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Split LexGenerator out of Main #428
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afe31a8
Split Main in Main and LexGenerator.
regisd 939d6c6
Make Main non instanciable.
regisd f37dc62
Adapt code to refactoring.
regisd 5d63d4e
Update javadoc
regisd 5d7ae8c
Remove hack to fetch cup.jar in the ant build.
regisd 84a4c63
Revert "Remove hack to fetch cup.jar in the ant build."
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,131 @@ | ||
| /* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * | ||
| * JFlex 1.7.1-SNAPSHOT * | ||
| * Copyright (C) 1998-2018 Gerwin Klein <[email protected]> * | ||
| * All rights reserved. * | ||
| * * | ||
| * License: BSD * | ||
| * * | ||
| * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */ | ||
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| package jflex; | ||
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| import static jflex.Options.encoding; | ||
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| import java.io.File; | ||
| import java.io.IOException; | ||
| import java.io.InputStreamReader; | ||
| import java.io.Reader; | ||
| import java.nio.file.Files; | ||
| import java.nio.file.Paths; | ||
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| /** | ||
| * This is the main class of JFlex controlling the scanner generation process. It is responsible for | ||
| * parsing the commandline, getting input files, starting up the GUI if necessary, etc. | ||
| * | ||
| * @author Gerwin Klein | ||
| * @author Régis Décamps | ||
| * @version JFlex 1.7.1-SNAPSHOT | ||
| */ | ||
| public class LexGenerator { | ||
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| /** JFlex version */ | ||
| public static final String VERSION = "1.7.1-SNAPSHOT"; // $NON-NLS-1$ | ||
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| /** | ||
| * Generates a scanner for the specified input file. | ||
| * | ||
| * @param inputFile a file containing a lexical specification to generate a scanner for. | ||
| */ | ||
| public static void generate(File inputFile) { | ||
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| Out.resetCounters(); | ||
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| Timer totalTime = new Timer(); | ||
| Timer time = new Timer(); | ||
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| LexScan scanner = null; | ||
| LexParse parser = null; | ||
| Reader inputReader = null; | ||
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| totalTime.start(); | ||
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| try { | ||
| Out.println(ErrorMessages.READING, inputFile.toString()); | ||
| inputReader = | ||
| new InputStreamReader(Files.newInputStream(Paths.get(inputFile.toString())), encoding); | ||
| scanner = new LexScan(inputReader); | ||
| scanner.setFile(inputFile); | ||
| parser = new LexParse(scanner); | ||
| } catch (IOException e) { | ||
| Out.error(ErrorMessages.CANNOT_OPEN, inputFile.toString()); | ||
| throw new GeneratorException(); | ||
| } | ||
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| try { | ||
| NFA nfa = (NFA) parser.parse().value; | ||
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| Out.checkErrors(); | ||
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| if (Options.dump) Out.dump(ErrorMessages.get(ErrorMessages.NFA_IS) + Out.NL + nfa + Out.NL); | ||
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| if (Options.dot) nfa.writeDot(Emitter.normalize("nfa.dot", null)); // $NON-NLS-1$ | ||
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| Out.println(ErrorMessages.NFA_STATES, nfa.numStates); | ||
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| time.start(); | ||
| DFA dfa = nfa.getDFA(); | ||
| time.stop(); | ||
| Out.time(ErrorMessages.DFA_TOOK, time); | ||
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| dfa.checkActions(scanner, parser); | ||
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| nfa = null; | ||
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| if (Options.dump) Out.dump(ErrorMessages.get(ErrorMessages.DFA_IS) + Out.NL + dfa + Out.NL); | ||
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| if (Options.dot) dfa.writeDot(Emitter.normalize("dfa-big.dot", null)); // $NON-NLS-1$ | ||
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| Out.checkErrors(); | ||
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| time.start(); | ||
| dfa.minimize(); | ||
| time.stop(); | ||
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| Out.time(ErrorMessages.MIN_TOOK, time); | ||
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| if (Options.dump) Out.dump(ErrorMessages.get(ErrorMessages.MIN_DFA_IS) + Out.NL + dfa); | ||
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| if (Options.dot) dfa.writeDot(Emitter.normalize("dfa-min.dot", null)); // $NON-NLS-1$ | ||
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| time.start(); | ||
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| Emitter e = new Emitter(inputFile, parser, dfa); | ||
| e.emit(); | ||
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| time.stop(); | ||
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| Out.time(ErrorMessages.WRITE_TOOK, time); | ||
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| totalTime.stop(); | ||
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| Out.time(ErrorMessages.TOTAL_TIME, totalTime); | ||
| } catch (ScannerException e) { | ||
| Out.error(e.file, e.message, e.line, e.column); | ||
| throw new GeneratorException(); | ||
| } catch (MacroException e) { | ||
| Out.error(e.getMessage()); | ||
| throw new GeneratorException(); | ||
| } catch (IOException e) { | ||
| Out.error(ErrorMessages.IO_ERROR, e.toString()); | ||
| throw new GeneratorException(); | ||
| } catch (OutOfMemoryError e) { | ||
| Out.error(ErrorMessages.OUT_OF_MEMORY); | ||
| throw new GeneratorException(); | ||
| } catch (GeneratorException e) { | ||
| throw new GeneratorException(); | ||
| } catch (Exception e) { | ||
| e.printStackTrace(); | ||
| throw new GeneratorException(); | ||
| } | ||
| } | ||
| } | ||
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The comment will need adjustment for the refactor, indicating which part is in which class in the new setting.