Convert SPIR-V reader to utils::StringStream.

This CL updates the SPIR-V reader to use utils::StringStream internally.

Bug: tint:1686
Change-Id: I619c2aa56b85e6c24b933ffa2a1a409d63846f5e
Reviewed-on: https://dawn-review.googlesource.com/c/dawn/+/122000
Reviewed-by: Ben Clayton <bclayton@google.com>
Kokoro: Kokoro <noreply+kokoro@google.com>
Commit-Queue: Dan Sinclair <dsinclair@chromium.org>

src/tint/reader/spirv/construct.h

@@ -19,6 +19,7 @@
 #include <sstream>
 #include <string>
 
+#include "src/tint/utils/string_stream.h"
 #include "src/tint/utils/vector.h"
 
 namespace tint::reader::spirv {
@@ -173,7 +174,7 @@ inline std::string ToString(Construct::Kind kind) {
 /// @returns a short summary string
 inline std::string ToStringBrief(const Construct* c) {
     if (c) {
-        std::stringstream ss;
+        utils::StringStream ss;
         ss << ToString(c->kind) << "@" << c->begin_id;
         return ss.str();
     }
@@ -184,7 +185,7 @@ inline std::string ToStringBrief(const Construct* c) {
 /// @param o the stream
 /// @param c the structured construct
 /// @returns the stream
-inline std::ostream& operator<<(std::ostream& o, const Construct& c) {
+inline utils::StringStream& operator<<(utils::StringStream& o, const Construct& c) {
     o << "Construct{ " << ToString(c.kind) << " [" << c.begin_pos << "," << c.end_pos << ")"
       << " begin_id:" << c.begin_id << " end_id:" << c.end_id << " depth:" << c.depth;
 
@@ -215,7 +216,8 @@ inline std::ostream& operator<<(std::ostream& o, const Construct& c) {
 /// @param o the stream
 /// @param c the structured construct
 /// @returns the stream
-inline std::ostream& operator<<(std::ostream& o, const std::unique_ptr<Construct>& c) {
+inline utils::StringStream& operator<<(utils::StringStream& o,
+                                       const std::unique_ptr<Construct>& c) {
     return o << *(c.get());
 }
 
@@ -223,7 +225,7 @@ inline std::ostream& operator<<(std::ostream& o, const std::unique_ptr<Construct
 /// @param c the construct
 /// @returns the string representation
 inline std::string ToString(const Construct& c) {
-    std::stringstream ss;
+    utils::StringStream ss;
     ss << c;
     return ss.str();
 }
@@ -246,7 +248,7 @@ inline std::string ToString(const std::unique_ptr<Construct>& c) {
 /// @param o the stream
 /// @param cl the construct list
 /// @returns the stream
-inline std::ostream& operator<<(std::ostream& o, const ConstructList& cl) {
+inline utils::StringStream& operator<<(utils::StringStream& o, const ConstructList& cl) {
     o << "ConstructList{\n";
     for (const auto& c : cl) {
         o << "  " << c << "\n";
@@ -259,7 +261,7 @@ inline std::ostream& operator<<(std::ostream& o, const ConstructList& cl) {
 /// @param cl the construct list
 /// @returns the string representation
 inline std::string ToString(const ConstructList& cl) {
-    std::stringstream ss;
+    utils::StringStream ss;
     ss << cl;
     return ss.str();
 }

src/tint/reader/spirv/enum_converter_test.cc

@@ -18,6 +18,7 @@
 
 #include "gmock/gmock.h"
 #include "src/tint/type/texture_dimension.h"
+#include "src/tint/utils/string_stream.h"
 
 namespace tint::reader::spirv {
 namespace {
@@ -45,7 +46,7 @@ class SpvPipelineStageTest : public testing::TestWithParam<PipelineStageCase> {
 
   protected:
     bool success_ = true;
-    std::stringstream errors_;
+    utils::StringStream errors_;
     FailStream fail_stream_;
     EnumConverter converter_;
 };
@@ -103,7 +104,7 @@ class SpvStorageClassTest : public testing::TestWithParam<StorageClassCase> {
 
   protected:
     bool success_ = true;
-    std::stringstream errors_;
+    utils::StringStream errors_;
     FailStream fail_stream_;
     EnumConverter converter_;
 };
@@ -164,7 +165,7 @@ class SpvBuiltinTest : public testing::TestWithParam<BuiltinCase> {
 
   protected:
     bool success_ = true;
-    std::stringstream errors_;
+    utils::StringStream errors_;
     FailStream fail_stream_;
     EnumConverter converter_;
 };
@@ -239,7 +240,7 @@ class SpvDimTest : public testing::TestWithParam<DimCase> {
 
   protected:
     bool success_ = true;
-    std::stringstream errors_;
+    utils::StringStream errors_;
     FailStream fail_stream_;
     EnumConverter converter_;
 };
@@ -311,7 +312,7 @@ class SpvImageFormatTest : public testing::TestWithParam<TexelFormatCase> {
 
   protected:
     bool success_ = true;
-    std::stringstream errors_;
+    utils::StringStream errors_;
     FailStream fail_stream_;
     EnumConverter converter_;
 };

src/tint/reader/spirv/fail_stream.h

@@ -15,7 +15,7 @@
 #ifndef SRC_TINT_READER_SPIRV_FAIL_STREAM_H_
 #define SRC_TINT_READER_SPIRV_FAIL_STREAM_H_
 
-#include <ostream>
+#include "src/tint/utils/string_stream.h"
 
 namespace tint::reader::spirv {
 
@@ -29,7 +29,7 @@ class FailStream {
     /// to be a valid pointer to bool.
     /// @param out output stream where a message should be written to explain
     /// the failure
-    FailStream(bool* status_ptr, std::ostream* out) : status_ptr_(status_ptr), out_(out) {}
+    FailStream(bool* status_ptr, utils::StringStream* out) : status_ptr_(status_ptr), out_(out) {}
     /// Copy constructor
     /// @param other the fail stream to clone
     FailStream(const FailStream& other) = default;
@@ -61,7 +61,7 @@ class FailStream {
 
   private:
     bool* status_ptr_;
-    std::ostream* out_;
+    utils::StringStream* out_;
 };
 
 }  // namespace tint::reader::spirv

src/tint/reader/spirv/fail_stream_test.cc

@@ -15,6 +15,7 @@
 #include "src/tint/reader/spirv/fail_stream.h"
 
 #include "gmock/gmock.h"
+#include "src/tint/utils/string_stream.h"
 
 namespace tint::reader::spirv {
 namespace {
@@ -56,7 +57,7 @@ TEST_F(FailStreamTest, FailMethodReturnsSelf) {
 
 TEST_F(FailStreamTest, ShiftOperatorAccumulatesValues) {
     bool flag = true;
-    std::stringstream ss;
+    utils::StringStream ss;
     FailStream fs(&flag, &ss);
 
     ss << "prefix ";

src/tint/reader/spirv/function_arithmetic_test.cc

@@ -16,6 +16,7 @@
 #include "src/tint/reader/spirv/function.h"
 #include "src/tint/reader/spirv/parser_impl_test_helper.h"
 #include "src/tint/reader/spirv/spirv_tools_helpers_test.h"
+#include "src/tint/utils/string_stream.h"
 
 namespace tint::reader::spirv {
 namespace {
@@ -307,7 +308,7 @@ TEST_P(SpvBinaryArithTest, EmitExpression) {
     ASSERT_TRUE(p->BuildAndParseInternalModuleExceptFunctions()) << p->error() << "\n" << assembly;
     auto fe = p->function_emitter(100);
     EXPECT_TRUE(fe.EmitBody()) << p->error();
-    std::ostringstream ss;
+    utils::StringStream ss;
     ss << "let x_1 : " << GetParam().ast_type << " = (" << GetParam().ast_lhs << " "
        << GetParam().ast_op << " " << GetParam().ast_rhs << ");";
     auto ast_body = fe.ast_body();
@@ -346,7 +347,7 @@ TEST_P(SpvBinaryArithGeneralTest, EmitExpression) {
     ASSERT_TRUE(p->BuildAndParseInternalModuleExceptFunctions()) << p->error() << "\n" << assembly;
     auto fe = p->function_emitter(100);
     EXPECT_TRUE(fe.EmitBody()) << p->error();
-    std::ostringstream ss;
+    utils::StringStream ss;
     ss << "let x_1 : " << GetParam().wgsl_type << " = " << GetParam().expected << ";";
     auto ast_body = fe.ast_body();
     auto got = test::ToString(p->program(), ast_body);

src/tint/reader/spirv/function_bit_test.cc

@@ -15,6 +15,7 @@
 #include "src/tint/reader/spirv/function.h"
 #include "src/tint/reader/spirv/parser_impl_test_helper.h"
 #include "src/tint/reader/spirv/spirv_tools_helpers_test.h"
+#include "src/tint/utils/string_stream.h"
 
 namespace tint::reader::spirv {
 namespace {
@@ -125,7 +126,7 @@ TEST_P(SpvBinaryBitTest, EmitExpression) {
     ASSERT_TRUE(p->BuildAndParseInternalModuleExceptFunctions()) << p->error() << "\n" << assembly;
     auto fe = p->function_emitter(100);
     EXPECT_TRUE(fe.EmitBody()) << p->error();
-    std::ostringstream ss;
+    utils::StringStream ss;
     ss << "let x_1 : " << GetParam().ast_type << " = (" << GetParam().ast_lhs << " "
        << GetParam().ast_op << " " << GetParam().ast_rhs << ");";
     auto ast_body = fe.ast_body();
@@ -163,7 +164,7 @@ TEST_P(SpvBinaryBitGeneralTest, EmitExpression) {
     ASSERT_TRUE(p->BuildAndParseInternalModuleExceptFunctions()) << p->error() << "\n" << assembly;
     auto fe = p->function_emitter(100);
     EXPECT_TRUE(fe.EmitBody()) << p->error() << assembly;
-    std::ostringstream ss;
+    utils::StringStream ss;
     ss << "let x_1 : " << GetParam().wgsl_type << " = " << GetParam().expected << ";\nreturn;\n";
     auto ast_body = fe.ast_body();
     auto got = test::ToString(p->program(), ast_body);

src/tint/reader/spirv/function_cfg_test.cc

@@ -16,6 +16,7 @@
 #include "src/tint/reader/spirv/function.h"
 #include "src/tint/reader/spirv/parser_impl_test_helper.h"
 #include "src/tint/reader/spirv/spirv_tools_helpers_test.h"
+#include "src/tint/utils/string_stream.h"
 
 namespace tint::reader::spirv {
 namespace {
@@ -27,7 +28,7 @@ using ::testing::HasSubstr;
 using SpvParserCFGTest = SpvParserTest;
 
 std::string Dump(const std::vector<uint32_t>& v) {
-    std::ostringstream o;
+    utils::StringStream o;
     o << "{";
     for (auto a : v) {
         o << a << " ";

src/tint/reader/spirv/function_decl_test.cc

@@ -16,6 +16,7 @@
 #include "src/tint/reader/spirv/function.h"
 #include "src/tint/reader/spirv/parser_impl_test_helper.h"
 #include "src/tint/reader/spirv/spirv_tools_helpers_test.h"
+#include "src/tint/utils/string_stream.h"
 
 namespace tint::reader::spirv {
 namespace {
@@ -34,7 +35,7 @@ std::string Preamble() {
 /// @returns a SPIR-V assembly segment which assigns debug names
 /// to particular IDs.
 std::string Names(std::vector<std::string> ids) {
-    std::ostringstream outs;
+    utils::StringStream outs;
     for (auto& id : ids) {
         outs << "    OpName %" << id << " \"" << id << "\"\n";
     }

src/tint/reader/spirv/function_logical_test.cc

@@ -16,6 +16,7 @@
 #include "src/tint/reader/spirv/function.h"
 #include "src/tint/reader/spirv/parser_impl_test_helper.h"
 #include "src/tint/reader/spirv/spirv_tools_helpers_test.h"
+#include "src/tint/utils/string_stream.h"
 
 namespace tint::reader::spirv {
 namespace {
@@ -188,7 +189,7 @@ TEST_P(SpvBinaryLogicalTest, EmitExpression) {
     ASSERT_TRUE(p->BuildAndParseInternalModuleExceptFunctions()) << p->error() << "\n" << assembly;
     auto fe = p->function_emitter(100);
     EXPECT_TRUE(fe.EmitBody()) << p->error();
-    std::ostringstream ss;
+    utils::StringStream ss;
     ss << "let x_1 : " << GetParam().ast_type << " = (" << GetParam().ast_lhs << " "
        << GetParam().ast_op << " " << GetParam().ast_rhs << ");";
     auto ast_body = fe.ast_body();

src/tint/reader/spirv/function_var_test.cc

@@ -16,6 +16,7 @@
 #include "src/tint/reader/spirv/function.h"
 #include "src/tint/reader/spirv/parser_impl_test_helper.h"
 #include "src/tint/reader/spirv/spirv_tools_helpers_test.h"
+#include "src/tint/utils/string_stream.h"
 
 namespace tint::reader::spirv {
 namespace {
@@ -26,7 +27,7 @@ using ::testing::HasSubstr;
 /// @returns a SPIR-V assembly segment which assigns debug names
 /// to particular IDs.
 std::string Names(std::vector<std::string> ids) {
-    std::ostringstream outs;
+    utils::StringStream outs;
     for (auto& id : ids) {
         outs << "    OpName %" << id << " \"" << id << "\"\n";
     }

src/tint/reader/spirv/namer.cc

@@ -19,6 +19,7 @@
 #include <unordered_set>
 
 #include "src/tint/debug.h"
+#include "src/tint/utils/string_stream.h"
 
 namespace tint::reader::spirv {
 
@@ -219,7 +220,7 @@ std::string Namer::FindUnusedDerivedName(const std::string& base_name) {
     std::string derived_name;
     uint32_t& i = next_unusued_derived_name_id_[base_name];
     while (i != 0xffffffff) {
-        std::stringstream new_name_stream;
+        utils::StringStream new_name_stream;
         new_name_stream << base_name;
         if (i > 0) {
             new_name_stream << "_" << i;
@@ -305,7 +306,7 @@ void Namer::ResolveMemberNamesForStruct(uint32_t struct_id, uint32_t num_members
         uint32_t i = 1;
         std::string new_name;
         do {
-            std::stringstream new_name_stream;
+            utils::StringStream new_name_stream;
             new_name_stream << suggestion << "_" << i;
             new_name = new_name_stream.str();
             ++i;
@@ -331,7 +332,7 @@ void Namer::ResolveMemberNamesForStruct(uint32_t struct_id, uint32_t num_members
     uint32_t index = 0;
     for (auto& name : name_vector) {
         if (name.empty()) {
-            std::stringstream suggestion;
+            utils::StringStream suggestion;
             suggestion << "field" << index;
             // Again, modify the name-vector in-place.
             name = disambiguate_name(suggestion.str());

src/tint/reader/spirv/namer_test.cc

@@ -15,6 +15,7 @@
 #include "src/tint/reader/spirv/namer.h"
 
 #include "gmock/gmock.h"
+#include "src/tint/utils/string_stream.h"
 
 namespace tint::reader::spirv {
 namespace {
@@ -29,7 +30,7 @@ class SpvNamerTest : public testing::Test {
     std::string error() { return errors_.str(); }
 
   protected:
-    std::stringstream errors_;
+    utils::StringStream errors_;
     bool success_ = true;
     FailStream fail_stream_;
 };
@@ -351,7 +352,7 @@ using SpvNamerReservedWordTest = ::testing::TestWithParam<std::string>;
 
 TEST_P(SpvNamerReservedWordTest, ReservedWordsAreUsed) {
     bool success;
-    std::stringstream errors;
+    utils::StringStream errors;
     FailStream fail_stream(&success, &errors);
     Namer namer(fail_stream);
     const std::string reserved = GetParam();

src/tint/reader/spirv/parser_impl.h

@@ -24,6 +24,7 @@
 
 #include "src/tint/utils/compiler_macros.h"
 #include "src/tint/utils/hashmap.h"
+#include "src/tint/utils/string_stream.h"
 
 TINT_BEGIN_DISABLE_WARNING(NEWLINE_EOF);
 TINT_BEGIN_DISABLE_WARNING(OLD_STYLE_CAST);
@@ -819,7 +820,7 @@ class ParserImpl : Reader {
     // Is the parse successful?
     bool success_ = true;
     // Collector for diagnostic messages.
-    std::stringstream errors_;
+    utils::StringStream errors_;
     FailStream fail_stream_;
     spvtools::MessageConsumer message_consumer_;
 

src/tint/reader/spirv/parser_impl_function_decl_test.cc

@@ -15,6 +15,7 @@
 #include "gmock/gmock.h"
 #include "src/tint/reader/spirv/parser_impl_test_helper.h"
 #include "src/tint/reader/spirv/spirv_tools_helpers_test.h"
+#include "src/tint/utils/string_stream.h"
 
 namespace tint::reader::spirv {
 namespace {
@@ -47,7 +48,7 @@ std::string MainBody() {
 /// @returns a SPIR-V assembly segment which assigns debug names
 /// to particular IDs.
 std::string Names(std::vector<std::string> ids) {
-    std::ostringstream outs;
+    utils::StringStream outs;
     for (auto& id : ids) {
         outs << "    OpName %" << id << " \"" << id << "\"\n";
     }

src/tint/reader/spirv/parser_impl_handle_test.cc

@@ -18,6 +18,7 @@
 #include "src/tint/reader/spirv/function.h"
 #include "src/tint/reader/spirv/parser_impl_test_helper.h"
 #include "src/tint/reader/spirv/spirv_tools_helpers_test.h"
+#include "src/tint/utils/string_stream.h"
 
 namespace tint::reader::spirv {
 namespace {
@@ -235,7 +236,7 @@ std::string CommonTypes() {
 }
 
 std::string Bindings(std::vector<uint32_t> ids) {
-    std::ostringstream os;
+    utils::StringStream os;
     int binding = 0;
     for (auto id : ids) {
         os << "  OpDecorate %" << id << " DescriptorSet 0\n"

src/tint/reader/spirv/parser_type.cc

@@ -23,6 +23,7 @@
 #include "src/tint/utils/hash.h"
 #include "src/tint/utils/map.h"
 #include "src/tint/utils/string.h"
+#include "src/tint/utils/string_stream.h"
 #include "src/tint/utils/unique_allocator.h"
 
 TINT_INSTANTIATE_TYPEINFO(tint::reader::spirv::Type);
@@ -557,31 +558,31 @@ std::string I32::String() const {
 }
 
 std::string Pointer::String() const {
-    std::stringstream ss;
+    utils::StringStream ss;
     ss << "ptr<" << utils::ToString(address_space) << ", " << type->String() + ">";
     return ss.str();
 }
 
 std::string Reference::String() const {
-    std::stringstream ss;
+    utils::StringStream ss;
     ss << "ref<" + utils::ToString(address_space) << ", " << type->String() << ">";
     return ss.str();
 }
 
 std::string Vector::String() const {
-    std::stringstream ss;
+    utils::StringStream ss;
     ss << "vec" << size << "<" << type->String() << ">";
     return ss.str();
 }
 
 std::string Matrix::String() const {
-    std::stringstream ss;
+    utils::StringStream ss;
     ss << "mat" << columns << "x" << rows << "<" << type->String() << ">";
     return ss.str();
 }
 
 std::string Array::String() const {
-    std::stringstream ss;
+    utils::StringStream ss;
     ss << "array<" << type->String() << ", " << size << ", " << stride << ">";
     return ss.str();
 }
@@ -597,31 +598,31 @@ std::string Sampler::String() const {
 }
 
 std::string DepthTexture::String() const {
-    std::stringstream ss;
+    utils::StringStream ss;
     ss << "depth_" << dims;
     return ss.str();
 }
 
 std::string DepthMultisampledTexture::String() const {
-    std::stringstream ss;
+    utils::StringStream ss;
     ss << "depth_multisampled_" << dims;
     return ss.str();
 }
 
 std::string MultisampledTexture::String() const {
-    std::stringstream ss;
+    utils::StringStream ss;
     ss << "texture_multisampled_" << dims << "<" << type << ">";
     return ss.str();
 }
 
 std::string SampledTexture::String() const {
-    std::stringstream ss;
+    utils::StringStream ss;
     ss << "texture_" << dims << "<" << type << ">";
     return ss.str();
 }
 
 std::string StorageTexture::String() const {
-    std::stringstream ss;
+    utils::StringStream ss;
     ss << "texture_storage_" << dims << "<" << format << ", " << access << ">";
     return ss.str();
 }

src/tint/reader/spirv/spirv_tools_helpers_test.cc

@@ -16,6 +16,7 @@
 
 #include "gtest/gtest.h"
 #include "spirv-tools/libspirv.hpp"
+#include "src/tint/utils/string_stream.h"
 
 namespace tint::reader::spirv::test {
 
@@ -24,7 +25,7 @@ std::vector<uint32_t> Assemble(const std::string& spirv_assembly) {
 
     // (The target environment doesn't affect assembly.
     spvtools::SpirvTools tools(SPV_ENV_UNIVERSAL_1_0);
-    std::stringstream errors;
+    utils::StringStream errors;
     std::vector<uint32_t> result;
     tools.SetMessageConsumer([&errors](spv_message_level_t, const char*,
                                        const spv_position_t& position, const char* message) {
@@ -40,7 +41,7 @@ std::vector<uint32_t> Assemble(const std::string& spirv_assembly) {
 
 std::string Disassemble(const std::vector<uint32_t>& spirv_module) {
     spvtools::SpirvTools tools(SPV_ENV_UNIVERSAL_1_0);
-    std::stringstream errors;
+    utils::StringStream errors;
     tools.SetMessageConsumer([&errors](spv_message_level_t, const char*,
                                        const spv_position_t& position, const char* message) {
         errors << "disassmbly error:" << position.line << ":" << position.column << ": " << message;

src/tint/reader/spirv/usage.cc

@@ -16,6 +16,8 @@
 
 #include <sstream>
 
+#include "src/tint/utils/string_stream.h"
+
 namespace tint::reader::spirv {
 
 Usage::Usage() {}
@@ -179,7 +181,7 @@ void Usage::AddDepthTexture() {
 }
 
 std::string Usage::to_str() const {
-    std::ostringstream ss;
+    utils::StringStream ss;
     ss << *this;
     return ss.str();
 }

src/tint/reader/spirv/usage_test.cc

@@ -17,6 +17,7 @@
 
 #include "gmock/gmock.h"
 #include "src/tint/reader/spirv/parser_impl_test_helper.h"
+#include "src/tint/utils/string_stream.h"
 
 namespace tint::reader::spirv {
 namespace {
@@ -38,7 +39,7 @@ TEST_F(SpvParserTest, Usage_Trivial_Properties) {
 }
 
 TEST_F(SpvParserTest, Usage_Trivial_Output) {
-    std::ostringstream ss;
+    utils::StringStream ss;
     Usage u;
     ss << u;
     EXPECT_THAT(ss.str(), Eq("Usage()"));
@@ -89,13 +90,13 @@ TEST_F(SpvParserTest, Usage_Add) {
     EXPECT_TRUE(a.IsStorageReadTexture());
     EXPECT_FALSE(a.IsStorageWriteTexture());
 
-    std::ostringstream ss;
+    utils::StringStream ss;
     ss << a;
     EXPECT_THAT(ss.str(), Eq("Usage(Sampler( comparison )Texture( read ))"));
 }
 
 TEST_F(SpvParserTest, Usage_AddSampler) {
-    std::ostringstream ss;
+    utils::StringStream ss;
     Usage u;
     u.AddSampler();
 
@@ -120,7 +121,7 @@ TEST_F(SpvParserTest, Usage_AddSampler) {
 }
 
 TEST_F(SpvParserTest, Usage_AddComparisonSampler) {
-    std::ostringstream ss;
+    utils::StringStream ss;
     Usage u;
     u.AddComparisonSampler();
 
@@ -144,7 +145,7 @@ TEST_F(SpvParserTest, Usage_AddComparisonSampler) {
 }
 
 TEST_F(SpvParserTest, Usage_AddTexture) {
-    std::ostringstream ss;
+    utils::StringStream ss;
     Usage u;
     u.AddTexture();
 
@@ -168,7 +169,7 @@ TEST_F(SpvParserTest, Usage_AddTexture) {
 }
 
 TEST_F(SpvParserTest, Usage_AddSampledTexture) {
-    std::ostringstream ss;
+    utils::StringStream ss;
     Usage u;
     u.AddSampledTexture();
 
@@ -192,7 +193,7 @@ TEST_F(SpvParserTest, Usage_AddSampledTexture) {
 }
 
 TEST_F(SpvParserTest, Usage_AddMultisampledTexture) {
-    std::ostringstream ss;
+    utils::StringStream ss;
     Usage u;
     u.AddMultisampledTexture();
 
@@ -216,7 +217,7 @@ TEST_F(SpvParserTest, Usage_AddMultisampledTexture) {
 }
 
 TEST_F(SpvParserTest, Usage_AddDepthTexture) {
-    std::ostringstream ss;
+    utils::StringStream ss;
     Usage u;
     u.AddDepthTexture();
 
@@ -240,7 +241,7 @@ TEST_F(SpvParserTest, Usage_AddDepthTexture) {
 }
 
 TEST_F(SpvParserTest, Usage_AddStorageReadTexture) {
-    std::ostringstream ss;
+    utils::StringStream ss;
     Usage u;
     u.AddStorageReadTexture();
 
@@ -264,7 +265,7 @@ TEST_F(SpvParserTest, Usage_AddStorageReadTexture) {
 }
 
 TEST_F(SpvParserTest, Usage_AddStorageWriteTexture) {
-    std::ostringstream ss;
+    utils::StringStream ss;
     Usage u;
     u.AddStorageWriteTexture();