Merge branch 'instance-calculator'

1 files changed, 62 insertions, 0 deletions

diff --git a/instance-calculator/src/QuickParser.java b/instance-calculator/src/QuickParser.java
new file mode 100644
index 0000000..383373e
--- /dev/null
+++ b/instance-calculator/src/QuickParser.java
@@ -0,0 +1,62 @@
+import java.io.BufferedReader;
+import java.io.FileReader;
+import java.io.IOException;
+import java.io.FileNotFoundException;
+
+import java.util.List;
+import java.util.regex.Matcher;
+import java.util.regex.Pattern;
+
+public class QuickParser
+{
+   private static final Pattern instr_pattern;
+   private final BufferedReader buffered_reader;
+
+   static
+   {
+      instr_pattern = Pattern.compile("\\((?<list>[a-z_0-9 \"]+)\\)");
+   }
+   public QuickParser (final String filename)
+   throws FileNotFoundException
+   {
+      buffered_reader = new BufferedReader(new FileReader(filename));
+   }
+
+   public void finalize ()
+   throws IOException
+   {
+      buffered_reader.close();
+   }
+
+   public String[] parse_line ()
+   throws IOException
+   {
+      final List<String> result;
+      final Matcher matcher;
+      String line;
+
+      do
+      {
+         line = buffered_reader.readLine();
+
+         if (line == null)
+         {
+            return new String[0];
+         }
+
+         line = line.replaceAll("\\s+"," ");
+      }
+      while (line.length() < 3 || line.startsWith(";"));
+
+      matcher = instr_pattern.matcher(line);
+
+      if (!matcher.find())
+      {
+         System.err.println("[E] Invalid instruction \"" + line + "\"");
+
+         return null;
+      }
+
+      return matcher.group(1).split(" |\t");
+   }
+}