1 files changed, 42 insertions, 18 deletions
diff --git a/std.py b/std.py
index 5e41935..7d69345 100644
--- a/std.py
+++ b/std.py
@@ -44,26 +44,50 @@ def std_debug_off():
     return NebBool(True)
 
 # math
-def std_add(arg1, arg2):
-    res = arg1.value + arg2.value
-    if isinstance(arg1, NebFloat) or isinstance(arg2, NebFloat):
-        return NebFloat(res)
+def std_add(arg, rest):
+    float_type = True if isinstance(arg, NebFloat) else False
+    if isinstance(rest, NebNumber):
+        acc = arg.value + rest.value
+        float_type = float_type or isinstance(rest, NebFloat)
     else:
-        return NebInt(res)
+        acc = arg.value
+        for item in rest:
+            acc += item.value
+            float_type = float_type or isinstance(item, NebFloat)
+    if float_type:
+        return NebFloat(acc)
+    else:
+        return NebInt(acc)
 
-def std_subtract(arg1, arg2):
-    res = arg1.value - arg2.value
-    if isinstance(arg1, NebFloat) or isinstance(arg2, NebFloat):
-        return NebFloat(res)
+def std_subtract(arg, rest):
+    float_type = True if isinstance(arg, NebFloat) else False
+    if isinstance(rest, NebNumber):
+        acc = arg.value - rest.value
+        float_type = float_type or isinstance(rest, NebFloat)
+    else:
+        acc = arg.value
+        for item in rest:
+            acc -= item.value
+            float_type = float_type or isinstance(item, NebFloat)
+    if float_type:
+        return NebFloat(acc)
     else:
-        return NebInt(res)
+        return NebInt(acc)
 
-def std_multiply(arg1, arg2):
-    res = arg1.value * arg2.value
-    if isinstance(arg1, NebFloat) or isinstance(arg2, NebFloat):
-        return NebFloat(res)
+def std_multiply(arg, rest):
+    float_type = True if isinstance(arg, NebFloat) else False
+    if isinstance(rest, NebNumber):
+        acc = arg.value * rest.value
+        float_type = float_type or isinstance(rest, NebFloat)
+    else:
+        acc = arg.value
+        for item in rest:
+            acc *= item.value
+            float_type = float_type or isinstance(item, NebFloat)
+    if float_type:
+        return NebFloat(acc)
     else:
-        return NebInt(res)
+        return NebInt(acc)
 
 # strings
 def std_concat(arg, rest):
@@ -234,13 +258,13 @@ def build_std():
     STD["debug-off"] = [debug_off]
 
     # arithmetic
-    add = FuncImpl(NebFunction("+", [NebNumber, NebNumber], NebNumber), std_add)
+    add = FuncImpl(NebFunction("+", [NebNumber, NebNumber], NebNumber, [NebNumber]), std_add)
     STD["+"] = [add]
 
-    subtract = FuncImpl(NebFunction("-", [NebNumber, NebNumber], NebNumber), std_subtract)
+    subtract = FuncImpl(NebFunction("-", [NebNumber, NebNumber], NebNumber, [NebNumber]), std_subtract)
     STD["-"] = [subtract]
 
-    multiply = FuncImpl(NebFunction("*", [NebNumber, NebNumber], NebNumber), std_multiply)
+    multiply = FuncImpl(NebFunction("*", [NebNumber, NebNumber], NebNumber, [NebNumber]), std_multiply)
     STD["*"] = [multiply]
 
     # strings