Source Code Cross Referenced for C.java in  » Parser » Rats-Parser-Generators » xtc » lang » Java Source Code / Java DocumentationJava Source Code and Java Documentation

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Java Source Code / Java Documentation » Parser » Rats Parser Generators » xtc.lang 
Source Cross Referenced  Class Diagram Java Document (Java Doc) 


001:        /*
002:         * xtc - The eXTensible Compiler
003:         * Copyright (C) 2004-2007 Robert Grimm
004:         *
005:         * This program is free software; you can redistribute it and/or
006:         * modify it under the terms of the GNU General Public License
007:         * version 2 as published by the Free Software Foundation.
008:         *
009:         * This program is distributed in the hope that it will be useful,
010:         * but WITHOUT ANY WARRANTY; without even the implied warranty of
011:         * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
012:         * GNU General Public License for more details.
013:         *
014:         * You should have received a copy of the GNU General Public License
015:         * along with this program; if not, write to the Free Software
016:         * Foundation, 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301,
017:         * USA.
018:         */
019:        package xtc.lang;
020:
021:        import java.lang.reflect.Method;
022:
023:        import java.io.File;
024:        import java.io.IOException;
025:        import java.io.Reader;
026:
027:        import xtc.Constants;
028:        import xtc.Limits;
029:
030:        import xtc.tree.Formatting;
031:        import xtc.tree.GNode;
032:        import xtc.tree.Location;
033:        import xtc.tree.Node;
034:        import xtc.tree.ParseTreePrinter;
035:        import xtc.tree.ParseTreeStripper;
036:        import xtc.tree.Printer;
037:        import xtc.tree.Visitor;
038:
039:        import xtc.type.CFactory;
040:        import xtc.type.TypePrinter;
041:
042:        import xtc.util.SymbolTable;
043:        import xtc.util.Tool;
044:
045:        import xtc.parser.Result;
046:        import xtc.parser.ParseException;
047:
048:        /**
049:         * The C tool.
050:         *
051:         * @author Robert Grimm
052:         * @version $Revision: 1.59 $
053:         */
054:        public class C extends Tool {
055:
056:            /** The method for printing the memoization table's profile. */
057:            protected Method profile;
058:
059:            /** The method for printing the parser's memoization table. */
060:            protected Method dump;
061:
062:            /** Create a new C tool. */
063:            public C() {
064:                /* Nothing to do. */
065:            }
066:
067:            public String getName() {
068:                return "xtc C Tool";
069:            }
070:
071:            public String getCopy() {
072:                return Constants.COPY;
073:            }
074:
075:            public void init() {
076:                super .init();
077:                runtime
078:                        .bool("parsetree", "optionParseTree", false,
079:                                "Generate a parse tree.")
080:                        .bool("noincr", "optionNoIncr", false,
081:                                "Do not parse incrementally.")
082:                        .bool("memoProfile", "printMemoProfile", false,
083:                                "Print profile of parser's memoization table.")
084:                        .bool("memoTable", "printMemoTable", false,
085:                                "Print parser's memoization table.")
086:                        .bool("analyze", "optionAnalyze", false,
087:                                "Analyze the program's AST.")
088:                        .bool("typical", "optionTypical", false,
089:                                "Use the Typical-generated analyzer.")
090:                        .bool("pedantic", "optionPedantic", false,
091:                                "Enforce strict C99 compliance.")
092:                        .bool("builtins", "optionBuiltIns", false,
093:                                "Declare C built-ins before analysis.")
094:                        .bool("markAST", "optionMarkAST", false,
095:                                "Mark AST nodes with types.")
096:                        .bool("printStats", "printASTStats", false,
097:                                "Collect and print the program's AST statistics.")
098:                        .bool("printSymbolTable", "printSymbolTable", false,
099:                                "Print the program's symbol table.")
100:                        .bool("strip", "optionStrip", false,
101:                                "Strip any annotations before printing the AST.")
102:                        .bool("printAST", "printAST", false,
103:                                "Print the program's AST in generic form.")
104:                        .bool(
105:                                "locateAST",
106:                                "optionLocateAST",
107:                                false,
108:                                "Include location information when printing the AST in "
109:                                        + "generic form.")
110:                        .bool("printSource", "printSource", false,
111:                                "Print the program's AST in C source form.")
112:                        .bool("preserveLines", "preserveLines", false,
113:                                "Preserve line spacing when printing C source.")
114:                        .bool("formatGNU", "formatGNU", false,
115:                                "Use GNU source formatting guidelines.");
116:            }
117:
118:            public void prepare() {
119:                super .prepare();
120:                if (runtime.test("printMemoProfile")) {
121:                    // Ensure the parser has a profile(Printer) method.
122:                    Class klass = runtime.test("optionParseTree") ? CReader.class
123:                            : CParser.class;
124:                    String name = runtime.test("optionParseTree") ? "C reader"
125:                            : "C parser";
126:                    try {
127:                        profile = klass.getMethod("profile",
128:                                new Class[] { Printer.class });
129:                    } catch (NoSuchMethodException x) {
130:                        runtime.error(name
131:                                + " generated without profile attribute");
132:                    } catch (SecurityException x) {
133:                        runtime.error("unable to access " + name
134:                                + "'s profile() method");
135:                    }
136:                }
137:                if (runtime.test("printMemoTable")) {
138:                    // Ensure the parser has a dump(Printer) method.
139:                    Class klass = runtime.test("optionParseTree") ? CReader.class
140:                            : CParser.class;
141:                    String name = runtime.test("optionParseTree") ? "C reader"
142:                            : "C parser";
143:                    try {
144:                        dump = klass.getMethod("dump",
145:                                new Class[] { Printer.class });
146:                    } catch (NoSuchMethodException x) {
147:                        runtime.error(name
148:                                + " generated without dump attribute");
149:                    } catch (SecurityException x) {
150:                        runtime.error("unable to access " + name
151:                                + "'s dump() method");
152:                    }
153:                }
154:                if (runtime.test("optionTypical")) {
155:                    if (!runtime.test("optionAnalyze")) {
156:                        runtime.error("typical option requires analyze option");
157:                    }
158:                }
159:                if (runtime.test("optionPedantic")) {
160:                    if (!runtime.test("optionAnalyze")) {
161:                        runtime
162:                                .error("pedantic option requires analyze option");
163:                    }
164:                }
165:                if (runtime.test("optionBuiltIns")) {
166:                    if (!runtime.test("optionAnalyze")) {
167:                        runtime
168:                                .error("builtins option requires analyze option");
169:                    }
170:                }
171:                if (runtime.test("optionMarkAST")) {
172:                    if (!runtime.test("optionAnalyze")) {
173:                        runtime.error("markAST option requires analyze option");
174:                    }
175:                }
176:                if (runtime.test("printSymbolTable")) {
177:                    if (!runtime.test("optionAnalyze")) {
178:                        runtime
179:                                .error("printSymbolTable option requires analyze option");
180:                    }
181:                }
182:                if (runtime.test("optionLocateAST")) {
183:                    if (!runtime.test("printAST")) {
184:                        runtime
185:                                .error("locateAST option requires printAST option");
186:                    }
187:                }
188:                if (runtime.test("preserveLines")) {
189:                    if (!runtime.test("printSource")) {
190:                        runtime
191:                                .error("preserveLines option requires printSource option");
192:                    }
193:                }
194:                if (runtime.test("formatGNU")) {
195:                    if (!runtime.test("printSource")) {
196:                        runtime
197:                                .error("formatGNU option requires printSource option");
198:                    }
199:                }
200:            }
201:
202:            public void diagnose() {
203:                runtime.console().pln();
204:
205:                runtime.console().p("os        : ").p(
206:                        System.getProperty("os.name")).p(' ').pln(
207:                        System.getProperty("os.version"));
208:                runtime.console().p("arch      : ").pln(
209:                        System.getProperty("os.arch"));
210:                runtime.console().p("endian    : ");
211:                if (Limits.IS_BIG_ENDIAN) {
212:                    runtime.console().pln("big");
213:                } else {
214:                    runtime.console().pln("little");
215:                }
216:                runtime.console().p("size_t    : ").pln(
217:                        xtc.type.C.SIZEOF.toString());
218:                runtime.console().p("ptrdiff_t : ").pln(
219:                        xtc.type.C.PTR_DIFF.toString());
220:                runtime.console().p("wchar_t   : ").pln(
221:                        xtc.type.C.WCHAR.toString());
222:                runtime.console().p("char      : ");
223:                if (Limits.IS_CHAR_SIGNED) {
224:                    runtime.console().pln("signed");
225:                } else {
226:                    runtime.console().pln("unsigned");
227:                }
228:                runtime.console().p("int       : ");
229:                if (Limits.IS_INT_SIGNED) {
230:                    runtime.console().pln("signed in bitfields");
231:                } else {
232:                    runtime.console().pln("unsigned in bitfields");
233:                }
234:                runtime.console().pln();
235:
236:                runtime
237:                        .console()
238:                        .pln(
239:                                "type      |   c |  s |  i |  l | ll |  f |  d | ld |  p");
240:                runtime
241:                        .console()
242:                        .pln(
243:                                "----------+-----+----+----+----+----+----+----+----+----");
244:                runtime.console().p("size      |   1 | ").pad(
245:                        Limits.SHORT_SIZE, 2).p(" | ").pad(Limits.INT_SIZE, 2)
246:                        .p(" | ").pad(Limits.LONG_SIZE, 2).p(" | ").pad(
247:                                Limits.LONG_LONG_SIZE, 2).p(" | ").pad(
248:                                Limits.FLOAT_SIZE, 2).p(" | ").pad(
249:                                Limits.DOUBLE_SIZE, 2).p(" | ").pad(
250:                                Limits.LONG_DOUBLE_SIZE, 2).p(" | ").pad(
251:                                Limits.POINTER_SIZE, 2).pln();
252:                runtime.console().p("align     |   1 | ").pad(
253:                        Limits.SHORT_ALIGN, 2).p(" | ")
254:                        .pad(Limits.INT_ALIGN, 2).p(" | ").pad(
255:                                Limits.LONG_ALIGN, 2).p(" | ").pad(
256:                                Limits.LONG_LONG_ALIGN, 2).p(" | ").pad(
257:                                Limits.FLOAT_ALIGN, 2).p(" | ").pad(
258:                                Limits.DOUBLE_ALIGN, 2).p(" | ").pad(
259:                                Limits.LONG_DOUBLE_ALIGN, 2).p(" | ").pad(
260:                                Limits.POINTER_ALIGN, 2).pln();
261:                runtime.console().pln().flush();
262:            }
263:
264:            public File locate(String name) throws IOException {
265:                File file = super .locate(name);
266:                if (runtime.test("optionNoIncr")
267:                        && (Integer.MAX_VALUE < file.length())) {
268:                    throw new IllegalArgumentException(file
269:                            + ": file too large");
270:                }
271:                return file;
272:            }
273:
274:            public Node parse(Reader in, File file) throws IOException,
275:                    ParseException {
276:                if (runtime.test("optionParseTree")) { // ======================== Reader
277:                    if (runtime.test("optionNoIncr")) {
278:                        CReader parser = new CReader(in, file.toString(),
279:                                (int) file.length());
280:                        Result result = parser.pTranslationUnit(0);
281:                        printMemoInfo(parser, file);
282:                        return (Node) parser.value(result);
283:
284:                    } else {
285:                        CReader parser = new CReader(in, file.getName());
286:                        GNode unit = GNode.create("TranslationUnit");
287:                        unit.setLocation(new Location(file.toString(), 1, 0));
288:                        Node root = unit;
289:                        boolean first = true;
290:
291:                        while (!parser.isEOF(0)) {
292:                            Result result = first ? parser.pPrelude(0) : parser
293:                                    .pExternalDeclaration(0);
294:                            printMemoInfo(parser, file);
295:                            if (!result.hasValue())
296:                                parser.signal(result.parseError());
297:
298:                            if (first) {
299:                                root = Formatting.before1(result
300:                                        .semanticValue(), unit);
301:                                first = false;
302:                            } else {
303:                                unit.add(result.semanticValue());
304:                            }
305:                            parser.resetTo(result.index);
306:                        }
307:
308:                        // Grab any trailing annotations.
309:                        Result result = parser.pAnnotations(0);
310:                        if (!result.hasValue())
311:                            parser.signal(result.parseError());
312:                        unit.add(result.semanticValue());
313:
314:                        return root;
315:                    }
316:
317:                } else if (runtime.test("optionNoIncr")) { // ==================== Parser
318:                    CParser parser = new CParser(in, file.toString(),
319:                            (int) file.length());
320:                    Result result = parser.pTranslationUnit(0);
321:                    printMemoInfo(parser, file);
322:                    return (Node) parser.value(result);
323:
324:                } else {
325:                    CParser parser = new CParser(in, file.getName());
326:                    GNode root = GNode.create("TranslationUnit");
327:                    boolean first = true;
328:
329:                    while (!parser.isEOF(0)) {
330:                        Result result = first ? parser.pPrelude(0) : parser
331:                                .pExternalDeclaration(0);
332:                        printMemoInfo(parser, file);
333:                        if (!result.hasValue())
334:                            parser.signal(result.parseError());
335:
336:                        if (first) {
337:                            first = false;
338:                        } else {
339:                            root.add(result.semanticValue());
340:                        }
341:                        parser.resetTo(result.index);
342:                    }
343:
344:                    // Grab any trailing annotations.
345:                    Result result = parser.pAnnotations(0);
346:                    if (!result.hasValue())
347:                        parser.signal(result.parseError());
348:                    root.add(result.semanticValue());
349:
350:                    return root;
351:                }
352:            }
353:
354:            /**
355:             * Print memoization information.
356:             *
357:             * @param parser The parser.
358:             * @param file The file.
359:             */
360:            private void printMemoInfo(Object parser, File file) {
361:                if (runtime.test("printMemoProfile")) {
362:                    try {
363:                        profile.invoke(parser,
364:                                new Object[] { runtime.console() });
365:                    } catch (Exception x) {
366:                        runtime.error(file + ": " + x.getMessage());
367:                    }
368:                    runtime.console().pln().flush();
369:                }
370:
371:                if (runtime.test("printMemoTable")) {
372:                    try {
373:                        dump.invoke(parser, new Object[] { runtime.console() });
374:                    } catch (Exception x) {
375:                        runtime.error(file + ": " + x.getMessage());
376:                    }
377:                    runtime.console().flush();
378:                }
379:            }
380:
381:            public void process(Node node) {
382:                // Analyze the AST.
383:                if (runtime.test("optionAnalyze")) {
384:                    SymbolTable table;
385:
386:                    if (runtime.test("optionTypical")) {
387:                        // Analyze and fill in the symbol table.
388:                        table = new xtc.lang.c.CAnalyzer(runtime).run(node);
389:
390:                    } else {
391:                        // Create symbol table.
392:                        table = new SymbolTable();
393:
394:                        // Add built-ins.
395:                        if (runtime.test("optionBuiltIns")) {
396:                            new CFactory("__builtin_", table.root())
397:                                    .declareBuiltIns(false);
398:                        }
399:
400:                        // Perform type checking.
401:                        new CAnalyzer(runtime).analyze(node, table);
402:                    }
403:
404:                    // Print the symbol table.
405:                    if (runtime.test("printSymbolTable")) {
406:                        // Save the registered visitor.
407:                        Visitor visitor = runtime.console().visitor();
408:                        // Note that the type printer's constructor registers the just
409:                        // created printer with the console.
410:                        new TypePrinter(runtime.console());
411:                        try {
412:                            table.root().dump(runtime.console());
413:                        } finally {
414:                            // Restore the previously registered visitor.
415:                            runtime.console().register(visitor);
416:                        }
417:                        runtime.console().flush();
418:                    }
419:                }
420:
421:                // Print AST statistics.
422:                if (runtime.test("printASTStats")) {
423:                    CCounter counter = new CCounter();
424:                    counter.dispatch(node);
425:                    counter.print(runtime.console());
426:                    runtime.console().flush();
427:                }
428:
429:                // Strip AST.
430:                if (runtime.test("optionStrip")) {
431:                    node = (Node) new ParseTreeStripper().dispatch(node);
432:                }
433:
434:                // Print AST.
435:                if (runtime.test("printAST")) {
436:                    runtime.console().format(node,
437:                            runtime.test("optionLocateAST")).pln().flush();
438:                }
439:
440:                // Print source.
441:                if (runtime.test("printSource")) {
442:                    if (runtime.test("optionParseTree")
443:                            && (!runtime.test("optionStrip"))) {
444:                        new ParseTreePrinter(runtime.console()).dispatch(node);
445:                    } else {
446:                        new CPrinter(runtime.console(), runtime
447:                                .test("preserveLines"), runtime
448:                                .test("formatGNU")).dispatch(node);
449:                    }
450:                    runtime.console().flush();
451:                }
452:            }
453:
454:            /**
455:             * Run the tool with the specified command line arguments.
456:             *
457:             * @param args The command line arguments.
458:             */
459:            public static void main(String[] args) {
460:                new C().run(args);
461:            }
462:
463:        }
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