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package bjc.dicelang.scl.tokens;
import static bjc.dicelang.scl.tokens.WordType.DEFINE;
import static bjc.dicelang.scl.tokens.WordType.DELETESTREAM;
import static bjc.dicelang.scl.tokens.WordType.DROP;
import static bjc.dicelang.scl.tokens.WordType.LEFTSTREAM;
import static bjc.dicelang.scl.tokens.WordType.MAKEARRAY;
import static bjc.dicelang.scl.tokens.WordType.MAKEEXEC;
import static bjc.dicelang.scl.tokens.WordType.MAKEUNEXEC;
import static bjc.dicelang.scl.tokens.WordType.MERGESTREAM;
import static bjc.dicelang.scl.tokens.WordType.NDROP;
import static bjc.dicelang.scl.tokens.WordType.NEWSTREAM;
import static bjc.dicelang.scl.tokens.WordType.NIP;
import static bjc.dicelang.scl.tokens.WordType.NNIP;
import static bjc.dicelang.scl.tokens.WordType.RIGHTSTREAM;
import static bjc.dicelang.scl.tokens.WordType.STACKCOUNT;
import static bjc.dicelang.scl.tokens.WordType.STACKEMPTY;
import java.util.HashMap;
import java.util.Map;
/**
* Represents a single word.
*
* @author student
*
*/
public class WordSCLToken extends SCLToken {
/**
* The value of the word.
*/
public WordType wordVal;
/**
* Create a new word token.
*
* @param wrd
* The value of the word.
*/
public WordSCLToken(String wrd) {
this(builtinWords.get(wrd));
}
/**
* Create a new word token.
*
* @param wrd
* The value of the word.
*/
public WordSCLToken(WordType wrd) {
super(TokenType.WORD);
wordVal = wrd;
}
@Override
public String toString() {
return "WordSCLToken [wordVal=" + wordVal + "]";
}
@Override
public int hashCode() {
final int prime = 31;
int result = super.hashCode();
result = prime * result + ((wordVal == null) ? 0 : wordVal.hashCode());
return result;
}
@Override
public boolean equals(Object obj) {
if (this == obj)
return true;
if (!super.equals(obj))
return false;
if (getClass() != obj.getClass())
return false;
WordSCLToken other = (WordSCLToken) obj;
if (wordVal != other.wordVal)
return false;
return true;
}
/**
* Check if a word is built-in.
*
* @param wrd
* The word to check.
*
* @return Whether or not the word is builtin.
*/
public static boolean isBuiltinWord(String wrd) {
return builtinWords.containsKey(wrd);
}
private static final Map<String, WordType> builtinWords;
static {
/* Init builtin words. */
builtinWords = new HashMap<>();
builtinWords.put("makearray", MAKEARRAY);
builtinWords.put("cvx", MAKEEXEC);
builtinWords.put("cvux", MAKEUNEXEC);
builtinWords.put("+stream", NEWSTREAM);
builtinWords.put(">stream", LEFTSTREAM);
builtinWords.put("<stream", RIGHTSTREAM);
builtinWords.put("-stream", DELETESTREAM);
builtinWords.put("<-stream", MERGESTREAM);
builtinWords.put("#", STACKCOUNT);
builtinWords.put("empty?", STACKEMPTY);
builtinWords.put("drop", DROP);
builtinWords.put("ndrop", NDROP);
builtinWords.put("nip", NIP);
builtinWords.put("nnip", NNIP);
builtinWords.put("def", DEFINE);
}
}
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