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Switched C# accessors from classes to structs

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This commit is contained in:
Wouter van Oortmerssen
2016-08-12 18:01:38 -07:00
parent d05d114523
commit 52ca75506a
32 changed files with 541 additions and 388 deletions
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358
src/idl_gen_general.cpp
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@@ -76,24 +76,28 @@ struct LanguageParameters {
IDLOptions::Language language;
// Whether function names in the language typically start with uppercase.
bool first_camel_upper;
const char *file_extension;
const char *string_type;
const char *bool_type;
const char *open_curly;
const char *const_decl;
const char *unsubclassable_decl;
const char *enum_decl;
const char *enum_separator;
const char *getter_prefix;
const char *getter_suffix;
const char *inheritance_marker;
const char *namespace_ident;
const char *namespace_begin;
const char *namespace_end;
const char *set_bb_byteorder;
const char *get_bb_position;
const char *get_fbb_offset;
const char *includes;
std::string file_extension;
std::string string_type;
std::string bool_type;
std::string open_curly;
std::string accessor_type;
std::string const_decl;
std::string unsubclassable_decl;
std::string enum_decl;
std::string enum_separator;
std::string getter_prefix;
std::string getter_suffix;
std::string inheritance_marker;
std::string namespace_ident;
std::string namespace_begin;
std::string namespace_end;
std::string set_bb_byteorder;
std::string get_bb_position;
std::string get_fbb_offset;
std::string accessor_prefix;
std::string accessor_prefix_static;
std::string optional_suffix;
std::string includes;
CommentConfig comment_config;
};
@@ -105,6 +109,7 @@ LanguageParameters language_parameters[] = {
"String",
"boolean ",
" {\n",
"class ",
" final ",
"final ",
"final class ",
@@ -118,6 +123,9 @@ LanguageParameters language_parameters[] = {
"_bb.order(ByteOrder.LITTLE_ENDIAN); ",
"position()",
"offset()",
"",
"",
"",
"import java.nio.*;\nimport java.lang.*;\nimport java.util.*;\n"
"import com.google.flatbuffers.*;\n\n@SuppressWarnings(\"unused\")\n",
{
@@ -133,8 +141,9 @@ LanguageParameters language_parameters[] = {
"string",
"bool ",
"\n{\n",
"struct ",
" readonly ",
"sealed ",
"",
"enum ",
",\n",
" { get",
@@ -146,6 +155,9 @@ LanguageParameters language_parameters[] = {
"",
"Position",
"Offset",
"__p.",
"Table.",
"?",
"using System;\nusing FlatBuffers;\n\n",
{
nullptr,
@@ -162,6 +174,7 @@ LanguageParameters language_parameters[] = {
"string",
"bool ",
"\n{\n",
"class ",
"const ",
" ",
"class ",
@@ -175,6 +188,9 @@ LanguageParameters language_parameters[] = {
"",
"position()",
"offset()",
"",
"",
"",
"import (\n\tflatbuffers \"github.com/google/flatbuffers/go\"\n)",
{
nullptr,
@@ -343,7 +359,8 @@ std::string GenOffsetConstruct(const StructDef &struct_def,
const std::string &variable_name)
{
if(lang_.language == IDLOptions::kCSharp) {
return "new Offset<" + WrapInNameSpace(struct_def) + ">(" + variable_name + ")";
return "new Offset<" + WrapInNameSpace(struct_def) + ">(" + variable_name +
")";
}
return variable_name;
}
@@ -401,9 +418,11 @@ std::string DestinationCast(const Type &type) {
}
// Cast statements for mutator method parameters.
// In Java, parameters representing unsigned numbers need to be cast down to their respective type.
// For example, a long holding an unsigned int value would be cast down to int before being put onto the buffer.
// In C#, one cast directly cast an Enum to its underlying type, which is essential before putting it onto the buffer.
// In Java, parameters representing unsigned numbers need to be cast down to
// their respective type. For example, a long holding an unsigned int value
// would be cast down to int before being put onto the buffer. In C#, one cast
// directly cast an Enum to its underlying type, which is essential before
// putting it onto the buffer.
std::string SourceCast(const Type &type, bool castFromDest) {
if (type.base_type == BASE_TYPE_VECTOR) {
return SourceCast(type.VectorType(), castFromDest);
@@ -484,7 +503,8 @@ std::string GenDefaultValueBasic(const Value &value, bool enableLangOverrides) {
case BASE_TYPE_STRING:
return "default(StringOffset)";
case BASE_TYPE_STRUCT:
return "default(Offset<" + WrapInNameSpace(*value.type.struct_def) + ">)";
return "default(Offset<" + WrapInNameSpace(*value.type.struct_def) +
">)";
case BASE_TYPE_VECTOR:
return "default(VectorOffset)";
default:
@@ -513,7 +533,8 @@ void GenEnum(EnumDef &enum_def, std::string *code_ptr) {
GenComment(enum_def.doc_comment, code_ptr, &lang_.comment_config);
code += std::string("public ") + lang_.enum_decl + enum_def.name;
if (lang_.language == IDLOptions::kCSharp) {
code += lang_.inheritance_marker + GenTypeBasic(enum_def.underlying_type, false);
code += lang_.inheritance_marker +
GenTypeBasic(enum_def.underlying_type, false);
}
code += lang_.open_curly;
if (lang_.language == IDLOptions::kJava) {
@@ -578,12 +599,13 @@ void GenEnum(EnumDef &enum_def, std::string *code_ptr) {
// Returns the function name that is able to read a value of the given type.
std::string GenGetter(const Type &type) {
switch (type.base_type) {
case BASE_TYPE_STRING: return "__string";
case BASE_TYPE_STRUCT: return "__struct";
case BASE_TYPE_UNION: return "__union";
case BASE_TYPE_STRING: return lang_.accessor_prefix + "__string";
case BASE_TYPE_STRUCT: return lang_.accessor_prefix + "__struct";
case BASE_TYPE_UNION: return lang_.accessor_prefix + "__union";
case BASE_TYPE_VECTOR: return GenGetter(type.VectorType());
default: {
std::string getter = "bb." + FunctionStart('G') + "et";
std::string getter =
lang_.accessor_prefix + "bb." + FunctionStart('G') + "et";
if (type.base_type == BASE_TYPE_BOOL) {
getter = "0!=" + getter;
} else if (GenTypeBasic(type, false) != "byte") {
@@ -598,7 +620,8 @@ std::string GenGetter(const Type &type) {
// Hence a setter method will only be generated for such fields.
std::string GenSetter(const Type &type) {
if (IsScalar(type.base_type)) {
std::string setter = "bb." + FunctionStart('P') + "ut";
std::string setter =
lang_.accessor_prefix + "bb." + FunctionStart('P') + "ut";
if (GenTypeBasic(type, false) != "byte" &&
type.base_type != BASE_TYPE_BOOL) {
setter += MakeCamel(GenTypeBasic(type, false));
@@ -618,7 +641,8 @@ std::string GenMethod(const Type &type) {
// Recursively generate arguments for a constructor, to deal with nested
// structs.
void GenStructArgs(const StructDef &struct_def, std::string *code_ptr, const char *nameprefix) {
void GenStructArgs(const StructDef &struct_def, std::string *code_ptr,
const char *nameprefix) {
std::string &code = *code_ptr;
for (auto it = struct_def.fields.vec.begin();
it != struct_def.fields.vec.end();
@@ -643,7 +667,8 @@ void GenStructArgs(const StructDef &struct_def, std::string *code_ptr, const cha
// Recusively generate struct construction statements of the form:
// builder.putType(name);
// and insert manual padding.
void GenStructBody(const StructDef &struct_def, std::string *code_ptr, const char *nameprefix) {
void GenStructBody(const StructDef &struct_def, std::string *code_ptr,
const char *nameprefix) {
std::string &code = *code_ptr;
code += " builder." + FunctionStart('P') + "rep(";
code += NumToString(struct_def.minalign) + ", ";
@@ -676,9 +701,10 @@ std::string GenByteBufferLength(const char *bb_name) {
return bb_len;
}
std::string GenOffsetGetter(flatbuffers::FieldDef *key_field, const char *num = nullptr) {
std::string GenOffsetGetter(flatbuffers::FieldDef *key_field,
const char *num = nullptr) {
std::string key_offset = "";
key_offset += "__offset(" +
key_offset += lang_.accessor_prefix_static + "__offset(" +
NumToString(key_field->value.offset) + ", ";
if (num) {
key_offset += num;
@@ -693,10 +719,12 @@ std::string GenOffsetGetter(flatbuffers::FieldDef *key_field, const char *num =
std::string GenLookupKeyGetter(flatbuffers::FieldDef *key_field) {
std::string key_getter = " ";
key_getter += "int tableOffset = __indirect(vectorLocation + 4 * (start + middle)";
key_getter += "int tableOffset = " + lang_.accessor_prefix_static;
key_getter += "__indirect(vectorLocation + 4 * (start + middle)";
key_getter += ", bb);\n ";
if (key_field->value.type.base_type == BASE_TYPE_STRING) {
key_getter += "int comp = " + FunctionStart('C') + "ompareStrings(";
key_getter += "int comp = " + lang_.accessor_prefix_static;
key_getter += FunctionStart('C') + "ompareStrings(";
key_getter += GenOffsetGetter(key_field);
key_getter += ", byteKey, bb);\n";
} else {
@@ -721,6 +749,7 @@ std::string GenKeyGetter(flatbuffers::FieldDef *key_field) {
if (key_field->value.type.base_type == BASE_TYPE_STRING) {
if (lang_.language == IDLOptions::kJava)
key_getter += " return ";
key_getter += lang_.accessor_prefix_static;
key_getter += FunctionStart('C') + "ompareStrings(";
key_getter += GenOffsetGetter(key_field, "o1") + ", ";
key_getter += GenOffsetGetter(key_field, "o2") + ", " + data_buffer + ")";
@@ -765,18 +794,27 @@ void GenStruct(StructDef &struct_def, std::string *code_ptr) {
struct_def.attributes.Lookup("csharp_partial")) {
// generate a partial class for this C# struct/table
code += "partial ";
}
else {
} else {
code += lang_.unsubclassable_decl;
}
code += "class " + struct_def.name + lang_.inheritance_marker;
code += struct_def.fixed ? "Struct" : "Table";
code += " {\n";
code += lang_.accessor_type + struct_def.name;
if (lang_.language == IDLOptions::kCSharp) {
code += " : IFlatbufferObject";
code += lang_.open_curly;
code += " private ";
code += struct_def.fixed ? "Struct" : "Table";
code += " __p;\n";
} else {
code += lang_.inheritance_marker;
code += struct_def.fixed ? "Struct" : "Table";
code += lang_.open_curly;
}
if (!struct_def.fixed) {
// Generate a special accessor for the table that when used as the root
// of a FlatBuffer
std::string method_name = FunctionStart('G') + "etRootAs" + struct_def.name;
std::string method_signature = " public static " + struct_def.name + " " + method_name;
std::string method_signature = " public static " + struct_def.name + " " +
method_name;
// create convenience method that doesn't require an existing object
code += method_signature + "(ByteBuffer _bb) ";
@@ -785,8 +823,7 @@ void GenStruct(StructDef &struct_def, std::string *code_ptr) {
// create method that allows object reuse
code += method_signature + "(ByteBuffer _bb, " + struct_def.name + " obj) { ";
code += lang_.set_bb_byteorder;
code += "return (obj.__init(_bb." + FunctionStart('G');
code += "etInt(_bb.";
code += "return (obj.__assign(_bb." + FunctionStart('G') + "etInt(_bb.";
code += lang_.get_bb_position;
code += ") + _bb.";
code += lang_.get_bb_position;
@@ -797,16 +834,19 @@ void GenStruct(StructDef &struct_def, std::string *code_ptr) {
code += " public static ";
code += lang_.bool_type + struct_def.name;
code += "BufferHasIdentifier(ByteBuffer _bb) { return ";
code += "__has_identifier(_bb, \"" + parser_.file_identifier_;
code += lang_.accessor_prefix_static + "__has_identifier(_bb, \"";
code += parser_.file_identifier_;
code += "\"); }\n";
}
}
}
// Generate the __init method that sets the field in a pre-existing
// accessor object. This is to allow object reuse.
code += " public " + struct_def.name;
code += " __init(int _i, ByteBuffer _bb) ";
code += "{ bb_pos = _i; bb = _bb; return this; }\n\n";
code += " public void __init(int _i, ByteBuffer _bb) ";
code += "{ " + lang_.accessor_prefix + "bb_pos = _i; ";
code += lang_.accessor_prefix + "bb = _bb; }\n";
code += " public " + struct_def.name + " __assign(int _i, ByteBuffer _bb) ";
code += "{ __init(_i, _bb); return this; }\n\n";
for (auto it = struct_def.fields.vec.begin();
it != struct_def.fields.vec.end();
++it) {
@@ -815,28 +855,35 @@ void GenStruct(StructDef &struct_def, std::string *code_ptr) {
GenComment(field.doc_comment, code_ptr, &lang_.comment_config, " ");
std::string type_name = GenTypeGet(field.value.type);
std::string type_name_dest = GenTypeNameDest(field.value.type);
std::string conditional_cast = "";
std::string optional = "";
if (lang_.language == IDLOptions::kCSharp &&
!struct_def.fixed &&
(field.value.type.base_type == BASE_TYPE_STRUCT ||
field.value.type.base_type == BASE_TYPE_UNION ||
(field.value.type.base_type == BASE_TYPE_VECTOR &&
field.value.type.element == BASE_TYPE_STRUCT))) {
optional = lang_.optional_suffix;
conditional_cast = "(" + type_name_dest + optional + ")";
}
std::string dest_mask = DestinationMask(field.value.type, true);
std::string dest_cast = DestinationCast(field.value.type);
std::string src_cast = SourceCast(field.value.type);
std::string method_start = " public " + type_name_dest + " " +
std::string method_start = " public " + type_name_dest + optional + " " +
MakeCamel(field.name, lang_.first_camel_upper);
std::string obj = lang_.language == IDLOptions::kCSharp
? "(new " + type_name + "())"
: "obj";
// Most field accessors need to retrieve and test the field offset first,
// this is the prefix code for that:
auto offset_prefix = " { int o = __offset(" +
NumToString(field.value.offset) +
"); return o != 0 ? ";
auto offset_prefix = " { int o = " + lang_.accessor_prefix + "__offset(" +
NumToString(field.value.offset) +
"); return o != 0 ? ";
// Generate the accessors that don't do object reuse.
if (field.value.type.base_type == BASE_TYPE_STRUCT) {
// Calls the accessor that takes an accessor object with a new object.
if (lang_.language == IDLOptions::kCSharp) {
code += method_start + " { get { return Get";
code += MakeCamel(field.name, lang_.first_camel_upper);
code += "(new ";
code += type_name + "()); } }\n";
method_start = " public " + type_name_dest + " Get" + MakeCamel(field.name, lang_.first_camel_upper);
}
else {
if (lang_.language != IDLOptions::kCSharp) {
code += method_start + "() { return ";
code += MakeCamel(field.name, lang_.first_camel_upper);
code += "(new ";
@@ -846,24 +893,16 @@ void GenStruct(StructDef &struct_def, std::string *code_ptr) {
field.value.type.element == BASE_TYPE_STRUCT) {
// Accessors for vectors of structs also take accessor objects, this
// generates a variant without that argument.
if (lang_.language == IDLOptions::kCSharp) {
method_start = " public " + type_name_dest + " Get" + MakeCamel(field.name, lang_.first_camel_upper);
code += method_start + "(int j) { return Get";
} else {
if (lang_.language != IDLOptions::kCSharp) {
code += method_start + "(int j) { return ";
}
code += MakeCamel(field.name, lang_.first_camel_upper);
code += "(new ";
code += type_name + "(), j); }\n";
} else if (field.value.type.base_type == BASE_TYPE_VECTOR) {
if (lang_.language == IDLOptions::kCSharp) {
method_start = " public " + type_name_dest + " Get" + MakeCamel(field.name, lang_.first_camel_upper);
code += MakeCamel(field.name, lang_.first_camel_upper);
code += "(new " + type_name + "(), j); }\n";
}
} else if (field.value.type.base_type == BASE_TYPE_UNION) {
if (lang_.language == IDLOptions::kCSharp) {
// union types in C# use generic Table-derived type for better type safety
method_start = " public " + type_name_dest + " Get" + MakeCamel(field.name, lang_.first_camel_upper) + "<TTable>";
offset_prefix = " where TTable : Table" + offset_prefix;
// Union types in C# use generic Table-derived type for better type
// safety.
method_start += "<TTable>";
type_name = type_name_dest;
}
}
@@ -873,64 +912,78 @@ void GenStruct(StructDef &struct_def, std::string *code_ptr) {
// only create default casts for c# scalars or vectors of scalars
if (lang_.language == IDLOptions::kCSharp &&
(IsScalar(field.value.type.base_type) ||
(field.value.type.base_type == BASE_TYPE_VECTOR && IsScalar(field.value.type.element)))) {
// For scalars, default value will be returned by GetDefaultValue(). If the scalar is an enum, GetDefaultValue()
// returns an actual c# enum that doesn't need to be casted. However, default values for enum elements of
// vectors are integer literals ("0") and are still casted for clarity.
if (field.value.type.enum_def == nullptr || field.value.type.base_type == BASE_TYPE_VECTOR) {
(field.value.type.base_type == BASE_TYPE_VECTOR &&
IsScalar(field.value.type.element)))) {
// For scalars, default value will be returned by GetDefaultValue().
// If the scalar is an enum, GetDefaultValue() returns an actual c# enum
// that doesn't need to be casted. However, default values for enum
// elements of vectors are integer literals ("0") and are still casted
// for clarity.
if (field.value.type.enum_def == nullptr ||
field.value.type.base_type == BASE_TYPE_VECTOR) {
default_cast = "(" + type_name_dest + ")";
}
}
std::string member_suffix = "";
std::string member_suffix = "; ";
if (IsScalar(field.value.type.base_type)) {
code += lang_.getter_prefix;
member_suffix = lang_.getter_suffix;
member_suffix += lang_.getter_suffix;
if (struct_def.fixed) {
code += " { return " + getter;
code += "(bb_pos + " + NumToString(field.value.offset) + ")";
code += "(" + lang_.accessor_prefix + "bb_pos + ";
code += NumToString(field.value.offset) + ")";
code += dest_mask;
} else {
code += offset_prefix + getter;
code += "(o + bb_pos)" + dest_mask + " : " + default_cast;
code += "(o + " + lang_.accessor_prefix + "bb_pos)" + dest_mask;
code += " : " + default_cast;
code += GenDefaultValue(field.value);
}
} else {
switch (field.value.type.base_type) {
case BASE_TYPE_STRUCT:
code += "(" + type_name + " obj";
if (struct_def.fixed) {
code += ") { return obj.__init(bb_pos + ";
code += NumToString(field.value.offset) + ", bb)";
if (lang_.language != IDLOptions::kCSharp) {
code += "(" + type_name + " obj" + ")";
} else {
code += ")";
code += offset_prefix;
code += "obj.__init(";
code += lang_.getter_prefix;
member_suffix += lang_.getter_suffix;
}
if (struct_def.fixed) {
code += " { return " + obj + ".__assign(" + lang_.accessor_prefix;
code += "bb_pos + " + NumToString(field.value.offset) + ", ";
code += lang_.accessor_prefix + "bb)";
} else {
code += offset_prefix + conditional_cast;
code += obj + ".__assign(";
code += field.value.type.struct_def->fixed
? "o + bb_pos"
: "__indirect(o + bb_pos)";
code += ", bb) : null";
? "o + " + lang_.accessor_prefix + "bb_pos"
: lang_.accessor_prefix + "__indirect(o + " +
lang_.accessor_prefix + "bb_pos)";
code += ", " + lang_.accessor_prefix + "bb) : null";
}
break;
case BASE_TYPE_STRING:
code += lang_.getter_prefix;
member_suffix = lang_.getter_suffix;
code += offset_prefix + getter + "(o + bb_pos) : null";
member_suffix += lang_.getter_suffix;
code += offset_prefix + getter + "(o + " + lang_.accessor_prefix;
code += "bb_pos) : null";
break;
case BASE_TYPE_VECTOR: {
auto vectortype = field.value.type.VectorType();
code += "(";
if (vectortype.base_type == BASE_TYPE_STRUCT) {
code += type_name + " obj, ";
getter = "obj.__init";
if (lang_.language != IDLOptions::kCSharp)
code += type_name + " obj, ";
getter = obj + ".__assign";
}
code += "int j)" + offset_prefix + getter +"(";
auto index = "__vector(o) + j * " +
code += "int j)" + offset_prefix + conditional_cast + getter +"(";
auto index = lang_.accessor_prefix + "__vector(o) + j * " +
NumToString(InlineSize(vectortype));
if (vectortype.base_type == BASE_TYPE_STRUCT) {
code += vectortype.struct_def->fixed
? index
: "__indirect(" + index + ")";
code += ", bb";
: lang_.accessor_prefix + "__indirect(" + index + ")";
code += ", " + lang_.accessor_prefix + "bb";
} else {
code += index;
}
@@ -941,14 +994,19 @@ void GenStruct(StructDef &struct_def, std::string *code_ptr) {
break;
}
case BASE_TYPE_UNION:
code += "(" + type_name + " obj)" + offset_prefix + getter;
code += "(obj, o) : null";
if (lang_.language == IDLOptions::kCSharp) {
code += "() where TTable : struct, IFlatbufferObject";
code += offset_prefix + "(TTable?)" + getter;
code += "<TTable>(o) : null";
} else {
code += "(" + type_name + " obj)" + offset_prefix + getter;
code += "(obj, o) : null";
}
break;
default:
assert(0);
}
}
code += "; ";
code += member_suffix;
code += "}\n";
if (field.value.type.base_type == BASE_TYPE_VECTOR) {
@@ -956,7 +1014,7 @@ void GenStruct(StructDef &struct_def, std::string *code_ptr) {
code += "Length";
code += lang_.getter_prefix;
code += offset_prefix;
code += "__vector_len(o) : 0; ";
code += lang_.accessor_prefix + "__vector_len(o) : 0; ";
code += lang_.getter_suffix;
code += "}\n";
}
@@ -968,16 +1026,19 @@ void GenStruct(StructDef &struct_def, std::string *code_ptr) {
case IDLOptions::kJava:
code += " public ByteBuffer ";
code += MakeCamel(field.name, lang_.first_camel_upper);
code += "AsByteBuffer() { return __vector_as_bytebuffer(";
code += "AsByteBuffer() { return ";
code += lang_.accessor_prefix + "__vector_as_bytebuffer(";
code += NumToString(field.value.offset) + ", ";
code += NumToString(field.value.type.base_type == BASE_TYPE_STRING ? 1 :
InlineSize(field.value.type.VectorType()));
code += NumToString(field.value.type.base_type == BASE_TYPE_STRING
? 1
: InlineSize(field.value.type.VectorType()));
code += "); }\n";
break;
case IDLOptions::kCSharp:
code += " public ArraySegment<byte>? Get";
code += MakeCamel(field.name, lang_.first_camel_upper);
code += "Bytes() { return __vector_as_arraysegment(";
code += "Bytes() { return ";
code += lang_.accessor_prefix + "__vector_as_arraysegment(";
code += NumToString(field.value.offset);
code += "); }\n";
break;
@@ -997,30 +1058,49 @@ void GenStruct(StructDef &struct_def, std::string *code_ptr) {
auto getNestedMethodName = nestedMethodName;
if (lang_.language == IDLOptions::kCSharp) {
getNestedMethodName = "Get" + nestedMethodName;
conditional_cast = "(" + nested_type_name + lang_.optional_suffix + ")";
}
code += " public " + nested_type_name + " ";
code += nestedMethodName + "() { return ";
code += getNestedMethodName + "(new " + nested_type_name + "()); }\n";
code += " public " + nested_type_name + " " + getNestedMethodName;
code += "(" + nested_type_name + " obj) { ";
code += "int o = __offset(" + NumToString(field.value.offset) +"); ";
code += "return o != 0 ? obj.__init(__indirect(__vector(o)), bb) : null; }\n";
if (lang_.language != IDLOptions::kCSharp) {
code += " public " + nested_type_name + lang_.optional_suffix + " ";
code += nestedMethodName + "() { return ";
code += getNestedMethodName + "(new " + nested_type_name + "()); }\n";
} else {
obj = "(new " + nested_type_name + "())";
}
code += " public " + nested_type_name + lang_.optional_suffix + " ";
code += getNestedMethodName + "(";
if (lang_.language != IDLOptions::kCSharp)
code += nested_type_name + " obj";
code += ") { int o = " + lang_.accessor_prefix + "__offset(";
code += NumToString(field.value.offset) +"); ";
code += "return o != 0 ? " + conditional_cast + obj + ".__assign(";
code += lang_.accessor_prefix;
code += "__indirect(" + lang_.accessor_prefix + "__vector(o)), ";
code += lang_.accessor_prefix + "bb) : null; }\n";
}
// generate mutators for scalar fields or vectors of scalars
// Generate mutators for scalar fields or vectors of scalars.
if (parser_.opts.mutable_buffer) {
auto underlying_type = field.value.type.base_type == BASE_TYPE_VECTOR
? field.value.type.VectorType()
: field.value.type;
// boolean parameters have to be explicitly converted to byte representation
auto setter_parameter = underlying_type.base_type == BASE_TYPE_BOOL ? "(byte)(" + field.name + " ? 1 : 0)" : field.name;
// Boolean parameters have to be explicitly converted to byte
// representation.
auto setter_parameter = underlying_type.base_type == BASE_TYPE_BOOL
? "(byte)(" + field.name + " ? 1 : 0)"
: field.name;
auto mutator_prefix = MakeCamel("mutate", lang_.first_camel_upper);
//a vector mutator also needs the index of the vector element it should mutate
auto mutator_params = (field.value.type.base_type == BASE_TYPE_VECTOR ? "(int j, " : "(") +
GenTypeNameDest(underlying_type) + " " +
field.name + ") { ";
// A vector mutator also needs the index of the vector element it should
// mutate.
auto mutator_params = (field.value.type.base_type == BASE_TYPE_VECTOR
? "(int j, "
: "(") + GenTypeNameDest(underlying_type) + " " + field.name + ") { ";
auto setter_index = field.value.type.base_type == BASE_TYPE_VECTOR
? "__vector(o) + j * " + NumToString(InlineSize(underlying_type))
: (struct_def.fixed ? "bb_pos + " + NumToString(field.value.offset) : "o + bb_pos");
? lang_.accessor_prefix + "__vector(o) + j * " +
NumToString(InlineSize(underlying_type))
: (struct_def.fixed
? lang_.accessor_prefix + "bb_pos + " +
NumToString(field.value.offset)
: "o + " + lang_.accessor_prefix + "bb_pos");
if (IsScalar(field.value.type.base_type) ||
(field.value.type.base_type == BASE_TYPE_VECTOR &&
IsScalar(field.value.type.VectorType().base_type))) {
@@ -1032,9 +1112,11 @@ void GenStruct(StructDef &struct_def, std::string *code_ptr) {
code += GenSetter(underlying_type) + "(" + setter_index + ", ";
code += src_cast + setter_parameter + "); }\n";
} else {
code += "int o = __offset(" + NumToString(field.value.offset) + ");";
code += "int o = " + lang_.accessor_prefix + "__offset(";
code += NumToString(field.value.offset) + ");";
code += " if (o != 0) { " + GenSetter(underlying_type);
code += "(" + setter_index + ", " + src_cast + setter_parameter + "); return true; } else { return false; } }\n";
code += "(" + setter_index + ", " + src_cast + setter_parameter +
"); return true; } else { return false; } }\n";
}
}
}
@@ -1050,7 +1132,8 @@ void GenStruct(StructDef &struct_def, std::string *code_ptr) {
code += ") {\n";
GenStructBody(struct_def, code_ptr, "");
code += " return ";
code += GenOffsetConstruct(struct_def, "builder." + std::string(lang_.get_fbb_offset));
code += GenOffsetConstruct(struct_def,
"builder." + std::string(lang_.get_fbb_offset));
code += ";\n }\n";
} else {
// Generate a method that creates a table in one go. This is only possible
@@ -1141,7 +1224,9 @@ void GenStruct(StructDef &struct_def, std::string *code_ptr) {
code += NumToString(it - struct_def.fields.vec.begin()) + ", ";
code += SourceCastBasic(field.value.type);
code += argname;
if(!IsScalar(field.value.type.base_type) && field.value.type.base_type != BASE_TYPE_UNION && lang_.language == IDLOptions::kCSharp) {
if (!IsScalar(field.value.type.base_type) &&
field.value.type.base_type != BASE_TYPE_UNION &&
lang_.language == IDLOptions::kCSharp) {
code += ".Value";
}
code += ", " + GenDefaultValue(field.value, false);
@@ -1152,7 +1237,8 @@ void GenStruct(StructDef &struct_def, std::string *code_ptr) {
auto elem_size = InlineSize(vector_type);
if (!IsStruct(vector_type)) {
// Generate a method to create a vector from a Java array.
code += " public static " + GenVectorOffsetType() + " " + FunctionStart('C') + "reate";
code += " public static " + GenVectorOffsetType() + " ";
code += FunctionStart('C') + "reate";
code += MakeCamel(field.name);
code += "Vector(FlatBufferBuilder builder, ";
code += GenTypeBasic(vector_type) + "[] data) ";
@@ -1168,7 +1254,8 @@ void GenStruct(StructDef &struct_def, std::string *code_ptr) {
code += SourceCastBasic(vector_type, false);
code += "data[i]";
if (lang_.language == IDLOptions::kCSharp &&
(vector_type.base_type == BASE_TYPE_STRUCT || vector_type.base_type == BASE_TYPE_STRING))
(vector_type.base_type == BASE_TYPE_STRUCT ||
vector_type.base_type == BASE_TYPE_STRING))
code += ".Value";
code += "); return ";
code += "builder." + FunctionStart('E') + "ndVector(); }\n";
@@ -1201,7 +1288,8 @@ void GenStruct(StructDef &struct_def, std::string *code_ptr) {
if (parser_.root_struct_def_ == &struct_def) {
code += " public static void ";
code += FunctionStart('F') + "inish" + struct_def.name;
code += "Buffer(FlatBufferBuilder builder, " + GenOffsetType(struct_def) + " offset) {";
code += "Buffer(FlatBufferBuilder builder, " + GenOffsetType(struct_def);
code += " offset) {";
code += " builder." + FunctionStart('F') + "inish(offset";
if (lang_.language == IDLOptions::kCSharp) {
code += ".Value";
@@ -1230,8 +1318,8 @@ void GenStruct(StructDef &struct_def, std::string *code_ptr) {
code += " return builder.CreateVectorOfTables(offsets);\n }\n";
}
code += "\n public static " + struct_def.name + " " + FunctionStart('L');
code += "ookupByKey(" + GenVectorOffsetType();
code += "\n public static " + struct_def.name + lang_.optional_suffix;
code += " " + FunctionStart('L') + "ookupByKey(" + GenVectorOffsetType();
code += " vectorOffset, " + GenTypeGet(key_field->value.type);
code += " key, ByteBuffer bb) {\n";
if (key_field->value.type.base_type == BASE_TYPE_STRING) {
@@ -1259,7 +1347,7 @@ void GenStruct(StructDef &struct_def, std::string *code_ptr) {
code += " span -= middle;\n";
code += " } else {\n";
code += " return new " + struct_def.name;
code += "().__init(tableOffset, bb);\n";
code += "().__assign(tableOffset, bb);\n";
code += " }\n }\n";
code += " return null;\n";
code += " }\n";