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* except in compliance with the License. You may obtain a copy of
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package org.jruby.util;
import org.jruby.Ruby;
import org.jruby.RubyBoolean;
import org.jruby.RubyClass;
import org.jruby.RubyFixnum;
import org.jruby.RubyFloat;
import org.jruby.RubyInteger;
import org.jruby.RubyNumeric;
import org.jruby.exceptions.RaiseException;
import org.jruby.runtime.ThreadContext;
import org.jruby.runtime.builtin.IRubyObject;
public class TypeConverter {
/**
* Converts this object to type 'targetType' using 'convertMethod' method (MRI: convert_type).
*
* @param obj the object to convert
* @param targetType is the type we are trying to convert to
* @param convertMethodIndex the fast index to use for calling the method
* @param convertMethod is the method to be called to try and convert to targeType
* @param raiseOnError will throw an Error if conversion does not work
* @return the converted value
*/
@Deprecated
public static final IRubyObject convertToType(IRubyObject obj, RubyClass target, int convertMethodIndex, String convertMethod, boolean raise) {
if (!obj.respondsTo(convertMethod)) return handleUncoercibleObject(raise, obj, target);
return obj.callMethod(obj.getRuntime().getCurrentContext(), convertMethod);
}
/**
* Converts this object to type 'targetType' using 'convertMethod' method (MRI: convert_type).
*
* @param obj the object to convert
* @param targetType is the type we are trying to convert to
* @param convertMethodIndex the fast index to use for calling the method
* @param convertMethod is the method to be called to try and convert to targeType
* @param raiseOnError will throw an Error if conversion does not work
* @return the converted value
*/
public static final IRubyObject convertToType(IRubyObject obj, RubyClass target, String convertMethod, boolean raise) {
if (!obj.respondsTo(convertMethod)) return handleUncoercibleObject(raise, obj, target);
return obj.callMethod(obj.getRuntime().getCurrentContext(), convertMethod);
}
/**
* Converts this object to type 'targetType' using 'convertMethod' method (MRI: convert_type 1.9).
*
* @param obj the object to convert
* @param targetType is the type we are trying to convert to
* @param convertMethodIndex the fast index to use for calling the method
* @param convertMethod is the method to be called to try and convert to targeType
* @param raiseOnError will throw an Error if conversion does not work
* @return the converted value
*/
public static final IRubyObject convertToType19(IRubyObject obj, RubyClass target, String convertMethod, boolean raise) {
IRubyObject r = obj.checkCallMethod(obj.getRuntime().getCurrentContext(), convertMethod);
return r == null ? handleUncoercibleObject(raise, obj, target) : r;
}
/**
* Converts this object to type 'targetType' using 'convertMethod' method and raises TypeError exception on failure (MRI: rb_convert_type).
*
* @param obj the object to convert
* @param targetType is the type we are trying to convert to
* @param convertMethodIndex the fast index to use for calling the method
* @param convertMethod is the method to be called to try and convert to targeType
* @return the converted value
*/
@Deprecated
public static final IRubyObject convertToType(IRubyObject obj, RubyClass target, int convertMethodIndex, String convertMethod) {
if (target.isInstance(obj)) return obj;
IRubyObject val = convertToType(obj, target, convertMethod, true);
if (!target.isInstance(val)) throw obj.getRuntime().newTypeError(obj.getMetaClass() + "#" + convertMethod + " should return " + target.getName());
return val;
}
/**
* Converts this object to type 'targetType' using 'convertMethod' method and raises TypeError exception on failure (MRI: rb_convert_type).
*
* @param obj the object to convert
* @param targetType is the type we are trying to convert to
* @param convertMethod is the method to be called to try and convert to targeType
* @return the converted value
*/
public static final IRubyObject convertToType(IRubyObject obj, RubyClass target, String convertMethod) {
if (target.isInstance(obj)) return obj;
IRubyObject val = convertToType(obj, target, convertMethod, true);
if (!target.isInstance(val)) throw obj.getRuntime().newTypeError(obj.getMetaClass() + "#" + convertMethod + " should return " + target.getName());
return val;
}
/**
* Converts this object to type 'targetType' using 'convertMethod' method and raises TypeError exception on failure (MRI: rb_convert_type in 1.9).
*
* @param obj the object to convert
* @param targetType is the type we are trying to convert to
* @param convertMethod is the method to be called to try and convert to targeType
* @return the converted value
*/
public static final IRubyObject convertToType19(IRubyObject obj, RubyClass target, String convertMethod) {
if (target.isInstance(obj)) return obj;
IRubyObject val = convertToType19(obj, target, convertMethod, true);
if (!target.isInstance(val)) {
String cname = obj.getMetaClass().toString();
throw obj.getRuntime().newTypeError("can't convert " + cname + " to " + target.getName() + " (" + cname + "#" + convertMethod + " gives " + val.getMetaClass() + ")");
}
return val;
}
// MRI: rb_to_float 1.9
public static RubyNumeric toFloat(Ruby runtime, IRubyObject obj) {
RubyClass floatClass = runtime.getFloat();
if (floatClass.isInstance(obj)) return (RubyNumeric) obj;
if (!runtime.getNumeric().isInstance(obj)) throw runtime.newTypeError(obj, "Float");
return (RubyNumeric) convertToType19(obj, floatClass, "to_f", true);
}
/**
* Checks that this object is of type DATA and then returns it, otherwise raises failure (MRI: Check_Type(obj, T_DATA))
*
* @param obj the object to check
* @return the converted value
*/
public static final IRubyObject checkData(IRubyObject obj) {
if(obj instanceof org.jruby.runtime.marshal.DataType) return obj;
throw obj.getRuntime().newTypeError("wrong argument type " + typeAsString(obj) + " (expected Data)");
}
private static String typeAsString(IRubyObject obj) {
if (obj.isNil()) return "nil";
if (obj instanceof RubyBoolean) return obj.isTrue() ? "true" : "false";
return obj.getMetaClass().getRealClass().getName();
}
/**
* Higher level conversion utility similar to convertToType but it can throw an
* additional TypeError during conversion (MRI: rb_check_convert_type).
*
* @param obj the object to convert
* @param targetType is the type we are trying to convert to
* @param convertMethodIndex the fast index to use for calling the method
* @param convertMethod is the method to be called to try and convert to targeType
* @return the converted value
*/
@Deprecated
public static final IRubyObject convertToTypeWithCheck(IRubyObject obj, RubyClass target, int convertMethodIndex, String convertMethod) {
if (target.isInstance(obj)) return obj;
IRubyObject val = TypeConverter.convertToType(obj, target, convertMethod, false);
if (val.isNil()) return val;
if (!target.isInstance(val)) throw obj.getRuntime().newTypeError(obj.getMetaClass() + "#" + convertMethod + " should return " + target.getName());
return val;
}
/**
* Higher level conversion utility similar to convertToType but it can throw an
* additional TypeError during conversion (MRI: rb_check_convert_type).
*
* @param obj the object to convert
* @param targetType is the type we are trying to convert to
* @param convertMethodIndex the fast index to use for calling the method
* @param convertMethod is the method to be called to try and convert to targeType
* @return the converted value
*/
public static final IRubyObject convertToTypeWithCheck(IRubyObject obj, RubyClass target, String convertMethod) {
if (target.isInstance(obj)) return obj;
IRubyObject val = TypeConverter.convertToType(obj, target, convertMethod, false);
if (val.isNil()) return val;
if (!target.isInstance(val)) throw obj.getRuntime().newTypeError(obj.getMetaClass() + "#" + convertMethod + " should return " + target.getName());
return val;
}
/**
* Higher level conversion utility similar to convertToType but it can throw an
* additional TypeError during conversion (MRI: rb_check_convert_type).
*
* @param obj the object to convert
* @param targetType is the type we are trying to convert to
* @param convertMethodIndex the fast index to use for calling the method
* @param convertMethod is the method to be called to try and convert to targeType
* @return the converted value
*/
public static final IRubyObject convertToTypeWithCheck19(IRubyObject obj, RubyClass target, String convertMethod) {
if (target.isInstance(obj)) return obj;
IRubyObject val = TypeConverter.convertToType19(obj, target, convertMethod, false);
if (val.isNil()) return val;
if (!target.isInstance(val)) throw obj.getRuntime().newTypeError(obj.getMetaClass() + "#" + convertMethod + " should return " + target.getName());
return val;
}
/**
* Higher level conversion utility similar to convertToType but it can throw an
* additional TypeError during conversion (MRI: rb_check_convert_type).
*
* @param obj the object to convert
* @param targetType is the type we are trying to convert to
* @param convertMethod is the method to be called to try and convert to targeType
* @return the converted value
*/
public static final IRubyObject convertToTypeOrRaise(IRubyObject obj, RubyClass target, String convertMethod) {
if (target.isInstance(obj)) return obj;
IRubyObject val = TypeConverter.convertToType(obj, target, convertMethod, true);
if (val.isNil()) return val;
if (!target.isInstance(val)) throw obj.getRuntime().newTypeError(obj.getMetaClass() + "#" + convertMethod + " should return " + target.getName());
return val;
}
// rb_check_to_integer
public static IRubyObject checkIntegerType(Ruby runtime, IRubyObject obj, String method) {
if (obj instanceof RubyFixnum) return obj;
IRubyObject conv = TypeConverter.convertToType(obj, runtime.getInteger(), method, false);
return conv instanceof RubyInteger ? conv : runtime.getNil();
}
// 1.9 rb_check_to_float
public static IRubyObject checkFloatType(Ruby runtime, IRubyObject obj) {
if (obj instanceof RubyFloat) return obj;
if (!(obj instanceof RubyNumeric)) return runtime.getNil();
return TypeConverter.convertToTypeWithCheck(obj, runtime.getFloat(), "to_f");
}
// 1.9 rb_check_hash_type
public static IRubyObject checkHashType(Ruby runtime, IRubyObject obj) {
return TypeConverter.convertToTypeWithCheck(obj, runtime.getHash(), "to_hash");
}
public static IRubyObject handleUncoercibleObject(boolean raise, IRubyObject obj, RubyClass target) throws RaiseException {
if (raise) throw obj.getRuntime().newTypeError("can't convert " + typeAsString(obj) + " into " + target);
return obj.getRuntime().getNil();
}
}
