public Object execute(VirtualFrame frame) {
final Object childValue = child.execute(frame);
if (!(RubyGuards.isRubyString(childValue)) && childValue != nil()) {
CompilerDirectives.transferToInterpreter();
throw new RaiseException(getContext().getCoreLibrary().typeErrorMustBe("$/", "String", this));
}
return childValue;
}
private String toString(Object methodName) {
if (methodName instanceof String) {
return (String) methodName;
} else if (RubyGuards.isRubyString(methodName)) {
return methodName.toString();
} else if (RubyGuards.isRubySymbol(methodName)) {
return Layouts.SYMBOL.getString((DynamicObject) methodName);
} else {
throw new UnsupportedOperationException();
}
}
@Override
public Object execute(VirtualFrame frame) {
if (RubyGuards.isRubyString(ForeignAccess.getReceiver(frame))) {
final DynamicObject string = (DynamicObject) ForeignAccess.getReceiver(frame);
final int index = (int) ForeignAccess.getArguments(frame).get(labelIndex);
if (index >= Layouts.STRING.getRope(string).byteLength()) {
return 0;
} else {
return (byte) StringOperations.getByteListReadOnly(string).get(index);
}
} else {
CompilerDirectives.transferToInterpreter();
throw new IllegalStateException("Not implemented");
}
}
public static boolean isRopeBuffer(DynamicObject string) {
assert RubyGuards.isRubyString(string);
return rope(string) instanceof RopeBuffer;
}
public static boolean isEmpty(DynamicObject string) {
assert RubyGuards.isRubyString(string);
return Layouts.STRING.getRope(string).isEmpty();
}
public static boolean isBrokenCodeRange(DynamicObject string) {
assert RubyGuards.isRubyString(string);
return StringOperations.codeRange(string) == CodeRange.CR_BROKEN;
}
public static boolean isValidUtf8(DynamicObject string) {
assert RubyGuards.isRubyString(string);
return StringOperations.isCodeRangeValid(string)
&& Layouts.STRING.getRope(string).getEncoding().isUTF8();
}
public static boolean isFixedWidthEncoding(DynamicObject string) {
assert RubyGuards.isRubyString(string);
return Layouts.STRING.getRope(string).getEncoding().isFixedWidth();
}
public static boolean isAsciiCompatible(DynamicObject string) {
assert RubyGuards.isRubyString(string);
return Layouts.STRING.getRope(string).getEncoding().isAsciiCompatible();
}
public static boolean is7Bit(DynamicObject string) {
assert RubyGuards.isRubyString(string);
return StringOperations.codeRange(string) == CodeRange.CR_7BIT;
}
public static boolean isSingleByteOptimizable(DynamicObject string) {
assert RubyGuards.isRubyString(string);
return Layouts.STRING.getRope(string).isSingleByteOptimizable();
}
