2003/07/07 04:44:17

[org.ibex.core.git] / src / org / xwt / js / CompiledFunctionImpl.java

diff --git a/src/org/xwt/js/CompiledFunctionImpl.java b/src/org/xwt/js/CompiledFunctionImpl.java
index 8f063b2..721b0a4 100644 (file)
--- a/src/org/xwt/js/CompiledFunctionImpl.java
+++ b/src/org/xwt/js/CompiledFunctionImpl.java
@@ -353,26 +353,51 @@ class CompiledFunctionImpl extends JSCallable implements ByteCodes, Tokens {
                 t.push(isPrefix ? val : num);
                 break;
             }
+            
+            
+            case ADD: {
+                int count = ((Number)arg[pc]).intValue();
+                if(count < 2) throw new Error("this should never happen");
+                if(count == 2) {
+                    // common case
+                    Object right = t.pop();
+                    Object left = t.pop();
+                    if(left instanceof String || right instanceof String) t.push(JS.toString(left).concat(JS.toString(right)));
+                    else t.push(new Double(JS.toDouble(left) + JS.toDouble(right)));
+                    break;
+                }
+                Object[] args = new Object[count];
+                while(--count >= 0) args[count] = t.pop();
+                if(args[0] instanceof String) {
+                    StringBuffer sb = new StringBuffer(64);
+                    for(int i=0;i<args.length;i++) sb.append(JS.toString(args[i]));
+                    t.push(sb.toString());
+                } else {
+                    int numStrings = 0;
+                    for(int i=0;i<args.length;i++) if(args[i] instanceof String) numStrings++;
+                    if(numStrings == 0) {
+                        double d = 0.0;
+                        for(int i=0;i<args.length;i++) d += JS.toDouble(args[i]);
+                        t.push(new Double(d));
+                    } else {
+                        double d=0.0;
+                        int i=0;
+                        do {
+                            d += JS.toDouble(args[i++]);
+                        } while(!(args[i] instanceof String));
+                        StringBuffer sb = new StringBuffer(64);
+                        sb.append(JS.toString(new Double(d)));
+                        while(i < args.length) sb.append(JS.toString(args[i++]));
+                        t.push(sb.toString());
+                    }
+                }
+                break;
+            }
 
             default: {
                 Object right = t.pop();
                 Object left = t.pop();
                 switch(op[pc]) {
-
-                case ADD: {
-                    Object l = left;
-                    Object r = right;
-                    if (l instanceof String || r instanceof String) {
-                        if (l == null) l = "null";
-                        if (r == null) r = "null";
-                        if (l instanceof Number && ((Number)l).doubleValue() == ((Number)l).longValue())
-                            l = new Long(((Number)l).longValue());
-                        if (r instanceof Number && ((Number)r).doubleValue() == ((Number)r).longValue())
-                            r = new Long(((Number)r).longValue());
-                        t.push(l.toString() + r.toString()); break;
-                    }
-                    t.push(new Double(JS.toDouble(l) + JS.toDouble(r))); break;
-                }
                         
                 case BITOR: t.push(new Long(JS.toLong(left) | JS.toLong(right))); break;
                 case BITXOR: t.push(new Long(JS.toLong(left) ^ JS.toLong(right))); break;