Initial commit

src/main/java/TP2/Main.java

@@ -0,0 +1,51 @@
+package TP2;
+
+import java.nio.file.Paths;
+import java.util.Optional;
+import java.io.IOException;
+
+import org.antlr.runtime.ANTLRFileStream;
+import org.antlr.runtime.ANTLRInputStream;
+import org.antlr.runtime.CharStream;
+import org.antlr.runtime.CommonTokenStream;
+import org.antlr.runtime.RecognitionException;
+
+import TP2.asd.Program;
+
+public class Main {
+  public static void main(String[] args) {
+    try {
+      // Set input
+      CharStream input;
+      if (args.length == 0) {
+        // From standard input
+        input = new ANTLRInputStream(System.in);
+      } else {
+        // From file name in first argument
+        input = new ANTLRFileStream(args[0]);
+      }
+
+      // Instantiate Lexer
+      VSLLexer lexer = new VSLLexer(input);
+      CommonTokenStream tokens = new CommonTokenStream(lexer);
+
+      // Instantiate Parser
+      VSLParser parser = new VSLParser(tokens);
+
+      // Parse
+      Program ast = parser.program();
+
+      // Pretty-print the program (to debug parsing)
+      System.err.println("todo");
+
+      // Verify the program semantic
+
+      // Generate the intermediate representation
+      System.out.println("todo");
+
+    } catch (IOException | RecognitionException e) {
+      e.printStackTrace();
+      throw new RuntimeException("Unable to proceed");
+    }
+  }
+}