| 1 | /* |
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| 2 | * Load.java |
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| 3 | * |
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| 4 | * Copyright (C) 2002-2007 Peter Graves |
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| 5 | * $Id: Load.java 15705 2023-06-06 06:38:45Z mevenson $ |
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| 6 | * |
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| 7 | * This program is free software; you can redistribute it and/or |
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| 8 | * modify it under the terms of the GNU General Public License |
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| 9 | * as published by the Free Software Foundation; either version 2 |
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| 10 | * of the License, or (at your option) any later version. |
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| 11 | * |
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| 12 | * This program is distributed in the hope that it will be useful, |
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| 13 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
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| 14 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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| 15 | * GNU General Public License for more details. |
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| 16 | * |
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| 17 | * You should have received a copy of the GNU General Public License |
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| 18 | * along with this program; if not, write to the Free Software |
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| 19 | * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. |
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| 20 | * |
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| 21 | * As a special exception, the copyright holders of this library give you |
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| 22 | * permission to link this library with independent modules to produce an |
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| 23 | * executable, regardless of the license terms of these independent |
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| 24 | * modules, and to copy and distribute the resulting executable under |
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| 25 | * terms of your choice, provided that you also meet, for each linked |
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| 26 | * independent module, the terms and conditions of the license of that |
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| 27 | * module. An independent module is a module which is not derived from |
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| 28 | * or based on this library. If you modify this library, you may extend |
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| 29 | * this exception to your version of the library, but you are not |
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| 30 | * obligated to do so. If you do not wish to do so, delete this |
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| 31 | * exception statement from your version. |
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| 32 | */ |
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| 33 | |
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| 34 | package org.armedbear.lisp; |
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| 35 | |
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| 36 | import static org.armedbear.lisp.Lisp.*; |
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| 37 | |
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| 38 | import java.io.IOException; |
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| 39 | import java.io.InputStream; |
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| 40 | import java.net.URL; |
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| 41 | import java.text.MessageFormat; |
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| 42 | |
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| 43 | /* This file holds ABCL's (FASL and non-FASL) loading behaviours. |
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| 44 | * |
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| 45 | * The loading process works like this: |
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| 46 | * The loader associates the input filename with a special variable |
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| 47 | * and starts evaluating the forms in the file. |
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| 48 | * |
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| 49 | * If one of the forms is (INIT-FASL :VERSION <version>), from that |
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| 50 | * point the file is taken to be a FASL. |
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| 51 | * The FASL loader takes over and retrieves the file being loaded |
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| 52 | * from the special variable and continues loading from there. |
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| 53 | * |
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| 54 | */ |
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| 55 | public final class Load |
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| 56 | { |
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| 57 | public static final LispObject load(String filename) |
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| 58 | { |
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| 59 | final LispThread thread = LispThread.currentThread(); |
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| 60 | return load((Pathname)Pathname.create(filename), |
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| 61 | Symbol.LOAD_VERBOSE.symbolValue(thread) != NIL, |
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| 62 | Symbol.LOAD_PRINT.symbolValue(thread) != NIL, |
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| 63 | true); |
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| 64 | } |
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| 65 | |
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| 66 | /** @return Pathname of loadable file based on NAME, or null if |
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| 67 | * none can be determined. */ |
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| 68 | private static final Pathname findLoadableFile(Pathname name) { |
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| 69 | LispObject truename = Symbol.PROBE_FILE.execute(name); |
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| 70 | if (truename instanceof Pathname) { |
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| 71 | Pathname t = (Pathname)truename; |
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| 72 | if (t.getName() != NIL |
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| 73 | && t.getName() != null) { |
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| 74 | return t; |
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| 75 | } |
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| 76 | } |
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| 77 | final String COMPILE_FILE_TYPE = Lisp._COMPILE_FILE_TYPE_.symbolValue().getStringValue(); |
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| 78 | if (name.getType() == NIL |
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| 79 | && (name.getName() != NIL || name.getName() != null)) { |
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| 80 | Pathname lispPathname = Pathname.create(name); |
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| 81 | lispPathname.setType(new SimpleString("lisp")); |
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| 82 | LispObject lisp = Symbol.PROBE_FILE.execute(lispPathname); |
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| 83 | Pathname abclPathname = Pathname.create(name); |
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| 84 | abclPathname.setType(new SimpleString(COMPILE_FILE_TYPE)); |
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| 85 | LispObject abcl = Symbol.PROBE_FILE.execute(abclPathname); |
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| 86 | if (lisp instanceof Pathname && abcl instanceof Pathname) { |
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| 87 | lispPathname = (Pathname)lisp; |
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| 88 | abclPathname = (Pathname)abcl; |
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| 89 | long lispLastModified = lispPathname.getLastModified(); |
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| 90 | long abclLastModified = abclPathname.getLastModified(); |
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| 91 | if (abclLastModified > lispLastModified) { |
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| 92 | return abclPathname; // fasl file is newer |
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| 93 | } else { |
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| 94 | return lispPathname; |
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| 95 | } |
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| 96 | } else if (abcl instanceof Pathname) { |
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| 97 | return (Pathname) abcl; |
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| 98 | } else if (lisp instanceof Pathname) { |
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| 99 | return (Pathname) lisp; |
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| 100 | } |
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| 101 | } |
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| 102 | if (name.isJar()) { |
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| 103 | if (name.getType().equals(NIL)) { |
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| 104 | name.setType(COMPILE_FILE_INIT_FASL_TYPE); |
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| 105 | Pathname result = findLoadableFile(name); |
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| 106 | if (result != null) { |
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| 107 | return result; |
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| 108 | } |
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| 109 | name.setType(new SimpleString(COMPILE_FILE_TYPE)); |
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| 110 | result = findLoadableFile(name); |
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| 111 | if (result != null) { |
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| 112 | return result; |
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| 113 | } |
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| 114 | } |
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| 115 | } |
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| 116 | return null; |
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| 117 | } |
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| 118 | |
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| 119 | public static final LispObject load(Pathname pathname, |
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| 120 | boolean verbose, |
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| 121 | boolean print, |
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| 122 | boolean ifDoesNotExist) |
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| 123 | { |
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| 124 | return load(pathname, verbose, print, ifDoesNotExist, false, Keyword.DEFAULT); |
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| 125 | } |
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| 126 | |
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| 127 | public static final LispObject load(InputStream in) |
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| 128 | { |
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| 129 | return load(in, new SimpleString("UTF-8")); |
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| 130 | } |
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| 131 | |
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| 132 | public static final LispObject load(InputStream in, LispObject format) { |
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| 133 | Stream stream = new Stream(Symbol.SYSTEM_STREAM, in, Symbol.CHARACTER, |
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| 134 | format); |
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| 135 | final LispThread thread = LispThread.currentThread(); |
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| 136 | return loadFileFromStream(null, |
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| 137 | null, |
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| 138 | stream, |
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| 139 | Symbol.LOAD_VERBOSE.symbolValue(thread) != NIL, |
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| 140 | Symbol.LOAD_PRINT.symbolValue(thread) != NIL, |
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| 141 | false); |
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| 142 | } |
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| 143 | |
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| 144 | |
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| 145 | public static final LispObject load(final Pathname pathname, |
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| 146 | boolean verbose, |
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| 147 | boolean print, |
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| 148 | boolean ifDoesNotExist, |
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| 149 | boolean returnLastResult, |
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| 150 | LispObject externalFormat) |
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| 151 | { |
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| 152 | Pathname mergedPathname = null; |
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| 153 | if (!pathname.isAbsolute() && !pathname.isJar()) { |
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| 154 | Pathname pathnameDefaults |
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| 155 | = coerceToPathname(Symbol.DEFAULT_PATHNAME_DEFAULTS.symbolValue()); |
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| 156 | mergedPathname = Pathname.mergePathnames(pathname, pathnameDefaults); |
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| 157 | } |
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| 158 | Pathname loadableFile = findLoadableFile(mergedPathname != null ? mergedPathname : pathname); |
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| 159 | Pathname truename = (loadableFile != null |
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| 160 | ? (Pathname)Symbol.PROBE_FILE.execute(loadableFile) |
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| 161 | : null); |
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| 162 | |
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| 163 | if (truename == null || truename.equals(NIL)) { |
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| 164 | if (ifDoesNotExist) { |
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| 165 | return error(new FileError("File not found: " + pathname.princToString(), pathname)); |
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| 166 | } else { |
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| 167 | Debug.warn("Failed to load " + pathname.getNamestring()); |
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| 168 | return NIL; |
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| 169 | } |
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| 170 | } |
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| 171 | |
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| 172 | if (ZipCache.checkZipFile(truename)) { |
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| 173 | if (truename instanceof JarPathname) { |
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| 174 | truename = JarPathname.createFromEntry((JarPathname)truename); |
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| 175 | } else { |
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| 176 | truename = JarPathname.createFromPathname(truename); |
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| 177 | } |
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| 178 | Pathname loader = Pathname.create("__loader__._"); // FIXME use constants |
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| 179 | mergedPathname = (Pathname)Symbol.MERGE_PATHNAMES.execute(loader, truename); |
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| 180 | |
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| 181 | LispObject initTruename = Symbol.PROBE_FILE.execute(mergedPathname); |
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| 182 | if (initTruename.equals(NIL)) { |
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| 183 | // Maybe the enclosing JAR has been renamed? |
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| 184 | Pathname p = Pathname.create(mergedPathname); |
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| 185 | p.setName(Keyword.WILD); |
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| 186 | LispObject result = Symbol.MATCH_WILD_JAR_PATHNAME.execute(p); |
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| 187 | |
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| 188 | if (result instanceof Cons |
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| 189 | && ((Cons)result).length() == 1 |
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| 190 | && ((Cons)result).car() instanceof Pathname) { |
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| 191 | initTruename = (Pathname)result.car(); |
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| 192 | } else { |
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| 193 | String errorMessage |
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| 194 | = "Loadable FASL not found for " |
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| 195 | + pathname.printObject() |
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| 196 | + " in " |
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| 197 | + mergedPathname.printObject(); |
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| 198 | if (ifDoesNotExist) { |
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| 199 | return error(new FileError(errorMessage, mergedPathname)); |
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| 200 | } else { |
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| 201 | Debug.trace(errorMessage); |
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| 202 | return NIL; |
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| 203 | } |
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| 204 | } |
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| 205 | } |
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| 206 | truename = (Pathname)initTruename; |
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| 207 | } |
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| 208 | |
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| 209 | InputStream in = truename.getInputStream(); |
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| 210 | Debug.assertTrue(in != null); |
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| 211 | |
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| 212 | try { |
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| 213 | return loadFileFromStream(pathname, truename, |
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| 214 | new Stream(Symbol.SYSTEM_STREAM, in, Symbol.CHARACTER, externalFormat), |
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| 215 | verbose, print, false, returnLastResult); |
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| 216 | } |
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| 217 | finally { |
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| 218 | if (in != null) { |
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| 219 | try { |
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| 220 | in.close(); |
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| 221 | } |
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| 222 | catch (IOException e) { |
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| 223 | return error(new LispError(e.getMessage())); |
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| 224 | } |
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| 225 | } |
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| 226 | } |
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| 227 | } |
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| 228 | |
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| 229 | public static LispObject loadSystemFile(String filename, boolean auto) |
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| 230 | { |
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| 231 | LispThread thread = LispThread.currentThread(); |
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| 232 | if (auto) { |
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| 233 | final SpecialBindingsMark mark = thread.markSpecialBindings(); |
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| 234 | // Due to autoloading, we're not sure about the loader state. |
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| 235 | // Make sure that all reader relevant variables have known state. |
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| 236 | thread.bindSpecial(Symbol.CURRENT_READTABLE, |
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| 237 | STANDARD_READTABLE.symbolValue(thread)); |
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| 238 | thread.bindSpecial(Symbol.READ_BASE, Fixnum.constants[10]); |
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| 239 | thread.bindSpecial(Symbol.READ_SUPPRESS, NIL); |
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| 240 | thread.bindSpecial(Symbol.READ_EVAL, T); |
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| 241 | thread.bindSpecial(Symbol.READ_DEFAULT_FLOAT_FORMAT, Symbol.SINGLE_FLOAT); |
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| 242 | thread.bindSpecial(Symbol._PACKAGE_, PACKAGE_CL_USER); |
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| 243 | try { |
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| 244 | return loadSystemFile(filename, |
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| 245 | _AUTOLOAD_VERBOSE_.symbolValue(thread) != NIL, |
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| 246 | Symbol.LOAD_PRINT.symbolValue(thread) != NIL, |
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| 247 | auto); |
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| 248 | } |
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| 249 | finally { |
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| 250 | thread.resetSpecialBindings(mark); |
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| 251 | } |
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| 252 | } else { |
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| 253 | return loadSystemFile(filename, |
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| 254 | Symbol.LOAD_VERBOSE.symbolValue(thread) != NIL, |
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| 255 | Symbol.LOAD_PRINT.symbolValue(thread) != NIL, |
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| 256 | auto); |
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| 257 | } |
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| 258 | } |
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| 259 | |
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| 260 | private static final Symbol FASL_LOADER = PACKAGE_SYS.intern("*FASL-LOADER*"); |
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| 261 | /** A file with this type in a packed FASL denotes the initial loader */ |
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| 262 | static final LispObject COMPILE_FILE_INIT_FASL_TYPE = new SimpleString("_"); |
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| 263 | |
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| 264 | private static final Pathname coercePathnameOrNull(LispObject p) { |
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| 265 | if (p == null) { |
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| 266 | return null; |
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| 267 | } |
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| 268 | Pathname result = null; |
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| 269 | try { |
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| 270 | result = (Pathname)p; |
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| 271 | } catch (Throwable t) { // XXX narrow me! |
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| 272 | return null; |
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| 273 | } |
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| 274 | return result; |
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| 275 | } |
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| 276 | |
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| 277 | |
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| 278 | public static final LispObject loadSystemFile(final String filename, |
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| 279 | boolean verbose, |
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| 280 | boolean print, |
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| 281 | boolean auto) |
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| 282 | { |
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| 283 | InputStream in = null; |
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| 284 | Pathname pathname = null; |
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| 285 | Pathname truename = null; |
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| 286 | pathname = (Pathname)Pathname.create(filename); |
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| 287 | LispObject bootPath = Site.getLispHome(); |
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| 288 | Pathname mergedPathname; |
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| 289 | if (bootPath instanceof Pathname) { |
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| 290 | mergedPathname = (Pathname)Symbol.MERGE_PATHNAMES.execute(pathname, bootPath); |
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| 291 | // So a PROBE-FILE won't attempt to merge when |
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| 292 | // *DEFAULT-PATHNAME-DEFAULTS* is a JAR |
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| 293 | if (mergedPathname.getDevice().equals(NIL) |
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| 294 | && !Utilities.isPlatformWindows) { |
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| 295 | mergedPathname.setDevice(Keyword.UNSPECIFIC); |
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| 296 | } |
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| 297 | } else { |
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| 298 | mergedPathname = pathname; |
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| 299 | } |
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| 300 | URL url = null; |
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| 301 | Pathname loadableFile = findLoadableFile(mergedPathname); |
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| 302 | if (loadableFile == null) { |
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| 303 | truename = null; |
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| 304 | } else { |
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| 305 | truename = (Pathname)Symbol.PROBE_FILE.execute(loadableFile); |
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| 306 | } |
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| 307 | |
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| 308 | final String COMPILE_FILE_TYPE |
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| 309 | = Lisp._COMPILE_FILE_TYPE_.symbolValue().getStringValue(); |
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| 310 | |
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| 311 | if (truename == null || truename.equals(NIL) || bootPath.equals(NIL)) { |
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| 312 | // Make an attempt to use the boot classpath |
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| 313 | String path = pathname.asEntryPath(); |
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| 314 | url = Lisp.class.getResource(path); |
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| 315 | if (url == null || url.toString().endsWith("/")) { |
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| 316 | url = Lisp.class.getResource(path.replace('-', '_') + "." + COMPILE_FILE_TYPE); |
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| 317 | if (url == null) { |
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| 318 | url = Lisp.class.getResource(path + ".lisp"); |
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| 319 | } |
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| 320 | } |
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| 321 | if (url == null) { |
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| 322 | return error(new LispError("Failed to find loadable system file " |
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| 323 | + "'" + path + "'" |
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| 324 | + " in boot classpath.")); |
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| 325 | } |
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| 326 | if (!bootPath.equals(NIL)) { |
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| 327 | Pathname urlPathname = (Pathname)URLPathname.create(url); |
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| 328 | loadableFile = findLoadableFile(urlPathname); |
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| 329 | truename = (Pathname)Symbol.PROBE_FILE.execute(loadableFile); |
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| 330 | if (truename.equals(NIL)) { |
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| 331 | return error(new LispError("Failed to find loadable system file in boot classpath " |
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| 332 | + "'" + url + "'")); |
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| 333 | } |
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| 334 | } else { |
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| 335 | truename = null; // We can't represent the FASL in a Pathname (q.v. OSGi) |
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| 336 | } |
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| 337 | } |
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| 338 | |
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| 339 | // Look for a init FASL inside a packed FASL |
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| 340 | if (truename != null |
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| 341 | && truename.getType().princToString().equals(COMPILE_FILE_TYPE) && ZipCache.checkZipFile(truename)) { |
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| 342 | Pathname init = (Pathname)Pathname.create(truename.getNamestring()); |
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| 343 | init.setType(COMPILE_FILE_INIT_FASL_TYPE); |
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| 344 | init.setName(new SimpleString("__loader__")); |
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| 345 | LispObject t = Symbol.PROBE_FILE.execute(init); |
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| 346 | if (t instanceof Pathname) { |
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| 347 | truename = (Pathname)t; |
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| 348 | } else { |
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| 349 | return error (new LispError("Failed to find loadable init FASL in " |
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| 350 | + "'" + init.getNamestring() + "'")); |
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| 351 | } |
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| 352 | } |
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| 353 | |
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| 354 | if (truename != null) { |
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| 355 | in = truename.getInputStream(); |
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| 356 | } else { |
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| 357 | try { |
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| 358 | Debug.assertTrue(url != null); |
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| 359 | in = url.openStream(); |
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| 360 | } catch (IOException e) { |
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| 361 | error(new FileError("Failed to load system file: " |
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| 362 | + "'" + filename + "'" |
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| 363 | + " from URL: " |
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| 364 | + "'" + url + "'")); |
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| 365 | } |
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| 366 | } |
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| 367 | |
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| 368 | if (in != null) { |
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| 369 | final LispThread thread = LispThread.currentThread(); |
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| 370 | final SpecialBindingsMark mark = thread.markSpecialBindings(); |
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| 371 | thread.bindSpecial(_WARN_ON_REDEFINITION_, NIL); |
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| 372 | thread.bindSpecial(FASL_LOADER, NIL); |
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| 373 | try { |
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| 374 | Stream stream = new Stream(Symbol.SYSTEM_STREAM, in, Symbol.CHARACTER); |
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| 375 | return loadFileFromStream(pathname, truename, stream, |
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| 376 | verbose, print, auto); |
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| 377 | } finally { |
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| 378 | thread.resetSpecialBindings(mark); |
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| 379 | try { |
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| 380 | in.close(); |
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| 381 | } |
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| 382 | catch (IOException e) { |
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| 383 | return error(new LispError(e.getMessage())); |
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| 384 | } |
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| 385 | } |
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| 386 | } |
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| 387 | return error(new FileError("Failed to load system file: " |
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| 388 | + "'" + filename + "'" |
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| 389 | + " resolved as " |
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| 390 | + "'" + mergedPathname + "'" , |
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| 391 | truename)); |
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| 392 | } |
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| 393 | |
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| 394 | // ### *fasl-version* |
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| 395 | // internal symbol |
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| 396 | static final Symbol _FASL_VERSION_ = |
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| 397 | exportConstant("*FASL-VERSION*", PACKAGE_SYS, Fixnum.getInstance(43)); |
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| 398 | |
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| 399 | // ### *fasl-external-format* |
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| 400 | // internal symbol |
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| 401 | private static final Symbol _FASL_EXTERNAL_FORMAT_ = |
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| 402 | internConstant("*FASL-EXTERNAL-FORMAT*", PACKAGE_SYS, |
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| 403 | new SimpleString("UTF-8")); |
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| 404 | |
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| 405 | // ### *fasl-uninterned-symbols* |
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| 406 | // internal symbol |
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| 407 | /** |
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| 408 | * This variable gets bound to NIL upon loading a FASL, but |
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| 409 | * gets set to a vector of symbols as one of the first actions |
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| 410 | * by the FASL itself. |
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| 411 | * |
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| 412 | */ |
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| 413 | public static final Symbol _FASL_UNINTERNED_SYMBOLS_ = |
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| 414 | internSpecial("*FASL-UNINTERNED-SYMBOLS*", PACKAGE_SYS, NIL); |
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| 415 | |
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| 416 | // Function to access the uninterned symbols "array" |
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| 417 | public final static LispObject getUninternedSymbol(int n) { |
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| 418 | LispThread thread = LispThread.currentThread(); |
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| 419 | LispObject uninternedSymbols = |
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| 420 | Load._FASL_UNINTERNED_SYMBOLS_.symbolValue(thread); |
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| 421 | |
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| 422 | if (! (uninternedSymbols instanceof Cons)) // it must be a vector |
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| 423 | return uninternedSymbols.AREF(n); |
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| 424 | |
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| 425 | // During normal loading, we won't get to this bit, however, |
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| 426 | // with eval-when processing, we may need to fall back to |
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| 427 | // *FASL-UNINTERNED-SYMBOLS* being an alist structure |
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| 428 | LispObject label = LispInteger.getInstance(n); |
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| 429 | while (uninternedSymbols != NIL) |
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| 430 | { |
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| 431 | LispObject item = uninternedSymbols.car(); |
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| 432 | if (label.eql(item.cdr())) |
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| 433 | return item.car(); |
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| 434 | |
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| 435 | uninternedSymbols = uninternedSymbols.cdr(); |
|---|
| 436 | } |
|---|
| 437 | return error(new LispError("No entry for uninterned symbol.")); |
|---|
| 438 | } |
|---|
| 439 | |
|---|
| 440 | |
|---|
| 441 | // ### init-fasl &key version |
|---|
| 442 | private static final Primitive INIT_FASL = new init_fasl(); |
|---|
| 443 | private static class init_fasl extends Primitive { |
|---|
| 444 | init_fasl() { |
|---|
| 445 | super("init-fasl", PACKAGE_SYS, true, "&key version"); |
|---|
| 446 | } |
|---|
| 447 | @Override |
|---|
| 448 | public LispObject execute(LispObject first, LispObject second) |
|---|
| 449 | |
|---|
| 450 | { |
|---|
| 451 | final LispThread thread = LispThread.currentThread(); |
|---|
| 452 | if (first == Keyword.VERSION) { |
|---|
| 453 | if (second.eql(_FASL_VERSION_.getSymbolValue())) { |
|---|
| 454 | // OK |
|---|
| 455 | thread.bindSpecial(_FASL_UNINTERNED_SYMBOLS_, NIL); |
|---|
| 456 | thread.bindSpecial(_SOURCE_, NIL); |
|---|
| 457 | return faslLoadStream(thread); |
|---|
| 458 | } |
|---|
| 459 | } |
|---|
| 460 | return |
|---|
| 461 | error(new SimpleError("FASL version mismatch; found '" |
|---|
| 462 | + second.princToString() + "' but expected '" |
|---|
| 463 | + _FASL_VERSION_.getSymbolValue().princToString() |
|---|
| 464 | + "' in " |
|---|
| 465 | + Symbol.LOAD_PATHNAME.symbolValue(thread).princToString() |
|---|
| 466 | + " (try recompiling the file)")); |
|---|
| 467 | } |
|---|
| 468 | } |
|---|
| 469 | |
|---|
| 470 | private static final LispObject loadFileFromStream(Pathname pathname, |
|---|
| 471 | Pathname truename, |
|---|
| 472 | Stream in, |
|---|
| 473 | boolean verbose, |
|---|
| 474 | boolean print, |
|---|
| 475 | boolean auto) |
|---|
| 476 | { |
|---|
| 477 | return loadFileFromStream(pathname == null ? NIL : pathname, |
|---|
| 478 | truename == null ? NIL : truename, |
|---|
| 479 | in, verbose, print, auto, false); |
|---|
| 480 | } |
|---|
| 481 | |
|---|
| 482 | private static Symbol[] savedSpecials = |
|---|
| 483 | new Symbol[] { // CLHS Specified |
|---|
| 484 | Symbol.CURRENT_READTABLE, Symbol._PACKAGE_, |
|---|
| 485 | // Compiler policy |
|---|
| 486 | _SPEED_, _SPACE_, _SAFETY_, _DEBUG_, _EXPLAIN_ }; |
|---|
| 487 | |
|---|
| 488 | // A nil TRUENAME signals a load from stream which has no possible path |
|---|
| 489 | private static final LispObject loadFileFromStream(LispObject pathname, |
|---|
| 490 | LispObject truename, |
|---|
| 491 | Stream in, |
|---|
| 492 | boolean verbose, |
|---|
| 493 | boolean print, |
|---|
| 494 | boolean auto, |
|---|
| 495 | boolean returnLastResult) |
|---|
| 496 | |
|---|
| 497 | { |
|---|
| 498 | long start = System.currentTimeMillis(); |
|---|
| 499 | final LispThread thread = LispThread.currentThread(); |
|---|
| 500 | final SpecialBindingsMark mark = thread.markSpecialBindings(); |
|---|
| 501 | |
|---|
| 502 | for (Symbol special : savedSpecials) |
|---|
| 503 | thread.bindSpecialToCurrentValue(special); |
|---|
| 504 | |
|---|
| 505 | thread.bindSpecial(_BACKQUOTE_COUNT_, Fixnum.getInstance(0)); |
|---|
| 506 | int loadDepth = Fixnum.getValue(_LOAD_DEPTH_.symbolValue(thread)); |
|---|
| 507 | thread.bindSpecial(_LOAD_DEPTH_, Fixnum.getInstance(++loadDepth)); |
|---|
| 508 | final String prefix = getLoadVerbosePrefix(loadDepth); |
|---|
| 509 | try { |
|---|
| 510 | thread.bindSpecial(Symbol.LOAD_PATHNAME, pathname); |
|---|
| 511 | |
|---|
| 512 | // The motivation behind the following piece of complexity |
|---|
| 513 | // is the need to preserve the semantics of |
|---|
| 514 | // *LOAD-TRUENAME* as always containing the truename of |
|---|
| 515 | // the current "Lisp file". Since an ABCL packed FASL |
|---|
| 516 | // actually has a Lisp file (aka "the init FASL") and one |
|---|
| 517 | // or more Java classes from the compiler, we endeavor to |
|---|
| 518 | // make *LOAD-TRUENAME* refer to the "overall" truename so |
|---|
| 519 | // that a (LOAD *LOAD-TRUENAME*) would be equivalent to |
|---|
| 520 | // reloading the complete current "Lisp file". If this |
|---|
| 521 | // value diverges from the "true" truename, we set the |
|---|
| 522 | // symbol SYS::*LOAD-TRUENAME-FASL* to that divergent |
|---|
| 523 | // value. Currently the only code that uses this value is |
|---|
| 524 | // Lisp.readFunctionBytes(). |
|---|
| 525 | Pathname truePathname = null; |
|---|
| 526 | if (!truename.equals(NIL)) { |
|---|
| 527 | if (truename instanceof Pathname) { |
|---|
| 528 | if (truename instanceof JarPathname) { |
|---|
| 529 | truePathname = new JarPathname(); |
|---|
| 530 | } else if (truename instanceof URLPathname) { |
|---|
| 531 | truePathname = new URLPathname(); |
|---|
| 532 | } else { |
|---|
| 533 | truePathname = new Pathname(); |
|---|
| 534 | } |
|---|
| 535 | truePathname.copyFrom((Pathname)truename); |
|---|
| 536 | } else if (truename instanceof AbstractString) { |
|---|
| 537 | truePathname = (Pathname)Pathname.create(truename.getStringValue()); |
|---|
| 538 | } else { |
|---|
| 539 | Debug.assertTrue(false); |
|---|
| 540 | } |
|---|
| 541 | if (truePathname.getType().equal(Lisp._COMPILE_FILE_TYPE_.symbolValue(thread)) |
|---|
| 542 | || truePathname.getType().equal(COMPILE_FILE_INIT_FASL_TYPE)) { |
|---|
| 543 | Pathname truenameFasl = Pathname.create(truePathname); |
|---|
| 544 | thread.bindSpecial(Symbol.LOAD_TRUENAME_FASL, truenameFasl); |
|---|
| 545 | } |
|---|
| 546 | if (truePathname.getType().equal(COMPILE_FILE_INIT_FASL_TYPE) |
|---|
| 547 | && truePathname.isJar()) { |
|---|
| 548 | // We set *LOAD-TRUENAME* to the argument that a |
|---|
| 549 | // user would pass to LOAD. |
|---|
| 550 | LispObject possibleTruePathname = probe_file.PROBE_FILE.execute(pathname); |
|---|
| 551 | if (!possibleTruePathname.equals(NIL)) { |
|---|
| 552 | truePathname = (Pathname) possibleTruePathname; |
|---|
| 553 | } |
|---|
| 554 | /* |
|---|
| 555 | if (truePathname.getDevice().cdr() != NIL ) { |
|---|
| 556 | Pathname enclosingJar = (Pathname)truePathname.getDevice().cdr().car(); |
|---|
| 557 | truePathname.setDevice(new Cons(truePathname.getDevice().car(), NIL)); |
|---|
| 558 | truePathname.setHost(NIL); |
|---|
| 559 | truePathname.setDirectory(enclosingJar.getDirectory()); |
|---|
| 560 | if (truePathname.getDirectory().car().equals(Keyword.RELATIVE)) { |
|---|
| 561 | truePathname.getDirectory().setCar(Keyword.ABSOLUTE); |
|---|
| 562 | } |
|---|
| 563 | truePathname.setName(enclosingJar.getName()); |
|---|
| 564 | truePathname.setType(enclosingJar.getType()); |
|---|
| 565 | } else { |
|---|
| 566 | // XXX There is something fishy in the asymmetry |
|---|
| 567 | // between the "jar:jar:http:" and "jar:jar:file:" |
|---|
| 568 | // cases but this currently passes the tests. |
|---|
| 569 | if (!(truePathname.device.car() instanceof AbstractString)) { |
|---|
| 570 | // assert truePathname.getDevice().car() instanceof Pathname; |
|---|
| 571 | // Pathname p = Pathname.create((Pathname)truePathname.getDevice().car()); |
|---|
| 572 | truePathname |
|---|
| 573 | = (Pathname) probe_file.PROBE_FILE.execute(pathname); |
|---|
| 574 | } |
|---|
| 575 | } |
|---|
| 576 | */ |
|---|
| 577 | thread.bindSpecial(Symbol.LOAD_TRUENAME, truePathname); |
|---|
| 578 | } else { |
|---|
| 579 | thread.bindSpecial(Symbol.LOAD_TRUENAME, truename); |
|---|
| 580 | } |
|---|
| 581 | } else { |
|---|
| 582 | thread.bindSpecial(Symbol.LOAD_TRUENAME, truename); |
|---|
| 583 | } |
|---|
| 584 | thread.bindSpecial(_SOURCE_, |
|---|
| 585 | pathname != null ? pathname : NIL); |
|---|
| 586 | if (verbose) { |
|---|
| 587 | Stream out = getStandardOutput(); |
|---|
| 588 | out.freshLine(); |
|---|
| 589 | out._writeString(prefix); |
|---|
| 590 | out._writeString(auto ? " Autoloading " : " Loading "); |
|---|
| 591 | out._writeString(!truename.equals(NIL) ? truePathname.princToString() : "stream"); |
|---|
| 592 | out._writeLine(" ..."); |
|---|
| 593 | out._finishOutput(); |
|---|
| 594 | LispObject result = loadStream(in, print, thread, returnLastResult); |
|---|
| 595 | long elapsed = System.currentTimeMillis() - start; |
|---|
| 596 | out.freshLine(); |
|---|
| 597 | out._writeString(prefix); |
|---|
| 598 | out._writeString(auto ? " Autoloaded " : " Loaded "); |
|---|
| 599 | out._writeString(!truename.equals(NIL) ? truePathname.princToString() : "stream"); |
|---|
| 600 | out._writeString(" ("); |
|---|
| 601 | out._writeString(String.valueOf(((float)elapsed)/1000)); |
|---|
| 602 | out._writeLine(" seconds)"); |
|---|
| 603 | out._finishOutput(); |
|---|
| 604 | return result; |
|---|
| 605 | } else |
|---|
| 606 | return loadStream(in, print, thread, returnLastResult); |
|---|
| 607 | } |
|---|
| 608 | finally { |
|---|
| 609 | thread.resetSpecialBindings(mark); |
|---|
| 610 | } |
|---|
| 611 | } |
|---|
| 612 | |
|---|
| 613 | public static String getLoadVerbosePrefix(int loadDepth) |
|---|
| 614 | { |
|---|
| 615 | StringBuilder sb = new StringBuilder(";"); |
|---|
| 616 | for (int i = loadDepth - 1; i-- > 0;) |
|---|
| 617 | sb.append(' '); |
|---|
| 618 | return sb.toString(); |
|---|
| 619 | } |
|---|
| 620 | |
|---|
| 621 | private static final LispObject loadStream(Stream in, boolean print, |
|---|
| 622 | LispThread thread, boolean returnLastResult) |
|---|
| 623 | |
|---|
| 624 | { |
|---|
| 625 | final SpecialBindingsMark mark = thread.markSpecialBindings(); |
|---|
| 626 | thread.bindSpecial(_LOAD_STREAM_, in); |
|---|
| 627 | SpecialBinding sourcePositionBinding = |
|---|
| 628 | thread.bindSpecial(_SOURCE_POSITION_, Fixnum.ZERO); |
|---|
| 629 | try { |
|---|
| 630 | final Environment env = new Environment(); |
|---|
| 631 | LispObject result = NIL; |
|---|
| 632 | while (true) { |
|---|
| 633 | sourcePositionBinding.value = Fixnum.getInstance(in.getOffset()); |
|---|
| 634 | LispObject obj = in.read(false, EOF, false, |
|---|
| 635 | thread, Stream.currentReadtable); |
|---|
| 636 | if (obj == EOF) |
|---|
| 637 | break; |
|---|
| 638 | result = eval(obj, env, thread); |
|---|
| 639 | if (print) { |
|---|
| 640 | Stream out = |
|---|
| 641 | checkCharacterOutputStream(Symbol.STANDARD_OUTPUT.symbolValue(thread)); |
|---|
| 642 | out._writeLine(result.printObject()); |
|---|
| 643 | out._finishOutput(); |
|---|
| 644 | } |
|---|
| 645 | } |
|---|
| 646 | if(returnLastResult) { |
|---|
| 647 | return result; |
|---|
| 648 | } else { |
|---|
| 649 | return T; |
|---|
| 650 | } |
|---|
| 651 | } |
|---|
| 652 | finally { |
|---|
| 653 | thread.resetSpecialBindings(mark); |
|---|
| 654 | } |
|---|
| 655 | } |
|---|
| 656 | |
|---|
| 657 | static final LispObject faslLoadStream(LispThread thread) |
|---|
| 658 | { |
|---|
| 659 | Stream in = (Stream) _LOAD_STREAM_.symbolValue(thread); |
|---|
| 660 | final Environment env = new Environment(); |
|---|
| 661 | final SpecialBindingsMark mark = thread.markSpecialBindings(); |
|---|
| 662 | LispObject result = NIL; |
|---|
| 663 | try { |
|---|
| 664 | // Same bindings are established in Lisp.readObjectFromString() |
|---|
| 665 | thread.bindSpecial(Symbol.READ_BASE, LispInteger.getInstance(10)); |
|---|
| 666 | thread.bindSpecial(Symbol.READ_EVAL, Symbol.T); |
|---|
| 667 | thread.bindSpecial(Symbol.READ_SUPPRESS, Nil.NIL); |
|---|
| 668 | |
|---|
| 669 | in.setExternalFormat(_FASL_EXTERNAL_FORMAT_.symbolValue(thread)); |
|---|
| 670 | while (true) { |
|---|
| 671 | LispObject obj = in.read(false, EOF, false, // should be 'true' once we |
|---|
| 672 | // have a FASL wide object table |
|---|
| 673 | thread, Stream.faslReadtable); |
|---|
| 674 | if (obj == EOF) |
|---|
| 675 | break; |
|---|
| 676 | result = eval(obj, env, thread); |
|---|
| 677 | } |
|---|
| 678 | } |
|---|
| 679 | finally { |
|---|
| 680 | thread.resetSpecialBindings(mark); |
|---|
| 681 | } |
|---|
| 682 | return result; |
|---|
| 683 | //There's no point in using here the returnLastResult flag like in |
|---|
| 684 | //loadStream(): this function is only called from init-fasl, which is |
|---|
| 685 | //only called from load, which already has its own policy for choosing |
|---|
| 686 | //whether to return T or the last value. |
|---|
| 687 | } |
|---|
| 688 | |
|---|
| 689 | |
|---|
| 690 | // ### %load filespec verbose print if-does-not-exist external-format=> generalized-boolean |
|---|
| 691 | private static final Primitive _LOAD = new _load(); |
|---|
| 692 | private static class _load extends Primitive { |
|---|
| 693 | _load() { |
|---|
| 694 | super("%load", PACKAGE_SYS, false, |
|---|
| 695 | "filespec verbose print if-does-not-exist external-format"); |
|---|
| 696 | } |
|---|
| 697 | @Override |
|---|
| 698 | public LispObject execute(LispObject filespec, LispObject verbose, |
|---|
| 699 | LispObject print, LispObject ifDoesNotExist, |
|---|
| 700 | LispObject externalFormat) |
|---|
| 701 | { |
|---|
| 702 | return load(filespec, verbose, print, ifDoesNotExist, NIL, externalFormat); |
|---|
| 703 | } |
|---|
| 704 | } |
|---|
| 705 | |
|---|
| 706 | // ### %load-returning-last-result filespec verbose print if-does-not-exist external-format => object |
|---|
| 707 | private static final Primitive _LOAD_RETURNING_LAST_RESULT = new _load_returning_last_result(); |
|---|
| 708 | private static class _load_returning_last_result extends Primitive { |
|---|
| 709 | _load_returning_last_result() { |
|---|
| 710 | super("%load-returning-last-result", PACKAGE_SYS, false, |
|---|
| 711 | "filespec verbose print if-does-not-exist external-format"); |
|---|
| 712 | } |
|---|
| 713 | @Override |
|---|
| 714 | public LispObject execute(LispObject filespec, LispObject verbose, |
|---|
| 715 | LispObject print, LispObject ifDoesNotExist, |
|---|
| 716 | LispObject externalFormat) { |
|---|
| 717 | return load(filespec, verbose, print, ifDoesNotExist, T, externalFormat); |
|---|
| 718 | } |
|---|
| 719 | } |
|---|
| 720 | |
|---|
| 721 | static final LispObject load(LispObject filespec, |
|---|
| 722 | LispObject verbose, |
|---|
| 723 | LispObject print, |
|---|
| 724 | LispObject ifDoesNotExist, |
|---|
| 725 | LispObject returnLastResult, |
|---|
| 726 | LispObject externalFormat) |
|---|
| 727 | { |
|---|
| 728 | if (filespec instanceof Stream) { |
|---|
| 729 | if (((Stream)filespec).isOpen()) { |
|---|
| 730 | // !?! in this case the external-format specifier is ignored: warn user? |
|---|
| 731 | LispObject pathname; |
|---|
| 732 | if (filespec instanceof FileStream) |
|---|
| 733 | pathname = ((FileStream)filespec).getPathname(); |
|---|
| 734 | else |
|---|
| 735 | pathname = NIL; |
|---|
| 736 | LispObject truename; |
|---|
| 737 | if (pathname instanceof Pathname) |
|---|
| 738 | truename = pathname; |
|---|
| 739 | else |
|---|
| 740 | truename = NIL; |
|---|
| 741 | return loadFileFromStream(pathname, |
|---|
| 742 | truename, |
|---|
| 743 | (Stream) filespec, |
|---|
| 744 | verbose != NIL, |
|---|
| 745 | print != NIL, |
|---|
| 746 | false, |
|---|
| 747 | returnLastResult != NIL); |
|---|
| 748 | } |
|---|
| 749 | // If stream is closed, fall through... |
|---|
| 750 | } |
|---|
| 751 | Pathname pathname = coerceToPathname(filespec); |
|---|
| 752 | if (pathname instanceof LogicalPathname) |
|---|
| 753 | pathname = LogicalPathname.translateLogicalPathname((LogicalPathname)pathname); |
|---|
| 754 | return load(pathname, |
|---|
| 755 | verbose != NIL, |
|---|
| 756 | print != NIL, |
|---|
| 757 | ifDoesNotExist != NIL, |
|---|
| 758 | returnLastResult != NIL, |
|---|
| 759 | externalFormat); |
|---|
| 760 | } |
|---|
| 761 | |
|---|
| 762 | // ### load-system-file |
|---|
| 763 | public static final Primitive LOAD_SYSTEM_FILE = new pf_load_system_file(); |
|---|
| 764 | private static class pf_load_system_file extends Primitive { |
|---|
| 765 | pf_load_system_file () { |
|---|
| 766 | super("load-system-file", PACKAGE_SYS, true); |
|---|
| 767 | } |
|---|
| 768 | @Override |
|---|
| 769 | public LispObject execute(LispObject arg) |
|---|
| 770 | { |
|---|
| 771 | final LispThread thread = LispThread.currentThread(); |
|---|
| 772 | return loadSystemFile(arg.getStringValue(), |
|---|
| 773 | Symbol.LOAD_VERBOSE.symbolValue(thread) != NIL |
|---|
| 774 | || System.getProperty("abcl.autoload.verbose") != null, |
|---|
| 775 | Symbol.LOAD_PRINT.symbolValue(thread) != NIL, |
|---|
| 776 | false); |
|---|
| 777 | } |
|---|
| 778 | } |
|---|
| 779 | } |
|---|