336 lines
11 KiB
C
Executable File
336 lines
11 KiB
C
Executable File
// Protocol Buffers - Google's data interchange format
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// Copyright 2008 Google Inc. All rights reserved.
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//
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// Use of this source code is governed by a BSD-style
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// license that can be found in the LICENSE file or at
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// https://developers.google.com/open-source/licenses/bsd
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// -----------------------------------------------------------------------------
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// Ruby <-> upb data conversion functions.
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//
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// This file Also contains a few other assorted algorithms on upb_MessageValue.
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//
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// None of the algorithms in this file require any access to the internal
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// representation of Ruby or upb objects.
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// -----------------------------------------------------------------------------
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#include "convert.h"
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#include "message.h"
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#include "protobuf.h"
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#include "shared_convert.h"
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static upb_StringView Convert_StringData(VALUE str, upb_Arena* arena) {
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upb_StringView ret;
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if (arena) {
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char* ptr = upb_Arena_Malloc(arena, RSTRING_LEN(str));
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memcpy(ptr, RSTRING_PTR(str), RSTRING_LEN(str));
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ret.data = ptr;
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} else {
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// Data is only needed temporarily (within map lookup).
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ret.data = RSTRING_PTR(str);
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}
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ret.size = RSTRING_LEN(str);
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return ret;
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}
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static bool is_ruby_num(VALUE value) {
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return (TYPE(value) == T_FLOAT || TYPE(value) == T_FIXNUM ||
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TYPE(value) == T_BIGNUM);
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}
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static void Convert_CheckInt(const char* name, upb_CType type, VALUE val) {
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if (!is_ruby_num(val)) {
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rb_raise(cTypeError,
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"Expected number type for integral field '%s' (given %s).", name,
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rb_class2name(CLASS_OF(val)));
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}
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// NUM2{INT,UINT,LL,ULL} macros do the appropriate range checks on upper
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// bound; we just need to do precision checks (i.e., disallow rounding) and
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// check for < 0 on unsigned types.
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if (TYPE(val) == T_FLOAT) {
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double dbl_val = NUM2DBL(val);
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if (floor(dbl_val) != dbl_val) {
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rb_raise(rb_eRangeError,
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"Non-integral floating point value assigned to integer field "
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"'%s' (given %s).",
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name, rb_class2name(CLASS_OF(val)));
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}
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}
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if (type == kUpb_CType_UInt32 || type == kUpb_CType_UInt64) {
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if (NUM2DBL(val) < 0) {
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rb_raise(
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rb_eRangeError,
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"Assigning negative value to unsigned integer field '%s' (given %s).",
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name, rb_class2name(CLASS_OF(val)));
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}
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}
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}
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static int32_t Convert_ToEnum(VALUE value, const char* name,
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const upb_EnumDef* e) {
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int32_t val;
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switch (TYPE(value)) {
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case T_FLOAT:
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case T_FIXNUM:
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case T_BIGNUM:
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Convert_CheckInt(name, kUpb_CType_Int32, value);
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val = NUM2INT(value);
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break;
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case T_STRING: {
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const upb_EnumValueDef* ev = upb_EnumDef_FindValueByNameWithSize(
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e, RSTRING_PTR(value), RSTRING_LEN(value));
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if (!ev) goto unknownval;
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val = upb_EnumValueDef_Number(ev);
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break;
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}
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case T_SYMBOL: {
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const upb_EnumValueDef* ev =
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upb_EnumDef_FindValueByName(e, rb_id2name(SYM2ID(value)));
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if (!ev) goto unknownval;
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val = upb_EnumValueDef_Number(ev);
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break;
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}
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default:
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rb_raise(cTypeError,
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"Expected number or symbol type for enum field '%s'.", name);
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}
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return val;
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unknownval:
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rb_raise(rb_eRangeError, "Unknown symbol value for enum field '%s'.", name);
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}
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VALUE Convert_CheckStringUtf8(VALUE str) {
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VALUE utf8 = rb_enc_from_encoding(rb_utf8_encoding());
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if (rb_obj_encoding(str) == utf8) {
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// Note: Just because a string is marked as having UTF-8 encoding does
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// not mean that it is *valid* UTF-8. We have to check separately
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// whether it is valid.
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if (rb_enc_str_coderange(str) == ENC_CODERANGE_BROKEN) {
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VALUE exc =
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rb_const_get_at(rb_cEncoding, rb_intern("InvalidByteSequenceError"));
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rb_raise(exc, "String is invalid UTF-8");
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}
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} else {
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// Note: this will not duplicate underlying string data unless
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// necessary.
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//
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// This will throw an exception if the conversion cannot be performed:
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// - Encoding::UndefinedConversionError if certain characters cannot be
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// converted to UTF-8.
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// - Encoding::InvalidByteSequenceError if certain characters were invalid
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// in the source encoding.
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str = rb_str_encode(str, utf8, 0, Qnil);
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PBRUBY_ASSERT(rb_enc_str_coderange(str) != ENC_CODERANGE_BROKEN);
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}
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return str;
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}
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upb_MessageValue Convert_RubyToUpb(VALUE value, const char* name,
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TypeInfo type_info, upb_Arena* arena) {
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upb_MessageValue ret;
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switch (type_info.type) {
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case kUpb_CType_Float:
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if (!is_ruby_num(value)) {
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rb_raise(cTypeError,
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"Expected number type for float field '%s' (given %s).", name,
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rb_class2name(CLASS_OF(value)));
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}
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ret.float_val = NUM2DBL(value);
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break;
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case kUpb_CType_Double:
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if (!is_ruby_num(value)) {
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rb_raise(cTypeError,
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"Expected number type for double field '%s' (given %s).", name,
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rb_class2name(CLASS_OF(value)));
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}
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ret.double_val = NUM2DBL(value);
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break;
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case kUpb_CType_Bool: {
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if (value == Qtrue) {
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ret.bool_val = 1;
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} else if (value == Qfalse) {
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ret.bool_val = 0;
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} else {
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rb_raise(cTypeError,
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"Invalid argument for boolean field '%s' (given %s).", name,
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rb_class2name(CLASS_OF(value)));
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}
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break;
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}
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case kUpb_CType_String:
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if (rb_obj_class(value) == rb_cSymbol) {
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value = rb_funcall(value, rb_intern("to_s"), 0);
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} else if (!rb_obj_is_kind_of(value, rb_cString)) {
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rb_raise(cTypeError,
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"Invalid argument for string field '%s' (given %s).", name,
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rb_class2name(CLASS_OF(value)));
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}
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value = Convert_CheckStringUtf8(value);
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ret.str_val = Convert_StringData(value, arena);
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break;
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case kUpb_CType_Bytes: {
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VALUE bytes = rb_enc_from_encoding(rb_ascii8bit_encoding());
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if (rb_obj_class(value) != rb_cString) {
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rb_raise(cTypeError,
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"Invalid argument for bytes field '%s' (given %s).", name,
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rb_class2name(CLASS_OF(value)));
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}
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if (rb_obj_encoding(value) != bytes) {
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// Note: this will not duplicate underlying string data unless
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// necessary.
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// TODO: is this really necessary to get raw bytes?
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value = rb_str_encode(value, bytes, 0, Qnil);
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}
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ret.str_val = Convert_StringData(value, arena);
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break;
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}
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case kUpb_CType_Message:
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ret.msg_val =
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Message_GetUpbMessage(value, type_info.def.msgdef, name, arena);
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break;
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case kUpb_CType_Enum:
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ret.int32_val = Convert_ToEnum(value, name, type_info.def.enumdef);
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break;
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case kUpb_CType_Int32:
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case kUpb_CType_Int64:
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case kUpb_CType_UInt32:
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case kUpb_CType_UInt64:
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Convert_CheckInt(name, type_info.type, value);
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switch (type_info.type) {
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case kUpb_CType_Int32:
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ret.int32_val = NUM2INT(value);
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break;
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case kUpb_CType_Int64:
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ret.int64_val = NUM2LL(value);
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break;
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case kUpb_CType_UInt32:
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ret.uint32_val = NUM2UINT(value);
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break;
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case kUpb_CType_UInt64:
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ret.uint64_val = NUM2ULL(value);
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break;
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default:
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rb_raise(cTypeError, "Convert_RubyToUpb(): Unexpected type %d",
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(int)type_info.type);
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}
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break;
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default:
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rb_raise(cTypeError, "Convert_RubyToUpb(): Unexpected type %d",
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(int)type_info.type);
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}
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return ret;
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}
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VALUE Convert_UpbToRuby(upb_MessageValue upb_val, TypeInfo type_info,
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VALUE arena) {
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switch (type_info.type) {
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case kUpb_CType_Float:
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return DBL2NUM(upb_val.float_val);
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case kUpb_CType_Double:
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return DBL2NUM(upb_val.double_val);
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case kUpb_CType_Bool:
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return upb_val.bool_val ? Qtrue : Qfalse;
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case kUpb_CType_Int32:
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return INT2NUM(upb_val.int32_val);
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case kUpb_CType_Int64:
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return LL2NUM(upb_val.int64_val);
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case kUpb_CType_UInt32:
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return UINT2NUM(upb_val.uint32_val);
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case kUpb_CType_UInt64:
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return ULL2NUM(upb_val.int64_val);
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case kUpb_CType_Enum: {
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const upb_EnumValueDef* ev = upb_EnumDef_FindValueByNumber(
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type_info.def.enumdef, upb_val.int32_val);
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if (ev) {
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return ID2SYM(rb_intern(upb_EnumValueDef_Name(ev)));
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} else {
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return INT2NUM(upb_val.int32_val);
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}
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}
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case kUpb_CType_String: {
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VALUE str_rb = rb_str_new(upb_val.str_val.data, upb_val.str_val.size);
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rb_enc_associate(str_rb, rb_utf8_encoding());
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rb_obj_freeze(str_rb);
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return str_rb;
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}
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case kUpb_CType_Bytes: {
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VALUE str_rb = rb_str_new(upb_val.str_val.data, upb_val.str_val.size);
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rb_enc_associate(str_rb, rb_ascii8bit_encoding());
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rb_obj_freeze(str_rb);
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return str_rb;
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}
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case kUpb_CType_Message:
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return Message_GetRubyWrapper((upb_Message*)upb_val.msg_val,
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type_info.def.msgdef, arena);
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default:
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rb_raise(rb_eRuntimeError, "Convert_UpbToRuby(): Unexpected type %d",
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(int)type_info.type);
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}
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}
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upb_MessageValue Msgval_DeepCopy(upb_MessageValue msgval, TypeInfo type_info,
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upb_Arena* arena) {
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upb_MessageValue new_msgval;
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switch (type_info.type) {
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default:
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memcpy(&new_msgval, &msgval, sizeof(msgval));
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break;
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case kUpb_CType_String:
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case kUpb_CType_Bytes: {
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size_t n = msgval.str_val.size;
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char* mem = upb_Arena_Malloc(arena, n);
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new_msgval.str_val.data = mem;
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new_msgval.str_val.size = n;
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memcpy(mem, msgval.str_val.data, n);
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break;
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}
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case kUpb_CType_Message:
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new_msgval.msg_val =
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Message_deep_copy(msgval.msg_val, type_info.def.msgdef, arena);
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break;
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}
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return new_msgval;
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}
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bool Msgval_IsEqual(upb_MessageValue val1, upb_MessageValue val2,
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TypeInfo type_info) {
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upb_Status status;
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upb_Status_Clear(&status);
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bool return_value = shared_Msgval_IsEqual(val1, val2, type_info.type,
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type_info.def.msgdef, &status);
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if (upb_Status_IsOk(&status)) {
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return return_value;
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} else {
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rb_raise(rb_eRuntimeError, "Msgval_IsEqual(): %s",
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upb_Status_ErrorMessage(&status));
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}
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}
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uint64_t Msgval_GetHash(upb_MessageValue val, TypeInfo type_info,
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uint64_t seed) {
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upb_Status status;
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upb_Status_Clear(&status);
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uint64_t return_value = shared_Msgval_GetHash(
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val, type_info.type, type_info.def.msgdef, seed, &status);
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if (upb_Status_IsOk(&status)) {
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return return_value;
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} else {
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rb_raise(rb_eRuntimeError, "Msgval_GetHash(): %s",
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upb_Status_ErrorMessage(&status));
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}
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}
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