refactor - extract the Messages system into a new class

diff --git a/src/TransMessages.java b/src/TransMessages.java
new file mode 100644 (file)
index 0000000..a544421
--- /dev/null
+++ b/src/TransMessages.java
@@ -0,0 +1,46 @@
+import java.io.PrintStream;
+
+
+/**
+ * Handle the messages that the translator (or someone else) will
+ * give to this class depending on the print level.
+ *
+ */
+public class TransMessages {
+       private int printLevel;
+       public int[] messageCounters;
+       public static final int M_DEB = 0;
+       public static final int M_WAR = 1;
+       public static final int M_ERR = 2;
+       public static final int M_QUIET = 3;
+       private PrintStream outStream;
+
+       public TransMessages() {
+               this.setPrintLevel(M_ERR);
+               this.messageCounters = new int[TransMessages.M_QUIET];
+       }
+
+       void message(String mes, int level){
+                       if (level>=getPrintLevel()) {
+                               outStream = System.out;
+                               outStream.println(mes);
+                       }
+                       messageCounters[level]++;
+       }
+
+       void printMessageCounters(PrintStream out){
+                       out.println("total errors:"+messageCounters[TransMessages.M_ERR]+" warnings:"+messageCounters[TransMessages.M_WAR]);
+       }
+
+       void printMessageCounters(){
+                       printMessageCounters(outStream);
+       }
+
+       public int getPrintLevel() {
+               return printLevel;
+       }
+
+       public void setPrintLevel(int printLevel) {
+               this.printLevel = printLevel;
+       }
+}
\ No newline at end of file

diff --git a/src/mjc2wsl.java b/src/mjc2wsl.java
index dafe6e4..e23b10e 100644 (file)
--- a/src/mjc2wsl.java
+++ b/src/mjc2wsl.java
@@ -12,26 +12,8 @@ import java.util.*;
 public class mjc2wsl{
        public static String versionN = "0.1.4";
 
-       public static final int M_ERR = 2, M_WAR = 1, M_DEB = 0;
-       
-       private int printLevel = M_ERR;
-       
-       private int[] messageCounters = new int[M_ERR+1];
-       
-       private void message(String mes, int level){
-                       if (level>=printLevel)
-                                       System.out.println(mes);
-                       messageCounters[level]++;
-       }
-       
-       private void printMessageCounters(){
-                       printMessageCounters(System.out);
-       }
-       
-       private void printMessageCounters(PrintStream out){
-                       out.println("total errors:"+messageCounters[M_ERR]+" warnings:"+messageCounters[M_WAR]);
-       }
-       
+       private TransMessages messages = new TransMessages();
+
        private boolean genPauseAfterEachAddress=false, 
                genPrintForEachAddress = false,
                genPrintEStackOnChange = false;
@@ -108,31 +90,6 @@ public class mjc2wsl{
                bprint      = 56,
                trap            = 57;
 
-       public String createStandardStart(){
-                       return createStandardStart(10);
-       }
-       
-       public String createStandardStart(int numWords){
-               StringBuilder ret = new StringBuilder(
-                       "C:\" This file automatically converted from microjava bytecode\";\n"
-                       +"C:\" with mjc2wsl v "+versionN+"\";\n");
-
-               ret.append("VAR < tempa := 0, tempb := 0, tempres :=0,\n\t");
-               ret.append("mjvm_locals := ARRAY(1,0), ");
-               ret.append("\n\tmjvm_statics := ARRAY("+numWords+",0), ");
-               ret.append("\n\tmjvm_arrays := < >, ");
-               ret.append("\n\tmjvm_objects := < >, ");
-               ret.append("\n  mjvm_estack := < >, mjvm_mstack := < >, "); 
-               ret.append("\n  mjvm_fp := 0, mjvm_sp := 0,");
-               ret.append("\n  t_e_m_p := 0 > :");
-
-               return ret.toString();
-       }
-
-       public String createStandardEnd(){
-               return "SKIP\nENDVAR";
-       }
-       
        private boolean originalInComments = false;     
        
        private HashMap<Integer,String> opMap = null;
@@ -208,6 +165,31 @@ public class mjc2wsl{
                return (get2() << 16) + (get2() << 16 >>> 16);
        }
        
+       public String createStandardStart(){
+                       return createStandardStart(10);
+       }
+
+       public String createStandardStart(int numWords){
+               StringBuilder ret = new StringBuilder(
+                       "C:\" This file automatically converted from microjava bytecode\";\n"
+                       +"C:\" with mjc2wsl v "+versionN+"\";\n");
+       
+               ret.append("VAR < tempa := 0, tempb := 0, tempres :=0,\n\t");
+               ret.append("mjvm_locals := ARRAY(1,0), ");
+               ret.append("\n\tmjvm_statics := ARRAY("+numWords+",0), ");
+               ret.append("\n\tmjvm_arrays := < >, ");
+               ret.append("\n\tmjvm_objects := < >, ");
+               ret.append("\n  mjvm_estack := < >, mjvm_mstack := < >, "); 
+               ret.append("\n  mjvm_fp := 0, mjvm_sp := 0,");
+               ret.append("\n  t_e_m_p := 0 > :");
+       
+               return ret.toString();
+       }
+
+       public String createStandardEnd(){
+               return "SKIP\nENDVAR";
+       }
+
        private String createLocal(int i) {
                // arrays start at 1 in WSL, so we need an offset
                return "mjvm_locals[" + (i + 1) + "]";
@@ -505,8 +487,7 @@ public class mjc2wsl{
                                prl(createComment(
                                                "array length not known - LENGTH not aplicable to arrays",
                                                C_ERR));
-                               message("array length not known - LENGTH not aplicable to arrays",
-                                               M_ERR);
+                               messages.message("array length not known - LENGTH not aplicable to arrays", TransMessages.M_ERR);
                                prl(createComment("put 1 on the stack for consistency", C_SPEC));
                                prl(createToEStack(1));
                                break;
@@ -579,7 +560,7 @@ public class mjc2wsl{
                        // read, print
                        case bread: {
                                // TODO make it a char for read
-                               message("char is read like a number", M_WAR);
+                               messages.message("char is read like a number", TransMessages.M_WAR);
                                prl(createComment("char is read like a number", C_SPEC));
                        }
                        case read: {
@@ -591,7 +572,7 @@ public class mjc2wsl{
                        // the prints
                        case bprint: {
                                // TODO need to make it a char on print
-                               message("chars will be printed as number codes", M_WAR);
+                               messages.message("chars will be printed as number codes", TransMessages.M_WAR);
                                prl(createComment("char will be printed as a number code",
                                                C_SPEC));
                        }
@@ -611,7 +592,7 @@ public class mjc2wsl{
 
                        default:
                                prl(createComment("unknown op error: " + op, C_ERR));
-                               message("unknown op error: " + op, M_ERR);
+                               messages.message("unknown op error: " + op, TransMessages.M_ERR);
                                break;
                        }
 
@@ -673,11 +654,11 @@ public class mjc2wsl{
                                } else if (args[i].compareTo("--screen") == 0) {
                                        out = new PrintWriter(System.out);
                                } else if (args[i].compareTo("-d") == 0) {
-                                       printLevel = M_DEB;// print debug info
+                                       messages.setPrintLevel(TransMessages.M_DEB);// print debug info
                                } else if (args[i].compareTo("-v") == 0) {
-                                       printLevel = M_WAR;// print warnings
+                                       messages.setPrintLevel(TransMessages.M_WAR);// print warnings
                                } else if (args[i].compareTo("-q") == 0) {
-                                       printLevel = M_ERR + 1;// no printing
+                                       messages.setPrintLevel(TransMessages.M_QUIET);// no printing
                                } else if (args[i].compareToIgnoreCase("--genEStackPrint") == 0) {
                                        genPrintEStackOnChange = true;
                                } else if (args[i].compareToIgnoreCase("--genAddrPause") == 0) {
@@ -724,7 +705,7 @@ public class mjc2wsl{
                                long mili = Calendar.getInstance().getTimeInMillis()
                                                - now.getTimeInMillis();
                                System.out.println("conversion time:" + mili + " ms");
-                               printMessageCounters();
+                               messages.printMessageCounters();
                                out.close();
                        } else
                                System.out.println("file does not exist");