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#ifndef SLANG_CORE_WRITER_H
#define SLANG_CORE_WRITER_H
#include "slang-com-helper.h"
#include "slang-com-ptr.h"
#include "slang-list.h"
#include "slang-string.h"
#include <mutex>
namespace Slang
{
class WriterHelper
{
public:
SLANG_ATTR_PRINTF(2, 3)
SlangResult print(const char* format, ...);
SlangResult put(const char* text);
SlangResult put(const UnownedStringSlice& text);
SLANG_FORCE_INLINE SlangResult write(const char* chars, size_t numChars)
{
return m_writer->write(chars, numChars);
}
SLANG_FORCE_INLINE void flush() { m_writer->flush(); }
ISlangWriter* getWriter() const { return m_writer; }
WriterHelper(ISlangWriter* writer)
: m_writer(writer)
{
}
protected:
ISlangWriter* m_writer;
};
struct WriterFlag
{
enum Enum : uint32_t
{
IsStatic = 0x1, ///< Means non ref counted
IsConsole = 0x2, ///< True if console
IsUnowned = 0x4, ///< True if doesn't own contained type
AutoFlush = 0x8, ///< Automatically flushes after every call
};
private:
WriterFlag() = delete;
};
typedef uint32_t WriterFlags;
class BaseWriter : public ISlangWriter, public RefObject
{
public:
// ISlangUnknown
SLANG_REF_OBJECT_IUNKNOWN_QUERY_INTERFACE
SLANG_REF_OBJECT_IUNKNOWN_ADD_REF
SLANG_NO_THROW uint32_t SLANG_MCALL release() SLANG_OVERRIDE
{
return (m_flags & WriterFlag::IsStatic) ? (uint32_t)decreaseReference()
: (uint32_t)releaseReference();
}
// ISlangWriter - default impl
SLANG_NO_THROW virtual void SLANG_MCALL flush() SLANG_OVERRIDE {}
SLANG_NO_THROW virtual bool SLANG_MCALL isConsole() SLANG_OVERRIDE
{
return (m_flags & WriterFlag::IsConsole) != 0;
}
SLANG_NO_THROW virtual SlangResult SLANG_MCALL setMode(SlangWriterMode mode) SLANG_OVERRIDE
{
SLANG_UNUSED(mode);
return SLANG_FAIL;
}
BaseWriter(WriterFlags flags)
: m_flags(flags)
{
}
protected:
ISlangUnknown* getInterface(const Guid& guid);
WriterFlags m_flags;
};
/* Implemented the append buffer part of the writer, such that calls to begin/endAppendBuffer are
* transformed into appropriate calls to write method */
class AppendBufferWriter : public BaseWriter
{
public:
typedef BaseWriter Parent;
// ISlangWriter default impl for appendBuffer
SLANG_NO_THROW char* SLANG_MCALL beginAppendBuffer(size_t maxNumChars) SLANG_OVERRIDE;
SLANG_NO_THROW SlangResult SLANG_MCALL endAppendBuffer(char* buffer, size_t numChars)
SLANG_OVERRIDE;
AppendBufferWriter(WriterFlags flags)
: Parent(flags)
{
}
protected:
List<char> m_appendBuffer;
std::mutex mutex;
};
class CallbackWriter : public AppendBufferWriter
{
public:
typedef AppendBufferWriter Parent;
// ISlangWriter
SLANG_NO_THROW char* SLANG_MCALL beginAppendBuffer(size_t maxNumChars) SLANG_OVERRIDE;
SLANG_NO_THROW virtual SlangResult SLANG_MCALL write(const char* chars, size_t numChars)
SLANG_OVERRIDE;
CallbackWriter(SlangDiagnosticCallback callback, const void* data, WriterFlags flags)
: Parent(flags), m_callback(callback), m_data(data)
{
}
protected:
SlangDiagnosticCallback m_callback;
const void* m_data;
};
class FileWriter : public AppendBufferWriter
{
public:
typedef AppendBufferWriter Parent;
// ISlangWriter
SLANG_NO_THROW virtual SlangResult SLANG_MCALL write(const char* chars, size_t numChars)
SLANG_OVERRIDE;
SLANG_NO_THROW virtual void SLANG_MCALL flush() SLANG_OVERRIDE;
SLANG_NO_THROW virtual SlangResult SLANG_MCALL setMode(SlangWriterMode mode) SLANG_OVERRIDE;
static bool isFileConsole(FILE* file);
static WriterFlags getDefaultFlags(FILE* file)
{
return isFileConsole(file) ? WriterFlags(WriterFlag::IsConsole) : 0;
}
/// Ctor
FileWriter(FILE* file, WriterFlags flags)
: Parent(flags | getDefaultFlags(file)), m_file(file)
{
}
///
static SlangResult create(
const char* filePath,
const char* writeOptions,
WriterFlags flags,
ComPtr<ISlangWriter>& outWriter);
static SlangResult createBinary(
const char* filePath,
WriterFlags flags,
ComPtr<ISlangWriter>& outWriter)
{
return create(filePath, "wb", flags, outWriter);
}
static SlangResult createText(
const char* filePath,
WriterFlags flags,
ComPtr<ISlangWriter>& outWriter)
{
return create(filePath, "w", flags, outWriter);
}
/// Dtor
~FileWriter();
protected:
FILE* m_file;
};
class StringWriter : public BaseWriter
{
public:
typedef BaseWriter Parent;
// ISlangWriter
SLANG_NO_THROW char* SLANG_MCALL beginAppendBuffer(size_t maxNumChars) SLANG_OVERRIDE;
SLANG_NO_THROW SlangResult SLANG_MCALL endAppendBuffer(char* buffer, size_t numChars)
SLANG_OVERRIDE;
SLANG_NO_THROW virtual SlangResult SLANG_MCALL write(const char* chars, size_t numChars)
SLANG_OVERRIDE;
/// Ctor
StringWriter(StringBuilder* builder, WriterFlags flags = 0)
: Parent(flags), m_builder(builder)
{
}
~StringWriter() {}
protected:
StringBuilder* m_builder;
};
class NullWriter : public AppendBufferWriter
{
public:
typedef AppendBufferWriter Parent;
// ISlangWriter
SLANG_NO_THROW virtual SlangResult SLANG_MCALL write(const char* chars, size_t numChars)
SLANG_OVERRIDE
{
SLANG_UNUSED(chars);
SLANG_UNUSED(numChars);
return SLANG_OK;
}
/// Ctor
NullWriter(WriterFlags flags)
: Parent(flags)
{
}
};
} // namespace Slang
#endif // SLANG_TEXT_WRITER_H
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