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// Copyright Yahoo. Licensed under the terms of the Apache 2.0 license. See LICENSE in the project root.
package com.yahoo.config.codegen;
import java.util.StringTokenizer;
/**
* Abstract superclass for all nodes representing a config definition.
*
* @author gjoranv
*/
public abstract class CNode {
// TODO: replace by "type" enum
public final boolean isArray;
public final boolean isMap;
final String name;
final InnerCNode parent;
// TODO: remove! Only set for the root node, and root.getName() returns the same thing!
String defName = null;
String defNamespace = null;
String defPackage = null;
String defMd5 = "MISSING MD5";
String comment = "";
protected CNode(InnerCNode parent, String name) {
this.parent = parent;
int bracketIdx = name.indexOf('[');
int curlyIdx = name.indexOf('{');
if (bracketIdx != -1) {
this.name = name.substring(0, bracketIdx);
isArray = true;
isMap = false;
} else if (curlyIdx != -1) {
this.name = name.substring(0, curlyIdx);
isMap = true;
isArray = false;
} else {
this.name = name;
isMap = false;
isArray = false;
}
}
/**
* Returns the simple name of this node.
* @return the simple name of this node
*/
public String getName() {
return name;
}
public InnerCNode getParent() {
return parent;
}
public abstract CNode[] getChildren();
public abstract CNode getChild(String name);
public String getMd5() {
return defMd5;
}
void setMd5(String md5) {
defMd5 = md5;
}
public String getNamespace() {
if (defNamespace != null) return defNamespace;
if (defPackage != null) return defPackage;
return null;
}
void setNamespace(String namespace) {
defNamespace = namespace;
}
public String getPackage() {
return defPackage;
}
void setPackage(String defPackage) { this.defPackage = defPackage; }
public String getComment() {
return comment;
}
void setComment(String comment) {
this.comment = comment;
}
protected abstract void setLeaf(String name, DefLine defLine, String comment)
throws IllegalArgumentException;
public abstract boolean needRestart();
protected void checkMyName(String myName) throws IllegalArgumentException {
if (isArray) {
int n1 = myName.indexOf('[');
int n2 = myName.indexOf(']');
if (n1 == -1 || n2 < n1)
throw new IllegalArgumentException("Invalid array syntax: " + myName);
myName = myName.substring(0, n1);
} else if (isMap) {
int n1 = myName.indexOf('{');
int n2 = myName.indexOf('}');
if (n1 == -1 || n2 < n1)
throw new IllegalArgumentException("Invalid map syntax: " + myName);
myName = myName.substring(0, n1);
} else if (myName.contains("[]")) {
throw new IllegalArgumentException("Parameter with name '" + getName() + "' has already been declared as a non-array type.");
} else if (myName.contains("{}")) {
throw new IllegalArgumentException("Parameter with name '" + getName() + "' has already been declared as a non-map type.");
}
if (!myName.equals(getName()))
throw new IllegalArgumentException(myName + " does not match " + getName() + ".");
}
/**
* @return the full name as a config path of this node.
*/
public String getFullName() {
StringBuilder buf = new StringBuilder();
if (parent != null)
buf.append(parent.getFullName());
if (buf.length() > 0)
buf.append('.');
StringBuilder theName = new StringBuilder(this.getName());
if (isArray) theName.append("[]");
else if (isMap) theName.append("{}");
return buf.append(theName).toString();
}
/**
* @param prefix The prefix to use, usually an indent (spaces) followed by either '*' or "//"
* @return a comment block where each line is prefixed, but the caller must close it if using '*'.
*/
public String getCommentBlock(String prefix) {
prefix = prefix + " ";
StringBuilder ret = new StringBuilder();
if (getComment().length() > 0) {
StringTokenizer st = new StringTokenizer(getComment(), "\n");
while (st.hasMoreTokens()) {
ret.append(prefix).append(st.nextToken()).append("\n");
}
}
return ret.toString();
}
@Override
public String toString() {
return "CNode{" +
"namespace='" + defNamespace + '\'' +
", package='" + defPackage + '\'' +
", name='" + name + '\'' +
'}';
}
}
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