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DebugWriter.cpp
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123 lines (106 loc) · 3.47 KB
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//-------------------------------------------------------------------------------------------------------
// Copyright (C) Microsoft. All rights reserved.
// Licensed under the MIT license. See LICENSE.txt file in the project root for full license information.
//-------------------------------------------------------------------------------------------------------
#include "ParserPch.h"
#if ENABLE_REGEX_CONFIG_OPTIONS
namespace UnifiedRegex
{
const char16* const DebugWriter::hex = _u("0123456789abcdef");
DebugWriter::DebugWriter() : indent(0), nlPending(false)
{
}
#define PRINT_DEBUG_WRITER() \
va_list argptr; \
va_start(argptr, form); \
int len = _vsnwprintf_s(buf, bufLen, _TRUNCATE, form, argptr); \
if (len < 0 || len >= bufLen - 1) \
Output::Print(_u("<not enough buffer space to format>")); \
else \
{ \
if (len > 0) \
CheckForNewline(); \
Output::Print(_u("%s"), buf); \
} \
va_end(argptr)
void __cdecl DebugWriter::Print(const Char *form, ...)
{
PRINT_DEBUG_WRITER();
}
void __cdecl DebugWriter::PrintEOL(const Char *form, ...)
{
PRINT_DEBUG_WRITER();
EOL();
}
void DebugWriter::PrintEscapedString(const Char* str, CharCount len)
{
Assert(str != 0);
CheckForNewline();
const Char* pl = str + len;
for (const Char* p = str; p < pl; p++)
{
if (*p == '"')
Output::Print(_u("\\\""));
else
PrintEscapedChar(*p);
}
}
void DebugWriter::PrintQuotedString(const Char* str, CharCount len)
{
CheckForNewline();
if (str == 0)
Output::Print(_u("null"));
else
{
Output::Print(_u("\""));
PrintEscapedString(str, len);
Output::Print(_u("\""));
}
}
void DebugWriter::PrintEscapedChar(const Char c)
{
CheckForNewline();
if (c > 0xff)
Output::Print(_u("\\u%lc%lc%lc%lc"), hex[c >> 12], hex[(c >> 8) & 0xf], hex[(c >> 4) & 0xf], hex[c & 0xf]);
else if (c == '-')
Output::Print(_u("\\x2d"));
else if (c < ' ' || c > '~')
Output::Print(_u("\\x%lc%lc"), hex[c >> 4], hex[c & 0xf]);
else
Output::Print(_u("%lc"), c);
}
void DebugWriter::PrintQuotedChar(const Char c)
{
CheckForNewline();
Output::Print(_u("'"));
if (c == '\'')
Output::Print(_u("\\'"));
else
PrintEscapedChar(c);
Output::Print(_u("'"));
}
void DebugWriter::EOL()
{
CheckForNewline();
nlPending = true;
}
void DebugWriter::Indent()
{
indent++;
}
void DebugWriter::Unindent()
{
indent--;
}
void DebugWriter::Flush()
{
Output::Print(_u("\n"));
Output::Flush();
nlPending = false;
}
void DebugWriter::BeginLine()
{
Output::Print(_u("\n%*s"), indent * 4, _u(""));
}
}
#endif