gitweb on Svarog

projekti pod git sistemom za održavanje verzija -- projects under the git version control system
mjc2wsl, made more robust against empty arguments and such
[mjc2wsl.git] / src / com / quemaster / transformations / mjc2wsl / mjc2wsl.java
index 9a61bbf..e33cd09 100644 (file)
@@ -40,7 +40,7 @@ import com.quemaster.transformations.TransMessages;
  */
 public class mjc2wsl{
        //default version name, used if the file is not found
-       private static String versionN = "0.1.x";
+       private static String versionN = "v0.2.x";
 
        private String versionFile = "/version.properties";
        
@@ -176,17 +176,17 @@ public class mjc2wsl{
        public String createStandardStart(int numWords){
                StringBuilder ret = new StringBuilder(
                        "C:\" This file automatically converted from microjava bytecode\";\n"
-                       +"C:\" with mjc2wsl "+getVersion()+"\";\n");
+                       +"C:\" with mjc2wsl "+getVersion()+"\";\n");
 
                ret.append("\nBEGIN");
                ret.append("\nVAR <\n\t");
                if (!genLocalVars){ 
                        ret.append("\n\ttempa := 0, tempb :=0, tempres := 0,");
-               }
+               } else
+                       ret.append("\n\tmjvm_flag_jump := 0,");
                ret.append("mjvm_locals := ARRAY(1,0),");
                ret.append("\n\tmjvm_statics := ARRAY("+numWords+",0),");
                ret.append("\n\tmjvm_arrays := < >,");
-               ret.append("\n\tmjvm_flag_jump := 0,");
                ret.append("\n\tmjvm_objects := < >,");
                ret.append("\n\tmjvm_estack := < >, mjvm_mstack := < > > :");
 
@@ -211,17 +211,12 @@ public class mjc2wsl{
 
                if (!genInlinePrint) {
                                ret.append("\nPROC Print_MJ(val, format VAR)==\n");
-                               ret.append(createComment("print spacing", C_SPEC));
-                               ret.append("\n\tIF format>1 THEN\n\t\tFOR i:=1 TO ");
-                               ret.append("MAX(0, format-SLENGTH(@String(tempb))) STEP 1 DO PRINFLUSH(\" \") OD\n");
-                               ret.append("\tFI;\n\tPRINFLUSH(val)\nEND\n");
+                               ret.append("PRINFLUSH(@Format(format, val ))");
+                               ret.append("\nEND\n");
 
                                ret.append("\nPROC Print_MJ_CHAR(val, format VAR)==\n");
-                               ret.append(createComment("print spacing", C_SPEC));
-                               ret.append("\n\tIF format>1 THEN\n\t\tFOR i:=2 TO ");
-                               ret.append("format STEP 1 DO PRINFLUSH(\" \") OD\n");
-                               ret.append("\tFI;\n\tPRINFLUSH(CHR(val))\n");
-                               ret.append("END\n");
+                               ret.append("PRINFLUSH(@Format(format, CHR(val)))");
+                               ret.append("\nEND\n");
                }
 
                ret.append("\nEND");
@@ -366,7 +361,7 @@ public class mjc2wsl{
                        if (genPrintForEachAddress) {
                                prl("PRINT(\"a" + mjInput.getCounter() + "\");");
                                if (genPauseAfterEachAddress)
-                                       prl("debug_disposable_string := @Read_Line(Standard_Input_Port);");
+                                       prl("@Read_Line_Proc(VAR debug_disposable_string, Standard_Input_Port);");
                        }
                        switch (op) {
                        case load: {
@@ -602,18 +597,26 @@ public class mjc2wsl{
                        case jle:
                        case jgt:
                        case jge: {
-                               prl(createStartVar("tempa", "tempb"));
-                               prl(createTopTwoEStack());
-                               prl("IF tempb " + mjInput.getRelationFor(op) 
-                                               + " tempa THEN mjvm_flag_jump := 1"
-                                               + " ELSE mjvm_flag_jump := 0" 
-                                               + " FI;");
-                               prl(createEndVar());
-                               prl("IF mjvm_flag_jump = 1 THEN CALL a"
-                                               + (mjInput.getCounter() + mjInput.get2()) 
-                                               + " ELSE CALL a" + (mjInput.getCounter() + 1)
-                                               + " FI;");
-                               
+                               if (genLocalVars) {
+                                               prl(createStartVar("tempa", "tempb"));
+                                               prl(createTopTwoEStack());
+                                               prl("IF tempb " + mjInput.getRelationFor(op)
+                                                               + " tempa THEN mjvm_flag_jump := 1"
+                                                               + " ELSE mjvm_flag_jump := 0"
+                                                               + " FI;");
+                                               prl(createEndVar());
+                                               prl("IF mjvm_flag_jump = 1 THEN CALL a"
+                                                               + (mjInput.getCounter() + mjInput.get2())
+                                                               + " ELSE CALL a" + (mjInput.getCounter() + 1)
+                                                               + " FI;");
+                               } else {
+                                               prl(createTopTwoEStack());
+                                               prl("IF tempb " + mjInput.getRelationFor(op)
+                                                               + " tempa THEN CALL a"
+                                                               + (mjInput.getCounter() + mjInput.get2())
+                                                               + " ELSE CALL a" + (mjInput.getCounter() + 1)
+                                                               + " FI;");
+                               }
                                break;
                        }
 
@@ -645,13 +648,18 @@ public class mjc2wsl{
 
                        // read, print
                        case bread: {
-                               // TODO make it a char for read
-                               messages.message("char is read like a number", TransMessages.M_WAR);
-                               prl(createComment("char is read like a number", C_SPEC));
+                               // TODO maybe we'll need a bufer for multi chars!
+                               prl(createStartVar("tempa"));
+                               prl("@Read_Line_Proc(VAR tempa, Standard_Input_Port);");
+                               prl("tempa := @String_To_List(tempa)[1];");
+                               prl(createToEStack("tempa"));
+                               prl(createEndVar());
+                               break;
                        }
                        case read: {
                                prl(createStartVar("tempa"));
-                               prl("tempa := @String_To_Num(@Read_Line(Standard_Input_Port));");
+                               prl("@Read_Line_Proc(VAR tempa, Standard_Input_Port);");
+                               prl("tempa := @String_To_Num(tempa);");
                                prl(createToEStack("tempa"));
                                prl(createEndVar());
                                break;
@@ -663,7 +671,7 @@ public class mjc2wsl{
                                prl(createTopTwoEStack());
                                if (genInlinePrint){
                                        prl(createComment("print spacing and transformation",C_SPEC));
-                                       prl("PRINFLUSH(SUBSTR(\"          \", 0, MIN(10, MAX(0,tempa-1))), @List_To_String(< tempb >));");
+                                       prl("PRINFLUSH(@Format(tempa, @List_To_String(< tempb >)));");
                                } else
                                        prl("Print_MJ_CHAR(tempb,tempa);");
                                prl(createEndVar());
@@ -675,7 +683,7 @@ public class mjc2wsl{
                                prl(createTopTwoEStack());
                                if (genInlinePrint){
                                        prl(createComment("print spacing",C_SPEC));
-                                       prl("PRINFLUSH(SUBSTR(\"          \", 0, MIN(10, MAX(0, tempa-SLENGTH(@String(tempb))))), tempb);");
+                                       prl("PRINFLUSH(@Format(tempa,tempb));");
                                }
                                else
                                        prl("Print_MJ(tempb,tempa);");
@@ -782,7 +790,7 @@ public class mjc2wsl{
        }
 
        public void printVersion() {
-               System.out.println("MicroJava bytecode to WSL converter. v " + getVersion()
+               System.out.println("MicroJava bytecode to WSL converter " + getVersion()
                                + ", by Doni Pracner");
        }
        
@@ -798,7 +806,7 @@ public class mjc2wsl{
                        printHelp();
                } else {
                        int i = 0;
-                       while (i < args.length && args[i].charAt(0) == '-') {
+                       while (i < args.length && args[i].length() > 0 && args[i].charAt(0) == '-') {
                                if (args[i].compareTo("-h") == 0) {
                                        printHelp();
                                        return;
@@ -850,6 +858,8 @@ public class mjc2wsl{
                                        genLocalVars = true;
                                } else if (args[i].compareToIgnoreCase("--genGlobalVars") == 0) {
                                        genLocalVars = false;
+                               } else {
+                                       System.err.println("unknown option: "+args[i]);
                                }
                                i++;
                        }
@@ -860,7 +870,7 @@ public class mjc2wsl{
                        }
 
                        Path p = FileSystems.getDefault().getPath(args[i]);
-                       if (!Files.exists(p)){
+                       if (!Files.isRegularFile(p)){
                                System.err.println("input file does not exist");
                                System.exit(1);
                        }
Svarog.pmf.uns.ac.rs/gitweb maintanance Doni Pracner