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package bjc.pratt.tokens;
import bjc.pratt.Token;
/**
* Simple token implementation for strings.
*
* @author EVE
*
*/
public class StringToken implements Token<String, String> {
private String key;
private String val;
/**
* Create a new string token.
*
* @param ky
* The key for the token.
*
* @param vl
* The value for the token.
*/
public StringToken(String ky, String vl) {
key = ky;
val = vl;
}
@Override
public String getKey() {
return key;
}
@Override
public String getValue() {
return val;
}
@Override
public int hashCode() {
final int prime = 31;
int result = 1;
result = prime * result + ((key == null) ? 0 : key.hashCode());
result = prime * result + ((val == null) ? 0 : val.hashCode());
return result;
}
@Override
public boolean equals(Object obj) {
if (this == obj)
return true;
if (obj == null)
return false;
if (!(obj instanceof StringToken))
return false;
StringToken other = (StringToken) obj;
if (key == null) {
if (other.key != null)
return false;
} else if (!key.equals(other.key))
return false;
if (val == null) {
if (other.val != null)
return false;
} else if (!val.equals(other.val))
return false;
return true;
}
@Override
public String toString() {
return String.format("StringToken [key='%s', val='%s']", key, val);
}
public static StringToken litToken(String val) {
return new StringToken(val, val);
}
}
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