| /* |
| * Copyright 2014 Google Inc. All rights reserved. |
| * |
| * 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 |
| * |
| * http://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. |
| */ |
| |
| // independent from idl_parser, since this code is not needed for most clients |
| #include <algorithm> |
| #include <cassert> |
| #include <unordered_map> |
| #include <unordered_set> |
| |
| #include "flatbuffers/code_generators.h" |
| #include "flatbuffers/flatbuffers.h" |
| #include "flatbuffers/idl.h" |
| #include "flatbuffers/util.h" |
| |
| namespace flatbuffers { |
| |
| struct JsTsLanguageParameters { |
| IDLOptions::Language language; |
| std::string file_extension; |
| }; |
| |
| struct ReexportDescription { |
| std::string symbol; |
| std::string source_namespace; |
| std::string target_namespace; |
| }; |
| |
| enum AnnotationType { kParam = 0, kType = 1, kReturns = 2 }; |
| |
| const JsTsLanguageParameters &GetJsLangParams(IDLOptions::Language lang) { |
| static JsTsLanguageParameters js_language_parameters[] = { |
| { |
| IDLOptions::kJs, |
| ".js", |
| }, |
| { |
| IDLOptions::kTs, |
| ".ts", |
| }, |
| }; |
| |
| if (lang == IDLOptions::kJs) { |
| return js_language_parameters[0]; |
| } else { |
| FLATBUFFERS_ASSERT(lang == IDLOptions::kTs); |
| return js_language_parameters[1]; |
| } |
| } |
| |
| namespace jsts { |
| // Iterate through all definitions we haven't generate code for (enums, structs, |
| // and tables) and output them to a single file. |
| class JsTsGenerator : public BaseGenerator { |
| public: |
| typedef std::unordered_set<std::string> imported_fileset; |
| typedef std::unordered_multimap<std::string, ReexportDescription> |
| reexport_map; |
| |
| JsTsGenerator(const Parser &parser, const std::string &path, |
| const std::string &file_name) |
| : BaseGenerator(parser, path, file_name, "", ".", |
| parser.opts.lang == IDLOptions::kJs ? "js" : "ts"), |
| lang_(GetJsLangParams(parser_.opts.lang)) {} |
| // Iterate through all definitions we haven't generate code for (enums, |
| // structs, and tables) and output them to a single file. |
| bool generate() { |
| imported_fileset imported_files; |
| reexport_map reexports; |
| |
| std::string enum_code, struct_code, import_code, exports_code, code; |
| generateEnums(&enum_code, &exports_code, reexports); |
| generateStructs(&struct_code, &exports_code, imported_files); |
| generateImportDependencies(&import_code, imported_files); |
| generateReexports(&import_code, reexports, imported_files); |
| |
| code = code + "// " + FlatBuffersGeneratedWarning() + "\n\n"; |
| |
| // Generate code for all the namespace declarations. |
| GenNamespaces(&code, &exports_code); |
| |
| // Output the main declaration code from above. |
| code += import_code; |
| |
| code += enum_code; |
| code += struct_code; |
| |
| if (lang_.language == IDLOptions::kJs && !exports_code.empty() && |
| !parser_.opts.skip_js_exports) { |
| if (parser_.opts.use_ES6_js_export_format) |
| code += "// Exports for ECMAScript6 Modules\n"; |
| else |
| code += "// Exports for Node.js and RequireJS\n"; |
| code += exports_code; |
| } |
| |
| return SaveFile(GeneratedFileName(path_, file_name_, parser_.opts).c_str(), |
| code, false); |
| } |
| |
| private: |
| JsTsLanguageParameters lang_; |
| |
| // Generate code for imports |
| void generateImportDependencies(std::string *code_ptr, |
| const imported_fileset &imported_files) { |
| std::string &code = *code_ptr; |
| for (auto it = imported_files.begin(); it != imported_files.end(); ++it) { |
| const auto &file = *it; |
| const auto basename = |
| flatbuffers::StripPath(flatbuffers::StripExtension(file)); |
| if (basename != file_name_) { code += GenPrefixedImport(file, basename); } |
| } |
| } |
| |
| // Generate reexports, which might not have been explicitly imported using the |
| // "export import" trick |
| void generateReexports(std::string *code_ptr, const reexport_map &reexports, |
| imported_fileset imported_files) { |
| if (!parser_.opts.reexport_ts_modules || |
| lang_.language != IDLOptions::kTs) { |
| return; |
| } |
| |
| std::unordered_set<std::string> imported; |
| |
| std::string &code = *code_ptr; |
| for (auto it = reexports.begin(); it != reexports.end(); ++it) { |
| const auto &file = *it; |
| const auto basename = |
| flatbuffers::StripPath(flatbuffers::StripExtension(file.first)); |
| if (basename != file_name_ && imported.find(file.second.symbol) == imported.end()) { |
| if (imported_files.find(file.first) == imported_files.end()) { |
| code += GenPrefixedImport(file.first, basename); |
| imported_files.emplace(file.first); |
| } |
| |
| if (!file.second.target_namespace.empty()) { |
| code += "export namespace " + file.second.target_namespace + " { \n"; |
| } |
| code += "export import " + file.second.symbol + " = "; |
| code += GenFileNamespacePrefix(file.first) + "."; |
| if (!file.second.source_namespace.empty()) { |
| code += file.second.source_namespace + "."; |
| } |
| code += file.second.symbol + ";\n"; |
| if (!file.second.target_namespace.empty()) { code += "}\n"; } |
| |
| imported.emplace(file.second.symbol); |
| } |
| } |
| } |
| |
| // Generate code for all enums. |
| void generateEnums(std::string *enum_code_ptr, std::string *exports_code_ptr, |
| reexport_map &reexports) { |
| for (auto it = parser_.enums_.vec.begin(); it != parser_.enums_.vec.end(); |
| ++it) { |
| auto &enum_def = **it; |
| GenEnum(enum_def, enum_code_ptr, exports_code_ptr, reexports, false); |
| GenEnum(enum_def, enum_code_ptr, exports_code_ptr, reexports, true); |
| } |
| } |
| |
| // Generate code for all structs. |
| void generateStructs(std::string *decl_code_ptr, |
| std::string *exports_code_ptr, |
| imported_fileset &imported_files) { |
| for (auto it = parser_.structs_.vec.begin(); |
| it != parser_.structs_.vec.end(); ++it) { |
| auto &struct_def = **it; |
| GenStruct(parser_, struct_def, decl_code_ptr, exports_code_ptr, |
| imported_files); |
| } |
| } |
| void GenNamespaces(std::string *code_ptr, std::string *exports_ptr) { |
| if (lang_.language == IDLOptions::kTs && |
| parser_.opts.skip_flatbuffers_import) { |
| return; |
| } |
| |
| std::set<std::string> namespaces; |
| |
| for (auto it = parser_.namespaces_.begin(); it != parser_.namespaces_.end(); |
| ++it) { |
| std::string namespace_so_far; |
| |
| // Gather all parent namespaces for this namespace |
| for (auto component = (*it)->components.begin(); |
| component != (*it)->components.end(); ++component) { |
| if (!namespace_so_far.empty()) { namespace_so_far += '.'; } |
| namespace_so_far += *component; |
| namespaces.insert(namespace_so_far); |
| } |
| } |
| |
| // Make sure parent namespaces come before child namespaces |
| std::vector<std::string> sorted_namespaces(namespaces.begin(), |
| namespaces.end()); |
| std::sort(sorted_namespaces.begin(), sorted_namespaces.end()); |
| |
| // Emit namespaces in a form that Closure Compiler can optimize |
| std::string &code = *code_ptr; |
| std::string &exports = *exports_ptr; |
| for (auto it = sorted_namespaces.begin(); it != sorted_namespaces.end(); |
| ++it) { |
| if (lang_.language == IDLOptions::kTs) { |
| if (it->find('.') == std::string::npos) { |
| code += "import * as flatbuffers from 'flatbuffers';\n"; |
| break; |
| } |
| } else { |
| code += "/**\n * @const\n * @namespace\n */\n"; |
| if (it->find('.') == std::string::npos) { |
| code += "var "; |
| if (parser_.opts.use_goog_js_export_format) { |
| exports += "goog.exportSymbol('" + *it + "', " + *it + ");\n"; |
| } else if (parser_.opts.use_ES6_js_export_format) { |
| exports += "export {" + *it + "};\n"; |
| } else { |
| exports += "this." + *it + " = " + *it + ";\n"; |
| } |
| } |
| code += *it + " = " + *it + " || {};\n\n"; |
| } |
| } |
| } |
| |
| // Generate a documentation comment, if available. |
| static void GenDocComment(const std::vector<std::string> &dc, |
| std::string *code_ptr, |
| const std::string &extra_lines, |
| const char *indent = nullptr) { |
| if (dc.empty() && extra_lines.empty()) { |
| // Don't output empty comment blocks with 0 lines of comment content. |
| return; |
| } |
| |
| std::string &code = *code_ptr; |
| if (indent) code += indent; |
| code += "/**\n"; |
| for (auto it = dc.begin(); it != dc.end(); ++it) { |
| if (indent) code += indent; |
| code += " *" + *it + "\n"; |
| } |
| if (!extra_lines.empty()) { |
| if (!dc.empty()) { |
| if (indent) code += indent; |
| code += " *\n"; |
| } |
| if (indent) code += indent; |
| std::string::size_type start = 0; |
| for (;;) { |
| auto end = extra_lines.find('\n', start); |
| if (end != std::string::npos) { |
| code += " * " + extra_lines.substr(start, end - start) + "\n"; |
| start = end + 1; |
| } else { |
| code += " * " + extra_lines.substr(start) + "\n"; |
| break; |
| } |
| } |
| } |
| if (indent) code += indent; |
| code += " */\n"; |
| } |
| |
| static void GenDocComment(std::string *code_ptr, |
| const std::string &extra_lines) { |
| GenDocComment(std::vector<std::string>(), code_ptr, extra_lines); |
| } |
| |
| std::string GenTypeAnnotation(AnnotationType annotation_type, |
| const std::string &type_name, |
| const std::string &arg_name, |
| bool include_newline = true) { |
| std::string result = ""; |
| switch (annotation_type) { |
| case kParam: { |
| result += "@param"; |
| break; |
| } |
| case kType: { |
| if (lang_.language != IDLOptions::kTs) { |
| result += "@type"; |
| } else { |
| return ""; |
| } |
| break; |
| } |
| case kReturns: { |
| result += "@returns"; |
| break; |
| } |
| } |
| switch (lang_.language) { |
| case IDLOptions::kTs: { |
| result += " " + type_name; |
| break; |
| } |
| default: { |
| result += " {" + type_name + "}"; |
| } |
| } |
| if (!arg_name.empty()) { result += " " + arg_name; } |
| if (include_newline) { result += "\n"; } |
| |
| return result; |
| } |
| |
| // Generate an enum declaration and an enum string lookup table. |
| void GenEnum(EnumDef &enum_def, std::string *code_ptr, |
| std::string *exports_ptr, reexport_map &reexports, |
| bool reverse) { |
| if (enum_def.generated) return; |
| if (reverse && lang_.language == IDLOptions::kTs) return; // FIXME. |
| std::string &code = *code_ptr; |
| std::string &exports = *exports_ptr; |
| GenDocComment(enum_def.doc_comment, code_ptr, |
| reverse ? "@enum {string}" : "@enum {number}"); |
| std::string ns = GetNameSpace(enum_def); |
| std::string enum_def_name = enum_def.name + (reverse ? "Name" : ""); |
| if (lang_.language == IDLOptions::kTs) { |
| if (!ns.empty()) { code += "export namespace " + ns + "{\n"; } |
| code += "export enum " + enum_def.name + "{\n"; |
| } else { |
| if (enum_def.defined_namespace->components.empty()) { |
| code += "var "; |
| if (parser_.opts.use_goog_js_export_format) { |
| exports += "goog.exportSymbol('" + enum_def_name + "', " + |
| enum_def.name + ");\n"; |
| } else if (parser_.opts.use_ES6_js_export_format) { |
| exports += "export {" + enum_def_name + "};\n"; |
| } else { |
| exports += "this." + enum_def_name + " = " + enum_def_name + ";\n"; |
| } |
| } |
| code += WrapInNameSpace(enum_def) + (reverse ? "Name" : "") + " = {\n"; |
| } |
| for (auto it = enum_def.Vals().begin(); it != enum_def.Vals().end(); ++it) { |
| auto &ev = **it; |
| if (!ev.doc_comment.empty()) { |
| if (it != enum_def.Vals().begin()) { code += '\n'; } |
| GenDocComment(ev.doc_comment, code_ptr, "", " "); |
| } |
| |
| // Generate mapping between EnumName: EnumValue(int) |
| if (reverse) { |
| code += " '" + enum_def.ToString(ev) + "'"; |
| code += lang_.language == IDLOptions::kTs ? "= " : ": "; |
| code += "'" + ev.name + "'"; |
| } else { |
| code += " " + ev.name; |
| code += lang_.language == IDLOptions::kTs ? "= " : ": "; |
| code += enum_def.ToString(ev); |
| } |
| |
| code += (it + 1) != enum_def.Vals().end() ? ",\n" : "\n"; |
| |
| if (ev.union_type.struct_def) { |
| ReexportDescription desc = { ev.union_type.struct_def->name, |
| GetNameSpace(*ev.union_type.struct_def), |
| GetNameSpace(enum_def) }; |
| reexports.insert( |
| std::make_pair(ev.union_type.struct_def->file, std::move(desc))); |
| } |
| } |
| code += "};"; |
| |
| if (lang_.language == IDLOptions::kTs) { |
| if (enum_def.is_union) { |
| code += GenUnionConvFunc(enum_def.underlying_type); |
| } |
| if (!ns.empty()) { code += "\n}"; } |
| } |
| |
| code += "\n\n"; |
| } |
| |
| static std::string GenType(const Type &type) { |
| switch (type.base_type) { |
| case BASE_TYPE_BOOL: |
| case BASE_TYPE_CHAR: return "Int8"; |
| case BASE_TYPE_UTYPE: |
| case BASE_TYPE_UCHAR: return "Uint8"; |
| case BASE_TYPE_SHORT: return "Int16"; |
| case BASE_TYPE_USHORT: return "Uint16"; |
| case BASE_TYPE_INT: return "Int32"; |
| case BASE_TYPE_UINT: return "Uint32"; |
| case BASE_TYPE_LONG: return "Int64"; |
| case BASE_TYPE_ULONG: return "Uint64"; |
| case BASE_TYPE_FLOAT: return "Float32"; |
| case BASE_TYPE_DOUBLE: return "Float64"; |
| case BASE_TYPE_STRING: return "String"; |
| case BASE_TYPE_VECTOR: return GenType(type.VectorType()); |
| case BASE_TYPE_STRUCT: return type.struct_def->name; |
| default: return "Table"; |
| } |
| } |
| |
| std::string GenGetter(const Type &type, const std::string &arguments) { |
| switch (type.base_type) { |
| case BASE_TYPE_STRING: return GenBBAccess() + ".__string" + arguments; |
| case BASE_TYPE_STRUCT: return GenBBAccess() + ".__struct" + arguments; |
| case BASE_TYPE_UNION: |
| if (!UnionHasStringType(*type.enum_def) || |
| lang_.language == IDLOptions::kJs) { |
| return GenBBAccess() + ".__union" + arguments; |
| } |
| return GenBBAccess() + ".__union_with_string" + arguments; |
| case BASE_TYPE_VECTOR: return GenGetter(type.VectorType(), arguments); |
| default: { |
| auto getter = |
| GenBBAccess() + ".read" + MakeCamel(GenType(type)) + arguments; |
| if (type.base_type == BASE_TYPE_BOOL) { getter = "!!" + getter; } |
| if (type.enum_def) { |
| getter = "/** " + |
| GenTypeAnnotation(kType, WrapInNameSpace(*type.enum_def), "", |
| false) + |
| " */ (" + getter + ")"; |
| } |
| return getter; |
| } |
| } |
| } |
| |
| std::string GenBBAccess() { |
| return lang_.language == IDLOptions::kTs ? "this.bb!" : "this.bb"; |
| } |
| |
| std::string GenDefaultValue(const Value &value, const std::string &context) { |
| if (value.type.enum_def && value.type.base_type != BASE_TYPE_UNION && |
| value.type.base_type != BASE_TYPE_VECTOR) { |
| if (auto val = value.type.enum_def->FindByValue(value.constant)) { |
| if (lang_.language == IDLOptions::kTs) { |
| return GenPrefixedTypeName(WrapInNameSpace(*value.type.enum_def), |
| value.type.enum_def->file) + |
| "." + val->name; |
| } else { |
| return WrapInNameSpace(*value.type.enum_def) + "." + val->name; |
| } |
| } else { |
| return "/** " + |
| GenTypeAnnotation(kType, WrapInNameSpace(*value.type.enum_def), |
| "", false) + |
| "} */ (" + value.constant + ")"; |
| } |
| } |
| |
| switch (value.type.base_type) { |
| case BASE_TYPE_BOOL: return value.constant == "0" ? "false" : "true"; |
| |
| case BASE_TYPE_STRING: |
| case BASE_TYPE_UNION: |
| case BASE_TYPE_STRUCT: { |
| return "null"; |
| } |
| |
| case BASE_TYPE_VECTOR: return "[]"; |
| |
| case BASE_TYPE_LONG: |
| case BASE_TYPE_ULONG: { |
| int64_t constant = StringToInt(value.constant.c_str()); |
| return context + ".createLong(" + |
| NumToString(static_cast<int32_t>(constant)) + ", " + |
| NumToString(static_cast<int32_t>(constant >> 32)) + ")"; |
| } |
| |
| default: return value.constant; |
| } |
| } |
| |
| std::string GenTypeName(const Type &type, bool input, |
| bool allowNull = false) { |
| if (!input) { |
| if (type.base_type == BASE_TYPE_STRING || |
| type.base_type == BASE_TYPE_STRUCT) { |
| std::string name; |
| if (type.base_type == BASE_TYPE_STRING) { |
| name = "string|Uint8Array"; |
| } else { |
| name = WrapInNameSpace(*type.struct_def); |
| } |
| return (allowNull) ? (name + "|null") : (name); |
| } |
| } |
| |
| switch (type.base_type) { |
| case BASE_TYPE_BOOL: return "boolean"; |
| case BASE_TYPE_LONG: |
| case BASE_TYPE_ULONG: return "flatbuffers.Long"; |
| default: |
| if (IsScalar(type.base_type)) { |
| if (type.enum_def) { return WrapInNameSpace(*type.enum_def); } |
| return "number"; |
| } |
| return "flatbuffers.Offset"; |
| } |
| } |
| |
| // Returns the method name for use with add/put calls. |
| static std::string GenWriteMethod(const Type &type) { |
| // Forward to signed versions since unsigned versions don't exist |
| switch (type.base_type) { |
| case BASE_TYPE_UTYPE: |
| case BASE_TYPE_UCHAR: return GenWriteMethod(Type(BASE_TYPE_CHAR)); |
| case BASE_TYPE_USHORT: return GenWriteMethod(Type(BASE_TYPE_SHORT)); |
| case BASE_TYPE_UINT: return GenWriteMethod(Type(BASE_TYPE_INT)); |
| case BASE_TYPE_ULONG: return GenWriteMethod(Type(BASE_TYPE_LONG)); |
| default: break; |
| } |
| |
| return IsScalar(type.base_type) ? MakeCamel(GenType(type)) |
| : (IsStruct(type) ? "Struct" : "Offset"); |
| } |
| |
| template<typename T> static std::string MaybeAdd(T value) { |
| return value != 0 ? " + " + NumToString(value) : ""; |
| } |
| |
| template<typename T> static std::string MaybeScale(T value) { |
| return value != 1 ? " * " + NumToString(value) : ""; |
| } |
| |
| static std::string GenFileNamespacePrefix(const std::string &file) { |
| return "NS" + std::to_string(HashFnv1a<uint64_t>(file.c_str())); |
| } |
| |
| std::string GenPrefixedImport(const std::string &full_file_name, |
| const std::string &base_name) { |
| // Either keep the include path as it was |
| // or use only the base_name + kGeneratedFileNamePostfix |
| std::string path; |
| if (parser_.opts.keep_include_path) { |
| auto it = parser_.included_files_.find(full_file_name); |
| FLATBUFFERS_ASSERT(it != parser_.included_files_.end()); |
| path = flatbuffers::StripExtension(it->second) + |
| parser_.opts.filename_suffix; |
| } else { |
| path = base_name + parser_.opts.filename_suffix; |
| } |
| |
| // Add the include prefix and make the path always relative |
| path = flatbuffers::ConCatPathFileName(parser_.opts.include_prefix, path); |
| path = std::string(".") + kPathSeparator + path; |
| |
| return "import * as " + GenFileNamespacePrefix(full_file_name) + |
| " from \"" + path + "\";\n"; |
| } |
| |
| // Adds a source-dependent prefix, for of import * statements. |
| std::string GenPrefixedTypeName(const std::string &typeName, |
| const std::string &file) { |
| const auto basename = |
| flatbuffers::StripPath(flatbuffers::StripExtension(file)); |
| if (basename == file_name_ || parser_.opts.generate_all) { |
| return typeName; |
| } |
| return GenFileNamespacePrefix(file) + "." + typeName; |
| } |
| |
| std::string GenFullNameSpace(const Definition &def, const std::string &file) { |
| return GenPrefixedTypeName(GetNameSpace(def), file); |
| } |
| |
| void GenStructArgs(const StructDef &struct_def, std::string *annotations, |
| std::string *arguments, const std::string &nameprefix) { |
| for (auto it = struct_def.fields.vec.begin(); |
| it != struct_def.fields.vec.end(); ++it) { |
| auto &field = **it; |
| if (IsStruct(field.value.type)) { |
| // Generate arguments for a struct inside a struct. To ensure names |
| // don't clash, and to make it obvious these arguments are constructing |
| // a nested struct, prefix the name with the field name. |
| GenStructArgs(*field.value.type.struct_def, annotations, arguments, |
| nameprefix + field.name + "_"); |
| } else { |
| *annotations += |
| GenTypeAnnotation(kParam, GenTypeName(field.value.type, true), |
| nameprefix + field.name); |
| if (lang_.language == IDLOptions::kTs) { |
| *arguments += ", " + nameprefix + field.name + ": " + |
| GenTypeName(field.value.type, true); |
| } else { |
| *arguments += ", " + nameprefix + field.name; |
| } |
| } |
| } |
| } |
| |
| static void GenStructBody(const StructDef &struct_def, std::string *body, |
| const std::string &nameprefix) { |
| *body += " builder.prep("; |
| *body += NumToString(struct_def.minalign) + ", "; |
| *body += NumToString(struct_def.bytesize) + ");\n"; |
| |
| for (auto it = struct_def.fields.vec.rbegin(); |
| it != struct_def.fields.vec.rend(); ++it) { |
| auto &field = **it; |
| if (field.padding) { |
| *body += " builder.pad(" + NumToString(field.padding) + ");\n"; |
| } |
| if (IsStruct(field.value.type)) { |
| // Generate arguments for a struct inside a struct. To ensure names |
| // don't clash, and to make it obvious these arguments are constructing |
| // a nested struct, prefix the name with the field name. |
| GenStructBody(*field.value.type.struct_def, body, |
| nameprefix + field.name + "_"); |
| } else { |
| *body += " builder.write" + GenWriteMethod(field.value.type) + "("; |
| if (field.value.type.base_type == BASE_TYPE_BOOL) { *body += "+"; } |
| *body += nameprefix + field.name + ");\n"; |
| } |
| } |
| } |
| |
| std::string GenerateNewExpression(const std::string &object_name) { |
| return "new " + object_name + |
| (lang_.language == IDLOptions::kTs ? "()" : ""); |
| } |
| |
| void GenerateRootAccessor(StructDef &struct_def, std::string *code_ptr, |
| std::string &code, std::string &object_name, |
| bool size_prefixed) { |
| if (!struct_def.fixed) { |
| GenDocComment(code_ptr, |
| GenTypeAnnotation(kParam, "flatbuffers.ByteBuffer", "bb") + |
| GenTypeAnnotation(kParam, object_name + "=", "obj") + |
| GenTypeAnnotation(kReturns, object_name, "", false)); |
| std::string sizePrefixed("SizePrefixed"); |
| if (lang_.language == IDLOptions::kTs) { |
| code += "static get" + (size_prefixed ? sizePrefixed : "") + "Root" + |
| Verbose(struct_def, "As"); |
| code += "(bb:flatbuffers.ByteBuffer, obj?:" + object_name + |
| "):" + object_name + " {\n"; |
| } else { |
| code += object_name + ".get" + (size_prefixed ? sizePrefixed : "") + |
| "Root" + Verbose(struct_def, "As"); |
| code += " = function(bb, obj) {\n"; |
| } |
| if (size_prefixed) { |
| code += |
| " bb.setPosition(bb.position() + " |
| "flatbuffers.SIZE_PREFIX_LENGTH);\n"; |
| } |
| code += " return (obj || " + GenerateNewExpression(object_name); |
| code += ").__init(bb.readInt32(bb.position()) + bb.position(), bb);\n"; |
| code += "};\n\n"; |
| } |
| } |
| |
| void GenerateFinisher(StructDef &struct_def, std::string *code_ptr, |
| std::string &code, std::string &object_name, |
| bool size_prefixed) { |
| if (parser_.root_struct_def_ == &struct_def) { |
| std::string sizePrefixed("SizePrefixed"); |
| GenDocComment( |
| code_ptr, |
| GenTypeAnnotation(kParam, "flatbuffers.Builder", "builder") + |
| GenTypeAnnotation(kParam, "flatbuffers.Offset", "offset", false)); |
| |
| if (lang_.language == IDLOptions::kTs) { |
| code += "static finish" + (size_prefixed ? sizePrefixed : "") + |
| Verbose(struct_def) + "Buffer"; |
| code += "(builder:flatbuffers.Builder, offset:flatbuffers.Offset) {\n"; |
| } else { |
| code += object_name + ".finish" + (size_prefixed ? sizePrefixed : "") + |
| Verbose(struct_def) + "Buffer"; |
| code += " = function(builder, offset) {\n"; |
| } |
| |
| code += " builder.finish(offset"; |
| if (!parser_.file_identifier_.empty()) { |
| code += ", '" + parser_.file_identifier_ + "'"; |
| } |
| if (size_prefixed) { |
| if (parser_.file_identifier_.empty()) { code += ", undefined"; } |
| code += ", true"; |
| } |
| code += ");\n"; |
| code += "};\n\n"; |
| } |
| } |
| |
| static std::string GetObjApiClassName(const StructDef &sd, |
| const IDLOptions &opts) { |
| return GetObjApiClassName(sd.name, opts); |
| } |
| |
| static std::string GetObjApiClassName(const std::string &name, |
| const IDLOptions &opts) { |
| return opts.object_prefix + name + opts.object_suffix; |
| } |
| |
| bool UnionHasStringType(const EnumDef &union_enum) { |
| return std::any_of(union_enum.Vals().begin(), union_enum.Vals().end(), |
| [](const EnumVal *ev) { |
| return !(ev->IsZero()) && |
| (ev->union_type.base_type == BASE_TYPE_STRING); |
| }); |
| } |
| |
| std::string GenUnionGenericTypeTS(const EnumDef &union_enum) { |
| return std::string("T") + (UnionHasStringType(union_enum) ? "|string" : ""); |
| } |
| |
| std::string GenUnionTypeTS(const EnumDef &union_enum) { |
| std::string ret; |
| std::set<std::string> type_list; |
| |
| for (auto it = union_enum.Vals().begin(); it != union_enum.Vals().end(); |
| ++it) { |
| const auto &ev = **it; |
| if (ev.IsZero()) { continue; } |
| |
| std::string type = ""; |
| if (ev.union_type.base_type == BASE_TYPE_STRING) { |
| type = "string"; // no need to wrap string type in namespace |
| } else if (ev.union_type.base_type == BASE_TYPE_STRUCT) { |
| type = GenPrefixedTypeName(WrapInNameSpace(*(ev.union_type.struct_def)), |
| union_enum.file); |
| } else { |
| FLATBUFFERS_ASSERT(false); |
| } |
| type_list.insert(type); |
| } |
| |
| for (auto it = type_list.begin(); it != type_list.end(); ++it) { |
| ret += *it + ((std::next(it) == type_list.end()) ? "" : "|"); |
| } |
| |
| return ret; |
| } |
| |
| // Generate a TS union type based on a union's enum |
| std::string GenObjApiUnionTypeTS(const IDLOptions &opts, |
| const EnumDef &union_enum) { |
| std::string ret = ""; |
| std::set<std::string> type_list; |
| |
| for (auto it = union_enum.Vals().begin(); it != union_enum.Vals().end(); |
| ++it) { |
| const auto &ev = **it; |
| if (ev.IsZero()) { continue; } |
| |
| std::string type = ""; |
| if (ev.union_type.base_type == BASE_TYPE_STRING) { |
| type = "string"; // no need to wrap string type in namespace |
| } else if (ev.union_type.base_type == BASE_TYPE_STRUCT) { |
| type = GenPrefixedTypeName( |
| GetObjApiClassName(WrapInNameSpace(*(ev.union_type.struct_def)), |
| opts), |
| union_enum.file); |
| } else { |
| FLATBUFFERS_ASSERT(false); |
| } |
| type_list.insert(type); |
| } |
| |
| size_t totalPrinted = 0; |
| for (auto it = type_list.begin(); it != type_list.end(); ++it) { |
| ++totalPrinted; |
| ret += *it + ((totalPrinted == type_list.size()) ? "" : "|"); |
| } |
| |
| return ret; |
| } |
| |
| std::string GenUnionConvFuncName(const EnumDef &enum_def) { |
| return "unionTo" + enum_def.name; |
| } |
| |
| std::string GenUnionListConvFuncName(const EnumDef &enum_def) { |
| return "unionListTo" + enum_def.name; |
| } |
| |
| std::string GenUnionConvFunc(const Type &union_type) { |
| if (union_type.enum_def) { |
| const auto &enum_def = *union_type.enum_def; |
| |
| const auto valid_union_type = GenUnionTypeTS(enum_def); |
| const auto valid_union_type_with_null = valid_union_type + "|null"; |
| |
| auto ret = "\n\nexport function " + GenUnionConvFuncName(enum_def) + |
| "(\n type: " + enum_def.name + |
| ",\n accessor: (obj:" + valid_union_type + ") => " + |
| valid_union_type_with_null + |
| "\n): " + valid_union_type_with_null + " {\n"; |
| |
| const auto enum_type = GenPrefixedTypeName( |
| WrapInNameSpace(*(union_type.enum_def)), union_type.enum_def->file); |
| const auto &union_enum = *(union_type.enum_def); |
| |
| const auto union_enum_loop = [&](const std::string &accessor_str) { |
| ret += " switch(" + enum_type + "[type]) {\n"; |
| ret += " case 'NONE': return null; \n"; |
| |
| for (auto it = union_enum.Vals().begin(); it != union_enum.Vals().end(); |
| ++it) { |
| const auto &ev = **it; |
| if (ev.IsZero()) { continue; } |
| |
| ret += " case '" + ev.name + "': "; |
| |
| if (ev.union_type.base_type == BASE_TYPE_STRING) { |
| ret += "return " + accessor_str + "'') as string;"; |
| } else if (ev.union_type.base_type == BASE_TYPE_STRUCT) { |
| const auto type = GenPrefixedTypeName( |
| WrapInNameSpace(*(ev.union_type.struct_def)), union_enum.file); |
| ret += "return " + accessor_str + "new " + type + "())! as " + |
| type + ";"; |
| } else { |
| FLATBUFFERS_ASSERT(false); |
| } |
| ret += "\n"; |
| } |
| |
| ret += " default: return null;\n"; |
| ret += " }\n"; |
| }; |
| |
| union_enum_loop("accessor("); |
| ret += "}"; |
| |
| ret += "\n\nexport function " + GenUnionListConvFuncName(enum_def) + |
| "(\n type: " + enum_def.name + |
| ", \n accessor: (index: number, obj:" + valid_union_type + |
| ") => " + valid_union_type_with_null + |
| ", \n index: number\n): " + valid_union_type_with_null + " {\n"; |
| union_enum_loop("accessor(index, "); |
| ret += "}"; |
| |
| return ret; |
| } |
| FLATBUFFERS_ASSERT(0); |
| return ""; |
| } |
| |
| // Used for generating a short function that returns the correct class |
| // based on union enum type. Assume the context is inside the non object api |
| // type |
| std::string GenUnionValTS(const std::string &field_name, |
| const Type &union_type, |
| const bool is_array = false) { |
| if (union_type.enum_def) { |
| const auto &enum_def = *union_type.enum_def; |
| const auto enum_type = |
| GenPrefixedTypeName(WrapInNameSpace(enum_def), enum_def.file); |
| const std::string union_accessor = "this." + field_name; |
| |
| const auto union_has_string = UnionHasStringType(enum_def); |
| const auto field_binded_method = "this." + field_name + ".bind(this)"; |
| |
| std::string ret = ""; |
| |
| if (!is_array) { |
| const auto conversion_function = |
| GenPrefixedTypeName(WrapInNameSpace(enum_def.defined_namespace, |
| GenUnionConvFuncName(enum_def)), |
| enum_def.file); |
| const auto target_enum = "this." + field_name + "Type()"; |
| |
| ret = "(() => {\n"; |
| ret += " let temp = " + conversion_function + "(" + target_enum + |
| ", " + field_binded_method + ");\n"; |
| ret += " if(temp === null) { return null; }\n"; |
| ret += union_has_string |
| ? " if(typeof temp === 'string') { return temp; }\n" |
| : ""; |
| ret += " return temp.unpack()\n"; |
| ret += " })()"; |
| } else { |
| const auto conversion_function = GenPrefixedTypeName( |
| WrapInNameSpace(enum_def.defined_namespace, |
| GenUnionListConvFuncName(enum_def)), |
| enum_def.file); |
| const auto target_enum_accesor = "this." + field_name + "Type"; |
| const auto target_enum_length = target_enum_accesor + "Length()"; |
| |
| ret = "(() => {\n"; |
| ret += " let ret = [];\n"; |
| ret += " for(let targetEnumIndex = 0; targetEnumIndex < " + |
| target_enum_length + |
| "; " |
| "++targetEnumIndex) {\n"; |
| ret += " let targetEnum = " + target_enum_accesor + |
| "(targetEnumIndex);\n"; |
| ret += " if(targetEnum === null || " + enum_type + |
| "[targetEnum!] === 'NONE') { " |
| "continue; }\n\n"; |
| ret += " let temp = " + conversion_function + "(targetEnum, " + |
| field_binded_method + ", targetEnumIndex);\n"; |
| ret += " if(temp === null) { continue; }\n"; |
| ret += union_has_string ? " if(typeof temp === 'string') { " |
| "ret.push(temp); continue; }\n" |
| : ""; |
| ret += " ret.push(temp.unpack());\n"; |
| ret += " }\n"; |
| ret += " return ret;\n"; |
| ret += " })()"; |
| } |
| |
| return ret; |
| } |
| |
| FLATBUFFERS_ASSERT(0); |
| return ""; |
| } |
| |
| std::string GenNullCheckConditional(const std::string &nullCheckVar, |
| const std::string &trueVal, |
| const std::string &falseVal = "null") { |
| return "(" + nullCheckVar + " !== null ? " + trueVal + " : " + falseVal + |
| ")"; |
| } |
| |
| std::string GenStructMemberValueTS(const StructDef &struct_def, |
| const std::string &prefix, |
| const std::string &delimiter, |
| const bool nullCheck = true) { |
| std::string ret; |
| for (auto it = struct_def.fields.vec.begin(); |
| it != struct_def.fields.vec.end(); ++it) { |
| auto &field = **it; |
| |
| const auto curr_member_accessor = |
| prefix + "." + MakeCamel(field.name, false); |
| if (IsStruct(field.value.type)) { |
| ret += GenStructMemberValueTS(*field.value.type.struct_def, |
| curr_member_accessor, delimiter); |
| } else { |
| if (nullCheck) { |
| ret += |
| "(" + prefix + " === null ? 0 : " + curr_member_accessor + "!)"; |
| } else { |
| ret += curr_member_accessor; |
| } |
| } |
| |
| if (std::next(it) != struct_def.fields.vec.end()) { ret += delimiter; } |
| } |
| |
| return ret; |
| } |
| |
| void GenObjApi(const Parser &parser, StructDef &struct_def, |
| std::string &obj_api_unpack_func, std::string &obj_api_class) { |
| const auto class_name = GetObjApiClassName(struct_def, parser.opts); |
| |
| std::string unpack_func = |
| "\n/**\n * " + GenTypeAnnotation(kReturns, class_name, "") + |
| " */\nunpack(): " + class_name + " {\n return new " + class_name + |
| "(" + (struct_def.fields.vec.empty() ? "" : "\n"); |
| std::string unpack_to_func = |
| "/**\n * " + GenTypeAnnotation(kParam, class_name, "_o") + |
| " */\nunpackTo(_o: " + class_name + "): void {" + |
| +(struct_def.fields.vec.empty() ? "" : "\n"); |
| |
| std::string constructor_annotation = "/**\n * @constructor"; |
| constructor_annotation += (struct_def.fields.vec.empty() ? "" : "\n"); |
| std::string constructor_func = "constructor("; |
| constructor_func += (struct_def.fields.vec.empty() ? "" : "\n"); |
| |
| |
| const auto has_create = struct_def.fixed || CanCreateFactoryMethod(struct_def); |
| |
| std::string pack_func_prototype = |
| "/**\n * " + |
| GenTypeAnnotation(kParam, "flatbuffers.Builder", "builder") + " * " + |
| GenTypeAnnotation(kReturns, "flatbuffers.Offset", "") + |
| " */\npack(builder:flatbuffers.Builder): flatbuffers.Offset {\n"; |
| |
| std::string pack_func_offset_decl; |
| std::string pack_func_create_call; |
| |
| const auto struct_name = GenPrefixedTypeName(WrapInNameSpace(struct_def), struct_def.file); |
| |
| if (has_create) { |
| pack_func_create_call = |
| " return " + |
| struct_name + |
| ".create" + Verbose(struct_def) + "(builder" + |
| (struct_def.fields.vec.empty() ? "" : ",\n "); |
| } else { |
| pack_func_create_call = " " + struct_name + ".start(builder);\n"; |
| } |
| |
| if (struct_def.fixed) { |
| // when packing struct, nested struct's members instead of the struct's |
| // offset are used |
| pack_func_create_call += |
| GenStructMemberValueTS(struct_def, "this", ",\n ", false) + "\n "; |
| } |
| |
| for (auto it = struct_def.fields.vec.begin(); |
| it != struct_def.fields.vec.end(); ++it) { |
| auto &field = **it; |
| if (field.deprecated) continue; |
| |
| const auto field_name = MakeCamel(field.name, false); |
| const std::string field_binded_method = |
| "this." + field_name + ".bind(this)"; |
| |
| std::string field_val; |
| std::string field_type; |
| // a string that declares a variable containing the |
| // offset for things that can't be generated inline |
| // empty otw |
| std::string field_offset_decl; |
| // a string that contains values for things that can be created inline or |
| // the variable name from field_offset_decl |
| std::string field_offset_val; |
| const auto field_default_val = |
| GenDefaultValue(field.value, "flatbuffers"); |
| |
| // Emit a scalar field |
| if (IsScalar(field.value.type.base_type) || |
| field.value.type.base_type == BASE_TYPE_STRING) { |
| if (field.value.type.enum_def) { |
| field_type += |
| GenPrefixedTypeName(GenTypeName(field.value.type, false, true), |
| field.value.type.enum_def->file); |
| } else { |
| field_type += GenTypeName(field.value.type, false, true); |
| } |
| field_val = "this." + field_name + "()"; |
| |
| if (field.value.type.base_type != BASE_TYPE_STRING) { |
| field_offset_val = "this." + field_name; |
| } else { |
| field_offset_decl = GenNullCheckConditional( |
| "this." + field_name, |
| "builder.createString(this." + field_name + "!)", "0"); |
| } |
| } |
| |
| // Emit an object field |
| else { |
| auto is_vector = false; |
| switch (field.value.type.base_type) { |
| case BASE_TYPE_STRUCT: { |
| const auto &sd = *field.value.type.struct_def; |
| field_type += GenPrefixedTypeName( |
| WrapInNameSpace(sd.defined_namespace, |
| GetObjApiClassName(sd, parser.opts)), |
| field.value.type.struct_def->file); |
| |
| const std::string field_accessor = "this." + field_name + "()"; |
| field_val = GenNullCheckConditional(field_accessor, |
| field_accessor + "!.unpack()"); |
| field_offset_val = GenNullCheckConditional( |
| "this." + field_name, "this." + field_name + "!.pack(builder)", |
| "0"); |
| |
| break; |
| } |
| |
| case BASE_TYPE_VECTOR: { |
| auto vectortype = field.value.type.VectorType(); |
| auto vectortypename = GenTypeName(vectortype, false); |
| is_vector = true; |
| |
| field_type = "("; |
| |
| switch (vectortype.base_type) { |
| case BASE_TYPE_STRUCT: { |
| const auto &sd = *field.value.type.struct_def; |
| field_type += GenPrefixedTypeName( |
| WrapInNameSpace(sd.defined_namespace, |
| GetObjApiClassName(sd, parser.opts)), |
| field.value.type.struct_def->file); |
| field_type += ")[]"; |
| |
| field_val = GenBBAccess() + ".createObjList(" + |
| field_binded_method + ", this." + field_name + |
| "Length())"; |
| |
| if (sd.fixed) { |
| field_offset_decl = |
| "builder.createStructOffsetList(this." + field_name + |
| ", " + |
| GenPrefixedTypeName(WrapInNameSpace(struct_def), |
| struct_def.file) + |
| ".start" + MakeCamel(field_name) + "Vector)"; |
| } else { |
| field_offset_decl = |
| GenPrefixedTypeName(WrapInNameSpace(struct_def), |
| struct_def.file) + |
| ".create" + MakeCamel(field_name) + |
| "Vector(builder, builder.createObjectOffsetList(" + |
| "this." + field_name + "))"; |
| } |
| |
| break; |
| } |
| |
| case BASE_TYPE_STRING: { |
| field_type += "string)[]"; |
| field_val = GenBBAccess() + ".createStringList(" + |
| field_binded_method + ", this." + field_name + |
| "Length())"; |
| field_offset_decl = |
| GenPrefixedTypeName(WrapInNameSpace(struct_def), |
| struct_def.file) + |
| ".create" + MakeCamel(field_name) + |
| "Vector(builder, builder.createObjectOffsetList(" + |
| "this." + field_name + "))"; |
| break; |
| } |
| |
| case BASE_TYPE_UNION: { |
| field_type += |
| GenObjApiUnionTypeTS(parser.opts, *(vectortype.enum_def)); |
| field_type += ")[]"; |
| field_val = GenUnionValTS(field_name, vectortype, true); |
| |
| field_offset_decl = |
| GenPrefixedTypeName(WrapInNameSpace(struct_def), |
| struct_def.file) + |
| ".create" + MakeCamel(field_name) + |
| "Vector(builder, builder.createObjectOffsetList(" + |
| "this." + field_name + "))"; |
| |
| break; |
| } |
| default: { |
| if (vectortype.enum_def) { |
| field_type += |
| GenPrefixedTypeName(GenTypeName(vectortype, false, true), |
| vectortype.enum_def->file); |
| } else { |
| field_type += vectortypename; |
| } |
| field_type += ")[]"; |
| field_val = GenBBAccess() + ".createScalarList(" + |
| field_binded_method + ", this." + field_name + |
| "Length())"; |
| |
| field_offset_decl = |
| GenPrefixedTypeName(WrapInNameSpace(struct_def), |
| struct_def.file) + |
| ".create" + MakeCamel(field_name) + |
| "Vector(builder, this." + field_name + ")"; |
| |
| break; |
| } |
| } |
| |
| break; |
| } |
| |
| case BASE_TYPE_UNION: { |
| field_type += |
| GenObjApiUnionTypeTS(parser.opts, *(field.value.type.enum_def)); |
| |
| field_val = GenUnionValTS(field_name, field.value.type); |
| field_offset_decl = |
| "builder.createObjectOffset(this." + field_name + ")"; |
| break; |
| } |
| |
| default: FLATBUFFERS_ASSERT(0); break; |
| } |
| |
| // length 0 vector is simply empty instead of null |
| field_type += is_vector ? "" : "|null"; |
| } |
| |
| if (!field_offset_decl.empty()) { |
| field_offset_decl = |
| " const " + field_name + " = " + field_offset_decl + ";"; |
| } |
| if (field_offset_val.empty()) { field_offset_val = field_name; } |
| |
| unpack_func += " " + field_val; |
| unpack_to_func += " _o." + field_name + " = " + field_val + ";"; |
| |
| constructor_annotation += |
| " * " + GenTypeAnnotation(kParam, field_type, field_name, false); |
| constructor_func += " public " + field_name + ": " + field_type + " = " + |
| field_default_val; |
| |
| if (!struct_def.fixed) { |
| if (!field_offset_decl.empty()) { |
| pack_func_offset_decl += field_offset_decl + "\n"; |
| } |
| |
| if (has_create) { |
| pack_func_create_call += field_offset_val; |
| } else { |
| pack_func_create_call += " " + struct_name + ".add" + MakeCamel(field.name) + "(builder, " + field_offset_val + ");\n"; |
| } |
| } |
| |
| if (std::next(it) != struct_def.fields.vec.end()) { |
| constructor_annotation += "\n"; |
| constructor_func += ",\n"; |
| |
| if (!struct_def.fixed && has_create) { pack_func_create_call += ",\n "; } |
| |
| unpack_func += ",\n"; |
| unpack_to_func += "\n"; |
| } else { |
| constructor_func += "\n"; |
| if (!struct_def.fixed) { |
| pack_func_offset_decl += (pack_func_offset_decl.empty() ? "" : "\n"); |
| pack_func_create_call += "\n "; |
| } |
| |
| unpack_func += "\n "; |
| unpack_to_func += "\n"; |
| } |
| } |
| |
| constructor_annotation += "\n */\n"; |
| constructor_func += "){};\n\n"; |
| |
| if (has_create) { |
| pack_func_create_call += ");"; |
| } else { |
| pack_func_create_call += "return " + struct_name + ".end(builder);"; |
| } |
| |
| obj_api_class = "\nexport class " + |
| GetObjApiClassName(struct_def, parser.opts) + " {\n"; |
| |
| obj_api_class += constructor_annotation + constructor_func; |
| |
| obj_api_class += pack_func_prototype + pack_func_offset_decl + |
| pack_func_create_call + "\n};"; |
| |
| obj_api_class += "\n}\n"; |
| |
| unpack_func += ");\n};"; |
| unpack_to_func += "};\n"; |
| |
| obj_api_unpack_func = unpack_func + "\n\n" + unpack_to_func; |
| } |
| |
| bool CanCreateFactoryMethod(const StructDef &struct_def) { |
| // to preserve backwards compatibility, we allow the first field to be a |
| // struct |
| return struct_def.fields.vec.size() < 2 || |
| std::all_of(std::begin(struct_def.fields.vec) + 1, |
| std::end(struct_def.fields.vec), |
| [](const FieldDef *f) -> bool { |
| FLATBUFFERS_ASSERT(f != nullptr); |
| return f->value.type.base_type != BASE_TYPE_STRUCT; |
| }); |
| } |
| |
| // Generate an accessor struct with constructor for a flatbuffers struct. |
| void GenStruct(const Parser &parser, StructDef &struct_def, |
| std::string *code_ptr, std::string *exports_ptr, |
| imported_fileset &imported_files) { |
| if (struct_def.generated) return; |
| std::string &code = *code_ptr; |
| std::string &exports = *exports_ptr; |
| |
| std::string object_name; |
| std::string object_namespace = GetNameSpace(struct_def); |
| |
| // Emit constructor |
| if (lang_.language == IDLOptions::kTs) { |
| object_name = struct_def.name; |
| GenDocComment(struct_def.doc_comment, code_ptr, "@constructor"); |
| if (!object_namespace.empty()) { |
| code += "export namespace " + object_namespace + "{\n"; |
| } |
| code += "export class " + struct_def.name; |
| code += " {\n"; |
| if (lang_.language != IDLOptions::kTs) { |
| code += " /**\n"; |
| code += |
| " * " + GenTypeAnnotation(kType, "flatbuffers.ByteBuffer", ""); |
| code += " */\n"; |
| } |
| code += " bb: flatbuffers.ByteBuffer|null = null;\n"; |
| code += "\n"; |
| if (lang_.language != IDLOptions::kTs) { |
| code += " /**\n"; |
| code += " * " + GenTypeAnnotation(kType, "number", ""); |
| code += " */\n"; |
| } |
| code += " bb_pos:number = 0;\n"; |
| } else { |
| bool isStatement = struct_def.defined_namespace->components.empty(); |
| object_name = WrapInNameSpace(struct_def); |
| GenDocComment(struct_def.doc_comment, code_ptr, "@constructor"); |
| if (isStatement) { |
| if (parser_.opts.use_goog_js_export_format) { |
| exports += "goog.exportSymbol('" + struct_def.name + "', " + |
| struct_def.name + ");\n"; |
| } else if (parser_.opts.use_ES6_js_export_format) { |
| exports += "export {" + struct_def.name + "};\n"; |
| } else { |
| exports += |
| "this." + struct_def.name + " = " + struct_def.name + ";\n"; |
| } |
| code += "function " + object_name; |
| } else { |
| code += object_name + " = function"; |
| } |
| code += "() {\n"; |
| code += " /**\n"; |
| code += " * " + GenTypeAnnotation(kType, "flatbuffers.ByteBuffer", ""); |
| code += " */\n"; |
| code += " this.bb = null;\n"; |
| code += "\n"; |
| code += " /**\n"; |
| code += " * " + GenTypeAnnotation(kType, "number", ""); |
| code += " */\n"; |
| code += " this.bb_pos = 0;\n"; |
| code += isStatement ? "}\n\n" : "};\n\n"; |
| } |
| |
| // Generate the __init method that sets the field in a pre-existing |
| // accessor object. This is to allow object reuse. |
| code += "/**\n"; |
| code += " * " + GenTypeAnnotation(kParam, "number", "i"); |
| code += " * " + GenTypeAnnotation(kParam, "flatbuffers.ByteBuffer", "bb"); |
| code += " * " + GenTypeAnnotation(kReturns, object_name, ""); |
| code += " */\n"; |
| |
| if (lang_.language == IDLOptions::kTs) { |
| code += |
| "__init(i:number, bb:flatbuffers.ByteBuffer):" + object_name + " {\n"; |
| } else { |
| code += object_name + ".prototype.__init = function(i, bb) {\n"; |
| } |
| |
| code += " this.bb_pos = i;\n"; |
| code += " this.bb = bb;\n"; |
| code += " return this;\n"; |
| code += "};\n\n"; |
| |
| // Generate special accessors for the table that when used as the root of a |
| // FlatBuffer |
| GenerateRootAccessor(struct_def, code_ptr, code, object_name, false); |
| GenerateRootAccessor(struct_def, code_ptr, code, object_name, true); |
| |
| // Generate the identifier check method |
| if (!struct_def.fixed && parser_.root_struct_def_ == &struct_def && |
| !parser_.file_identifier_.empty()) { |
| GenDocComment(code_ptr, |
| GenTypeAnnotation(kParam, "flatbuffers.ByteBuffer", "bb") + |
| GenTypeAnnotation(kReturns, "boolean", "", false)); |
| if (lang_.language == IDLOptions::kTs) { |
| code += |
| "static bufferHasIdentifier(bb:flatbuffers.ByteBuffer):boolean " |
| "{\n"; |
| } else { |
| code += object_name + ".bufferHasIdentifier = function(bb) {\n"; |
| } |
| |
| code += " return bb.__has_identifier('" + parser_.file_identifier_; |
| code += "');\n};\n\n"; |
| } |
| |
| // Emit field accessors |
| for (auto it = struct_def.fields.vec.begin(); |
| it != struct_def.fields.vec.end(); ++it) { |
| auto &field = **it; |
| if (field.deprecated) continue; |
| auto offset_prefix = |
| " var offset = " + GenBBAccess() + ".__offset(this.bb_pos, " + |
| NumToString(field.value.offset) + ");\n return offset ? "; |
| |
| // Emit a scalar field |
| if (IsScalar(field.value.type.base_type) || |
| field.value.type.base_type == BASE_TYPE_STRING) { |
| GenDocComment( |
| field.doc_comment, code_ptr, |
| std::string(field.value.type.base_type == BASE_TYPE_STRING |
| ? GenTypeAnnotation(kParam, "flatbuffers.Encoding=", |
| "optionalEncoding") |
| : "") + |
| GenTypeAnnotation(kReturns, |
| GenTypeName(field.value.type, false, true), |
| "", false)); |
| if (lang_.language == IDLOptions::kTs) { |
| std::string prefix = MakeCamel(field.name, false) + "("; |
| if (field.value.type.base_type == BASE_TYPE_STRING) { |
| code += prefix + "):string|null\n"; |
| code += prefix + "optionalEncoding:flatbuffers.Encoding" + |
| "):" + GenTypeName(field.value.type, false, true) + "\n"; |
| code += prefix + "optionalEncoding?:any"; |
| } else { |
| code += prefix; |
| } |
| if (field.value.type.enum_def) { |
| code += |
| "):" + |
| GenPrefixedTypeName(GenTypeName(field.value.type, false, true), |
| field.value.type.enum_def->file) + |
| " {\n"; |
| |
| if (!parser_.opts.generate_all) { |
| imported_files.insert(field.value.type.enum_def->file); |
| } |
| } else { |
| code += "):" + GenTypeName(field.value.type, false, true) + " {\n"; |
| } |
| } else { |
| code += object_name + ".prototype." + MakeCamel(field.name, false); |
| code += " = function("; |
| if (field.value.type.base_type == BASE_TYPE_STRING) { |
| code += "optionalEncoding"; |
| } |
| code += ") {\n"; |
| } |
| |
| if (struct_def.fixed) { |
| code += |
| " return " + |
| GenGetter(field.value.type, |
| "(this.bb_pos" + MaybeAdd(field.value.offset) + ")") + |
| ";\n"; |
| } else { |
| std::string index = "this.bb_pos + offset"; |
| if (field.value.type.base_type == BASE_TYPE_STRING) { |
| index += ", optionalEncoding"; |
| } |
| code += offset_prefix + |
| GenGetter(field.value.type, "(" + index + ")") + " : " + |
| GenDefaultValue(field.value, GenBBAccess()); |
| code += ";\n"; |
| } |
| } |
| |
| // Emit an object field |
| else { |
| switch (field.value.type.base_type) { |
| case BASE_TYPE_STRUCT: { |
| auto type = WrapInNameSpace(*field.value.type.struct_def); |
| GenDocComment( |
| field.doc_comment, code_ptr, |
| GenTypeAnnotation(kParam, type + "=", "obj") + |
| GenTypeAnnotation(kReturns, type + "|null", "", false)); |
| if (lang_.language == IDLOptions::kTs) { |
| type = |
| GenPrefixedTypeName(type, field.value.type.struct_def->file); |
| code += MakeCamel(field.name, false); |
| code += "(obj?:" + type + "):" + type + "|null {\n"; |
| } else { |
| code += |
| object_name + ".prototype." + MakeCamel(field.name, false); |
| code += " = function(obj) {\n"; |
| } |
| |
| if (struct_def.fixed) { |
| code += " return (obj || " + GenerateNewExpression(type); |
| code += ").__init(this.bb_pos"; |
| code += |
| MaybeAdd(field.value.offset) + ", " + GenBBAccess() + ");\n"; |
| } else { |
| code += offset_prefix + "(obj || " + GenerateNewExpression(type) + |
| ").__init("; |
| code += field.value.type.struct_def->fixed |
| ? "this.bb_pos + offset" |
| : GenBBAccess() + ".__indirect(this.bb_pos + offset)"; |
| code += ", " + GenBBAccess() + ") : null;\n"; |
| } |
| |
| if (lang_.language == IDLOptions::kTs && |
| !parser_.opts.generate_all) { |
| imported_files.insert(field.value.type.struct_def->file); |
| } |
| |
| break; |
| } |
| |
| case BASE_TYPE_VECTOR: { |
| auto vectortype = field.value.type.VectorType(); |
| auto vectortypename = GenTypeName(vectortype, false); |
| auto inline_size = InlineSize(vectortype); |
| auto index = GenBBAccess() + |
| ".__vector(this.bb_pos + offset) + index" + |
| MaybeScale(inline_size); |
| std::string args = GenTypeAnnotation(kParam, "number", "index"); |
| std::string ret_type; |
| bool is_union = false; |
| switch (vectortype.base_type) { |
| case BASE_TYPE_STRUCT: |
| args += GenTypeAnnotation(kParam, vectortypename + "=", "obj"); |
| ret_type = vectortypename; |
| break; |
| case BASE_TYPE_STRING: |
| args += GenTypeAnnotation( |
| kParam, "flatbuffers.Encoding=", "optionalEncoding"); |
| ret_type = vectortypename; |
| break; |
| case BASE_TYPE_UNION: |
| args += GenTypeAnnotation(kParam, "flatbuffers.Table=", "obj"); |
| ret_type = "?flatbuffers.Table"; |
| is_union = true; |
| break; |
| default: ret_type = vectortypename; |
| } |
| GenDocComment( |
| field.doc_comment, code_ptr, |
| args + GenTypeAnnotation(kReturns, ret_type, "", false)); |
| if (lang_.language == IDLOptions::kTs) { |
| std::string prefix = MakeCamel(field.name, false); |
| if (is_union) { prefix += "<T extends flatbuffers.Table>"; } |
| prefix += "(index: number"; |
| if (is_union) { |
| const auto union_type = |
| GenUnionGenericTypeTS(*(field.value.type.enum_def)); |
| |
| vectortypename = union_type; |
| code += prefix + ", obj:" + union_type; |
| } else if (vectortype.base_type == BASE_TYPE_STRUCT) { |
| vectortypename = GenPrefixedTypeName( |
| vectortypename, vectortype.struct_def->file); |
| code += prefix + ", obj?:" + vectortypename; |
| |
| if (!parser_.opts.generate_all) { |
| imported_files.insert(vectortype.struct_def->file); |
| } |
| } else if (vectortype.base_type == BASE_TYPE_STRING) { |
| code += prefix + "):string\n"; |
| code += prefix + ",optionalEncoding:flatbuffers.Encoding" + |
| "):" + vectortypename + "\n"; |
| code += prefix + ",optionalEncoding?:any"; |
| } else { |
| code += prefix; |
| } |
| code += "):" + vectortypename + "|null {\n"; |
| } else { |
| code += |
| object_name + ".prototype." + MakeCamel(field.name, false); |
| code += " = function(index"; |
| if (vectortype.base_type == BASE_TYPE_STRUCT || is_union) { |
| code += ", obj"; |
| } else if (vectortype.base_type == BASE_TYPE_STRING) { |
| code += ", optionalEncoding"; |
| } |
| code += ") {\n"; |
| } |
| |
| if (vectortype.base_type == BASE_TYPE_STRUCT) { |
| code += offset_prefix + "(obj || " + |
| GenerateNewExpression(vectortypename); |
| code += ").__init("; |
| code += vectortype.struct_def->fixed |
| ? index |
| : GenBBAccess() + ".__indirect(" + index + ")"; |
| code += ", " + GenBBAccess() + ")"; |
| } else { |
| if (is_union) { |
| index = "obj, " + index; |
| } else if (vectortype.base_type == BASE_TYPE_STRING) { |
| index += ", optionalEncoding"; |
| } |
| code += offset_prefix + GenGetter(vectortype, "(" + index + ")"); |
| } |
| code += " : "; |
| if (field.value.type.element == BASE_TYPE_BOOL) { |
| code += "false"; |
| } else if (field.value.type.element == BASE_TYPE_LONG || |
| field.value.type.element == BASE_TYPE_ULONG) { |
| code += GenBBAccess() + ".createLong(0, 0)"; |
| } else if (IsScalar(field.value.type.element)) { |
| if (field.value.type.enum_def) { |
| code += "/** " + |
| GenTypeAnnotation( |
| kType, WrapInNameSpace(*field.value.type.enum_def), |
| "", false) + |
| " */ (" + field.value.constant + ")"; |
| } else { |
| code += "0"; |
| } |
| } else { |
| code += "null"; |
| } |
| code += ";\n"; |
| break; |
| } |
| |
| case BASE_TYPE_UNION: |
| GenDocComment( |
| field.doc_comment, code_ptr, |
| GenTypeAnnotation(kParam, "flatbuffers.Table", "obj") + |
| GenTypeAnnotation(kReturns, "?flatbuffers.Table", "", |
| false)); |
| if (lang_.language == IDLOptions::kTs) { |
| code += MakeCamel(field.name, false); |
| |
| const auto &union_enum = *(field.value.type.enum_def); |
| const auto union_type = GenUnionGenericTypeTS(union_enum); |
| code += "<T extends flatbuffers.Table>(obj:" + union_type + |
| "):" + union_type + |
| "|null " |
| "{\n"; |
| } else { |
| code += |
| object_name + ".prototype." + MakeCamel(field.name, false); |
| code += " = function(obj) {\n"; |
| } |
| |
| code += offset_prefix + |
| GenGetter(field.value.type, "(obj, this.bb_pos + offset)") + |
| " : null;\n"; |
| break; |
| |
| default: FLATBUFFERS_ASSERT(0); |
| } |
| } |
| code += "};\n\n"; |
| |
| if (parser_.opts.use_goog_js_export_format) { |
| exports += "goog.exportProperty(" + object_name + ".prototype, '" + |
| MakeCamel(field.name, false) + "', " + object_name + |
| ".prototype." + MakeCamel(field.name, false) + ");\n"; |
| } |
| |
| // Adds the mutable scalar value to the output |
| if (IsScalar(field.value.type.base_type) && parser.opts.mutable_buffer && |
| !IsUnion(field.value.type)) { |
| std::string annotations = GenTypeAnnotation( |
| kParam, GenTypeName(field.value.type, true), "value"); |
| GenDocComment( |
| code_ptr, |
| annotations + GenTypeAnnotation(kReturns, "boolean", "", false)); |
| |
| if (lang_.language == IDLOptions::kTs) { |
| std::string type; |
| if (field.value.type.enum_def) { |
| type = GenPrefixedTypeName(GenTypeName(field.value.type, true), |
| field.value.type.enum_def->file); |
| } else { |
| type = GenTypeName(field.value.type, true); |
| } |
| |
| code += "mutate_" + field.name + "(value:" + type + "):boolean {\n"; |
| } else { |
| code += object_name + ".prototype.mutate_" + field.name + |
| " = function(value) {\n"; |
| } |
| |
| if (struct_def.fixed) { |
| code += " " + GenBBAccess() + ".write" + |
| MakeCamel(GenType(field.value.type)) + |
| "(this.bb_pos + " + NumToString(field.value.offset) + ", "; |
| } else { |
| code += " var offset = " + GenBBAccess() + ".__offset(this.bb_pos, " + |
| NumToString(field.value.offset) + ");\n\n"; |
| code += " if (offset === 0) {\n"; |
| code += " return false;\n"; |
| code += " }\n\n"; |
| |
| // special case for bools, which are treated as uint8 |
| code += " " + GenBBAccess() + ".write" + |
| MakeCamel(GenType(field.value.type)) + |
| "(this.bb_pos + offset, "; |
| if (field.value.type.base_type == BASE_TYPE_BOOL && |
| lang_.language == IDLOptions::kTs) { |
| code += "+"; |
| } |
| } |
| |
| code += "value);\n"; |
| code += " return true;\n"; |
| code += "};\n\n"; |
| |
| if (parser_.opts.use_goog_js_export_format) { |
| exports += "goog.exportProperty(" + object_name + |
| ".prototype, 'mutate_" + field.name + "', " + object_name + |
| ".prototype.mutate_" + field.name + ");\n"; |
| } |
| } |
| |
| // Emit vector helpers |
| if (field.value.type.base_type == BASE_TYPE_VECTOR) { |
| // Emit a length helper |
| GenDocComment(code_ptr, |
| GenTypeAnnotation(kReturns, "number", "", false)); |
| if (lang_.language == IDLOptions::kTs) { |
| code += MakeCamel(field.name, false); |
| code += "Length():number {\n" + offset_prefix; |
| } else { |
| code += object_name + ".prototype." + MakeCamel(field.name, false); |
| code += "Length = function() {\n" + offset_prefix; |
| } |
| |
| code += |
| GenBBAccess() + ".__vector_len(this.bb_pos + offset) : 0;\n};\n\n"; |
| |
| if (parser_.opts.use_goog_js_export_format) { |
| exports += "goog.exportProperty(" + object_name + ".prototype, '" + |
| MakeCamel(field.name, false) + "Length', " + object_name + |
| ".prototype." + MakeCamel(field.name, false) + |
| "Length);\n"; |
| } |
| |
| // For scalar types, emit a typed array helper |
| auto vectorType = field.value.type.VectorType(); |
| if (IsScalar(vectorType.base_type) && !IsLong(vectorType.base_type)) { |
| GenDocComment(code_ptr, GenTypeAnnotation( |
| kReturns, GenType(vectorType) + "Array", |
| "", false)); |
| |
| if (lang_.language == IDLOptions::kTs) { |
| code += MakeCamel(field.name, false); |
| code += "Array():" + GenType(vectorType) + "Array|null {\n" + |
| offset_prefix; |
| } else { |
| code += object_name + ".prototype." + MakeCamel(field.name, false); |
| code += "Array = function() {\n" + offset_prefix; |
| } |
| |
| code += "new " + GenType(vectorType) + "Array(" + GenBBAccess() + |
| ".bytes().buffer, " + GenBBAccess() + |
| ".bytes().byteOffset + " + GenBBAccess() + |
| ".__vector(this.bb_pos + offset), " + GenBBAccess() + |
| ".__vector_len(this.bb_pos + offset)) : null;\n};\n\n"; |
| |
| if (parser_.opts.use_goog_js_export_format) { |
| exports += "goog.exportProperty(" + object_name + ".prototype, '" + |
| MakeCamel(field.name, false) + "Array', " + object_name + |
| ".prototype." + MakeCamel(field.name, false) + |
| "Array);\n"; |
| } |
| } |
| } |
| } |
| |
| // Emit a factory constructor |
| if (struct_def.fixed) { |
| std::string annotations = |
| GenTypeAnnotation(kParam, "flatbuffers.Builder", "builder"); |
| std::string arguments; |
| GenStructArgs(struct_def, &annotations, &arguments, ""); |
| GenDocComment(code_ptr, annotations + GenTypeAnnotation( |
| kReturns, "flatbuffers.Offset", |
| "", false)); |
| |
| if (lang_.language == IDLOptions::kTs) { |
| code += "static create" + Verbose(struct_def) + |
| "(builder:flatbuffers.Builder"; |
| code += arguments + "):flatbuffers.Offset {\n"; |
| } else { |
| code += object_name + ".create" + Verbose(struct_def); |
| code += " = function(builder"; |
| code += arguments + ") {\n"; |
| } |
| |
| GenStructBody(struct_def, &code, ""); |
| code += " return builder.offset();\n};\n\n"; |
| } else { |
| // Generate a method to start building a new object |
| GenDocComment(code_ptr, GenTypeAnnotation(kParam, "flatbuffers.Builder", |
| "builder", false)); |
| |
| if (lang_.language == IDLOptions::kTs) { |
| code += "static start" + Verbose(struct_def) + |
| "(builder:flatbuffers.Builder) {\n"; |
| } else { |
| code += object_name + ".start" + Verbose(struct_def); |
| code += " = function(builder) {\n"; |
| } |
| |
| code += " builder.startObject(" + |
| NumToString(struct_def.fields.vec.size()) + ");\n"; |
| code += "};\n\n"; |
| |
| // Generate a set of static methods that allow table construction |
| for (auto it = struct_def.fields.vec.begin(); |
| it != struct_def.fields.vec.end(); ++it) { |
| auto &field = **it; |
| if (field.deprecated) continue; |
| const auto argname = GetArgName(field); |
| |
| // Generate the field insertion method |
| GenDocComment( |
| code_ptr, |
| GenTypeAnnotation(kParam, "flatbuffers.Builder", "builder") + |
| GenTypeAnnotation(kParam, GenTypeName(field.value.type, true), |
| argname, false)); |
| |
| if (lang_.language == IDLOptions::kTs) { |
| code += "static add" + MakeCamel(field.name); |
| code += "(builder:flatbuffers.Builder, " + argname + ":" + |
| GetArgType(field) + ") {\n"; |
| } else { |
| code += object_name + ".add" + MakeCamel(field.name); |
| code += " = function(builder, " + argname + ") {\n"; |
| } |
| |
| code += " builder.addField" + GenWriteMethod(field.value.type) + "("; |
| code += NumToString(it - struct_def.fields.vec.begin()) + ", "; |
| if (field.value.type.base_type == BASE_TYPE_BOOL) { code += "+"; } |
| code += argname + ", "; |
| if (!IsScalar(field.value.type.base_type)) { |
| code += "0"; |
| } else { |
| if (field.value.type.base_type == BASE_TYPE_BOOL) { code += "+"; } |
| code += GenDefaultValue(field.value, "builder"); |
| } |
| code += ");\n};\n\n"; |
| |
| if (field.value.type.base_type == BASE_TYPE_VECTOR) { |
| auto vector_type = field.value.type.VectorType(); |
| auto alignment = InlineAlignment(vector_type); |
| auto elem_size = InlineSize(vector_type); |
| |
| // Generate a method to create a vector from a JavaScript array |
| if (!IsStruct(vector_type)) { |
| GenDocComment( |
| code_ptr, |
| GenTypeAnnotation(kParam, "flatbuffers.Builder", "builder") + |
| GenTypeAnnotation( |
| kParam, |
| "Array.<" + GenTypeName(vector_type, true) + ">", |
| "data") + |
| GenTypeAnnotation(kReturns, "flatbuffers.Offset", "", |
| false)); |
| |
| if (lang_.language == IDLOptions::kTs) { |
| const std::string sig_begin = |
| "static create" + MakeCamel(field.name) + |
| "Vector(builder:flatbuffers.Builder, data:"; |
| const std::string sig_end = "):flatbuffers.Offset"; |
| std::string type = GenTypeName(vector_type, true) + "[]"; |
| if (type == "number[]") { |
| const auto &array_type = GenType(vector_type); |
| // the old type should be deprecated in the future |
| std::string type_old = "number[]|Uint8Array"; |
| std::string type_new = "number[]|" + array_type + "Array"; |
| if (type_old == type_new) { |
| type = type_new; |
| } else { |
| // add function overloads |
| code += sig_begin + type_new + sig_end + ";\n"; |
| code += |
| "/**\n * @deprecated This Uint8Array overload will " |
| "be removed in the future.\n */\n"; |
| code += sig_begin + type_old + sig_end + ";\n"; |
| type = type_new + "|Uint8Array"; |
| } |
| } |
| code += sig_begin + type + sig_end + " {\n"; |
| } else { |
| code += object_name + ".create" + MakeCamel(field.name); |
| code += "Vector = function(builder, data) {\n"; |
| } |
| |
| code += " builder.startVector(" + NumToString(elem_size); |
| code += ", data.length, " + NumToString(alignment) + ");\n"; |
| code += " for (var i = data.length - 1; i >= 0; i--) {\n"; |
| code += " builder.add" + GenWriteMethod(vector_type) + "("; |
| if (vector_type.base_type == BASE_TYPE_BOOL) { code += "+"; } |
| code += "data[i]);\n"; |
| code += " }\n"; |
| code += " return builder.endVector();\n"; |
| code += "};\n\n"; |
| } |
| |
| // Generate a method to start a vector, data to be added manually |
| // after |
| GenDocComment( |
| code_ptr, |
| GenTypeAnnotation(kParam, "flatbuffers.Builder", "builder") + |
| GenTypeAnnotation(kParam, "number", "numElems", false)); |
| |
| if (lang_.language == IDLOptions::kTs) { |
| code += "static start" + MakeCamel(field.name); |
| code += "Vector(builder:flatbuffers.Builder, numElems:number) {\n"; |
| } else { |
| code += object_name + ".start" + MakeCamel(field.name); |
| code += "Vector = function(builder, numElems) {\n"; |
| } |
| |
| code += " builder.startVector(" + NumToString(elem_size); |
| code += ", numElems, " + NumToString(alignment) + ");\n"; |
| code += "};\n\n"; |
| } |
| } |
| |
| // Generate a method to stop building a new object |
| GenDocComment( |
| code_ptr, |
| GenTypeAnnotation(kParam, "flatbuffers.Builder", "builder") + |
| GenTypeAnnotation(kReturns, "flatbuffers.Offset", "", false)); |
| |
| if (lang_.language == IDLOptions::kTs) { |
| code += "static end" + Verbose(struct_def); |
| code += "(builder:flatbuffers.Builder):flatbuffers.Offset {\n"; |
| } else { |
| code += object_name + ".end" + Verbose(struct_def); |
| code += " = function(builder) {\n"; |
| } |
| |
| code += " var offset = builder.endObject();\n"; |
| for (auto it = struct_def.fields.vec.begin(); |
| it != struct_def.fields.vec.end(); ++it) { |
| auto &field = **it; |
| if (!field.deprecated && field.required) { |
| code += " builder.requiredField(offset, "; |
| code += NumToString(field.value.offset); |
| code += "); // " + field.name + "\n"; |
| } |
| } |
| code += " return offset;\n"; |
| code += "};\n\n"; |
| |
| // Generate the methods to complete buffer construction |
| GenerateFinisher(struct_def, code_ptr, code, object_name, false); |
| GenerateFinisher(struct_def, code_ptr, code, object_name, true); |
| |
| // Generate a convenient CreateX function |
| if (CanCreateFactoryMethod(struct_def)) { |
| if (lang_.language == IDLOptions::kJs) { |
| std::string paramDoc = |
| GenTypeAnnotation(kParam, "flatbuffers.Builder", "builder"); |
| for (auto it = struct_def.fields.vec.begin(); |
| it != struct_def.fields.vec.end(); ++it) { |
| const auto &field = **it; |
| if (field.deprecated) continue; |
| paramDoc += |
| GenTypeAnnotation(kParam, GetArgType(field), GetArgName(field)); |
| } |
| paramDoc += |
| GenTypeAnnotation(kReturns, "flatbuffers.Offset", "", false); |
| |
| GenDocComment(code_ptr, paramDoc); |
| } |
| |
| if (lang_.language == IDLOptions::kTs) { |
| code += "static create" + Verbose(struct_def); |
| code += "(builder:flatbuffers.Builder"; |
| } else { |
| code += object_name + ".create" + Verbose(struct_def); |
| code += " = function(builder"; |
| } |
| for (auto it = struct_def.fields.vec.begin(); |
| it != struct_def.fields.vec.end(); ++it) { |
| const auto &field = **it; |
| if (field.deprecated) continue; |
| |
| if (lang_.language == IDLOptions::kTs) { |
| code += ", " + GetArgName(field) + ":" + GetArgType(field); |
| } else { |
| code += ", " + GetArgName(field); |
| } |
| } |
| |
| if (lang_.language == IDLOptions::kTs) { |
| code += "):flatbuffers.Offset {\n"; |
| code += " " + struct_def.name + ".start" + Verbose(struct_def) + |
| "(builder);\n"; |
| } else { |
| code += ") {\n"; |
| code += " " + object_name + ".start" + Verbose(struct_def) + |
| "(builder);\n"; |
| } |
| |
| std::string methodPrefix = |
| lang_.language == IDLOptions::kTs ? struct_def.name : object_name; |
| for (auto it = struct_def.fields.vec.begin(); |
| it != struct_def.fields.vec.end(); ++it) { |
| const auto &field = **it; |
| if (field.deprecated) continue; |
| |
| code += " " + methodPrefix + ".add" + MakeCamel(field.name) + "("; |
| code += "builder, " + GetArgName(field) + ");\n"; |
| } |
| |
| code += " return " + methodPrefix + ".end" + Verbose(struct_def) + |
| "(builder);\n"; |
| code += "}\n"; |
| if (lang_.language == IDLOptions::kJs) code += "\n"; |
| } |
| } |
| |
| if (lang_.language == IDLOptions::kTs) { |
| if (parser_.opts.generate_object_based_api) { |
| std::string obj_api_class; |
| std::string obj_api_unpack_func; |
| GenObjApi(parser_, struct_def, obj_api_unpack_func, obj_api_class); |
| |
| code += obj_api_unpack_func + "}\n" + obj_api_class; |
| } else { |
| code += "}\n"; |
| } |
| if (!object_namespace.empty()) { code += "}\n"; } |
| } |
| } |
| |
| std::string GetArgType(const FieldDef &field) { |
| if (field.value.type.enum_def) |
| return GenPrefixedTypeName(GenTypeName(field.value.type, true), |
| field.value.type.enum_def->file); |
| return GenTypeName(field.value.type, true); |
| } |
| |
| static std::string GetArgName(const FieldDef &field) { |
| auto argname = MakeCamel(field.name, false); |
| if (!IsScalar(field.value.type.base_type)) { argname += "Offset"; } |
| |
| return argname; |
| } |
| |
| std::string Verbose(const StructDef &struct_def, const char *prefix = "") { |
| return parser_.opts.js_ts_short_names ? "" : prefix + struct_def.name; |
| } |
| }; // namespace jsts |
| } // namespace jsts |
| |
| bool GenerateJSTS(const Parser &parser, const std::string &path, |
| const std::string &file_name) { |
| jsts::JsTsGenerator generator(parser, path, file_name); |
| return generator.generate(); |
| } |
| |
| std::string JSTSMakeRule(const Parser &parser, const std::string &path, |
| const std::string &file_name) { |
| FLATBUFFERS_ASSERT(parser.opts.lang <= IDLOptions::kMAX); |
| |
| std::string filebase = |
| flatbuffers::StripPath(flatbuffers::StripExtension(file_name)); |
| jsts::JsTsGenerator generator(parser, path, file_name); |
| std::string make_rule = |
| generator.GeneratedFileName(path, filebase, parser.opts) + ": "; |
| |
| auto included_files = parser.GetIncludedFilesRecursive(file_name); |
| for (auto it = included_files.begin(); it != included_files.end(); ++it) { |
| make_rule += " " + *it; |
| } |
| return make_rule; |
| } |
| |
| } // namespace flatbuffers |
