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// Copyright Vespa.ai. Licensed under the terms of the Apache 2.0 license. See LICENSE in the project root.
package com.yahoo.config.codegen;
import java.util.Arrays;
import java.util.stream.Collectors;
/**
* @author gjoranv
*/
public class ConfiggenUtil {
/**
* Create class name from def name
*
* @param defName the file name without the '.def' suffix
*/
public static String createClassName(String defName) {
String className = Arrays.stream(defName.split("-"))
.map(ConfiggenUtil::capitalize)
.collect(Collectors.joining())
+ "Config";
if (! isLegalJavaIdentifier(className))
throw new CodegenRuntimeException("Illegal config definition file name '" + defName +
"'. Must be a legal Java identifier.");
return className;
}
static String capitalize(String in) {
StringBuilder sb = new StringBuilder(in);
sb.setCharAt(0, Character.toTitleCase(in.charAt(0)));
return sb.toString();
}
private static boolean isLegalJavaIdentifier(String name) {
if (name.isEmpty()) return false;
if (! Character.isJavaIdentifierStart(name.charAt(0))) return false;
for (char c : name.substring(1).toCharArray()) {
if (! Character.isJavaIdentifierPart(c)) return false;
}
return true;
}
}
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