addOperand

git-svn-id: https://svn.code.sf.net/p/jode/code/trunk@395 379699f6-c40d-0410-875b-85095c16579e

jode/jode/expr/ComplexExpression.java

@@ -36,6 +36,8 @@ public class ComplexExpression extends Expression {
         operator.parent = this;
         subExpressions = sub;
         for (int i=0; i< subExpressions.length; i++) {
+	    if (subExpressions[i] == null)
+		subExpressions[i] = new NopOperator(Type.tUnknown);
 	    subExpressions[i].parent = this;
 	    operandcount += subExpressions[i].getOperandCount();
 	}
@@ -46,6 +48,20 @@ public class ComplexExpression extends Expression {
 	return operandcount;
     }
 
+    public Expression addOperand(Expression op) {
+	for (int i= subExpressions.length-1; i >= 0; i--) {
+	    int opcount = subExpressions[i].getOperandCount();
+	    if (opcount > 0) {
+		subExpressions[i] = subExpressions[i].addOperand(op);
+		subExpressions[i].parent = this;
+		operandcount += subExpressions[i].getOperandCount() - opcount;
+		updateType();
+		return this;
+	    }
+	}
+	throw new jode.AssertError("addOperand called, but no operand needed");
+    }
+
     public Expression negate() {
         if (operator.getOperatorIndex() >= operator.COMPARE_OP && 
             operator.getOperatorIndex() < operator.COMPARE_OP+6) {
@@ -60,7 +76,10 @@ public class ComplexExpression extends Expression {
             }
             return this;
         } else if (operator.operator == operator.LOG_NOT_OP) {
+	    if (subExpressions[0] != null)
 		return subExpressions[0];
+	    else
+		return new NopOperator(Type.tBoolean);
         }
 
         Operator negop = 
@@ -197,15 +216,15 @@ public class ComplexExpression extends Expression {
         return subExpressions;
     }
 
-    public void setSubExpressions(int i, Expression expr) {
-	int diff = expr.getOperandCount()
-	    - subExpressions[i].getOperandCount();
-        subExpressions[i] = expr;
-	for (ComplexExpression ce = this; ce != null; 
-	     ce = (ComplexExpression) ce.parent)
-	    ce.operandcount += diff;
-        updateType();
-    }
+//      public void setSubExpressions(int i, Expression expr) {
+//  	int diff = expr.getOperandCount()
+//  	    - subExpressions[i].getOperandCount();
+//          subExpressions[i] = expr;
+//  	for (ComplexExpression ce = this; ce != null; 
+//  	     ce = (ComplexExpression) ce.parent)
+//  	    ce.operandcount += diff;
+//          updateType();
+//      }
 
     void updateSubTypes() {
         boolean changed = false;
@@ -342,16 +361,18 @@ public class ComplexExpression extends Expression {
 		&& subExpressions[1].getType().isOfType(Type.tString))
                 return subExpressions[1];
 
+	    subExpressions[1] = subExpressions[1].simplifyString();
+
             return new ComplexExpression
                 (new StringAddOperator(), new Expression[]
-                 { e, subExpressions[1].simplifyString() });
+		 { e, subExpressions[1] });
         }
         if (operator instanceof ConstructorOperator
             && (((ConstructorOperator) operator).getClassType() 
                 == Type.tStringBuffer)) {
             
-            if (subExpressions.length == 1 &&
-                subExpressions[0].getType().isOfType(Type.tString))
+            if (subExpressions.length == 1
+		&& subExpressions[0].getType().isOfType(Type.tString))
                 return subExpressions[0].simplifyString();
         }
         return null;
@@ -405,8 +426,8 @@ public class ComplexExpression extends Expression {
     public Expression simplify() {
         if (operator instanceof IfThenElseOperator &&
             operator.getType().isOfType(Type.tBoolean)) {
-            if (subExpressions[1].getOperator() instanceof ConstOperator &&
-                subExpressions[2].getOperator() instanceof ConstOperator) {
+            if (subExpressions[1].getOperator() instanceof ConstOperator
+		&& subExpressions[2].getOperator() instanceof ConstOperator) {
                 ConstOperator c1 = 
                     (ConstOperator) subExpressions[1].getOperator();
                 ConstOperator c2 = 
@@ -419,9 +440,9 @@ public class ComplexExpression extends Expression {
                     return subExpressions[0].negate().simplify();
             }
         }
-        else if (operator instanceof StoreInstruction &&
-                 subExpressions[subExpressions.length-1]
-                 .getOperator() instanceof ConstOperator) {
+        else if (operator instanceof StoreInstruction 
+                 && (subExpressions[subExpressions.length-1]
+		     .getOperator() instanceof ConstOperator)) {
 
             StoreInstruction store = (StoreInstruction) operator;
             ConstOperator one = (ConstOperator) 
@@ -446,8 +467,9 @@ public class ComplexExpression extends Expression {
                 ppfixop.parent = this;
             }
         }
-        else if (operator instanceof CompareUnaryOperator &&
-            subExpressions[0].getOperator() instanceof CompareToIntOperator) {
+        else if (operator instanceof CompareUnaryOperator 
+		 && (subExpressions[0].getOperator() 
+		     instanceof CompareToIntOperator)) {
             
             CompareBinaryOperator newOp = new CompareBinaryOperator
                 (subExpressions[0].getOperator().getOperandType(0),

jode/jode/expr/Expression.java

@@ -52,6 +52,8 @@ public abstract class Expression {
      */
     public abstract int getOperandCount();
 
+    public abstract Expression addOperand(Expression op);
+
     public Expression negate() {
         Operator negop = 
             new UnaryOperator(Type.tBoolean, Operator.LOG_NOT_OP);

jode/jode/expr/Operator.java

@@ -54,6 +54,11 @@ public abstract class Operator extends Expression {
             throw new jode.AssertError("type == null");
     }
 
+    public Expression addOperand(Expression op) {
+	return new ComplexExpression
+	    (this, new Expression[getOperandCount()]).addOperand(op);
+    }
+
     public Operator getOperator() {
         return this;
     }