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/*
* Copyright (C) 2018 The Android Open Source Project
*
* 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.
*/
package com.android.xsdc.cpp;
import java.util.Arrays;
import java.util.HashSet;
class Utils {
private static final String[] keywords = {
"alignas", "alignof", "and", "and_eq", "asm", "atomic_cancel", "atomic_commit",
"atomic_noexcept", "auto", "bitand", "bitor", "bool", "break", "case", "catch",
"char", "char16_t", "char32_t", "class", "compl", "concept", "const", "constexpr",
"const_cast", "continue", "decltype", "default", "delete", "do", "double",
"dynamic_cast", "else", "enum", "explicit", "export", "extern", "false", "float",
"for", "friend", "goto", "if", "inline", "int", "import", "long", "module", "mutable",
"namespace", "new", "noexcept", "not", "not_eq", "nullptr", "operator", "or", "or_eq",
"private", "protected", "public", "register", "reinterpret_cast", "requires", "return",
"short", "signed", "sizeof", "static", "static_assert", "static_cast", "struct",
"switch", "synchronized", "template", "this", "thread_local", "throw", "true", "try",
"typedef", "typeid", "typename", "union", "unsigned", "using", "virtual", "void",
"volatile", "wchar_t", "while", "xor", "xor_eq",
};
private static final HashSet<String> keywordSet = new HashSet<>(Arrays.asList(keywords));
private static String toCamelCase(String[] words) {
String res = words[0];
for (int idx = 1; idx < words.length; ++idx) {
res += capitalize(words[idx]);
}
return res;
}
static String capitalize(String input) {
return input.substring(0, 1).toUpperCase() + input.substring(1);
}
static String lowerize(String input) {
return input.substring(0, 1).toLowerCase() + input.substring(1);
}
static String toVariableName(String name) throws CppCodeGeneratorException {
String trimmed = toCamelCase(name.replaceAll("[^A-Za-z0-9_-]", "").split("-"));
if (trimmed.isEmpty()) {
throw new CppCodeGeneratorException(
String.format("cannot convert to a variable name : %s", name));
}
String lowered = Character.isDigit(trimmed.charAt(0)) ? "_" + trimmed
: lowerize(trimmed);
// always starts with a lowercase or underscore character.
return (keywordSet.contains(trimmed)) ? "_" + lowered : lowered;
}
static String toClassName(String name) throws CppCodeGeneratorException {
String trimmed = toCamelCase(
name.replaceAll("[^A-Za-z0-9_-]", "").replaceAll("[\\.-]", "_").split("_"));
if (trimmed.isEmpty() || Character.isDigit(trimmed.charAt(0))) {
throw new CppCodeGeneratorException(
String.format("cannot convert to a class name : %s", name));
}
return capitalize(trimmed);
}
static String toEnumName(String name) throws CppCodeGeneratorException {
String trimmed = name.replace(".", "_").replaceAll("[^A-Za-z0-9_]", "");
if (trimmed.isEmpty()) {
throw new CppCodeGeneratorException(
String.format("cannot convert to a variable name : %s", name));
}
String enumName = Character.isDigit(trimmed.charAt(0)) ? "_" + trimmed : trimmed;
return (keywordSet.contains(trimmed)) ? "_" + enumName : enumName;
}
}
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