76 lines
1.7 KiB
Java
76 lines
1.7 KiB
Java
import java.util.Collections;
|
|
import java.util.Vector;
|
|
import java.util.stream.Collectors;
|
|
|
|
public class VariableType {
|
|
/**
|
|
* The base type of this variable which remove all ending stars. Each item is a
|
|
* part of namespace string. If no namespace, this Vector will only have one
|
|
* item.
|
|
*/
|
|
private Vector<String> mBaseType;
|
|
/**
|
|
* The pointer level of this type. It is equal with the count of stars.
|
|
*/
|
|
private int mPointerLevel;
|
|
|
|
public VariableType() {
|
|
mBaseType = new Vector<String>();
|
|
mPointerLevel = 0;
|
|
}
|
|
|
|
private VariableType(Vector<String> base_type, int pointer_level) {
|
|
mBaseType.addAll(base_type);
|
|
mPointerLevel = pointer_level;
|
|
}
|
|
|
|
public void fromCType(String ctype) {
|
|
if (ctype.isEmpty())
|
|
throw new IllegalArgumentException("empty string can not be parsed.");
|
|
|
|
// get pointer part and name part
|
|
int len = ctype.length();
|
|
int star_pos = ctype.indexOf('*');
|
|
String namepart;
|
|
if (star_pos == -1) {
|
|
// no star
|
|
namepart = ctype;
|
|
mPointerLevel = 0;
|
|
} else {
|
|
// has star
|
|
if (star_pos == 0)
|
|
throw new IllegalArgumentException("base type not found.");
|
|
namepart = ctype.substring(0, star_pos);
|
|
mPointerLevel = len - star_pos;
|
|
}
|
|
|
|
// resolve name part
|
|
mBaseType.clear();
|
|
for (String item : namepart.split("::")) {
|
|
mBaseType.add(item);
|
|
}
|
|
}
|
|
|
|
public String toCType() {
|
|
return mBaseType.stream().collect(Collectors.joining("::"))
|
|
+ String.join("", Collections.nCopies(mPointerLevel, "*"));
|
|
}
|
|
|
|
public String getBaseType() {
|
|
return mBaseType.lastElement();
|
|
}
|
|
|
|
public boolean isPointer() {
|
|
return mPointerLevel != 0;
|
|
}
|
|
|
|
public boolean isValid() {
|
|
return mBaseType.size() != 0;
|
|
}
|
|
|
|
public VariableType getPointerOfThis() {
|
|
return new VariableType(mBaseType, mPointerLevel);
|
|
}
|
|
|
|
}
|