Fix of shadowing bug. Allow pointer and subarrays to be constant initialized. Compile time values may now pass around anything considered compile time constant. It's possible to index into an initializer list at compile time. (Some work still remains on this)

resources/testfragments/tmem.c3

@@ -0,0 +1,86 @@
+module tmem;
+import std::mem;
+import std::io;
+
+struct String
+{
+    Allocator allocator;
+    usize len;
+    usize capacity;
+    char* ptr;
+}
+
+func void String.init(String *s, char[] c)
+{
+    s.capacity = c.len + 16;
+    s.ptr = mem::_malloc(s.capacity);
+    s.len = c.len;
+    mem::copy(s.ptr, (char*)(c), c.len);
+}
+
+func char* String.zstr(String *s)
+{
+    char* c = mem::_malloc(s.len + 1);
+    mem::copy(c, s.ptr, s.len);
+    c[s.len] = 0;
+    return c;
+}
+
+func void String.appendc(String *s, char c)
+{
+    if (s.capacity == s.len)
+    {
+        s.capacity *= 2;
+        char* new_ptr = mem::_malloc(s.capacity);
+        mem::copy(new_ptr, s.ptr, s.len);
+        s.ptr = new_ptr;
+    }
+    s.ptr[s.len++] = c;
+}
+
+func void String.append(String *s, char[] other_string)
+{
+    if (s.capacity < s.len + other_string.len)
+    {
+        do
+        {
+            s.capacity *= 2;
+        }
+        while (s.capacity < s.len + other_string.len);
+        char* new_ptr = mem::_malloc(s.capacity);
+        mem::copy(new_ptr, s.ptr, s.len);
+        s.ptr = new_ptr;
+    }
+    mem::copy(s.ptr + s.len, (char*)(other_string), other_string.len);
+    s.len += other_string.len;
+}
+
+func void String.concat(String *s, String* other_string)
+{
+    if (s.capacity < s.len + other_string.len)
+    {
+        do
+        {
+            s.capacity *= 2;
+        }
+        while (s.capacity < s.len + other_string.len);
+        char* new_ptr = mem::_malloc(s.capacity);
+        mem::copy(new_ptr, s.ptr, s.len);
+        s.ptr = new_ptr;
+    }
+    mem::copy(s.ptr + s.len, other_string.ptr, other_string.len);
+    s.len += other_string.len;
+}
+
+func void main()
+{
+    String s;
+    s.init("Hello");
+    s.appendc(' ');
+    s.appendc('W');
+    s.append("orld!");
+    String w;
+    w.init("Yo man!");
+    s.concat(&w);
+    io::printf("Message was: %s\n", s.zstr());
+}