gitweb on Svarog

projekti pod git sistemom za održavanje verzija -- projects under the git version control system
mjc2wsl - use the new Read_Line_Proc instead of the function version
[mjc2wsl.git] / src / com / quemaster / transformations / mjc2wsl / mjc2wsl.java
index 68fd2a1..c890fef 100644 (file)
@@ -42,7 +42,7 @@ public class mjc2wsl{
        //default version name, used if the file is not found
        private static String versionN = "0.1.x";
 
-       private String versionFile = "version.properties";
+       private String versionFile = "/version.properties";
        
        private TransMessages messages = new TransMessages();
 
@@ -52,7 +52,9 @@ public class mjc2wsl{
                
        private boolean genPopPush=false;
        
-       private boolean genInlinePrint=false;
+       private boolean genInlinePrint = false;
+       
+       private boolean genLocalVars = true;
 
        /** Constant used for marking a regular comment from the original file */
        public static final char C_REG = ' ';
@@ -178,10 +180,13 @@ public class mjc2wsl{
 
                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 := < > > :");
 
@@ -207,8 +212,8 @@ 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:=2 TO ");
-                               ret.append("format STEP 1 DO PRINFLUSH(\" \") OD\n");
+                               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("\nPROC Print_MJ_CHAR(val, format VAR)==\n");
@@ -224,17 +229,23 @@ public class mjc2wsl{
        }
 
        private String createStartVar(String... vars){
-               StringBuilder ret = new StringBuilder("VAR < ");
-               ret.append(vars[0] + " := 0");
-               for (int i=1; i<vars.length; i++)
-                               ret.append(", "+ vars[i] +" := 0");
-               ret.append(" > : ");
-               
-               return ret.toString();
+               if (genLocalVars) {
+                       StringBuilder ret = new StringBuilder("VAR < ");
+                       ret.append(vars[0] + " := 0");
+                       for (int i = 1; i < vars.length; i++)
+                               ret.append(", " + vars[i] + " := 0");
+                       ret.append(" > : ");
+
+                       return ret.toString();
+               }
+               return "";
        }
        
        private String createEndVar(){
-               return "ENDVAR;";
+               if (genLocalVars)
+                       return "ENDVAR;";
+               else
+                       return "";
        }
        
        private String createLocal(int i) {
@@ -355,7 +366,7 @@ 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: {
@@ -591,18 +602,26 @@ 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;
                        }
 
@@ -640,7 +659,8 @@ public class mjc2wsl{
                        }
                        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;
@@ -659,7 +679,6 @@ public class mjc2wsl{
                                break;
                        }
                        case print: {
-                               // TODO printing numbers needs different lengths of spacing
                                prl(createStartVar("tempa", "tempb"));
 
                                prl(createTopTwoEStack());
@@ -743,12 +762,21 @@ public class mjc2wsl{
        }
 
        public void printHelpDirectives(){
-               System.out.println("Alternatives for code generation:");
-               System.out.println("  --genPopPush generate POP/PUSH instead of TAIL/HEAD");
-               System.out.println("  --genHeadTail generate TAIL/HEAD instead of POP/PUSH ");
+               System.out.println("Alternatives for code generation (* are the defaults):");
+               System.out.print(genPopPush?'*':' ');
+               System.out.println(" --genPopPush generate POP/PUSH instead of TAIL/HEAD");
+               System.out.print(!genPopPush?'*':' ');
+               System.out.println(" --genHeadTail generate TAIL/HEAD instead of POP/PUSH ");
+               System.out.println();
+               System.out.print(genInlinePrint?'*':' ');
+               System.out.println(" --genInlinePrint generate prints directly instead of procedure calls");
+               System.out.print(!genInlinePrint?'*':' ');
+               System.out.println(" --genProcedurePrint generate prints as custom procedure calls");
                System.out.println();
-               System.out.println("  --genInlinePrint generate prints directly instead of procedure calls");
-               System.out.println("  --genProcedurePrint generate prints as custom procedure calls");
+               System.out.print(genLocalVars?'*':' ');
+               System.out.println(" --genLocalVars generate local VAR block for temp variables");
+               System.out.print(!genLocalVars?'*':' ');
+               System.out.println(" --genGlobalVars do NOT generate local VAR block for temp variables");
        }
 
        public void printHelpHelp() {
@@ -827,6 +855,12 @@ public class mjc2wsl{
                                        genPopPush = false;
                                } else if (args[i].compareToIgnoreCase("--genProcedurePrint") == 0) {
                                        genInlinePrint = false;
+                               } else if (args[i].compareToIgnoreCase("--genLocalVars") == 0) {
+                                       genLocalVars = true;
+                               } else if (args[i].compareToIgnoreCase("--genGlobalVars") == 0) {
+                                       genLocalVars = false;
+                               } else {
+                                       System.err.println("unknown option: "+args[i]);
                                }
                                i++;
                        }
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