1 files changed, 112 insertions, 0 deletions
diff --git a/Build/source/utils/asymptote/array.h b/Build/source/utils/asymptote/array.h
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+++ b/Build/source/utils/asymptote/array.h
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+/*****
+ * array.h
+ * Tom Prince 2005/06/18
+ * 
+ * Array type used by virtual machine.
+ *****/
+
+#ifndef ARRAY_H
+#define ARRAY_H
+
+#include "vm.h"
+#include "common.h"
+#include "item.h"
+
+namespace vm {
+
+// Arrays are vectors with push and pop functions.
+class array : public mem::vector<item> {
+  bool cycle;  
+
+  void setNonBridgingSlice(size_t l, size_t r, mem::vector<item> *a);
+  void setBridgingSlice(size_t l, size_t r, mem::vector<item> *a);
+public:
+  array() : cycle(false) {}
+  
+  array(size_t n)
+    : mem::vector<item>(n), cycle(false)
+  {}
+
+  array(size_t n, item i, Int depth);
+
+  void push(item i)
+  {
+    push_back(i);
+  }
+
+  item pop()
+  {
+    item i=back();
+    pop_back();
+    return i;
+  }
+
+  template <typename T>
+  T read(size_t i) const
+  {
+    return get<T>((*this)[i]);
+  }
+  
+  array *slice(Int left, Int right);
+  void setSlice(Int left, Int right, array *a);
+
+  void cyclic(bool b) {
+    cycle=b;
+  }
+  
+  bool cyclic() const {
+    return cycle;
+  }
+
+  array *copyToDepth(Int depth);
+};
+
+template <typename T>
+inline T read(array *a, size_t i)
+{
+  return a->array::read<T>(i);
+}
+
+template <typename T>
+inline T read(const array &a, size_t i)
+{
+  return a.array::read<T>(i);
+}
+
+inline size_t checkArray(const vm::array *a)
+{
+  if(a == 0) vm::error("dereference of null array");
+  return a->size();
+}
+
+inline void checkEqual(size_t i, size_t j) {
+  if(i == j) return;
+  ostringstream buf;
+  buf << "operation attempted on arrays of different lengths: "
+      << i << " != " << j;
+  vm::error(buf);
+}
+
+inline size_t checkArrays(const vm::array *a, const vm::array *b) 
+{
+  size_t asize=checkArray(a);
+  size_t bsize=checkArray(b);
+  checkEqual(asize,bsize);
+  return asize;
+}
+ 
+// Tests if an item is actually an array.  This needs to be defined here,
+// after the array type is declared.
+inline bool isarray(const item& it)
+{
+  return *it.kind == typeid(array);
+} 
+
+// Copies an item to a depth d.  If d==0 or if the item is not array, then the
+// item is just returned without copying, otherwise, the array and its
+// subarrays are copied as deeply as possible up to a depth d.
+item copyItemToDepth(item i, Int depth);
+
+} // namespace vm
+
+#endif // ARRAY_H