// @RubyLevelMethod(name="swapcase!")
public RubyValue swapcaseBang() {
int length = this.sb_.length();
if (length == 0) {
return RubyConstant.QNIL;
}
char[] ca = new char[length];
this.sb_.getChars(0, length, ca, 0);
boolean modify = false;
for (int i = 0; i < length; i++) {
char c = ca[i];
if (Character.isUpperCase(c)) {
ca[i] = Character.toLowerCase(c);
modify = true;
} else if (Character.isLowerCase(c)) {
ca[i] = Character.toUpperCase(c);
modify = true;
}
}
this.sb_.delete(0, ca.length).append(ca);
if (modify) return this;
return RubyConstant.QNIL;
// return modify ? this : RubyConstant.QNIL;
}
// @RubyLevelMethod(name="upcase")
public RubyString upcase() {
int length = this.sb_.length();
if (length == 0) {
return ObjectFactory.createString();
}
char[] ca = new char[length];
this.sb_.getChars(0, length, ca, 0);
for (int i = 0; i < ca.length; i++) {
ca[i] = Character.toUpperCase(ca[i]);
}
return ObjectFactory.createString(new StringBuffer().append(ca));
}
// @RubyLevelMethod(name="swapcase")
public RubyString swapcase() {
int length = this.sb_.length();
if (length == 0) {
return ObjectFactory.createString();
}
char[] ca = new char[length];
this.sb_.getChars(0, length, ca, 0);
for (int i = 0; i < length; i++) {
char c = ca[i];
if (Character.isUpperCase(c)) {
ca[i] = Character.toLowerCase(c);
} else if (Character.isLowerCase(c)) {
ca[i] = Character.toUpperCase(c);
}
}
return ObjectFactory.createString(new StringBuffer().append(ca));
}