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xo-interpreter2 stack: define-expr's work at top-level

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Roland Conybeare 2026-02-17 14:42:17 -05:00
commit b64dee41cb
2 changed files with 22 additions and 3 deletions
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12
include/xo/object2/DArray.hpp
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@ -75,9 +75,6 @@ namespace xo {
requires (std::same_as<Args, obj<AGCObject>> && ...)
static DArray * array(obj<AAllocator> mm, Args... args);
const obj<AGCObject> & operator[](size_type index) const noexcept { return elts_[index]; }
obj<AGCObject> & operator[](size_type index) noexcept { return elts_[index]; }
///@}
/** @defgroup darray-access acecss methods **/
///@{
@ -91,6 +88,10 @@ namespace xo {
size_type size() const noexcept { return size_; }
/** return element @p index of this array (0-based) **/
obj<AGCObject> at(size_type index) const;
const obj<AGCObject> & operator[](size_type index) const noexcept { return elts_[index]; }
obj<AGCObject> & operator[](size_type index) noexcept { return elts_[index]; }
///@}
/** @defgroup darray-iterators iterators **/
///@{
@ -106,6 +107,11 @@ namespace xo {
/** @defgroup darray-general general methods **/
///@{
/** resize to @p new_size. @p new_size may not be larger than capacity
* Return true if resize was accomplished; false otherwise.
**/
bool resize(size_type new_size) noexcept;
///@}
/** @defgroup darray-conversion-operators conversion operators **/
///@{

13
src/object2/DArray.cpp
View file

@ -84,6 +84,19 @@ namespace xo {
}
}
bool
DArray::resize(size_type new_z) noexcept {
if (new_z >= capacity_) {
return false;
} else if (new_z > size_) {
// ensure new size is zeroed (we/re not zeroing if/when we shrink)
::memset((std::byte *)(&elts_[size_]), 0, (std::byte *)(&elts_[new_z]) - (std::byte *)(&elts_[size_]));
}
this->size_ = new_z;
return true;
}
// printing support
bool