Mercurial > hg > graal-compiler
view graal/com.oracle.truffle.ruby.parser/src/com/oracle/truffle/ruby/parser/JRubyParser.java @ 13780:d6ac7ebead35
canonicalize a LoadField on a null constant object to deopt
author | Lukas Stadler <lukas.stadler@jku.at> |
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date | Tue, 28 Jan 2014 14:39:48 +0100 |
parents | 64fa70319890 |
children | 3f27e57439ed |
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/* * Copyright (c) 2013, 2014 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.parser; import java.io.*; import com.oracle.truffle.api.*; import com.oracle.truffle.api.frame.*; import com.oracle.truffle.api.nodes.*; import com.oracle.truffle.ruby.nodes.*; import com.oracle.truffle.ruby.nodes.control.*; import com.oracle.truffle.ruby.nodes.literal.*; import com.oracle.truffle.ruby.nodes.methods.*; import com.oracle.truffle.ruby.runtime.*; import com.oracle.truffle.ruby.runtime.control.*; import com.oracle.truffle.ruby.runtime.core.*; import com.oracle.truffle.ruby.runtime.methods.*; public class JRubyParser implements RubyParser { private long nextReturnID = 0; private final RubyNodeInstrumenter instrumenter; public JRubyParser() { this(new DefaultRubyNodeInstrumenter()); } public JRubyParser(RubyNodeInstrumenter instrumenter) { assert instrumenter != null; this.instrumenter = instrumenter; } @Override public RubyParserResult parse(RubyContext context, Source source, ParserContext parserContext, MaterializedFrame parentFrame) { // Set up the JRuby parser final org.jrubyparser.Parser parser = new org.jrubyparser.Parser(); // TODO(cs) should this get a new unique method identifier or not? final TranslatorEnvironment environment = new TranslatorEnvironment(context, environmentForFrame(context, parentFrame), this, allocateReturnID(), true, true, new UniqueMethodIdentifier()); // All parsing contexts have a visibility slot at their top level environment.addMethodDeclarationSlots(); final org.jrubyparser.LocalStaticScope staticScope = new org.jrubyparser.LocalStaticScope(null); if (parentFrame != null) { /* * Note that jruby-parser will be mistaken about how deep the existing variables are, * but that doesn't matter as we look them up ourselves after being told their in some * parent scope. */ MaterializedFrame frame = parentFrame; while (frame != null) { for (FrameSlot slot : frame.getFrameDescriptor().getSlots()) { if (slot.getIdentifier() instanceof String) { final String name = (String) slot.getIdentifier(); if (staticScope.exists(name) == -1) { staticScope.assign(null, name, null); } } } frame = frame.getArguments(RubyArguments.class).getDeclarationFrame(); } } final org.jrubyparser.parser.ParserConfiguration parserConfiguration = new org.jrubyparser.parser.ParserConfiguration(0, org.jrubyparser.CompatVersion.RUBY2_0, staticScope); // Parse to the JRuby AST org.jrubyparser.ast.RootNode node; try { node = (org.jrubyparser.ast.RootNode) parser.parse(source.getName(), new StringReader(source.getCode()), parserConfiguration); } catch (UnsupportedOperationException | org.jrubyparser.lexer.SyntaxException e) { String message = e.getMessage(); if (message == null) { message = "(no message)"; } throw new RaiseException(new RubyException(context.getCoreLibrary().getSyntaxErrorClass(), message)); } if (context.getConfiguration().getPrintParseTree()) { System.err.println(node); } // Translate to Ruby Truffle nodes final Translator translator; if (parserContext == RubyParser.ParserContext.MODULE) { translator = new ModuleTranslator(context, null, environment, source); } else { translator = new Translator(context, null, environment, source); } RubyNode truffleNode; final DebugManager debugManager = context.getDebugManager(); try { if (debugManager != null) { debugManager.notifyStartLoading(source); } if (node.getBody() == null) { truffleNode = new NilNode(context, null); } else { truffleNode = (RubyNode) node.getBody().accept(translator); } // Load flip-flop states if (environment.getFlipFlopStates().size() > 0) { truffleNode = new SequenceNode(context, truffleNode.getSourceSection(), translator.initFlipFlopStates(truffleNode.getSourceSection()), truffleNode); } // Catch next truffleNode = new CatchNextNode(context, truffleNode.getSourceSection(), truffleNode); // Catch return truffleNode = new CatchReturnAsErrorNode(context, truffleNode.getSourceSection(), truffleNode); // Shell result if (parserContext == RubyParser.ParserContext.SHELL) { truffleNode = new ShellResultNode(context, truffleNode.getSourceSection(), truffleNode); } // Root Node String indicativeName; switch (parserContext) { case TOP_LEVEL: indicativeName = "(main)"; break; case SHELL: indicativeName = "(shell)"; break; case MODULE: indicativeName = "(module)"; break; default: throw new UnsupportedOperationException(); } final RootNode root = new RubyRootNode(truffleNode.getSourceSection(), environment.getFrameDescriptor(), indicativeName, truffleNode); // Return the root and the frame descriptor return new RubyParserResult(root); } finally { if (debugManager != null) { debugManager.notifyFinishedLoading(source); } } } public long allocateReturnID() { if (nextReturnID == Long.MAX_VALUE) { throw new RuntimeException("Return IDs exhausted"); } final long allocated = nextReturnID; nextReturnID++; return allocated; } public RubyNodeInstrumenter getNodeInstrumenter() { return instrumenter; } private TranslatorEnvironment environmentForFrame(RubyContext context, MaterializedFrame frame) { if (frame == null) { return null; } else { final MaterializedFrame parent = frame.getArguments(RubyArguments.class).getDeclarationFrame(); return new TranslatorEnvironment(context, environmentForFrame(context, parent), frame.getFrameDescriptor(), this, allocateReturnID(), true, true, new UniqueMethodIdentifier()); } } }