ffffffff8p0",
"0x1fffffffff.fffffff8p0",
"0x1ffffffffff.ffffff8p0",
"0x1fffffffffff.fffff8p0",
"0x1ffffffffffff.ffff8p0",
"0x1fffffffffffff.fff8p0",
"0x1ffffffffffffff.ff8p0",
"0x1ffffffffffffffff.8p0",
"0x1ffffffffffffffff8.p0",
})));
INSTANTIATE_TEST_SUITE_P(
HexFloatExponentTooLarge,
ParserImplInvalidLiteralTest,
testing::Combine(testing::Values("1:1: exponent is too large for hex float"),
testing::ValuesIn(std::vector<const char*>{
"0x1p+9223372036854774785",
"0x1p-9223372036854774785",
"0x1p+18446744073709551616",
"0x1p-18446744073709551616",
})));
INSTANTIATE_TEST_SUITE_P(
HexFloatMissingExponent,
ParserImplInvalidLiteralTest,
testing::Combine(testing::Values("1:1: expected an exponent value for hex float"),
testing::ValuesIn(std::vector<const char*>{
// Lower case p
"0x0p",
"0x0p+",
"0x0p-",
"0x1.0p",
"0x0.1p",
// Upper case p
"0x0P",
"0x0P+",
"0x0P-",
"0x1.0P",
"0x0.1P",
})));
INSTANTIATE_TEST_SUITE_P(
HexNaNAFloat,
ParserImplInvalidLiteralTest,
testing::Combine(testing::Values("1:1: value cannot be represented as 'abstract-float'"),
testing::ValuesIn(std::vector<const char*>{
"0x1.8p+1024",
"0x1.0002p+1024",
"0x1.0018p+1024",
"0x1.01ep+1024",
"0x1.fffffep+1024",
})));
INSTANTIATE_TEST_SUITE_P(
HexNaNF32,
ParserImplInvalidLiteralTest,
testing::Combine(testing::Values("1:1: value cannot be represented as 'f32'"),
testing::ValuesIn(std::vector<const char*>{
"0x1.8p+128f",
"0x1.0002p+128f",
"0x1.0018p+128f",
"0x1.01ep+128f",
"0x1.fffffep+128f",
})));
INSTANTIATE_TEST_SUITE_P(
HexNaNF16,
ParserImplInvalidLiteralTest,
testing::Combine(testing::Values("1:1: value cannot be represented as 'f16'"),
testing::ValuesIn(std::vector<const char*>{
"0x1.8p+16h",
"0x1.004p+16h",
"0x1.018p+16h",
"0x1.1ep+16h",
"0x1.ffcp+16h",
})));
INSTANTIATE_TEST_SUITE_P(
HexOverflowAFloat,
ParserImplInvalidLiteralTest,
testing::Combine(testing::Values("1:1: value cannot be represented as 'abstract-float'"),
testing::ValuesIn(std::vector<const char*>{
"0x1p+1024",
"0x1.1p+1024",
"0x1p+1025",
"0x32p+1023",
"0x32p+5000",
"0x1.0p9223372036854774784",
})));
INSTANTIATE_TEST_SUITE_P(
HexOverflowF32,
ParserImplInvalidLiteralTest,
testing::Combine(testing::Values("1:1: value cannot be represented as 'f32'"),
testing::ValuesIn(std::vector<const char*>{
"0x1p+128f",
"0x1.1p+128f",
"0x1p+129f",
"0x32p+127f",
"0x32p+500f",
})));
INSTANTIATE_TEST_SUITE_P(
HexOverflowF16,
ParserImplInvalidLiteralTest,
testing::Combine(testing::Values("1:1: value cannot be represented as 'f16'"),
testing::ValuesIn(std::vector<const char*>{
"0x1p+16h",
"0x1.1p+16h",
"0x1p+17h",
"0x32p+15h",
"0x32p+500h",
})));
INSTANTIATE_TEST_SUITE_P(
HexNotExactlyRepresentableF32,
ParserImplInvalidLiteralTest,
testing::Combine(testing::Values("1:1: value cannot be exactly represented as 'f32'"),
testing::ValuesIn(std::vector<const char*>{
"0x1.000001p+0f", // Quantizes to 0x1.0p+0
"0x1.0000008p+0f", // Quantizes to 0x1.0p+0
"0x1.0000000000001p+0f", // Quantizes to 0x1.0p+0
"0x8.0000f8p+0f", // Quantizes to 0x8.0000fp+0
"0x8.000038p+0f", // Quantizes to 0x8.00003p+0
"0x2.cafef00dp+0f", // Quantizes to 0x2.cafefp+0
"0x0.0000ffp-126f", // Subnormal, quantizes to 0x0.0000fep-126
"0x3.fcp-144f", // Subnormal, quantizes to 0x3.f8p-144
"0x0.ffffffp-126f", // Subnormal, quantizes to 0x0.fffffep-144
"0x0.fffffe0000001p-126f", // Subnormal, quantizes to 0x0.fffffep-144
"0x1.8p-149f", // Subnormal, quantizes to 0x1.0p-149f
"0x1.4p-149f", // Subnormal, quantizes to 0x1.0p-149f
"0x1.000002p-149f", // Subnormal, quantizes to 0x1.0p-149f
"0x1.0000000000001p-149f", // Subnormal, quantizes to 0x1.0p-149f
"0x1.0p-150f", // Smaller than the smallest subnormal, quantizes to 0.0
"0x1.8p-150f", // Smaller than the smallest subnormal, quantizes to 0.0
})));
INSTANTIATE_TEST_SUITE_P(
HexNotExactlyRepresentableF16,
ParserImplInvalidLiteralTest,
testing::Combine(
testing::Values("1:1: value cannot be exactly represented as 'f16'"),
testing::ValuesIn(std::vector<const char*>{
"0x1.002p+0h", // Quantizes to 0x1.0p+0, has 11 mantissa bits rather than 10
"0x1.001p+0h", // Quantizes to 0x1.0p+0, has 12 mantissa bits rather than 10
"0x1.0000000000001p+0h", // Quantizes to 0x1.0p+0, has 52 mantissa bits rather than 10
"0x8.0fp+0h", // Quantizes to 0x8.0ep+0
"0x8.31p+0h", // Quantizes to 0x8.30p+0
"0x2.ca80dp+0h", // Quantizes to 0x2.ca8p+0
"0x4.ba8p+0h", // Quantizes to 0x4.bap+0
"0x4.011p+0h", // Quantizes to 0x4.01p+0
"0x0.0fep-14h", // Subnormal, quantizes to 0x0.0fcp-14
"0x3.f8p-20h", // Subnormal, quantizes to 0x3.f0p-20
"0x0.ffep-14h", // Subnormal, quantizes to 0x0.ffcp-14
"0x0.ffe0000000001p-14h", // Subnormal, quantizes to 0x0.ffcp-14
"0x0.fffffffffffffp-14h", // Subnormal, quantizes to 0x0.ffcp-14
"0x1.8p-24h", // Subnormal, quantizes to 0x1.0p-24f
"0x1.4p-24h", // Subnormal, quantizes to 0x1.0p-24f
"0x1.004p-24h", // Subnormal, quantizes to 0x1.0p-24f
"0x1.0000000000001p-24h", // Subnormal, quantizes to 0x1.0p-24f
"0x1.0p-25h", // Smaller than the smallest subnormal, quantizes to 0.0
"0x1.8p-25h", // Smaller than the smallest subnormal, quantizes to 0.0
})));
INSTANTIATE_TEST_SUITE_P(
DecOverflowAFloat,
ParserImplInvalidLiteralTest,
testing::Combine(testing::Values("1:1: value cannot be represented as 'abstract-float'"),
testing::ValuesIn(std::vector<const char*>{
"1.e309",
"1.8e308",
"1.798e308",
"1.7977e308",
"1.2e+5000",
})));
INSTANTIATE_TEST_SUITE_P(
DecOverflowF32,
ParserImplInvalidLiteralTest,
testing::Combine(testing::Values("1:1: value cannot be represented as 'f32'"),
testing::ValuesIn(std::vector<const char*>{
"1e39f",
"4.0e38f",
"3.5e38f",
"3.403e38f",
"1.2e+256f",
})));
INSTANTIATE_TEST_SUITE_P(
DecOverflowF16,
ParserImplInvalidLiteralTest,
testing::Combine(testing::Values("1:1: value cannot be represented as 'f16'"),
testing::ValuesIn(std::vector<const char*>{
"1.0e5h",
"7.0e4h",
"6.6e4h",
"6.56e4h",
"6.554e4h",
"1.2e+32h",
})));
TEST_F(WGSLParserTest, ConstLiteral_FloatHighest) {
const auto highest = std::numeric_limits<float>::max();
const auto expected_highest = 340282346638528859811704183484516925440.0f;
if (highest < expected_highest || highest > expected_highest) {
GTEST_SKIP() << "std::numeric_limits<float>::max() is not as expected for "
"this target";
}
auto p = parser("340282346638528859811704183484516925440.0");
auto c = p->const_literal();
EXPECT_TRUE(c.matched);
EXPECT_FALSE(c.errored);
EXPECT_FALSE(p->has_error()) << p->error();
ASSERT_NE(c.value, nullptr);
ASSERT_TRUE(c->Is<ast::FloatLiteralExpression>());
EXPECT_EQ(c->As<ast::FloatLiteralExpression>()->value, std::numeric_limits<float>::max());
EXPECT_EQ(c->As<ast::FloatLiteralExpression>()->suffix,
ast::FloatLiteralExpression::Suffix::kNone);
EXPECT_EQ(c->source.range, (Source::Range{{1u, 1u}, {1u, 42u}}));
}
TEST_F(WGSLParserTest, ConstLiteral_True) {
auto p = parser("true");
auto c = p->const_literal();
EXPECT_TRUE(c.matched);
EXPECT_FALSE(c.errored);
EXPECT_FALSE(p->has_error()) << p->error();
ASSERT_NE(c.value, nullptr);
ASSERT_TRUE(c->Is<ast::BoolLiteralExpression>());
EXPECT_TRUE(c->As<ast::BoolLiteralExpression>()->value);
EXPECT_EQ(c->source.range, (Source::Range{{1u, 1u}, {1u, 5u}}));
}
TEST_F(WGSLParserTest, ConstLiteral_False) {
auto p = parser("false");
auto c = p->const_literal();
EXPECT_TRUE(c.matched);
EXPECT_FALSE(c.errored);
EXPECT_FALSE(p->has_error()) << p->error();
ASSERT_NE(c.value, nullptr);
ASSERT_TRUE(c->Is<ast::BoolLiteralExpression>());
EXPECT_FALSE(c->As<ast::BoolLiteralExpression>()->value);
EXPECT_EQ(c->source.range, (Source::Range{{1u, 1u}, {1u, 6u}}));
}
TEST_F(WGSLParserTest, ConstLiteral_NoMatch) {
auto p = parser("another-token");
auto c = p->const_literal();
EXPECT_FALSE(c.matched);
EXPECT_FALSE(c.errored);
EXPECT_FALSE(p->has_error()) << p->error();
ASSERT_EQ(c.value, nullptr);
}
} // namespace
} // namespace tint::wgsl::reader