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-rw-r--r--gfx/angle/checkout/src/libANGLE/InfoLog.h90
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diff --git a/gfx/angle/checkout/src/libANGLE/InfoLog.h b/gfx/angle/checkout/src/libANGLE/InfoLog.h
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+++ b/gfx/angle/checkout/src/libANGLE/InfoLog.h
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+//
+// Copyright 2020 The ANGLE Project Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+//
+// InfoLog.h: Defines the gl::InfoLog class to handle the logs generated when
+// compiling/linking shaders so useful error messages can be returned to the caller.
+
+#ifndef LIBANGLE_INFOLOG_H_
+#define LIBANGLE_INFOLOG_H_
+
+namespace gl
+{
+
+class InfoLog : angle::NonCopyable
+{
+ public:
+ InfoLog();
+ ~InfoLog();
+
+ size_t getLength() const;
+ void getLog(GLsizei bufSize, GLsizei *length, char *infoLog) const;
+
+ void appendSanitized(const char *message);
+ void reset();
+
+ // This helper class ensures we append a newline after writing a line.
+ class StreamHelper : angle::NonCopyable
+ {
+ public:
+ StreamHelper(StreamHelper &&rhs) : mStream(rhs.mStream) { rhs.mStream = nullptr; }
+
+ StreamHelper &operator=(StreamHelper &&rhs)
+ {
+ std::swap(mStream, rhs.mStream);
+ return *this;
+ }
+
+ ~StreamHelper()
+ {
+ // Write newline when destroyed on the stack
+ if (mStream && !mStream->str().empty())
+ {
+ (*mStream) << std::endl;
+ }
+ }
+
+ template <typename T>
+ StreamHelper &operator<<(const T &value)
+ {
+ (*mStream) << value;
+ return *this;
+ }
+
+ private:
+ friend class InfoLog;
+
+ StreamHelper(std::stringstream *stream) : mStream(stream) { ASSERT(stream); }
+
+ std::stringstream *mStream;
+ };
+
+ template <typename T>
+ StreamHelper operator<<(const T &value)
+ {
+ ensureInitialized();
+ StreamHelper helper(mLazyStream.get());
+ helper << value;
+ return helper;
+ }
+
+ std::string str() const { return mLazyStream ? mLazyStream->str() : ""; }
+
+ bool empty() const;
+
+ private:
+ void ensureInitialized()
+ {
+ if (!mLazyStream)
+ {
+ mLazyStream.reset(new std::stringstream());
+ }
+ }
+
+ std::unique_ptr<std::stringstream> mLazyStream;
+};
+
+} // namespace gl
+
+#endif // LIBANGLE_INFOLOG_H_