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view graal/com.oracle.truffle.ruby.runtime/src/com/oracle/truffle/ruby/runtime/methods/Arity.java @ 13563:fb846424299f
Truffle/Ruby: extend Instrumentation framework with language-agnostic interfaces for access to AST printing utilities and a Ruby implementation
author | Michael Van De Vanter <michael.van.de.vanter@oracle.com> |
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date | Tue, 07 Jan 2014 18:09:42 -0800 |
parents | 0fbee3eb71f0 |
children |
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/* * Copyright (c) 2013 Oracle and/or its affiliates. All rights reserved. This * code is released under a tri EPL/GPL/LGPL license. You can use it, * redistribute it and/or modify it under the terms of the: * * Eclipse Public License version 1.0 * GNU General Public License version 2 * GNU Lesser General Public License version 2.1 */ package com.oracle.truffle.ruby.runtime.methods; import com.oracle.truffle.api.*; import com.oracle.truffle.ruby.runtime.*; import com.oracle.truffle.ruby.runtime.control.*; /** * Represents the arity, or parameter contract, of a method. */ public class Arity { private final int minimum; public static final int NO_MINIMUM = 0; private final int maximum; public static final int NO_MAXIMUM = Integer.MAX_VALUE; public static final Arity NO_ARGS = new Arity(0, 0); public static final Arity ONE_ARG = new Arity(1, 1); public Arity(int minimum, int maximum) { this.minimum = minimum; this.maximum = maximum; } public void checkArguments(RubyContext context, Object[] arguments) { if (arguments.length < minimum || arguments.length > maximum) { CompilerDirectives.transferToInterpreter(); throw new RaiseException(context.getCoreLibrary().argumentError(arguments.length, minimum)); } } public int getMinimum() { return minimum; } public int getMaximum() { return maximum; } @Override public String toString() { return String.format("Arity(%d, %d)", minimum, maximum); } }