mirror of
https://github.com/google/flatbuffers.git
synced 2026-06-17 13:15:19 +00:00
Port FlatBuffers to Go.
Implement code generation and runtime library for Go, derived from the Java implementation. Additionally, the test suite verifies: - the exact bytes in the Builder buffer during object construction, - vtable deduplication, and - table construction, via a fuzzer derived from the C++ implementation. Change-Id: Ib95a019c684891def2b50281e570b4843fea7baa
This commit is contained in:
rw
committed by
Wouter van Oortmerssen
Wouter van Oortmerssen
parent
3fb6a86d02
commit
74d5f3701f
@@ -71,6 +71,8 @@ const Generator generators[] = {
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"Generate text output for any data definitions" },
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{ flatbuffers::GenerateCPP, "c", "C++",
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"Generate C++ headers for tables/structs" },
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{ flatbuffers::GenerateGo, "g", "Go",
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"Generate Go files for tables/structs" },
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{ flatbuffers::GenerateJava, "j", "Java",
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"Generate Java classes for tables/structs" },
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};
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@@ -162,7 +164,7 @@ int main(int argc, const char *argv[]) {
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if (!any_generator)
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Error("no options: no output files generated.",
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"specify one of -c -j -t -b etc.", true);
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"specify one of -c -g -j -t -b etc.", true);
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// Now process the files:
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for (auto file_it = filenames.begin();
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@@ -26,7 +26,7 @@ namespace cpp {
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// Return a C++ type from the table in idl.h
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static std::string GenTypeBasic(const Type &type) {
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static const char *ctypename[] = {
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#define FLATBUFFERS_TD(ENUM, IDLTYPE, CTYPE, JTYPE) #CTYPE,
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#define FLATBUFFERS_TD(ENUM, IDLTYPE, CTYPE, JTYPE, GTYPE) #CTYPE,
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FLATBUFFERS_GEN_TYPES(FLATBUFFERS_TD)
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#undef FLATBUFFERS_TD
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};
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680
src/idl_gen_go.cpp
Executable file
680
src/idl_gen_go.cpp
Executable file
@@ -0,0 +1,680 @@
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/*
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* Copyright 2014 Google Inc. All rights reserved.
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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// independent from idl_parser, since this code is not needed for most clients
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#include <string>
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#include "flatbuffers/flatbuffers.h"
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#include "flatbuffers/idl.h"
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#include "flatbuffers/util.h"
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#ifdef _WIN32
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#include <direct.h>
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#define PATH_SEPARATOR "\\"
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#define mkdir(n, m) _mkdir(n)
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#else
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#include <sys/stat.h>
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#define PATH_SEPARATOR "/"
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#endif
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namespace flatbuffers {
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namespace go {
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static std::string GenGetter(const Type &type);
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static std::string GenMethod(const FieldDef &field);
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static void GenStructBuilder(const StructDef &struct_def,
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std::string *code_ptr);
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static void GenReceiver(const StructDef &struct_def, std::string *code_ptr);
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static std::string GenTypeBasic(const Type &type);
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static std::string GenTypeGet(const Type &type);
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static std::string TypeName(const FieldDef &field);
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// Write a comment.
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static void Comment(const std::string &dc,
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std::string *code_ptr,
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const char *prefix = "") {
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std::string &code = *code_ptr;
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if (dc.length()) {
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code += std::string(prefix) + "///" + dc + "\n";
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}
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}
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// Most field accessors need to retrieve and test the field offset first,
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// this is the prefix code for that.
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std::string OffsetPrefix(const FieldDef &field) {
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return "{\n\to := flatbuffers.UOffsetT(rcv._tab.Offset(" +
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NumToString(field.value.offset) +
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"))\n\tif o != 0 {\n";
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}
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// Begin by declaring namespace and imports.
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static void BeginFile(const std::string name_space_name,
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const bool needs_imports,
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std::string *code_ptr) {
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std::string &code = *code_ptr;
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code += "// automatically generated, do not modify\n\n";
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code += "package " + name_space_name + "\n\n";
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if (needs_imports) {
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code += "import (\n";
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code += "\tflatbuffers \"github.com/google/flatbuffers/go\"\n";
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code += ")\n";
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}
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}
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// Begin a class declaration.
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static void BeginClass(const StructDef &struct_def, std::string *code_ptr) {
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std::string &code = *code_ptr;
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code += "type " + struct_def.name + " struct {\n\t";
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// _ is reserved in flatbuffers field names, so no chance of name conflict:
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code += "_tab ";
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code += struct_def.fixed ? "flatbuffers.Struct" : "flatbuffers.Table";
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code += "\n}\n\n";
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}
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// Begin enum code with a class declaration.
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static void BeginEnum(std::string *code_ptr) {
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std::string &code = *code_ptr;
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code += "const (\n";
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}
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// A single enum member.
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static void EnumMember(const EnumDef &enum_def, const EnumVal ev,
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std::string *code_ptr) {
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std::string &code = *code_ptr;
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code += "\t";
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code += enum_def.name;
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code += ev.name;
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code += " = ";
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code += NumToString(ev.value) + "\n";
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}
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// End enum code.
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static void EndEnum(std::string *code_ptr) {
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std::string &code = *code_ptr;
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code += ")\n";
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}
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// Initialize a new struct or table from existing data.
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static void NewRootTypeFromBuffer(const StructDef &struct_def,
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std::string *code_ptr) {
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std::string &code = *code_ptr;
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code += "func GetRootAs";
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code += struct_def.name;
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code += "(buf []byte, offset flatbuffers.UOffsetT) ";
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code += "*" + struct_def.name + "";
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code += " {\n";
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code += "\tn := flatbuffers.GetUOffsetT(buf[offset:])\n";
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code += "\tx := &" + struct_def.name + "{}\n";
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code += "\tx.Init(buf, n + offset)\n";
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code += "\treturn x\n";
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code += "}\n\n";
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}
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// Initialize an existing object with other data, to avoid an allocation.
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static void InitializeExisting(const StructDef &struct_def,
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std::string *code_ptr) {
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std::string &code = *code_ptr;
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GenReceiver(struct_def, code_ptr);
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code += " Init(buf []byte, i flatbuffers.UOffsetT) ";
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code += "{\n";
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code += "\trcv._tab.Bytes = buf\n";
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code += "\trcv._tab.Pos = i\n";
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code += "}\n\n";
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}
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// Get the length of a vector.
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static void GetVectorLen(const StructDef &struct_def,
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const FieldDef &field,
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std::string *code_ptr) {
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std::string &code = *code_ptr;
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GenReceiver(struct_def, code_ptr);
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code += " " + MakeCamel(field.name) + "Length(";
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code += ") int " + OffsetPrefix(field);
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code += "\t\treturn rcv._tab.VectorLen(o)\n\t}\n";
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code += "\treturn 0\n}\n\n";
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}
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// Get the value of a struct's scalar.
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static void GetScalarFieldOfStruct(const StructDef &struct_def,
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const FieldDef &field,
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std::string *code_ptr) {
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std::string &code = *code_ptr;
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std::string getter = GenGetter(field.value.type);
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GenReceiver(struct_def, code_ptr);
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code += " " + MakeCamel(field.name);
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code += "() " + TypeName(field) + " { return " + getter;
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code += "(rcv._tab.Pos + flatbuffers.UOffsetT(";
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code += NumToString(field.value.offset) + ")) }\n";
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}
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// Get the value of a table's scalar.
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static void GetScalarFieldOfTable(const StructDef &struct_def,
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const FieldDef &field,
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std::string *code_ptr) {
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std::string &code = *code_ptr;
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std::string getter = GenGetter(field.value.type);
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GenReceiver(struct_def, code_ptr);
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code += " " + MakeCamel(field.name);
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code += "() " + TypeName(field) + " ";
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code += OffsetPrefix(field) + "\t\treturn " + getter;
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code += "(o + rcv._tab.Pos)\n\t}\n";
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code += "\treturn " + field.value.constant + "\n";
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code += "}\n\n";
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}
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// Get a struct by initializing an existing struct.
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// Specific to Struct.
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static void GetStructFieldOfStruct(const StructDef &struct_def,
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const FieldDef &field,
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std::string *code_ptr) {
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std::string &code = *code_ptr;
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GenReceiver(struct_def, code_ptr);
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code += " " + MakeCamel(field.name);
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code += "(obj *" + TypeName(field);
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code += ") *" + TypeName(field);
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code += " {\n";
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code += "\tif obj == nil {\n";
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code += "\t\tobj = new(" + TypeName(field) + ")\n";
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code += "\t}\n";
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code += "\tobj.Init(rcv._tab.Bytes, rcv._tab.Pos + ";
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code += NumToString(field.value.offset) + ")";
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code += "\n\treturn obj\n";
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code += "}\n";
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}
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// Get a struct by initializing an existing struct.
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// Specific to Table.
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static void GetStructFieldOfTable(const StructDef &struct_def,
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const FieldDef &field,
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std::string *code_ptr) {
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std::string &code = *code_ptr;
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GenReceiver(struct_def, code_ptr);
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code += " " + MakeCamel(field.name);
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code += "(obj *";
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code += TypeName(field);
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code += ") *" + TypeName(field) + " " + OffsetPrefix(field);
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if (field.value.type.struct_def->fixed) {
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code += "\t\tx := o + rcv._tab.Pos\n";
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} else {
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code += "\t\tx := rcv._tab.Indirect(o + rcv._tab.Pos)\n";
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}
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code += "\t\tif obj == nil {\n";
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code += "\t\t\tobj = new(" + TypeName(field) + ")\n";
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code += "\t\t}\n";
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code += "\t\tobj.Init(rcv._tab.Bytes, x)\n";
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code += "\t\treturn obj\n\t}\n\treturn nil\n";
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code += "}\n\n";
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}
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// Get the value of a string.
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static void GetStringField(const StructDef &struct_def,
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const FieldDef &field,
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std::string *code_ptr) {
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std::string &code = *code_ptr;
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GenReceiver(struct_def, code_ptr);
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code += " " + MakeCamel(field.name);
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code += "() " + TypeName(field) + " ";
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code += OffsetPrefix(field) + "\t\treturn " + GenGetter(field.value.type);
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code += "(o)\n\t}\n\treturn \"\"\n";
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code += "}\n\n";
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}
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// Get the value of a union from an object.
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static void GetUnionField(const StructDef &struct_def,
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const FieldDef &field,
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std::string *code_ptr) {
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std::string &code = *code_ptr;
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GenReceiver(struct_def, code_ptr);
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code += " " + MakeCamel(field.name) + "(";
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code += "obj " + TypeName(field) + ") bool ";
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code += OffsetPrefix(field);
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code += "\t\t" + GenGetter(field.value.type);
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code += "(obj, o)\n\t\treturn true\n\t}\n";
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code += "\treturn false\n";
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code += "}\n\n";
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}
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// Get the value of a vector's struct member.
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static void GetMemberOfVectorOfStruct(const StructDef &struct_def,
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const FieldDef &field,
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std::string *code_ptr) {
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std::string &code = *code_ptr;
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auto vectortype = field.value.type.VectorType();
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GenReceiver(struct_def, code_ptr);
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code += " " + MakeCamel(field.name);
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code += "(obj *" + TypeName(field);
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code += ", j int) bool " + OffsetPrefix(field);
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code += "\t\tx := rcv._tab.Vector(o)\n";
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code += "\t\tx += flatbuffers.UOffsetT(j) * ";
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code += NumToString(InlineSize(vectortype)) + "\n";
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if (!(vectortype.struct_def->fixed)) {
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code += "\t\tx = rcv._tab.Indirect(x)\n";
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}
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code += "\tif obj == nil {\n";
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code += "\t\tobj = new(" + TypeName(field) + ")\n";
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code += "\t}\n";
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code += "\t\tobj.Init(rcv._tab.Bytes, x)\n";
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code += "\t\treturn true\n\t}\n";
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code += "\treturn false\n";
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code += "}\n\n";
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}
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// Get the value of a vector's non-struct member. Uses a named return
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// argument to conveniently set the zero value for the result.
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static void GetMemberOfVectorOfNonStruct(const StructDef &struct_def,
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const FieldDef &field,
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std::string *code_ptr) {
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std::string &code = *code_ptr;
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auto vectortype = field.value.type.VectorType();
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GenReceiver(struct_def, code_ptr);
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code += " " + MakeCamel(field.name);
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code += "(j int) " + TypeName(field) + " ";
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code += OffsetPrefix(field);
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code += "\t\ta := rcv._tab.Vector(o)\n";
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code += "\t\treturn " + GenGetter(field.value.type) + "(";
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code += "a + flatbuffers.UOffsetT(j * ";
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code += NumToString(InlineSize(vectortype)) + "))\n";
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code += "\t}\n";
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if (vectortype.base_type == BASE_TYPE_STRING) {
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code += "\treturn \"\"\n";
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} else {
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code += "\treturn 0\n";
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}
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code += "}\n\n";
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}
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// Begin the creator function signature.
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static void BeginBuilderArgs(const StructDef &struct_def,
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std::string *code_ptr) {
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std::string &code = *code_ptr;
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code += "\n";
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code += "func Create" + struct_def.name;
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code += "(builder *flatbuffers.Builder";
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}
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// Recursively generate arguments for a constructor, to deal with nested
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// structs.
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static void StructBuilderArgs(const StructDef &struct_def,
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const char *nameprefix,
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std::string *code_ptr) {
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for (auto it = struct_def.fields.vec.begin();
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it != struct_def.fields.vec.end();
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++it) {
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auto &field = **it;
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if (IsStruct(field.value.type)) {
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// Generate arguments for a struct inside a struct. To ensure names
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// don't clash, and to make it obvious these arguments are constructing
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// a nested struct, prefix the name with the struct name.
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StructBuilderArgs(*field.value.type.struct_def,
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(field.value.type.struct_def->name + "_").c_str(),
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code_ptr);
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} else {
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std::string &code = *code_ptr;
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code += (std::string)", " + nameprefix;
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code += MakeCamel(field.name, false);
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code += " " + GenTypeBasic(field.value.type);
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}
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}
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}
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// End the creator function signature.
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static void EndBuilderArgs(std::string *code_ptr) {
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std::string &code = *code_ptr;
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code += ") flatbuffers.UOffsetT {\n";
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}
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|
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// Recursively generate struct construction statements and instert manual
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// padding.
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static void StructBuilderBody(const StructDef &struct_def,
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const char *nameprefix,
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std::string *code_ptr) {
|
||||
std::string &code = *code_ptr;
|
||||
code += " builder.Prep(" + NumToString(struct_def.minalign) + ", ";
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code += NumToString(struct_def.bytesize) + ")\n";
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for (auto it = struct_def.fields.vec.rbegin();
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it != struct_def.fields.vec.rend();
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++it) {
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auto &field = **it;
|
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if (field.padding)
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code += " builder.Pad(" + NumToString(field.padding) + ")\n";
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if (IsStruct(field.value.type)) {
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StructBuilderBody(*field.value.type.struct_def,
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(field.value.type.struct_def->name + "_").c_str(),
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code_ptr);
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} else {
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code += " builder.Prepend" + GenMethod(field) + "(";
|
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code += nameprefix + MakeCamel(field.name, false) + ")\n";
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}
|
||||
}
|
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}
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||||
|
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static void EndBuilderBody(std::string *code_ptr) {
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||||
std::string &code = *code_ptr;
|
||||
code += " return builder.Offset()\n";
|
||||
code += "}\n";
|
||||
}
|
||||
|
||||
// Get the value of a table's starting offset.
|
||||
static void GetStartOfTable(const StructDef &struct_def,
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||||
std::string *code_ptr) {
|
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std::string &code = *code_ptr;
|
||||
code += "func " + struct_def.name + "Start";
|
||||
code += "(builder *flatbuffers.Builder) { ";
|
||||
code += "builder.StartObject(";
|
||||
code += NumToString(struct_def.fields.vec.size());
|
||||
code += ") }\n";
|
||||
}
|
||||
|
||||
// Set the value of a table's field.
|
||||
static void BuildFieldOfTable(const StructDef &struct_def,
|
||||
const FieldDef &field,
|
||||
const size_t offset,
|
||||
std::string *code_ptr) {
|
||||
std::string &code = *code_ptr;
|
||||
code += "func " + struct_def.name + "Add" + MakeCamel(field.name);
|
||||
code += "(builder *flatbuffers.Builder, ";
|
||||
code += MakeCamel(field.name, false) + " ";
|
||||
if (!IsScalar(field.value.type.base_type) && (!struct_def.fixed)) {
|
||||
code += "flatbuffers.UOffsetT";
|
||||
} else {
|
||||
code += GenTypeBasic(field.value.type);
|
||||
}
|
||||
code += ") ";
|
||||
code += "{ builder.Prepend";
|
||||
code += GenMethod(field) + "Slot(";
|
||||
code += NumToString(offset) + ", ";
|
||||
if (!IsScalar(field.value.type.base_type) && (!struct_def.fixed)) {
|
||||
code += "flatbuffers.UOffsetT";
|
||||
code += "(";
|
||||
code += MakeCamel(field.name, false) + ")";
|
||||
} else {
|
||||
code += MakeCamel(field.name, false);
|
||||
}
|
||||
code += ", " + field.value.constant;
|
||||
code += ") }\n";
|
||||
}
|
||||
|
||||
// Set the value of one of the members of a table's vector.
|
||||
static void BuildVectorOfTable(const StructDef &struct_def,
|
||||
const FieldDef &field,
|
||||
std::string *code_ptr) {
|
||||
std::string &code = *code_ptr;
|
||||
code += "func " + struct_def.name + "Start";
|
||||
code += MakeCamel(field.name);
|
||||
code += "Vector(builder *flatbuffers.Builder, numElems int) ";
|
||||
code += "flatbuffers.UOffsetT { return builder.StartVector(";
|
||||
code += NumToString(InlineSize(field.value.type.VectorType()));
|
||||
code += ", numElems) }\n";
|
||||
}
|
||||
|
||||
// Get the offset of the end of a table.
|
||||
static void GetEndOffsetOnTable(const StructDef &struct_def,
|
||||
std::string *code_ptr) {
|
||||
std::string &code = *code_ptr;
|
||||
code += "func " + struct_def.name + "End";
|
||||
code += "(builder *flatbuffers.Builder) flatbuffers.UOffsetT ";
|
||||
code += "{ return builder.EndObject() }\n";
|
||||
}
|
||||
|
||||
// Generate the receiver for function signatures.
|
||||
static void GenReceiver(const StructDef &struct_def, std::string *code_ptr) {
|
||||
std::string &code = *code_ptr;
|
||||
code += "func (rcv *" + struct_def.name + ")";
|
||||
}
|
||||
|
||||
// Generate a struct field, conditioned on its child type(s).
|
||||
static void GenStructAccessor(const StructDef &struct_def,
|
||||
const FieldDef &field,
|
||||
std::string *code_ptr) {
|
||||
Comment(field.doc_comment, code_ptr, "");
|
||||
if (IsScalar(field.value.type.base_type)) {
|
||||
if (struct_def.fixed) {
|
||||
GetScalarFieldOfStruct(struct_def, field, code_ptr);
|
||||
} else {
|
||||
GetScalarFieldOfTable(struct_def, field, code_ptr);
|
||||
}
|
||||
} else {
|
||||
switch (field.value.type.base_type) {
|
||||
case BASE_TYPE_STRUCT:
|
||||
if (struct_def.fixed) {
|
||||
GetStructFieldOfStruct(struct_def, field, code_ptr);
|
||||
} else {
|
||||
GetStructFieldOfTable(struct_def, field, code_ptr);
|
||||
}
|
||||
break;
|
||||
case BASE_TYPE_STRING:
|
||||
GetStringField(struct_def, field, code_ptr);
|
||||
break;
|
||||
case BASE_TYPE_VECTOR: {
|
||||
auto vectortype = field.value.type.VectorType();
|
||||
if (vectortype.base_type == BASE_TYPE_STRUCT) {
|
||||
GetMemberOfVectorOfStruct(struct_def, field, code_ptr);
|
||||
} else {
|
||||
GetMemberOfVectorOfNonStruct(struct_def, field, code_ptr);
|
||||
}
|
||||
break;
|
||||
}
|
||||
case BASE_TYPE_UNION:
|
||||
GetUnionField(struct_def, field, code_ptr);
|
||||
break;
|
||||
default:
|
||||
assert(0);
|
||||
}
|
||||
}
|
||||
if (field.value.type.base_type == BASE_TYPE_VECTOR) {
|
||||
GetVectorLen(struct_def, field, code_ptr);
|
||||
}
|
||||
}
|
||||
|
||||
// Generate table constructors, conditioned on its members' types.
|
||||
static void GenTableBuilders(const StructDef &struct_def,
|
||||
std::string *code_ptr) {
|
||||
GetStartOfTable(struct_def, code_ptr);
|
||||
|
||||
for (auto it = struct_def.fields.vec.begin();
|
||||
it != struct_def.fields.vec.end();
|
||||
++it) {
|
||||
auto &field = **it;
|
||||
if (field.deprecated) continue;
|
||||
|
||||
auto offset = it - struct_def.fields.vec.begin();
|
||||
BuildFieldOfTable(struct_def, field, offset, code_ptr);
|
||||
if (field.value.type.base_type == BASE_TYPE_VECTOR) {
|
||||
BuildVectorOfTable(struct_def, field, code_ptr);
|
||||
}
|
||||
}
|
||||
|
||||
GetEndOffsetOnTable(struct_def, code_ptr);
|
||||
}
|
||||
|
||||
// Generate struct or table methods.
|
||||
static void GenStruct(const StructDef &struct_def,
|
||||
std::string *code_ptr,
|
||||
StructDef *root_struct_def) {
|
||||
if (struct_def.generated) return;
|
||||
|
||||
Comment(struct_def.doc_comment, code_ptr);
|
||||
BeginClass(struct_def, code_ptr);
|
||||
if (&struct_def == root_struct_def) {
|
||||
// Generate a special accessor for the table that has been declared as
|
||||
// the root type.
|
||||
NewRootTypeFromBuffer(struct_def, code_ptr);
|
||||
}
|
||||
// Generate the Init method that sets the field in a pre-existing
|
||||
// accessor object. This is to allow object reuse.
|
||||
InitializeExisting(struct_def, code_ptr);
|
||||
for (auto it = struct_def.fields.vec.begin();
|
||||
it != struct_def.fields.vec.end();
|
||||
++it) {
|
||||
auto &field = **it;
|
||||
if (field.deprecated) continue;
|
||||
|
||||
GenStructAccessor(struct_def, field, code_ptr);
|
||||
}
|
||||
|
||||
if (struct_def.fixed) {
|
||||
// create a struct constructor function
|
||||
GenStructBuilder(struct_def, code_ptr);
|
||||
} else {
|
||||
// Create a set of functions that allow table construction.
|
||||
GenTableBuilders(struct_def, code_ptr);
|
||||
}
|
||||
}
|
||||
|
||||
// Generate enum declarations.
|
||||
static void GenEnum(const EnumDef &enum_def, std::string *code_ptr) {
|
||||
if (enum_def.generated) return;
|
||||
|
||||
Comment(enum_def.doc_comment, code_ptr);
|
||||
BeginEnum(code_ptr);
|
||||
for (auto it = enum_def.vals.vec.begin();
|
||||
it != enum_def.vals.vec.end();
|
||||
++it) {
|
||||
auto &ev = **it;
|
||||
Comment(ev.doc_comment, code_ptr, " ");
|
||||
EnumMember(enum_def, ev, code_ptr);
|
||||
}
|
||||
EndEnum(code_ptr);
|
||||
}
|
||||
|
||||
// Returns the function name that is able to read a value of the given type.
|
||||
static std::string GenGetter(const Type &type) {
|
||||
switch (type.base_type) {
|
||||
case BASE_TYPE_STRING: return "rcv._tab.String";
|
||||
case BASE_TYPE_UNION: return "rcv._tab.Union";
|
||||
case BASE_TYPE_VECTOR: return GenGetter(type.VectorType());
|
||||
default:
|
||||
return "rcv._tab.Get" + MakeCamel(GenTypeGet(type));
|
||||
}
|
||||
}
|
||||
|
||||
// Returns the method name for use with add/put calls.
|
||||
static std::string GenMethod(const FieldDef &field) {
|
||||
return IsScalar(field.value.type.base_type)
|
||||
? MakeCamel(GenTypeBasic(field.value.type))
|
||||
: (IsStruct(field.value.type) ? "Struct" : "UOffsetT");
|
||||
}
|
||||
|
||||
|
||||
// Save out the generated code for a Go Table type.
|
||||
static bool SaveType(const Parser &parser, const Definition &def,
|
||||
const std::string &classcode, const std::string &path,
|
||||
bool needs_imports) {
|
||||
if (!classcode.length()) return true;
|
||||
|
||||
std::string name_space_name;
|
||||
std::string name_space_dir = path;
|
||||
for (auto it = parser.name_space_.begin();
|
||||
it != parser.name_space_.end(); ++it) {
|
||||
if (name_space_name.length()) {
|
||||
name_space_name += ".";
|
||||
name_space_dir += PATH_SEPARATOR;
|
||||
}
|
||||
name_space_name = *it;
|
||||
name_space_dir += *it;
|
||||
mkdir(name_space_dir.c_str(), S_IRWXU|S_IRGRP|S_IXGRP|S_IROTH|S_IXOTH);
|
||||
}
|
||||
|
||||
|
||||
std::string code = "";
|
||||
BeginFile(name_space_name, needs_imports, &code);
|
||||
code += classcode;
|
||||
std::string filename = name_space_dir + PATH_SEPARATOR + def.name + ".go";
|
||||
return SaveFile(filename.c_str(), code, false);
|
||||
}
|
||||
|
||||
static std::string GenTypeBasic(const Type &type) {
|
||||
static const char *ctypename[] = {
|
||||
#define FLATBUFFERS_TD(ENUM, IDLTYPE, CTYPE, JTYPE, GTYPE) #GTYPE,
|
||||
FLATBUFFERS_GEN_TYPES(FLATBUFFERS_TD)
|
||||
#undef FLATBUFFERS_TD
|
||||
};
|
||||
return ctypename[type.base_type];
|
||||
}
|
||||
|
||||
static std::string GenTypePointer(const Type &type) {
|
||||
switch (type.base_type) {
|
||||
case BASE_TYPE_STRING:
|
||||
return "string";
|
||||
case BASE_TYPE_VECTOR:
|
||||
return GenTypeGet(type.VectorType());
|
||||
case BASE_TYPE_STRUCT:
|
||||
return type.struct_def->name;
|
||||
case BASE_TYPE_UNION:
|
||||
// fall through
|
||||
default:
|
||||
return "*flatbuffers.Table";
|
||||
}
|
||||
}
|
||||
|
||||
static std::string GenTypeGet(const Type &type) {
|
||||
return IsScalar(type.base_type)
|
||||
? GenTypeBasic(type)
|
||||
: GenTypePointer(type);
|
||||
}
|
||||
|
||||
static std::string TypeName(const FieldDef &field) {
|
||||
return GenTypeGet(field.value.type);
|
||||
}
|
||||
|
||||
// Create a struct with a builder and the struct's arguments.
|
||||
static void GenStructBuilder(const StructDef &struct_def,
|
||||
std::string *code_ptr) {
|
||||
BeginBuilderArgs(struct_def, code_ptr);
|
||||
StructBuilderArgs(struct_def, "", code_ptr);
|
||||
EndBuilderArgs(code_ptr);
|
||||
|
||||
StructBuilderBody(struct_def, "", code_ptr);
|
||||
EndBuilderBody(code_ptr);
|
||||
}
|
||||
|
||||
} // namespace go
|
||||
|
||||
bool GenerateGo(const Parser &parser,
|
||||
const std::string &path,
|
||||
const std::string & /*file_name*/,
|
||||
const GeneratorOptions & /*opts*/) {
|
||||
for (auto it = parser.enums_.vec.begin();
|
||||
it != parser.enums_.vec.end(); ++it) {
|
||||
std::string enumcode;
|
||||
go::GenEnum(**it, &enumcode);
|
||||
if (!go::SaveType(parser, **it, enumcode, path, false))
|
||||
return false;
|
||||
}
|
||||
|
||||
for (auto it = parser.structs_.vec.begin();
|
||||
it != parser.structs_.vec.end(); ++it) {
|
||||
std::string declcode;
|
||||
go::GenStruct(**it, &declcode, parser.root_struct_def);
|
||||
if (!go::SaveType(parser, **it, declcode, path, true))
|
||||
return false;
|
||||
}
|
||||
|
||||
return true;
|
||||
}
|
||||
|
||||
} // namespace flatbuffers
|
||||
|
||||
@@ -34,7 +34,7 @@ namespace java {
|
||||
|
||||
static std::string GenTypeBasic(const Type &type) {
|
||||
static const char *ctypename[] = {
|
||||
#define FLATBUFFERS_TD(ENUM, IDLTYPE, CTYPE, JTYPE) #JTYPE,
|
||||
#define FLATBUFFERS_TD(ENUM, IDLTYPE, CTYPE, JTYPE, GTYPE) #JTYPE,
|
||||
FLATBUFFERS_GEN_TYPES(FLATBUFFERS_TD)
|
||||
#undef FLATBUFFERS_TD
|
||||
};
|
||||
@@ -73,21 +73,6 @@ static void GenComment(const std::string &dc,
|
||||
}
|
||||
}
|
||||
|
||||
// Convert an underscore_based_indentifier in to camelCase.
|
||||
// Also uppercases the first character if first is true.
|
||||
static std::string MakeCamel(const std::string &in, bool first = true) {
|
||||
std::string s;
|
||||
for (size_t i = 0; i < in.length(); i++) {
|
||||
if (!i && first)
|
||||
s += static_cast<char>(toupper(in[0]));
|
||||
else if (in[i] == '_' && i + 1 < in.length())
|
||||
s += static_cast<char>(toupper(in[++i]));
|
||||
else
|
||||
s += in[i];
|
||||
}
|
||||
return s;
|
||||
}
|
||||
|
||||
static void GenEnum(EnumDef &enum_def, std::string *code_ptr) {
|
||||
std::string &code = *code_ptr;
|
||||
if (enum_def.generated) return;
|
||||
|
||||
@@ -140,7 +140,7 @@ template<> void Print<const void *>(const void *val,
|
||||
type = type.VectorType();
|
||||
// Call PrintVector above specifically for each element type:
|
||||
switch (type.base_type) {
|
||||
#define FLATBUFFERS_TD(ENUM, IDLTYPE, CTYPE, JTYPE) \
|
||||
#define FLATBUFFERS_TD(ENUM, IDLTYPE, CTYPE, JTYPE, GTYPE) \
|
||||
case BASE_TYPE_ ## ENUM: \
|
||||
PrintVector<CTYPE>( \
|
||||
*reinterpret_cast<const Vector<CTYPE> *>(val), \
|
||||
@@ -207,7 +207,7 @@ static void GenStruct(const StructDef &struct_def, const Table *table,
|
||||
OutputIdentifier(fd.name, opts, _text);
|
||||
text += ": ";
|
||||
switch (fd.value.type.base_type) {
|
||||
#define FLATBUFFERS_TD(ENUM, IDLTYPE, CTYPE, JTYPE) \
|
||||
#define FLATBUFFERS_TD(ENUM, IDLTYPE, CTYPE, JTYPE, GTYPE) \
|
||||
case BASE_TYPE_ ## ENUM: \
|
||||
GenField<CTYPE>(fd, table, struct_def.fixed, \
|
||||
opts, indent + opts.indent_step, _text); \
|
||||
@@ -215,7 +215,7 @@ static void GenStruct(const StructDef &struct_def, const Table *table,
|
||||
FLATBUFFERS_GEN_TYPES_SCALAR(FLATBUFFERS_TD)
|
||||
#undef FLATBUFFERS_TD
|
||||
// Generate drop-thru case statements for all pointer types:
|
||||
#define FLATBUFFERS_TD(ENUM, IDLTYPE, CTYPE, JTYPE) \
|
||||
#define FLATBUFFERS_TD(ENUM, IDLTYPE, CTYPE, JTYPE, GTYPE) \
|
||||
case BASE_TYPE_ ## ENUM:
|
||||
FLATBUFFERS_GEN_TYPES_POINTER(FLATBUFFERS_TD)
|
||||
#undef FLATBUFFERS_TD
|
||||
|
||||
@@ -23,14 +23,14 @@
|
||||
namespace flatbuffers {
|
||||
|
||||
const char *const kTypeNames[] = {
|
||||
#define FLATBUFFERS_TD(ENUM, IDLTYPE, CTYPE, JTYPE) IDLTYPE,
|
||||
#define FLATBUFFERS_TD(ENUM, IDLTYPE, CTYPE, JTYPE, GTYPE) IDLTYPE,
|
||||
FLATBUFFERS_GEN_TYPES(FLATBUFFERS_TD)
|
||||
#undef FLATBUFFERS_TD
|
||||
nullptr
|
||||
};
|
||||
|
||||
const char kTypeSizes[] = {
|
||||
#define FLATBUFFERS_TD(ENUM, IDLTYPE, CTYPE, JTYPE) sizeof(CTYPE),
|
||||
#define FLATBUFFERS_TD(ENUM, IDLTYPE, CTYPE, JTYPE, GTYPE) sizeof(CTYPE),
|
||||
FLATBUFFERS_GEN_TYPES(FLATBUFFERS_TD)
|
||||
#undef FLATBUFFERS_TD
|
||||
};
|
||||
@@ -86,7 +86,7 @@ enum {
|
||||
#define FLATBUFFERS_TOKEN(NAME, VALUE, STRING) kToken ## NAME = VALUE,
|
||||
FLATBUFFERS_GEN_TOKENS(FLATBUFFERS_TOKEN)
|
||||
#undef FLATBUFFERS_TOKEN
|
||||
#define FLATBUFFERS_TD(ENUM, IDLTYPE, CTYPE, JTYPE) kToken ## ENUM,
|
||||
#define FLATBUFFERS_TD(ENUM, IDLTYPE, CTYPE, JTYPE, GTYPE) kToken ## ENUM,
|
||||
FLATBUFFERS_GEN_TYPES(FLATBUFFERS_TD)
|
||||
#undef FLATBUFFERS_TD
|
||||
};
|
||||
@@ -96,7 +96,7 @@ static std::string TokenToString(int t) {
|
||||
#define FLATBUFFERS_TOKEN(NAME, VALUE, STRING) STRING,
|
||||
FLATBUFFERS_GEN_TOKENS(FLATBUFFERS_TOKEN)
|
||||
#undef FLATBUFFERS_TOKEN
|
||||
#define FLATBUFFERS_TD(ENUM, IDLTYPE, CTYPE, JTYPE) IDLTYPE,
|
||||
#define FLATBUFFERS_TD(ENUM, IDLTYPE, CTYPE, JTYPE, GTYPE) IDLTYPE,
|
||||
FLATBUFFERS_GEN_TYPES(FLATBUFFERS_TD)
|
||||
#undef FLATBUFFERS_TD
|
||||
};
|
||||
@@ -170,7 +170,7 @@ void Parser::Next() {
|
||||
attribute_.clear();
|
||||
attribute_.append(start, cursor_);
|
||||
// First, see if it is a type keyword from the table of types:
|
||||
#define FLATBUFFERS_TD(ENUM, IDLTYPE, CTYPE, JTYPE) \
|
||||
#define FLATBUFFERS_TD(ENUM, IDLTYPE, CTYPE, JTYPE, GTYPE) \
|
||||
if (attribute_ == IDLTYPE) { \
|
||||
token_ = kToken ## ENUM; \
|
||||
return; \
|
||||
@@ -429,7 +429,7 @@ uoffset_t Parser::ParseTable(const StructDef &struct_def) {
|
||||
auto field = it->second;
|
||||
if (!struct_def.sortbysize || size == SizeOf(value.type.base_type)) {
|
||||
switch (value.type.base_type) {
|
||||
#define FLATBUFFERS_TD(ENUM, IDLTYPE, CTYPE, JTYPE) \
|
||||
#define FLATBUFFERS_TD(ENUM, IDLTYPE, CTYPE, JTYPE, GTYPE) \
|
||||
case BASE_TYPE_ ## ENUM: \
|
||||
builder_.Pad(field->padding); \
|
||||
builder_.AddElement(value.offset, \
|
||||
@@ -438,7 +438,7 @@ uoffset_t Parser::ParseTable(const StructDef &struct_def) {
|
||||
break;
|
||||
FLATBUFFERS_GEN_TYPES_SCALAR(FLATBUFFERS_TD);
|
||||
#undef FLATBUFFERS_TD
|
||||
#define FLATBUFFERS_TD(ENUM, IDLTYPE, CTYPE, JTYPE) \
|
||||
#define FLATBUFFERS_TD(ENUM, IDLTYPE, CTYPE, JTYPE, GTYPE) \
|
||||
case BASE_TYPE_ ## ENUM: \
|
||||
builder_.Pad(field->padding); \
|
||||
if (IsStruct(field->value.type)) { \
|
||||
@@ -492,7 +492,7 @@ uoffset_t Parser::ParseVector(const Type &type) {
|
||||
// start at the back, since we're building the data backwards.
|
||||
auto &val = field_stack_.back().first;
|
||||
switch (val.type.base_type) {
|
||||
#define FLATBUFFERS_TD(ENUM, IDLTYPE, CTYPE, JTYPE) \
|
||||
#define FLATBUFFERS_TD(ENUM, IDLTYPE, CTYPE, JTYPE, GTYPE) \
|
||||
case BASE_TYPE_ ## ENUM: \
|
||||
if (IsStruct(val.type)) SerializeStruct(*val.type.struct_def, val); \
|
||||
else builder_.PushElement(atot<CTYPE>(val.constant.c_str())); \
|
||||
|
||||
Reference in New Issue
Block a user