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| author | Doni Pracner <quinnuendo@gmail.com> | |
| Sun, 27 Jul 2014 21:10:57 +0000 (23:10 +0200) | ||
| committer | Doni Pracner <quinnuendo@gmail.com> | |
| Sun, 27 Jul 2014 21:12:01 +0000 (23:12 +0200) |
| src/TransMessages.java | [deleted file] | patch | blob | history |
| src/com/qumaster/transformations/TransMessages.java | [new file with mode: 0644] | patch | blob |
| src/com/qumaster/transformations/mjc2wsl/mjc2wsl.java | [new file with mode: 0644] | patch | blob |
| src/mjc2wsl.java | [deleted file] | patch | blob | history |
diff --git a/src/TransMessages.java b/src/TransMessages.java
--- a/src/TransMessages.java
+++ /dev/null
@@ -1,62 +0,0 @@
-/*
- Copyright (C) 2014 Doni Pracner
-
- This file is part of mjc2wsl.
-
- mjc2wsl is free software: you can redistribute it and/or modify
- it under the terms of the GNU General Public License as published by
- the Free Software Foundation, either version 3 of the License, or
- (at your option) any later version.
-
- mjc2wsl is distributed in the hope that it will be useful,
- but WITHOUT ANY WARRANTY; without even the implied warranty of
- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- GNU General Public License for more details.
-
- You should have received a copy of the GNU General Public License
- along with mjc2wsl. If not, see <http://www.gnu.org/licenses/>.
-*/
-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 = System.out;
-
- public TransMessages() {
- this.setPrintLevel(M_ERR);
- this.messageCounters = new int[TransMessages.M_QUIET];
- }
-
- void message(String mes, int level){
- if (level>=getPrintLevel()) {
- 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/com/qumaster/transformations/TransMessages.java b/src/com/qumaster/transformations/TransMessages.java
--- /dev/null
@@ -0,0 +1,63 @@
+package com.qumaster.transformations;
+/*
+ Copyright (C) 2014 Doni Pracner
+
+ This file is part of mjc2wsl.
+
+ mjc2wsl is free software: you can redistribute it and/or modify
+ it under the terms of the GNU General Public License as published by
+ the Free Software Foundation, either version 3 of the License, or
+ (at your option) any later version.
+
+ mjc2wsl is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ GNU General Public License for more details.
+
+ You should have received a copy of the GNU General Public License
+ along with mjc2wsl. If not, see <http://www.gnu.org/licenses/>.
+*/
+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 = System.out;
+
+ public TransMessages() {
+ this.setPrintLevel(M_ERR);
+ this.messageCounters = new int[TransMessages.M_QUIET];
+ }
+
+ public void message(String mes, int level){
+ if (level>=getPrintLevel()) {
+ outStream.println(mes);
+ }
+ messageCounters[level]++;
+ }
+
+ public void printMessageCounters(PrintStream out){
+ out.println("total errors:"+messageCounters[TransMessages.M_ERR]+" warnings:"+messageCounters[TransMessages.M_WAR]);
+ }
+
+ public 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/com/qumaster/transformations/mjc2wsl/mjc2wsl.java b/src/com/qumaster/transformations/mjc2wsl/mjc2wsl.java
--- /dev/null
@@ -0,0 +1,939 @@
+package com.qumaster.transformations.mjc2wsl;
+/*
+ Copyright (C) 2014 Doni Pracner
+
+ This file is part of mjc2wsl.
+
+ mjc2wsl is free software: you can redistribute it and/or modify
+ it under the terms of the GNU General Public License as published by
+ the Free Software Foundation, either version 3 of the License, or
+ (at your option) any later version.
+
+ mjc2wsl is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ GNU General Public License for more details.
+
+ You should have received a copy of the GNU General Public License
+ along with mjc2wsl. If not, see <http://www.gnu.org/licenses/>.
+*/
+import java.io.*;
+import java.util.*;
+
+import com.qumaster.transformations.TransMessages;
+
+/**
+ * This program converts file from compiled MicroJava bytecode to WSL language
+ * which is a part of the FermaT Transformation system. MicroJava is a subset
+ * used in Compiler Construction courses by Hanspeter Moessenboeck, not
+ * "Java ME".
+ *
+ * @author Doni Pracner, http://perun.dmi.rs/pracner http://quemaster.com
+ */
+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 TransMessages messages = new TransMessages();
+
+ private boolean genPauseAfterEachAddress=false,
+ genPrintForEachAddress = false,
+ genPrintEStackOnChange = false;
+
+ private boolean genPopPush=false;
+
+ private boolean genInlinePrint=false;
+
+ /** Constant used for marking a regular comment from the original file */
+ public static final char C_REG = ' ';
+ /**
+ * Constant used for marking when original code is inserted in the file,
+ * next to the translations
+ */
+ public static final char C_OC = '#';
+ /** Constant used for marking special messages from the translator */
+ public static final char C_SPEC = '&';
+ /** Constant used for marking error messages from the translator */
+ public static final char C_ERR = '!';
+
+ /** instruction code in MicroJava bytecode. */
+ public static final int
+ load = 1,
+ load_0 = 2,
+ load_1 = 3,
+ load_2 = 4,
+ load_3 = 5,
+ store = 6,
+ store_0 = 7,
+ store_1 = 8,
+ store_2 = 9,
+ store_3 = 10,
+ getstatic = 11,
+ putstatic = 12,
+ getfield = 13,
+ putfield = 14,
+ const_0 = 15,
+ const_1 = 16,
+ const_2 = 17,
+ const_3 = 18,
+ const_4 = 19,
+ const_5 = 20,
+ const_m1 = 21,
+ const_ = 22,
+ add = 23,
+ sub = 24,
+ mul = 25,
+ div = 26,
+ rem = 27,
+ neg = 28,
+ shl = 29,
+ shr = 30,
+ inc = 31,
+ new_ = 32,
+ newarray = 33,
+ aload = 34,
+ astore = 35,
+ baload = 36,
+ bastore = 37,
+ arraylength = 38,
+ pop = 39,
+ dup = 40,
+ dup2 = 41,
+ jmp = 42,
+ jeq = 43,
+ jne = 44,
+ jlt = 45,
+ jle = 46,
+ jgt = 47,
+ jge = 48,
+ call = 49,
+ return_ = 50,
+ enter = 51,
+ exit = 52,
+ read = 53,
+ print = 54,
+ bread = 55,
+ bprint = 56,
+ trap = 57;
+
+ 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() {
+ if (versionData == null) {
+ versionData = new Properties();
+ try {
+ versionData.load(getClass().getResourceAsStream(versionFile));
+ } catch (IOException e) {
+ e.printStackTrace();
+ }
+ }
+ String ver = versionData.getProperty("version");
+ if (ver != null)
+ return ver;
+ else
+ return versionN;
+ }
+
+ public String getOpString(int op) {
+ return getOpMap().get(op);
+ }
+
+ 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);
+ }
+
+ private void pr(char i){
+ out.print(i);
+ }
+
+ private void pr(String i){
+ out.print(i);
+ }
+
+ private void prl(String 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);
+ }
+
+ public String createStandardStart(int numWords){
+ StringBuilder ret = new StringBuilder(
+ "C:\" This file automatically converted from microjava bytecode\";\n"
+ +"C:\" with mjc2wsl v "+getVersion()+"\";\n");
+
+ ret.append("\nBEGIN");
+ ret.append("\nVAR <\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_flag_jump := 0,");
+ ret.append("\n\tmjvm_objects := < >,");
+ ret.append("\n\tmjvm_estack := < >, mjvm_mstack := < > > :");
+
+ return ret.toString();
+ }
+
+ public String createAsciiString(){
+ StringBuilder ret = new StringBuilder("C:\"char array for ascii code conversions\";");
+ ret.append("\nascii := \"????????????????????????????????\"++\n");
+ ret.append("\" !\"++Quote++\"#$%&'()*+,-./0123456789:;<=>?@ABCDEFGHIJKLMNOPQRSTUVWXYZ[\\]^_`abcdefghijklmnopqrstuvwxyz{|}~\";\n");
+
+ return ret.toString();
+ }
+
+ public String createStandardEnd(){
+ StringBuilder ret = new StringBuilder("SKIP\nENDVAR\n");
+ ret.append("\nWHERE\n");
+
+ ret.append("\nFUNCT CHR(num) ==:\n");
+ ret.append("\t@List_To_String(< num >)\n");
+ ret.append("END\n");
+
+ 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("\tFI;\n\tPRINFLUSH(val)\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("\nEND");
+ return ret.toString();
+ }
+
+ 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();
+ }
+
+ private String createEndVar(){
+ return "ENDVAR;";
+ }
+
+ private String createLocal(int i) {
+ // arrays start at 1 in WSL, so we need an offset
+ return "mjvm_locals[" + (i + 1) + "]";
+ }
+
+ private String createStatic(int i) {
+ return "mjvm_statics[" + (i + 1) + "]";
+ }
+
+ private String createArray(int i) {
+ return "mjvm_arrays[" + i + "]";
+ }
+
+ private String createArray(String i) {
+ return "mjvm_arrays[" + i + "]";
+ }
+
+ private String createObject(String i) {
+ return "mjvm_objects[" + i + "]";
+ }
+
+ /**
+ * Creates a WSL comment with care to quote chars.
+ */
+ public static String createComment(String str){
+ return createComment(str, C_REG);
+ }
+
+ /**
+ * Creates a WSL comment with care to quote chars, of the
+ * given type. Types are given as char constants. They can be
+ * default comments, comments that contain the original code
+ * in them, or additional comments regarding the translation
+ * process.
+ */
+ public static String createComment(String str, char type) {
+ return "C:\"" + type + str.replace("\"", "''") + "\";";
+ }
+
+ // generalised stack operations
+
+ private String createToStack(String stack, String var){
+ if (genPopPush)
+ return "PUSH("+stack+"," + var + ");";
+ else
+ return stack + " := <" + var + " > ++ " + stack +";";
+ }
+
+ private String createFromStack(String stack, String var){
+ if (genPopPush)
+ return "POP("+ var + ", "+stack+");";
+ else
+ return var + ":= HEAD("+stack+"); "+stack+" := TAIL("+stack+");";
+ }
+//Expression stack
+
+ private String createToEStack(int i) {
+ return createToEStack(i+"");
+ }
+
+ private String createToEStack(String i) {
+ String res = createToStack("mjvm_estack", i);
+ if (genPrintEStackOnChange)
+ res += "PRINT(\"eStack\",mjvm_estack);";
+ return res;
+ }
+
+ private String createFromEStack(String st) {
+ String res = createFromStack("mjvm_estack",st);
+ if (genPrintEStackOnChange)
+ res += "PRINT(\"eStack\",mjvm_estack);";
+ return res;
+ }
+
+ private String createPopEStack() {
+ String res = "mjvm_estack := TAIL(mjvm_estack);";
+ if (genPrintEStackOnChange)
+ res += "PRINT(\"eStack\",mjvm_estack);";
+ return res;
+ }
+
+ private String createTopTwoEStack() {
+ return createFromEStack("tempa") + "\n" + createFromEStack("tempb");
+ }
+
+ private String createTopEStack() {
+ return createFromEStack("tempa");
+ }
+
+ //Method stack
+
+ private String createToMStack(int i) {
+ return createToMStack(i+"");
+ }
+
+ private String createToMStack(String i) {
+ return createToStack("mjvm_mstack", i);
+ }
+
+ private String createFromMStack(String st) {
+ 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;
+ //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();
+
+ prl(createStandardStart(numberOfWords));
+ prl("SKIP;\n ACTIONS a" + (14 + mainAdr) + " :");
+ int op = get();
+ while (op >= 0) {
+ prl(" a" + counter + " ==");
+ if (originalInComments)
+ prl(createComment(describeOpCode(op), C_OC));
+ if (genPrintForEachAddress) {
+ prl("PRINT(\"a" + counter + "\");");
+ if (genPauseAfterEachAddress)
+ prl("debug_disposable_string := @Read_Line(Standard_Input_Port);");
+ }
+ switch (op) {
+ case load: {
+ prl(createToEStack(createLocal(get())));
+ break;
+ }
+ case load_0:
+ case load_1:
+ case load_2:
+ case load_3: {
+ prl(createStartVar("tempa"));
+ prl("tempa :="+createLocal(op - load_0)+";");
+ prl(createToEStack("tempa"));
+ prl(createEndVar());
+ break;
+ }
+ case store: {
+ prl(createFromEStack(createLocal(get())));
+ break;
+ }
+ case store_0:
+ case store_1:
+ case store_2:
+ case store_3: {
+ prl(createStartVar("tempa"));
+ prl(createFromEStack("tempa"));
+ prl(createLocal(op - store_0)+" := tempa;");
+ prl(createEndVar());
+ break;
+ }
+
+ case getstatic: {
+ prl(createToEStack(createStatic(get2())));
+ break;
+ }
+ case putstatic: {
+ prl(createFromEStack(createStatic(get2())));
+ break;
+ }
+
+ case getfield: {
+ int f = get2();
+ prl(createStartVar("tempa"));
+ prl(createTopEStack());
+ prl(createToEStack(createObject("tempa") + "[" + (f + 1) + "]"));
+ prl(createEndVar());
+ break;
+ }
+ case putfield: {
+ int f = get2();
+ prl(createStartVar("tempa", "tempb"));
+ prl(createTopTwoEStack());
+ prl(createObject("tempb") + "[" + (f + 1) + "]:=tempa;");
+ prl(createEndVar());
+ break;
+ }
+
+ case const_: {
+ prl(createToEStack(get4()));
+ break;
+ }
+
+ case const_m1: {
+ prl(createToEStack(-1));
+ break;
+ }
+
+ case const_0:
+ case const_1:
+ case const_2:
+ case const_3:
+ case const_4:
+ case const_5: {
+ prl(createToEStack(op - const_0));
+ break;
+ }
+
+ case add: {
+ prl(createStartVar("tempa", "tempb", "tempres"));
+ prl(createTopTwoEStack());
+ prl("tempres := tempb + tempa;");
+ prl(createToEStack("tempres"));
+ prl(createEndVar());
+ break;
+ }
+ case sub: {
+ prl(createStartVar("tempa", "tempb", "tempres"));
+ prl(createTopTwoEStack());
+ prl("tempres := tempb - tempa;");
+ prl(createToEStack("tempres"));
+ prl(createEndVar());
+ break;
+ }
+ case mul: {
+ prl(createStartVar("tempa", "tempb", "tempres"));
+ prl(createTopTwoEStack());
+ prl("tempres := tempb * tempa;");
+ prl(createToEStack("tempres"));
+ prl(createEndVar());
+ break;
+ }
+ case div: {
+ prl(createStartVar("tempa", "tempb", "tempres"));
+ prl(createTopTwoEStack());
+ prl("IF tempa = 0 THEN ERROR(\"division by zero\") FI;");
+ prl("tempres := tempb DIV tempa;");
+ prl(createToEStack("tempres"));
+ prl(createEndVar());
+ break;
+ }
+ case rem: {
+ prl(createStartVar("tempa", "tempb", "tempres"));
+ prl(createTopTwoEStack());
+ prl("IF tempa = 0 THEN ERROR(\"division by zero\") FI;");
+ prl("tempres := tempb MOD tempa;");
+ prl(createToEStack("tempres"));
+ prl(createEndVar());
+ break;
+ }
+
+ case neg: {
+ prl(createStartVar("tempa"));
+ prl(createTopEStack());
+ prl(createToEStack("-tempa"));
+ prl(createEndVar());
+ break;
+ }
+
+ case shl: {
+ prl(createStartVar("tempa", "tempb"));
+ prl(createTopTwoEStack());
+ prl("VAR <tempres :=tempb, i:=1 >:");
+ prl("\tFOR i:=1 TO tempa STEP 1 DO tempres := tempres * 2 OD;");
+ prl(createToEStack("tempres"));
+ prl("ENDVAR;");
+ prl(createEndVar());
+ break;
+ }
+ case shr: {
+ prl(createStartVar("tempa", "tempb"));
+ prl(createTopTwoEStack());
+ prl("VAR <tempres :=tempb, i:=1 >:");
+ prl("\tFOR i:=1 TO tempa STEP 1 DO tempres := tempres DIV 2 OD;");
+ prl(createToEStack("tempres"));
+ prl("ENDVAR;");
+ prl(createEndVar());
+ break;
+ }
+
+ case inc: {
+ int b1 = get(), b2 = get();
+ prl(createLocal(b1) + " := " + createLocal(b1) + " + " + b2 + ";");
+ break;
+ }
+
+ case new_: {
+ int size = get2();
+ // TODO maybe objects and arrays should be in the same list?
+ prl("mjvm_objects := mjvm_objects ++ < ARRAY(" + size
+ + ",0) >;");
+ prl(createToEStack("LENGTH(mjvm_objects)"));
+ break;
+ }
+ case newarray: {
+ get();// 0 - bytes, 1 - words; ignore for now
+ // TODO take into consideration 0/1
+ prl(createStartVar("tempa"));
+ prl(createTopEStack());
+ prl("mjvm_arrays := mjvm_arrays ++ < ARRAY(tempa,0) >;");
+ prl(createToEStack("LENGTH(mjvm_arrays)"));
+ prl(createEndVar());
+ break;
+ }
+
+ case aload:
+ case baload: {
+ prl(createStartVar("tempa", "tempb"));
+ prl(createTopTwoEStack());
+ prl(createToEStack(createArray("tempb") + "[tempa+1]"));
+ prl(createEndVar());
+ break;
+ }
+ case astore:
+ case bastore: {
+ prl(createStartVar("tempa", "tempb", "tempres"));
+ prl(createFromEStack("tempres"));
+ prl(createTopTwoEStack());
+ prl("mjvm_arrays[tempb][tempa+1]:=tempres;");
+ prl(createEndVar());
+ break;
+ }
+ case arraylength: {
+ prl(createStartVar("tempa", "tempb"));
+ prl(createTopEStack());
+ prl("tempb := LENGTH("+ createArray("tempa") + ");");
+ prl(createToEStack("tempb"));
+ prl(createEndVar());
+ break;
+ }
+
+ case dup: {
+ prl(createStartVar("tempa", "tempb"));
+ prl(createTopEStack());
+ prl(createToEStack("tempa"));
+ prl(createToEStack("tempa"));
+ prl(createEndVar());
+ break;
+ }
+ case dup2: {
+ prl(createStartVar("tempa", "tempb"));
+ prl(createTopTwoEStack());
+ prl(createToEStack("tempb"));
+ prl(createToEStack("tempa"));
+ prl(createToEStack("tempb"));
+ prl(createToEStack("tempa"));
+ prl(createEndVar());
+ break;
+ }
+
+ case pop: {
+ prl(createPopEStack());
+ break;
+ }
+
+ case jmp: {
+ prl("CALL a" + (counter + get2()) + ";");
+ break;
+ }
+
+ case jeq:
+ case jne:
+ case jlt:
+ case jle:
+ case jgt:
+ case jge: {
+ prl(createStartVar("tempa", "tempb"));
+ prl(createTopTwoEStack());
+ prl("IF tempb " + 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)
+ + " FI;");
+
+ break;
+ }
+
+ case call: {
+ prl("CALL a" + (counter + get2()) + ";");
+ break;
+ }
+
+ case return_: {
+ // we let the actions return
+ // there is nothing to clean up
+ prl("SKIP\n END\n b" + counter + " ==");
+ break;
+ }
+ case enter: {
+ int parameters = get();
+
+ int locals = get();
+ prl(createToMStack("mjvm_locals"));
+ prl("mjvm_locals := ARRAY(" + locals + ",0);");
+ for (int i = parameters - 1; i >= 0; i--)
+ prl(createFromEStack(createLocal(i)));
+ break;
+ }
+ case exit: {
+ prl(createFromMStack("mjvm_locals"));
+ break;
+ }
+
+ // 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));
+ }
+ case read: {
+ prl(createStartVar("tempa"));
+ prl("tempa := @String_To_Num(@Read_Line(Standard_Input_Port));");
+ prl(createToEStack("tempa"));
+ prl(createEndVar());
+ break;
+ }
+
+ // the prints
+ case bprint: {
+ prl(createStartVar("tempa", "tempb"));
+ 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 >));");
+ } else
+ prl("Print_MJ_CHAR(tempb,tempa);");
+ prl(createEndVar());
+ break;
+ }
+ case print: {
+ // TODO printing numbers needs different lengths of spacing
+ prl(createStartVar("tempa", "tempb"));
+
+ prl(createTopTwoEStack());
+ if (genInlinePrint){
+ prl(createComment("print spacing",C_SPEC));
+ prl("PRINFLUSH(SUBSTR(\" \", 0, MIN(10, MAX(0, tempa-SLENGTH(@String(tempb))))), tempb);");
+ }
+ else
+ prl("Print_MJ(tempb,tempa);");
+ prl(createEndVar());
+ break;
+ }
+
+ case trap: {
+ prl("ERROR(\"Runtime error: trap(" + get() + ")\");");
+ break;
+ }
+
+ default:
+ prl(createComment("unknown op error: " + op, C_ERR));
+ messages.message("unknown op error: " + op, TransMessages.M_ERR);
+ break;
+ }
+
+ boolean wasJump = isJumpCode(op);
+ op = get();
+ if (op >= 0)
+ if (wasJump)
+ prl("SKIP\n END");
+ else
+ prl("CALL a" + counter + "\n END");
+ }
+ prl("SKIP\n END\nENDACTIONS;\n");
+ pr(createStandardEnd());
+ }
+
+ public void convertFile(File f) {
+ try {
+ convertStream(new FileInputStream(f));
+ } catch (Exception ex) {
+ ex.printStackTrace();
+ }
+ }
+
+ public void printHelp() {
+ printVersion();
+ printUsage();
+ printHelpOutput();
+ printHelpHelp();
+ }
+
+ public void printLongHelp() {
+ printVersion();
+ printUsage();
+ System.out.println();
+ printHelpOutput();
+ System.out.println();
+ printHelpDirectives();
+ System.out.println();
+ printHelpGenerating();
+ System.out.println();
+ printHelpHelp();
+ }
+
+ public void printHelpOutput() {
+ System.out.println("Output options:");
+ System.out.println(" --screen print output to screen");
+ System.out.println(" -o --oc[+-] include original code in comments");
+ System.out.println(" -v verbose, print warning messages");
+ System.out.println(" -q quiet; don't print even the error messages");
+ System.out.println(" -d print detailed debug messages");
+ }
+
+ public void printHelpGenerating() {
+ System.out.println("Options for generating extra code for tracking code execution");
+ System.out.println(" --genEStackPrint generate print for all EStack changes");
+ System.out.println(" --genAddrPrint generate prints after every address of the original code ");
+ System.out.println(" --genAddrPause generate a pause after every address of the original code ");
+ System.out.println(" --genAddr short for --genAddrPrint and --genAddrPause");
+ System.out.println(" --genAll short for applying all code generation");
+ }
+
+ 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();
+ System.out.println(" --genInlinePrint generate prints directly instead of procedure calls");
+ System.out.println(" --genProcedurePrint generate prints as custom procedure calls");
+ }
+
+ public void printHelpHelp() {
+ System.out.println("Help and info options");
+ System.out.println(" -h basic help");
+ System.out.println(" --help print more detailed help");
+ System.out.println(" --version or -version print version and exit");
+ }
+
+ public void printUsage(){
+ System.out.println("usage:\n\t mjc2wsl {options} filename [outfile]");
+ }
+
+ public void printVersion() {
+ System.out.println("MicroJava bytecode to WSL converter. v " + getVersion()
+ + ", by Doni Pracner");
+ }
+
+ public String makeDefaultOutName(String inname){
+ String rez = inname;
+ if (inname.endsWith(".obj"))
+ rez = rez.substring(0, rez.length() - 4);
+ return rez + ".wsl";
+ }
+
+ public void run(String[] args) {
+ if (args.length == 0) {
+ printHelp();
+ } else {
+ int i = 0;
+ while (i < args.length && args[i].charAt(0) == '-') {
+ if (args[i].compareTo("-h") == 0) {
+ printHelp();
+ return;
+ } else if (args[i].compareTo("--help") == 0) {
+ printLongHelp();
+ return;
+ } else if (args[i].compareTo("--version") == 0
+ || args[i].compareTo("-version") == 0) {
+ printVersion();
+ return;
+ } else if (args[i].compareTo("-o") == 0
+ || args[i].startsWith("--oc")) {
+ if (args[i].length() == 2)
+ originalInComments = true;
+ else if (args[i].length() == 5)
+ originalInComments = args[i].charAt(4) == '+';
+ else
+ originalInComments = true;
+ } else if (args[i].compareTo("--screen") == 0) {
+ out = new PrintWriter(System.out);
+ } else if (args[i].compareTo("-d") == 0) {
+ messages.setPrintLevel(TransMessages.M_DEB);// print debug info
+ } else if (args[i].compareTo("-v") == 0) {
+ messages.setPrintLevel(TransMessages.M_WAR);// print warnings
+ } else if (args[i].compareTo("-q") == 0) {
+ messages.setPrintLevel(TransMessages.M_QUIET);// no printing
+ } else if (args[i].compareToIgnoreCase("--genEStackPrint") == 0) {
+ genPrintEStackOnChange = true;
+ } else if (args[i].compareToIgnoreCase("--genAddrPause") == 0) {
+ genPauseAfterEachAddress = true;
+ } else if (args[i].compareToIgnoreCase("--genAddrPrint") == 0) {
+ genPrintForEachAddress = true;
+ } else if (args[i].compareToIgnoreCase("--genAddr") == 0) {
+ genPrintForEachAddress = true;
+ genPauseAfterEachAddress = true;
+ } else if (args[i].compareToIgnoreCase("--genAll") == 0) {
+ genPrintEStackOnChange = true;
+ genPrintForEachAddress = true;
+ genPauseAfterEachAddress = true;
+ } else if (args[i].compareToIgnoreCase("--genPopPush") == 0) {
+ genPopPush = true;
+ } else if (args[i].compareToIgnoreCase("--genInlinePrint") == 0) {
+ genInlinePrint = true;
+ } else if (args[i].compareToIgnoreCase("--genHeadTail") == 0) {
+ genPopPush = false;
+ } else if (args[i].compareToIgnoreCase("--genProcedurePrint") == 0) {
+ genInlinePrint = false;
+ }
+ i++;
+ }
+
+ if (i >= args.length) {
+ System.out.println("no filename supplied");
+ System.exit(2);
+ }
+ File f = new File(args[i]);
+
+ if (i + 1 < args.length) {
+ try {
+ out = new PrintWriter(args[i + 1]);
+ } catch (Exception e) {
+ System.err.println("error in opening out file:");
+ e.printStackTrace();
+ }
+ }
+ if (out == null) {
+ // if not set to screen, or a file, make a default filename
+ try {
+ out = new PrintWriter(makeDefaultOutName(args[i]));
+ } catch (Exception e) {
+ System.err.println("error in opening out file:");
+ e.printStackTrace();
+ }
+ }
+ if (f.exists()) {
+ Calendar now = Calendar.getInstance();
+ convertFile(f);
+ long mili = Calendar.getInstance().getTimeInMillis()
+ - now.getTimeInMillis();
+ System.out.println("conversion time:" + mili + " ms");
+ messages.printMessageCounters();
+ out.close();
+ } else
+ System.out.println("file does not exist");
+ }
+ }
+
+ public static void main(String[] args) {
+ new mjc2wsl().run(args);
+ }
+}
\ No newline at end of file
diff --git a/src/mjc2wsl.java b/src/mjc2wsl.java
--- a/src/mjc2wsl.java
+++ /dev/null
@@ -1,936 +0,0 @@
-/*
- Copyright (C) 2014 Doni Pracner
-
- This file is part of mjc2wsl.
-
- mjc2wsl is free software: you can redistribute it and/or modify
- it under the terms of the GNU General Public License as published by
- the Free Software Foundation, either version 3 of the License, or
- (at your option) any later version.
-
- mjc2wsl is distributed in the hope that it will be useful,
- but WITHOUT ANY WARRANTY; without even the implied warranty of
- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- GNU General Public License for more details.
-
- You should have received a copy of the GNU General Public License
- along with mjc2wsl. If not, see <http://www.gnu.org/licenses/>.
-*/
-import java.io.*;
-import java.util.*;
-
-/**
- * This program converts file from compiled MicroJava bytecode to WSL language
- * which is a part of the FermaT Transformation system. MicroJava is a subset
- * used in Compiler Construction courses by Hanspeter Moessenboeck, not
- * "Java ME".
- *
- * @author Doni Pracner, http://perun.dmi.rs/pracner http://quemaster.com
- */
-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 TransMessages messages = new TransMessages();
-
- private boolean genPauseAfterEachAddress=false,
- genPrintForEachAddress = false,
- genPrintEStackOnChange = false;
-
- private boolean genPopPush=false;
-
- private boolean genInlinePrint=false;
-
- /** Constant used for marking a regular comment from the original file */
- public static final char C_REG = ' ';
- /**
- * Constant used for marking when original code is inserted in the file,
- * next to the translations
- */
- public static final char C_OC = '#';
- /** Constant used for marking special messages from the translator */
- public static final char C_SPEC = '&';
- /** Constant used for marking error messages from the translator */
- public static final char C_ERR = '!';
-
- /** instruction code in MicroJava bytecode. */
- public static final int
- load = 1,
- load_0 = 2,
- load_1 = 3,
- load_2 = 4,
- load_3 = 5,
- store = 6,
- store_0 = 7,
- store_1 = 8,
- store_2 = 9,
- store_3 = 10,
- getstatic = 11,
- putstatic = 12,
- getfield = 13,
- putfield = 14,
- const_0 = 15,
- const_1 = 16,
- const_2 = 17,
- const_3 = 18,
- const_4 = 19,
- const_5 = 20,
- const_m1 = 21,
- const_ = 22,
- add = 23,
- sub = 24,
- mul = 25,
- div = 26,
- rem = 27,
- neg = 28,
- shl = 29,
- shr = 30,
- inc = 31,
- new_ = 32,
- newarray = 33,
- aload = 34,
- astore = 35,
- baload = 36,
- bastore = 37,
- arraylength = 38,
- pop = 39,
- dup = 40,
- dup2 = 41,
- jmp = 42,
- jeq = 43,
- jne = 44,
- jlt = 45,
- jle = 46,
- jgt = 47,
- jge = 48,
- call = 49,
- return_ = 50,
- enter = 51,
- exit = 52,
- read = 53,
- print = 54,
- bread = 55,
- bprint = 56,
- trap = 57;
-
- 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() {
- if (versionData == null) {
- versionData = new Properties();
- try {
- versionData.load(getClass().getResourceAsStream(versionFile));
- } catch (IOException e) {
- e.printStackTrace();
- }
- }
- String ver = versionData.getProperty("version");
- if (ver != null)
- return ver;
- else
- return versionN;
- }
-
- public String getOpString(int op) {
- return getOpMap().get(op);
- }
-
- 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);
- }
-
- private void pr(char i){
- out.print(i);
- }
-
- private void pr(String i){
- out.print(i);
- }
-
- private void prl(String 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);
- }
-
- public String createStandardStart(int numWords){
- StringBuilder ret = new StringBuilder(
- "C:\" This file automatically converted from microjava bytecode\";\n"
- +"C:\" with mjc2wsl v "+getVersion()+"\";\n");
-
- ret.append("\nBEGIN");
- ret.append("\nVAR <\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_flag_jump := 0,");
- ret.append("\n\tmjvm_objects := < >,");
- ret.append("\n\tmjvm_estack := < >, mjvm_mstack := < > > :");
-
- return ret.toString();
- }
-
- public String createAsciiString(){
- StringBuilder ret = new StringBuilder("C:\"char array for ascii code conversions\";");
- ret.append("\nascii := \"????????????????????????????????\"++\n");
- ret.append("\" !\"++Quote++\"#$%&'()*+,-./0123456789:;<=>?@ABCDEFGHIJKLMNOPQRSTUVWXYZ[\\]^_`abcdefghijklmnopqrstuvwxyz{|}~\";\n");
-
- return ret.toString();
- }
-
- public String createStandardEnd(){
- StringBuilder ret = new StringBuilder("SKIP\nENDVAR\n");
- ret.append("\nWHERE\n");
-
- ret.append("\nFUNCT CHR(num) ==:\n");
- ret.append("\t@List_To_String(< num >)\n");
- ret.append("END\n");
-
- 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("\tFI;\n\tPRINFLUSH(val)\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("\nEND");
- return ret.toString();
- }
-
- 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();
- }
-
- private String createEndVar(){
- return "ENDVAR;";
- }
-
- private String createLocal(int i) {
- // arrays start at 1 in WSL, so we need an offset
- return "mjvm_locals[" + (i + 1) + "]";
- }
-
- private String createStatic(int i) {
- return "mjvm_statics[" + (i + 1) + "]";
- }
-
- private String createArray(int i) {
- return "mjvm_arrays[" + i + "]";
- }
-
- private String createArray(String i) {
- return "mjvm_arrays[" + i + "]";
- }
-
- private String createObject(String i) {
- return "mjvm_objects[" + i + "]";
- }
-
- /**
- * Creates a WSL comment with care to quote chars.
- */
- public static String createComment(String str){
- return createComment(str, C_REG);
- }
-
- /**
- * Creates a WSL comment with care to quote chars, of the
- * given type. Types are given as char constants. They can be
- * default comments, comments that contain the original code
- * in them, or additional comments regarding the translation
- * process.
- */
- public static String createComment(String str, char type) {
- return "C:\"" + type + str.replace("\"", "''") + "\";";
- }
-
- // generalised stack operations
-
- private String createToStack(String stack, String var){
- if (genPopPush)
- return "PUSH("+stack+"," + var + ");";
- else
- return stack + " := <" + var + " > ++ " + stack +";";
- }
-
- private String createFromStack(String stack, String var){
- if (genPopPush)
- return "POP("+ var + ", "+stack+");";
- else
- return var + ":= HEAD("+stack+"); "+stack+" := TAIL("+stack+");";
- }
-//Expression stack
-
- private String createToEStack(int i) {
- return createToEStack(i+"");
- }
-
- private String createToEStack(String i) {
- String res = createToStack("mjvm_estack", i);
- if (genPrintEStackOnChange)
- res += "PRINT(\"eStack\",mjvm_estack);";
- return res;
- }
-
- private String createFromEStack(String st) {
- String res = createFromStack("mjvm_estack",st);
- if (genPrintEStackOnChange)
- res += "PRINT(\"eStack\",mjvm_estack);";
- return res;
- }
-
- private String createPopEStack() {
- String res = "mjvm_estack := TAIL(mjvm_estack);";
- if (genPrintEStackOnChange)
- res += "PRINT(\"eStack\",mjvm_estack);";
- return res;
- }
-
- private String createTopTwoEStack() {
- return createFromEStack("tempa") + "\n" + createFromEStack("tempb");
- }
-
- private String createTopEStack() {
- return createFromEStack("tempa");
- }
-
- //Method stack
-
- private String createToMStack(int i) {
- return createToMStack(i+"");
- }
-
- private String createToMStack(String i) {
- return createToStack("mjvm_mstack", i);
- }
-
- private String createFromMStack(String st) {
- 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;
- //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();
-
- prl(createStandardStart(numberOfWords));
- prl("SKIP;\n ACTIONS a" + (14 + mainAdr) + " :");
- int op = get();
- while (op >= 0) {
- prl(" a" + counter + " ==");
- if (originalInComments)
- prl(createComment(describeOpCode(op), C_OC));
- if (genPrintForEachAddress) {
- prl("PRINT(\"a" + counter + "\");");
- if (genPauseAfterEachAddress)
- prl("debug_disposable_string := @Read_Line(Standard_Input_Port);");
- }
- switch (op) {
- case load: {
- prl(createToEStack(createLocal(get())));
- break;
- }
- case load_0:
- case load_1:
- case load_2:
- case load_3: {
- prl(createStartVar("tempa"));
- prl("tempa :="+createLocal(op - load_0)+";");
- prl(createToEStack("tempa"));
- prl(createEndVar());
- break;
- }
- case store: {
- prl(createFromEStack(createLocal(get())));
- break;
- }
- case store_0:
- case store_1:
- case store_2:
- case store_3: {
- prl(createStartVar("tempa"));
- prl(createFromEStack("tempa"));
- prl(createLocal(op - store_0)+" := tempa;");
- prl(createEndVar());
- break;
- }
-
- case getstatic: {
- prl(createToEStack(createStatic(get2())));
- break;
- }
- case putstatic: {
- prl(createFromEStack(createStatic(get2())));
- break;
- }
-
- case getfield: {
- int f = get2();
- prl(createStartVar("tempa"));
- prl(createTopEStack());
- prl(createToEStack(createObject("tempa") + "[" + (f + 1) + "]"));
- prl(createEndVar());
- break;
- }
- case putfield: {
- int f = get2();
- prl(createStartVar("tempa", "tempb"));
- prl(createTopTwoEStack());
- prl(createObject("tempb") + "[" + (f + 1) + "]:=tempa;");
- prl(createEndVar());
- break;
- }
-
- case const_: {
- prl(createToEStack(get4()));
- break;
- }
-
- case const_m1: {
- prl(createToEStack(-1));
- break;
- }
-
- case const_0:
- case const_1:
- case const_2:
- case const_3:
- case const_4:
- case const_5: {
- prl(createToEStack(op - const_0));
- break;
- }
-
- case add: {
- prl(createStartVar("tempa", "tempb", "tempres"));
- prl(createTopTwoEStack());
- prl("tempres := tempb + tempa;");
- prl(createToEStack("tempres"));
- prl(createEndVar());
- break;
- }
- case sub: {
- prl(createStartVar("tempa", "tempb", "tempres"));
- prl(createTopTwoEStack());
- prl("tempres := tempb - tempa;");
- prl(createToEStack("tempres"));
- prl(createEndVar());
- break;
- }
- case mul: {
- prl(createStartVar("tempa", "tempb", "tempres"));
- prl(createTopTwoEStack());
- prl("tempres := tempb * tempa;");
- prl(createToEStack("tempres"));
- prl(createEndVar());
- break;
- }
- case div: {
- prl(createStartVar("tempa", "tempb", "tempres"));
- prl(createTopTwoEStack());
- prl("IF tempa = 0 THEN ERROR(\"division by zero\") FI;");
- prl("tempres := tempb DIV tempa;");
- prl(createToEStack("tempres"));
- prl(createEndVar());
- break;
- }
- case rem: {
- prl(createStartVar("tempa", "tempb", "tempres"));
- prl(createTopTwoEStack());
- prl("IF tempa = 0 THEN ERROR(\"division by zero\") FI;");
- prl("tempres := tempb MOD tempa;");
- prl(createToEStack("tempres"));
- prl(createEndVar());
- break;
- }
-
- case neg: {
- prl(createStartVar("tempa"));
- prl(createTopEStack());
- prl(createToEStack("-tempa"));
- prl(createEndVar());
- break;
- }
-
- case shl: {
- prl(createStartVar("tempa", "tempb"));
- prl(createTopTwoEStack());
- prl("VAR <tempres :=tempb, i:=1 >:");
- prl("\tFOR i:=1 TO tempa STEP 1 DO tempres := tempres * 2 OD;");
- prl(createToEStack("tempres"));
- prl("ENDVAR;");
- prl(createEndVar());
- break;
- }
- case shr: {
- prl(createStartVar("tempa", "tempb"));
- prl(createTopTwoEStack());
- prl("VAR <tempres :=tempb, i:=1 >:");
- prl("\tFOR i:=1 TO tempa STEP 1 DO tempres := tempres DIV 2 OD;");
- prl(createToEStack("tempres"));
- prl("ENDVAR;");
- prl(createEndVar());
- break;
- }
-
- case inc: {
- int b1 = get(), b2 = get();
- prl(createLocal(b1) + " := " + createLocal(b1) + " + " + b2 + ";");
- break;
- }
-
- case new_: {
- int size = get2();
- // TODO maybe objects and arrays should be in the same list?
- prl("mjvm_objects := mjvm_objects ++ < ARRAY(" + size
- + ",0) >;");
- prl(createToEStack("LENGTH(mjvm_objects)"));
- break;
- }
- case newarray: {
- get();// 0 - bytes, 1 - words; ignore for now
- // TODO take into consideration 0/1
- prl(createStartVar("tempa"));
- prl(createTopEStack());
- prl("mjvm_arrays := mjvm_arrays ++ < ARRAY(tempa,0) >;");
- prl(createToEStack("LENGTH(mjvm_arrays)"));
- prl(createEndVar());
- break;
- }
-
- case aload:
- case baload: {
- prl(createStartVar("tempa", "tempb"));
- prl(createTopTwoEStack());
- prl(createToEStack(createArray("tempb") + "[tempa+1]"));
- prl(createEndVar());
- break;
- }
- case astore:
- case bastore: {
- prl(createStartVar("tempa", "tempb", "tempres"));
- prl(createFromEStack("tempres"));
- prl(createTopTwoEStack());
- prl("mjvm_arrays[tempb][tempa+1]:=tempres;");
- prl(createEndVar());
- break;
- }
- case arraylength: {
- prl(createStartVar("tempa", "tempb"));
- prl(createTopEStack());
- prl("tempb := LENGTH("+ createArray("tempa") + ");");
- prl(createToEStack("tempb"));
- prl(createEndVar());
- break;
- }
-
- case dup: {
- prl(createStartVar("tempa", "tempb"));
- prl(createTopEStack());
- prl(createToEStack("tempa"));
- prl(createToEStack("tempa"));
- prl(createEndVar());
- break;
- }
- case dup2: {
- prl(createStartVar("tempa", "tempb"));
- prl(createTopTwoEStack());
- prl(createToEStack("tempb"));
- prl(createToEStack("tempa"));
- prl(createToEStack("tempb"));
- prl(createToEStack("tempa"));
- prl(createEndVar());
- break;
- }
-
- case pop: {
- prl(createPopEStack());
- break;
- }
-
- case jmp: {
- prl("CALL a" + (counter + get2()) + ";");
- break;
- }
-
- case jeq:
- case jne:
- case jlt:
- case jle:
- case jgt:
- case jge: {
- prl(createStartVar("tempa", "tempb"));
- prl(createTopTwoEStack());
- prl("IF tempb " + 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)
- + " FI;");
-
- break;
- }
-
- case call: {
- prl("CALL a" + (counter + get2()) + ";");
- break;
- }
-
- case return_: {
- // we let the actions return
- // there is nothing to clean up
- prl("SKIP\n END\n b" + counter + " ==");
- break;
- }
- case enter: {
- int parameters = get();
-
- int locals = get();
- prl(createToMStack("mjvm_locals"));
- prl("mjvm_locals := ARRAY(" + locals + ",0);");
- for (int i = parameters - 1; i >= 0; i--)
- prl(createFromEStack(createLocal(i)));
- break;
- }
- case exit: {
- prl(createFromMStack("mjvm_locals"));
- break;
- }
-
- // 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));
- }
- case read: {
- prl(createStartVar("tempa"));
- prl("tempa := @String_To_Num(@Read_Line(Standard_Input_Port));");
- prl(createToEStack("tempa"));
- prl(createEndVar());
- break;
- }
-
- // the prints
- case bprint: {
- prl(createStartVar("tempa", "tempb"));
- 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 >));");
- } else
- prl("Print_MJ_CHAR(tempb,tempa);");
- prl(createEndVar());
- break;
- }
- case print: {
- // TODO printing numbers needs different lengths of spacing
- prl(createStartVar("tempa", "tempb"));
-
- prl(createTopTwoEStack());
- if (genInlinePrint){
- prl(createComment("print spacing",C_SPEC));
- prl("PRINFLUSH(SUBSTR(\" \", 0, MIN(10, MAX(0, tempa-SLENGTH(@String(tempb))))), tempb);");
- }
- else
- prl("Print_MJ(tempb,tempa);");
- prl(createEndVar());
- break;
- }
-
- case trap: {
- prl("ERROR(\"Runtime error: trap(" + get() + ")\");");
- break;
- }
-
- default:
- prl(createComment("unknown op error: " + op, C_ERR));
- messages.message("unknown op error: " + op, TransMessages.M_ERR);
- break;
- }
-
- boolean wasJump = isJumpCode(op);
- op = get();
- if (op >= 0)
- if (wasJump)
- prl("SKIP\n END");
- else
- prl("CALL a" + counter + "\n END");
- }
- prl("SKIP\n END\nENDACTIONS;\n");
- pr(createStandardEnd());
- }
-
- public void convertFile(File f) {
- try {
- convertStream(new FileInputStream(f));
- } catch (Exception ex) {
- ex.printStackTrace();
- }
- }
-
- public void printHelp() {
- printVersion();
- printUsage();
- printHelpOutput();
- printHelpHelp();
- }
-
- public void printLongHelp() {
- printVersion();
- printUsage();
- System.out.println();
- printHelpOutput();
- System.out.println();
- printHelpDirectives();
- System.out.println();
- printHelpGenerating();
- System.out.println();
- printHelpHelp();
- }
-
- public void printHelpOutput() {
- System.out.println("Output options:");
- System.out.println(" --screen print output to screen");
- System.out.println(" -o --oc[+-] include original code in comments");
- System.out.println(" -v verbose, print warning messages");
- System.out.println(" -q quiet; don't print even the error messages");
- System.out.println(" -d print detailed debug messages");
- }
-
- public void printHelpGenerating() {
- System.out.println("Options for generating extra code for tracking code execution");
- System.out.println(" --genEStackPrint generate print for all EStack changes");
- System.out.println(" --genAddrPrint generate prints after every address of the original code ");
- System.out.println(" --genAddrPause generate a pause after every address of the original code ");
- System.out.println(" --genAddr short for --genAddrPrint and --genAddrPause");
- System.out.println(" --genAll short for applying all code generation");
- }
-
- 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();
- System.out.println(" --genInlinePrint generate prints directly instead of procedure calls");
- System.out.println(" --genProcedurePrint generate prints as custom procedure calls");
- }
-
- public void printHelpHelp() {
- System.out.println("Help and info options");
- System.out.println(" -h basic help");
- System.out.println(" --help print more detailed help");
- System.out.println(" --version or -version print version and exit");
- }
-
- public void printUsage(){
- System.out.println("usage:\n\t mjc2wsl {options} filename [outfile]");
- }
-
- public void printVersion() {
- System.out.println("MicroJava bytecode to WSL converter. v " + getVersion()
- + ", by Doni Pracner");
- }
-
- public String makeDefaultOutName(String inname){
- String rez = inname;
- if (inname.endsWith(".obj"))
- rez = rez.substring(0, rez.length() - 4);
- return rez + ".wsl";
- }
-
- public void run(String[] args) {
- if (args.length == 0) {
- printHelp();
- } else {
- int i = 0;
- while (i < args.length && args[i].charAt(0) == '-') {
- if (args[i].compareTo("-h") == 0) {
- printHelp();
- return;
- } else if (args[i].compareTo("--help") == 0) {
- printLongHelp();
- return;
- } else if (args[i].compareTo("--version") == 0
- || args[i].compareTo("-version") == 0) {
- printVersion();
- return;
- } else if (args[i].compareTo("-o") == 0
- || args[i].startsWith("--oc")) {
- if (args[i].length() == 2)
- originalInComments = true;
- else if (args[i].length() == 5)
- originalInComments = args[i].charAt(4) == '+';
- else
- originalInComments = true;
- } else if (args[i].compareTo("--screen") == 0) {
- out = new PrintWriter(System.out);
- } else if (args[i].compareTo("-d") == 0) {
- messages.setPrintLevel(TransMessages.M_DEB);// print debug info
- } else if (args[i].compareTo("-v") == 0) {
- messages.setPrintLevel(TransMessages.M_WAR);// print warnings
- } else if (args[i].compareTo("-q") == 0) {
- messages.setPrintLevel(TransMessages.M_QUIET);// no printing
- } else if (args[i].compareToIgnoreCase("--genEStackPrint") == 0) {
- genPrintEStackOnChange = true;
- } else if (args[i].compareToIgnoreCase("--genAddrPause") == 0) {
- genPauseAfterEachAddress = true;
- } else if (args[i].compareToIgnoreCase("--genAddrPrint") == 0) {
- genPrintForEachAddress = true;
- } else if (args[i].compareToIgnoreCase("--genAddr") == 0) {
- genPrintForEachAddress = true;
- genPauseAfterEachAddress = true;
- } else if (args[i].compareToIgnoreCase("--genAll") == 0) {
- genPrintEStackOnChange = true;
- genPrintForEachAddress = true;
- genPauseAfterEachAddress = true;
- } else if (args[i].compareToIgnoreCase("--genPopPush") == 0) {
- genPopPush = true;
- } else if (args[i].compareToIgnoreCase("--genInlinePrint") == 0) {
- genInlinePrint = true;
- } else if (args[i].compareToIgnoreCase("--genHeadTail") == 0) {
- genPopPush = false;
- } else if (args[i].compareToIgnoreCase("--genProcedurePrint") == 0) {
- genInlinePrint = false;
- }
- i++;
- }
-
- if (i >= args.length) {
- System.out.println("no filename supplied");
- System.exit(2);
- }
- File f = new File(args[i]);
-
- if (i + 1 < args.length) {
- try {
- out = new PrintWriter(args[i + 1]);
- } catch (Exception e) {
- System.err.println("error in opening out file:");
- e.printStackTrace();
- }
- }
- if (out == null) {
- // if not set to screen, or a file, make a default filename
- try {
- out = new PrintWriter(makeDefaultOutName(args[i]));
- } catch (Exception e) {
- System.err.println("error in opening out file:");
- e.printStackTrace();
- }
- }
- if (f.exists()) {
- Calendar now = Calendar.getInstance();
- convertFile(f);
- long mili = Calendar.getInstance().getTimeInMillis()
- - now.getTimeInMillis();
- System.out.println("conversion time:" + mili + " ms");
- messages.printMessageCounters();
- out.close();
- } else
- System.out.println("file does not exist");
- }
- }
-
- public static void main(String[] args) {
- new mjc2wsl().run(args);
- }
-}
\ No newline at end of file