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FIX/SBE - OSI layer 6 presentation for encoding and decoding application messages in binary format for low-latency applications.
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/*
* Copyright 2013-2024 Real Logic Limited.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* https://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package uk.co.real_logic.sbe.generation.c;
import org.agrona.Verify;
import org.agrona.generation.OutputManager;
import uk.co.real_logic.sbe.PrimitiveType;
import uk.co.real_logic.sbe.generation.CodeGenerator;
import uk.co.real_logic.sbe.generation.Generators;
import uk.co.real_logic.sbe.ir.Encoding;
import uk.co.real_logic.sbe.ir.Ir;
import uk.co.real_logic.sbe.ir.Signal;
import uk.co.real_logic.sbe.ir.Token;
import java.io.IOException;
import java.io.Writer;
import java.nio.ByteOrder;
import java.util.ArrayList;
import java.util.List;
import static uk.co.real_logic.sbe.generation.Generators.toLowerFirstChar;
import static uk.co.real_logic.sbe.generation.Generators.toUpperFirstChar;
import static uk.co.real_logic.sbe.generation.c.CUtil.*;
import static uk.co.real_logic.sbe.ir.GenerationUtil.*;
/**
* Codec generator for the C11 programming language.
*/
@SuppressWarnings("MethodLength")
public class CGenerator implements CodeGenerator
{
private final Ir ir;
private final OutputManager outputManager;
/**
* Create a new C language {@link CodeGenerator}.
*
* @param ir for the messages and types.
* @param outputManager for generating the codecs to.
*/
public CGenerator(final Ir ir, final OutputManager outputManager)
{
Verify.notNull(ir, "ir");
Verify.notNull(outputManager, "outputManager");
this.ir = ir;
this.outputManager = outputManager;
}
/**
* Generate the composites for dealing with the message header.
*
* @throws IOException if an error is encountered when writing the output.
*/
public void generateMessageHeaderStub() throws IOException
{
generateComposite(ir.namespaces(), ir.headerStructure().tokens());
}
List generateTypeStubs(final CharSequence[] scope) throws IOException
{
final List typesToInclude = new ArrayList<>();
for (final List tokens : ir.types())
{
switch (tokens.get(0).signal())
{
case BEGIN_ENUM:
generateEnum(scope, tokens);
break;
case BEGIN_SET:
generateChoiceSet(scope, tokens);
break;
case BEGIN_COMPOSITE:
generateComposite(scope, tokens);
break;
default:
break;
}
typesToInclude.add(tokens.get(0).applicableTypeName());
}
return typesToInclude;
}
List generateTypesToIncludes(final List tokens)
{
final List typesToInclude = new ArrayList<>();
for (final Token token : tokens)
{
switch (token.signal())
{
case BEGIN_ENUM:
case BEGIN_SET:
case BEGIN_COMPOSITE:
typesToInclude.add(token.applicableTypeName());
break;
default:
break;
}
}
return typesToInclude;
}
/**
* {@inheritDoc}
*/
public void generate() throws IOException
{
generateMessageHeaderStub();
final List typesToInclude = generateTypeStubs(ir.namespaces());
for (final List tokens : ir.messages())
{
final Token msgToken = tokens.get(0);
try (Writer out = outputManager.createOutput(formatName(msgToken.name())))
{
final String structName = formatScopedName(ir.namespaces(), msgToken.name());
out.append(generateFileHeader(structName, typesToInclude));
final List messageBody = tokens.subList(1, tokens.size() - 1);
int i = 0;
final List fields = new ArrayList<>();
i = collectFields(messageBody, i, fields);
final List groups = new ArrayList<>();
i = collectGroups(messageBody, i, groups);
final List varData = new ArrayList<>();
collectVarData(messageBody, i, varData);
out.append(generateMessageFlyweightStruct(structName));
out.append(String.format("\n" +
"enum %1$s_meta_attribute\n" +
"{\n" +
" %1$s_meta_attribute_EPOCH,\n" +
" %1$s_meta_attribute_TIME_UNIT,\n" +
" %1$s_meta_attribute_SEMANTIC_TYPE,\n" +
" %1$s_meta_attribute_PRESENCE\n" +
"};\n\n" +
"union %1$s_float_as_uint\n" +
"{\n" +
" float fp_value;\n" +
" uint32_t uint_value;\n" +
"};\n\n" +
"union %1$s_double_as_uint\n" +
"{\n" +
" double fp_value;\n" +
" uint64_t uint_value;\n" +
"};\n\n" +
"struct %1$s_string_view\n" +
"{\n" +
" const char* data;\n" +
" size_t length;\n" +
"};\n",
structName));
out.append(generateMessageFlyweightFunctions(structName, msgToken, ir.namespaces()));
out.append(generateFieldFunctions(ir.namespaces(), structName, structName, fields));
final StringBuilder sb = new StringBuilder();
generateGroups(sb, ir.namespaces(), groups, structName, structName);
out.append(sb);
out.append(generateVarData(structName, structName, varData));
out.append("\n#endif\n");
}
}
}
private void generateGroups(
final StringBuilder sb,
final CharSequence[] scope,
final List tokens,
final String outerStruct,
final String outermostStruct)
{
for (int i = 0, size = tokens.size(); i < size; ++i)
{
final Token groupToken = tokens.get(i);
if (groupToken.signal() != Signal.BEGIN_GROUP)
{
throw new IllegalStateException("tokens must begin with BEGIN_GROUP: token=" + groupToken);
}
final String groupName = outerStruct + '_' + formatName(groupToken.name());
final Token numInGroupToken = Generators.findFirst("numInGroup", tokens, i);
final String cTypeForNumInGroup = cTypeName(numInGroupToken.encoding().primitiveType());
generateGroupStruct(sb, groupName);
generateGroupHeaderFunctions(sb, scope, groupName, tokens, i);
++i;
final int groupHeaderTokenCount = tokens.get(i).componentTokenCount();
i += groupHeaderTokenCount;
final List fields = new ArrayList<>();
i = collectFields(tokens, i, fields);
sb.append(generateFieldFunctions(scope, groupName, outermostStruct, fields));
final List groups = new ArrayList<>();
i = collectGroups(tokens, i, groups);
generateGroups(sb, scope, groups, groupName, outermostStruct);
final List varData = new ArrayList<>();
i = collectVarData(tokens, i, varData);
sb.append(generateVarData(groupName, outermostStruct, varData));
sb.append(generateGroupPropertyFunctions(outerStruct, groupName, groupToken, cTypeForNumInGroup));
}
}
private static void generateGroupStruct(final StringBuilder sb, final String groupName)
{
sb.append(String.format("\n" +
"struct %s\n" +
"{\n" +
" char *buffer;\n" +
" uint64_t buffer_length;\n" +
" uint64_t *position_ptr;\n" +
" uint64_t block_length;\n" +
" uint64_t count;\n" +
" uint64_t index;\n" +
" uint64_t offset;\n" +
" uint64_t acting_version;\n" +
"};\n",
groupName));
}
private static void generateGroupHeaderFunctions(
final StringBuilder sb,
final CharSequence[] scope,
final String groupName,
final List tokens,
final int index)
{
final String dimensionsStructName = formatScopedName(scope, tokens.get(index + 1).name());
final int dimensionHeaderLength = tokens.get(index + 1).encodedLength();
final int blockLength = tokens.get(index).encodedLength();
final Token blockLengthToken = Generators.findFirst("blockLength", tokens, index);
final Token numInGroupToken = Generators.findFirst("numInGroup", tokens, index);
final String cTypeForBlockLength = cTypeName(blockLengthToken.encoding().primitiveType());
final String cTypeForNumInGroup = cTypeName(numInGroupToken.encoding().primitiveType());
sb.append(String.format("\n" +
"SBE_ONE_DEF uint64_t *%1$s_sbe_position_ptr(\n" +
" struct %1$s *const codec)\n" +
"{\n" +
" return codec->position_ptr;\n" +
"}\n\n" +
"SBE_ONE_DEF struct %1$s *%1$s_wrap_for_decode(\n" +
" struct %1$s *const codec,\n" +
" char *const buffer,\n" +
" uint64_t *const pos,\n" +
" const uint64_t acting_version,\n" +
" const uint64_t buffer_length)\n" +
"{\n" +
" codec->buffer = buffer;\n" +
" codec->buffer_length = buffer_length;\n" +
" struct %2$s dimensions;\n" +
" if (!%2$s_wrap(&dimensions, codec->buffer, *pos, acting_version, buffer_length))\n" +
" {\n" +
" return NULL;\n" +
" }\n\n" +
" codec->block_length = %2$s_blockLength(&dimensions);\n" +
" codec->count = %2$s_numInGroup(&dimensions);\n" +
" codec->index = -1;\n" +
" codec->acting_version = acting_version;\n" +
" codec->position_ptr = pos;\n" +
" *codec->position_ptr = *codec->position_ptr + %3$d;\n\n" +
" return codec;\n" +
"}\n",
groupName, dimensionsStructName, dimensionHeaderLength));
final long minCount = numInGroupToken.encoding().applicableMinValue().longValue();
final String minCheck = minCount > 0 ? "count < " + minCount + " || " : "";
sb.append(String.format("\n" +
"SBE_ONE_DEF struct %1$s *%1$s_wrap_for_encode(\n" +
" struct %1$s *const codec,\n" +
" char *const buffer,\n" +
" const %4$s count,\n" +
" uint64_t *const pos,\n" +
" const uint64_t acting_version,\n" +
" const uint64_t buffer_length)\n" +
"{\n" +
"#if defined(__GNUG__) && !defined(__clang__)\n" +
"#pragma GCC diagnostic push\n" +
"#pragma GCC diagnostic ignored \"-Wtype-limits\"\n" +
"#endif\n" +
" if (%7$scount > %8$d)\n" +
" {\n" +
" errno = E110;\n" +
" return NULL;\n" +
" }\n" +
"#if defined(__GNUG__) && !defined(__clang__)\n" +
"#pragma GCC diagnostic pop\n" +
"#endif\n" +
" codec->buffer = buffer;\n" +
" codec->buffer_length = buffer_length;\n" +
" struct %5$s dimensions;\n" +
" if (!%5$s_wrap(&dimensions, codec->buffer, *pos, acting_version, buffer_length))\n" +
" {\n" +
" return NULL;\n" +
" }\n\n" +
" %5$s_set_blockLength(&dimensions, (%2$s)%3$d);\n" +
" %5$s_set_numInGroup(&dimensions, (%4$s)count);\n" +
" codec->index = -1;\n" +
" codec->count = count;\n" +
" codec->block_length = %3$d;\n" +
" codec->acting_version = acting_version;\n" +
" codec->position_ptr = pos;\n" +
" *codec->position_ptr = *codec->position_ptr + %6$d;\n\n" +
" return codec;\n" +
"}\n",
groupName, cTypeForBlockLength, blockLength, cTypeForNumInGroup,
dimensionsStructName, dimensionHeaderLength,
minCheck,
numInGroupToken.encoding().applicableMaxValue().longValue()));
sb.append(String.format("\n" +
"SBE_ONE_DEF uint64_t %3$s_sbe_header_size(void)\n" +
"{\n" +
" return %1$d;\n" +
"}\n\n" +
"SBE_ONE_DEF uint64_t %3$s_sbe_block_length(void)\n" +
"{\n" +
" return %2$d;\n" +
"}\n\n" +
"SBE_ONE_DEF uint64_t %3$s_sbe_position(\n" +
" const struct %3$s *const codec)\n" +
"{\n" +
"#if defined(__GNUG__) && !defined(__clang__)\n" +
"#pragma GCC diagnostic push\n" +
"#pragma GCC diagnostic ignored \"-Wmaybe-uninitialized\"\n" +
"#endif\n" +
" return *codec->position_ptr;\n" +
"#if defined(__GNUG__) && !defined(__clang__)\n" +
"#pragma GCC diagnostic pop\n" +
"#endif\n" +
"}\n\n" +
"SBE_ONE_DEF bool %3$s_set_sbe_position(\n" +
" struct %3$s *const codec,\n" +
" const uint64_t position)\n" +
"{\n" +
" if (SBE_BOUNDS_CHECK_EXPECT((position > codec->buffer_length), false))\n" +
" {\n" +
" errno = E100;\n" +
" return false;\n" +
" }\n" +
" *codec->position_ptr = position;\n\n" +
" return true;\n" +
"}\n\n" +
"SBE_ONE_DEF uint64_t %3$s_count(\n" +
" const struct %3$s *const codec)\n" +
"{\n" +
" return codec->count;\n" +
"}\n\n" +
"SBE_ONE_DEF bool %3$s_has_next(\n" +
" const struct %3$s *const codec)\n" +
"{\n" +
"#if defined(__GNUG__) && !defined(__clang__)\n" +
"#pragma GCC diagnostic push\n" +
"#pragma GCC diagnostic ignored \"-Wmaybe-uninitialized\"\n" +
"#endif\n" +
" return codec->index + 1 < codec->count;\n" +
"#if defined(__GNUG__) && !defined(__clang__)\n" +
"#pragma GCC diagnostic pop\n" +
"#endif\n" +
"}\n\n" +
"SBE_ONE_DEF struct %3$s *%3$s_next(\n" +
" struct %3$s *const codec)\n" +
"{\n" +
" codec->offset = *codec->position_ptr;\n" +
"#if defined(__GNUG__) && !defined(__clang__)\n" +
"#pragma GCC diagnostic push\n" +
"#pragma GCC diagnostic ignored \"-Wmaybe-uninitialized\"\n" +
"#endif\n" +
" if (SBE_BOUNDS_CHECK_EXPECT(((codec->offset + codec->block_length) " +
"> codec->buffer_length), false))\n" +
"#if defined(__GNUG__) && !defined(__clang__)\n" +
"#pragma GCC diagnostic pop\n" +
"#endif\n" +
" {\n" +
" errno = E108;\n" +
" return NULL;\n" +
" }\n" +
" *codec->position_ptr = codec->offset + codec->block_length;\n" +
" ++codec->index;\n\n" +
" return codec;\n" +
"}\n\n" +
"SBE_ONE_DEF struct %3$s *%3$s_for_each(\n" +
" struct %3$s *const codec,\n" +
" void (*func)(struct %3$s *, void *),\n" +
" void *const context)\n" +
"{\n" +
" while (%3$s_has_next(codec))\n" +
" {\n" +
" if (!%3$s_next(codec))\n" +
" {\n" +
" return NULL;\n" +
" }\n" +
" func(codec, context);\n" +
" }\n\n" +
" return codec;\n" +
"}\n",
dimensionHeaderLength, blockLength, groupName));
}
private static CharSequence generateGroupPropertyFunctions(
final String outerStruct, final String groupName, final Token token, final String cTypeForNumInGroup)
{
final StringBuilder sb = new StringBuilder();
final String propertyName = formatPropertyName(token.name());
sb.append(String.format("\n" +
"SBE_ONE_DEF uint16_t %1$s_id(void)\n" +
"{\n" +
" return %2$d;\n" +
"}\n",
groupName,
token.id()));
sb.append(String.format("\n" +
"SBE_ONE_DEF struct %2$s *%1$s_get_%3$s(\n" +
" struct %1$s *const codec,\n" +
" struct %2$s *const property)\n" +
"{\n" +
" return %2$s_wrap_for_decode(\n" +
" property,\n" +
" codec->buffer,\n" +
" %1$s_sbe_position_ptr(codec),\n" +
" codec->acting_version,\n" +
" codec->buffer_length);\n" +
"}\n",
outerStruct,
groupName,
propertyName));
sb.append(String.format("\n" +
"SBE_ONE_DEF struct %2$s *%2$s_set_count(\n" +
" struct %1$s *const codec,\n" +
" struct %2$s *const property,\n" +
" const %3$s count)\n" +
"{\n" +
" return %2$s_wrap_for_encode(\n" +
" property,\n" +
" codec->buffer,\n" +
" count,\n" +
" %1$s_sbe_position_ptr(codec),\n" +
" codec->acting_version,\n" +
" codec->buffer_length);\n" +
"}\n",
outerStruct,
groupName,
cTypeForNumInGroup));
sb.append(String.format("\n" +
"SBE_ONE_DEF uint64_t %2$s_since_version(void)\n" +
"{\n" +
" return %3$d;\n" +
"}\n\n" +
"SBE_ONE_DEF bool %2$s_in_acting_version(\n" +
" const struct %1$s *const codec)\n" +
"{\n" +
"#if defined(__clang__)\n" +
"#pragma clang diagnostic push\n" +
"#pragma clang diagnostic ignored \"-Wtautological-compare\"\n" +
"#endif\n" +
" return codec->acting_version >= %2$s_since_version();\n" +
"#if defined(__clang__)\n" +
"#pragma clang diagnostic pop\n" +
"#endif\n" +
"}\n",
outerStruct,
groupName,
token.version()));
return sb;
}
private CharSequence generateVarData(
final String structName, final String outermostStruct, final List tokens)
{
final StringBuilder sb = new StringBuilder();
for (int i = 0, size = tokens.size(); i < size;)
{
final Token token = tokens.get(i);
if (token.signal() != Signal.BEGIN_VAR_DATA)
{
throw new IllegalStateException("tokens must begin with BEGIN_VAR_DATA: token=" + token);
}
final String propertyName = formatPropertyName(token.name());
final Token lengthToken = Generators.findFirst("length", tokens, i);
final Token varDataToken = Generators.findFirst("varData", tokens, i);
final String characterEncoding = varDataToken.encoding().characterEncoding();
final int lengthOfLengthField = lengthToken.encodedLength();
final String lengthCType = cTypeName(lengthToken.encoding().primitiveType());
final String lengthByteOrderStr = formatByteOrderEncoding(
lengthToken.encoding().byteOrder(), lengthToken.encoding().primitiveType());
generateFieldMetaAttributeFunction(sb, token, structName, outermostStruct);
generateVarDataDescriptors(
sb, token, propertyName, characterEncoding, lengthToken,
lengthOfLengthField, lengthCType, structName);
sb.append(String.format("\n" +
"SBE_ONE_DEF const char *%6$s_%1$s(\n" +
" struct %6$s *const codec)\n" +
"{\n" +
"%2$s" +
" %4$s length_field_value;\n" +
" memcpy(&length_field_value, codec->buffer + %6$s_sbe_position(codec), sizeof(%4$s));\n" +
" const char *field_ptr = (codec->buffer + %6$s_sbe_position(codec) + %3$d);\n\n" +
" if (!%6$s_set_sbe_position(\n" +
" codec, %6$s_sbe_position(codec) + %3$d + %5$s(length_field_value)))\n" +
" {\n" +
" return NULL;\n" +
" }\n\n" +
" return field_ptr;\n" +
"}\n",
propertyName,
generateTypeFieldNotPresentCondition(token.version()),
lengthOfLengthField,
lengthCType,
lengthByteOrderStr,
structName));
sb.append(String.format("\n" +
"SBE_ONE_DEF uint64_t %6$s_get_%1$s(\n" +
" struct %6$s *const codec,\n" +
" char *dst,\n" +
" const uint64_t length)\n" +
"{\n" +
"%2$s" +
" uint64_t length_of_length_field = %3$d;\n" +
" uint64_t length_position = %6$s_sbe_position(codec);\n" +
" if (!%6$s_set_sbe_position(codec, length_position + length_of_length_field))\n" +
" {\n" +
" return 0;\n" +
" }\n\n" +
" %5$s length_field_value;\n" +
" memcpy(&length_field_value, codec->buffer + length_position, sizeof(%5$s));\n" +
" uint64_t data_length = %4$s(length_field_value);\n" +
" uint64_t bytes_to_copy = length < data_length ? length : data_length;\n" +
" uint64_t pos = %6$s_sbe_position(codec);\n\n" +
" if (!%6$s_set_sbe_position(codec, pos + data_length))\n" +
" {\n" +
" return 0;\n" +
" }\n\n" +
" memcpy(dst, codec->buffer + pos, bytes_to_copy);\n\n" +
" return bytes_to_copy;\n" +
"}\n",
propertyName,
generateArrayFieldNotPresentCondition(token.version()),
lengthOfLengthField,
lengthByteOrderStr,
lengthCType,
structName));
sb.append(String.format("\n" +
"SBE_ONE_DEF struct %6$s_string_view %5$s_get_%1$s_as_string_view(\n" +
" struct %5$s *const codec)\n" +
"{\n" +
"%2$s" +
" %4$s length_field_value = %5$s_%1$s_length(codec);\n" +
" const char *field_ptr = codec->buffer + %5$s_sbe_position(codec) + %3$d;\n" +
" if (!%5$s_set_sbe_position(\n" +
" codec, %5$s_sbe_position(codec) + %3$d + length_field_value))\n" +
" {\n" +
" struct %6$s_string_view ret = {NULL, 0};\n" +
" return ret;\n" +
" }\n\n" +
" struct %6$s_string_view ret = {field_ptr, length_field_value};\n\n" +
" return ret;\n" +
"}\n",
propertyName,
generateStringViewNotPresentCondition(token.version(), outermostStruct),
lengthOfLengthField,
lengthCType,
structName,
outermostStruct));
sb.append(String.format("\n" +
"SBE_ONE_DEF struct %5$s *%5$s_put_%1$s(\n" +
" struct %5$s *const codec,\n" +
" const char *src,\n" +
" const %3$s length)\n" +
"{\n" +
" uint64_t length_of_length_field = %2$d;\n" +
" uint64_t length_position = %5$s_sbe_position(codec);\n" +
" %3$s length_field_value = %4$s(length);\n" +
" if (!%5$s_set_sbe_position(codec, length_position + length_of_length_field))\n" +
" {\n" +
" return NULL;\n" +
" }\n\n" +
" memcpy(codec->buffer + length_position, &length_field_value, sizeof(%3$s));\n" +
" uint64_t pos = %5$s_sbe_position(codec);\n\n" +
" if (!%5$s_set_sbe_position(codec, pos + length))\n" +
" {\n" +
" return NULL;\n" +
" }\n\n" +
" memcpy(codec->buffer + pos, src, length);\n\n" +
" return codec;\n" +
"}\n",
propertyName,
lengthOfLengthField,
lengthCType,
lengthByteOrderStr,
structName));
i += token.componentTokenCount();
}
return sb;
}
private void generateVarDataDescriptors(
final StringBuilder sb,
final Token token,
final String propertyName,
final String characterEncoding,
final Token lengthToken,
final Integer sizeOfLengthField,
final String lengthCType,
final String structName)
{
final String fullyQualifiedPropertyName = structName + "_" + propertyName;
sb.append(String.format("\n" +
"SBE_ONE_DEF const char *%s_character_encoding(void)\n" +
"{\n" +
" return \"%s\";\n" +
"}\n",
fullyQualifiedPropertyName,
characterEncoding));
sb.append(String.format("\n" +
"SBE_ONE_DEF uint64_t %1$s_since_version(void)\n" +
"{\n" +
" return %2$d;\n" +
"}\n\n" +
"SBE_ONE_DEF bool %1$s_in_acting_version(\n" +
" const struct %4$s *const codec)\n" +
"{\n" +
"#if defined(__clang__)\n" +
"#pragma clang diagnostic push\n" +
"#pragma clang diagnostic ignored \"-Wtautological-compare\"\n" +
"#endif\n" +
" return codec->acting_version >= %1$s_since_version();\n" +
"#if defined(__clang__)\n" +
"#pragma clang diagnostic pop\n" +
"#endif\n" +
"}\n\n" +
"SBE_ONE_DEF uint16_t %1$s_id(void)\n" +
"{\n" +
" return %3$d;\n" +
"}\n",
fullyQualifiedPropertyName,
token.version(),
token.id(),
structName));
sb.append(String.format("\n" +
"SBE_ONE_DEF uint64_t %s_header_length(void)\n" +
"{\n" +
" return %d;\n" +
"}\n",
fullyQualifiedPropertyName,
sizeOfLengthField));
sb.append(String.format("\n" +
"SBE_ONE_DEF %4$s %1$s_length(\n" +
" const struct %5$s *const codec)\n" +
"{\n" +
"%2$s" +
" %4$s length;\n" +
" memcpy(&length, codec->buffer + %5$s_sbe_position(codec), sizeof(%4$s));\n\n" +
" return %3$s(length);\n" +
"}\n",
fullyQualifiedPropertyName,
generateArrayFieldNotPresentCondition(token.version()),
formatByteOrderEncoding(lengthToken.encoding().byteOrder(), lengthToken.encoding().primitiveType()),
lengthCType,
structName));
}
private void generateChoiceSet(final CharSequence[] scope, final List tokens) throws IOException
{
final Token bitsetToken = tokens.get(0);
try (Writer out = outputManager.createOutput(formatName(bitsetToken.applicableTypeName())))
{
final String bitSetName = formatScopedName(scope, bitsetToken.applicableTypeName());
out.append(generateFileHeader(bitSetName, null));
out.append(generateFixedFlyweightStruct(bitSetName));
out.append(generateFixedFlyweightCodeFunctions(bitSetName, bitsetToken.encodedLength()));
out.append(String.format("\n" +
"SBE_ONE_DEF struct %1$s *%1$s_clear(\n" +
" struct %1$s *const codec)\n" +
"{\n" +
" %2$s zero = 0;\n" +
" memcpy(codec->buffer + codec->offset, &zero, sizeof(%2$s));\n\n" +
" return codec;\n" +
"}\n",
bitSetName,
cTypeName(bitsetToken.encoding().primitiveType())));
out.append(String.format("\n" +
"SBE_ONE_DEF bool %1$s_is_empty(\n" +
" const struct %1$s *const codec)\n" +
"{\n" +
" %2$s val;\n" +
" memcpy(&val, codec->buffer + codec->offset, sizeof(%2$s));\n\n" +
" return 0 == val;\n" +
"}\n",
bitSetName,
cTypeName(bitsetToken.encoding().primitiveType())));
out.append(generateChoices(bitSetName, tokens.subList(1, tokens.size() - 1)));
out.append("\n#endif\n");
}
}
private void generateEnum(final CharSequence[] scope, final List tokens) throws IOException
{
final Token enumToken = tokens.get(0);
try (Writer out = outputManager.createOutput(formatName(enumToken.applicableTypeName())))
{
final String enumName = formatScopedName(scope, enumToken.applicableTypeName());
out.append(generateFileHeader(enumName, null));
out.append(generateEnumValues(scope, tokens.subList(1, tokens.size() - 1), enumToken));
out.append(generateEnumLookupFunction(scope, tokens.subList(1, tokens.size() - 1), enumToken));
out.append("\n#endif\n");
}
}
private void generateComposite(final CharSequence[] scope, final List tokens) throws IOException
{
final Token compositeToken = tokens.get(0);
try (Writer out = outputManager.createOutput(formatName(compositeToken.applicableTypeName())))
{
final String compositeName = formatScopedName(scope, compositeToken.applicableTypeName());
out.append(generateFileHeader(
compositeName, generateTypesToIncludes(tokens.subList(1, tokens.size() - 1))));
out.append(generateFixedFlyweightStruct(compositeName));
out.append(String.format("\n" +
"enum %1$s_meta_attribute\n" +
"{\n" +
" %1$s_meta_attribute_EPOCH,\n" +
" %1$s_meta_attribute_TIME_UNIT,\n" +
" %1$s_meta_attribute_SEMANTIC_TYPE,\n" +
" %1$s_meta_attribute_PRESENCE\n" +
"};\n\n" +
"union %1$s_float_as_uint\n" +
"{\n" +
" float fp_value;\n" +
" uint32_t uint_value;\n" +
"};\n\n" +
"union %1$s_double_as_uint\n" +
"{\n" +
" double fp_value;\n" +
" uint64_t uint_value;\n" +
"};\n\n" +
"struct %1$s_string_view\n" +
"{\n" +
" const char* data;\n" +
" size_t length;\n" +
"};\n",
compositeName));
out.append(generateFixedFlyweightCodeFunctions(compositeName, compositeToken.encodedLength()));
out.append(generateCompositePropertyFunctions(
scope, compositeName, tokens.subList(1, tokens.size() - 1)));
out.append("\n#endif\n");
}
}
private static CharSequence generateChoiceNotPresentCondition(final int sinceVersion)
{
if (0 == sinceVersion)
{
return "";
}
return String.format(
"if (codec->acting_version < %1$d)\n" +
"{\n" +
" return false;\n" +
"}\n\n",
sinceVersion);
}
private CharSequence generateChoices(final String bitsetStructName, final List tokens)
{
final StringBuilder sb = new StringBuilder();
tokens
.stream()
.filter((token) -> token.signal() == Signal.CHOICE)
.forEach((token) ->
{
final String choiceName = formatPropertyName(token.name());
final String typeName = cTypeName(token.encoding().primitiveType());
final String choiceBitPosition = token.encoding().constValue().toString();
final String byteOrderStr = formatByteOrderEncoding(
token.encoding().byteOrder(), token.encoding().primitiveType());
sb.append(String.format("\n" +
"SBE_ONE_DEF bool %1$s_check_%2$s_bit(\n" +
" const %3$s bits)\n" +
"{\n" +
" return (bits & ((%3$s)1 << %4$s)) != 0;\n" +
"}\n",
bitsetStructName,
choiceName,
typeName,
choiceBitPosition));
sb.append(String.format("\n" +
"SBE_ONE_DEF %3$s %1$s_apply_%2$s_bit(\n" +
" const %3$s bits,\n" +
" const bool value)\n" +
"{\n" +
" return value ?" +
" (bits | ((%3$s)1 << %4$s)) : (bits & ~((%3$s)1 << %4$s));\n" +
"}\n",
bitsetStructName,
choiceName,
typeName,
choiceBitPosition));
sb.append(String.format("\n" +
"SBE_ONE_DEF bool %1$s_%2$s(\n" +
" const struct %1$s *const codec)\n" +
"{\n" +
"%3$s" +
" %5$s val;\n" +
" memcpy(&val, codec->buffer + codec->offset, sizeof(%5$s));\n\n" +
" return (%4$s(val) & ((%5$s)1 << %6$s)) != 0;\n" +
"}\n",
bitsetStructName,
choiceName,
generateChoiceNotPresentCondition(token.version()),
byteOrderStr,
typeName,
choiceBitPosition));
sb.append(String.format("\n" +
"SBE_ONE_DEF struct %1$s *%1$s_set_%2$s(\n" +
" struct %1$s *const codec,\n" +
" const bool value)\n" +
"{\n" +
" %3$s bits;\n" +
" memcpy(&bits, codec->buffer + codec->offset, sizeof(%3$s));\n" +
" bits = %4$s(value ? " +
"(%4$s(bits) | ((%3$s)1 << %5$s)) : (%4$s(bits) & ~((%3$s)1 << %5$s)));\n" +
" memcpy(codec->buffer + codec->offset, &bits, sizeof(%3$s));\n\n" +
" return codec;\n" +
"}\n",
bitsetStructName,
choiceName,
typeName,
byteOrderStr,
choiceBitPosition));
});
return sb;
}
private CharSequence generateEnumValues(
final CharSequence[] scope, final List tokens, final Token encodingToken)
{
final StringBuilder sb = new StringBuilder();
final Encoding encoding = encodingToken.encoding();
final String enumName = formatScopedName(scope, encodingToken.applicableTypeName());
sb.append(String.format("\n" +
"enum %1$s\n" +
"{\n",
enumName));
for (final Token token : tokens)
{
final CharSequence constVal = generateLiteral(
token.encoding().primitiveType(), token.encoding().constValue().toString());
sb.append(String.format(
" %s_%s = %s,\n",
enumName,
token.name(),
constVal));
}
sb.append(String.format(
" %s_NULL_VALUE = %s\n",
enumName,
generateLiteral(encoding.primitiveType(), encoding.applicableNullValue().toString())));
sb.append("};\n\n");
return sb;
}
private static CharSequence generateEnumLookupFunction(
final CharSequence[] scope, final List tokens, final Token encodingToken)
{
final String enumName = formatScopedName(scope, encodingToken.applicableTypeName());
final StringBuilder sb = new StringBuilder();
sb.append(String.format(
"SBE_ONE_DEF bool %1$s_get(\n" +
" const %2$s value,\n" +
" enum %1$s *const out)\n" +
"{\n" +
" switch (value)\n" +
" {\n",
enumName,
cTypeName(tokens.get(0).encoding().primitiveType())));
for (final Token token : tokens)
{
final CharSequence constVal = generateLiteral(
token.encoding().primitiveType(), token.encoding().constValue().toString());
sb.append(String.format(
" case %s:\n" +
" *out = %s_%s;\n" +
" return true;\n",
constVal,
enumName,
token.name()));
}
final CharSequence constVal = generateLiteral(
encodingToken.encoding().primitiveType(), encodingToken.encoding().applicableNullValue().toString());
sb.append(String.format(
" case %s:\n" +
" *out = %s_NULL_VALUE;\n" +
" return true;\n" +
" }\n\n" +
" errno = E103;\n" +
" return false;\n" +
"}\n",
constVal,
enumName));
return sb;
}
private CharSequence generateFieldNotPresentCondition(final int sinceVersion, final Encoding encoding)
{
if (0 == sinceVersion)
{
return "";
}
return String.format(
" if (codec->acting_version < %1$d)\n" +
" {\n" +
" return %2$s;\n" +
" }\n\n",
sinceVersion,
generateLiteral(encoding.primitiveType(), encoding.applicableNullValue().toString()));
}
private static CharSequence generateArrayFieldNotPresentCondition(final int sinceVersion)
{
if (0 == sinceVersion)
{
return "";
}
return String.format(
" if (codec->acting_version < %1$d)\n" +
" {\n" +
" return 0;\n" +
" }\n\n",
sinceVersion);
}
private static CharSequence generateStringViewNotPresentCondition(
final int sinceVersion,
final String outermostStruct)
{
if (0 == sinceVersion)
{
return "";
}
return String.format(
" if (codec->acting_version < %1$d)\n" +
" {\n" +
" struct %2$s_string_view ret = { NULL, 0 };\n" +
" return ret;\n" +
" }\n\n",
sinceVersion,
outermostStruct);
}
private static CharSequence generateTypeFieldNotPresentCondition(final int sinceVersion)
{
if (0 == sinceVersion)
{
return "";
}
return String.format(
" if (codec->acting_version < %1$d)\n" +
" {\n" +
" return NULL;\n" +
" }\n\n",
sinceVersion);
}
private static CharSequence generateFileHeader(final String structName, final List typesToInclude)
{
final StringBuilder sb = new StringBuilder();
sb.append("/* Generated SBE (Simple Binary Encoding) message codec */\n");
sb.append(String.format("\n" +
"#ifndef _%1$s_H_\n" +
"#define _%1$s_H_\n\n" +
"#include \n" +
"#if !defined(__STDC_LIMIT_MACROS)\n" +
"#define __STDC_LIMIT_MACROS 1\n" +
"#endif\n" +
"#include \n" +
"#define SBE_FLOAT_NAN NAN\n" +
"#define SBE_DOUBLE_NAN NAN\n" +
"#include \n" +
"#include \n" +
"#include \n" +
"#include \n",
structName.toUpperCase()));
if (typesToInclude != null && !typesToInclude.isEmpty())
{
sb.append("\n");
for (final String incName : typesToInclude)
{
sb.append(String.format("#include \"%1$s.h\"\n", toLowerFirstChar(incName)));
}
}
sb.append("\n" +
"#ifdef __cplusplus\n" +
"#define SBE_ONE_DEF inline\n" +
"#else\n" +
"#define SBE_ONE_DEF static inline\n" +
"#endif\n\n" +
"/*\n" +
" * Define some byte ordering macros\n" +
" */\n" +
"#if defined(WIN32) || defined(_WIN32)\n" +
" #define SBE_BIG_ENDIAN_ENCODE_16(v) _byteswap_ushort(v)\n" +
" #define SBE_BIG_ENDIAN_ENCODE_32(v) _byteswap_ulong(v)\n" +
" #define SBE_BIG_ENDIAN_ENCODE_64(v) _byteswap_uint64(v)\n" +
" #define SBE_LITTLE_ENDIAN_ENCODE_16(v) (v)\n" +
" #define SBE_LITTLE_ENDIAN_ENCODE_32(v) (v)\n" +
" #define SBE_LITTLE_ENDIAN_ENCODE_64(v) (v)\n" +
"#elif __BYTE_ORDER__ == __ORDER_LITTLE_ENDIAN__\n" +
" #define SBE_BIG_ENDIAN_ENCODE_16(v) __builtin_bswap16(v)\n" +
" #define SBE_BIG_ENDIAN_ENCODE_32(v) __builtin_bswap32(v)\n" +
" #define SBE_BIG_ENDIAN_ENCODE_64(v) __builtin_bswap64(v)\n" +
" #define SBE_LITTLE_ENDIAN_ENCODE_16(v) (v)\n" +
" #define SBE_BIG_ENDIAN_ENCODE_32(v) __builtin_bswap32(v)\n" +
" #define SBE_BIG_ENDIAN_ENCODE_64(v) __builtin_bswap64(v)\n" +
" #define SBE_LITTLE_ENDIAN_ENCODE_16(v) (v)\n" +
" #define SBE_LITTLE_ENDIAN_ENCODE_32(v) (v)\n" +
" #define SBE_LITTLE_ENDIAN_ENCODE_64(v) (v)\n" +
"#elif __BYTE_ORDER__ == __ORDER_BIG_ENDIAN__\n" +
" #define SBE_LITTLE_ENDIAN_ENCODE_16(v) __builtin_bswap16(v)\n" +
" #define SBE_LITTLE_ENDIAN_ENCODE_32(v) __builtin_bswap32(v)\n" +
" #define SBE_LITTLE_ENDIAN_ENCODE_64(v) __builtin_bswap64(v)\n" +
" #define SBE_BIG_ENDIAN_ENCODE_16(v) (v)\n" +
" #define SBE_BIG_ENDIAN_ENCODE_32(v) (v)\n" +
" #define SBE_BIG_ENDIAN_ENCODE_64(v) (v)\n" +
"#else\n" +
" #error \"Byte Ordering of platform not determined." +
" Set __BYTE_ORDER__ manually before including this file.\"\n" +
"#endif\n\n" +
"#if !defined(SBE_BOUNDS_CHECK_EXPECT)\n" +
"# if defined(SBE_NO_BOUNDS_CHECK)\n" +
"# define SBE_BOUNDS_CHECK_EXPECT(exp, c) (false)\n" +
"# elif defined(_MSC_VER)\n" +
"# define SBE_BOUNDS_CHECK_EXPECT(exp, c) (exp)\n" +
"# else \n" +
"# define SBE_BOUNDS_CHECK_EXPECT(exp, c) (__builtin_expect(exp, c))\n" +
"# endif\n\n" +
"#endif\n\n" +
"#define SBE_NULLVALUE_INT8 INT8_MIN\n" +
"#define SBE_NULLVALUE_INT16 INT16_MIN\n" +
"#define SBE_NULLVALUE_INT32 INT32_MIN\n" +
"#define SBE_NULLVALUE_INT64 INT64_MIN\n" +
"#define SBE_NULLVALUE_UINT8 UINT8_MAX\n" +
"#define SBE_NULLVALUE_UINT16 UINT16_MAX\n" +
"#define SBE_NULLVALUE_UINT32 UINT32_MAX\n" +
"#define SBE_NULLVALUE_UINT64 UINT64_MAX\n\n" +
"#define E100 -50100 // E_BUF_SHORT\n" +
"#define E103 -50103 // VAL_UNKNOWN_ENUM\n" +
"#define E104 -50104 // I_OUT_RANGE_NUM\n" +
"#define E105 -50105 // I_OUT_RANGE_NUM\n" +
"#define E106 -50106 // I_OUT_RANGE_NUM\n" +
"#define E107 -50107 // BUF_SHORT_FLYWEIGHT\n" +
"#define E108 -50108 // BUF_SHORT_NXT_GRP_IND\n" +
"#define E109 -50109 // STR_TOO_LONG_FOR_LEN_TYP\n" +
"#define E110 -50110 // CNT_OUT_RANGE\n\n" +
"#ifndef SBE_STRERROR_DEFINED\n" +
"#define SBE_STRERROR_DEFINED\n" +
"SBE_ONE_DEF const char *sbe_strerror(const int errnum)\n" +
"{\n" +
" switch (errnum)\n" +
" {\n" +
" case E100:\n" +
" return \"buffer too short\";\n" +
" case E103:\n" +
" return \"unknown value for enum\";\n" +
" case E104:\n" +
" return \"index out of range\";\n" +
" case E105:\n" +
" return \"index out of range\";\n" +
" case E106:\n" +
" return \"length too large\";\n" +
" case E107:\n" +
" return \"buffer too short for flyweight\";\n" +
" case E108:\n" +
" return \"buffer too short to support next group index\";\n" +
" case E109:\n" +
" return \"std::string too long for length type\";\n" +
" case E110:\n" +
" return \"count outside of allowed range\";\n" +
" default:\n" +
" return \"unknown error\";\n" +
" }\n" +
"}\n" +
"#endif\n");
return sb;
}
private void generatePropertyFunctions(
final StringBuilder sb,
final CharSequence[] scope,
final String containingStructName,
final String outermostStruct,
final Token signalToken,
final String propertyName,
final Token encodingToken)
{
switch (encodingToken.signal())
{
case ENCODING:
generatePrimitiveProperty(
sb,
containingStructName,
outermostStruct,
propertyName,
encodingToken);
break;
case BEGIN_ENUM:
generateEnumProperty(
sb,
scope,
containingStructName,
signalToken,
propertyName,
encodingToken);
break;
case BEGIN_SET:
generateBitsetPropertyFunctions(
sb,
scope,
propertyName,
encodingToken,
containingStructName);
break;
case BEGIN_COMPOSITE:
generateCompositePropertyFunction(
sb,
scope,
propertyName,
encodingToken,
containingStructName);
break;
default:
break;
}
}
private CharSequence generateCompositePropertyFunctions(
final CharSequence[] scope, final String containingStructName, final List tokens)
{
final StringBuilder sb = new StringBuilder();
for (int i = 0; i < tokens.size();)
{
final Token fieldToken = tokens.get(i);
final String propertyName = formatPropertyName(fieldToken.name());
generateFieldMetaAttributeFunction(
sb,
fieldToken,
containingStructName,
containingStructName);
generateFieldCommonFunctions(
sb,
fieldToken,
fieldToken,
propertyName,
containingStructName);
generatePropertyFunctions(
sb,
scope,
containingStructName,
containingStructName,
fieldToken,
propertyName,
fieldToken);
i += tokens.get(i).componentTokenCount();
}
return sb;
}
private void generatePrimitiveProperty(
final StringBuilder sb,
final String containingStructName,
final String outermostStruct,
final String propertyName,
final Token token)
{
sb.append(generatePrimitiveFieldMetaData(propertyName, token, containingStructName));
if (token.isConstantEncoding())
{
sb.append(generateConstPropertyFunctions(propertyName, token, containingStructName));
}
else
{
sb.append(generatePrimitivePropertyFunctions(containingStructName, outermostStruct, propertyName, token));
}
}
private CharSequence generatePrimitivePropertyFunctions(
final String containingStructName, final String outermostStruct, final String propertyName, final Token token)
{
final int arrayLength = token.arrayLength();
if (arrayLength == 1)
{
return generateSingleValueProperty(containingStructName, outermostStruct, propertyName, token);
}
else if (arrayLength > 1)
{
return generateArrayProperty(containingStructName, outermostStruct, propertyName, token);
}
return "";
}
private CharSequence generatePrimitiveFieldMetaData(
final String propertyName, final Token token, final String containingStructName)
{
final StringBuilder sb = new StringBuilder();
final Encoding encoding = token.encoding();
final PrimitiveType primitiveType = encoding.primitiveType();
final String cTypeName = cTypeName(primitiveType);
final CharSequence nullValueString = generateNullValueLiteral(primitiveType, encoding);
sb.append(String.format("\n" +
"SBE_ONE_DEF %1$s %4$s_%2$s_null_value(void)\n" +
"{\n" +
" return %3$s;\n" +
"}\n",
cTypeName,
propertyName,
nullValueString,
containingStructName));
sb.append(String.format("\n" +
"SBE_ONE_DEF %1$s %4$s_%2$s_min_value(void)\n" +
"{\n" +
" return %3$s;\n" +
"}\n",
cTypeName,
propertyName,
generateLiteral(primitiveType, token.encoding().applicableMinValue().toString()),
containingStructName));
sb.append(String.format("\n" +
"SBE_ONE_DEF %1$s %4$s_%2$s_max_value(void)\n" +
"{\n" +
" return %3$s;\n" +
"}\n",
cTypeName,
propertyName,
generateLiteral(primitiveType, token.encoding().applicableMaxValue().toString()),
containingStructName));
sb.append(String.format("\n" +
"SBE_ONE_DEF size_t %3$s_%1$s_encoding_length(void)\n" +
"{\n" +
" return %2$d;\n" +
"}\n",
propertyName,
token.encoding().primitiveType().size() * token.arrayLength(),
containingStructName));
return sb;
}
private CharSequence generateLoadValue(
final String outermostStruct,
final PrimitiveType primitiveType,
final String offsetStr,
final ByteOrder byteOrder,
final String outputHandler)
{
final String cTypeName = cTypeName(primitiveType);
final String byteOrderStr = formatByteOrderEncoding(byteOrder, primitiveType);
final StringBuilder sb = new StringBuilder();
if (primitiveType == PrimitiveType.FLOAT || primitiveType == PrimitiveType.DOUBLE)
{
final String stackUnion = primitiveType == PrimitiveType.FLOAT ? "float" : "double";
sb.append(String.format(
" union %1$s_%2$s_as_uint val;\n" +
" memcpy(&val, codec->buffer + codec->offset + %3$s, sizeof(%4$s));\n" +
" val.uint_value = %5$s(val.uint_value);\n" +
" %6$s val.fp_value;",
outermostStruct,
stackUnion,
offsetStr,
cTypeName,
byteOrderStr,
outputHandler));
}
else
{
sb.append(String.format(
" %1$s val;\n" +
"#if defined(__GNUG__) && !defined(__clang__)\n" +
"#pragma GCC diagnostic push\n" +
"#pragma GCC diagnostic ignored \"-Wmaybe-uninitialized\"\n" +
"#endif\n" +
" memcpy(&val, codec->buffer + codec->offset + %2$s, sizeof(%1$s));\n" +
"#if defined(__GNUG__) && !defined(__clang__)\n" +
"#pragma GCC diagnostic pop\n" +
"#endif\n" +
" %4$s %3$s(val);",
cTypeName,
offsetStr,
byteOrderStr,
outputHandler));
}
return sb;
}
private CharSequence generateLoadValue(
final String outermostStruct,
final PrimitiveType primitiveType,
final String offsetStr,
final ByteOrder byteOrder)
{
return generateLoadValue(outermostStruct, primitiveType, offsetStr, byteOrder, "return");
}
private CharSequence generateLoadValueUnsafe(
final String outermostStruct,
final PrimitiveType primitiveType,
final String offsetStr,
final ByteOrder byteOrder)
{
return generateLoadValue(outermostStruct, primitiveType, offsetStr, byteOrder, "*out =");
}
private CharSequence generateStoreValue(
final String outermostStruct,
final PrimitiveType primitiveType,
final String offsetStr,
final ByteOrder byteOrder)
{
final String cTypeName = cTypeName(primitiveType);
final String byteOrderStr = formatByteOrderEncoding(byteOrder, primitiveType);
final StringBuilder sb = new StringBuilder();
if (primitiveType == PrimitiveType.FLOAT || primitiveType == PrimitiveType.DOUBLE)
{
final String stackUnion = primitiveType == PrimitiveType.FLOAT ? "float" : "double";
sb.append(String.format(
" union %1$s_%2$s_as_uint val;\n" +
" val.fp_value = value;\n" +
" val.uint_value = %3$s(val.uint_value);\n" +
" memcpy(codec->buffer + codec->offset + %4$s, &val, sizeof(%5$s));",
outermostStruct,
stackUnion,
byteOrderStr,
offsetStr,
cTypeName));
}
else
{
sb.append(String.format(
" %1$s val = %2$s(value);\n" +
"#if defined(__GNUG__) && !defined(__clang__)\n" +
"#pragma GCC diagnostic push\n" +
"#pragma GCC diagnostic ignored \"-Wmaybe-uninitialized\"\n" +
"#endif\n" +
" memcpy(codec->buffer + codec->offset + %3$s, &val, sizeof(%1$s));\n" +
"#if defined(__GNUG__) && !defined(__clang__)\n" +
"#pragma GCC diagnostic pop\n" +
"#endif",
cTypeName,
byteOrderStr,
offsetStr));
}
return sb;
}
private CharSequence generateSingleValueProperty(
final String containingStructName, final String outermostStruct, final String propertyName, final Token token)
{
final PrimitiveType primitiveType = token.encoding().primitiveType();
final String cTypeName = cTypeName(primitiveType);
final int offset = token.offset();
final StringBuilder sb = new StringBuilder();
final CharSequence loadValue = generateLoadValue(
outermostStruct,
primitiveType,
Integer.toString(offset),
token.encoding().byteOrder());
sb.append(String.format("\n" +
"SBE_ONE_DEF %1$s %5$s_%2$s(\n" +
" const struct %5$s *const codec)\n" +
"{\n" +
"%3$s" +
"%4$s\n" +
"}\n",
cTypeName,
propertyName,
generateFieldNotPresentCondition(token.version(), token.encoding()),
loadValue,
containingStructName));
final CharSequence storeValue = generateStoreValue(
outermostStruct, primitiveType, Integer.toString(offset), token.encoding().byteOrder());
sb.append(String.format("\n" +
"SBE_ONE_DEF struct %1$s *%1$s_set_%2$s(\n" +
" struct %1$s *const codec,\n" +
" const %3$s value)\n" +
"{\n" +
"%4$s\n" +
" return codec;\n" +
"}\n",
containingStructName,
propertyName,
cTypeName,
storeValue));
return sb;
}
private CharSequence generateArrayProperty(
final String containingStructName, final String outermostStruct, final String propertyName, final Token token)
{
final PrimitiveType primitiveType = token.encoding().primitiveType();
final String cTypeName = cTypeName(primitiveType);
final int offset = token.offset();
final StringBuilder sb = new StringBuilder();
sb.append(String.format("\n" +
"SBE_ONE_DEF uint64_t %1$s_%2$s_length(void)\n" +
"{\n" +
" return %3$d;\n" +
"}\n",
containingStructName,
propertyName,
token.arrayLength()));
sb.append(String.format("\n" +
"SBE_ONE_DEF const char *%1$s_%2$s_buffer(\n" +
" const struct %1$s *const codec)\n" +
"{\n" +
"%3$s" +
" return codec->buffer + codec->offset + %4$d;\n" +
"}\n",
containingStructName,
propertyName,
generateTypeFieldNotPresentCondition(token.version()),
offset));
final CharSequence loadValue = generateLoadValue(
outermostStruct,
primitiveType,
String.format("%d + (index * %d)", offset, primitiveType.size()),
token.encoding().byteOrder());
sb.append(String.format("\n" +
"SBE_ONE_DEF %2$s %1$s_%3$s_unsafe(\n" +
" const struct %1$s *const codec,\n" +
" const uint64_t index)\n" +
"{\n" +
"%4$s" +
"%5$s\n" +
"}\n",
containingStructName,
cTypeName,
propertyName,
generateFieldNotPresentCondition(token.version(), token.encoding()),
loadValue));
final CharSequence loadValueUnsafe = generateLoadValueUnsafe(
outermostStruct,
primitiveType,
String.format("%d + (index * %d)", offset, primitiveType.size()),
token.encoding().byteOrder());
sb.append(String.format("\n" +
"SBE_ONE_DEF bool %1$s_%3$s(\n" +
" const struct %1$s *const codec,\n" +
" const uint64_t index,\n" +
" %2$s *const out)\n" +
"{\n" +
" if (index >= %4$d)\n" +
" {\n" +
" errno = E104;\n" +
" return false;\n" +
" }\n\n" +
"%5$s" +
"%6$s\n" +
" return true;\n" +
"}\n",
containingStructName,
cTypeName,
propertyName,
token.arrayLength(),
generateFieldNotPresentCondition(token.version(), token.encoding()),
loadValueUnsafe));
final CharSequence storeValue = generateStoreValue(
outermostStruct,
primitiveType,
String.format("%d + (index * %d)", offset, primitiveType.size()),
token.encoding().byteOrder());
sb.append(String.format("\n" +
"SBE_ONE_DEF struct %1$s *%1$s_set_%2$s_unsafe(\n" +
" struct %1$s *const codec,\n" +
" const uint64_t index,\n" +
" const %3$s value)\n" +
"{\n" +
"%4$s\n" +
" return codec;\n" +
"}\n",
containingStructName,
propertyName,
cTypeName,
storeValue));
sb.append(String.format("\n" +
"SBE_ONE_DEF struct %1$s *%1$s_set_%2$s(\n" +
" struct %1$s *const codec,\n" +
" const uint64_t index,\n" +
" const %3$s value)\n" +
"{\n" +
" if (index >= %4$d)\n" +
" {\n" +
" errno = E105;\n" +
" return NULL;\n" +
" }\n\n" +
"%5$s\n" +
" return codec;\n" +
"}\n",
containingStructName,
propertyName,
cTypeName,
token.arrayLength(),
storeValue));
sb.append(String.format("\n" +
"SBE_ONE_DEF char *%1$s_get_%2$s(\n" +
" const struct %1$s *const codec,\n" +
" char *dst,\n" +
" const uint64_t length)\n" +
"{\n" +
" if (length > %3$d)\n" +
" {\n" +
" errno = E106;\n" +
" return NULL;\n" +
" }\n\n" +
"%4$s" +
" memcpy(dst, codec->buffer + codec->offset + %5$d, sizeof(%6$s) * length);\n\n" +
" return dst;\n" +
"}\n",
containingStructName,
propertyName,
token.arrayLength(),
generateArrayFieldNotPresentCondition(token.version()),
offset,
cTypeName));
sb.append(String.format("\n" +
"SBE_ONE_DEF struct %1$s *%1$s_put_%2$s(\n" +
" struct %1$s *const codec,\n" +
" const char *src)\n" +
"{\n" +
" memcpy(codec->buffer + codec->offset + %3$d, src, sizeof(%4$s) * %5$d);\n\n" +
" return codec;\n" +
"}\n",
containingStructName,
propertyName,
offset,
cTypeName,
token.arrayLength()));
return sb;
}
private CharSequence generateConstPropertyFunctions(
final String propertyName, final Token token, final String containingStructName)
{
final String cTypeName = cTypeName(token.encoding().primitiveType());
if (token.encoding().primitiveType() != PrimitiveType.CHAR)
{
return String.format("\n" +
"SBE_ONE_DEF %1$s %4$s_%2$s(void)\n" +
"{\n" +
" return %3$s;\n" +
"}\n",
cTypeName,
propertyName,
generateLiteral(token.encoding().primitiveType(), token.encoding().constValue().toString()),
containingStructName);
}
final StringBuilder sb = new StringBuilder();
final byte[] constantValue = token.encoding().constValue().byteArrayValue(token.encoding().primitiveType());
final StringBuilder values = new StringBuilder();
for (final byte b : constantValue)
{
values.append(b).append(", ");
}
if (values.length() > 0)
{
values.setLength(values.length() - 2);
}
sb.append(String.format("\n" +
"SBE_ONE_DEF uint64_t %3$s_%1$s_length(void)\n" +
"{\n" +
" return %2$d;\n" +
"}\n",
propertyName,
constantValue.length,
containingStructName));
sb.append(String.format("\n" +
"SBE_ONE_DEF const char *%3$s_%1$s(void)\n" +
"{\n" +
" static uint8_t %1$s_values[] = {%2$s};\n\n" +
" return (const char *)%1$s_values;\n" +
"}\n",
propertyName,
values,
containingStructName));
sb.append(String.format("\n" +
"SBE_ONE_DEF %1$s %4$s_%2$s_index(const uint64_t index)\n" +
"{\n" +
" static uint8_t %2$s_values[] = {%3$s};\n\n" +
" return %2$s_values[index];\n" +
"}\n",
cTypeName,
propertyName,
values,
containingStructName));
sb.append(String.format("\n" +
"SBE_ONE_DEF uint64_t %4$s_get_%1$s(\n" +
" const struct %4$s *const codec,\n" +
" char *dst,\n" +
" const uint64_t length)\n" +
"{\n" +
" static uint8_t %2$s_values[] = {%3$s};\n" +
" uint64_t bytes_to_copy = length < sizeof(%2$s_values) ? length : sizeof(%2$s_values);\n\n" +
" memcpy(dst, %2$s_values, bytes_to_copy);\n\n" +
" return bytes_to_copy;\n" +
"}\n",
toUpperFirstChar(propertyName),
propertyName,
values,
containingStructName));
return sb;
}
private CharSequence generateFixedFlyweightStruct(final String structName)
{
return String.format("\n" +
"struct %s\n" +
"{\n" +
" char *buffer;\n" +
" uint64_t buffer_length;\n" +
" uint64_t offset;\n" +
" uint64_t acting_version;\n" +
"};\n",
structName);
}
private CharSequence generateFixedFlyweightCodeFunctions(final String structName, final int size)
{
final String schemaIdType = cTypeName(ir.headerStructure().schemaIdType());
final String schemaVersionType = cTypeName(ir.headerStructure().schemaVersionType());
return String.format("\n" +
"SBE_ONE_DEF struct %1$s *%1$s_reset(\n" +
" struct %1$s *const codec,\n" +
" char *buffer,\n" +
" const uint64_t offset,\n" +
" const uint64_t buffer_length,\n" +
" const uint64_t acting_version)\n" +
"{\n" +
" if (SBE_BOUNDS_CHECK_EXPECT(((offset + %2$s) > buffer_length), false))\n" +
" {\n" +
" errno = E107;\n" +
" return NULL;\n" +
" }\n" +
" codec->buffer = buffer;\n" +
" codec->buffer_length = buffer_length;\n" +
" codec->offset = offset;\n" +
" codec->acting_version = acting_version;\n\n" +
" return codec;\n" +
"}\n\n" +
"SBE_ONE_DEF struct %1$s *%1$s_wrap(\n" +
" struct %1$s *const codec,\n" +
" char *buffer,\n" +
" const uint64_t offset,\n" +
" const uint64_t acting_version,\n" +
" const uint64_t buffer_length)\n" +
"{\n" +
" return %1$s_reset(codec, buffer, offset, buffer_length, acting_version);\n" +
"}\n\n" +
"SBE_ONE_DEF uint64_t %1$s_encoded_length(void)\n" +
"{\n" +
" return %2$s;\n" +
"}\n\n" +
"SBE_ONE_DEF uint64_t %1$s_offset(\n" +
" const struct %1$s *const codec)\n" +
"{\n" +
" return codec->offset;\n" +
"}\n\n" +
"SBE_ONE_DEF const char *%1$s_buffer(\n" +
" const struct %1$s *const codec)\n" +
"{\n" +
" return codec->buffer;\n" +
"}\n\n" +
"SBE_ONE_DEF char *%1$s_mut_buffer(\n" +
" struct %1$s *const codec)\n" +
"{\n" +
" return codec->buffer;\n" +
"}\n\n" +
"SBE_ONE_DEF uint64_t %1$s_buffer_length(\n" +
" const struct %1$s *const codec)\n" +
"{\n" +
" return codec->buffer_length;\n" +
"}\n\n" +
"SBE_ONE_DEF %3$s %1$s_sbe_schema_id(void)\n" +
"{\n" +
" return %4$s;\n" +
"}\n\n" +
"SBE_ONE_DEF %5$s %1$s_sbe_schema_version(void)\n" +
"{\n" +
" return %6$s;\n" +
"}\n",
structName,
size,
schemaIdType,
generateLiteral(ir.headerStructure().schemaIdType(), Integer.toString(ir.id())),
schemaVersionType,
generateLiteral(ir.headerStructure().schemaVersionType(), Integer.toString(ir.version())));
}
private CharSequence generateMessageFlyweightStruct(final String structName)
{
return String.format("\n" +
"struct %s\n" +
"{\n" +
" char *buffer;\n" +
" uint64_t buffer_length;\n" +
" uint64_t offset;\n" +
" uint64_t position;\n" +
" uint64_t acting_block_length;\n" +
" uint64_t acting_version;\n" +
"};\n",
structName);
}
private CharSequence generateMessageFlyweightFunctions(
final String structName, final Token token, final CharSequence[] scope)
{
final String blockLengthType = cTypeName(ir.headerStructure().blockLengthType());
final String templateIdType = cTypeName(ir.headerStructure().templateIdType());
final String schemaIdType = cTypeName(ir.headerStructure().schemaIdType());
final String schemaVersionType = cTypeName(ir.headerStructure().schemaVersionType());
final String semanticType = token.encoding().semanticType() == null ? "" : token.encoding().semanticType();
final String messageHeaderStruct = formatScopedName(scope, "messageHeader");
final String semanticVersion = ir.semanticVersion() == null ? "" : ir.semanticVersion();
return String.format("\n" +
"SBE_ONE_DEF uint64_t %10$s_sbe_position(\n" +
" const struct %10$s *const codec)\n" +
"{\n" +
" return codec->position;\n" +
"}\n\n" +
"SBE_ONE_DEF bool %10$s_set_sbe_position(\n" +
" struct %10$s *const codec,\n" +
" const uint64_t position)\n" +
"{\n" +
" if (SBE_BOUNDS_CHECK_EXPECT((position > codec->buffer_length), false))\n" +
" {\n" +
" errno = E100;\n" +
" return false;\n" +
" }\n" +
" codec->position = position;\n\n" +
" return true;\n" +
"}\n\n" +
"SBE_ONE_DEF uint64_t *%10$s_sbe_position_ptr(\n" +
" struct %10$s *const codec)\n" +
"{\n" +
" return &codec->position;\n" +
"}\n\n" +
"SBE_ONE_DEF struct %10$s *%10$s_reset(\n" +
" struct %10$s *const codec,\n" +
" char *buffer,\n" +
" const uint64_t offset,\n" +
" const uint64_t buffer_length,\n" +
" const uint64_t acting_block_length,\n" +
" const uint64_t acting_version)\n" +
"{\n" +
" codec->buffer = buffer;\n" +
" codec->offset = offset;\n" +
" codec->buffer_length = buffer_length;\n" +
" codec->acting_block_length = acting_block_length;\n" +
" codec->acting_version = acting_version;\n" +
" if (!%10$s_set_sbe_position(codec, offset + acting_block_length))\n" +
" {\n" +
" return NULL;\n" +
" }\n\n" +
" return codec;\n" +
"}\n\n" +
"SBE_ONE_DEF struct %10$s *%10$s_copy(\n" +
" struct %10$s *const codec,\n" +
" const struct %10$s *const other)\n" +
"{\n" +
" codec->buffer = other->buffer;\n" +
" codec->offset = other->offset;\n" +
" codec->buffer_length = other->buffer_length;\n" +
" codec->acting_block_length = other->acting_block_length;\n" +
" codec->acting_version = other->acting_version;\n" +
" codec->position = other->position;\n\n" +
" return codec;\n" +
"}\n\n" +
"SBE_ONE_DEF %1$s %10$s_sbe_block_length(void)\n" +
"{\n" +
" return %2$s;\n" +
"}\n\n" +
"#define %13$s_SBE_TEMPLATE_ID %4$s\n\n" +
"SBE_ONE_DEF %3$s %10$s_sbe_template_id(void)\n" +
"{\n" +
" return %4$s;\n" +
"}\n\n" +
"SBE_ONE_DEF %5$s %10$s_sbe_schema_id(void)\n" +
"{\n" +
" return %6$s;\n" +
"}\n\n" +
"SBE_ONE_DEF %7$s %10$s_sbe_schema_version(void)\n" +
"{\n" +
" return %8$s;\n" +
"}\n\n" +
"SBE_ONE_DEF const char* %10$s_sbe_semantic_version(void)\n" +
"{\n" +
" return \"%12$s\";\n" +
"}\n\n" +
"SBE_ONE_DEF const char *%10$s_sbe_semantic_type(void)\n" +
"{\n" +
" return \"%9$s\";\n" +
"}\n\n" +
"SBE_ONE_DEF uint64_t %10$s_offset(\n" +
" const struct %10$s *const codec)\n" +
"{\n" +
" return codec->offset;\n" +
"}\n\n" +
"SBE_ONE_DEF struct %10$s *%10$s_wrap_and_apply_header(\n" +
" struct %10$s *const codec,\n" +
" char *buffer,\n" +
" const uint64_t offset,\n" +
" const uint64_t buffer_length,\n" +
" struct %11$s *const hdr)\n" +
"{\n" +
" %11$s_wrap(\n" +
" hdr, buffer + offset, 0, %11$s_sbe_schema_version(), buffer_length);\n\n" +
" %11$s_set_blockLength(hdr, %10$s_sbe_block_length());\n" +
" %11$s_set_templateId(hdr, %10$s_sbe_template_id());\n" +
" %11$s_set_schemaId(hdr, %10$s_sbe_schema_id());\n" +
" %11$s_set_version(hdr, %10$s_sbe_schema_version());\n\n" +
" %10$s_reset(\n" +
" codec,\n" +
" buffer + offset + %11$s_encoded_length(),\n" +
" 0,\n" +
" buffer_length - %11$s_encoded_length(),\n" +
" %10$s_sbe_block_length(),\n" +
" %10$s_sbe_schema_version());\n\n" +
" return codec;\n" +
"}\n\n" +
"SBE_ONE_DEF struct %10$s *%10$s_wrap_for_encode(\n" +
" struct %10$s *const codec,\n" +
" char *buffer,\n" +
" const uint64_t offset,\n" +
" const uint64_t buffer_length)\n" +
"{\n" +
" return %10$s_reset(\n" +
" codec,\n" +
" buffer,\n" +
" offset,\n" +
" buffer_length,\n" +
" %10$s_sbe_block_length(),\n" +
" %10$s_sbe_schema_version());\n" +
"}\n\n" +
"SBE_ONE_DEF struct %10$s *%10$s_wrap_for_decode(\n" +
" struct %10$s *const codec,\n" +
" char *buffer,\n" +
" const uint64_t offset,\n" +
" const uint64_t acting_block_length,\n" +
" const uint64_t acting_version,\n" +
" const uint64_t buffer_length)\n" +
"{\n" +
" return %10$s_reset(\n" +
" codec,\n" +
" buffer,\n" +
" offset,\n" +
" buffer_length,\n" +
" acting_block_length,\n" +
" acting_version);\n" +
"}\n\n" +
"SBE_ONE_DEF struct %10$s *%10$s_sbe_rewind(\n" +
" struct %10$s *const codec)\n" +
"{\n" +
" return %10$s_wrap_for_decode(\n" +
" codec,\n" +
" codec->buffer,\n" +
" codec->offset,\n" +
" codec->acting_block_length,\n" +
" codec->acting_version,\n" +
" codec->buffer_length);\n" +
"}\n\n" +
"SBE_ONE_DEF uint64_t %10$s_encoded_length(\n" +
" const struct %10$s *const codec)\n" +
"{\n" +
" return %10$s_sbe_position(codec) - codec->offset;\n" +
"}\n\n" +
"SBE_ONE_DEF const char *%10$s_buffer(\n" +
" const struct %10$s *const codec)\n" +
"{\n" +
" return codec->buffer;\n" +
"}\n\n" +
"SBE_ONE_DEF char *%10$s_mut_buffer(\n" +
" struct %10$s *const codec)\n" +
"{\n" +
" return codec->buffer;\n" +
"}\n\n" +
"SBE_ONE_DEF uint64_t %10$s_buffer_length(\n" +
" const struct %10$s *const codec)\n" +
"{\n" +
" return codec->buffer_length;\n" +
"}\n\n" +
"SBE_ONE_DEF uint64_t %10$s_acting_version(\n" +
" const struct %10$s *const codec)\n" +
"{\n" +
" return codec->acting_version;\n" +
"}\n",
blockLengthType,
generateLiteral(ir.headerStructure().blockLengthType(), Integer.toString(token.encodedLength())),
templateIdType,
generateLiteral(ir.headerStructure().templateIdType(), Integer.toString(token.id())),
schemaIdType,
generateLiteral(ir.headerStructure().schemaIdType(), Integer.toString(ir.id())),
schemaVersionType,
generateLiteral(ir.headerStructure().schemaVersionType(), Integer.toString(ir.version())),
semanticType,
structName,
messageHeaderStruct,
semanticVersion,
toUppercaseWithUnderscores(structName));
}
private String toUppercaseWithUnderscores(final String camelCaseString)
{
final StringBuilder sb = new StringBuilder();
for (int i = 0; i < camelCaseString.length(); i++)
{
final char theChar = camelCaseString.charAt(i);
if (Character.isUpperCase(theChar))
{
sb.append("_");
}
sb.append(Character.toUpperCase(theChar));
}
return sb.toString();
}
private CharSequence generateFieldFunctions(
final CharSequence[] scope,
final String containingStructName,
final String outermostStruct,
final List tokens)
{
final StringBuilder sb = new StringBuilder();
for (int i = 0, size = tokens.size(); i < size; i++)
{
final Token signalToken = tokens.get(i);
if (signalToken.signal() == Signal.BEGIN_FIELD)
{
final Token encodingToken = tokens.get(i + 1);
final String propertyName = formatPropertyName(signalToken.name());
generateFieldMetaAttributeFunction(
sb,
signalToken,
containingStructName,
outermostStruct);
generateFieldCommonFunctions(
sb,
signalToken,
encodingToken,
propertyName,
containingStructName);
generatePropertyFunctions(
sb,
scope,
containingStructName,
outermostStruct,
signalToken,
propertyName,
encodingToken);
}
}
return sb;
}
private void generateFieldCommonFunctions(
final StringBuilder sb,
final Token fieldToken,
final Token encodingToken,
final String propertyName,
final String containingStructName)
{
sb.append(String.format("\n" +
"SBE_ONE_DEF uint16_t %3$s_%1$s_id(void)\n" +
"{\n" +
" return %2$d;\n" +
"}\n",
propertyName,
fieldToken.id(),
containingStructName));
sb.append(String.format("\n" +
"SBE_ONE_DEF uint64_t %3$s_%1$s_since_version(void)\n" +
"{\n" +
" return %2$d;\n" +
"}\n\n" +
"SBE_ONE_DEF bool %3$s_%1$s_in_acting_version(\n" +
" const struct %3$s *const codec)\n" +
"{\n" +
"#if defined(__clang__)\n" +
"#pragma clang diagnostic push\n" +
"#pragma clang diagnostic ignored \"-Wtautological-compare\"\n" +
"#endif\n" +
" return codec->acting_version >= %3$s_%1$s_since_version();\n" +
"#if defined(__clang__)\n" +
"#pragma clang diagnostic pop\n" +
"#endif\n" +
"}\n",
propertyName,
fieldToken.version(),
containingStructName));
sb.append(String.format("\n" +
"SBE_ONE_DEF size_t %2$s_%1$s_encoding_offset(void)\n" +
"{\n" +
" return %3$d;\n" +
"}\n",
propertyName,
containingStructName,
encodingToken.offset()));
}
private static void generateFieldMetaAttributeFunction(
final StringBuilder sb, final Token token, final String containingStructName, final String outermostStruct)
{
final Encoding encoding = token.encoding();
final String epoch = encoding.epoch() == null ? "" : encoding.epoch();
final String timeUnit = encoding.timeUnit() == null ? "" : encoding.timeUnit();
final String semanticType = encoding.semanticType() == null ? "" : encoding.semanticType();
sb.append(String.format("\n" +
"SBE_ONE_DEF const char *%6$s_%s_meta_attribute(\n" +
" const enum %7$s_meta_attribute attribute)\n" +
"{\n" +
" switch (attribute)\n" +
" {\n" +
" case %7$s_meta_attribute_EPOCH: return \"%s\";\n" +
" case %7$s_meta_attribute_TIME_UNIT: return \"%s\";\n" +
" case %7$s_meta_attribute_SEMANTIC_TYPE: return \"%s\";\n" +
" case %7$s_meta_attribute_PRESENCE: return \"%s\";\n" +
" }\n\n" +
" return \"\";\n" +
"}\n",
token.name(),
epoch,
timeUnit,
semanticType,
encoding.presence().toString().toLowerCase(),
containingStructName,
outermostStruct));
}
private static CharSequence generateEnumFieldNotPresentCondition(final int sinceVersion)
{
if (0 == sinceVersion)
{
return "";
}
return String.format(
" if (codec->acting_version < %1$d)\n" +
" {\n" +
" return false;\n" +
" }\n\n",
sinceVersion);
}
private static CharSequence generateEnumFieldNotPresentCondition(final int sinceVersion, final String enumName)
{
if (0 == sinceVersion)
{
return "";
}
return String.format(
" if (codec->acting_version < %1$d)\n" +
" {\n" +
" return %2$s_NULL_VALUE;\n" +
" }\n\n",
sinceVersion,
enumName);
}
private void generateEnumProperty(
final StringBuilder sb,
final CharSequence[] scope,
final String containingStructName,
final Token signalToken,
final String propertyName,
final Token token)
{
final String enumName = formatScopedName(scope, token.applicableTypeName());
final String typeName = cTypeName(token.encoding().primitiveType());
final int offset = token.offset();
sb.append(String.format("\n" +
"SBE_ONE_DEF size_t %3$s_%1$s_encoding_length(void)\n" +
"{\n" +
" return %2$d;\n" +
"}\n",
propertyName,
signalToken.encodedLength(),
containingStructName));
if (signalToken.isConstantEncoding())
{
final String constValue = signalToken.encoding().constValue().toString();
sb.append(String.format("\n" +
"SBE_ONE_DEF enum %1$s %4$s_%2$s_const_value(void)\n" +
"{\n" +
" return %1$s_%3$s;\n" +
"}\n",
enumName,
propertyName,
constValue.substring(constValue.indexOf(".") + 1),
containingStructName));
sb.append(String.format("\n" +
"SBE_ONE_DEF enum %1$s %5$s_%2$s(\n" +
" const struct %5$s *const codec)\n" +
"{\n" +
"%3$s" +
" return %1$s_%4$s;\n" +
"}\n",
enumName,
propertyName,
generateEnumFieldNotPresentCondition(token.version(), enumName),
constValue.substring(constValue.indexOf(".") + 1),
containingStructName));
}
else
{
sb.append(String.format("\n" +
"SBE_ONE_DEF bool %7$s_%2$s(\n" +
" const struct %7$s *const codec,\n" +
" enum %1$s *const out)\n" +
"{\n" +
"%3$s" +
" %5$s val;\n" +
" memcpy(&val, codec->buffer + codec->offset + %6$d, sizeof(%5$s));\n\n" +
" return %1$s_get(%4$s(val), out);\n" +
"}\n",
enumName,
propertyName,
generateEnumFieldNotPresentCondition(token.version()),
formatByteOrderEncoding(token.encoding().byteOrder(), token.encoding().primitiveType()),
typeName,
offset,
containingStructName));
sb.append(String.format("\n" +
"SBE_ONE_DEF struct %1$s *%1$s_set_%2$s(\n" +
" struct %1$s *const codec,\n" +
" const enum %3$s value)\n" +
"{\n" +
" %4$s val = %6$s(value);\n" +
" memcpy(codec->buffer + codec->offset + %5$d, &val, sizeof(%4$s));\n\n" +
" return codec;\n" +
"}\n",
containingStructName,
propertyName,
enumName,
typeName,
offset,
formatByteOrderEncoding(token.encoding().byteOrder(), token.encoding().primitiveType())));
}
}
private static void generateBitsetPropertyFunctions(
final StringBuilder sb,
final CharSequence[] scope,
final String propertyName,
final Token token,
final String containingStructName)
{
final String bitsetName = formatScopedName(scope, token.applicableTypeName());
final int offset = token.offset();
sb.append(String.format("\n" +
"SBE_ONE_DEF struct %1$s *%4$s_%2$s(\n" +
" struct %4$s *const codec,\n" +
" struct %1$s *const bitset)\n" +
"{\n" +
" return %1$s_wrap(\n" +
" bitset,\n" +
" codec->buffer,\n" +
" codec->offset + %3$d,\n" +
" codec->acting_version,\n" +
" codec->buffer_length);\n" +
"}\n",
bitsetName,
propertyName,
offset,
containingStructName));
sb.append(String.format("\n" +
"SBE_ONE_DEF size_t %s_%s_encoding_length(void)\n" +
"{\n" +
" return %d;\n" +
"}\n",
containingStructName,
propertyName,
token.encoding().primitiveType().size()));
}
private static void generateCompositePropertyFunction(
final StringBuilder sb,
final CharSequence[] scope,
final String propertyName,
final Token token,
final String containingStructName)
{
final String compositeName = formatScopedName(scope, token.applicableTypeName());
final int offset = token.offset();
sb.append(String.format("\n" +
"SBE_ONE_DEF struct %1$s *%4$s_%2$s(\n" +
" struct %4$s *const codec,\n" +
" struct %1$s *const composite)\n" +
"{\n" +
" return %1$s_wrap(\n" +
" composite,\n" +
" codec->buffer,\n" +
" codec->offset + %3$d,\n" +
" codec->acting_version,\n" +
" codec->buffer_length);\n" +
"}\n",
compositeName,
propertyName,
offset,
containingStructName));
}
private CharSequence generateNullValueLiteral(final PrimitiveType primitiveType, final Encoding encoding)
{
// Visual C++ does not handle minimum integer values properly
// See: http://msdn.microsoft.com/en-us/library/4kh09110.aspx
// So some null values get special handling
if (null == encoding.nullValue())
{
switch (primitiveType)
{
case CHAR:
case FLOAT:
case DOUBLE:
break; // no special handling
case INT8:
return "SBE_NULLVALUE_INT8";
case INT16:
return "SBE_NULLVALUE_INT16";
case INT32:
return "SBE_NULLVALUE_INT32";
case INT64:
return "SBE_NULLVALUE_INT64";
case UINT8:
return "SBE_NULLVALUE_UINT8";
case UINT16:
return "SBE_NULLVALUE_UINT16";
case UINT32:
return "SBE_NULLVALUE_UINT32";
case UINT64:
return "SBE_NULLVALUE_UINT64";
}
}
return generateLiteral(primitiveType, encoding.applicableNullValue().toString());
}
private static CharSequence generateLiteral(final PrimitiveType type, final String value)
{
String literal = "";
switch (type)
{
case CHAR:
case UINT8:
case UINT16:
case INT8:
case INT16:
literal = "(" + cTypeName(type) + ")" + value;
break;
case UINT32:
literal = "UINT32_C(0x" + Integer.toHexString((int)Long.parseLong(value)) + ")";
break;
case INT32:
{
final long intValue = Long.parseLong(value);
if (intValue == Integer.MIN_VALUE)
{
literal = "INT32_MIN";
}
else
{
literal = "INT32_C(" + value + ")";
}
break;
}
case FLOAT:
literal = value.endsWith("NaN") ? "SBE_FLOAT_NAN" : value + "f";
break;
case INT64:
{
final long longValue = Long.parseLong(value);
if (longValue == Long.MIN_VALUE)
{
literal = "INT64_MIN";
}
else
{
literal = "INT64_C(" + value + ")";
}
break;
}
case UINT64:
literal = "UINT64_C(0x" + Long.toHexString(Long.parseLong(value)) + ")";
break;
case DOUBLE:
literal = value.endsWith("NaN") ? "SBE_DOUBLE_NAN" : value;
break;
}
return literal;
}
}
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