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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/lexer.h"
#include <limits>
#include <tuple>
#include <vector>
#include "gtest/gtest.h"
#include "src/tint/number.h"
namespace tint::reader::wgsl {
namespace {
using LexerTest = testing::Test;
// Blankspace constants. These are macros on purpose to be able to easily build
// up string literals with them.
//
// Same line code points
#define kSpace " "
#define kHTab "\t"
#define kL2R "\xE2\x80\x8E"
#define kR2L "\xE2\x80\x8F"
// Line break code points
#define kCR "\r"
#define kLF "\n"
#define kVTab "\x0B"
#define kFF "\x0C"
#define kNL "\xC2\x85"
#define kLS "\xE2\x80\xA8"
#define kPS "\xE2\x80\xA9"
TEST_F(LexerTest, Empty) {
Source::File file("", "");
Lexer l(&file);
auto list = l.Lex();
ASSERT_EQ(1u, list.size());
EXPECT_TRUE(list[0].IsEof());
}
TEST_F(LexerTest, Skips_Blankspace_Basic) {
Source::File file("", "\t\r\n\t ident\t\n\t \r ");
Lexer l(&file);
auto list = l.Lex();
ASSERT_EQ(2u, list.size());
{
auto& t = list[0];
EXPECT_TRUE(t.IsIdentifier());
EXPECT_EQ(t.source().range.begin.line, 2u);
EXPECT_EQ(t.source().range.begin.column, 6u);
EXPECT_EQ(t.source().range.end.line, 2u);
EXPECT_EQ(t.source().range.end.column, 11u);
EXPECT_EQ(t.to_str(), "ident");
}
{
auto& t = list[1];
EXPECT_TRUE(t.IsEof());
}
}
TEST_F(LexerTest, Skips_Blankspace_Exotic) {
Source::File file("", //
kVTab kFF kNL kLS kPS kL2R kR2L //
"ident" //
kVTab kFF kNL kLS kPS kL2R kR2L);
Lexer l(&file);
auto list = l.Lex();
ASSERT_EQ(2u, list.size());
{
auto& t = list[0];
EXPECT_TRUE(t.IsIdentifier());
EXPECT_EQ(t.source().range.begin.line, 6u);
EXPECT_EQ(t.source().range.begin.column, 7u);
EXPECT_EQ(t.source().range.end.line, 6u);
EXPECT_EQ(t.source().range.end.column, 12u);
EXPECT_EQ(t.to_str(), "ident");
}
{
auto& t = list[1];
EXPECT_TRUE(t.IsEof());
}
}
TEST_F(LexerTest, Skips_Comments_Line) {
Source::File file("", R"(//starts with comment
ident1 //ends with comment
// blank line
ident2)");
Lexer l(&file);
auto list = l.Lex();
ASSERT_EQ(3u, list.size());
{
auto& t = list[0];
EXPECT_TRUE(t.IsIdentifier());
EXPECT_EQ(t.source().range.begin.line, 2u);
EXPECT_EQ(t.source().range.begin.column, 1u);
EXPECT_EQ(t.source().range.end.line, 2u);
EXPECT_EQ(t.source().range.end.column, 7u);
EXPECT_EQ(t.to_str(), "ident1");
}
{
auto& t = list[1];
EXPECT_TRUE(t.IsIdentifier());
EXPECT_EQ(t.source().range.begin.line, 4u);
EXPECT_EQ(t.source().range.begin.column, 2u);
EXPECT_EQ(t.source().range.end.line, 4u);
EXPECT_EQ(t.source().range.end.column, 8u);
EXPECT_EQ(t.to_str(), "ident2");
}
{
auto& t = list[2];
EXPECT_TRUE(t.IsEof());
}
}
TEST_F(LexerTest, Skips_Comments_Unicode) {
Source::File file("", R"(// starts with 🙂🙂🙂
ident1 //ends with 🙂🙂🙂
// blank line
ident2)");
Lexer l(&file);
auto list = l.Lex();
ASSERT_EQ(3u, list.size());
{
auto& t = list[0];
EXPECT_TRUE(t.IsIdentifier());
EXPECT_EQ(t.source().range.begin.line, 2u);
EXPECT_EQ(t.source().range.begin.column, 1u);
EXPECT_EQ(t.source().range.end.line, 2u);
EXPECT_EQ(t.source().range.end.column, 7u);
EXPECT_EQ(t.to_str(), "ident1");
}
{
auto& t = list[1];
EXPECT_TRUE(t.IsIdentifier());
EXPECT_EQ(t.source().range.begin.line, 4u);
EXPECT_EQ(t.source().range.begin.column, 2u);
EXPECT_EQ(t.source().range.end.line, 4u);
EXPECT_EQ(t.source().range.end.column, 8u);
EXPECT_EQ(t.to_str(), "ident2");
}
{
auto& t = list[2];
EXPECT_TRUE(t.IsEof());
}
}
using LineCommentTerminatorTest = testing::TestWithParam<const char*>;
TEST_P(LineCommentTerminatorTest, Terminators) {
// Test that line comments are ended by blankspace characters other than
// space, horizontal tab, left-to-right mark, and right-to-left mark.
auto* c = GetParam();
std::string src = "const// This is a comment";
src += c;
src += "ident";
Source::File file("", src);
Lexer l(&file);
auto is_same_line = [](std::string_view v) {
return v == kSpace || v == kHTab || v == kL2R || v == kR2L;
};
auto list = l.Lex();
ASSERT_EQ(is_same_line(c) ? 2u : 3u, list.size());
size_t idx = 0;
{
auto& t = list[idx++];
EXPECT_TRUE(t.Is(Token::Type::kConst));
EXPECT_EQ(t.source().range.begin.line, 1u);
EXPECT_EQ(t.source().range.begin.column, 1u);
EXPECT_EQ(t.source().range.end.line, 1u);
EXPECT_EQ(t.source().range.end.column, 6u);
}
if (!is_same_line(c)) {
size_t line = is_same_line(c) ? 1u : 2u;
size_t col = is_same_line(c) ? 25u : 1u;
auto& t = list[idx++];
EXPECT_TRUE(t.IsIdentifier());
EXPECT_EQ(t.source().range.begin.line, line);
EXPECT_EQ(t.source().range.begin.column, col);
EXPECT_EQ(t.source().range.end.line, line);
EXPECT_EQ(t.source().range.end.column, col + 5);
EXPECT_EQ(t.to_str(), "ident");
}
{
auto& t = list[idx];
EXPECT_TRUE(t.IsEof());
}
}
INSTANTIATE_TEST_SUITE_P(LexerTest,
LineCommentTerminatorTest,
testing::Values(
// same line
kSpace,
kHTab,
kCR,
kL2R,
kR2L,
// line break
kLF,
kVTab,
kFF,
kNL,
kLS,
kPS));
TEST_F(LexerTest, Skips_Comments_Block) {
Source::File file("", R"(/* comment
text */ident)");
Lexer l(&file);
auto list = l.Lex();
ASSERT_EQ(2u, list.size());
{
auto& t = list[0];
EXPECT_TRUE(t.IsIdentifier());
EXPECT_EQ(t.source().range.begin.line, 2u);
EXPECT_EQ(t.source().range.begin.column, 8u);
EXPECT_EQ(t.source().range.end.line, 2u);
EXPECT_EQ(t.source().range.end.column, 13u);
EXPECT_EQ(t.to_str(), "ident");
}
{
auto& t = list[1];
EXPECT_TRUE(t.IsEof());
}
}
TEST_F(LexerTest, Skips_Comments_Block_Nested) {
Source::File file("", R"(/* comment
text // nested line comments are ignored /* more text
/////**/ */*/ident)");
Lexer l(&file);
auto list = l.Lex();
ASSERT_EQ(2u, list.size());
{
auto& t = list[0];
EXPECT_TRUE(t.IsIdentifier());
EXPECT_EQ(t.source().range.begin.line, 3u);
EXPECT_EQ(t.source().range.begin.column, 14u);
EXPECT_EQ(t.source().range.end.line, 3u);
EXPECT_EQ(t.source().range.end.column, 19u);
EXPECT_EQ(t.to_str(), "ident");
}
{
auto& t = list[1];
EXPECT_TRUE(t.IsEof());
}
}
TEST_F(LexerTest, Skips_Comments_Block_Unterminated) {
// I had to break up the /* because otherwise the clang readability check
// errored out saying it could not find the end of a multi-line comment.
Source::File file("", R"(
/)"
R"(*
abcd)");
Lexer l(&file);
auto list = l.Lex();
ASSERT_EQ(1u, list.size());
auto& t = list[0];
ASSERT_TRUE(t.Is(Token::Type::kError));
EXPECT_EQ(t.to_str(), "unterminated block comment");
EXPECT_EQ(t.source().range.begin.line, 2u);
EXPECT_EQ(t.source().range.begin.column, 3u);
EXPECT_EQ(t.source().range.end.line, 2u);
EXPECT_EQ(t.source().range.end.column, 4u);
}
TEST_F(LexerTest, Null_InBlankspace_IsError) {
Source::File file("", std::string{' ', 0, ' '});
Lexer l(&file);
auto list = l.Lex();
ASSERT_EQ(1u, list.size());
auto& t = list[0];
EXPECT_TRUE(t.IsError());
EXPECT_EQ(t.source().range.begin.line, 1u);
EXPECT_EQ(t.source().range.begin.column, 2u);
EXPECT_EQ(t.source().range.end.line, 1u);
EXPECT_EQ(t.source().range.end.column, 2u);
EXPECT_EQ(t.to_str(), "null character found");
}
TEST_F(LexerTest, Null_InLineComment_IsError) {
Source::File file("", std::string{'/', '/', ' ', 0, ' '});
Lexer l(&file);
auto list = l.Lex();
ASSERT_EQ(1u, list.size());
auto& t = list[0];
EXPECT_TRUE(t.IsError());
EXPECT_EQ(t.source().range.begin.line, 1u);
EXPECT_EQ(t.source().range.begin.column, 4u);
EXPECT_EQ(t.source().range.end.line, 1u);
EXPECT_EQ(t.source().range.end.column, 4u);
EXPECT_EQ(t.to_str(), "null character found");
}
TEST_F(LexerTest, Null_InBlockComment_IsError) {
Source::File file("", std::string{'/', '*', ' ', 0, '*', '/'});
Lexer l(&file);
auto list = l.Lex();
ASSERT_EQ(1u, list.size());
auto& t = list[0];
EXPECT_TRUE(t.IsError());
EXPECT_EQ(t.source().range.begin.line, 1u);
EXPECT_EQ(t.source().range.begin.column, 4u);
EXPECT_EQ(t.source().range.end.line, 1u);
EXPECT_EQ(t.source().range.end.column, 4u);
EXPECT_EQ(t.to_str(), "null character found");
}
TEST_F(LexerTest, Null_InIdentifier_IsError) {
// Try inserting a null in an identifier. Other valid token
// kinds will behave similarly, so use the identifier case
// as a representative.
Source::File file("", std::string{'a', 0, 'c'});
Lexer l(&file);
auto list = l.Lex();
ASSERT_EQ(2u, list.size());
{
auto& t = list[0];
EXPECT_TRUE(t.IsIdentifier());
EXPECT_EQ(t.to_str(), "a");
}
{
auto& t = list[1];
EXPECT_TRUE(t.IsError());
EXPECT_EQ(t.source().range.begin.line, 1u);
EXPECT_EQ(t.source().range.begin.column, 2u);
EXPECT_EQ(t.source().range.end.line, 1u);
EXPECT_EQ(t.source().range.end.column, 2u);
EXPECT_EQ(t.to_str(), "null character found");
}
}
struct FloatData {
const char* input;
double 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();
Source::File file("", params.input);
Lexer l(&file);
auto list = l.Lex();
ASSERT_EQ(2u, list.size());
{
auto& t = list[0];
if (std::string(params.input).back() == 'f') {
EXPECT_TRUE(t.Is(Token::Type::kFloatLiteral_F));
} else if (std::string(params.input).back() == 'h') {
EXPECT_TRUE(t.Is(Token::Type::kFloatLiteral_H));
} else {
EXPECT_TRUE(t.Is(Token::Type::kFloatLiteral));
}
EXPECT_EQ(t.to_f64(), params.result);
EXPECT_EQ(t.source().range.begin.line, 1u);
EXPECT_EQ(t.source().range.begin.column, 1u);
EXPECT_EQ(t.source().range.end.line, 1u);
EXPECT_EQ(t.source().range.end.column, 1u + strlen(params.input));
}
{
auto& t = list[1];
EXPECT_TRUE(t.IsEof());
}
}
INSTANTIATE_TEST_SUITE_P(LexerTest,
FloatTest,
testing::Values(
// No decimal, with 'f' suffix
FloatData{"0f", 0.0},
FloatData{"1f", 1.0},
// No decimal, with 'h' suffix
FloatData{"0h", 0.0},
FloatData{"1h", 1.0},
// Zero, with decimal.
FloatData{"0.0", 0.0},
FloatData{"0.", 0.0},
FloatData{".0", 0.0},
// Zero, with decimal and 'f' suffix
FloatData{"0.0f", 0.0},
FloatData{"0.f", 0.0},
FloatData{".0f", 0.0},
// Zero, with decimal and 'h' suffix
FloatData{"0.0h", 0.0},
FloatData{"0.h", 0.0},
FloatData{".0h", 0.0},
// Non-zero with decimal
FloatData{"5.7", 5.7},
FloatData{"5.", 5.},
FloatData{".7", .7},
// Non-zero with decimal and 'f' suffix
FloatData{"5.7f", static_cast<double>(5.7f)},
FloatData{"5.f", static_cast<double>(5.f)},
FloatData{".7f", static_cast<double>(.7f)},
// Non-zero with decimal and 'h' suffix
FloatData{"5.7h", static_cast<double>(f16::Quantize(5.7f))},
FloatData{"5.h", static_cast<double>(f16::Quantize(5.f))},
FloatData{".7h", static_cast<double>(f16::Quantize(.7f))},
// No decimal, with exponent
FloatData{"1e5", 1e5},
FloatData{"1E5", 1e5},
FloatData{"1e-5", 1e-5},
FloatData{"1E-5", 1e-5},
// No decimal, with exponent and 'f' suffix
FloatData{"1e5f", static_cast<double>(1e5f)},
FloatData{"1E5f", static_cast<double>(1e5f)},
FloatData{"1e-5f", static_cast<double>(1e-5f)},
FloatData{"1E-5f", static_cast<double>(1e-5f)},
// No decimal, with exponent and 'h' suffix
FloatData{"6e4h", static_cast<double>(f16::Quantize(6e4f))},
FloatData{"6E4h", static_cast<double>(f16::Quantize(6e4f))},
FloatData{"1e-5h", static_cast<double>(f16::Quantize(1e-5f))},
FloatData{"1E-5h", static_cast<double>(f16::Quantize(1e-5f))},
// With decimal and exponents
FloatData{"0.2e+12", 0.2e12},
FloatData{"1.2e-5", 1.2e-5},
FloatData{"2.57e23", 2.57e23},
FloatData{"2.5e+0", 2.5},
FloatData{"2.5e-0", 2.5},
// With decimal and exponents and 'f' suffix
FloatData{"0.2e+12f", static_cast<double>(0.2e12f)},
FloatData{"1.2e-5f", static_cast<double>(1.2e-5f)},
FloatData{"2.57e23f", static_cast<double>(2.57e23f)},
FloatData{"2.5e+0f", static_cast<double>(2.5f)},
FloatData{"2.5e-0f", static_cast<double>(2.5f)},
// With decimal and exponents and 'h' suffix
FloatData{"0.2e+5h", static_cast<double>(f16::Quantize(0.2e5f))},
FloatData{"1.2e-5h", static_cast<double>(f16::Quantize(1.2e-5f))},
FloatData{"6.55e4h", static_cast<double>(f16::Quantize(6.55e4f))},
FloatData{"2.5e+0h", static_cast<double>(f16::Quantize(2.5f))},
FloatData{"2.5e-0h", static_cast<double>(f16::Quantize(2.5f))},
// Quantization
FloatData{"3.141592653589793", 3.141592653589793}, // no quantization
FloatData{"3.141592653589793f", 3.1415927410125732}, // f32 quantized
FloatData{"3.141592653589793h", 3.140625} // f16 quantized
));
using FloatTest_Invalid = testing::TestWithParam<const char*>;
TEST_P(FloatTest_Invalid, Handles) {
Source::File file("", GetParam());
Lexer l(&file);
auto list = l.Lex();
ASSERT_FALSE(list.empty());
auto& t = list[0];
EXPECT_FALSE(t.Is(Token::Type::kFloatLiteral) || t.Is(Token::Type::kFloatLiteral_F) ||
t.Is(Token::Type::kFloatLiteral_H));
}
INSTANTIATE_TEST_SUITE_P(LexerTest,
FloatTest_Invalid,
testing::Values(".",
// Need a mantissa digit
".e5",
".E5",
// Need exponent digits
".e",
".e+",
".e-",
".E",
".e+",
".e-",
// Overflow
"2.5e+256f",
"6.5520e+4h",
// Decimal exponent must immediately
// follow the 'e'.
"2.5e 12",
"2.5e +12",
"2.5e -12",
"2.5e+ 123",
"2.5e- 123",
"2.5E 12",
"2.5E +12",
"2.5E -12",
"2.5E+ 123",
"2.5E- 123"));
using AsciiIdentifierTest = testing::TestWithParam<const char*>;
TEST_P(AsciiIdentifierTest, Parse) {
Source::File file("", GetParam());
Lexer l(&file);
auto list = l.Lex();
ASSERT_EQ(2u, list.size());
{
auto& t = list[0];
EXPECT_TRUE(t.IsIdentifier());
EXPECT_EQ(t.source().range.begin.line, 1u);
EXPECT_EQ(t.source().range.begin.column, 1u);
EXPECT_EQ(t.source().range.end.line, 1u);
EXPECT_EQ(t.source().range.end.column, 1u + strlen(GetParam()));
EXPECT_EQ(t.to_str(), GetParam());
}
{
auto& t = list[1];
EXPECT_TRUE(t.IsEof());
}
}
INSTANTIATE_TEST_SUITE_P(LexerTest,
AsciiIdentifierTest,
testing::Values("a",
"test",
"test01",
"test_",
"_test",
"test_01",
"ALLCAPS",
"MiXeD_CaSe",
"abcdefghijklmnopqrstuvwxyz",
"ABCDEFGHIJKLMNOPQRSTUVWXYZ",
"alldigits_0123456789"));
struct UnicodeCase {
const char* utf8;
size_t count;
};
using ValidUnicodeIdentifierTest = testing::TestWithParam<UnicodeCase>;
TEST_P(ValidUnicodeIdentifierTest, Parse) {
Source::File file("", GetParam().utf8);
Lexer l(&file);
auto list = l.Lex();
ASSERT_EQ(2u, list.size());
{
auto& t = list[0];
EXPECT_TRUE(t.IsIdentifier());
EXPECT_EQ(t.source().range.begin.line, 1u);
EXPECT_EQ(t.source().range.begin.column, 1u);
EXPECT_EQ(t.source().range.end.line, 1u);
EXPECT_EQ(t.source().range.end.column, 1u + GetParam().count);
EXPECT_EQ(t.to_str(), GetParam().utf8);
}
{
auto& t = list[1];
EXPECT_TRUE(t.IsEof());
}
}
INSTANTIATE_TEST_SUITE_P(
LexerTest,
ValidUnicodeIdentifierTest,
testing::ValuesIn({
UnicodeCase{// "𝐢𝐝𝐞𝐧𝐭𝐢𝐟𝐢𝐞𝐫"
"\xf0\x9d\x90\xa2\xf0\x9d\x90\x9d\xf0\x9d\x90\x9e\xf0\x9d"
"\x90\xa7\xf0\x9d\x90\xad\xf0\x9d\x90\xa2\xf0\x9d\x90\x9f"
"\xf0\x9d\x90\xa2\xf0\x9d\x90\x9e\xf0\x9d\x90\xab",
40},
UnicodeCase{// "𝑖𝑑𝑒𝑛𝑡𝑖𝑓𝑖𝑒𝑟"
"\xf0\x9d\x91\x96\xf0\x9d\x91\x91\xf0\x9d\x91\x92\xf0\x9d"
"\x91\x9b\xf0\x9d\x91\xa1\xf0\x9d\x91\x96\xf0\x9d\x91\x93"
"\xf0\x9d\x91\x96\xf0\x9d\x91\x92\xf0\x9d\x91\x9f",
40},
UnicodeCase{// "identifier"
"\xef\xbd\x89\xef\xbd\x84\xef\xbd\x85\xef\xbd\x8e\xef\xbd\x94\xef"
"\xbd\x89\xef\xbd\x86\xef\xbd\x89\xef\xbd\x85\xef\xbd\x92",
30},
UnicodeCase{// "𝕚𝕕𝕖𝕟𝕥𝕚𝕗𝕚𝕖𝕣𝟙𝟚𝟛"
"\xf0\x9d\x95\x9a\xf0\x9d\x95\x95\xf0\x9d\x95\x96\xf0\x9d"
"\x95\x9f\xf0\x9d\x95\xa5\xf0\x9d\x95\x9a\xf0\x9d\x95\x97"
"\xf0\x9d\x95\x9a\xf0\x9d\x95\x96\xf0\x9d\x95\xa3\xf0\x9d"
"\x9f\x99\xf0\x9d\x9f\x9a\xf0\x9d\x9f\x9b",
52},
UnicodeCase{// "𝖎𝖉𝖊𝖓𝖙𝖎𝖋𝖎𝖊𝖗123"
"\xf0\x9d\x96\x8e\xf0\x9d\x96\x89\xf0\x9d\x96\x8a\xf0\x9d\x96\x93"
"\xf0\x9d\x96\x99\xf0\x9d\x96\x8e\xf0\x9d\x96\x8b\xf0\x9d\x96\x8e"
"\xf0\x9d\x96\x8a\xf0\x9d\x96\x97\x31\x32\x33",
43},
}));
using InvalidUnicodeIdentifierTest = testing::TestWithParam<const char*>;
TEST_P(InvalidUnicodeIdentifierTest, Parse) {
Source::File file("", GetParam());
Lexer l(&file);
auto list = l.Lex();
ASSERT_FALSE(list.empty());
auto& t = list[0];
EXPECT_TRUE(t.IsError());
EXPECT_EQ(t.source().range.begin.line, 1u);
EXPECT_EQ(t.source().range.begin.column, 1u);
EXPECT_EQ(t.source().range.end.line, 1u);
EXPECT_EQ(t.source().range.end.column, 1u);
EXPECT_EQ(t.to_str(), "invalid UTF-8");
}
INSTANTIATE_TEST_SUITE_P(LexerTest,
InvalidUnicodeIdentifierTest,
testing::ValuesIn({
"\x80\x80\x80\x80", // 10000000
"\x81\x80\x80\x80", // 10000001
"\x8f\x80\x80\x80", // 10001111
"\x90\x80\x80\x80", // 10010000
"\x91\x80\x80\x80", // 10010001
"\x9f\x80\x80\x80", // 10011111
"\xa0\x80\x80\x80", // 10100000
"\xa1\x80\x80\x80", // 10100001
"\xaf\x80\x80\x80", // 10101111
"\xb0\x80\x80\x80", // 10110000
"\xb1\x80\x80\x80", // 10110001
"\xbf\x80\x80\x80", // 10111111
"\xc0\x80\x80\x80", // 11000000
"\xc1\x80\x80\x80", // 11000001
"\xf5\x80\x80\x80", // 11110101
"\xf6\x80\x80\x80", // 11110110
"\xf7\x80\x80\x80", // 11110111
"\xf8\x80\x80\x80", // 11111000
"\xfe\x80\x80\x80", // 11111110
"\xff\x80\x80\x80", // 11111111
"\xd0", // 2-bytes, missing second byte
"\xe8\x8f", // 3-bytes, missing third byte
"\xf4\x8f\x8f", // 4-bytes, missing fourth byte
"\xd0\x7f", // 2-bytes, second byte MSB unset
"\xe8\x7f\x8f", // 3-bytes, second byte MSB unset
"\xe8\x8f\x7f", // 3-bytes, third byte MSB unset
"\xf4\x7f\x8f\x8f", // 4-bytes, second byte MSB unset
"\xf4\x8f\x7f\x8f", // 4-bytes, third byte MSB unset
"\xf4\x8f\x8f\x7f", // 4-bytes, fourth byte MSB unset
}));
TEST_F(LexerTest, IdentifierTest_SingleUnderscoreDoesNotMatch) {
Source::File file("", "_");
Lexer l(&file);
auto list = l.Lex();
ASSERT_FALSE(list.empty());
auto& t = list[0];
EXPECT_FALSE(t.IsIdentifier());
}
TEST_F(LexerTest, IdentifierTest_DoesNotStartWithDoubleUnderscore) {
Source::File file("", "__test");
Lexer l(&file);
auto list = l.Lex();
ASSERT_FALSE(list.empty());
auto& t = list[0];
EXPECT_FALSE(t.IsIdentifier());
}
TEST_F(LexerTest, IdentifierTest_DoesNotStartWithNumber) {
Source::File file("", "01test");
Lexer l(&file);
auto list = l.Lex();
EXPECT_FALSE(list.empty());
auto& t = list[0];
EXPECT_FALSE(t.IsIdentifier());
}
////////////////////////////////////////////////////////////////////////////////
// ParseIntegerTest
////////////////////////////////////////////////////////////////////////////////
struct ParseIntegerCase {
const char* input;
int64_t result;
};
inline std::ostream& operator<<(std::ostream& out, ParseIntegerCase data) {
out << std::string(data.input);
return out;
}
using ParseIntegerTest = testing::TestWithParam<std::tuple<char, ParseIntegerCase>>;
TEST_P(ParseIntegerTest, Parse) {
auto suffix = std::get<0>(GetParam());
auto params = std::get<1>(GetParam());
Source::File file("", params.input);
Lexer l(&file);
auto list = l.Lex();
ASSERT_FALSE(list.empty());
auto& t = list[0];
switch (suffix) {
case 'i':
EXPECT_TRUE(t.Is(Token::Type::kIntLiteral_I));
break;
case 'u':
EXPECT_TRUE(t.Is(Token::Type::kIntLiteral_U));
break;
case 0:
EXPECT_TRUE(t.Is(Token::Type::kIntLiteral));
break;
}
EXPECT_EQ(t.source().range.begin.line, 1u);
EXPECT_EQ(t.source().range.begin.column, 1u);
EXPECT_EQ(t.source().range.end.line, 1u);
EXPECT_EQ(t.source().range.end.column, 1u + strlen(params.input));
ASSERT_FALSE(t.IsError()) << t.to_str();
EXPECT_EQ(t.to_i64(), params.result);
}
INSTANTIATE_TEST_SUITE_P(Dec_AInt,
ParseIntegerTest,
testing::Combine(testing::Values('\0'), // No suffix
testing::ValuesIn(std::vector<ParseIntegerCase>{
{"0", 0},
{"2", 2},
{"123", 123},
{"2147483647", 2147483647},
})));
INSTANTIATE_TEST_SUITE_P(Dec_u32,
ParseIntegerTest,
testing::Combine(testing::Values('u'), // Suffix
testing::ValuesIn(std::vector<ParseIntegerCase>{
{"0u", 0},
{"123u", 123},
{"4294967295u", 4294967295ll},
})));
INSTANTIATE_TEST_SUITE_P(Dec_i32,
ParseIntegerTest,
testing::Combine(testing::Values('i'), // Suffix
testing::ValuesIn(std::vector<ParseIntegerCase>{
{"0i", 0u},
{"123i", 123},
{"2147483647i", 2147483647},
})));
INSTANTIATE_TEST_SUITE_P(Hex_AInt,
ParseIntegerTest,
testing::Combine(testing::Values('\0'), // No suffix
testing::ValuesIn(std::vector<ParseIntegerCase>{
{"0x0", 0},
{"0X0", 0},
{"0x42", 66},
{"0X42", 66},
{"0xeF1Abc9", 0xeF1Abc9},
{"0XeF1Abc9", 0xeF1Abc9},
{"0x80000000", 0x80000000},
{"0X80000000", 0X80000000},
{"0x7FFFFFFF", 0x7fffffff},
{"0X7FFFFFFF", 0x7fffffff},
{"0x7fffffff", 0x7fffffff},
{"0x7fffffff", 0x7fffffff},
{"0x7FfFfFfF", 0x7fffffff},
{"0X7FfFfFfF", 0x7fffffff},
{"0x7fffffffffffffff", 0x7fffffffffffffffll},
})));
INSTANTIATE_TEST_SUITE_P(Hex_u32,
ParseIntegerTest,
testing::Combine(testing::Values('u'), // Suffix
testing::ValuesIn(std::vector<ParseIntegerCase>{
{"0x0u", 0},
{"0x42u", 66},
{"0xeF1Abc9u", 250719177},
{"0xFFFFFFFFu", 0xffffffff},
{"0XFFFFFFFFu", 0xffffffff},
{"0xffffffffu", 0xffffffff},
{"0Xffffffffu", 0xffffffff},
{"0xfFfFfFfFu", 0xffffffff},
{"0XfFfFfFfFu", 0xffffffff},
})));
INSTANTIATE_TEST_SUITE_P(Hex_i32,
ParseIntegerTest,
testing::Combine(testing::Values('i'), // Suffix
testing::ValuesIn(std::vector<ParseIntegerCase>{
{"0x0i", 0},
{"0x42i", 66},
{"0xeF1Abc9i", 250719177},
{"0x7FFFFFFFi", 0x7fffffff},
{"0X7FFFFFFFi", 0x7fffffff},
{"0x7fffffffi", 0x7fffffff},
{"0X7fffffffi", 0x7fffffff},
{"0x7FfFfFfFi", 0x7fffffff},
{"0X7FfFfFfFi", 0x7fffffff},
})));
////////////////////////////////////////////////////////////////////////////////
// ParseIntegerTest_CannotBeRepresented
////////////////////////////////////////////////////////////////////////////////
using ParseIntegerTest_CannotBeRepresented =
testing::TestWithParam<std::tuple<const char*, const char*>>;
TEST_P(ParseIntegerTest_CannotBeRepresented, Parse) {
auto type = std::get<0>(GetParam());
auto source = std::get<1>(GetParam());
Source::File file("", source);
Lexer l(&file);
auto list = l.Lex();
ASSERT_FALSE(list.empty());
auto& t = list[0];
EXPECT_TRUE(t.Is(Token::Type::kError));
auto expect = "value cannot be represented as '" + std::string(type) + "'";
EXPECT_EQ(t.to_str(), expect);
}
INSTANTIATE_TEST_SUITE_P(AbstractInt,
ParseIntegerTest_CannotBeRepresented,
testing::Combine(testing::Values("abstract-int"),
testing::Values("9223372036854775808",
"0xFFFFFFFFFFFFFFFF",
"0xffffffffffffffff",
"0x8000000000000000")));
INSTANTIATE_TEST_SUITE_P(i32,
ParseIntegerTest_CannotBeRepresented,
testing::Combine(testing::Values("i32"), // type
testing::Values("2147483648i")));
INSTANTIATE_TEST_SUITE_P(u32,
ParseIntegerTest_CannotBeRepresented,
testing::Combine(testing::Values("u32"), // type
testing::Values("4294967296u")));
////////////////////////////////////////////////////////////////////////////////
// ParseIntegerTest_LeadingZeros
////////////////////////////////////////////////////////////////////////////////
using ParseIntegerTest_LeadingZeros = testing::TestWithParam<const char*>;
TEST_P(ParseIntegerTest_LeadingZeros, Parse) {
Source::File file("", GetParam());
Lexer l(&file);
auto list = l.Lex();
ASSERT_FALSE(list.empty());
auto& t = list[0];
EXPECT_TRUE(t.Is(Token::Type::kError));
EXPECT_EQ(t.to_str(), "integer literal cannot have leading 0s");
}
INSTANTIATE_TEST_SUITE_P(LeadingZero,
ParseIntegerTest_LeadingZeros,
testing::Values("01234", "0000", "00u"));
////////////////////////////////////////////////////////////////////////////////
// ParseIntegerTest_NoSignificantDigits
////////////////////////////////////////////////////////////////////////////////
using ParseIntegerTest_NoSignificantDigits = testing::TestWithParam<const char*>;
TEST_P(ParseIntegerTest_NoSignificantDigits, Parse) {
Source::File file("", GetParam());
Lexer l(&file);
auto list = l.Lex();
ASSERT_FALSE(list.empty());
auto& t = list[0];
EXPECT_TRUE(t.Is(Token::Type::kError));
EXPECT_EQ(t.to_str(), "integer or float hex literal has no significant digits");
}
INSTANTIATE_TEST_SUITE_P(LeadingZero,
ParseIntegerTest_NoSignificantDigits,
testing::Values("0x", "0X", "0xu", "0Xu", "0xi", "0Xi"));
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();
Source::File file("", params.input);
Lexer l(&file);
auto list = l.Lex();
ASSERT_GE(list.size(), 2u);
{
auto& t = list[0];
EXPECT_TRUE(t.Is(params.type));
EXPECT_EQ(t.source().range.begin.line, 1u);
EXPECT_EQ(t.source().range.begin.column, 1u);
EXPECT_EQ(t.source().range.end.line, 1u);
EXPECT_EQ(t.source().range.end.column, 1u + strlen(params.input));
}
{
auto& t = list[1];
EXPECT_EQ(t.source().range.begin.column, 1 + std::string(params.input).size());
}
}
INSTANTIATE_TEST_SUITE_P(LexerTest,
PunctuationTest,
testing::Values(TokenData{"&", Token::Type::kAnd},
TokenData{"->", Token::Type::kArrow},
TokenData{"@", Token::Type::kAttr},
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::kLessThan},
TokenData{"<=", Token::Type::kLessThanEqual},
TokenData{"<<", Token::Type::kShiftLeft},
TokenData{"%", Token::Type::kMod},
TokenData{"!=", Token::Type::kNotEqual},
TokenData{"-", Token::Type::kMinus},
TokenData{".", Token::Type::kPeriod},
TokenData{"+", Token::Type::kPlus},
TokenData{"++", Token::Type::kPlusPlus},
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::kTilde},
TokenData{"_", Token::Type::kUnderscore},
TokenData{"^", Token::Type::kXor},
TokenData{"+=", Token::Type::kPlusEqual},
TokenData{"-=", Token::Type::kMinusEqual},
TokenData{"*=", Token::Type::kTimesEqual},
TokenData{"/=", Token::Type::kDivisionEqual},
TokenData{"%=", Token::Type::kModuloEqual},
TokenData{"&=", Token::Type::kAndEqual},
TokenData{"|=", Token::Type::kOrEqual},
TokenData{"^=", Token::Type::kXorEqual},
TokenData{">>=", Token::Type::kShiftRightEqual},
TokenData{"<<=", Token::Type::kShiftLeftEqual}));
using SplittablePunctuationTest = testing::TestWithParam<TokenData>;
TEST_P(SplittablePunctuationTest, Parses) {
auto params = GetParam();
Source::File file("", params.input);
Lexer l(&file);
auto list = l.Lex();
ASSERT_GE(list.size(), 3u);
{
auto& t = list[0];
EXPECT_TRUE(t.Is(params.type));
EXPECT_EQ(t.source().range.begin.line, 1u);
EXPECT_EQ(t.source().range.begin.column, 1u);
EXPECT_EQ(t.source().range.end.line, 1u);
EXPECT_EQ(t.source().range.end.column, 1u + strlen(params.input));
}
{
auto& t = list[1];
EXPECT_TRUE(t.Is(Token::Type::kPlaceholder));
EXPECT_EQ(t.source().range.begin.line, 1u);
EXPECT_EQ(t.source().range.begin.column, 2u);
EXPECT_EQ(t.source().range.end.line, 1u);
EXPECT_EQ(t.source().range.end.column, 1u + strlen(params.input));
}
{
auto& t = list[2];
EXPECT_EQ(t.source().range.begin.column, 1 + std::string(params.input).size());
}
}
INSTANTIATE_TEST_SUITE_P(LexerTest,
SplittablePunctuationTest,
testing::Values(TokenData{"&&", Token::Type::kAndAnd},
TokenData{">=", Token::Type::kGreaterThanEqual},
TokenData{"--", Token::Type::kMinusMinus},
TokenData{">>", Token::Type::kShiftRight}));
using KeywordTest = testing::TestWithParam<TokenData>;
TEST_P(KeywordTest, Parses) {
auto params = GetParam();
Source::File file("", params.input);
Lexer l(&file);
auto list = l.Lex();
ASSERT_GE(list.size(), 2u);
auto& t = list[0];
EXPECT_TRUE(t.Is(params.type)) << params.input;
EXPECT_EQ(t.source().range.begin.line, 1u);
EXPECT_EQ(t.source().range.begin.column, 1u);
EXPECT_EQ(t.source().range.end.line, 1u);
EXPECT_EQ(t.source().range.end.column, 1u + strlen(params.input));
EXPECT_EQ(list[1].source().range.begin.column, 1 + std::string(params.input).size());
}
INSTANTIATE_TEST_SUITE_P(
LexerTest,
KeywordTest,
testing::Values(TokenData{"array", Token::Type::kArray},
TokenData{"bitcast", Token::Type::kBitcast},
TokenData{"bool", Token::Type::kBool},
TokenData{"break", Token::Type::kBreak},
TokenData{"case", Token::Type::kCase},
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{"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{"i32", Token::Type::kI32},
TokenData{"if", Token::Type::kIf},
TokenData{"let", Token::Type::kLet},
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{"override", Token::Type::kOverride},
TokenData{"ptr", Token::Type::kPtr},
TokenData{"return", Token::Type::kReturn},
TokenData{"sampler", Token::Type::kSampler},
TokenData{"sampler_comparison", Token::Type::kComparisonSampler},
TokenData{"static_assert", Token::Type::kStaticAssert},
TokenData{"struct", Token::Type::kStruct},
TokenData{"switch", Token::Type::kSwitch},
TokenData{"texture_1d", Token::Type::kTextureSampled1d},
TokenData{"texture_2d", Token::Type::kTextureSampled2d},
TokenData{"texture_2d_array", Token::Type::kTextureSampled2dArray},
TokenData{"texture_3d", Token::Type::kTextureSampled3d},
TokenData{"texture_cube", Token::Type::kTextureSampledCube},
TokenData{"texture_cube_array", Token::Type::kTextureSampledCubeArray},
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{"texture_depth_multisampled_2d",
Token::Type::kTextureDepthMultisampled2d},
TokenData{"texture_multisampled_2d", Token::Type::kTextureMultisampled2d},
TokenData{"texture_storage_1d", Token::Type::kTextureStorage1d},
TokenData{"texture_storage_2d", Token::Type::kTextureStorage2d},
TokenData{"texture_storage_2d_array", Token::Type::kTextureStorage2dArray},
TokenData{"texture_storage_3d", Token::Type::kTextureStorage3d},
TokenData{"true", Token::Type::kTrue},
TokenData{"type", Token::Type::kType},
TokenData{"u32", Token::Type::kU32},
TokenData{"var", Token::Type::kVar},
TokenData{"vec2", Token::Type::kVec2},
TokenData{"vec3", Token::Type::kVec3},
TokenData{"vec4", Token::Type::kVec4},
TokenData{"while", Token::Type::kWhile}));
} // namespace
} // namespace tint::reader::wgsl