Mercurial > hg > graal-compiler
view graal/com.oracle.truffle.sl/src/com/oracle/truffle/sl/runtime/SLContext.java @ 21456:90fc2256ed37
Remove unused argument from snippet
author | Tom Rodriguez <tom.rodriguez@oracle.com> |
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date | Mon, 18 May 2015 14:32:14 -0700 |
parents | 0ef23ff7d5a1 |
children | 286aef83a9a7 |
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/* * Copyright (c) 2012, 2014, Oracle and/or its affiliates. All rights reserved. * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. * * This code is free software; you can redistribute it and/or modify it * under the terms of the GNU General Public License version 2 only, as * published by the Free Software Foundation. * * This code is distributed in the hope that it will be useful, but WITHOUT * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License * version 2 for more details (a copy is included in the LICENSE file that * accompanied this code). * * You should have received a copy of the GNU General Public License version * 2 along with this work; if not, write to the Free Software Foundation, * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. * * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA * or visit www.oracle.com if you need additional information or have any * questions. */ package com.oracle.truffle.sl.runtime; import java.io.*; import com.oracle.truffle.api.*; import com.oracle.truffle.api.dsl.*; import com.oracle.truffle.api.frame.*; import com.oracle.truffle.api.nodes.*; import com.oracle.truffle.api.object.*; import com.oracle.truffle.api.source.*; import com.oracle.truffle.sl.*; import com.oracle.truffle.sl.builtins.*; import com.oracle.truffle.sl.nodes.*; import com.oracle.truffle.sl.nodes.local.*; import com.oracle.truffle.sl.parser.*; /** * The run-time state of SL during execution. One context is instantiated before any source code is * parsed, and this context is passed around to all methods that need access to it. For example, the * context is used during {@link SLNodeFactory parsing} and by {@link SLBuiltinNode#getContext() * builtin functions}. * <p> * It would be an error to have two different context instances during the execution of one script. * However, if two separate scripts run in one Java VM at the same time, they have a different * context. Therefore, the context is not a singleton. */ public final class SLContext extends ExecutionContext { private static final Layout LAYOUT = Layout.createLayout(); private final BufferedReader input; private final PrintStream output; private final SLFunctionRegistry functionRegistry; private final Shape emptyShape; public SLContext(BufferedReader input, PrintStream output) { this.input = input; this.output = output; this.functionRegistry = new SLFunctionRegistry(); installBuiltins(); this.emptyShape = LAYOUT.createShape(new ObjectType()); } @Override public String getLanguageShortName() { return "Simple"; } /** * Returns the default input, i.e., the source for the {@link SLReadlnBuiltin}. To allow unit * testing, we do not use {@link System#in} directly. */ public BufferedReader getInput() { return input; } /** * The default default, i.e., the output for the {@link SLPrintlnBuiltin}. To allow unit * testing, we do not use {@link System#out} directly. */ public PrintStream getOutput() { return output; } /** * Returns the registry of all functions that are currently defined. */ public SLFunctionRegistry getFunctionRegistry() { return functionRegistry; } /** * Adds all builtin functions to the {@link SLFunctionRegistry}. This method lists all * {@link SLBuiltinNode builtin implementation classes}. */ private void installBuiltins() { installBuiltin(SLReadlnBuiltinFactory.getInstance()); installBuiltin(SLPrintlnBuiltinFactory.getInstance()); installBuiltin(SLNanoTimeBuiltinFactory.getInstance()); installBuiltin(SLDefineFunctionBuiltinFactory.getInstance()); installBuiltin(SLStackTraceBuiltinFactory.getInstance()); installBuiltin(SLHelloEqualsWorldBuiltinFactory.getInstance()); installBuiltin(SLAssertTrueBuiltinFactory.getInstance()); installBuiltin(SLAssertFalseBuiltinFactory.getInstance()); installBuiltin(SLNewObjectBuiltinFactory.getInstance()); } public void installBuiltin(NodeFactory<? extends SLBuiltinNode> factory) { /* * The builtin node factory is a class that is automatically generated by the Truffle DSL. * The signature returned by the factory reflects the signature of the @Specialization * methods in the builtin classes. */ int argumentCount = factory.getExecutionSignature().size(); SLExpressionNode[] argumentNodes = new SLExpressionNode[argumentCount]; /* * Builtin functions are like normal functions, i.e., the arguments are passed in as an * Object[] array encapsulated in SLArguments. A SLReadArgumentNode extracts a parameter * from this array. */ for (int i = 0; i < argumentCount; i++) { argumentNodes[i] = new SLReadArgumentNode(null, i); } /* Instantiate the builtin node. This node performs the actual functionality. */ SLBuiltinNode builtinBodyNode = factory.createNode(argumentNodes, this); /* The name of the builtin function is specified via an annotation on the node class. */ String name = lookupNodeInfo(builtinBodyNode.getClass()).shortName(); /* Wrap the builtin in a RootNode. Truffle requires all AST to start with a RootNode. */ SLRootNode rootNode = new SLRootNode(this, new FrameDescriptor(), builtinBodyNode, name); /* Register the builtin function in our function registry. */ getFunctionRegistry().register(name, rootNode); } public static NodeInfo lookupNodeInfo(Class<?> clazz) { if (clazz == null) { return null; } NodeInfo info = clazz.getAnnotation(NodeInfo.class); if (info != null) { return info; } else { return lookupNodeInfo(clazz.getSuperclass()); } } /** * This function will parse the given source code, parse the code using the {@link Parser}, and * then execute the function named main. To use this method with instrumentation, * setASTNodeProber must have been already called. There is currently no guard to check if this * is the case. <br/> * Due to the experimental nature of the instrumentation framework, the parse that happens in * this method will remove any previously added instrumentation. * * @param source The {@link Source} to execute. */ public void executeMain(Source source) { Parser.parseSL(this, source); SLFunction main = getFunctionRegistry().lookup("main"); if (main.getCallTarget() == null) { throw new SLException("No function main() defined in SL source file."); } main.getCallTarget().call(); } public DynamicObject createObject() { return LAYOUT.newInstance(emptyShape); } public static boolean isSLObject(Object value) { return LAYOUT.getType().isInstance(value); } public static DynamicObject castSLObject(Object value) { return LAYOUT.getType().cast(value); } }