llvm-project/lldb/source/Core/FormatManager.cpp

//===-- FormatManager.cpp -------------------------------------------*- C++ -*-===//
//
//                     The LLVM Compiler Infrastructure
//
// This file is distributed under the University of Illinois Open Source
// License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//

#include "lldb/Core/FormatManager.h"

// C Includes
// C++ Includes
// Other libraries and framework includes
// Project includes

using namespace lldb;
using namespace lldb_private;


struct FormatInfo
{
    Format format;
    const char format_char; // One or more format characters that can be used for this format.
    const char *format_name;    // Long format name that can be used to specify the current format
};

static FormatInfo 
g_format_infos[] = 
{
    { eFormatDefault        , '\0'  , "default"             },
    { eFormatBoolean        , 'B'   , "boolean"             },
    { eFormatBinary         , 'b'   , "binary"              },
    { eFormatBytes          , 'y'   , "bytes"               },
    { eFormatBytesWithASCII , 'Y'   , "bytes with ASCII"    },
    { eFormatChar           , 'c'   , "character"           },
    { eFormatCharPrintable  , 'C'   , "printable character" },
    { eFormatComplexFloat   , 'F'   , "complex float"       },
    { eFormatCString        , 's'   , "c-string"            },
    { eFormatDecimal        , 'i'   , "signed decimal"      },
    { eFormatEnum           , 'E'   , "enumeration"         },
    { eFormatHex            , 'x'   , "hex"                 },
    { eFormatFloat          , 'f'   , "float"               },
    { eFormatOctal          , 'o'   , "octal"               },
    { eFormatOSType         , 'O'   , "OSType"              },
    { eFormatUnicode16      , 'U'   , "unicode16"           },
    { eFormatUnicode32      , '\0'  , "unicode32"           },
    { eFormatUnsigned       , 'u'   , "unsigned decimal"    },
    { eFormatPointer        , 'p'   , "pointer"             },
    { eFormatVectorOfChar   , '\0'  , "char[]"              },
    { eFormatVectorOfSInt8  , '\0'  , "int8_t[]"            },
    { eFormatVectorOfUInt8  , '\0'  , "uint8_t[]"           },
    { eFormatVectorOfSInt16 , '\0'  , "int16_t[]"           },
    { eFormatVectorOfUInt16 , '\0'  , "uint16_t[]"          },
    { eFormatVectorOfSInt32 , '\0'  , "int16_t[]"           },
    { eFormatVectorOfUInt32 , '\0'  , "uint16_t[]"          },
    { eFormatVectorOfSInt64 , '\0'  , "int16_t[]"           },
    { eFormatVectorOfUInt64 , '\0'  , "uint16_t[]"          },
    { eFormatVectorOfFloat32, '\0'  , "float32[]"           },
    { eFormatVectorOfFloat64, '\0'  , "float64[]"           },
    { eFormatVectorOfUInt128, '\0'  , "uint128_t[]"         },
    { eFormatComplexInteger , 'I'   , "complex integer"     },
    { eFormatCharArray      , 'a'   , "character array"     }
};

static uint32_t 
g_num_format_infos = sizeof(g_format_infos)/sizeof(FormatInfo);

static bool
GetFormatFromFormatChar (char format_char, Format &format)
{
    for (uint32_t i=0; i<g_num_format_infos; ++i)
    {
        if (g_format_infos[i].format_char == format_char)
        {
            format = g_format_infos[i].format;
            return true;
        }
    }
    format = eFormatInvalid;
    return false;
}

static bool
GetFormatFromFormatName (const char *format_name, bool partial_match_ok, Format &format)
{
    uint32_t i;
    for (i=0; i<g_num_format_infos; ++i)
    {
        if (strcasecmp (g_format_infos[i].format_name, format_name) == 0)
        {
            format = g_format_infos[i].format;
            return true;
        }
    }
    
    if (partial_match_ok)
    {
        for (i=0; i<g_num_format_infos; ++i)
        {
            if (strcasestr (g_format_infos[i].format_name, format_name) == g_format_infos[i].format_name)
            {
                format = g_format_infos[i].format;
                return true;
            }
        }
    }
    format = eFormatInvalid;
    return false;
}

bool
FormatManager::GetFormatFromCString (const char *format_cstr,
                                     bool partial_match_ok,
                                     lldb::Format &format)
{
    bool success = false;
    if (format_cstr && format_cstr[0])
    {
        if (format_cstr[1] == '\0')
        {
            success = GetFormatFromFormatChar (format_cstr[0], format);
            if (success)
                return true;
        }
        
        success = GetFormatFromFormatName (format_cstr, partial_match_ok, format);
    }
    if (!success)
        format = eFormatInvalid;
    return success;
}

char
FormatManager::GetFormatAsFormatChar (lldb::Format format)
{
    for (uint32_t i=0; i<g_num_format_infos; ++i)
    {
        if (g_format_infos[i].format == format)
            return g_format_infos[i].format_char;
    }
    return '\0';
}
    


const char *
FormatManager::GetFormatAsCString (Format format)
{
    if (format >= eFormatDefault && format < kNumFormats)
        return g_format_infos[format].format_name;
    return NULL;
}