Chiebot-Mirror
/
protobuf
mirror of https://github.com/protocolbuffers/protobuf.git
8
0
Fork 0
Code Issues Projects Releases Wiki Activity
Protocol Buffers - Google's data interchange format (grpc依赖) https://developers.google.com/protocol-buffers/
You can not select more than 25 topics Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
2547 Commits
201 Branches
346 Tags
254 MiB
 
 
 
 
 
 
Tag: Branch: Tree: cb5be728d7
Branches Tags
${ item.name }
Create tag ${ searchTerm }
Create branch ${ searchTerm }
from 'cb5be728d7'
${ noResults }
protobuf/upb/io/tokenizer_test.cc

1253 lines
44 KiB
Raw Blame History

/*
* Copyright (c) 2009-2022, Google LLC
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* * Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* * Neither the name of Google LLC nor the
* names of its contributors may be used to endorse or promote products
* derived from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL Google LLC BE LIABLE FOR ANY DIRECT,
* INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
* ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#include "upb/io/tokenizer.h"
#include "gtest/gtest.h"
#include "absl/strings/escaping.h"
#include "absl/strings/str_format.h"
#include "upb/internal/unicode.h"
#include "upb/io/chunked_input_stream.h"
#include "upb/io/string.h"
#include "upb/upb.hpp"
// Must be last.
#include "upb/port_def.inc"
namespace proto2 {
namespace io {
namespace {
#ifndef arraysize
#define arraysize(a) (sizeof(a) / sizeof(a[0]))
#endif
static bool StringEquals(const char* a, const char* b) {
return strcmp(a, b) == 0;
}
// ===================================================================
// Data-Driven Test Infrastructure
// TODO(kenton): This is copied from coded_stream_unittest. This is
// temporary until these features are integrated into gUnit itself.
// TEST_1D and TEST_2D are macros I'd eventually like to see added to
// gUnit. These macros can be used to declare tests which should be
// run multiple times, once for each item in some input array. TEST_1D
// tests all cases in a single input array. TEST_2D tests all
// combinations of cases from two arrays. The arrays must be statically
// defined such that the arraysize() macro works on them. Example:
//
// int kCases[] = {1, 2, 3, 4}
// TEST_1D(MyFixture, MyTest, kCases) {
// EXPECT_GT(kCases_case, 0);
// }
//
// This test iterates through the numbers 1, 2, 3, and 4 and tests that
// they are all grater than zero. In case of failure, the exact case
// which failed will be printed. The case type must be printable using
// ostream::operator<<.
#define TEST_1D(FIXTURE, NAME, CASES) \
class FIXTURE##_##NAME##_DD : public FIXTURE { \
protected: \
template <typename CaseType> \
void DoSingleCase(const CaseType& CASES##_case); \
}; \
\
TEST_F(FIXTURE##_##NAME##_DD, NAME) { \
for (size_t i = 0; i < arraysize(CASES); i++) { \
SCOPED_TRACE(testing::Message() \
<< #CASES " case #" << i << ": " << CASES[i]); \
DoSingleCase(CASES[i]); \
} \
} \
\
template <typename CaseType> \
void FIXTURE##_##NAME##_DD::DoSingleCase(const CaseType& CASES##_case)
#define TEST_2D(FIXTURE, NAME, CASES1, CASES2) \
class FIXTURE##_##NAME##_DD : public FIXTURE { \
protected: \
template <typename CaseType1, typename CaseType2> \
void DoSingleCase(const CaseType1& CASES1##_case, \
const CaseType2& CASES2##_case); \
}; \
\
TEST_F(FIXTURE##_##NAME##_DD, NAME) { \
for (size_t i = 0; i < arraysize(CASES1); i++) { \
for (size_t j = 0; j < arraysize(CASES2); j++) { \
SCOPED_TRACE(testing::Message() \
<< #CASES1 " case #" << i << ": " << CASES1[i] << ", " \
<< #CASES2 " case #" << j << ": " << CASES2[j]); \
DoSingleCase(CASES1[i], CASES2[j]); \
} \
} \
} \
\
template <typename CaseType1, typename CaseType2> \
void FIXTURE##_##NAME##_DD::DoSingleCase(const CaseType1& CASES1##_case, \
const CaseType2& CASES2##_case)
// -------------------------------------------------------------------
// In C, a size of zero from ZCIS_Next() means EOF so we can't play the same
// trick here that happens in the C++ version. Use ChunkedInputStream instead.
upb_ZeroCopyInputStream* TestInputStream(const void* data, size_t size,
size_t block_size, upb_Arena* arena) {
return upb_ChunkedInputStream_New(data, size, block_size, arena);
}
// -------------------------------------------------------------------
// We test each operation over a variety of block sizes to insure that
// we test cases where reads cross buffer boundaries as well as cases
// where they don't. This is sort of a brute-force approach to this,
// but it's easy to write and easy to understand.
const int kBlockSizes[] = {1, 2, 3, 5, 7, 13, 32, 1024};
class TokenizerTest : public testing::Test {
protected:
// For easy testing.
uint64_t ParseInteger(const std::string& text) {
uint64_t result;
EXPECT_TRUE(upb_Parse_Integer(text.data(), UINT64_MAX, &result))
<< "'" << text << "'";
return result;
}
};
// ===================================================================
// These tests causes gcc 3.3.5 (and earlier?) to give the cryptic error:
// "sorry, unimplemented: `method_call_expr' not supported by dump_expr"
#if !defined(__GNUC__) || __GNUC__ > 3 || (__GNUC__ == 3 && __GNUC_MINOR__ > 3)
// In each test case, the entire input text should parse as a single token
// of the given type.
struct SimpleTokenCase {
std::string input;
upb_TokenType type;
};
inline std::ostream& operator<<(std::ostream& out,
const SimpleTokenCase& test_case) {
return out << absl::CEscape(test_case.input);
}
SimpleTokenCase kSimpleTokenCases[] = {
// Test identifiers.
{"hello", kUpb_TokenType_Identifier},
// Test integers.
{"123", kUpb_TokenType_Integer},
{"0xab6", kUpb_TokenType_Integer},
{"0XAB6", kUpb_TokenType_Integer},
{"0X1234567", kUpb_TokenType_Integer},
{"0x89abcdef", kUpb_TokenType_Integer},
{"0x89ABCDEF", kUpb_TokenType_Integer},
{"01234567", kUpb_TokenType_Integer},
// Test floats.
{"123.45", kUpb_TokenType_Float},
{"1.", kUpb_TokenType_Float},
{"1e3", kUpb_TokenType_Float},
{"1E3", kUpb_TokenType_Float},
{"1e-3", kUpb_TokenType_Float},
{"1e+3", kUpb_TokenType_Float},
{"1.e3", kUpb_TokenType_Float},
{"1.2e3", kUpb_TokenType_Float},
{".1", kUpb_TokenType_Float},
{".1e3", kUpb_TokenType_Float},
{".1e-3", kUpb_TokenType_Float},
{".1e+3", kUpb_TokenType_Float},
// Test strings.
{"'hello'", kUpb_TokenType_String},
{"\"foo\"", kUpb_TokenType_String},
{"'a\"b'", kUpb_TokenType_String},
{"\"a'b\"", kUpb_TokenType_String},
{"'a\\'b'", kUpb_TokenType_String},
{"\"a\\\"b\"", kUpb_TokenType_String},
{"'\\xf'", kUpb_TokenType_String},
{"'\\0'", kUpb_TokenType_String},
// Test symbols.
{"+", kUpb_TokenType_Symbol},
{".", kUpb_TokenType_Symbol},
};
TEST_2D(TokenizerTest, SimpleTokens, kSimpleTokenCases, kBlockSizes) {
upb::Arena arena;
// Set up the tokenizer.
auto input = TestInputStream(kSimpleTokenCases_case.input.data(),
kSimpleTokenCases_case.input.size(),
kBlockSizes_case, arena.ptr());
auto t = upb_Tokenizer_New(NULL, 0, input, 0, arena.ptr());
// Before Next() is called, the initial token should always be TYPE_START.
EXPECT_EQ(upb_Tokenizer_Type(t), kUpb_TokenType_Start);
EXPECT_EQ(upb_Tokenizer_Line(t), 0);
EXPECT_EQ(upb_Tokenizer_Column(t), 0);
EXPECT_EQ(upb_Tokenizer_EndColumn(t), 0);
EXPECT_TRUE(StringEquals(upb_Tokenizer_TextData(t), ""));
// Parse the token.
EXPECT_TRUE(upb_Tokenizer_Next(t, NULL));
// Check that it has the right type.
EXPECT_EQ(upb_Tokenizer_Type(t), kSimpleTokenCases_case.type);
// Check that it contains the complete input text.
EXPECT_TRUE(StringEquals(upb_Tokenizer_TextData(t),
kSimpleTokenCases_case.input.data()));
// Check that it is located at the beginning of the input
EXPECT_EQ(upb_Tokenizer_Line(t), 0);
EXPECT_EQ(upb_Tokenizer_Column(t), 0);
EXPECT_EQ(upb_Tokenizer_EndColumn(t), kSimpleTokenCases_case.input.size());
upb_Status status;
upb_Status_Clear(&status);
// There should be no more input and no errors..
EXPECT_FALSE(upb_Tokenizer_Next(t, &status));
EXPECT_TRUE(upb_Status_IsOk(&status));
// After Next() returns false, the token should have type TYPE_END.
EXPECT_EQ(upb_Tokenizer_Type(t), kUpb_TokenType_End);
EXPECT_EQ(upb_Tokenizer_Line(t), 0);
EXPECT_EQ(upb_Tokenizer_Column(t), kSimpleTokenCases_case.input.size());
EXPECT_EQ(upb_Tokenizer_EndColumn(t), kSimpleTokenCases_case.input.size());
EXPECT_TRUE(StringEquals(upb_Tokenizer_TextData(t), ""));
}
TEST_1D(TokenizerTest, FloatSuffix, kBlockSizes) {
// Test the "allow_f_after_float" option.
// Set up the tokenizer.
upb::Arena arena;
const char* text = "1f 2.5f 6e3f 7F";
auto input =
TestInputStream(text, strlen(text), kBlockSizes_case, arena.ptr());
const int options = kUpb_TokenizerOption_AllowFAfterFloat;
auto t = upb_Tokenizer_New(NULL, 0, input, options, arena.ptr());
// Advance through tokens and check that they are parsed as expected.
EXPECT_TRUE(upb_Tokenizer_Next(t, NULL));
EXPECT_EQ(upb_Tokenizer_Type(t), kUpb_TokenType_Float);
EXPECT_TRUE(StringEquals(upb_Tokenizer_TextData(t), "1f"));
EXPECT_TRUE(upb_Tokenizer_Next(t, NULL));
EXPECT_EQ(upb_Tokenizer_Type(t), kUpb_TokenType_Float);
EXPECT_TRUE(StringEquals(upb_Tokenizer_TextData(t), "2.5f"));
EXPECT_TRUE(upb_Tokenizer_Next(t, NULL));
EXPECT_EQ(upb_Tokenizer_Type(t), kUpb_TokenType_Float);
EXPECT_TRUE(StringEquals(upb_Tokenizer_TextData(t), "6e3f"));
EXPECT_TRUE(upb_Tokenizer_Next(t, NULL));
EXPECT_EQ(upb_Tokenizer_Type(t), kUpb_TokenType_Float);
EXPECT_TRUE(StringEquals(upb_Tokenizer_TextData(t), "7F"));
upb_Status status;
upb_Status_Clear(&status);
// There should be no more input and no errors..
EXPECT_FALSE(upb_Tokenizer_Next(t, &status));
EXPECT_TRUE(upb_Status_IsOk(&status));
}
SimpleTokenCase kWhitespaceTokenCases[] = {
{" ", kUpb_TokenType_Whitespace},
{" ", kUpb_TokenType_Whitespace},
{"\t", kUpb_TokenType_Whitespace},
{"\v", kUpb_TokenType_Whitespace},
{"\t ", kUpb_TokenType_Whitespace},
{"\v\t", kUpb_TokenType_Whitespace},
{" \t\r", kUpb_TokenType_Whitespace},
// Newlines:
{"\n", kUpb_TokenType_Newline},
};
TEST_2D(TokenizerTest, Whitespace, kWhitespaceTokenCases, kBlockSizes) {
upb::Arena arena;
{
auto input = TestInputStream(kWhitespaceTokenCases_case.input.data(),
kWhitespaceTokenCases_case.input.size(),
kBlockSizes_case, arena.ptr());
auto t = upb_Tokenizer_New(NULL, 0, input, 0, arena.ptr());
EXPECT_FALSE(upb_Tokenizer_Next(t, NULL));
}
{
auto input = TestInputStream(kWhitespaceTokenCases_case.input.data(),
kWhitespaceTokenCases_case.input.size(),
kBlockSizes_case, arena.ptr());
const int options = kUpb_TokenizerOption_ReportNewlines;
auto t = upb_Tokenizer_New(NULL, 0, input, options, arena.ptr());
EXPECT_TRUE(upb_Tokenizer_Next(t, NULL));
EXPECT_EQ(upb_Tokenizer_Type(t), kWhitespaceTokenCases_case.type);
EXPECT_TRUE(StringEquals(upb_Tokenizer_TextData(t),
kWhitespaceTokenCases_case.input.data()));
EXPECT_FALSE(upb_Tokenizer_Next(t, NULL));
}
}
#endif
// -------------------------------------------------------------------
struct TokenFields {
upb_TokenType type;
std::string text;
size_t line;
size_t column;
size_t end_column;
};
// In each case, the input is parsed to produce a list of tokens. The
// last token in "output" must have type TYPE_END.
struct MultiTokenCase {
std::string input;
std::vector<TokenFields> output;
};
inline std::ostream& operator<<(std::ostream& out,
const MultiTokenCase& test_case) {
return out << absl::CEscape(test_case.input);
}
MultiTokenCase kMultiTokenCases[] = {
// Test empty input.
{"",
{
{kUpb_TokenType_End, "", 0, 0, 0},
}},
// Test all token types at the same time.
{"foo 1 1.2 + 'bar'",
{
{kUpb_TokenType_Identifier, "foo", 0, 0, 3},
{kUpb_TokenType_Integer, "1", 0, 4, 5},
{kUpb_TokenType_Float, "1.2", 0, 6, 9},
{kUpb_TokenType_Symbol, "+", 0, 10, 11},
{kUpb_TokenType_String, "'bar'", 0, 12, 17},
{kUpb_TokenType_End, "", 0, 17, 17},
}},
// Test that consecutive symbols are parsed as separate tokens.
{"!@+%",
{
{kUpb_TokenType_Symbol, "!", 0, 0, 1},
{kUpb_TokenType_Symbol, "@", 0, 1, 2},
{kUpb_TokenType_Symbol, "+", 0, 2, 3},
{kUpb_TokenType_Symbol, "%", 0, 3, 4},
{kUpb_TokenType_End, "", 0, 4, 4},
}},
// Test that newlines affect line numbers correctly.
{"foo bar\nrab oof",
{
{kUpb_TokenType_Identifier, "foo", 0, 0, 3},
{kUpb_TokenType_Identifier, "bar", 0, 4, 7},
{kUpb_TokenType_Identifier, "rab", 1, 0, 3},
{kUpb_TokenType_Identifier, "oof", 1, 4, 7},
{kUpb_TokenType_End, "", 1, 7, 7},
}},
// Test that tabs affect column numbers correctly.
{"foo\tbar \tbaz",
{
{kUpb_TokenType_Identifier, "foo", 0, 0, 3},
{kUpb_TokenType_Identifier, "bar", 0, 8, 11},
{kUpb_TokenType_Identifier, "baz", 0, 16, 19},
{kUpb_TokenType_End, "", 0, 19, 19},
}},
// Test that tabs in string literals affect column numbers correctly.
{"\"foo\tbar\" baz",
{
{kUpb_TokenType_String, "\"foo\tbar\"", 0, 0, 12},
{kUpb_TokenType_Identifier, "baz", 0, 13, 16},
{kUpb_TokenType_End, "", 0, 16, 16},
}},
// Test that line comments are ignored.
{"foo // This is a comment\n"
"bar // This is another comment",
{
{kUpb_TokenType_Identifier, "foo", 0, 0, 3},
{kUpb_TokenType_Identifier, "bar", 1, 0, 3},
{kUpb_TokenType_End, "", 1, 30, 30},
}},
// Test that block comments are ignored.
{"foo /* This is a block comment */ bar",
{
{kUpb_TokenType_Identifier, "foo", 0, 0, 3},
{kUpb_TokenType_Identifier, "bar", 0, 34, 37},
{kUpb_TokenType_End, "", 0, 37, 37},
}},
// Test that sh-style comments are not ignored by default.
{"foo # bar\n"
"baz",
{
{kUpb_TokenType_Identifier, "foo", 0, 0, 3},
{kUpb_TokenType_Symbol, "#", 0, 4, 5},
{kUpb_TokenType_Identifier, "bar", 0, 6, 9},
{kUpb_TokenType_Identifier, "baz", 1, 0, 3},
{kUpb_TokenType_End, "", 1, 3, 3},
}},
// Test all whitespace chars
{"foo\n\t\r\v\fbar",
{
{kUpb_TokenType_Identifier, "foo", 0, 0, 3},
{kUpb_TokenType_Identifier, "bar", 1, 11, 14},
{kUpb_TokenType_End, "", 1, 14, 14},
}},
};
TEST_2D(TokenizerTest, MultipleTokens, kMultiTokenCases, kBlockSizes) {
// Set up the tokenizer.
upb::Arena arena;
auto input = TestInputStream(kMultiTokenCases_case.input.data(),
kMultiTokenCases_case.input.size(),
kBlockSizes_case, arena.ptr());
auto t = upb_Tokenizer_New(NULL, 0, input, 0, arena.ptr());
// Before Next() is called, the initial token should always be TYPE_START.
EXPECT_EQ(upb_Tokenizer_Type(t), kUpb_TokenType_Start);
EXPECT_EQ(upb_Tokenizer_Line(t), 0);
EXPECT_EQ(upb_Tokenizer_Column(t), 0);
EXPECT_EQ(upb_Tokenizer_EndColumn(t), 0);
EXPECT_TRUE(StringEquals(upb_Tokenizer_TextData(t), ""));
// Loop through all expected tokens.
TokenFields token_fields;
upb_Status status;
upb_Status_Clear(&status);
int i = 0;
do {
token_fields = kMultiTokenCases_case.output[i++];
SCOPED_TRACE(testing::Message()
<< "Token #" << i << ": " << absl::CEscape(token_fields.text));
// Next() should only return false when it hits the end token.
if (token_fields.type == kUpb_TokenType_End) {
EXPECT_FALSE(upb_Tokenizer_Next(t, &status));
EXPECT_TRUE(upb_Status_IsOk(&status));
} else {
EXPECT_TRUE(upb_Tokenizer_Next(t, NULL));
}
// Check that the token matches the expected one.
EXPECT_EQ(upb_Tokenizer_Type(t), token_fields.type);
EXPECT_EQ(upb_Tokenizer_Line(t), token_fields.line);
EXPECT_EQ(upb_Tokenizer_Column(t), token_fields.column);
EXPECT_EQ(upb_Tokenizer_EndColumn(t), token_fields.end_column);
EXPECT_EQ(upb_Tokenizer_TextSize(t), token_fields.text.size());
EXPECT_TRUE(
StringEquals(upb_Tokenizer_TextData(t), token_fields.text.data()));
} while (token_fields.type != kUpb_TokenType_End);
}
MultiTokenCase kMultiWhitespaceTokenCases[] = {
// Test all token types at the same time.
{"foo 1 \t1.2 \n +\v'bar'",
{
{kUpb_TokenType_Identifier, "foo", 0, 0, 3},
{kUpb_TokenType_Whitespace, " ", 0, 3, 4},
{kUpb_TokenType_Integer, "1", 0, 4, 5},
{kUpb_TokenType_Whitespace, " \t", 0, 5, 8},
{kUpb_TokenType_Float, "1.2", 0, 8, 11},
{kUpb_TokenType_Whitespace, " ", 0, 11, 13},
{kUpb_TokenType_Newline, "\n", 0, 13, 0},
{kUpb_TokenType_Whitespace, " ", 1, 0, 3},
{kUpb_TokenType_Symbol, "+", 1, 3, 4},
{kUpb_TokenType_Whitespace, "\v", 1, 4, 5},
{kUpb_TokenType_String, "'bar'", 1, 5, 10},
{kUpb_TokenType_End, "", 1, 10, 10},
}},
};
TEST_2D(TokenizerTest, MultipleWhitespaceTokens, kMultiWhitespaceTokenCases,
kBlockSizes) {
// Set up the tokenizer.
upb::Arena arena;
auto input = TestInputStream(kMultiWhitespaceTokenCases_case.input.data(),
kMultiWhitespaceTokenCases_case.input.size(),
kBlockSizes_case, arena.ptr());
const int options = kUpb_TokenizerOption_ReportNewlines;
auto t = upb_Tokenizer_New(NULL, 0, input, options, arena.ptr());
// Before Next() is called, the initial token should always be TYPE_START.
EXPECT_EQ(upb_Tokenizer_Type(t), kUpb_TokenType_Start);
EXPECT_EQ(upb_Tokenizer_Line(t), 0);
EXPECT_EQ(upb_Tokenizer_Column(t), 0);
EXPECT_EQ(upb_Tokenizer_EndColumn(t), 0);
EXPECT_TRUE(StringEquals(upb_Tokenizer_TextData(t), ""));
// Loop through all expected tokens.
TokenFields token_fields;
upb_Status status;
upb_Status_Clear(&status);
int i = 0;
do {
token_fields = kMultiWhitespaceTokenCases_case.output[i++];
SCOPED_TRACE(testing::Message()
<< "Token #" << i << ": " << token_fields.text);
// Next() should only return false when it hits the end token.
if (token_fields.type == kUpb_TokenType_End) {
EXPECT_FALSE(upb_Tokenizer_Next(t, &status));
EXPECT_TRUE(upb_Status_IsOk(&status));
} else {
EXPECT_TRUE(upb_Tokenizer_Next(t, NULL));
}
// Check that the token matches the expected one.
EXPECT_EQ(upb_Tokenizer_Type(t), token_fields.type);
EXPECT_EQ(upb_Tokenizer_Line(t), token_fields.line);
EXPECT_EQ(upb_Tokenizer_Column(t), token_fields.column);
EXPECT_EQ(upb_Tokenizer_EndColumn(t), token_fields.end_column);
EXPECT_TRUE(
StringEquals(upb_Tokenizer_TextData(t), token_fields.text.data()));
} while (token_fields.type != kUpb_TokenType_End);
}
// This test causes gcc 3.3.5 (and earlier?) to give the cryptic error:
// "sorry, unimplemented: `method_call_expr' not supported by dump_expr"
#if !defined(__GNUC__) || __GNUC__ > 3 || (__GNUC__ == 3 && __GNUC_MINOR__ > 3)
TEST_1D(TokenizerTest, ShCommentStyle, kBlockSizes) {
// Test the "comment_style" option.
const char* text =
"foo # bar\n"
"baz // qux\n"
"corge /* grault */\n"
"garply";
const char* const kTokens[] = {"foo", // "# bar" is ignored
"baz", "/", "/", "qux", "corge", "/",
"*", "grault", "*", "/", "garply"};
// Set up the tokenizer.
upb::Arena arena;
auto input =
TestInputStream(text, strlen(text), kBlockSizes_case, arena.ptr());
const int options = kUpb_TokenizerOption_CommentStyleShell;
auto t = upb_Tokenizer_New(NULL, 0, input, options, arena.ptr());
// Advance through tokens and check that they are parsed as expected.
for (size_t i = 0; i < arraysize(kTokens); i++) {
EXPECT_TRUE(upb_Tokenizer_Next(t, NULL));
EXPECT_TRUE(StringEquals(upb_Tokenizer_TextData(t), kTokens[i]));
}
// There should be no more input and no errors.
upb_Status status;
upb_Status_Clear(&status);
EXPECT_FALSE(upb_Tokenizer_Next(t, &status));
EXPECT_TRUE(upb_Status_IsOk(&status));
}
#endif
// -------------------------------------------------------------------
#if 0 // TODO(salo): Extended comments are currently unimplemented.
// In each case, the input is expected to have two tokens named "prev" and
// "next" with comments in between.
struct DocCommentCase {
std::string input;
const char* prev_trailing_comments;
const char* detached_comments[10];
const char* next_leading_comments;
};
inline std::ostream& operator<<(std::ostream& out,
const DocCommentCase& test_case) {
return out << absl::CEscape(test_case.input);
}
DocCommentCase kDocCommentCases[] = {
{"prev next",
"",
{},
""},
{"prev /* ignored */ next",
"",
{},
""},
{"prev // trailing comment\n"
"next",
" trailing comment\n",
{},
""},
{"prev\n"
"// leading comment\n"
"// line 2\n"
"next",
"",
{},
" leading comment\n"
" line 2\n"},
{"prev\n"
"// trailing comment\n"
"// line 2\n"
"\n"
"next",
" trailing comment\n"
" line 2\n",
{},
""},
{"prev // trailing comment\n"
"// leading comment\n"
"// line 2\n"
"next",
" trailing comment\n",
{},
" leading comment\n"
" line 2\n"},
{"prev /* trailing block comment */\n"
"/* leading block comment\n"
" * line 2\n"
" * line 3 */"
"next",
" trailing block comment ",
{},
" leading block comment\n"
" line 2\n"
" line 3 "},
{"prev\n"
"/* trailing block comment\n"
" * line 2\n"
" * line 3\n"
" */\n"
"/* leading block comment\n"
" * line 2\n"
" * line 3 */"
"next",
" trailing block comment\n"
" line 2\n"
" line 3\n",
{},
" leading block comment\n"
" line 2\n"
" line 3 "},
{"prev\n"
"// trailing comment\n"
"\n"
"// detached comment\n"
"// line 2\n"
"\n"
"// second detached comment\n"
"/* third detached comment\n"
" * line 2 */\n"
"// leading comment\n"
"next",
" trailing comment\n",
{" detached comment\n"
" line 2\n",
" second detached comment\n",
" third detached comment\n"
" line 2 "},
" leading comment\n"},
{"prev /**/\n"
"\n"
"// detached comment\n"
"\n"
"// leading comment\n"
"next",
"",
{" detached comment\n"},
" leading comment\n"},
{"prev /**/\n"
"// leading comment\n"
"next",
"",
{},
" leading comment\n"},
};
TEST_2D(TokenizerTest, DocComments, kDocCommentCases, kBlockSizes) {
// Set up the tokenizer.
TestInputStream input(kDocCommentCases_case.input.data(),
kDocCommentCases_case.input.size(), kBlockSizes_case);
TestErrorCollector error_collector;
Tokenizer tokenizer(&input, &error_collector);
// Set up a second tokenizer where we'll pass all NULLs to NextWithComments().
TestInputStream input2(kDocCommentCases_case.input.data(),
kDocCommentCases_case.input.size(), kBlockSizes_case);
Tokenizer tokenizer2(&input2, &error_collector);
tokenizer.Next();
tokenizer2.Next();
EXPECT_EQ("prev", tokenizer.current().text);
EXPECT_EQ("prev", tokenizer2.current().text);
std::string prev_trailing_comments;
std::vector<std::string> detached_comments;
std::string next_leading_comments;
tokenizer.NextWithComments(&prev_trailing_comments, &detached_comments,
&next_leading_comments);
tokenizer2.NextWithComments(NULL, NULL, NULL);
EXPECT_EQ("next", tokenizer.current().text);
EXPECT_EQ("next", tokenizer2.current().text);
EXPECT_EQ(kDocCommentCases_case.prev_trailing_comments,
prev_trailing_comments);
for (int i = 0; i < detached_comments.size(); i++) {
EXPECT_LT(i, arraysize(kDocCommentCases));
EXPECT_TRUE(kDocCommentCases_case.detached_comments[i] != NULL);
EXPECT_EQ(kDocCommentCases_case.detached_comments[i], detached_comments[i]);
}
// Verify that we matched all the detached comments.
EXPECT_EQ(NULL,
kDocCommentCases_case.detached_comments[detached_comments.size()]);
EXPECT_EQ(kDocCommentCases_case.next_leading_comments, next_leading_comments);
}
#endif // 0
// -------------------------------------------------------------------
// Test parse helpers.
// TODO(b/225783758): Add a fuzz test for this.
TEST_F(TokenizerTest, ParseInteger) {
EXPECT_EQ(0, ParseInteger("0"));
EXPECT_EQ(123, ParseInteger("123"));
EXPECT_EQ(0xabcdef12u, ParseInteger("0xabcdef12"));
EXPECT_EQ(0xabcdef12u, ParseInteger("0xABCDEF12"));
EXPECT_EQ(UINT64_MAX, ParseInteger("0xFFFFFFFFFFFFFFFF"));
EXPECT_EQ(01234567, ParseInteger("01234567"));
EXPECT_EQ(0X123, ParseInteger("0X123"));
// Test invalid integers that may still be tokenized as integers.
EXPECT_EQ(0, ParseInteger("0x"));
uint64_t i;
// Test invalid integers that will never be tokenized as integers.
EXPECT_FALSE(upb_Parse_Integer("zxy", UINT64_MAX, &i));
EXPECT_FALSE(upb_Parse_Integer("1.2", UINT64_MAX, &i));
EXPECT_FALSE(upb_Parse_Integer("08", UINT64_MAX, &i));
EXPECT_FALSE(upb_Parse_Integer("0xg", UINT64_MAX, &i));
EXPECT_FALSE(upb_Parse_Integer("-1", UINT64_MAX, &i));
// Test overflows.
EXPECT_TRUE(upb_Parse_Integer("0", 0, &i));
EXPECT_FALSE(upb_Parse_Integer("1", 0, &i));
EXPECT_TRUE(upb_Parse_Integer("1", 1, &i));
EXPECT_TRUE(upb_Parse_Integer("12345", 12345, &i));
EXPECT_FALSE(upb_Parse_Integer("12346", 12345, &i));
EXPECT_TRUE(upb_Parse_Integer("0xFFFFFFFFFFFFFFFF", UINT64_MAX, &i));
EXPECT_FALSE(upb_Parse_Integer("0x10000000000000000", UINT64_MAX, &i));
// Test near the limits of signed parsing (values in INT64_MAX +/- 1600)
for (int64_t offset = -1600; offset <= 1600; ++offset) {
// We make sure to perform an unsigned addition so that we avoid signed
// overflow, which would be undefined behavior.
uint64_t i = 0x7FFFFFFFFFFFFFFFu + static_cast<uint64_t>(offset);
char decimal[32];
snprintf(decimal, 32, "%llu", static_cast<unsigned long long>(i));
if (offset > 0) {
uint64_t parsed = -1;
EXPECT_FALSE(upb_Parse_Integer(decimal, INT64_MAX, &parsed))
<< decimal << "=>" << parsed;
} else {
uint64_t parsed = -1;
EXPECT_TRUE(upb_Parse_Integer(decimal, INT64_MAX, &parsed))
<< decimal << "=>" << parsed;
EXPECT_EQ(parsed, i);
}
char octal[32];
snprintf(octal, 32, "0%llo", static_cast<unsigned long long>(i));
if (offset > 0) {
uint64_t parsed = -1;
EXPECT_FALSE(upb_Parse_Integer(octal, INT64_MAX, &parsed))
<< octal << "=>" << parsed;
} else {
uint64_t parsed = -1;
EXPECT_TRUE(upb_Parse_Integer(octal, INT64_MAX, &parsed))
<< octal << "=>" << parsed;
EXPECT_EQ(parsed, i);
}
char hex[32];
snprintf(hex, 32, "0x%llx", static_cast<unsigned long long>(i));
if (offset > 0) {
uint64_t parsed = -1;
EXPECT_FALSE(upb_Parse_Integer(hex, INT64_MAX, &parsed))
<< hex << "=>" << parsed;
} else {
uint64_t parsed = -1;
EXPECT_TRUE(upb_Parse_Integer(hex, INT64_MAX, &parsed)) << hex;
EXPECT_EQ(parsed, i);
}
// EXPECT_NE(offset, -237);
}
// Test near the limits of unsigned parsing (values in UINT64_MAX +/- 1600)
// By definition, values greater than UINT64_MAX cannot be held in a uint64_t
// variable, so printing them is a little tricky; fortunately all but the
// last four digits are known, so we can hard-code them in the printf string,
// and we only need to format the last 4.
for (int64_t offset = -1600; offset <= 1600; ++offset) {
{
uint64_t i = 18446744073709551615u + offset;
char decimal[32];
snprintf(decimal, 32, "1844674407370955%04llu",
static_cast<unsigned long long>(1615 + offset));
if (offset > 0) {
uint64_t parsed = -1;
EXPECT_FALSE(upb_Parse_Integer(decimal, UINT64_MAX, &parsed))
<< decimal << "=>" << parsed;
} else {
uint64_t parsed = -1;
EXPECT_TRUE(upb_Parse_Integer(decimal, UINT64_MAX, &parsed)) << decimal;
EXPECT_EQ(parsed, i);
}
}
{
uint64_t i = 01777777777777777777777u + offset;
if (offset > 0) {
char octal[32];
snprintf(octal, 32, "0200000000000000000%04llo",
static_cast<unsigned long long>(offset - 1));
uint64_t parsed = -1;
EXPECT_FALSE(upb_Parse_Integer(octal, UINT64_MAX, &parsed))
<< octal << "=>" << parsed;
} else {
char octal[32];
snprintf(octal, 32, "0%llo", static_cast<unsigned long long>(i));
uint64_t parsed = -1;
EXPECT_TRUE(upb_Parse_Integer(octal, UINT64_MAX, &parsed)) << octal;
EXPECT_EQ(parsed, i);
}
}
{
uint64_t ui = 0xffffffffffffffffu + offset;
char hex[32];
if (offset > 0) {
snprintf(hex, 32, "0x1000000000000%04llx",
static_cast<unsigned long long>(offset - 1));
uint64_t parsed = -1;
EXPECT_FALSE(upb_Parse_Integer(hex, UINT64_MAX, &parsed))
<< hex << "=>" << parsed;
} else {
snprintf(hex, 32, "0x%llx", static_cast<unsigned long long>(ui));
uint64_t parsed = -1;
EXPECT_TRUE(upb_Parse_Integer(hex, UINT64_MAX, &parsed)) << hex;
EXPECT_EQ(parsed, ui);
}
}
}
}
TEST_F(TokenizerTest, ParseFloat) {
EXPECT_DOUBLE_EQ(1, upb_Parse_Float("1."));
EXPECT_DOUBLE_EQ(1e3, upb_Parse_Float("1e3"));
EXPECT_DOUBLE_EQ(1e3, upb_Parse_Float("1E3"));
EXPECT_DOUBLE_EQ(1.5e3, upb_Parse_Float("1.5e3"));
EXPECT_DOUBLE_EQ(.1, upb_Parse_Float(".1"));
EXPECT_DOUBLE_EQ(.25, upb_Parse_Float(".25"));
EXPECT_DOUBLE_EQ(.1e3, upb_Parse_Float(".1e3"));
EXPECT_DOUBLE_EQ(.25e3, upb_Parse_Float(".25e3"));
EXPECT_DOUBLE_EQ(.1e+3, upb_Parse_Float(".1e+3"));
EXPECT_DOUBLE_EQ(.1e-3, upb_Parse_Float(".1e-3"));
EXPECT_DOUBLE_EQ(5, upb_Parse_Float("5"));
EXPECT_DOUBLE_EQ(6e-12, upb_Parse_Float("6e-12"));
EXPECT_DOUBLE_EQ(1.2, upb_Parse_Float("1.2"));
EXPECT_DOUBLE_EQ(1.e2, upb_Parse_Float("1.e2"));
// Test invalid integers that may still be tokenized as integers.
EXPECT_DOUBLE_EQ(1, upb_Parse_Float("1e"));
EXPECT_DOUBLE_EQ(1, upb_Parse_Float("1e-"));
EXPECT_DOUBLE_EQ(1, upb_Parse_Float("1.e"));
// Test 'f' suffix.
EXPECT_DOUBLE_EQ(1, upb_Parse_Float("1f"));
EXPECT_DOUBLE_EQ(1, upb_Parse_Float("1.0f"));
EXPECT_DOUBLE_EQ(1, upb_Parse_Float("1F"));
// These should parse successfully even though they are out of range.
// Overflows become infinity and underflows become zero.
EXPECT_EQ(0.0, upb_Parse_Float("1e-9999999999999999999999999999"));
EXPECT_EQ(HUGE_VAL, upb_Parse_Float("1e+9999999999999999999999999999"));
#ifdef GTEST_HAS_DEATH_TEST // death tests do not work on Windows yet
// Test invalid integers that will never be tokenized as integers.
EXPECT_DEBUG_DEATH(
upb_Parse_Float("zxy"),
"passed text that could not have been tokenized as a float");
EXPECT_DEBUG_DEATH(
upb_Parse_Float("1-e0"),
"passed text that could not have been tokenized as a float");
EXPECT_DEBUG_DEATH(
upb_Parse_Float("-1.0"),
"passed text that could not have been tokenized as a float");
#endif // GTEST_HAS_DEATH_TEST
}
TEST_F(TokenizerTest, ParseString) {
const std::string inputs[] = {
"'hello'",
"\"blah\\nblah2\"",
"'\\1x\\1\\123\\739\\52\\334n\\3'",
"'\\x20\\x4'",
// Test invalid strings that may still be tokenized as strings.
"\"\\a\\l\\v\\t", // \l is invalid
"'",
"'\\",
// Experiment with Unicode escapes.
// Here are one-, two- and three-byte Unicode characters.
"'\\u0024\\u00a2\\u20ac\\U00024b62XX'",
"'\\u0024\\u00a2\\u20ac\\ud852\\udf62XX'", // Same, encoded using UTF16.
// Here's some broken UTF16: a head surrogate with no tail surrogate.
// We just output this as if it were UTF8; it's not a defined code point,
// but it has a defined encoding.
"'\\ud852XX'",
// Malformed escape: Demons may fly out of the nose.
"'\\u0'",
// Beyond the range of valid UTF-32 code units.
"'\\U00110000\\U00200000\\UFFFFFFFF'",
};
const std::string outputs[] = {
"hello",
"blah\nblah2",
"\1x\1\123\739\52\334n\3",
"\x20\x4",
"\a?\v\t",
"",
"\\",
"$¢€𤭢XX",
"$¢€𤭢XX",
"\xed\xa1\x92XX",
"u0",
"\\U00110000\\U00200000\\Uffffffff",
};
upb::Arena arena;
for (size_t i = 0; i < sizeof(inputs) / sizeof(inputs[0]); i++) {
auto sv = upb_Parse_String(inputs[i].data(), arena.ptr());
EXPECT_TRUE(StringEquals(sv.data, outputs[i].data()));
}
// Test invalid strings that will never be tokenized as strings.
#ifdef GTEST_HAS_DEATH_TEST // death tests do not work on Windows yet
EXPECT_DEBUG_DEATH(
upb_Parse_String("", arena.ptr()),
"passed text that could not have been tokenized as a string");
#endif // GTEST_HAS_DEATH_TEST
}
TEST_F(TokenizerTest, ParseStringAppend) {
upb::Arena arena;
upb_String output;
upb_String_Init(&output, arena.ptr());
upb_String_Assign(&output, "stuff+", 6);
auto sv = upb_Parse_String("'hello'", arena.ptr());
EXPECT_TRUE(StringEquals(sv.data, "hello"));
upb_String_Append(&output, sv.data, sv.size);
EXPECT_TRUE(StringEquals(upb_String_Data(&output), "stuff+hello"));
}
// -------------------------------------------------------------------
// Each case parses some input text, ignoring the tokens produced, and
// checks that the error output matches what is expected.
struct ErrorCase {
std::string input;
const char* errors;
};
inline std::ostream& operator<<(std::ostream& out, const ErrorCase& test_case) {
return out << absl::CEscape(test_case.input);
}
ErrorCase kErrorCases[] = {
// String errors.
{"'\\l'", "0:2: Invalid escape sequence in string literal."},
{"'\\X'", "0:2: Invalid escape sequence in string literal."},
{"'\\x'", "0:3: Expected hex digits for escape sequence."},
{"'foo", "0:4: Unexpected end of string."},
{"'bar\nfoo", "0:4: String literals cannot cross line boundaries."},
{"'\\u01'", "0:5: Expected four hex digits for \\u escape sequence."},
{"'\\uXYZ'", "0:3: Expected four hex digits for \\u escape sequence."},
// Integer errors.
{"123foo", "0:3: Need space between number and identifier."},
// Hex/octal errors.
{"0x foo", "0:2: \"0x\" must be followed by hex digits."},
{"0541823", "0:4: Numbers starting with leading zero must be in octal."},
{"0x123z", "0:5: Need space between number and identifier."},
{"0x123.4", "0:5: Hex and octal numbers must be integers."},
{"0123.4", "0:4: Hex and octal numbers must be integers."},
// Float errors.
{"1e foo", "0:2: \"e\" must be followed by exponent."},
{"1e- foo", "0:3: \"e\" must be followed by exponent."},
{"1.2.3",
"0:3: Already saw decimal point or exponent; can't have another one."},
{"1e2.3",
"0:3: Already saw decimal point or exponent; can't have another one."},
{"a.1", "0:1: Need space between identifier and decimal point."},
// allow_f_after_float not enabled, so this should be an error.
{"1.0f", "0:3: Need space between number and identifier."},
// Block comment errors.
{"/*",
"0:2: End-of-file inside block comment.\n0:0: Comment started here."},
{"/*/*/ foo",
"0:3: \"/*\" inside block comment. Block comments cannot be nested."},
// Control characters. Multiple consecutive control characters should only
// produce one error.
{"\b foo", "0:0: Invalid control characters encountered in text."},
{"\b\b foo", "0:0: Invalid control characters encountered in text."},
// Check that control characters at end of input don't result in an
// infinite loop.
{"\b", "0:0: Invalid control characters encountered in text."},
// Check recovery from '\0'. We have to explicitly specify the length of
// these strings because otherwise the string constructor will just call
// strlen() which will see the first '\0' and think that is the end of the
// string.
{std::string("\0foo", 4),
"0:0: Invalid control characters encountered in text."},
{std::string("\0\0foo", 5),
"0:0: Invalid control characters encountered in text."},
// Check error from high order bits set
{"\300", "0:0: Interpreting non ascii codepoint 192."},
};
TEST_2D(TokenizerTest, Errors, kErrorCases, kBlockSizes) {
// Set up the tokenizer.
upb::Arena arena;
auto input = TestInputStream(kErrorCases_case.input.data(),
kErrorCases_case.input.size(), kBlockSizes_case,
arena.ptr());
auto t = upb_Tokenizer_New(NULL, 0, input, 0, arena.ptr());
upb_Status status;
upb_Status_Clear(&status);
while (upb_Tokenizer_Next(t, &status))
; // just keep looping
EXPECT_TRUE(
StringEquals(upb_Status_ErrorMessage(&status), kErrorCases_case.errors));
}
// -------------------------------------------------------------------
TEST_1D(TokenizerTest, BackUpOnDestruction, kBlockSizes) {
const std::string text = "foo bar";
upb::Arena arena;
auto input =
TestInputStream(text.data(), text.size(), kBlockSizes_case, arena.ptr());
// Create a tokenizer, read one token, then destroy it.
auto t = upb_Tokenizer_New(NULL, 0, input, 0, arena.ptr());
upb_Tokenizer_Next(t, NULL);
upb_Tokenizer_Fini(t);
// Only "foo" should have been read.
EXPECT_EQ(strlen("foo"), upb_ZeroCopyInputStream_ByteCount(input));
}
static const char* kParseBenchmark[] = {
"\"partner-google-mobile-modes-print\"",
"\"partner-google-mobile-modes-products\"",
"\"partner-google-mobile-modes-realtime\"",
"\"partner-google-mobile-modes-video\"",
"\"partner-google-modes-news\"",
"\"partner-google-modes-places\"",
"\"partner-google-news\"",
"\"partner-google-print\"",
"\"partner-google-products\"",
"\"partner-google-realtime\"",
"\"partner-google-video\"",
"\"true\"",
"\"BigImagesHover__js_list\"",
"\"XFEExternJsVersionParameters\"",
"\"Available versions of the big images hover javascript\"",
"\"Version: {\n\"",
"\" script_name: \"extern_js/dummy_file_compiled_post20070813.js\"\n\"",
"\" version_number: 0\n\"",
"\"}\"",
"\"BigImagesHover__js_selection\"",
"\"XFEExternJsVersionParameters\"",
"\"Versioning info for the big images hover javascript.\"",
"\"current_version: 0\"",
"\"BigImagesHover__js_suppressed\"",
"\"Indicates if the client-side javascript associated with big images.\"",
"\"true\"",
"\"BrowserAnyOf\"",
"\"IsChrome5OrAbove\"",
"\"IsFirefox3OrAbove\"",
"IsIE8OrAboveBinary",
"\"Abe \"Sausage King\" Froman\"",
"\"Frank \"Meatball\" Febbraro\"",
};
TEST(Benchmark, ParseStringAppendAccumulate) {
upb::Arena arena;
size_t outsize = 0;
int benchmark_len = arraysize(kParseBenchmark);
for (int i = 0; i < benchmark_len; i++) {
auto sv = upb_Parse_String(kParseBenchmark[i], arena.ptr());
outsize += sv.size;
}
EXPECT_NE(0, outsize);
}
TEST(Benchmark, ParseStringAppend) {
upb::Arena arena;
upb_String output;
upb_String_Init(&output, arena.ptr());
int benchmark_len = arraysize(kParseBenchmark);
for (int i = 0; i < benchmark_len; i++) {
auto sv = upb_Parse_String(kParseBenchmark[i], arena.ptr());
upb_String_Append(&output, sv.data, sv.size);
}
EXPECT_NE(0, upb_String_Size(&output));
}
// These tests validate the Tokenizer's handling of Unicode escapes.
// Encode a single code point as UTF8.
static std::string StandardUTF8(uint32_t code_point) {
char buffer[4];
int count = upb_Unicode_ToUTF8(code_point, &buffer[0]);
EXPECT_NE(count, 0) << "Failed to encode point " << std::hex << code_point;
return std::string(reinterpret_cast<const char*>(buffer), count);
}
static std::string DisplayHex(const std::string& data) {
std::string output;
for (size_t i = 0; i < data.size(); ++i) {
absl::StrAppendFormat(&output, "%02x ", data[i]);
}
return output;
}
static void ExpectFormat(const std::string& expectation,
const std::string& formatted) {
upb::Arena arena;
auto sv = upb_Parse_String(formatted.data(), arena.ptr());
EXPECT_EQ(strcmp(sv.data, expectation.data()), 0)
<< ": Incorrectly parsed " << formatted << ":\nGot "
<< DisplayHex(sv.data) << "\nExpected " << DisplayHex(expectation);
}
TEST(TokenizerHandlesUnicode, BMPCodes) {
for (uint32_t code_point = 0; code_point < 0x10000; ++code_point) {
// The UTF8 encoding of surrogates as single entities is not defined.
if (upb_Unicode_IsHigh(code_point)) continue;
if (upb_Unicode_IsLow(code_point)) continue;
const std::string expectation = StandardUTF8(code_point);
// Points in the BMP pages can be encoded using either \u with four hex
// digits, or \U with eight hex digits.
ExpectFormat(expectation, absl::StrFormat("'\\u%04x'", code_point));
ExpectFormat(expectation, absl::StrFormat("'\\u%04X'", code_point));
ExpectFormat(expectation, absl::StrFormat("'\\U%08x'", code_point));
ExpectFormat(expectation, absl::StrFormat("'\\U%08X'", code_point));
}
}
TEST(TokenizerHandlesUnicode, NonBMPCodes) {
for (uint32_t code_point = 0x10000; code_point < 0x110000; ++code_point) {
const std::string expectation = StandardUTF8(code_point);
// Points in the non-BMP pages can be encoded using either \U with eight hex
// digits, or using UTF-16 surrogate pairs.
ExpectFormat(expectation, absl::StrFormat("'\\U%08x'", code_point));
ExpectFormat(expectation, absl::StrFormat("'\\U%08X'", code_point));
ExpectFormat(expectation, absl::StrFormat("'\\u%04x\\u%04x'",
upb_Unicode_ToHigh(code_point),
upb_Unicode_ToLow(code_point)));
}
}
} // namespace
} // namespace io
} // namespace proto2