// Protocol Buffers - Google's data interchange format
// Copyright 2008 Google Inc. All rights reserved.
// https://developers.google.com/protocol-buffers/
//
// Redistribution and use in source and binary forms, with or without
// modification, are permitted provided that the following conditions are
// met:
//
// * Redistributions of source code must retain the above copyright
// notice, this list of conditions and the following disclaimer.
// * Redistributions in binary form must reproduce the above
// copyright notice, this list of conditions and the following disclaimer
// in the documentation and/or other materials provided with the
// distribution.
// * Neither the name of Google Inc. nor the names of its
// contributors may be used to endorse or promote products derived from
// this software without specific prior written permission.
//
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
// -----------------------------------------------------------------------------
// Ruby <-> upb data conversion functions.
//
// This file Also contains a few other assorted algorithms on upb_MessageValue.
//
// None of the algorithms in this file require any access to the internal
// representation of Ruby or upb objects.
// -----------------------------------------------------------------------------
#include "convert.h"
#include "message.h"
#include "protobuf.h"
static upb_StringView Convert_StringData(VALUE str, upb_Arena* arena) {
upb_StringView ret;
if (arena) {
char* ptr = upb_Arena_Malloc(arena, RSTRING_LEN(str));
memcpy(ptr, RSTRING_PTR(str), RSTRING_LEN(str));
ret.data = ptr;
} else {
// Data is only needed temporarily (within map lookup).
ret.data = RSTRING_PTR(str);
}
ret.size = RSTRING_LEN(str);
return ret;
}
static bool is_ruby_num(VALUE value) {
return (TYPE(value) == T_FLOAT || TYPE(value) == T_FIXNUM ||
TYPE(value) == T_BIGNUM);
}
static void Convert_CheckInt(const char* name, upb_CType type, VALUE val) {
if (!is_ruby_num(val)) {
rb_raise(cTypeError,
"Expected number type for integral field '%s' (given %s).", name,
rb_class2name(CLASS_OF(val)));
}
// NUM2{INT,UINT,LL,ULL} macros do the appropriate range checks on upper
// bound; we just need to do precision checks (i.e., disallow rounding) and
// check for < 0 on unsigned types.
if (TYPE(val) == T_FLOAT) {
double dbl_val = NUM2DBL(val);
if (floor(dbl_val) != dbl_val) {
rb_raise(rb_eRangeError,
"Non-integral floating point value assigned to integer field "
"'%s' (given %s).",
name, rb_class2name(CLASS_OF(val)));
}
}
if (type == kUpb_CType_UInt32 || type == kUpb_CType_UInt64) {
if (NUM2DBL(val) < 0) {
rb_raise(
rb_eRangeError,
"Assigning negative value to unsigned integer field '%s' (given %s).",
name, rb_class2name(CLASS_OF(val)));
}
}
}
static int32_t Convert_ToEnum(VALUE value, const char* name,
const upb_EnumDef* e) {
int32_t val;
switch (TYPE(value)) {
case T_FLOAT:
case T_FIXNUM:
case T_BIGNUM:
Convert_CheckInt(name, kUpb_CType_Int32, value);
val = NUM2INT(value);
break;
case T_STRING: {
const upb_EnumValueDef* ev = upb_EnumDef_FindValueByNameWithSize(
e, RSTRING_PTR(value), RSTRING_LEN(value));
if (!ev) goto unknownval;
val = upb_EnumValueDef_Number(ev);
break;
}
case T_SYMBOL: {
const upb_EnumValueDef* ev =
upb_EnumDef_FindValueByName(e, rb_id2name(SYM2ID(value)));
if (!ev)
goto unknownval;
val = upb_EnumValueDef_Number(ev);
break;
}
default:
rb_raise(cTypeError,
"Expected number or symbol type for enum field '%s'.", name);
}
return val;
unknownval:
rb_raise(rb_eRangeError, "Unknown symbol value for enum field '%s'.", name);
}
upb_MessageValue Convert_RubyToUpb(VALUE value, const char* name,
TypeInfo type_info, upb_Arena* arena) {
upb_MessageValue ret;
switch (type_info.type) {
case kUpb_CType_Float:
if (!is_ruby_num(value)) {
rb_raise(cTypeError,
"Expected number type for float field '%s' (given %s).", name,
rb_class2name(CLASS_OF(value)));
}
ret.float_val = NUM2DBL(value);
break;
case kUpb_CType_Double:
if (!is_ruby_num(value)) {
rb_raise(cTypeError,
"Expected number type for double field '%s' (given %s).", name,
rb_class2name(CLASS_OF(value)));
}
ret.double_val = NUM2DBL(value);
break;
case kUpb_CType_Bool: {
if (value == Qtrue) {
ret.bool_val = 1;
} else if (value == Qfalse) {
ret.bool_val = 0;
} else {
rb_raise(cTypeError,
"Invalid argument for boolean field '%s' (given %s).", name,
rb_class2name(CLASS_OF(value)));
}
break;
}
case kUpb_CType_String: {
VALUE utf8 = rb_enc_from_encoding(rb_utf8_encoding());
if (rb_obj_class(value) == rb_cSymbol) {
value = rb_funcall(value, rb_intern("to_s"), 0);
} else if (rb_obj_class(value) != rb_cString) {
rb_raise(cTypeError,
"Invalid argument for string field '%s' (given %s).", name,
rb_class2name(CLASS_OF(value)));
}
if (rb_obj_encoding(value) != utf8) {
// Note: this will not duplicate underlying string data unless
// necessary.
value = rb_str_encode(value, utf8, 0, Qnil);
if (rb_enc_str_coderange(value) == ENC_CODERANGE_BROKEN) {
rb_raise(rb_eEncodingError, "String is invalid UTF-8");
}
}
ret.str_val = Convert_StringData(value, arena);
break;
}
case kUpb_CType_Bytes: {
VALUE bytes = rb_enc_from_encoding(rb_ascii8bit_encoding());
if (rb_obj_class(value) != rb_cString) {
rb_raise(cTypeError,
"Invalid argument for bytes field '%s' (given %s).", name,
rb_class2name(CLASS_OF(value)));
}
if (rb_obj_encoding(value) != bytes) {
// Note: this will not duplicate underlying string data unless
// necessary.
// TODO(haberman): is this really necessary to get raw bytes?
value = rb_str_encode(value, bytes, 0, Qnil);
}
ret.str_val = Convert_StringData(value, arena);
break;
}
case kUpb_CType_Message:
ret.msg_val =
Message_GetUpbMessage(value, type_info.def.msgdef, name, arena);
break;
case kUpb_CType_Enum:
ret.int32_val = Convert_ToEnum(value, name, type_info.def.enumdef);
break;
case kUpb_CType_Int32:
case kUpb_CType_Int64:
case kUpb_CType_UInt32:
case kUpb_CType_UInt64:
Convert_CheckInt(name, type_info.type, value);
switch (type_info.type) {
case kUpb_CType_Int32:
ret.int32_val = NUM2INT(value);
break;
case kUpb_CType_Int64:
ret.int64_val = NUM2LL(value);
break;
case kUpb_CType_UInt32:
ret.uint32_val = NUM2UINT(value);
break;
case kUpb_CType_UInt64:
ret.uint64_val = NUM2ULL(value);
break;
default:
break;
}
break;
default:
break;
}
return ret;
}
VALUE Convert_UpbToRuby(upb_MessageValue upb_val, TypeInfo type_info,
VALUE arena) {
switch (type_info.type) {
case kUpb_CType_Float:
return DBL2NUM(upb_val.float_val);
case kUpb_CType_Double:
return DBL2NUM(upb_val.double_val);
case kUpb_CType_Bool:
return upb_val.bool_val ? Qtrue : Qfalse;
case kUpb_CType_Int32:
return INT2NUM(upb_val.int32_val);
case kUpb_CType_Int64:
return LL2NUM(upb_val.int64_val);
case kUpb_CType_UInt32:
return UINT2NUM(upb_val.uint32_val);
case kUpb_CType_UInt64:
return ULL2NUM(upb_val.int64_val);
case kUpb_CType_Enum: {
const upb_EnumValueDef *ev = upb_EnumDef_FindValueByNumber(
type_info.def.enumdef, upb_val.int32_val);
if (ev) {
return ID2SYM(rb_intern(upb_EnumValueDef_Name(ev)));
} else {
return INT2NUM(upb_val.int32_val);
}
}
case kUpb_CType_String: {
VALUE str_rb = rb_str_new(upb_val.str_val.data, upb_val.str_val.size);
rb_enc_associate(str_rb, rb_utf8_encoding());
rb_obj_freeze(str_rb);
return str_rb;
}
case kUpb_CType_Bytes: {
VALUE str_rb = rb_str_new(upb_val.str_val.data, upb_val.str_val.size);
rb_enc_associate(str_rb, rb_ascii8bit_encoding());
rb_obj_freeze(str_rb);
return str_rb;
}
case kUpb_CType_Message:
return Message_GetRubyWrapper((upb_Message*)upb_val.msg_val,
type_info.def.msgdef, arena);
default:
rb_raise(rb_eRuntimeError, "Convert_UpbToRuby(): Unexpected type %d",
(int)type_info.type);
}
}
upb_MessageValue Msgval_DeepCopy(upb_MessageValue msgval, TypeInfo type_info,
upb_Arena* arena) {
upb_MessageValue new_msgval;
switch (type_info.type) {
default:
memcpy(&new_msgval, &msgval, sizeof(msgval));
break;
case kUpb_CType_String:
case kUpb_CType_Bytes: {
size_t n = msgval.str_val.size;
char* mem = upb_Arena_Malloc(arena, n);
new_msgval.str_val.data = mem;
new_msgval.str_val.size = n;
memcpy(mem, msgval.str_val.data, n);
break;
}
case kUpb_CType_Message:
new_msgval.msg_val =
Message_deep_copy(msgval.msg_val, type_info.def.msgdef, arena);
break;
}
return new_msgval;
}
bool Msgval_IsEqual(upb_MessageValue val1, upb_MessageValue val2,
TypeInfo type_info) {
switch (type_info.type) {
case kUpb_CType_Bool:
return memcmp(&val1, &val2, 1) == 0;
case kUpb_CType_Float:
case kUpb_CType_Int32:
case kUpb_CType_UInt32:
case kUpb_CType_Enum:
return memcmp(&val1, &val2, 4) == 0;
case kUpb_CType_Double:
case kUpb_CType_Int64:
case kUpb_CType_UInt64:
return memcmp(&val1, &val2, 8) == 0;
case kUpb_CType_String:
case kUpb_CType_Bytes:
return val1.str_val.size == val2.str_val.size &&
memcmp(val1.str_val.data, val2.str_val.data, val1.str_val.size) ==
0;
case kUpb_CType_Message:
return Message_Equal(val1.msg_val, val2.msg_val, type_info.def.msgdef);
default:
rb_raise(rb_eRuntimeError, "Internal error, unexpected type");
}
}
uint64_t Msgval_GetHash(upb_MessageValue val, TypeInfo type_info,
uint64_t seed) {
switch (type_info.type) {
case kUpb_CType_Bool:
return _upb_Hash(&val, 1, seed);
case kUpb_CType_Float:
case kUpb_CType_Int32:
case kUpb_CType_UInt32:
case kUpb_CType_Enum:
return _upb_Hash(&val, 4, seed);
case kUpb_CType_Double:
case kUpb_CType_Int64:
case kUpb_CType_UInt64:
return _upb_Hash(&val, 8, seed);
case kUpb_CType_String:
case kUpb_CType_Bytes:
return _upb_Hash(val.str_val.data, val.str_val.size, seed);
case kUpb_CType_Message:
return Message_Hash(val.msg_val, type_info.def.msgdef, seed);
default:
rb_raise(rb_eRuntimeError, "Internal error, unexpected type");
}
}
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