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TokenRange.java
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TokenRange.java
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package com.github.javaparser;
import java.util.Iterator;
import java.util.Optional;
import static com.github.javaparser.utils.Utils.assertNotNull;
/**
* The range of tokens covered by this node.
*/
public class TokenRange implements Iterable<JavaToken> {
public static final TokenRange INVALID = new TokenRange(JavaToken.INVALID, JavaToken.INVALID);
private final JavaToken begin;
private final JavaToken end;
public TokenRange(JavaToken begin, JavaToken end) {
this.begin = assertNotNull(begin);
this.end = assertNotNull(end);
}
public JavaToken getBegin() {
return begin;
}
public JavaToken getEnd() {
return end;
}
public Optional<Range> toRange() {
if (begin.getRange().isPresent() && end.getRange().isPresent()) {
return Optional.of(new Range(begin.getRange().get().begin, end.getRange().get().end));
}
return Optional.empty();
}
public TokenRange withBegin(JavaToken begin) {
return new TokenRange(assertNotNull(begin), end);
}
public TokenRange withEnd(JavaToken end) {
return new TokenRange(begin, assertNotNull(end));
}
@Override
public String toString() {
JavaToken t = begin;
StringBuilder result = new StringBuilder();
while (true) {
result.append(t.getText());
if (t == end) {
return result.toString();
}
Optional<JavaToken> next = t.getNextToken();
if (next.isPresent()) {
t = next.get();
} else {
return result.toString();
}
}
}
@Override
public Iterator<JavaToken> iterator() {
return new Iterator<JavaToken>() {
private boolean hasNext = true;
private JavaToken current = begin;
@Override
public boolean hasNext() {
return hasNext;
}
@Override
public JavaToken next() {
JavaToken retval = current;
if (current == end) {
hasNext = false;
}
current = current.getNextToken().orElse(null);
return retval;
}
};
}
}