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// Copyright 2017 the V8 project authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include <algorithm>
#include <fstream>
#include <iostream>
#include <string>
#include "src/base/logging.h"
#include "src/torque/ast.h"
#include "src/torque/utils.h"
namespace v8 {
namespace internal {
namespace torque {
std::string StringLiteralUnquote(const std::string& s) {
DCHECK(('"' == s.front() && '"' == s.back()) ||
('\'' == s.front() && '\'' == s.back()));
std::stringstream result;
for (size_t i = 1; i < s.length() - 1; ++i) {
if (s[i] == '\\') {
switch (s[++i]) {
case 'n':
result << '\n';
break;
case 'r':
result << '\r';
break;
case 't':
result << '\t';
break;
case '\'':
case '"':
case '\\':
result << s[i];
break;
default:
UNREACHABLE();
}
} else {
result << s[i];
}
}
return result.str();
}
std::string StringLiteralQuote(const std::string& s) {
std::stringstream result;
result << '"';
for (size_t i = 0; i < s.length() - 1; ++i) {
switch (s[i]) {
case '\n':
result << "\\n";
break;
case '\r':
result << "\\r";
break;
case '\t':
result << "\\t";
break;
case '\'':
case '"':
case '\\':
result << "\\" << s[i];
break;
default:
result << s[i];
}
}
result << '"';
return result.str();
}
std::string CurrentPositionAsString() {
return PositionAsString(CurrentSourcePosition::Get());
}
DEFINE_CONTEXTUAL_VARIABLE(LintErrorStatus)
[[noreturn]] void ReportErrorString(const std::string& error) {
std::cerr << CurrentPositionAsString() << ": Torque error: " << error << "\n";
v8::base::OS::Abort();
}
void LintError(const std::string& error) {
LintErrorStatus::SetLintError();
std::cerr << CurrentPositionAsString() << ": Lint error: " << error << "\n";
}
void NamingConventionError(const std::string& type, const std::string& name,
const std::string& convention) {
std::stringstream sstream;
sstream << type << " \"" << name << "\" doesn't follow \"" << convention
<< "\" naming convention.";
LintError(sstream.str());
}
namespace {
bool ContainsUnderscore(const std::string& s) {
if (s.empty()) return false;
return s.find("_") != std::string::npos;
}
bool ContainsUpperCase(const std::string& s) {
if (s.empty()) return false;
return std::any_of(s.begin(), s.end(), [](char c) { return isupper(c); });
}
// Torque has some module constants that are used like language level
// keywords, e.g.: 'True', 'Undefined', etc.
// These do not need to follow the default naming convention for constants.
bool IsKeywordLikeName(const std::string& s) {
static const std::vector<std::string> keyword_like_constants{
"True", "False", "Hole", "Null", "Undefined"};
return std::find(keyword_like_constants.begin(), keyword_like_constants.end(),
s) != keyword_like_constants.end();
}
// Untagged/MachineTypes like 'int32', 'intptr' etc. follow a 'all-lowercase'
// naming convention and are those exempt from the normal type convention.
bool IsMachineType(const std::string& s) {
static const std::vector<std::string> machine_types{
"void", "never", "int32", "uint32", "int64", "intptr",
"uintptr", "float32", "float64", "bool", "string", "int31"};
return std::find(machine_types.begin(), machine_types.end(), s) !=
machine_types.end();
}
} // namespace
bool IsLowerCamelCase(const std::string& s) {
if (s.empty()) return false;
return islower(s[0]) && !ContainsUnderscore(s);
}
bool IsUpperCamelCase(const std::string& s) {
if (s.empty()) return false;
return isupper(s[0]) && !ContainsUnderscore(s);
}
bool IsSnakeCase(const std::string& s) {
if (s.empty()) return false;
return !ContainsUpperCase(s);
}
bool IsValidModuleConstName(const std::string& s) {
if (s.empty()) return false;
if (IsKeywordLikeName(s)) return true;
return s[0] == 'k' && IsUpperCamelCase(s.substr(1));
}
bool IsValidTypeName(const std::string& s) {
if (s.empty()) return false;
if (IsMachineType(s)) return true;
return IsUpperCamelCase(s);
}
std::string CamelifyString(const std::string& underscore_string) {
std::string result;
bool word_beginning = true;
for (auto current : underscore_string) {
if (current == '_' || current == '-') {
word_beginning = true;
continue;
}
if (word_beginning) {
current = toupper(current);
}
result += current;
word_beginning = false;
}
return result;
}
std::string DashifyString(const std::string& underscore_string) {
std::string result = underscore_string;
std::replace(result.begin(), result.end(), '_', '-');
return result;
}
void ReplaceFileContentsIfDifferent(const std::string& file_path,
const std::string& contents) {
std::ifstream old_contents_stream(file_path.c_str());
std::string old_contents;
if (old_contents_stream.good()) {
std::istreambuf_iterator<char> eos;
old_contents =
std::string(std::istreambuf_iterator<char>(old_contents_stream), eos);
old_contents_stream.close();
}
if (old_contents.length() == 0 || old_contents != contents) {
std::ofstream new_contents_stream;
new_contents_stream.open(file_path.c_str());
new_contents_stream << contents;
new_contents_stream.close();
}
}
} // namespace torque
} // namespace internal
} // namespace v8
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