Source Code Cross Referenced for InternalTables.java in  » Testing » Marathon » org » python » core » Java Source Code / Java DocumentationJava Source Code and Java Documentation

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Java Source Code / Java Documentation » Testing » Marathon » org.python.core 
Source Cross Referenced  Class Diagram Java Document (Java Doc) 


001:        // Copyright 2000 Samuele Pedroni
002:
003:        package org.python.core;
004:
005:        import java.util.StringTokenizer;
006:
007:        public abstract class InternalTables {
008:
009:            // x__ --> org.python.core.X__InternalTables
010:            // (x|X)__> --> org.python.core.X__InternalTables
011:            // >(x|X)__ --> org.python.core.InternalTablesX__
012:            // other (X__|__.__) --> other
013:            //
014:            /**
015:             * XXX: These contortions are here to decide between InternalTables1 and
016:             * InternalTables2. Since we have deprecated support for JDK 1.1 -- this
017:             * should go away and InternalTables1 and InternalTables2 should be merged
018:             * and replace this class.
019:             */
020:            static private InternalTables tryImpl(String id) {
021:                try {
022:                    if (id.indexOf('.') < 0) {
023:                        boolean glue = true;
024:                        boolean front = true;
025:                        if (id.charAt(0) == '>') {
026:                            id = id.substring(1);
027:                            front = false;
028:                        } else if (id.charAt(id.length() - 1) == '>') {
029:                            id = id.substring(0, id.length() - 1);
030:                        } else if (!Character.isLowerCase(id.charAt(0)))
031:                            glue = false;
032:                        if (glue) {
033:                            StringBuffer buf = new StringBuffer(
034:                                    "org.python.core.");
035:                            if (!front) {
036:                                buf.append("InternalTables");
037:                            }
038:                            if (Character.isLowerCase(id.charAt(0))) {
039:                                buf.append(Character.toUpperCase(id.charAt(0)));
040:                                buf.append(id.substring(1));
041:                            } else {
042:                                buf.append(id);
043:                            }
044:                            if (front) {
045:                                buf.append("InternalTables");
046:                            }
047:                            id = buf.toString();
048:                        }
049:                    }
050:                    // System.err.println("*InternalTables*-create-try: "+id);
051:                    return (InternalTables) Class.forName(id).newInstance();
052:                } catch (Throwable e) {
053:                    // System.err.println(" exc: "+e); // ??dbg
054:                    return null;
055:                }
056:            }
057:
058:            static InternalTables createInternalTables() {
059:                java.util.Properties registry = PySystemState.registry;
060:                if (registry == null) {
061:                    throw new java.lang.IllegalStateException(
062:                            "Jython interpreter state not initialized. "
063:                                    + "You need to call PySystemState.initialize or "
064:                                    + "PythonInterpreter.initialize.");
065:                }
066:                String cands = registry
067:                        .getProperty("python.options.internalTablesImpl");
068:                if (cands == null) {
069:                    String version = System.getProperty("java.version");
070:                    if (version.compareTo("1.2") >= 0) {
071:                        cands = ">2:>1";
072:                    } else {
073:                        cands = ">1";
074:                    }
075:                } else {
076:                    cands = cands + ":>2:>1";
077:                }
078:                StringTokenizer candEnum = new StringTokenizer(cands, ":");
079:                while (candEnum.hasMoreTokens()) {
080:                    InternalTables tbl = tryImpl(candEnum.nextToken().trim());
081:                    if (tbl != null) {
082:                        return tbl;
083:                    }
084:                }
085:                return null; // XXX: never reached -- throw exception instead?
086:            }
087:
088:            protected abstract boolean queryCanonical(String name);
089:
090:            protected abstract PyJavaClass getCanonical(Class c);
091:
092:            protected abstract PyJavaClass getLazyCanonical(String name);
093:
094:            protected abstract void putCanonical(Class c, PyJavaClass canonical);
095:
096:            protected abstract void putLazyCanonical(String name,
097:                    PyJavaClass canonical);
098:
099:            protected abstract Class getAdapterClass(Class c);
100:
101:            protected abstract void putAdapterClass(Class c, Class ac);
102:
103:            protected abstract Object getAdapter(Object o, String evc);
104:
105:            protected abstract void putAdapter(Object o, String evc, Object ad);
106:
107:            public boolean _doesSomeAutoUnload() {
108:                return false;
109:            }
110:
111:            public void _forceCleanup() {
112:            }
113:
114:            public abstract void _beginCanonical();
115:
116:            public abstract void _beginLazyCanonical();
117:
118:            public abstract void _beginOverAdapterClasses();
119:
120:            public abstract void _beginOverAdapters();
121:
122:            public abstract Object _next();
123:
124:            public abstract void _flushCurrent();
125:
126:            public abstract void _flush(PyJavaClass jc);
127:
128:            static public class _LazyRep {
129:                public String name;
130:
131:                public PackageManager mgr;
132:
133:                _LazyRep(String name, PackageManager mgr) {
134:                    this.name = name;
135:                    this.mgr = mgr;
136:                }
137:            }
138:
139:        }
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