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| author | Doni Pracner <quinnuendo@gmail.com> | |
| Tue, 17 Jul 2018 23:14:36 +0000 (01:14 +0200) | ||
| committer | Doni Pracner <quinnuendo@gmail.com> | |
| Tue, 17 Jul 2018 23:14:36 +0000 (01:14 +0200) |
| build.xml | patch | blob | history | |
| src/com/quemaster/transformations/mjc2wsl/MicroJavaInput.java | patch | blob | history | |
| src/com/quemaster/transformations/mjc2wsl/Mjc2wsl.java | [new file with mode: 0644] | patch | blob |
| src/com/quemaster/transformations/mjc2wsl/mjc2wsl.java | [deleted file] | patch | blob | history |
diff --git a/build.xml b/build.xml
index f7855572d025f93ca6c1893bb4f63855797b970d..6f2572b71781c0f6a6eab1d9be55cc2c05447611 100644 (file)
--- a/build.xml
+++ b/build.xml
<property name="mjc2wsl.class.dir" value="bin" />
<property name="mjc2wsl.src.dir" value="src" />
<property name="mjc2wsl.options" value="" />
+ <property name="mjc2wsl.main" value="com.quemaster.transformations.mjc2wsl.Mjc2wsl" />
<property name="res.dir" value="res" />
<property name="dist.dir" value="dist" />
<attribute name="Implementation-Title"
value="MicroJava bytecode to WSL"/>
<attribute name="Implementation-Version" value="${version}"/>
- <attribute name="Main-Class" value="com.quemaster.transformations.mjc2wsl.mjc2wsl"/>
+ <attribute name="Main-Class" value="${mjc2wsl.main}"/>
</manifest>
<fileset dir="${mjc2wsl.class.dir}"/>
</jar>
<target name="mjc2wsl">
<echo message="${filename}" />
- <java classpath="${mjc2wsl.class.dir}:${res.dir}" classname="com.quemaster.transformations.mjc2wsl.mjc2wsl">
+ <java classpath="${mjc2wsl.class.dir}:${res.dir}" classname="${mjc2wsl.main}">
<arg line="${mjc2wsl.options}" />
<arg value="${filename}" />
</java>
diff --git a/src/com/quemaster/transformations/mjc2wsl/MicroJavaInput.java b/src/com/quemaster/transformations/mjc2wsl/MicroJavaInput.java
index 3dd6157bad20e90693c44a6941816ad31c760d55..499659a3c313cae3d16ed5e6453de60d9ff90413 100644 (file)
String getRelationFor(int opcode) throws Exception {
switch (opcode) {
- case mjc2wsl.jeq:
+ case Mjc2wsl.jeq:
return "=";
- case mjc2wsl.jne:
+ case Mjc2wsl.jne:
return "<>";
- case mjc2wsl.jlt:
+ case Mjc2wsl.jlt:
return "<";
- case mjc2wsl.jle:
+ case Mjc2wsl.jle:
return "<=";
- case mjc2wsl.jgt:
+ case Mjc2wsl.jgt:
return ">";
- case mjc2wsl.jge:
+ case Mjc2wsl.jge:
return ">=";
}
throw new Exception("Wrong opcode for a relation");
}
boolean isJumpCode(int opcode) {
- return (opcode >= mjc2wsl.jmp) && (opcode <= mjc2wsl.jge);
+ return (opcode >= Mjc2wsl.jmp) && (opcode <= Mjc2wsl.jge);
}
private HashMap<Integer, String> getOpMap() {
diff --git a/src/com/quemaster/transformations/mjc2wsl/Mjc2wsl.java b/src/com/quemaster/transformations/mjc2wsl/Mjc2wsl.java
--- /dev/null
@@ -0,0 +1,958 @@
+package com.quemaster.transformations.mjc2wsl;
+/*
+ Copyright (C) 2014,2015, 2016, 2018 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.File;
+import java.io.FileInputStream;
+import java.io.IOException;
+import java.io.InputStream;
+import java.io.PrintWriter;
+import java.nio.file.FileSystems;
+import java.nio.file.Files;
+import java.nio.file.Path;
+import java.util.Calendar;
+import java.util.Properties;
+
+import com.quemaster.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 = "v0.2.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;
+
+ private boolean genLocalVars = true;
+
+ // make an array for all local variables OTHERWISE make them separate
+ private boolean genLocalsAsArray = true;
+
+ /** 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 Properties versionData;
+
+ private String getVersion() {
+ if (versionData == null) {
+ versionData = new Properties();
+ try {
+ versionData.load(getClass().getResourceAsStream(versionFile));
+ } catch (IOException | NullPointerException e) {
+ // it doesn't matter
+ //e.printStackTrace();
+ }
+ }
+ String ver = versionData.getProperty("version");
+ if (ver != null)
+ return ver;
+ else
+ return versionN;
+ }
+
+ private MicroJavaInput mjInput;
+
+ private PrintWriter out = null;
+
+
+ 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);
+ }
+
+ public String createStandardStart(){
+ return createStandardStart(10);
+ }
+
+ public String createStandardStart(int numWords){
+ StringBuilder ret = new StringBuilder(
+ "C:\" This file was automatically converted from microjava bytecode\n"
+ +" using mjc2wsl "+getVersion()+"\n");
+
+ ret.append(" -options:");
+ ret.append("\n localsAsArrays:"+genLocalsAsArray);
+ ret.append("\n localVarBlocks:"+genLocalVars);
+ ret.append("\n popPush:"+genPopPush);
+ ret.append("\n inlinePrint:"+genInlinePrint);
+ ret.append("\n\";\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,");
+
+ if (genLocalsAsArray)
+ ret.append("mjvm_locals := ARRAY(1,0),");
+
+ ret.append("\n\tmjvm_statics := ARRAY("+numWords+",0),");
+ ret.append("\n\tmjvm_arrays := < >,");
+ 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("PRINFLUSH(@Format(format, val ))");
+ ret.append("\nEND\n");
+
+ ret.append("\nPROC Print_MJ_CHAR(val, format VAR)==\n");
+ ret.append("PRINFLUSH(@Format(format, CHR(val)))");
+ ret.append("\nEND\n");
+ }
+
+ ret.append("\nEND");
+ return ret.toString();
+ }
+
+ private String createStartVar(String... vars){
+ 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(){
+ if (genLocalVars)
+ return "ENDVAR;";
+ else
+ return "";
+ }
+
+ private String createLocal(int i) {
+ // arrays start at 1 in WSL, so we need an offset
+ if (genLocalsAsArray)
+ return "mjvm_locals[" + (i + 1) + "]";
+ else
+ return "mjvm_locals_" + i;
+ }
+
+ 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);
+ }
+
+ public void convertStream(InputStream ins) throws Exception{
+ mjInput = new MicroJavaInput(ins);
+
+ prl(createStandardStart(mjInput.getNumberOfWords()));
+ prl("SKIP;\n ACTIONS a" + (14 + mjInput.getMainAdr()) + " :");
+
+ // the number of Locals for procedures; need to remember it for exits
+ int numberOfLocals = 0;
+
+ int op = mjInput.get();
+ while (op >= 0) {
+ prl(" a" + mjInput.getCounter() + " ==");
+ if (originalInComments)
+ prl(createComment(mjInput.describeOpCode(op), C_OC));
+ if (genPrintForEachAddress) {
+ prl("PRINT(\"a" + mjInput.getCounter() + "\");");
+ if (genPauseAfterEachAddress)
+ prl("@Read_Line_Proc(VAR debug_disposable_string, Standard_Input_Port);");
+ }
+ switch (op) {
+ case load: {
+ prl(createToEStack(createLocal(mjInput.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(mjInput.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(mjInput.get2())));
+ break;
+ }
+ case putstatic: {
+ prl(createFromEStack(createStatic(mjInput.get2())));
+ break;
+ }
+
+ case getfield: {
+ int f = mjInput.get2();
+ prl(createStartVar("tempa"));
+ prl(createTopEStack());
+ prl(createToEStack(createObject("tempa") + "[" + (f + 1) + "]"));
+ prl(createEndVar());
+ break;
+ }
+ case putfield: {
+ int f = mjInput.get2();
+ prl(createStartVar("tempa", "tempb"));
+ prl(createTopTwoEStack());
+ prl(createObject("tempb") + "[" + (f + 1) + "]:=tempa;");
+ prl(createEndVar());
+ break;
+ }
+
+ case const_: {
+ prl(createToEStack(mjInput.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 = mjInput.get(), b2 = mjInput.get();
+ prl(createLocal(b1) + " := " + createLocal(b1) + " + " + b2 + ";");
+ break;
+ }
+
+ case new_: {
+ int size = mjInput.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: {
+ mjInput.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" + (mjInput.getCounter() + mjInput.get2()) + ";");
+ break;
+ }
+
+ case jeq:
+ case jne:
+ case jlt:
+ case jle:
+ case jgt:
+ case jge: {
+ 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;
+ }
+
+ case call: {
+ 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" + mjInput.getCounter() + " ==");
+ break;
+ }
+ case enter: {
+ int parameters = mjInput.get();
+
+ numberOfLocals = mjInput.get();
+ if (genLocalsAsArray) {
+ prl(createToMStack("mjvm_locals"));
+ prl("mjvm_locals := ARRAY(" + numberOfLocals + ",0);");
+ } else {
+ // TODO maybe we should generate VAR block for these somewhere
+ for (int i = 0; i < numberOfLocals; i++) {
+ prl(createToMStack(createLocal(i)));
+ }
+ }
+
+ for (int i = parameters - 1; i >= 0; i--)
+ prl(createFromEStack(createLocal(i)));
+ break;
+ }
+ case exit: {
+ if (genLocalsAsArray) {
+ prl(createFromMStack("mjvm_locals"));
+ } else {
+ // there are as many locals as defined in the last enter
+ for (int i = numberOfLocals -1; i >= 0; i--)
+ prl(createFromMStack(createLocal(i)));
+ }
+ break;
+ }
+
+ // read, print
+ case bread: {
+ // TODO maybe we'll need a buffer 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("@Read_Line_Proc(VAR tempa, Standard_Input_Port);");
+ prl("tempa := @String_To_Num(tempa);");
+ 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(@Format(tempa, @List_To_String(< tempb >)));");
+ } else
+ prl("Print_MJ_CHAR(tempb,tempa);");
+ prl(createEndVar());
+ break;
+ }
+ case print: {
+ prl(createStartVar("tempa", "tempb"));
+
+ prl(createTopTwoEStack());
+ if (genInlinePrint){
+ prl(createComment("print spacing",C_SPEC));
+ prl("PRINFLUSH(@Format(tempa,tempb));");
+ }
+ else
+ prl("Print_MJ(tempb,tempa);");
+ prl(createEndVar());
+ break;
+ }
+
+ case trap: {
+ prl("ERROR(\"Runtime error: trap(" + mjInput.get() + ")\");");
+ break;
+ }
+
+ default:
+ prl(createComment("unknown op error: " + op, C_ERR));
+ messages.message("unknown op error: " + op, TransMessages.M_ERR);
+ break;
+ }
+
+ boolean wasJump = mjInput.isJumpCode(op);
+ op = mjInput.get();
+ if (op >= 0)
+ if (wasJump)
+ prl("SKIP\n END");
+ else
+ prl("CALL a" + mjInput.getCounter() + "\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 (* 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.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");
+ System.out.println();
+ System.out.print(genLocalsAsArray?'*':' ');
+ System.out.println(" --genLocalsAsArray generate local variables as an array");
+ System.out.print(!genLocalsAsArray?'*':' ');
+ System.out.println(" --genLocalsSeparate generate local variables as separate entities");
+ }
+
+ 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 " + 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].length() > 0 && 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;
+ } else if (args[i].compareToIgnoreCase("--genLocalVars") == 0) {
+ genLocalVars = true;
+ } else if (args[i].compareToIgnoreCase("--genGlobalVars") == 0) {
+ genLocalVars = false;
+ } else if (args[i].compareToIgnoreCase("--genLocalsAsArray") == 0) {
+ genLocalsAsArray = true;
+ } else if (args[i].compareToIgnoreCase("--genLocalsSeparate") == 0) {
+ genLocalsAsArray = false;
+ } else {
+ System.err.println("unknown option, refusing to continue: "+args[i]);
+ System.exit(1);
+ }
+ i++;
+ }
+
+ if (i >= args.length) {
+ System.err.println("no filename supplied");
+ System.exit(2);
+ }
+
+ Path p = FileSystems.getDefault().getPath(args[i]);
+ if (!Files.isRegularFile(p)){
+ System.err.println("input file does not exist");
+ System.exit(1);
+ }
+
+ 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();
+ }
+ }
+ Calendar now = Calendar.getInstance();
+ try {
+ convertStream(Files.newInputStream(p));
+ } catch (Exception e) {
+ System.err.println("Failed converting the stream");
+ e.printStackTrace();
+ }
+ long mili = Calendar.getInstance().getTimeInMillis()
+ - now.getTimeInMillis();
+ System.out.println("conversion time:" + mili + " ms");
+ messages.printMessageCounters();
+ out.close();
+ }
+ }
+
+ public static void main(String[] args) {
+ new Mjc2wsl().run(args);
+ }
+
+
+}
\ No newline at end of file
diff --git a/src/com/quemaster/transformations/mjc2wsl/mjc2wsl.java b/src/com/quemaster/transformations/mjc2wsl/mjc2wsl.java
+++ /dev/null
@@ -1,958 +0,0 @@
-package com.quemaster.transformations.mjc2wsl;
-/*
- Copyright (C) 2014,2015, 2016, 2018 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.File;
-import java.io.FileInputStream;
-import java.io.IOException;
-import java.io.InputStream;
-import java.io.PrintWriter;
-import java.nio.file.FileSystems;
-import java.nio.file.Files;
-import java.nio.file.Path;
-import java.util.Calendar;
-import java.util.Properties;
-
-import com.quemaster.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 = "v0.2.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;
-
- private boolean genLocalVars = true;
-
- // make an array for all local variables OTHERWISE make them separate
- private boolean genLocalsAsArray = true;
-
- /** 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 Properties versionData;
-
- private String getVersion() {
- if (versionData == null) {
- versionData = new Properties();
- try {
- versionData.load(getClass().getResourceAsStream(versionFile));
- } catch (IOException | NullPointerException e) {
- // it doesn't matter
- //e.printStackTrace();
- }
- }
- String ver = versionData.getProperty("version");
- if (ver != null)
- return ver;
- else
- return versionN;
- }
-
- private MicroJavaInput mjInput;
-
- private PrintWriter out = null;
-
-
- 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);
- }
-
- public String createStandardStart(){
- return createStandardStart(10);
- }
-
- public String createStandardStart(int numWords){
- StringBuilder ret = new StringBuilder(
- "C:\" This file was automatically converted from microjava bytecode\n"
- +" using mjc2wsl "+getVersion()+"\n");
-
- ret.append(" -options:");
- ret.append("\n localsAsArrays:"+genLocalsAsArray);
- ret.append("\n localVarBlocks:"+genLocalVars);
- ret.append("\n popPush:"+genPopPush);
- ret.append("\n inlinePrint:"+genInlinePrint);
- ret.append("\n\";\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,");
-
- if (genLocalsAsArray)
- ret.append("mjvm_locals := ARRAY(1,0),");
-
- ret.append("\n\tmjvm_statics := ARRAY("+numWords+",0),");
- ret.append("\n\tmjvm_arrays := < >,");
- 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("PRINFLUSH(@Format(format, val ))");
- ret.append("\nEND\n");
-
- ret.append("\nPROC Print_MJ_CHAR(val, format VAR)==\n");
- ret.append("PRINFLUSH(@Format(format, CHR(val)))");
- ret.append("\nEND\n");
- }
-
- ret.append("\nEND");
- return ret.toString();
- }
-
- private String createStartVar(String... vars){
- 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(){
- if (genLocalVars)
- return "ENDVAR;";
- else
- return "";
- }
-
- private String createLocal(int i) {
- // arrays start at 1 in WSL, so we need an offset
- if (genLocalsAsArray)
- return "mjvm_locals[" + (i + 1) + "]";
- else
- return "mjvm_locals_" + i;
- }
-
- 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);
- }
-
- public void convertStream(InputStream ins) throws Exception{
- mjInput = new MicroJavaInput(ins);
-
- prl(createStandardStart(mjInput.getNumberOfWords()));
- prl("SKIP;\n ACTIONS a" + (14 + mjInput.getMainAdr()) + " :");
-
- // the number of Locals for procedures; need to remember it for exits
- int numberOfLocals = 0;
-
- int op = mjInput.get();
- while (op >= 0) {
- prl(" a" + mjInput.getCounter() + " ==");
- if (originalInComments)
- prl(createComment(mjInput.describeOpCode(op), C_OC));
- if (genPrintForEachAddress) {
- prl("PRINT(\"a" + mjInput.getCounter() + "\");");
- if (genPauseAfterEachAddress)
- prl("@Read_Line_Proc(VAR debug_disposable_string, Standard_Input_Port);");
- }
- switch (op) {
- case load: {
- prl(createToEStack(createLocal(mjInput.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(mjInput.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(mjInput.get2())));
- break;
- }
- case putstatic: {
- prl(createFromEStack(createStatic(mjInput.get2())));
- break;
- }
-
- case getfield: {
- int f = mjInput.get2();
- prl(createStartVar("tempa"));
- prl(createTopEStack());
- prl(createToEStack(createObject("tempa") + "[" + (f + 1) + "]"));
- prl(createEndVar());
- break;
- }
- case putfield: {
- int f = mjInput.get2();
- prl(createStartVar("tempa", "tempb"));
- prl(createTopTwoEStack());
- prl(createObject("tempb") + "[" + (f + 1) + "]:=tempa;");
- prl(createEndVar());
- break;
- }
-
- case const_: {
- prl(createToEStack(mjInput.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 = mjInput.get(), b2 = mjInput.get();
- prl(createLocal(b1) + " := " + createLocal(b1) + " + " + b2 + ";");
- break;
- }
-
- case new_: {
- int size = mjInput.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: {
- mjInput.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" + (mjInput.getCounter() + mjInput.get2()) + ";");
- break;
- }
-
- case jeq:
- case jne:
- case jlt:
- case jle:
- case jgt:
- case jge: {
- 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;
- }
-
- case call: {
- 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" + mjInput.getCounter() + " ==");
- break;
- }
- case enter: {
- int parameters = mjInput.get();
-
- numberOfLocals = mjInput.get();
- if (genLocalsAsArray) {
- prl(createToMStack("mjvm_locals"));
- prl("mjvm_locals := ARRAY(" + numberOfLocals + ",0);");
- } else {
- // TODO maybe we should generate VAR block for these somewhere
- for (int i = 0; i < numberOfLocals; i++) {
- prl(createToMStack(createLocal(i)));
- }
- }
-
- for (int i = parameters - 1; i >= 0; i--)
- prl(createFromEStack(createLocal(i)));
- break;
- }
- case exit: {
- if (genLocalsAsArray) {
- prl(createFromMStack("mjvm_locals"));
- } else {
- // there are as many locals as defined in the last enter
- for (int i = numberOfLocals -1; i >= 0; i--)
- prl(createFromMStack(createLocal(i)));
- }
- break;
- }
-
- // read, print
- case bread: {
- // TODO maybe we'll need a buffer 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("@Read_Line_Proc(VAR tempa, Standard_Input_Port);");
- prl("tempa := @String_To_Num(tempa);");
- 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(@Format(tempa, @List_To_String(< tempb >)));");
- } else
- prl("Print_MJ_CHAR(tempb,tempa);");
- prl(createEndVar());
- break;
- }
- case print: {
- prl(createStartVar("tempa", "tempb"));
-
- prl(createTopTwoEStack());
- if (genInlinePrint){
- prl(createComment("print spacing",C_SPEC));
- prl("PRINFLUSH(@Format(tempa,tempb));");
- }
- else
- prl("Print_MJ(tempb,tempa);");
- prl(createEndVar());
- break;
- }
-
- case trap: {
- prl("ERROR(\"Runtime error: trap(" + mjInput.get() + ")\");");
- break;
- }
-
- default:
- prl(createComment("unknown op error: " + op, C_ERR));
- messages.message("unknown op error: " + op, TransMessages.M_ERR);
- break;
- }
-
- boolean wasJump = mjInput.isJumpCode(op);
- op = mjInput.get();
- if (op >= 0)
- if (wasJump)
- prl("SKIP\n END");
- else
- prl("CALL a" + mjInput.getCounter() + "\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 (* 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.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");
- System.out.println();
- System.out.print(genLocalsAsArray?'*':' ');
- System.out.println(" --genLocalsAsArray generate local variables as an array");
- System.out.print(!genLocalsAsArray?'*':' ');
- System.out.println(" --genLocalsSeparate generate local variables as separate entities");
- }
-
- 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 " + 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].length() > 0 && 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;
- } else if (args[i].compareToIgnoreCase("--genLocalVars") == 0) {
- genLocalVars = true;
- } else if (args[i].compareToIgnoreCase("--genGlobalVars") == 0) {
- genLocalVars = false;
- } else if (args[i].compareToIgnoreCase("--genLocalsAsArray") == 0) {
- genLocalsAsArray = true;
- } else if (args[i].compareToIgnoreCase("--genLocalsSeparate") == 0) {
- genLocalsAsArray = false;
- } else {
- System.err.println("unknown option, refusing to continue: "+args[i]);
- System.exit(1);
- }
- i++;
- }
-
- if (i >= args.length) {
- System.err.println("no filename supplied");
- System.exit(2);
- }
-
- Path p = FileSystems.getDefault().getPath(args[i]);
- if (!Files.isRegularFile(p)){
- System.err.println("input file does not exist");
- System.exit(1);
- }
-
- 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();
- }
- }
- Calendar now = Calendar.getInstance();
- try {
- convertStream(Files.newInputStream(p));
- } catch (Exception e) {
- System.err.println("Failed converting the stream");
- e.printStackTrace();
- }
- long mili = Calendar.getInstance().getTimeInMillis()
- - now.getTimeInMillis();
- System.out.println("conversion time:" + mili + " ms");
- messages.printMessageCounters();
- out.close();
- }
- }
-
- public static void main(String[] args) {
- new mjc2wsl().run(args);
- }
-
-
-}
\ No newline at end of file