diff options
Diffstat (limited to 'src/piglet')
| -rw-r--r-- | src/piglet/piglet2spiglet/Main.java | 26 | ||||
| -rw-r--r-- | src/piglet/visitor/GenSpigletVisitor.java | 48 |
2 files changed, 44 insertions, 30 deletions
diff --git a/src/piglet/piglet2spiglet/Main.java b/src/piglet/piglet2spiglet/Main.java index 7c3d01b..a98b708 100644 --- a/src/piglet/piglet2spiglet/Main.java +++ b/src/piglet/piglet2spiglet/Main.java @@ -1,6 +1,9 @@ package piglet.piglet2spiglet;
+import java.io.InputStream;
+
+import aux.CCPrinter;
import piglet.ParseException;
import piglet.PigletParser;
import piglet.TokenMgrError;
@@ -10,20 +13,21 @@ import piglet.visitor.GenSpigletVisitor; import piglet.visitor.ScanTempVisitor;
-public class Main {
-
- public static void main(String[] args) {
- try {
- Node root = new PigletParser(System.in).Goal();
+public class Main {
+ public static CCPrinter execute(InputStream stream) {
+ try {
+ new PigletParser(stream);
+ Node root = PigletParser.Goal();
/*
* TODO: Implement your own Visitors and other classes.
*
*/
- ScanTempVisitor vt = new ScanTempVisitor();
- root.accept(vt);
- GenSpigletVisitor gen = new GenSpigletVisitor();
+ ScanTempVisitor vt = new ScanTempVisitor();
+ root.accept(vt);
+ GenSpigletVisitor gen = new GenSpigletVisitor();
gen.nTemp = Math.max(vt.maxtmp, 20);
root.accept(gen, null);
+ return gen.prn;
}
catch(TokenMgrError e){
//Handle Lexical Errors
@@ -36,6 +40,10 @@ public class Main { catch(Exception e){
e.printStackTrace();
}
-
+ return null;
+ }
+
+ public static void main(String[] args) {
+ execute(System.in).printAll();
}
}
\ No newline at end of file diff --git a/src/piglet/visitor/GenSpigletVisitor.java b/src/piglet/visitor/GenSpigletVisitor.java index b7a3cea..cd37ac9 100644 --- a/src/piglet/visitor/GenSpigletVisitor.java +++ b/src/piglet/visitor/GenSpigletVisitor.java @@ -2,6 +2,7 @@ package piglet.visitor; import java.util.Enumeration; import java.util.Vector;
+import aux.CCPrinter;
import piglet.piglet2spiglet.GenSpigletCtl;
import piglet.piglet2spiglet.PigletExpr;
import piglet.syntaxtree.BinOp; @@ -42,13 +43,18 @@ public class GenSpigletVisitor extends GJDepthFirst<PigletExpr, GenSpigletCtl> { final GenSpigletCtl Default = new GenSpigletCtl(GenSpigletCtl.Control.DEFAULT);
final GenSpigletCtl Print = new GenSpigletCtl(GenSpigletCtl.Control.PRINT);
final String BinOPs[] = {"LT", "PLUS", "MINUS", "TIMES" };
+ public CCPrinter prn;
+
+ public GenSpigletVisitor() {
+ prn = new CCPrinter();
+ }
String expr_to_tmp(PigletExpr e) {
if (e.type==PigletExpr.Expr_t.Temp) {
return e.toString();
} else {
nTemp++;
- System.out.println("MOVE TEMP " + nTemp + " " + e.toString());
+ prn.println("MOVE TEMP " + nTemp + " " + e.toString());
return "TEMP " + nTemp;
}
}
@@ -58,7 +64,7 @@ public class GenSpigletVisitor extends GJDepthFirst<PigletExpr, GenSpigletCtl> { return e.toString();
} else {
nTemp++;
- System.out.println("MOVE TEMP " + nTemp + " " + e.toString());
+ prn.println("MOVE TEMP " + nTemp + " " + e.toString());
return "TEMP " + nTemp;
}
}
@@ -74,9 +80,9 @@ public class GenSpigletVisitor extends GJDepthFirst<PigletExpr, GenSpigletCtl> { * f4 -> <EOF>
*/
public PigletExpr visit(Goal n, GenSpigletCtl argu) {
- System.out.println("MAIN");
+ prn.println("MAIN");
n.f1.accept(this, argu);
- System.out.println("END");
+ prn.println("END");
n.f3.accept(this, argu);
return null;
} @@ -99,7 +105,7 @@ public class GenSpigletVisitor extends GJDepthFirst<PigletExpr, GenSpigletCtl> { public PigletExpr visit(Procedure n, GenSpigletCtl argu) {
String lb = n.f0.f0.toString();
String numarg = n.f2.f0.toString();
- System.out.println(lb + " [ " + numarg + " ]");
+ prn.println(lb + " [ " + numarg + " ]");
n.f4.accept(this, Print);
return null;
} @@ -123,7 +129,7 @@ public class GenSpigletVisitor extends GJDepthFirst<PigletExpr, GenSpigletCtl> { * f0 -> "NOOP"
*/
public PigletExpr visit(NoOpStmt n, GenSpigletCtl argu) {
- System.out.println("NOOP");
+ prn.println("NOOP");
return null;
} @@ -131,7 +137,7 @@ public class GenSpigletVisitor extends GJDepthFirst<PigletExpr, GenSpigletCtl> { * f0 -> "ERROR"
*/
public PigletExpr visit(ErrorStmt n, GenSpigletCtl argu) {
- System.out.println("ERROR");
+ prn.println("ERROR");
return null;
} @@ -148,10 +154,10 @@ public class GenSpigletVisitor extends GJDepthFirst<PigletExpr, GenSpigletCtl> { tmpstr = e.toString();
} else {
nTemp++;
- System.out.println("MOVE TEMP " + nTemp + " " + e.toString());
+ prn.println("MOVE TEMP " + nTemp + " " + e.toString());
tmpstr = "TEMP " + nTemp;
}
- System.out.println("CJUMP " + tmpstr + " " + lb);
+ prn.println("CJUMP " + tmpstr + " " + lb);
return null;
} @@ -161,7 +167,7 @@ public class GenSpigletVisitor extends GJDepthFirst<PigletExpr, GenSpigletCtl> { */
public PigletExpr visit(JumpStmt n, GenSpigletCtl argu) {
String lb = n.f1.f0.toString();
- System.out.println("JUMP " + lb);
+ prn.println("JUMP " + lb);
return null;
} @@ -178,7 +184,7 @@ public class GenSpigletVisitor extends GJDepthFirst<PigletExpr, GenSpigletCtl> { String offs = n.f2.f0.toString();
t1 = expr_to_tmp(e1);
t2 = expr_to_tmp(e2);
- System.out.println("HSTORE " + t1 + " " + offs + " " + t2);
+ prn.println("HSTORE " + t1 + " " + offs + " " + t2);
return null;
} @@ -194,7 +200,7 @@ public class GenSpigletVisitor extends GJDepthFirst<PigletExpr, GenSpigletCtl> { String t = n.f1.accept(this, Default).toString();
String i = n.f3.f0.toString();
s = expr_to_tmp(e);
- System.out.println("HLOAD " + t + " " + s + " " + i);
+ prn.println("HLOAD " + t + " " + s + " " + i);
return null;
} @@ -206,7 +212,7 @@ public class GenSpigletVisitor extends GJDepthFirst<PigletExpr, GenSpigletCtl> { public PigletExpr visit(MoveStmt n, GenSpigletCtl argu) {
PigletExpr t = n.f1.accept(this, Default);
PigletExpr e = n.f2.accept(this, Default);
- System.out.println("MOVE " + t.toString() + " " + e.toString());
+ prn.println("MOVE " + t.toString() + " " + e.toString());
return null;
} @@ -217,7 +223,7 @@ public class GenSpigletVisitor extends GJDepthFirst<PigletExpr, GenSpigletCtl> { public PigletExpr visit(PrintStmt n, GenSpigletCtl argu) {
PigletExpr e = n.f1.accept(this, Default);
String s = expr_to_simple(e);
- System.out.println("PRINT " + s);
+ prn.println("PRINT " + s);
return null;
} @@ -251,14 +257,14 @@ public class GenSpigletVisitor extends GJDepthFirst<PigletExpr, GenSpigletCtl> { /* a normal expression or a function body */
if (argu.isPrint()) {
// a function body
- System.out.println("BEGIN");
+ prn.println("BEGIN");
/* statement list */
n.f1.accept(this, null);
/* return */
PigletExpr e = n.f3.accept(this, Default);
String ret = expr_to_simple(e);
- System.out.println("RETURN " + ret);
- System.out.println("END");
+ prn.println("RETURN " + ret);
+ prn.println("END");
return null;
} else {
// a normal expression, going to turn to a simpler expression
@@ -304,7 +310,7 @@ public class GenSpigletVisitor extends GJDepthFirst<PigletExpr, GenSpigletCtl> { String s;
if (!e.isSimple()) {
nTemp++;
- System.out.println("MOVE TEMP " + nTemp + " " + e.toString());
+ prn.println("MOVE TEMP " + nTemp + " " + e.toString());
s = "TEMP " + nTemp;
} else {
s = e.toString();
@@ -326,14 +332,14 @@ public class GenSpigletVisitor extends GJDepthFirst<PigletExpr, GenSpigletCtl> { /* the first expr can only be temp */
if (!(t1.type==PigletExpr.Expr_t.Temp)) {
nTemp++;
- System.out.println("MOVE TEMP " + nTemp + " " + t1.toString());
+ prn.println("MOVE TEMP " + nTemp + " " + t1.toString());
s1 = "TEMP " + nTemp;
} else {
s1 = t1.toString();
}
if (!t2.isSimple()) {
nTemp++;
- System.out.println("MOVE TEMP " + nTemp + " " + t2.toString());
+ prn.println("MOVE TEMP " + nTemp + " " + t2.toString());
s2 = "TEMP " + nTemp;
} else {
s2 = t2.toString();
@@ -377,7 +383,7 @@ public class GenSpigletVisitor extends GJDepthFirst<PigletExpr, GenSpigletCtl> { */
public PigletExpr visit(Label n, GenSpigletCtl argu) {
if (argu.isPrint()) {
- System.out.println(n.f0.toString());
+ prn.println(n.f0.toString());
}
return new PigletExpr(PigletExpr.Expr_t.Label, n.f0.toString());
} |