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// Protocol Buffers - Google's data interchange format
// Copyright 2008 Google Inc. All rights reserved.
// https://developers.google.com/protocol-buffers/
//
// Redistribution and use in source and binary forms, with or without
// modification, are permitted provided that the following conditions are
// met:
//
// * Redistributions of source code must retain the above copyright
// notice, this list of conditions and the following disclaimer.
// * Redistributions in binary form must reproduce the above
// copyright notice, this list of conditions and the following disclaimer
// in the documentation and/or other materials provided with the
// distribution.
// * Neither the name of Google Inc. nor the names of its
// contributors may be used to endorse or promote products derived from
// this software without specific prior written permission.
//
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
#ifndef _MSC_VER
#include <unistd.h>
#endif
#include <climits>
#include <errno.h>
#include <fcntl.h>
#include <fstream>
#include <iostream>
#include <sstream>
#include <stdlib.h>
#include <unordered_set>
#include <vector>
#include <google/protobuf/compiler/code_generator.h>
#include <google/protobuf/compiler/objectivec/objectivec_helpers.h>
#include <google/protobuf/compiler/objectivec/objectivec_nsobject_methods.h>
#include <google/protobuf/descriptor.pb.h>
#include <google/protobuf/io/coded_stream.h>
#include <google/protobuf/io/printer.h>
#include <google/protobuf/io/zero_copy_stream_impl.h>
#include <google/protobuf/io/io_win32.h>
#include <google/protobuf/port.h>
#include <google/protobuf/stubs/common.h>
#include <google/protobuf/stubs/strutil.h>
// NOTE: src/google/protobuf/compiler/plugin.cc makes use of cerr for some
// error cases, so it seems to be ok to use as a back door for errors.
namespace google {
namespace protobuf {
namespace compiler {
namespace objectivec {
// <io.h> is transitively included in this file. Import the functions explicitly
// in this port namespace to avoid ambiguous definition.
namespace posix {
#ifdef _WIN32
using ::google::protobuf::io::win32::open;
#else
using ::open;
#endif
} // namespace port
namespace {
class SimpleLineCollector : public LineConsumer {
public:
SimpleLineCollector(std::unordered_set<std::string>* inout_set)
: set_(inout_set) {}
virtual bool ConsumeLine(const StringPiece& line, std::string* out_error) override {
set_->insert(std::string(line));
return true;
}
private:
std::unordered_set<std::string>* set_;
};
class PrefixModeStorage {
public:
PrefixModeStorage();
bool use_package_name() const { return use_package_name_; }
void set_use_package_name(bool on_or_off) { use_package_name_ = on_or_off; }
const std::string exception_path() const { return exception_path_; }
void set_exception_path(const std::string& path) {
exception_path_ = path;
exceptions_.clear();
}
bool is_package_exempted(const std::string& package);
// When using a proto package as the prefix, this should be added as the
// prefix in front of it.
const std::string& forced_package_prefix() const { return forced_prefix_; }
private:
bool use_package_name_;
std::string exception_path_;
std::string forced_prefix_;
std::unordered_set<std::string> exceptions_;
};
PrefixModeStorage::PrefixModeStorage() {
// Even thought there are generation options, have an env back door since some
// of these helpers could be used in other plugins.
const char* use_package_cstr = getenv("GPB_OBJC_USE_PACKAGE_AS_PREFIX");
use_package_name_ =
(use_package_cstr && (std::string("YES") == ToUpper(use_package_cstr)));
const char* exception_path = getenv("GPB_OBJC_PACKAGE_PREFIX_EXCEPTIONS_PATH");
if (exception_path) {
exception_path_ = exception_path;
}
// This one is a not expected to be common, so it doesn't get a generation
// option, just the env var.
const char* prefix = getenv("GPB_OBJC_USE_PACKAGE_AS_PREFIX_PREFIX");
if (prefix) {
forced_prefix_ = prefix;
}
}
bool PrefixModeStorage::is_package_exempted(const std::string& package) {
if (exceptions_.empty() && !exception_path_.empty()) {
std::string error_str;
SimpleLineCollector collector(&exceptions_);
if (!ParseSimpleFile(exception_path_, &collector, &error_str)) {
if (error_str.empty()) {
error_str = std::string("protoc:0: warning: Failed to parse")
+ std::string(" package prefix exceptions file: ")
+ exception_path_;
}
std::cerr << error_str << std::endl;
std::cerr.flush();
exceptions_.clear();
}
// If the file was empty put something in it so it doesn't get reloaded over
// and over.
if (exceptions_.empty()) {
exceptions_.insert("<not a real package>");
}
}
return exceptions_.count(package) != 0;
}
PrefixModeStorage g_prefix_mode;
} // namespace
bool UseProtoPackageAsDefaultPrefix() {
return g_prefix_mode.use_package_name();
}
void SetUseProtoPackageAsDefaultPrefix(bool on_or_off) {
g_prefix_mode.set_use_package_name(on_or_off);
}
std::string GetProtoPackagePrefixExceptionList() {
return g_prefix_mode.exception_path();
}
void SetProtoPackagePrefixExceptionList(const std::string& file_path) {
g_prefix_mode.set_exception_path(file_path);
}
Options::Options() {
// Default is the value of the env for the package prefixes.
const char* file_path = getenv("GPB_OBJC_EXPECTED_PACKAGE_PREFIXES");
if (file_path) {
expected_prefixes_path = file_path;
}
const char* suppressions = getenv("GPB_OBJC_EXPECTED_PACKAGE_PREFIXES_SUPPRESSIONS");
if (suppressions) {
expected_prefixes_suppressions =
Split(suppressions, ";", true);
}
prefixes_must_be_registered = false;
require_prefixes = false;
}
namespace {
std::unordered_set<std::string> MakeWordsMap(const char* const words[],
size_t num_words) {
std::unordered_set<std::string> result;
for (int i = 0; i < num_words; i++) {
result.insert(words[i]);
}
return result;
}
const char* const kUpperSegmentsList[] = {"url", "http", "https"};
std::unordered_set<std::string> kUpperSegments =
MakeWordsMap(kUpperSegmentsList, GOOGLE_ARRAYSIZE(kUpperSegmentsList));
bool ascii_isnewline(char c) {
return c == '\n' || c == '\r';
}
// Internal helper for name handing.
// Do not expose this outside of helpers, stick to having functions for specific
// cases (ClassName(), FieldName()), so there is always consistent suffix rules.
std::string UnderscoresToCamelCase(const std::string& input,
bool first_capitalized) {
std::vector<std::string> values;
std::string current;
bool last_char_was_number = false;
bool last_char_was_lower = false;
bool last_char_was_upper = false;
for (int i = 0; i < input.size(); i++) {
char c = input[i];
if (ascii_isdigit(c)) {
if (!last_char_was_number) {
values.push_back(current);
current = "";
}
current += c;
last_char_was_number = last_char_was_lower = last_char_was_upper = false;
last_char_was_number = true;
} else if (ascii_islower(c)) {
// lowercase letter can follow a lowercase or uppercase letter
if (!last_char_was_lower && !last_char_was_upper) {
values.push_back(current);
current = "";
}
current += c; // already lower
last_char_was_number = last_char_was_lower = last_char_was_upper = false;
last_char_was_lower = true;
} else if (ascii_isupper(c)) {
if (!last_char_was_upper) {
values.push_back(current);
current = "";
}
current += ascii_tolower(c);
last_char_was_number = last_char_was_lower = last_char_was_upper = false;
last_char_was_upper = true;
} else {
last_char_was_number = last_char_was_lower = last_char_was_upper = false;
}
}
values.push_back(current);
std::string result;
bool first_segment_forces_upper = false;
for (std::vector<std::string>::iterator i = values.begin(); i != values.end();
++i) {
std::string value = *i;
bool all_upper = (kUpperSegments.count(value) > 0);
if (all_upper && (result.length() == 0)) {
first_segment_forces_upper = true;
}
for (int j = 0; j < value.length(); j++) {
if (j == 0 || all_upper) {
value[j] = ascii_toupper(value[j]);
} else {
// Nothing, already in lower.
}
}
result += value;
}
if ((result.length() != 0) &&
!first_capitalized &&
!first_segment_forces_upper) {
result[0] = ascii_tolower(result[0]);
}
return result;
}
const char* const kReservedWordList[] = {
// Note NSObject Methods:
// These are brought in from objectivec_nsobject_methods.h that is generated
// using method_dump.sh. See kNSObjectMethods below.
// Objective C "keywords" that aren't in C
// From
// http://stackoverflow.com/questions/1873630/reserved-keywords-in-objective-c
// with some others added on.
"id", "_cmd", "super", "in", "out", "inout", "bycopy", "byref", "oneway",
"self", "instancetype", "nullable", "nonnull", "nil", "Nil",
"YES", "NO", "weak",
// C/C++ keywords (Incl C++ 0x11)
// From http://en.cppreference.com/w/cpp/keywords
"and", "and_eq", "alignas", "alignof", "asm", "auto", "bitand", "bitor",
"bool", "break", "case", "catch", "char", "char16_t", "char32_t", "class",
"compl", "const", "constexpr", "const_cast", "continue", "decltype",
"default", "delete", "double", "dynamic_cast", "else", "enum", "explicit",
"export", "extern ", "false", "float", "for", "friend", "goto", "if",
"inline", "int", "long", "mutable", "namespace", "new", "noexcept", "not",
"not_eq", "nullptr", "operator", "or", "or_eq", "private", "protected",
"public", "register", "reinterpret_cast", "return", "short", "signed",
"sizeof", "static", "static_assert", "static_cast", "struct", "switch",
"template", "this", "thread_local", "throw", "true", "try", "typedef",
"typeid", "typename", "union", "unsigned", "using", "virtual", "void",
"volatile", "wchar_t", "while", "xor", "xor_eq",
// C99 keywords
// From
// http://publib.boulder.ibm.com/infocenter/lnxpcomp/v8v101/index.jsp?topic=%2Fcom.ibm.xlcpp8l.doc%2Flanguage%2Fref%2Fkeyw.htm
"restrict",
// GCC/Clang extension
"typeof",
// Not a keyword, but will break you
"NULL",
// C88+ specs call for these to be macros, so depending on what they are
// defined to be it can lead to odd errors for some Xcode/SDK versions.
"stdin", "stdout", "stderr",
// Objective-C Runtime typedefs
// From <obc/runtime.h>
"Category", "Ivar", "Method", "Protocol",
// GPBMessage Methods
// Only need to add instance methods that may conflict with
// method declared in protos. The main cases are methods
// that take no arguments, or setFoo:/hasFoo: type methods.
"clear", "data", "delimitedData", "descriptor", "extensionRegistry",
"extensionsCurrentlySet", "initialized", "isInitialized", "serializedSize",
"sortedExtensionsInUse", "unknownFields",
// MacTypes.h names
"Fixed", "Fract", "Size", "LogicalAddress", "PhysicalAddress", "ByteCount",
"ByteOffset", "Duration", "AbsoluteTime", "OptionBits", "ItemCount",
"PBVersion", "ScriptCode", "LangCode", "RegionCode", "OSType",
"ProcessSerialNumber", "Point", "Rect", "FixedPoint", "FixedRect", "Style",
"StyleParameter", "StyleField", "TimeScale", "TimeBase", "TimeRecord",
};
// returns true is input starts with __ or _[A-Z] which are reserved identifiers
// in C/ C++. All calls should go through UnderscoresToCamelCase before getting here
// but this verifies and allows for future expansion if we decide to redefine what a
// reserved C identifier is (for example the GNU list
// https://www.gnu.org/software/libc/manual/html_node/Reserved-Names.html )
bool IsReservedCIdentifier(const std::string& input) {
if (input.length() > 2) {
if (input.at(0) == '_') {
if (isupper(input.at(1)) || input.at(1) == '_') {
return true;
}
}
}
return false;
}
std::string SanitizeNameForObjC(const std::string& prefix,
const std::string& input,
const std::string& extension,
std::string* out_suffix_added) {
static const std::unordered_set<std::string> kReservedWords =
MakeWordsMap(kReservedWordList, GOOGLE_ARRAYSIZE(kReservedWordList));
static const std::unordered_set<std::string> kNSObjectMethods =
MakeWordsMap(kNSObjectMethodsList, GOOGLE_ARRAYSIZE(kNSObjectMethodsList));
std::string sanitized;
// We add the prefix in the cases where the string is missing a prefix.
// We define "missing a prefix" as where 'input':
// a) Doesn't start with the prefix or
// b) Isn't equivalent to the prefix or
// c) Has the prefix, but the letter after the prefix is lowercase
if (HasPrefixString(input, prefix)) {
if (input.length() == prefix.length() || !ascii_isupper(input[prefix.length()])) {
sanitized = prefix + input;
} else {
sanitized = input;
}
} else {
sanitized = prefix + input;
}
if (IsReservedCIdentifier(sanitized) ||
(kReservedWords.count(sanitized) > 0) ||
(kNSObjectMethods.count(sanitized) > 0)) {
if (out_suffix_added) *out_suffix_added = extension;
return sanitized + extension;
}
if (out_suffix_added) out_suffix_added->clear();
return sanitized;
}
std::string NameFromFieldDescriptor(const FieldDescriptor* field) {
if (field->type() == FieldDescriptor::TYPE_GROUP) {
return field->message_type()->name();
} else {
return field->name();
}
}
void PathSplit(const std::string& path, std::string* directory,
std::string* basename) {
std::string::size_type last_slash = path.rfind('/');
if (last_slash == std::string::npos) {
if (directory) {
*directory = "";
}
if (basename) {
*basename = path;
}
} else {
if (directory) {
*directory = path.substr(0, last_slash);
}
if (basename) {
*basename = path.substr(last_slash + 1);
}
}
}
bool IsSpecialName(const std::string& name, const std::string* special_names,
size_t count) {
for (size_t i = 0; i < count; ++i) {
size_t length = special_names[i].length();
if (name.compare(0, length, special_names[i]) == 0) {
if (name.length() > length) {
// If name is longer than the retained_name[i] that it matches
// the next character must be not lower case (newton vs newTon vs
// new_ton).
return !ascii_islower(name[length]);
} else {
return true;
}
}
}
return false;
}
std::string GetZeroEnumNameForFlagType(const FlagType flag_type) {
switch(flag_type) {
case FLAGTYPE_DESCRIPTOR_INITIALIZATION:
return "GPBDescriptorInitializationFlag_None";
case FLAGTYPE_EXTENSION:
return "GPBExtensionNone";
case FLAGTYPE_FIELD:
return "GPBFieldNone";
default:
GOOGLE_LOG(FATAL) << "Can't get here.";
return "0";
}
}
std::string GetEnumNameForFlagType(const FlagType flag_type) {
switch(flag_type) {
case FLAGTYPE_DESCRIPTOR_INITIALIZATION:
return "GPBDescriptorInitializationFlags";
case FLAGTYPE_EXTENSION:
return "GPBExtensionOptions";
case FLAGTYPE_FIELD:
return "GPBFieldFlags";
default:
GOOGLE_LOG(FATAL) << "Can't get here.";
return std::string();
}
}
void MaybeUnQuote(StringPiece* input) {
if ((input->length() >= 2) &&
((*input->data() == '\'' || *input->data() == '"')) &&
((*input)[input->length() - 1] == *input->data())) {
input->remove_prefix(1);
input->remove_suffix(1);
}
}
} // namespace
// Escape C++ trigraphs by escaping question marks to \?
std::string EscapeTrigraphs(const std::string& to_escape) {
return StringReplace(to_escape, "?", "\\?", true);
}
void TrimWhitespace(StringPiece* input) {
while (!input->empty() && ascii_isspace(*input->data())) {
input->remove_prefix(1);
}
while (!input->empty() && ascii_isspace((*input)[input->length() - 1])) {
input->remove_suffix(1);
}
}
bool IsRetainedName(const std::string& name) {
// List of prefixes from
// http://developer.apple.com/library/mac/#documentation/Cocoa/Conceptual/MemoryMgmt/Articles/mmRules.html
static const std::string retained_names[] = {"new", "alloc", "copy",
"mutableCopy"};
return IsSpecialName(name, retained_names,
sizeof(retained_names) / sizeof(retained_names[0]));
}
bool IsInitName(const std::string& name) {
static const std::string init_names[] = {"init"};
return IsSpecialName(name, init_names,
sizeof(init_names) / sizeof(init_names[0]));
}
std::string BaseFileName(const FileDescriptor* file) {
std::string basename;
PathSplit(file->name(), NULL, &basename);
return basename;
}
std::string FileClassPrefix(const FileDescriptor* file) {
// Always honor the file option.
if (file->options().has_objc_class_prefix()) {
return file->options().objc_class_prefix();
}
// If package prefix isn't enabled, done.
if (!g_prefix_mode.use_package_name()) {
return "";
}
// If the package is in the exceptions list, done.
if (g_prefix_mode.is_package_exempted(file->package())) {
return "";
}
// Transform the package into a prefix: use the dot segments as part,
// camelcase each one and then join them with underscores, and add an
// underscore at the end.
std::string result;
const std::vector<std::string> segments = Split(file->package(), ".", true);
for (const auto& segment : segments) {
const std::string part = UnderscoresToCamelCase(segment, true);
if (part.empty()) {
continue;
}
if (!result.empty()) {
result.append("_");
}
result.append(part);
}
if (!result.empty()) {
result.append("_");
}
return g_prefix_mode.forced_package_prefix() + result;
}
std::string FilePath(const FileDescriptor* file) {
std::string output;
std::string basename;
std::string directory;
PathSplit(file->name(), &directory, &basename);
if (directory.length() > 0) {
output = directory + "/";
}
basename = StripProto(basename);
// CamelCase to be more ObjC friendly.
basename = UnderscoresToCamelCase(basename, true);
output += basename;
return output;
}
std::string FilePathBasename(const FileDescriptor* file) {
std::string output;
std::string basename;
std::string directory;
PathSplit(file->name(), &directory, &basename);
basename = StripProto(basename);
// CamelCase to be more ObjC friendly.
output = UnderscoresToCamelCase(basename, true);
return output;
}
std::string FileClassName(const FileDescriptor* file) {
const std::string prefix = FileClassPrefix(file);
const std::string name =
UnderscoresToCamelCase(StripProto(BaseFileName(file)), true) + "Root";
// There aren't really any reserved words that end in "Root", but playing
// it safe and checking.
return SanitizeNameForObjC(prefix, name, "_RootClass", NULL);
}
std::string ClassNameWorker(const Descriptor* descriptor) {
std::string name;
if (descriptor->containing_type() != NULL) {
name = ClassNameWorker(descriptor->containing_type());
name += "_";
}
return name + descriptor->name();
}
std::string ClassNameWorker(const EnumDescriptor* descriptor) {
std::string name;
if (descriptor->containing_type() != NULL) {
name = ClassNameWorker(descriptor->containing_type());
name += "_";
}
return name + descriptor->name();
}
std::string ClassName(const Descriptor* descriptor) {
return ClassName(descriptor, NULL);
}
std::string ClassName(const Descriptor* descriptor,
std::string* out_suffix_added) {
// 1. Message names are used as is (style calls for CamelCase, trust it).
// 2. Check for reserved word at the very end and then suffix things.
const std::string prefix = FileClassPrefix(descriptor->file());
const std::string name = ClassNameWorker(descriptor);
return SanitizeNameForObjC(prefix, name, "_Class", out_suffix_added);
}
std::string EnumName(const EnumDescriptor* descriptor) {
// 1. Enum names are used as is (style calls for CamelCase, trust it).
// 2. Check for reserved word at the every end and then suffix things.
// message Fixed {
// message Size {...}
// enum Mumble {...}
// ...
// }
// yields Fixed_Class, Fixed_Size.
const std::string prefix = FileClassPrefix(descriptor->file());
const std::string name = ClassNameWorker(descriptor);
return SanitizeNameForObjC(prefix, name, "_Enum", NULL);
}
std::string EnumValueName(const EnumValueDescriptor* descriptor) {
// Because of the Switch enum compatibility, the name on the enum has to have
// the suffix handing, so it slightly diverges from how nested classes work.
// enum Fixed {
// FOO = 1
// }
// yields Fixed_Enum and Fixed_Enum_Foo (not Fixed_Foo).
const std::string class_name = EnumName(descriptor->type());
const std::string value_str =
UnderscoresToCamelCase(descriptor->name(), true);
const std::string name = class_name + "_" + value_str;
// There aren't really any reserved words with an underscore and a leading
// capital letter, but playing it safe and checking.
return SanitizeNameForObjC("", name, "_Value", NULL);
}
std::string EnumValueShortName(const EnumValueDescriptor* descriptor) {
// Enum value names (EnumValueName above) are the enum name turned into
// a class name and then the value name is CamelCased and concatenated; the
// whole thing then gets sanitized for reserved words.
// The "short name" is intended to be the final leaf, the value name; but
// you can't simply send that off to sanitize as that could result in it
// getting modified when the full name didn't. For example enum
// "StorageModes" has a value "retain". So the full name is
// "StorageModes_Retain", but if we sanitize "retain" it would become
// "RetainValue".
// So the right way to get the short name is to take the full enum name
// and then strip off the enum name (leaving the value name and anything
// done by sanitize).
const std::string class_name = EnumName(descriptor->type());
const std::string long_name_prefix = class_name + "_";
const std::string long_name = EnumValueName(descriptor);
return StripPrefixString(long_name, long_name_prefix);
}
std::string UnCamelCaseEnumShortName(const std::string& name) {
std::string result;
for (int i = 0; i < name.size(); i++) {
char c = name[i];
if (i > 0 && ascii_isupper(c)) {
result += '_';
}
result += ascii_toupper(c);
}
return result;
}
std::string ExtensionMethodName(const FieldDescriptor* descriptor) {
const std::string name = NameFromFieldDescriptor(descriptor);
const std::string result = UnderscoresToCamelCase(name, false);
return SanitizeNameForObjC("", result, "_Extension", NULL);
}
std::string FieldName(const FieldDescriptor* field) {
const std::string name = NameFromFieldDescriptor(field);
std::string result = UnderscoresToCamelCase(name, false);
if (field->is_repeated() && !field->is_map()) {
// Add "Array" before do check for reserved worlds.
result += "Array";
} else {
// If it wasn't repeated, but ends in "Array", force on the _p suffix.
if (HasSuffixString(result, "Array")) {
result += "_p";
}
}
return SanitizeNameForObjC("", result, "_p", NULL);
}
std::string FieldNameCapitalized(const FieldDescriptor* field) {
// Want the same suffix handling, so upcase the first letter of the other
// name.
std::string result = FieldName(field);
if (result.length() > 0) {
result[0] = ascii_toupper(result[0]);
}
return result;
}
std::string OneofEnumName(const OneofDescriptor* descriptor) {
const Descriptor* fieldDescriptor = descriptor->containing_type();
std::string name = ClassName(fieldDescriptor);
name += "_" + UnderscoresToCamelCase(descriptor->name(), true) + "_OneOfCase";
// No sanitize needed because the OS never has names that end in _OneOfCase.
return name;
}
std::string OneofName(const OneofDescriptor* descriptor) {
std::string name = UnderscoresToCamelCase(descriptor->name(), false);
// No sanitize needed because it gets OneOfCase added and that shouldn't
// ever conflict.
return name;
}
std::string OneofNameCapitalized(const OneofDescriptor* descriptor) {
// Use the common handling and then up-case the first letter.
std::string result = OneofName(descriptor);
if (result.length() > 0) {
result[0] = ascii_toupper(result[0]);
}
return result;
}
std::string ObjCClass(const std::string& class_name) {
return std::string("GPBObjCClass(") + class_name + ")";
}
std::string ObjCClassDeclaration(const std::string& class_name) {
return std::string("GPBObjCClassDeclaration(") + class_name + ");";
}
std::string UnCamelCaseFieldName(const std::string& name, const FieldDescriptor* field) {
std::string worker(name);
if (HasSuffixString(worker, "_p")) {
worker = StripSuffixString(worker, "_p");
}
if (field->is_repeated() && HasSuffixString(worker, "Array")) {
worker = StripSuffixString(worker, "Array");
}
if (field->type() == FieldDescriptor::TYPE_GROUP) {
if (worker.length() > 0) {
if (ascii_islower(worker[0])) {
worker[0] = ascii_toupper(worker[0]);
}
}
return worker;
} else {
std::string result;
for (int i = 0; i < worker.size(); i++) {
char c = worker[i];
if (ascii_isupper(c)) {
if (i > 0) {
result += '_';
}
result += ascii_tolower(c);
} else {
result += c;
}
}
return result;
}
}
std::string GetCapitalizedType(const FieldDescriptor* field) {
switch (field->type()) {
case FieldDescriptor::TYPE_INT32:
return "Int32";
case FieldDescriptor::TYPE_UINT32:
return "UInt32";
case FieldDescriptor::TYPE_SINT32:
return "SInt32";
case FieldDescriptor::TYPE_FIXED32:
return "Fixed32";
case FieldDescriptor::TYPE_SFIXED32:
return "SFixed32";
case FieldDescriptor::TYPE_INT64:
return "Int64";
case FieldDescriptor::TYPE_UINT64:
return "UInt64";
case FieldDescriptor::TYPE_SINT64:
return "SInt64";
case FieldDescriptor::TYPE_FIXED64:
return "Fixed64";
case FieldDescriptor::TYPE_SFIXED64:
return "SFixed64";
case FieldDescriptor::TYPE_FLOAT:
return "Float";
case FieldDescriptor::TYPE_DOUBLE:
return "Double";
case FieldDescriptor::TYPE_BOOL:
return "Bool";
case FieldDescriptor::TYPE_STRING:
return "String";
case FieldDescriptor::TYPE_BYTES:
return "Bytes";
case FieldDescriptor::TYPE_ENUM:
return "Enum";
case FieldDescriptor::TYPE_GROUP:
return "Group";
case FieldDescriptor::TYPE_MESSAGE:
return "Message";
}
// Some compilers report reaching end of function even though all cases of
// the enum are handed in the switch.
GOOGLE_LOG(FATAL) << "Can't get here.";
return std::string();
}
ObjectiveCType GetObjectiveCType(FieldDescriptor::Type field_type) {
switch (field_type) {
case FieldDescriptor::TYPE_INT32:
case FieldDescriptor::TYPE_SINT32:
case FieldDescriptor::TYPE_SFIXED32:
return OBJECTIVECTYPE_INT32;
case FieldDescriptor::TYPE_UINT32:
case FieldDescriptor::TYPE_FIXED32:
return OBJECTIVECTYPE_UINT32;
case FieldDescriptor::TYPE_INT64:
case FieldDescriptor::TYPE_SINT64:
case FieldDescriptor::TYPE_SFIXED64:
return OBJECTIVECTYPE_INT64;
case FieldDescriptor::TYPE_UINT64:
case FieldDescriptor::TYPE_FIXED64:
return OBJECTIVECTYPE_UINT64;
case FieldDescriptor::TYPE_FLOAT:
return OBJECTIVECTYPE_FLOAT;
case FieldDescriptor::TYPE_DOUBLE:
return OBJECTIVECTYPE_DOUBLE;
case FieldDescriptor::TYPE_BOOL:
return OBJECTIVECTYPE_BOOLEAN;
case FieldDescriptor::TYPE_STRING:
return OBJECTIVECTYPE_STRING;
case FieldDescriptor::TYPE_BYTES:
return OBJECTIVECTYPE_DATA;
case FieldDescriptor::TYPE_ENUM:
return OBJECTIVECTYPE_ENUM;
case FieldDescriptor::TYPE_GROUP:
case FieldDescriptor::TYPE_MESSAGE:
return OBJECTIVECTYPE_MESSAGE;
}
// Some compilers report reaching end of function even though all cases of
// the enum are handed in the switch.
GOOGLE_LOG(FATAL) << "Can't get here.";
return OBJECTIVECTYPE_INT32;
}
bool IsPrimitiveType(const FieldDescriptor* field) {
ObjectiveCType type = GetObjectiveCType(field);
switch (type) {
case OBJECTIVECTYPE_INT32:
case OBJECTIVECTYPE_UINT32:
case OBJECTIVECTYPE_INT64:
case OBJECTIVECTYPE_UINT64:
case OBJECTIVECTYPE_FLOAT:
case OBJECTIVECTYPE_DOUBLE:
case OBJECTIVECTYPE_BOOLEAN:
case OBJECTIVECTYPE_ENUM:
return true;
break;
default:
return false;
}
}
bool IsReferenceType(const FieldDescriptor* field) {
return !IsPrimitiveType(field);
}
static std::string HandleExtremeFloatingPoint(std::string val,
bool add_float_suffix) {
if (val == "nan") {
return "NAN";
} else if (val == "inf") {
return "INFINITY";
} else if (val == "-inf") {
return "-INFINITY";
} else {
// float strings with ., e or E need to have f appended
if (add_float_suffix && (val.find(".") != std::string::npos ||
val.find("e") != std::string::npos ||
val.find("E") != std::string::npos)) {
val += "f";
}
return val;
}
}
std::string GPBGenericValueFieldName(const FieldDescriptor* field) {
// Returns the field within the GPBGenericValue union to use for the given
// field.
if (field->is_repeated()) {
return "valueMessage";
}
switch (field->cpp_type()) {
case FieldDescriptor::CPPTYPE_INT32:
return "valueInt32";
case FieldDescriptor::CPPTYPE_UINT32:
return "valueUInt32";
case FieldDescriptor::CPPTYPE_INT64:
return "valueInt64";
case FieldDescriptor::CPPTYPE_UINT64:
return "valueUInt64";
case FieldDescriptor::CPPTYPE_FLOAT:
return "valueFloat";
case FieldDescriptor::CPPTYPE_DOUBLE:
return "valueDouble";
case FieldDescriptor::CPPTYPE_BOOL:
return "valueBool";
case FieldDescriptor::CPPTYPE_STRING:
if (field->type() == FieldDescriptor::TYPE_BYTES) {
return "valueData";
} else {
return "valueString";
}
case FieldDescriptor::CPPTYPE_ENUM:
return "valueEnum";
case FieldDescriptor::CPPTYPE_MESSAGE:
return "valueMessage";
}
// Some compilers report reaching end of function even though all cases of
// the enum are handed in the switch.
GOOGLE_LOG(FATAL) << "Can't get here.";
return std::string();
}
std::string DefaultValue(const FieldDescriptor* field) {
// Repeated fields don't have defaults.
if (field->is_repeated()) {
return "nil";
}
// Switch on cpp_type since we need to know which default_value_* method
// of FieldDescriptor to call.
switch (field->cpp_type()) {
case FieldDescriptor::CPPTYPE_INT32:
// gcc and llvm reject the decimal form of kint32min and kint64min.
if (field->default_value_int32() == INT_MIN) {
return "-0x80000000";
}
return StrCat(field->default_value_int32());
case FieldDescriptor::CPPTYPE_UINT32:
return StrCat(field->default_value_uint32()) + "U";
case FieldDescriptor::CPPTYPE_INT64:
// gcc and llvm reject the decimal form of kint32min and kint64min.
if (field->default_value_int64() == LLONG_MIN) {
return "-0x8000000000000000LL";
}
return StrCat(field->default_value_int64()) + "LL";
case FieldDescriptor::CPPTYPE_UINT64:
return StrCat(field->default_value_uint64()) + "ULL";
case FieldDescriptor::CPPTYPE_DOUBLE:
return HandleExtremeFloatingPoint(
SimpleDtoa(field->default_value_double()), false);
case FieldDescriptor::CPPTYPE_FLOAT:
return HandleExtremeFloatingPoint(
SimpleFtoa(field->default_value_float()), true);
case FieldDescriptor::CPPTYPE_BOOL:
return field->default_value_bool() ? "YES" : "NO";
case FieldDescriptor::CPPTYPE_STRING: {
const bool has_default_value = field->has_default_value();
const std::string& default_string = field->default_value_string();
if (!has_default_value || default_string.length() == 0) {
// If the field is defined as being the empty string,
// then we will just assign to nil, as the empty string is the
// default for both strings and data.
return "nil";
}
if (field->type() == FieldDescriptor::TYPE_BYTES) {
// We want constant fields in our data structures so we can
// declare them as static. To achieve this we cheat and stuff
// a escaped c string (prefixed with a length) into the data
// field, and cast it to an (NSData*) so it will compile.
// The runtime library knows how to handle it.
// Must convert to a standard byte order for packing length into
// a cstring.
uint32_t length = ghtonl(default_string.length());
std::string bytes((const char*)&length, sizeof(length));
bytes.append(default_string);
return "(NSData*)\"" + EscapeTrigraphs(CEscape(bytes)) + "\"";
} else {
return "@\"" + EscapeTrigraphs(CEscape(default_string)) + "\"";
}
}
case FieldDescriptor::CPPTYPE_ENUM:
return EnumValueName(field->default_value_enum());
case FieldDescriptor::CPPTYPE_MESSAGE:
return "nil";
}
// Some compilers report reaching end of function even though all cases of
// the enum are handed in the switch.
GOOGLE_LOG(FATAL) << "Can't get here.";
return std::string();
}
bool HasNonZeroDefaultValue(const FieldDescriptor* field) {
// Repeated fields don't have defaults.
if (field->is_repeated()) {
return false;
}
// As much as checking field->has_default_value() seems useful, it isn't
// because of enums. proto2 syntax allows the first item in an enum (the
// default) to be non zero. So checking field->has_default_value() would
// result in missing this non zero default. See MessageWithOneBasedEnum in
// objectivec/Tests/unittest_objc.proto for a test Message to confirm this.
// Some proto file set the default to the zero value, so make sure the value
// isn't the zero case.
switch (field->cpp_type()) {
case FieldDescriptor::CPPTYPE_INT32:
return field->default_value_int32() != 0;
case FieldDescriptor::CPPTYPE_UINT32:
return field->default_value_uint32() != 0U;
case FieldDescriptor::CPPTYPE_INT64:
return field->default_value_int64() != 0LL;
case FieldDescriptor::CPPTYPE_UINT64:
return field->default_value_uint64() != 0ULL;
case FieldDescriptor::CPPTYPE_DOUBLE:
return field->default_value_double() != 0.0;
case FieldDescriptor::CPPTYPE_FLOAT:
return field->default_value_float() != 0.0f;
case FieldDescriptor::CPPTYPE_BOOL:
return field->default_value_bool();
case FieldDescriptor::CPPTYPE_STRING: {
const std::string& default_string = field->default_value_string();
return default_string.length() != 0;
}
case FieldDescriptor::CPPTYPE_ENUM:
return field->default_value_enum()->number() != 0;
case FieldDescriptor::CPPTYPE_MESSAGE:
return false;
}
// Some compilers report reaching end of function even though all cases of
// the enum are handed in the switch.
GOOGLE_LOG(FATAL) << "Can't get here.";
return false;
}
std::string BuildFlagsString(const FlagType flag_type,
const std::vector<std::string>& strings) {
if (strings.empty()) {
return GetZeroEnumNameForFlagType(flag_type);
} else if (strings.size() == 1) {
return strings[0];
}
std::string string("(" + GetEnumNameForFlagType(flag_type) + ")(");
for (size_t i = 0; i != strings.size(); ++i) {
if (i > 0) {
string.append(" | ");
}
string.append(strings[i]);
}
string.append(")");
return string;
}
std::string BuildCommentsString(const SourceLocation& location,
bool prefer_single_line) {
const std::string& comments = location.leading_comments.empty()
? location.trailing_comments
: location.leading_comments;
std::vector<std::string> lines;
lines = Split(comments, "\n", false);
while (!lines.empty() && lines.back().empty()) {
lines.pop_back();
}
// If there are no comments, just return an empty string.
if (lines.empty()) {
return "";
}
std::string prefix;
std::string suffix;
std::string final_comments;
std::string epilogue;
bool add_leading_space = false;
if (prefer_single_line && lines.size() == 1) {
prefix = "/** ";
suffix = " */\n";
} else {
prefix = "* ";
suffix = "\n";
final_comments += "/**\n";
epilogue = " **/\n";
add_leading_space = true;
}
for (int i = 0; i < lines.size(); i++) {
std::string line = StripPrefixString(lines[i], " ");
// HeaderDoc and appledoc use '\' and '@' for markers; escape them.
line = StringReplace(line, "\\", "\\\\", true);
line = StringReplace(line, "@", "\\@", true);
// Decouple / from * to not have inline comments inside comments.
line = StringReplace(line, "/*", "/\\*", true);
line = StringReplace(line, "*/", "*\\/", true);
line = prefix + line;
StripWhitespace(&line);
// If not a one line, need to add the first space before *, as
// StripWhitespace would have removed it.
line = (add_leading_space ? " " : "") + line;
final_comments += line + suffix;
}
final_comments += epilogue;
return final_comments;
}
// Making these a generator option for folks that don't use CocoaPods, but do
// want to put the library in a framework is an interesting question. The
// problem is it means changing sources shipped with the library to actually
// use a different value; so it isn't as simple as a option.
const char* const ProtobufLibraryFrameworkName = "Protobuf";
std::string ProtobufFrameworkImportSymbol(const std::string& framework_name) {
// GPB_USE_[framework_name]_FRAMEWORK_IMPORTS
std::string result = std::string("GPB_USE_");
result += ToUpper(framework_name);
result += "_FRAMEWORK_IMPORTS";
return result;
}
bool IsProtobufLibraryBundledProtoFile(const FileDescriptor* file) {
// We don't check the name prefix or proto package because some files
// (descriptor.proto), aren't shipped generated by the library, so this
// seems to be the safest way to only catch the ones shipped.
const std::string name = file->name();
if (name == "google/protobuf/any.proto" ||
name == "google/protobuf/api.proto" ||
name == "google/protobuf/duration.proto" ||
name == "google/protobuf/empty.proto" ||
name == "google/protobuf/field_mask.proto" ||
name == "google/protobuf/source_context.proto" ||
name == "google/protobuf/struct.proto" ||
name == "google/protobuf/timestamp.proto" ||
name == "google/protobuf/type.proto" ||
name == "google/protobuf/wrappers.proto") {
return true;
}
return false;
}
bool ReadLine(StringPiece* input, StringPiece* line) {
for (int len = 0; len < input->size(); ++len) {
if (ascii_isnewline((*input)[len])) {
*line = StringPiece(input->data(), len);
++len; // advance over the newline
*input = StringPiece(input->data() + len, input->size() - len);
return true;
}
}
return false; // Ran out of input with no newline.
}
void RemoveComment(StringPiece* input) {
int offset = input->find('#');
if (offset != StringPiece::npos) {
input->remove_suffix(input->length() - offset);
}
}
namespace {
class ExpectedPrefixesCollector : public LineConsumer {
public:
ExpectedPrefixesCollector(std::map<std::string, std::string>* inout_package_to_prefix_map)
: prefix_map_(inout_package_to_prefix_map) {}
virtual bool ConsumeLine(const StringPiece& line, std::string* out_error) override;
private:
std::map<std::string, std::string>* prefix_map_;
};
bool ExpectedPrefixesCollector::ConsumeLine(
const StringPiece& line, std::string* out_error) {
int offset = line.find('=');
if (offset == StringPiece::npos) {
*out_error = std::string("Expected prefixes file line without equal sign: '") +
std::string(line) + "'.";
return false;
}
StringPiece package = line.substr(0, offset);
StringPiece prefix = line.substr(offset + 1);
TrimWhitespace(&package);
TrimWhitespace(&prefix);
MaybeUnQuote(&prefix);
// Don't really worry about error checking the package/prefix for
// being valid. Assume the file is validated when it is created/edited.
(*prefix_map_)[std::string(package)] = std::string(prefix);
return true;
}
bool LoadExpectedPackagePrefixes(const Options& generation_options,
std::map<std::string, std::string>* prefix_map,
std::string* out_error) {
if (generation_options.expected_prefixes_path.empty()) {
return true;
}
ExpectedPrefixesCollector collector(prefix_map);
return ParseSimpleFile(
generation_options.expected_prefixes_path, &collector, out_error);
}
bool ValidateObjCClassPrefix(
const FileDescriptor* file, const std::string& expected_prefixes_path,
const std::map<std::string, std::string>& expected_package_prefixes,
bool prefixes_must_be_registered, bool require_prefixes,
std::string* out_error) {
// Reminder: An explicit prefix option of "" is valid in case the default
// prefixing is set to use the proto package and a file needs to be generated
// without any prefix at all (for legacy reasons).
bool has_prefix = file->options().has_objc_class_prefix();
bool have_expected_prefix_file = !expected_prefixes_path.empty();
const std::string prefix = file->options().objc_class_prefix();
const std::string package = file->package();
// For files without packages, the can be registered as "no_package:PATH",
// allowing the expected prefixes file.
static const std::string no_package_prefix("no_package:");
const std::string lookup_key =
package.empty() ? no_package_prefix + file->name() : package;
// NOTE: src/google/protobuf/compiler/plugin.cc makes use of cerr for some
// error cases, so it seems to be ok to use as a back door for warnings.
// Check: Error - See if there was an expected prefix for the package and
// report if it doesn't match (wrong or missing).
std::map<std::string, std::string>::const_iterator package_match =
expected_package_prefixes.find(lookup_key);
if (package_match != expected_package_prefixes.end()) {
// There was an entry, and...
if (has_prefix && package_match->second == prefix) {
// ...it matches. All good, out of here!
return true;
} else {
// ...it didn't match!
*out_error = "error: Expected 'option objc_class_prefix = \"" +
package_match->second + "\";'";
if (!package.empty()) {
*out_error += " for package '" + package + "'";
}
*out_error += " in '" + file->name() + "'";
if (has_prefix) {
*out_error += "; but found '" + prefix + "' instead";
}
*out_error += ".";
return false;
}
}
// If there was no prefix option, we're done at this point.
if (!has_prefix) {
if (require_prefixes) {
*out_error =
"error: '" + file->name() + "' does not have a required 'option" +
" objc_class_prefix'.";
return false;
}
return true;
}
// When the prefix is non empty, check it against the expected entries.
if (!prefix.empty() && have_expected_prefix_file) {
// For a non empty prefix, look for any other package that uses the prefix.
std::string other_package_for_prefix;
for (std::map<std::string, std::string>::const_iterator i =
expected_package_prefixes.begin();
i != expected_package_prefixes.end(); ++i) {
if (i->second == prefix) {
other_package_for_prefix = i->first;
// Stop on the first real package listing, if it was a no_package file
// specific entry, keep looking to try and find a package one.
if (!HasPrefixString(other_package_for_prefix, no_package_prefix)) {
break;
}
}
}
// Check: Error - Make sure the prefix wasn't expected for a different
// package (overlap is allowed, but it has to be listed as an expected
// overlap).
if (!other_package_for_prefix.empty()) {
*out_error =
"error: Found 'option objc_class_prefix = \"" + prefix +
"\";' in '" + file->name() + "'; that prefix is already used for ";
if (HasPrefixString(other_package_for_prefix, no_package_prefix)) {
*out_error += "file '" +
StripPrefixString(other_package_for_prefix, no_package_prefix) +
"'.";
} else {
*out_error += "'package " + other_package_for_prefix + ";'.";
}
*out_error +=
" It can only be reused by adding '" + lookup_key + " = " + prefix +
"' to the expected prefixes file (" + expected_prefixes_path + ").";
return false; // Only report first usage of the prefix.
}
} // !prefix.empty() && have_expected_prefix_file
// Check: Warning - Make sure the prefix is is a reasonable value according
// to Apple's rules (the checks above implicitly whitelist anything that
// doesn't meet these rules).
if (!prefix.empty() && !ascii_isupper(prefix[0])) {
std::cerr
<< "protoc:0: warning: Invalid 'option objc_class_prefix = \""
<< prefix << "\";' in '" << file->name() << "';"
<< " it should start with a capital letter." << std::endl;
std::cerr.flush();
}
if (!prefix.empty() && prefix.length() < 3) {
// Apple reserves 2 character prefixes for themselves. They do use some
// 3 character prefixes, but they haven't updated the rules/docs.
std::cerr
<< "protoc:0: warning: Invalid 'option objc_class_prefix = \""
<< prefix << "\";' in '" << file->name() << "';"
<< " Apple recommends they should be at least 3 characters long."
<< std::endl;
std::cerr.flush();
}
// Check: Error/Warning - If the given package/prefix pair wasn't expected,
// issue a error/warning to added to the file.
if (have_expected_prefix_file) {
if (prefixes_must_be_registered) {
*out_error =
"error: '" + file->name() + "' has 'option objc_class_prefix = \"" +
prefix + "\";', but it is not registered. Add '" + lookup_key + " = " +
(prefix.empty() ? "\"\"" : prefix) +
"' to the expected prefixes file (" + expected_prefixes_path + ").";
return false;
}
std::cerr
<< "protoc:0: warning: Found unexpected 'option objc_class_prefix = \""
<< prefix << "\";' in '" << file->name() << "'; consider adding '"
<< lookup_key << " = " << (prefix.empty() ? "\"\"" : prefix)
<< "' to the expected prefixes file (" << expected_prefixes_path
<< ")." << std::endl;
std::cerr.flush();
}
return true;
}
} // namespace
bool ValidateObjCClassPrefixes(const std::vector<const FileDescriptor*>& files,
const Options& generation_options,
std::string* out_error) {
// Allow a '-' as the path for the expected prefixes to completely disable
// even the most basic of checks.
if (generation_options.expected_prefixes_path == "-") {
return true;
}
// Load the expected package prefixes, if available, to validate against.
std::map<std::string, std::string> expected_package_prefixes;
if (!LoadExpectedPackagePrefixes(generation_options,
&expected_package_prefixes,
out_error)) {
return false;
}
for (int i = 0; i < files.size(); i++) {
bool should_skip =
(std::find(generation_options.expected_prefixes_suppressions.begin(),
generation_options.expected_prefixes_suppressions.end(),
files[i]->name())
!= generation_options.expected_prefixes_suppressions.end());
if (should_skip) {
continue;
}
bool is_valid =
ValidateObjCClassPrefix(files[i],
generation_options.expected_prefixes_path,
expected_package_prefixes,
generation_options.prefixes_must_be_registered,
generation_options.require_prefixes,
out_error);
if (!is_valid) {
return false;
}
}
return true;
}
TextFormatDecodeData::TextFormatDecodeData() { }
TextFormatDecodeData::~TextFormatDecodeData() { }
void TextFormatDecodeData::AddString(int32_t key,
const std::string& input_for_decode,
const std::string& desired_output) {
for (std::vector<DataEntry>::const_iterator i = entries_.begin();
i != entries_.end(); ++i) {
if (i->first == key) {
std::cerr << "error: duplicate key (" << key
<< ") making TextFormat data, input: \"" << input_for_decode
<< "\", desired: \"" << desired_output << "\"." << std::endl;
std::cerr.flush();
abort();
}
}
const std::string& data = TextFormatDecodeData::DecodeDataForString(
input_for_decode, desired_output);
entries_.push_back(DataEntry(key, data));
}
std::string TextFormatDecodeData::Data() const {
std::ostringstream data_stringstream;
if (num_entries() > 0) {
io::OstreamOutputStream data_outputstream(&data_stringstream);
io::CodedOutputStream output_stream(&data_outputstream);
output_stream.WriteVarint32(num_entries());
for (std::vector<DataEntry>::const_iterator i = entries_.begin();
i != entries_.end(); ++i) {
output_stream.WriteVarint32(i->first);
output_stream.WriteString(i->second);
}
}
data_stringstream.flush();
return data_stringstream.str();
}
namespace {
// Helper to build up the decode data for a string.
class DecodeDataBuilder {
public:
DecodeDataBuilder() { Reset(); }
bool AddCharacter(const char desired, const char input);
void AddUnderscore() {
Push();
need_underscore_ = true;
}
std::string Finish() {
Push();
return decode_data_;
}
private:
static constexpr uint8_t kAddUnderscore = 0x80;
static constexpr uint8_t kOpAsIs = 0x00;
static constexpr uint8_t kOpFirstUpper = 0x40;
static constexpr uint8_t kOpFirstLower = 0x20;
static constexpr uint8_t kOpAllUpper = 0x60;
static constexpr int kMaxSegmentLen = 0x1f;
void AddChar(const char desired) {
++segment_len_;
is_all_upper_ &= ascii_isupper(desired);
}
void Push() {
uint8_t op = (op_ | segment_len_);
if (need_underscore_) op |= kAddUnderscore;
if (op != 0) {
decode_data_ += (char)op;
}
Reset();
}
bool AddFirst(const char desired, const char input) {
if (desired == input) {
op_ = kOpAsIs;
} else if (desired == ascii_toupper(input)) {
op_ = kOpFirstUpper;
} else if (desired == ascii_tolower(input)) {
op_ = kOpFirstLower;
} else {
// Can't be transformed to match.
return false;
}
AddChar(desired);
return true;
}
void Reset() {
need_underscore_ = false;
op_ = 0;
segment_len_ = 0;
is_all_upper_ = true;
}
bool need_underscore_;
bool is_all_upper_;
uint8_t op_;
int segment_len_;
std::string decode_data_;
};
bool DecodeDataBuilder::AddCharacter(const char desired, const char input) {
// If we've hit the max size, push to start a new segment.
if (segment_len_ == kMaxSegmentLen) {
Push();
}
if (segment_len_ == 0) {
return AddFirst(desired, input);
}
// Desired and input match...
if (desired == input) {
// If we aren't transforming it, or we're upper casing it and it is
// supposed to be uppercase; just add it to the segment.
if ((op_ != kOpAllUpper) || ascii_isupper(desired)) {
AddChar(desired);
return true;
}
// Add the current segment, and start the next one.
Push();
return AddFirst(desired, input);
}
// If we need to uppercase, and everything so far has been uppercase,
// promote op to AllUpper.
if ((desired == ascii_toupper(input)) && is_all_upper_) {
op_ = kOpAllUpper;
AddChar(desired);
return true;
}
// Give up, push and start a new segment.
Push();
return AddFirst(desired, input);
}
// If decode data can't be generated, a directive for the raw string
// is used instead.
std::string DirectDecodeString(const std::string& str) {
std::string result;
result += (char)'\0'; // Marker for full string.
result += str;
result += (char)'\0'; // End of string.
return result;
}
} // namespace
// static
std::string TextFormatDecodeData::DecodeDataForString(
const std::string& input_for_decode, const std::string& desired_output) {
if (input_for_decode.empty() || desired_output.empty()) {
std::cerr << "error: got empty string for making TextFormat data, input: \""
<< input_for_decode << "\", desired: \"" << desired_output << "\"."
<< std::endl;
std::cerr.flush();
abort();
}
if ((input_for_decode.find('\0') != std::string::npos) ||
(desired_output.find('\0') != std::string::npos)) {
std::cerr << "error: got a null char in a string for making TextFormat data,"
<< " input: \"" << CEscape(input_for_decode) << "\", desired: \""
<< CEscape(desired_output) << "\"." << std::endl;
std::cerr.flush();
abort();
}
DecodeDataBuilder builder;
// Walk the output building it from the input.
int x = 0;
for (int y = 0; y < desired_output.size(); y++) {
const char d = desired_output[y];
if (d == '_') {
builder.AddUnderscore();
continue;
}
if (x >= input_for_decode.size()) {
// Out of input, no way to encode it, just return a full decode.
return DirectDecodeString(desired_output);
}
if (builder.AddCharacter(d, input_for_decode[x])) {
++x; // Consumed one input
} else {
// Couldn't transform for the next character, just return a full decode.
return DirectDecodeString(desired_output);
}
}
if (x != input_for_decode.size()) {
// Extra input (suffix from name sanitizing?), just return a full decode.
return DirectDecodeString(desired_output);
}
// Add the end marker.
return builder.Finish() + (char)'\0';
}
namespace {
class Parser {
public:
Parser(LineConsumer* line_consumer)
: line_consumer_(line_consumer), line_(0) {}
// Feeds in some input, parse what it can, returning success/failure. Calling
// again after an error is undefined.
bool ParseChunk(StringPiece chunk, std::string* out_error);
// Should be called to finish parsing (after all input has been provided via
// successful calls to ParseChunk(), calling after a ParseChunk() failure is
// undefined). Returns success/failure.
bool Finish(std::string* out_error);
int last_line() const { return line_; }
private:
LineConsumer* line_consumer_;
int line_;
std::string leftover_;
};
bool Parser::ParseChunk(StringPiece chunk, std::string* out_error) {
StringPiece full_chunk;
if (!leftover_.empty()) {
leftover_ += std::string(chunk);
full_chunk = StringPiece(leftover_);
} else {
full_chunk = chunk;
}
StringPiece line;
while (ReadLine(&full_chunk, &line)) {
++line_;
RemoveComment(&line);
TrimWhitespace(&line);
if (!line.empty() && !line_consumer_->ConsumeLine(line, out_error)) {
if (out_error->empty()) {
*out_error = "ConsumeLine failed without setting an error.";
}
leftover_.clear();
return false;
}
}
if (full_chunk.empty()) {
leftover_.clear();
} else {
leftover_ = std::string(full_chunk);
}
return true;
}
bool Parser::Finish(std::string* out_error) {
// If there is still something to go, flush it with a newline.
if (!leftover_.empty() && !ParseChunk("\n", out_error)) {
return false;
}
// This really should never fail if ParseChunk succeeded, but check to be sure.
if (!leftover_.empty()) {
*out_error = "ParseSimple Internal error: finished with pending data.";
return false;
}
return true;
}
std::string FullErrorString(const std::string& name, int line_num, const std::string& msg) {
return std::string("error: ") + name + " Line " + StrCat(line_num) + ", " + msg;
}
} // namespace
LineConsumer::LineConsumer() {}
LineConsumer::~LineConsumer() {}
bool ParseSimpleFile(const std::string& path, LineConsumer* line_consumer,
std::string* out_error) {
int fd;
do {
fd = posix::open(path.c_str(), O_RDONLY);
} while (fd < 0 && errno == EINTR);
if (fd < 0) {
*out_error = std::string("error: Unable to open \"") + path + "\", " +
strerror(errno);
return false;
}
io::FileInputStream file_stream(fd);
file_stream.SetCloseOnDelete(true);
return ParseSimpleStream(file_stream, path, line_consumer, out_error);
}
bool ParseSimpleStream(io::ZeroCopyInputStream& input_stream,
const std::string& stream_name,
LineConsumer* line_consumer,
std::string* out_error) {
std::string local_error;
Parser parser(line_consumer);
const void* buf;
int buf_len;
while (input_stream.Next(&buf, &buf_len)) {
if (buf_len == 0) {
continue;
}
if (!parser.ParseChunk(StringPiece(static_cast<const char*>(buf), buf_len),
&local_error)) {
*out_error = FullErrorString(stream_name, parser.last_line(), local_error);
return false;
}
}
if (!parser.Finish(&local_error)) {
*out_error = FullErrorString(stream_name, parser.last_line(), local_error);
return false;
}
return true;
}
ImportWriter::ImportWriter(
const std::string& generate_for_named_framework,
const std::string& named_framework_to_proto_path_mappings_path,
const std::string& runtime_import_prefix, bool include_wkt_imports)
: generate_for_named_framework_(generate_for_named_framework),
named_framework_to_proto_path_mappings_path_(
named_framework_to_proto_path_mappings_path),
runtime_import_prefix_(runtime_import_prefix),
include_wkt_imports_(include_wkt_imports),
need_to_parse_mapping_file_(true) {}
ImportWriter::~ImportWriter() {}
void ImportWriter::AddFile(const FileDescriptor* file,
const std::string& header_extension) {
if (IsProtobufLibraryBundledProtoFile(file)) {
// The imports of the WKTs are only needed within the library itself,
// in other cases, they get skipped because the generated code already
// import GPBProtocolBuffers.h and hence proves them.
if (include_wkt_imports_) {
const std::string header_name =
"GPB" + FilePathBasename(file) + header_extension;
protobuf_imports_.push_back(header_name);
}
return;
}
// Lazy parse any mappings.
if (need_to_parse_mapping_file_) {
ParseFrameworkMappings();
}
std::map<std::string, std::string>::iterator proto_lookup =
proto_file_to_framework_name_.find(file->name());
if (proto_lookup != proto_file_to_framework_name_.end()) {
other_framework_imports_.push_back(
proto_lookup->second + "/" +
FilePathBasename(file) + header_extension);
return;
}
if (!generate_for_named_framework_.empty()) {
other_framework_imports_.push_back(
generate_for_named_framework_ + "/" +
FilePathBasename(file) + header_extension);
return;
}
other_imports_.push_back(FilePath(file) + header_extension);
}
void ImportWriter::Print(io::Printer* printer) const {
bool add_blank_line = false;
if (!protobuf_imports_.empty()) {
PrintRuntimeImports(printer, protobuf_imports_, runtime_import_prefix_);
add_blank_line = true;
}
if (!other_framework_imports_.empty()) {
if (add_blank_line) {
printer->Print("\n");
}
for (std::vector<std::string>::const_iterator iter =
other_framework_imports_.begin();
iter != other_framework_imports_.end(); ++iter) {
printer->Print(
"#import <$header$>\n",
"header", *iter);
}
add_blank_line = true;
}
if (!other_imports_.empty()) {
if (add_blank_line) {
printer->Print("\n");
}
for (std::vector<std::string>::const_iterator iter = other_imports_.begin();
iter != other_imports_.end(); ++iter) {
printer->Print(
"#import \"$header$\"\n",
"header", *iter);
}
}
}
void ImportWriter::PrintRuntimeImports(
io::Printer* printer, const std::vector<std::string>& header_to_import,
const std::string& runtime_import_prefix, bool default_cpp_symbol) {
// Given an override, use that.
if (!runtime_import_prefix.empty()) {
for (const auto& header : header_to_import) {
printer->Print(
" #import \"$import_prefix$/$header$\"\n",
"import_prefix", runtime_import_prefix,
"header", header);
}
return;
}
const std::string framework_name(ProtobufLibraryFrameworkName);
const std::string cpp_symbol(ProtobufFrameworkImportSymbol(framework_name));
if (default_cpp_symbol) {
printer->Print(
"// This CPP symbol can be defined to use imports that match up to the framework\n"
"// imports needed when using CocoaPods.\n"
"#if !defined($cpp_symbol$)\n"
" #define $cpp_symbol$ 0\n"
"#endif\n"
"\n",
"cpp_symbol", cpp_symbol);
}
printer->Print(
"#if $cpp_symbol$\n",
"cpp_symbol", cpp_symbol);
for (const auto& header : header_to_import) {
printer->Print(
" #import <$framework_name$/$header$>\n",
"framework_name", framework_name,
"header", header);
}
printer->Print(
"#else\n");
for (const auto& header : header_to_import) {
printer->Print(
" #import \"$header$\"\n",
"header", header);
}
printer->Print(
"#endif\n");
}
void ImportWriter::ParseFrameworkMappings() {
need_to_parse_mapping_file_ = false;
if (named_framework_to_proto_path_mappings_path_.empty()) {
return; // Nothing to do.
}
ProtoFrameworkCollector collector(&proto_file_to_framework_name_);
std::string parse_error;
if (!ParseSimpleFile(named_framework_to_proto_path_mappings_path_,
&collector, &parse_error)) {
std::cerr << "error parsing " << named_framework_to_proto_path_mappings_path_
<< " : " << parse_error << std::endl;
std::cerr.flush();
}
}
bool ImportWriter::ProtoFrameworkCollector::ConsumeLine(
const StringPiece& line, std::string* out_error) {
int offset = line.find(':');
if (offset == StringPiece::npos) {
*out_error =
std::string("Framework/proto file mapping line without colon sign: '") +
std::string(line) + "'.";
return false;
}
StringPiece framework_name = line.substr(0, offset);
StringPiece proto_file_list = line.substr(offset + 1);
TrimWhitespace(&framework_name);
int start = 0;
while (start < proto_file_list.length()) {
offset = proto_file_list.find(',', start);
if (offset == StringPiece::npos) {
offset = proto_file_list.length();
}
StringPiece proto_file = proto_file_list.substr(start, offset - start);
TrimWhitespace(&proto_file);
if (!proto_file.empty()) {
std::map<std::string, std::string>::iterator existing_entry =
map_->find(std::string(proto_file));
if (existing_entry != map_->end()) {
std::cerr << "warning: duplicate proto file reference, replacing "
"framework entry for '"
<< std::string(proto_file) << "' with '" << std::string(framework_name)
<< "' (was '" << existing_entry->second << "')." << std::endl;
std::cerr.flush();
}
if (proto_file.find(' ') != StringPiece::npos) {
std::cerr << "note: framework mapping file had a proto file with a "
"space in, hopefully that isn't a missing comma: '"
<< std::string(proto_file) << "'" << std::endl;
std::cerr.flush();
}
(*map_)[std::string(proto_file)] = std::string(framework_name);
}
start = offset + 1;
}
return true;
}
} // namespace objectivec
} // namespace compiler
} // namespace protobuf
} // namespace google