Add versioning, allow multiple grammars as input.

relast2uml.base/build.gradle

@@ -27,6 +27,25 @@ dependencies {
     testImplementation group: 'org.assertj', name: 'assertj-core', version: '3.12.1'
 }
 
+def versionFile = 'src/main/resources/relast2umlVersion.properties'
+def oldProps = new Properties()
+
+try {
+    file(versionFile).withInputStream { stream -> oldProps.load(stream) }
+    version = oldProps['version']
+} catch (e) {
+    // this happens, if either the properties file is not present, or cannot be read from
+    throw new GradleException("File ${versionFile} not found or unreadable. Aborting.")
+}
+
+task newVersion() {
+    doFirst {
+        def props = new Properties()
+        props['version'] = value
+        props.store(file(versionFile).newWriter(), null)
+    }
+}
+
 sourceSets {
     main {
         java.srcDir "src/gen/java"

relast2uml.base/src/main/java/org/jastadd/relast2uml/compiler/Compiler.java

@@ -18,14 +18,15 @@ import java.io.PrintWriter;
 import java.nio.file.Files;
 import java.nio.file.Paths;
 import java.util.ArrayList;
-import java.util.List;
+import java.util.MissingResourceException;
+import java.util.ResourceBundle;
 
 public class Compiler {
 
   private StringOption optionOutputFile;
-  private StringOption optionInputGrammar;
   private StringOption optionInputRelast2Uml;
   private FlagOption optionHelp;
+  private FlagOption optionVersion;
   private FlagOption optionVerbose;
 
   private ArrayList<Option<?>> options;
@@ -49,6 +50,11 @@ public class Compiler {
       return;
     }
 
+    if (optionVersion.isSet()) {
+      System.out.println(readVersion());
+      return;
+    }
+
     if (optionVerbose.isSet()) {
       try {
         run();
@@ -62,6 +68,8 @@ public class Compiler {
   }
 
   private void run() throws CompilerException {
+    printMessage("Running relast2uml " + readVersion());
+
     String output;
     if (optionOutputFile.isSet()) {
       output = optionOutputFile.getValue();
@@ -75,17 +83,11 @@ public class Compiler {
       throw new CompilerException("Error creating output dir " + Paths.get(output).getParent().toAbsolutePath(), e);
     }
 
-    printMessage("Running Relast2Uml Preprocessor");
-
     if (anyRequiredOptionIsUnset()) {
       throw new CompilerException("Aborting due to missing values for required options.");
     }
 
-    List<String> otherArgs = commandLine.getArguments();
-    if (!otherArgs.isEmpty()) {
-      printMessage("Superfluous arguments will be ignored: " + otherArgs);
-    }
-    Relast2Uml relast2uml = parseProgram(optionInputGrammar.getValue(), optionInputRelast2Uml.getValue());
+    Relast2Uml relast2uml = parseProgram();
 
     if (!relast2uml.errors().isEmpty()) {
       System.err.println("Errors:");
@@ -95,10 +97,30 @@ public class Compiler {
       System.exit(1);
     }
 
-    printMessage("Writing output files");
+    printMessage("Writing output file " + output);
     writeToFile(output, relast2uml.generateAspect());
   }
 
+  /**
+   * Reads the version string.
+   *
+   * The version string is read from the property file
+   * src/main/resources/Version.properties. This
+   * file should be generated during the build process. If it is missing
+   * then there is some problem in the build script.
+   *
+   * @author Jesper Öqvist <jesper.oqvist@cs.lth.se>
+   * @return the read version string, or <code>version ?</code>
+   */
+  private String readVersion() {
+    try {
+      ResourceBundle resources = ResourceBundle.getBundle("relast2umlVersion");
+      return resources.getString("version");
+    } catch (MissingResourceException e) {
+      return "version ?";
+    }
+  }
+
   private boolean anyRequiredOptionIsUnset() {
     boolean foundError = false;
     for (Option<?> option : options) {
@@ -137,9 +159,9 @@ public class Compiler {
 
   private void addOptions() {
     optionOutputFile = addOption(new StringOption("output", "target file to be generated."));
-    optionInputGrammar = addOption(new StringOption("inputGrammar", "base grammar."));
     optionInputRelast2Uml = addOption(new StringOption("inputRelast2Uml", "relast2uml definition file."));
     optionHelp = addOption(new FlagOption("help", "Print usage and exit."));
+    optionVersion = addOption(new FlagOption("help", "Print version and exit."));
     optionVerbose = addOption(new FlagOption("verbose", "Print more messages while compiling."));
   }
 
@@ -148,11 +170,12 @@ public class Compiler {
     return option;
   }
 
-  private Relast2Uml parseProgram(String inputGrammarFileName, String inputRelast2UmlFileName) throws CompilerException {
+  private Relast2Uml parseProgram() throws CompilerException {
     Program program = new Program();
     Relast2Uml relast2Uml;
-    GrammarFile inputGrammar;
 
+    for (String inputGrammarFileName : commandLine.getArguments()) {
+      GrammarFile inputGrammar;
       try (BufferedReader reader = Files.newBufferedReader(Paths.get(inputGrammarFileName))) {
         Relast2UmlScanner scanner = new Relast2UmlScanner(reader);
         Relast2UmlParser parser = new Relast2UmlParser();
@@ -166,16 +189,24 @@ public class Compiler {
       } catch (IOException | Parser.Exception e) {
         throw new CompilerException("Could not parse grammar file " + inputGrammarFileName, e);
       }
+    }
 
+    if (optionInputRelast2Uml.isSet()) {
+      String inputRelast2UmlFileName = optionInputRelast2Uml.getValue();
       try (BufferedReader reader = Files.newBufferedReader(Paths.get(inputRelast2UmlFileName))) {
         Relast2UmlScanner scanner = new Relast2UmlScanner(reader);
         Relast2UmlParser parser = new Relast2UmlParser();
         relast2Uml = (Relast2Uml) parser.parse(scanner, Relast2UmlParser.AltGoals.relast2uml);
-      relast2Uml.setProgram(program);
         relast2Uml.setFileName(inputRelast2UmlFileName);
       } catch (IOException | Parser.Exception e) {
         throw new CompilerException("Could not parse relast2uml file " + inputRelast2UmlFileName, e);
       }
+    } else {
+      // no special setting given
+      relast2Uml = new Relast2Uml();
+      relast2Uml.setFileName("<none>");
+    }
+    relast2Uml.setProgram(program);
     relast2Uml.treeResolveAll();
     return relast2Uml;
   }

relast2uml.base/src/main/resources/relast2umlVersion.properties

+#Fri Jul 17 15:33:27 CEST 2020
+version=0.1.0

relast2uml.base/src/test/java/org/jastadd/relast2uml/test/CompilerTest.java

@@ -34,8 +34,8 @@ public class CompilerTest {
 
     String[] args = {
         "--output=" + output,
-        "--inputGrammar=" + inputGrammar,
-        "--inputRelast2Uml=" + inputRelast2Uml
+        "--inputRelast2Uml=" + inputRelast2Uml,
+        inputGrammar
     };
 
     new Compiler().run(args);