// @RubyLevelMethod(name="[]")
public RubyValue array_access(RubyArray args) {
String string = toString();
if (args.size() == 1) {
RubyValue arg = args.get(0);
if (arg instanceof RubyString) {
String str = ((RubyString) arg).toString();
if (string.indexOf(str) >= 0) {
return ObjectFactory.createString(str);
} else {
return RubyConstant.QNIL;
}
} else if (arg instanceof RubyRange) {
RubyRange range = (RubyRange) arg;
int start = range.getLeft().toInt();
int end = range.getRight().toInt();
return substring(string, start, end, range.isExcludeEnd());
} else if (arg instanceof RubyRegexp) {
RubyRegexp regexp = (RubyRegexp) arg;
RubyMatchData match = regexp.match(string);
if (match != null) {
return ObjectFactory.createString(match.toString());
} else {
return RubyConstant.QNIL;
}
} else {
int index = arg.toInt();
if (index < 0) {
index = string.length() + index;
}
if (index < 0 || index >= string.length()) {
return RubyConstant.QNIL;
} else {
return ObjectFactory.createFixnum(string.charAt(index));
}
}
} else {
int start = args.get(0).toInt();
int length = args.get(1).toInt() - 1;
return substring(string, start, start + length, false);
}
}
// @RubyLevelMethod(name="[]=")
public RubyValue array_set(RubyArray args) {
String string = toString();
String replacement;
int start, end;
if (args.size() == 2) {
RubyValue arg = args.get(0);
replacement = ((RubyString) args.get(1)).toString();
if (arg instanceof RubyString) {
String str = ((RubyString) arg).toString();
start = string.indexOf(str);
if (start >= 0) {
end = start + str.length();
} else {
throw new RubyException(RubyRuntime.IndexErrorClass, "string not matched");
}
} else if (arg instanceof RubyRange) {
RubyRange range = (RubyRange) arg;
start = range.getLeft().toInt();
end = range.getRight().toInt();
if (start >= string.length()) {
throw new RubyException(RubyRuntime.RangeClass, range.toString() + " out of range");
}
} else if (arg instanceof RubyRegexp) {
RubyRegexp regexp = (RubyRegexp) arg;
RubyMatchData match = regexp.match(string);
if (match != null) {
String matched = match.toString();
start = string.indexOf(matched);
end = matched.length() + start;
} else {
throw new RubyException(RubyRuntime.IndexErrorClass, "regexp not matched");
}
} else {
start = arg.toInt();
end = start + 1;
}
} else {
replacement = ((RubyString) args.get(2)).toString();
start = args.get(0).toInt();
end = args.get(1).toInt() + start;
if (start > /*=*/ string.length()) {
throw new RubyException(
RubyRuntime.RangeClass,
"Index '"
+ start
+ "' out of string:"
+ string
+ ";end: '"
+ end
+ "';replacement:"
+ replacement
+ "");
}
}
setString(replace(string, start, end, replacement));
return ObjectFactory.createString(replacement);
}