From 77d7c4366ee09726a2d492feae99c9c8539a012c Mon Sep 17 00:00:00 2001
From: otya128 <otya128@users.noreply.github.com>
Date: Sun, 11 Dec 2016 20:27:24 +0900
Subject: [PATCH] Implement PUSH

---
 SMILEBASIC/builtinfunctions.d | 33 +++++++++++++++++++++++++++++++++
 SMILEBASIC/type.d             | 29 +++++++++++++++++++++++++++++
 2 files changed, 62 insertions(+)

diff --git a/SMILEBASIC/builtinfunctions.d b/SMILEBASIC/builtinfunctions.d
index 62dc722..09f20cf 100644
--- a/SMILEBASIC/builtinfunctions.d
+++ b/SMILEBASIC/builtinfunctions.d
@@ -2355,6 +2355,39 @@ class BuiltinFunction
         }
         return std.math.log(a) / std.math.log(b);
     }
+    static void PUSH(Value ary, Value exp)
+    {
+        if (!ary.isArray)
+        {
+            throw new TypeMismatch("PUSH", 1);
+        }
+        if (!exp.canCast(ary.elementType))
+        {
+            throw new TypeMismatch("PUSH");
+        }
+        switch (ary.type)
+        {
+            case ValueType.String:
+                throw new IllegalFunctionCall("NOTIMPL:PUSH string");
+            case ValueType.IntegerArray:
+                if (ary.integerArray.dimCount != 1)
+                    throw new TypeMismatch("PUSH", 1);
+                ary.integerArray.push(exp.castInteger);
+                break;
+            case ValueType.DoubleArray:
+                if (ary.doubleArray.dimCount != 1)
+                    throw new TypeMismatch("PUSH", 1);
+                ary.doubleArray.push(exp.castDouble);
+                break;
+            case ValueType.StringArray:
+                if (ary.stringArray.dimCount != 1)
+                    throw new TypeMismatch("PUSH", 1);
+                ary.stringArray.push(exp.castString);
+                break;
+            default:
+                throw new TypeMismatch();
+        }
+    }
     //alias void function(PetitComputer, Value[], Value[]) BuiltinFunc;
     static BuiltinFunctions[wstring] builtinFunctions;
     static wstring getBasicName(BFD)(const wstring def)
diff --git a/SMILEBASIC/type.d b/SMILEBASIC/type.d
index d2a7fd3..abb40a7 100644
--- a/SMILEBASIC/type.d
+++ b/SMILEBASIC/type.d
@@ -235,6 +235,26 @@ struct Value
                 throw new TypeMismatch();
         }
     }
+    ValueType elementType()
+    {
+        switch(this.type)
+        {
+            case ValueType.String:
+                return ValueType.String;
+            case ValueType.IntegerArray:
+                return ValueType.Integer;
+            case ValueType.DoubleArray:
+                return ValueType.Double;
+            case ValueType.StringArray:
+                return ValueType.String;
+            default:
+                throw new TypeMismatch();
+        }
+    }
+    bool canCast(ValueType t)
+    {
+        return t == this.type || ((t == ValueType.Integer || t == ValueType.Double) && isNumber);
+    }
 }
 //import std.experimental.ndslice;
 //ndsliceがこれに相当?
@@ -359,5 +379,14 @@ class Array(T)
         if(i1 >= dim[0] && i2 >= dim[1] && i3 >= dim[2] && i4 >= dim[3]) throw new SubscriptOutOfRange();
         return array[i1] = v;//array[i1 * dim[0] * dim[1] * dim[2] + i2 * dim[1] + i3] = v;
     }
+    void push(T v)
+    {
+        if (dimCount != 1)
+        {
+            throw new TypeMismatch();
+        }
+        array ~= v;
+        dim[0]++;
+    }
 
 }