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projekti pod git sistemom za održavanje verzija -- projects under the git version control system
diff --git a/src/com/qumaster/transformations/mjc2wsl/mjc2wsl.java b/src/com/qumaster/transformations/mjc2wsl/mjc2wsl.java
private boolean originalInComments = false;
- private HashMap<Integer,String> opMap = null;
-
- private String opCodeFile = "mj-bytecodes.properties";
-
- private HashMap<Integer, String> getOpMap() {
- if (opMap == null) {
- opMap = new HashMap<Integer, String>(60, 0.98f);
- try {
- BufferedReader in = new BufferedReader(new InputStreamReader(
- getClass().getResourceAsStream(opCodeFile)));
- String str = in.readLine();
- while (str != null) {
- String[] ss = str.split("=");
- opMap.put(Integer.parseInt(ss[0]), ss[1]);
- str = in.readLine();
- }
- in.close();
- } catch (Exception ex) {
- ex.printStackTrace();
- }
- }
- return opMap;
- }
-
private Properties versionData;
private String getVersion() {
return versionN;
}
- public String getOpString(int op) {
- return getOpMap().get(op);
- }
+ MicroJavaInput mjInput = new MicroJavaInput();
- public String describeOpCode(int op) {
- return op + " (" + getOpString(op) + ")";
- }
-
- private InputStream mainIn;
private PrintWriter out = null;
- private int counter = -1;
+
private void pr(int i){
out.print(i);
out.println(i);
}
- private int get() {
- int res = -1;
- try {
- res = mainIn.read();
- if (res >= 0)
- res = res << 24 >>> 24;
- } catch (IOException ex) {
- ex.printStackTrace();
- }
- counter++;
- return res;
- }
-
- private int get2() {
- return (get() * 256 + get()) << 16 >> 16;
- }
-
- private int get4() {
- return (get2() << 16) + (get2() << 16 >>> 16);
- }
-
public String createStandardStart(){
return createStandardStart(10);
}
return createFromStack("mjvm_mstack", st);
}
- private String getRelationFor(int opcode) throws Exception {
- switch (opcode) {
- case jeq: return "=";
- case jne: return "<>";
- case jlt: return "<";
- case jle: return "<=";
- case jgt: return ">";
- case jge: return ">=";
- }
- throw new Exception("Wrong opcode for a relation");
- }
-
- private boolean isJumpCode(int opcode) {
- return (opcode >= jmp) && (opcode <= jge);
- }
-
public void convertStream(InputStream ins) throws Exception{
- mainIn = ins;
+ mjInput.setStream(ins);
//process start
- byte m = (byte) get();
- byte j = (byte) get();
- if (m!='M' || j !='J')
- throw new Exception("Wrong start of bytecode file");
- int codesize = get4();
- int numberOfWords = get4();
- int mainAdr = get4();
+ mjInput.processHeader(this);
- prl(createStandardStart(numberOfWords));
- prl("SKIP;\n ACTIONS a" + (14 + mainAdr) + " :");
- int op = get();
+ prl(createStandardStart(mjInput.getNumberOfWords(this)));
+ prl("SKIP;\n ACTIONS a" + (14 + mjInput.getMainAdr(this)) + " :");
+ int op = mjInput.get();
while (op >= 0) {
- prl(" a" + counter + " ==");
+ prl(" a" + mjInput.getCounter() + " ==");
if (originalInComments)
- prl(createComment(describeOpCode(op), C_OC));
+ prl(createComment(mjInput.describeOpCode(op), C_OC));
if (genPrintForEachAddress) {
- prl("PRINT(\"a" + counter + "\");");
+ prl("PRINT(\"a" + mjInput.getCounter() + "\");");
if (genPauseAfterEachAddress)
prl("debug_disposable_string := @Read_Line(Standard_Input_Port);");
}
switch (op) {
case load: {
- prl(createToEStack(createLocal(get())));
+ prl(createToEStack(createLocal(mjInput.get())));
break;
}
case load_0:
break;
}
case store: {
- prl(createFromEStack(createLocal(get())));
+ prl(createFromEStack(createLocal(mjInput.get())));
break;
}
case store_0:
}
case getstatic: {
- prl(createToEStack(createStatic(get2())));
+ prl(createToEStack(createStatic(mjInput.get2())));
break;
}
case putstatic: {
- prl(createFromEStack(createStatic(get2())));
+ prl(createFromEStack(createStatic(mjInput.get2())));
break;
}
case getfield: {
- int f = get2();
+ int f = mjInput.get2();
prl(createStartVar("tempa"));
prl(createTopEStack());
prl(createToEStack(createObject("tempa") + "[" + (f + 1) + "]"));
break;
}
case putfield: {
- int f = get2();
+ int f = mjInput.get2();
prl(createStartVar("tempa", "tempb"));
prl(createTopTwoEStack());
prl(createObject("tempb") + "[" + (f + 1) + "]:=tempa;");
}
case const_: {
- prl(createToEStack(get4()));
+ prl(createToEStack(mjInput.get4()));
break;
}
}
case inc: {
- int b1 = get(), b2 = get();
+ int b1 = mjInput.get(), b2 = mjInput.get();
prl(createLocal(b1) + " := " + createLocal(b1) + " + " + b2 + ";");
break;
}
case new_: {
- int size = get2();
+ int size = mjInput.get2();
// TODO maybe objects and arrays should be in the same list?
prl("mjvm_objects := mjvm_objects ++ < ARRAY(" + size
+ ",0) >;");
break;
}
case newarray: {
- get();// 0 - bytes, 1 - words; ignore for now
+ mjInput.get();// 0 - bytes, 1 - words; ignore for now
// TODO take into consideration 0/1
prl(createStartVar("tempa"));
prl(createTopEStack());
}
case jmp: {
- prl("CALL a" + (counter + get2()) + ";");
+ prl("CALL a" + (mjInput.getCounter() + mjInput.get2()) + ";");
break;
}
case jge: {
prl(createStartVar("tempa", "tempb"));
prl(createTopTwoEStack());
- prl("IF tempb " + getRelationFor(op)
+ 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"
- + (counter + get2())
- + " ELSE CALL a" + (counter + 1)
+ + (mjInput.getCounter() + mjInput.get2())
+ + " ELSE CALL a" + (mjInput.getCounter() + 1)
+ " FI;");
break;
}
case call: {
- prl("CALL a" + (counter + get2()) + ";");
+ prl("CALL a" + (mjInput.getCounter() + mjInput.get2()) + ";");
break;
}
case return_: {
// we let the actions return
// there is nothing to clean up
- prl("SKIP\n END\n b" + counter + " ==");
+ prl("SKIP\n END\n b" + mjInput.getCounter() + " ==");
break;
}
case enter: {
- int parameters = get();
+ int parameters = mjInput.get();
- int locals = get();
+ int locals = mjInput.get();
prl(createToMStack("mjvm_locals"));
prl("mjvm_locals := ARRAY(" + locals + ",0);");
for (int i = parameters - 1; i >= 0; i--)
}
case trap: {
- prl("ERROR(\"Runtime error: trap(" + get() + ")\");");
+ prl("ERROR(\"Runtime error: trap(" + mjInput.get() + ")\");");
break;
}
break;
}
- boolean wasJump = isJumpCode(op);
- op = get();
+ boolean wasJump = mjInput.isJumpCode(op);
+ op = mjInput.get();
if (op >= 0)
if (wasJump)
prl("SKIP\n END");
else
- prl("CALL a" + counter + "\n END");
+ prl("CALL a" + mjInput.getCounter() + "\n END");
}
prl("SKIP\n END\nENDACTIONS;\n");
pr(createStandardEnd());
public static void main(String[] args) {
new mjc2wsl().run(args);
}
+
+
}
\ No newline at end of file