X-Git-Url: http://svarog.pmf.uns.ac.rs/gitweb/?p=mjc2wsl.git;a=blobdiff_plain;f=src%2Fmjc2wsl.java;h=f84fc3a29ae758a6575b950d061f6ed936d42487;hp=4a30186c26ffc1c0526f291014591f44b40118d7;hb=34fbcd7d5825cd670082f11dcec087e5121c8115;hpb=b253d0a42f133c1c69cb35fcb923b4e0db7b1c2b diff --git a/src/mjc2wsl.java b/src/mjc2wsl.java index 4a30186..f84fc3a 100644 --- a/src/mjc2wsl.java +++ b/src/mjc2wsl.java @@ -10,8 +10,28 @@ import java.util.*; * @author Doni Pracner, http://perun.dmi.rs/pracner http://quemaster.com */ public class mjc2wsl{ - public static String versionN = "0.1.2"; + public static String versionN = "0.1.3"; + 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]); + } + /** Constant used for marking a regular comment from the original file */ public static final char C_REG = ' '; /** @@ -92,7 +112,7 @@ public class mjc2wsl{ ret.append("VAR < tempa := 0, tempb := 0, tempres :=0,\n"); for (int i = 0; i <= 3; i++) ret.append("loc" + i + " := 0, "); - ret.append("\n estack := < >, t_e_m_p := 0 > :"); + ret.append("\n estack := < >, mstack := < >, t_e_m_p := 0 > :"); return ret.toString(); } @@ -166,6 +186,8 @@ public class mjc2wsl{ return "C:\"" + type + str.replace("\"", "''") + "\";"; } + //Expression stack + private String cmdToEStack(int i) { return "estack := <" + i + " > ++ estack;"; } @@ -185,8 +207,34 @@ public class mjc2wsl{ private String getTop() { return cmdFromEStack("tempa"); } + + //Method stack + + private String cmdToMStack(int i) { + return "mstack := <" + i + " > ++ mstack;"; + } + + private String cmdToMStack(String i) { + return "mstack := <" + i + " > ++ mstack;"; + } + + private String cmdFromMStack(String st) { + return st + " := HEAD(mstack); mstack := TAIL(mstack);"; + } + + 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"); + } - public void convertStream(InputStream ins){ + public void convertStream(InputStream ins) throws Exception{ mainIn = ins; //skip start TODO make better for (int i = 0; i < 14; i++) @@ -222,6 +270,10 @@ public class mjc2wsl{ prl(cmdFromEStack(loc(op - store_0))); break; } + + //TODO getstatic, putstatic + //TODO getfield, putfield + case const_: { prl(cmdToEStack(get4())); break; @@ -237,6 +289,45 @@ public class mjc2wsl{ break; } + case add: { + prl(getTopTwo()); + prl("tempres := tempb + tempa;"); + prl(cmdToEStack("tempres")); + break; + } + case sub: { + prl(getTopTwo()); + prl("tempres := tempb - tempa;"); + prl(cmdToEStack("tempres")); + break; + } + case mul: { + prl(getTopTwo()); + prl("tempres := tempb * tempa;"); + prl(cmdToEStack("tempres")); + break; + } + case div: { + prl(getTopTwo()); + prl("IF tempa = 0 THEN ERROR(\"division by zero\") FI;"); + prl("tempres := tempb DIV tempa;"); + prl(cmdToEStack("tempres")); + break; + } + case rem: { + prl(getTopTwo()); + prl("IF tempa = 0 THEN ERROR(\"division by zero\") FI;"); + prl("tempres := tempb MOD tempa;"); + prl(cmdToEStack("tempres")); + break; + } + + //TODO neg, shl, shr, inc + //TODO new_ newarray + //TODO aload, asstore, baload, bastore + //TODO arraylength + //TODO pop, dup, dup2 + case jmp: { prl("CALL a" + (counter + get2()) + ";"); break; @@ -249,39 +340,38 @@ public class mjc2wsl{ case jgt: case jge: { prl(getTopTwo()); - prl("IF tempb >= tempa THEN CALL a" + (counter + get2()) + prl("IF tempb "+ getRelationFor(op) + +" tempa THEN CALL a" + (counter + get2()) + " FI;"); break; } - case add: { - prl(getTopTwo()); - prl("tempres := tempb + tempa;"); - prl(cmdToEStack("tempres")); + case call: { + prl(cmdToMStack(counter+2)); + prl("CALL a" + (counter + get2()) + ";"); break; } - case div: { - prl(getTopTwo()); - prl("tempres := tempb / tempa;"); - prl(cmdToEStack("tempres")); + + case return_: { + prl(createComment("return not fully procesed yet")); + message("return not fully procesed yet", M_WAR); break; } - case enter: { prl(createComment("enter not fully procesed yet")); + message("enter not fully procesed yet", M_WAR); get(); get(); break; } - case return_: { - prl(createComment("return not fully procesed yet")); - break; - } case exit: { prl(createComment("exit not fully procesed yet")); + message("exit not fully procesed yet", M_WAR); break; } + //TODO read, print + // the prints case bprint: { prl(getTopTwo()); @@ -296,9 +386,13 @@ public class mjc2wsl{ } default: prl(createComment("unknown op error: " + op, C_ERR)); + message("unknown op error: "+ op, M_ERR); break; } + //TODO trap + + op = get(); if (op >= 0) prl("CALL a" + counter + " END"); @@ -321,7 +415,10 @@ public class mjc2wsl{ + ", by Doni Pracner"); System.out.println("usage:\n\t {options} mjc2wsl filename [outfile]"); System.out.println("options:\n\t--screen print output to screen"); - System.out.println("\t-o --oc include original code in comments"); + System.out.println("\t-o --oc[+-] include original code in comments"); + System.out.println("\t-v verbose, print warning messages"); + System.out.println("\t-q don't print even the error messages"); + System.out.println("\t-d print detailed debug messages"); } public String makeDefaultOutName(String inname){ @@ -350,6 +447,12 @@ public class mjc2wsl{ originalInComments = true; } else if (args[i].startsWith("--screen")) { out = new PrintWriter(System.out); + } else if (args[i].compareTo("-d") == 0) { + printLevel = M_DEB;//print debug info + } else if (args[i].compareTo("-v") == 0) { + printLevel = M_WAR;//print warnings + } else if (args[i].compareTo("-q") == 0) { + printLevel = M_ERR+1;//no printing } i++; } @@ -383,6 +486,7 @@ public class mjc2wsl{ long mili = Calendar.getInstance().getTimeInMillis() - now.getTimeInMillis(); System.out.println("conversion time:" + mili + " ms"); + printMessageCounters(); out.close(); } else System.out.println("file does not exist");