2719 lines
86 KiB
Rust
2719 lines
86 KiB
Rust
#[cfg(test)]
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pub(crate) use crate::machine::gc::{IteratorUMP, StacklessPreOrderHeapIter};
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use crate::machine::heap::*;
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use crate::atom_table::*;
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use crate::types::*;
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use modular_bitfield::prelude::*;
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use std::ops::Deref;
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use std::vec::Vec;
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#[derive(BitfieldSpecifier, Clone, Copy, Debug, PartialEq, Eq)]
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#[bits = 2]
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enum IterStackLocTag {
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Iterable,
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Marked,
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PendingMark,
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}
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#[bitfield]
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#[repr(u64)]
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#[derive(Clone, Copy, Debug)]
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pub struct IterStackLoc {
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value: B62,
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tag: IterStackLocTag,
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}
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impl IterStackLoc {
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#[inline]
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pub fn iterable_heap_loc(h: usize) -> Self {
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IterStackLoc::new().with_tag(IterStackLocTag::Iterable).with_value(h as u64)
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}
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#[inline]
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pub fn mark_heap_loc(h: usize) -> Self {
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IterStackLoc::new().with_tag(IterStackLocTag::Marked).with_value(h as u64)
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}
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#[inline]
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pub fn pending_mark_heap_loc(h: usize) -> Self {
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IterStackLoc::new().with_tag(IterStackLocTag::PendingMark).with_value(h as u64)
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}
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#[inline]
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pub fn is_marked(self) -> bool {
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self.tag() == IterStackLocTag::Marked
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}
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#[inline]
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pub fn is_pending_mark(self) -> bool {
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self.tag() == IterStackLocTag::PendingMark
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}
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}
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#[inline]
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fn forward_if_referent_marked(heap: &mut [HeapCellValue], h: usize) {
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read_heap_cell!(heap[h],
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(HeapCellValueTag::Str
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| HeapCellValueTag::Lis
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| HeapCellValueTag::AttrVar
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| HeapCellValueTag::Var
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| HeapCellValueTag::PStrLoc, vh) => {
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if heap[vh].get_mark_bit() {
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heap[h].set_forwarding_bit(true);
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}
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}
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_ => {}
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)
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}
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#[derive(Debug)]
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pub struct StackfulPreOrderHeapIter<'a> {
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pub heap: &'a mut Vec<HeapCellValue>,
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stack: Vec<IterStackLoc>,
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h: usize,
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}
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impl<'a> Drop for StackfulPreOrderHeapIter<'a> {
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fn drop(&mut self) {
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while let Some(h) = self.stack.pop() {
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let h = h.value() as usize;
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self.heap[h].set_forwarding_bit(false);
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self.heap[h].set_mark_bit(false);
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}
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self.heap.pop();
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}
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}
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pub trait FocusedHeapIter: Iterator<Item = HeapCellValue> {
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fn focus(&self) -> usize;
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}
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impl<'a> FocusedHeapIter for StackfulPreOrderHeapIter<'a> {
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#[inline]
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fn focus(&self) -> usize {
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self.h
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}
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}
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impl<'a> StackfulPreOrderHeapIter<'a> {
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#[inline]
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fn new(heap: &'a mut Vec<HeapCellValue>, cell: HeapCellValue) -> Self {
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let h = heap.len();
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heap.push(cell);
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Self {
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heap,
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h,
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stack: vec![IterStackLoc::iterable_heap_loc(h)],
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}
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}
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#[inline]
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pub fn push_stack(&mut self, h: usize) {
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self.stack.push(IterStackLoc::iterable_heap_loc(h));
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}
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#[inline]
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pub fn stack_last(&self) -> Option<usize> {
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for h in self.stack.iter().rev() {
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let is_readable_marked = h.is_marked();
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let h = h.value() as usize;
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let cell = self.heap[h];
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if cell.get_forwarding_bit() {
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return Some(h);
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} else if cell.get_mark_bit() && !is_readable_marked {
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continue;
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}
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return Some(h);
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}
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None
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}
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#[inline]
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pub fn pop_stack(&mut self) -> Option<HeapCellValue> {
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while let Some(h) = self.stack.pop() {
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let is_readable_marked = h.is_marked();
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let h = h.value() as usize;
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self.h = h;
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let cell = &mut self.heap[h];
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if cell.get_forwarding_bit() {
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cell.set_forwarding_bit(false);
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} else if cell.get_mark_bit() && !is_readable_marked {
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cell.set_mark_bit(false);
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continue;
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}
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return Some(*cell);
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}
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None
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}
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fn push_if_unmarked(&mut self, h: usize) {
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if !self.heap[h].get_mark_bit() {
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self.heap[h].set_mark_bit(true);
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self.stack.push(IterStackLoc::iterable_heap_loc(h));
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}
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}
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fn follow(&mut self) -> Option<HeapCellValue> {
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while let Some(h) = self.stack.pop() {
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if h.is_pending_mark() {
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let h = h.value() as usize;
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self.push_if_unmarked(h);
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self.stack.push(IterStackLoc::mark_heap_loc(h));
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forward_if_referent_marked(&mut self.heap, h);
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continue;
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}
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let is_readable_marked = h.is_marked();
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let h = h.value() as usize;
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self.h = h;
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let cell = &mut self.heap[h];
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if cell.get_forwarding_bit() {
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let copy = *cell;
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cell.set_forwarding_bit(false);
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return Some(copy);
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} else if cell.get_mark_bit() && !is_readable_marked {
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cell.set_mark_bit(false);
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continue;
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}
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read_heap_cell!(*cell,
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(HeapCellValueTag::Str | HeapCellValueTag::PStrLoc, vh) => {
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self.push_if_unmarked(vh);
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self.stack.push(IterStackLoc::mark_heap_loc(vh));
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}
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(HeapCellValueTag::Lis, vh) => {
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self.push_if_unmarked(vh);
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self.stack.push(IterStackLoc::pending_mark_heap_loc(vh + 1));
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self.stack.push(IterStackLoc::mark_heap_loc(vh));
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forward_if_referent_marked(&mut self.heap, vh);
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return Some(self.heap[h]);
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}
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(HeapCellValueTag::AttrVar | HeapCellValueTag::Var, vh) => {
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self.push_if_unmarked(vh);
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self.stack.push(IterStackLoc::mark_heap_loc(vh));
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forward_if_referent_marked(&mut self.heap, vh);
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}
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(HeapCellValueTag::PStrOffset, offset) => {
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self.push_if_unmarked(offset);
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self.stack.push(IterStackLoc::iterable_heap_loc(h+1));
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return Some(self.heap[h]);
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}
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(HeapCellValueTag::PStr) => {
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self.push_if_unmarked(h);
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self.stack.push(IterStackLoc::iterable_heap_loc(h+1));
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forward_if_referent_marked(&mut self.heap, h+1);
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return Some(self.heap[h]);
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}
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(HeapCellValueTag::Atom, (_name, arity)) => {
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for h in (h + 2 .. h + arity + 1).rev() {
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self.stack.push(IterStackLoc::pending_mark_heap_loc(h));
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}
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if arity > 0 {
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self.push_if_unmarked(h+1);
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self.stack.push(IterStackLoc::mark_heap_loc(h+1));
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forward_if_referent_marked(&mut self.heap, h+1);
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}
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return Some(self.heap[h]);
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}
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_ => {
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return Some(*cell);
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}
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)
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}
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None
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}
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}
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impl<'a> Iterator for StackfulPreOrderHeapIter<'a> {
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type Item = HeapCellValue;
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#[inline]
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fn next(&mut self) -> Option<Self::Item> {
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self.follow()
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}
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}
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#[cfg(test)]
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#[inline(always)]
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pub(crate) fn stackless_preorder_iter(
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heap: &mut Vec<HeapCellValue>,
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cell: HeapCellValue,
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) -> StacklessPreOrderHeapIter<IteratorUMP> {
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StacklessPreOrderHeapIter::<IteratorUMP>::new(heap, cell)
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}
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#[inline(always)]
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pub(crate) fn stackful_preorder_iter(
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heap: &mut Vec<HeapCellValue>,
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cell: HeapCellValue,
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) -> StackfulPreOrderHeapIter {
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StackfulPreOrderHeapIter::new(heap, cell)
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}
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#[derive(Debug)]
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pub(crate) struct PostOrderIterator<Iter: FocusedHeapIter> {
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focus: usize,
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base_iter: Iter,
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base_iter_valid: bool,
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parent_stack: Vec<(usize, HeapCellValue, usize)>, // number of children, parent node, focus.
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}
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impl<Iter: FocusedHeapIter> Deref for PostOrderIterator<Iter> {
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type Target = Iter;
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fn deref(&self) -> &Self::Target {
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&self.base_iter
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}
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}
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impl<Iter: FocusedHeapIter> PostOrderIterator<Iter> {
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pub(crate) fn new(base_iter: Iter) -> Self {
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PostOrderIterator {
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focus: 0,
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base_iter,
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base_iter_valid: true,
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parent_stack: vec![],
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}
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}
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}
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impl<Iter: FocusedHeapIter> Iterator for PostOrderIterator<Iter> {
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type Item = HeapCellValue;
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fn next(&mut self) -> Option<Self::Item> {
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loop {
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if let Some((child_count, node, focus)) = self.parent_stack.pop() {
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if child_count == 0 {
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self.focus = focus;
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return Some(node);
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}
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self.parent_stack.push((child_count - 1, node, focus));
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}
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if self.base_iter_valid {
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if let Some(item) = self.base_iter.next() {
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let focus = self.base_iter.focus();
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read_heap_cell!(item,
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(HeapCellValueTag::Atom, (_name, arity)) => {
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self.parent_stack.push((arity, item, focus));
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}
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(HeapCellValueTag::Lis) => {
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self.parent_stack.push((2, item, focus));
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}
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(HeapCellValueTag::PStr | HeapCellValueTag::PStrOffset) => {
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self.parent_stack.push((1, item, focus));
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}
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_ => {
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self.focus = focus;
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return Some(item);
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}
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);
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continue;
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} else {
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self.base_iter_valid = false;
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}
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}
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if self.parent_stack.is_empty() {
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return None;
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}
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}
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}
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}
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impl<Iter: FocusedHeapIter> FocusedHeapIter for PostOrderIterator<Iter> {
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#[inline(always)]
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fn focus(&self) -> usize {
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self.focus
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}
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}
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impl<Iter: FocusedHeapIter> PostOrderIterator<Iter> {
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/* return true if the term at heap offset idx_loc is a
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* direct/inlined subterm of a structure at the focus of
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* self.stack.last(). this function is used to determine, e.g.,
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* ownership of inlined code indices.
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*/
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#[inline]
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pub(crate) fn direct_subterm_of_str(&self, idx_loc: usize) -> bool {
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if let Some((_child_count, item, focus)) = self.parent_stack.last() {
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read_heap_cell!(item,
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(HeapCellValueTag::Atom, (_name, arity)) => {
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return focus + arity >= idx_loc && *focus < idx_loc;
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}
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_ => {}
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);
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}
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false
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}
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}
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pub(crate) type LeftistPostOrderHeapIter<'a> = PostOrderIterator<StackfulPreOrderHeapIter<'a>>;
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impl<'a> LeftistPostOrderHeapIter<'a> {
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#[inline]
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pub fn pop_stack(&mut self) {
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if let Some((child_count, ..)) = self.parent_stack.last() {
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for _ in 0 .. *child_count {
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self.base_iter.pop_stack();
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}
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self.parent_stack.pop();
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}
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}
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#[inline]
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pub fn parent_stack_len(&self) -> usize {
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self.parent_stack.len()
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}
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}
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#[inline]
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pub(crate) fn stackful_post_order_iter<'a>(
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heap: &'a mut Heap,
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cell: HeapCellValue,
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) -> LeftistPostOrderHeapIter<'a> {
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PostOrderIterator::new(StackfulPreOrderHeapIter::new(heap, cell))
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}
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#[cfg(test)]
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pub(crate) type RightistPostOrderHeapIter<'a> =
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PostOrderIterator<StacklessPreOrderHeapIter<'a, IteratorUMP>>;
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#[cfg(test)]
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#[inline]
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pub(crate) fn stackless_post_order_iter<'a>(
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heap: &'a mut Heap,
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cell: HeapCellValue,
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) -> RightistPostOrderHeapIter<'a> {
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PostOrderIterator::new(stackless_preorder_iter(heap, cell))
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}
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#[cfg(test)]
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mod tests {
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use super::*;
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use crate::machine::mock_wam::*;
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#[test]
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fn heap_stackless_iter_tests() {
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let mut wam = MockWAM::new();
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let f_atom = atom!("f");
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let a_atom = atom!("a");
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let b_atom = atom!("b");
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wam.machine_st
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.heap
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.extend(functor!(f_atom, [atom(a_atom), atom(b_atom)]));
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{
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let mut iter = stackless_preorder_iter(&mut wam.machine_st.heap, str_loc_as_cell!(0));
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assert_eq!(
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unmark_cell_bits!(iter.next().unwrap()),
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atom_as_cell!(f_atom, 2)
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);
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assert_eq!(
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unmark_cell_bits!(iter.next().unwrap()),
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atom_as_cell!(b_atom, 0)
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);
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assert_eq!(
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unmark_cell_bits!(iter.next().unwrap()),
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atom_as_cell!(a_atom, 0)
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);
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assert_eq!(iter.next(), None);
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}
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all_cells_unmarked(&wam.machine_st.heap);
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wam.machine_st.heap.clear();
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wam.machine_st.heap.extend(functor!(
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f_atom,
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[
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atom(a_atom),
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atom(b_atom),
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atom(a_atom),
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cell(str_loc_as_cell!(0))
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]
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));
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for _ in 0..20 {
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let mut iter = stackless_preorder_iter(&mut wam.machine_st.heap, str_loc_as_cell!(0));
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assert_eq!(
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unmark_cell_bits!(iter.next().unwrap()),
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atom_as_cell!(f_atom, 4)
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);
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assert_eq!(unmark_cell_bits!(iter.next().unwrap()), str_loc_as_cell!(0));
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assert_eq!(
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unmark_cell_bits!(iter.next().unwrap()),
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atom_as_cell!(a_atom)
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);
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|
|
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assert_eq!(
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unmark_cell_bits!(iter.next().unwrap()),
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atom_as_cell!(b_atom)
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);
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|
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assert_eq!(
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unmark_cell_bits!(iter.next().unwrap()),
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atom_as_cell!(a_atom)
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);
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|
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assert_eq!(iter.next(), None);
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}
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|
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all_cells_unmarked(&wam.machine_st.heap);
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wam.machine_st.heap.clear();
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wam.machine_st.heap.push(str_loc_as_cell!(1));
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|
|
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wam.machine_st.heap.extend(functor!(
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f_atom,
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[
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atom(a_atom),
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atom(b_atom),
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atom(a_atom),
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cell(str_loc_as_cell!(1))
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]
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));
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for _ in 0..200000 {
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let mut iter = stackless_preorder_iter(&mut wam.machine_st.heap, heap_loc_as_cell!(0));
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assert_eq!(
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unmark_cell_bits!(iter.next().unwrap()),
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atom_as_cell!(f_atom, 4)
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);
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assert_eq!(unmark_cell_bits!(iter.next().unwrap()), str_loc_as_cell!(1));
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assert_eq!(
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unmark_cell_bits!(iter.next().unwrap()),
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atom_as_cell!(a_atom)
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);
|
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assert_eq!(
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unmark_cell_bits!(iter.next().unwrap()),
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atom_as_cell!(b_atom)
|
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);
|
|
assert_eq!(
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unmark_cell_bits!(iter.next().unwrap()),
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atom_as_cell!(a_atom)
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);
|
|
|
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assert_eq!(iter.next(), None);
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}
|
|
|
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all_cells_unmarked(&wam.machine_st.heap);
|
|
|
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wam.machine_st.heap.clear();
|
|
|
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{
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|
wam.machine_st.heap.push(heap_loc_as_cell!(0));
|
|
|
|
let mut iter = stackless_preorder_iter(
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&mut wam.machine_st.heap,
|
|
heap_loc_as_cell!(0),
|
|
);
|
|
|
|
assert_eq!(unmark_cell_bits!(iter.next().unwrap()), heap_loc_as_cell!(0));
|
|
assert_eq!(iter.next(), None);
|
|
}
|
|
|
|
all_cells_unmarked(&wam.machine_st.heap);
|
|
|
|
wam.machine_st.heap.clear();
|
|
|
|
// term is: [a, b]
|
|
wam.machine_st.heap.push(list_loc_as_cell!(1));
|
|
wam.machine_st.heap.push(atom_as_cell!(a_atom));
|
|
wam.machine_st.heap.push(list_loc_as_cell!(3));
|
|
wam.machine_st.heap.push(atom_as_cell!(b_atom));
|
|
wam.machine_st.heap.push(empty_list_as_cell!());
|
|
|
|
{
|
|
let mut iter = stackless_preorder_iter(
|
|
&mut wam.machine_st.heap,
|
|
heap_loc_as_cell!(0),
|
|
);
|
|
|
|
assert_eq!(
|
|
unmark_cell_bits!(iter.next().unwrap()),
|
|
list_loc_as_cell!(1)
|
|
);
|
|
assert_eq!(
|
|
unmark_cell_bits!(iter.next().unwrap()),
|
|
list_loc_as_cell!(3)
|
|
);
|
|
assert_eq!(
|
|
unmark_cell_bits!(iter.next().unwrap()),
|
|
empty_list_as_cell!()
|
|
);
|
|
assert_eq!(
|
|
unmark_cell_bits!(iter.next().unwrap()),
|
|
atom_as_cell!(b_atom)
|
|
);
|
|
|
|
assert_eq!(
|
|
unmark_cell_bits!(iter.next().unwrap()),
|
|
atom_as_cell!(a_atom)
|
|
);
|
|
|
|
assert_eq!(iter.next(), None);
|
|
}
|
|
|
|
all_cells_unmarked(&wam.machine_st.heap);
|
|
|
|
wam.machine_st.heap.pop();
|
|
|
|
// now make the list cyclic.
|
|
wam.machine_st.heap.push(heap_loc_as_cell!(0));
|
|
|
|
{
|
|
let mut iter = stackless_preorder_iter(
|
|
&mut wam.machine_st.heap,
|
|
heap_loc_as_cell!(0),
|
|
);
|
|
|
|
assert_eq!(
|
|
unmark_cell_bits!(iter.next().unwrap()),
|
|
list_loc_as_cell!(1)
|
|
);
|
|
assert_eq!(
|
|
unmark_cell_bits!(iter.next().unwrap()),
|
|
list_loc_as_cell!(3)
|
|
);
|
|
assert_eq!(
|
|
unmark_cell_bits!(iter.next().unwrap()),
|
|
heap_loc_as_cell!(0)
|
|
);
|
|
assert_eq!(
|
|
unmark_cell_bits!(iter.next().unwrap()),
|
|
atom_as_cell!(b_atom)
|
|
);
|
|
assert_eq!(
|
|
unmark_cell_bits!(iter.next().unwrap()),
|
|
atom_as_cell!(a_atom)
|
|
);
|
|
|
|
assert_eq!(iter.next(), None);
|
|
}
|
|
|
|
wam.machine_st.heap.clear();
|
|
|
|
// first a 'dangling' partial string, later modified to be a two-part complete string,
|
|
// then a three-part cyclic string involving an uncompacted list of chars.
|
|
let pstr_var_cell = put_partial_string(&mut wam.machine_st.heap, "abc ", &mut wam.machine_st.atom_tbl);
|
|
let pstr_cell = wam.machine_st.heap[pstr_var_cell.get_value() as usize];
|
|
|
|
{
|
|
let mut iter = stackless_preorder_iter(&mut wam.machine_st.heap, pstr_loc_as_cell!(0));
|
|
|
|
assert_eq!(unmark_cell_bits!(iter.next().unwrap()), pstr_cell);
|
|
assert_eq!(
|
|
unmark_cell_bits!(iter.next().unwrap()),
|
|
heap_loc_as_cell!(1),
|
|
);
|
|
|
|
assert!(iter.next().is_none());
|
|
}
|
|
|
|
assert_eq!(wam.machine_st.heap[0], pstr_cell);
|
|
assert_eq!(wam.machine_st.heap[1], heap_loc_as_cell!(1));
|
|
|
|
wam.machine_st.heap.pop();
|
|
wam.machine_st.heap.push(pstr_loc_as_cell!(2));
|
|
|
|
let pstr_second_var_cell = put_partial_string(
|
|
&mut wam.machine_st.heap,
|
|
"def",
|
|
&mut wam.machine_st.atom_tbl,
|
|
);
|
|
|
|
let pstr_second_cell = wam.machine_st.heap[pstr_second_var_cell.get_value() as usize];
|
|
|
|
{
|
|
let mut iter = stackless_preorder_iter(&mut wam.machine_st.heap, pstr_loc_as_cell!(0));
|
|
|
|
assert_eq!(unmark_cell_bits!(iter.next().unwrap()), pstr_cell);
|
|
assert_eq!(unmark_cell_bits!(iter.next().unwrap()), pstr_second_cell);
|
|
assert_eq!(
|
|
unmark_cell_bits!(iter.next().unwrap()),
|
|
heap_loc_as_cell!(3),
|
|
);
|
|
|
|
assert!(iter.next().is_none());
|
|
}
|
|
|
|
assert_eq!(wam.machine_st.heap[0], pstr_cell);
|
|
assert_eq!(wam.machine_st.heap[1], pstr_loc_as_cell!(2));
|
|
assert_eq!(wam.machine_st.heap[2], pstr_second_cell);
|
|
assert_eq!(wam.machine_st.heap[3], heap_loc_as_cell!(3));
|
|
|
|
wam.machine_st.heap.pop();
|
|
wam.machine_st.heap.push(pstr_loc_as_cell!(4));
|
|
wam.machine_st.heap.push(pstr_offset_as_cell!(0));
|
|
wam.machine_st.heap.push(fixnum_as_cell!(Fixnum::build_with(2)));
|
|
|
|
{
|
|
let mut iter = stackless_preorder_iter(
|
|
&mut wam.machine_st.heap,
|
|
pstr_loc_as_cell!(4),
|
|
);
|
|
|
|
let pstr_offset_cell = pstr_offset_as_cell!(0);
|
|
|
|
assert_eq!(unmark_cell_bits!(iter.next().unwrap()), pstr_offset_cell);
|
|
assert_eq!(unmark_cell_bits!(iter.next().unwrap()), pstr_cell);
|
|
assert_eq!(unmark_cell_bits!(iter.next().unwrap()), pstr_second_cell);
|
|
|
|
assert_eq!(iter.next(), None);
|
|
}
|
|
|
|
assert_eq!(unmark_cell_bits!(wam.machine_st.heap[0]), pstr_cell);
|
|
assert_eq!(unmark_cell_bits!(wam.machine_st.heap[1]), pstr_loc_as_cell!(2));
|
|
assert_eq!(unmark_cell_bits!(wam.machine_st.heap[2]), pstr_second_cell);
|
|
assert_eq!(unmark_cell_bits!(wam.machine_st.heap[3]), pstr_loc_as_cell!(4));
|
|
assert_eq!(unmark_cell_bits!(wam.machine_st.heap[4]), pstr_offset_as_cell!(0));
|
|
assert_eq!(unmark_cell_bits!(wam.machine_st.heap[5]), fixnum_as_cell!(Fixnum::build_with(2)));
|
|
|
|
wam.machine_st.heap.truncate(4);
|
|
|
|
wam.machine_st.heap.pop();
|
|
wam.machine_st.heap.push(pstr_loc_as_cell!(wam.machine_st.heap.len() + 1));
|
|
|
|
wam.machine_st.heap.push(pstr_offset_as_cell!(0));
|
|
wam.machine_st.heap.push(fixnum_as_cell!(Fixnum::build_with(0i64)));
|
|
|
|
{
|
|
let mut iter = stackless_preorder_iter(&mut wam.machine_st.heap, pstr_loc_as_cell!(0));
|
|
let pstr_offset_cell = pstr_offset_as_cell!(0);
|
|
|
|
assert_eq!(unmark_cell_bits!(iter.next().unwrap()), pstr_cell);
|
|
assert_eq!(unmark_cell_bits!(iter.next().unwrap()), pstr_second_cell);
|
|
|
|
assert_eq!(unmark_cell_bits!(iter.next().unwrap()), pstr_offset_cell);
|
|
assert_eq!(unmark_cell_bits!(iter.next().unwrap()), pstr_offset_cell);
|
|
|
|
assert_eq!(iter.next(), None);
|
|
}
|
|
|
|
all_cells_unmarked(&wam.machine_st.heap);
|
|
|
|
wam.machine_st.heap.pop();
|
|
wam.machine_st.heap.push(fixnum_as_cell!(Fixnum::build_with(1i64)));
|
|
|
|
{
|
|
let mut iter = stackless_preorder_iter(&mut wam.machine_st.heap, pstr_loc_as_cell!(0));
|
|
|
|
assert_eq!(unmark_cell_bits!(iter.next().unwrap()), pstr_cell);
|
|
assert_eq!(unmark_cell_bits!(iter.next().unwrap()), pstr_second_cell);
|
|
|
|
assert_eq!(unmark_cell_bits!(iter.next().unwrap()), pstr_offset_as_cell!(0));
|
|
assert_eq!(unmark_cell_bits!(iter.next().unwrap()), pstr_offset_as_cell!(0));
|
|
|
|
assert_eq!(iter.next(), None);
|
|
|
|
assert_eq!(iter.heap[4], pstr_offset_as_cell!(0));
|
|
assert_eq!(iter.heap[5], fixnum_as_cell!(Fixnum::build_with(1i64)));
|
|
}
|
|
|
|
all_cells_unmarked(&wam.machine_st.heap);
|
|
|
|
wam.machine_st.heap.clear();
|
|
|
|
let functor = functor!(f_atom, [atom(a_atom), atom(b_atom), atom(b_atom)]);
|
|
|
|
wam.machine_st.heap.push(list_loc_as_cell!(1));
|
|
wam.machine_st.heap.push(str_loc_as_cell!(5));
|
|
wam.machine_st.heap.push(list_loc_as_cell!(3));
|
|
wam.machine_st.heap.push(str_loc_as_cell!(5));
|
|
wam.machine_st.heap.push(empty_list_as_cell!());
|
|
|
|
wam.machine_st.heap.extend(functor);
|
|
|
|
{
|
|
let mut iter = stackless_preorder_iter(&mut wam.machine_st.heap, heap_loc_as_cell!(0));
|
|
|
|
assert_eq!(
|
|
unmark_cell_bits!(iter.next().unwrap()),
|
|
list_loc_as_cell!(1)
|
|
);
|
|
assert_eq!(
|
|
unmark_cell_bits!(iter.next().unwrap()),
|
|
list_loc_as_cell!(3)
|
|
);
|
|
assert_eq!(
|
|
unmark_cell_bits!(iter.next().unwrap()),
|
|
empty_list_as_cell!()
|
|
);
|
|
|
|
assert_eq!(
|
|
unmark_cell_bits!(iter.next().unwrap()),
|
|
atom_as_cell!(f_atom, 3)
|
|
);
|
|
assert_eq!(
|
|
unmark_cell_bits!(iter.next().unwrap()),
|
|
atom_as_cell!(b_atom)
|
|
);
|
|
assert_eq!(
|
|
unmark_cell_bits!(iter.next().unwrap()),
|
|
atom_as_cell!(b_atom)
|
|
);
|
|
assert_eq!(
|
|
unmark_cell_bits!(iter.next().unwrap()),
|
|
atom_as_cell!(a_atom)
|
|
);
|
|
|
|
assert_eq!(
|
|
unmark_cell_bits!(iter.next().unwrap()),
|
|
atom_as_cell!(f_atom, 3)
|
|
);
|
|
|
|
assert_eq!(
|
|
unmark_cell_bits!(iter.next().unwrap()),
|
|
atom_as_cell!(b_atom)
|
|
);
|
|
assert_eq!(
|
|
unmark_cell_bits!(iter.next().unwrap()),
|
|
atom_as_cell!(b_atom)
|
|
);
|
|
assert_eq!(
|
|
unmark_cell_bits!(iter.next().unwrap()),
|
|
atom_as_cell!(a_atom)
|
|
);
|
|
|
|
assert_eq!(iter.next(), None);
|
|
}
|
|
|
|
all_cells_unmarked(&wam.machine_st.heap);
|
|
|
|
{
|
|
let mut iter = stackless_preorder_iter(&mut wam.machine_st.heap, heap_loc_as_cell!(0));
|
|
|
|
assert_eq!(
|
|
unmark_cell_bits!(iter.next().unwrap()),
|
|
list_loc_as_cell!(1)
|
|
);
|
|
assert_eq!(
|
|
unmark_cell_bits!(iter.next().unwrap()),
|
|
list_loc_as_cell!(3)
|
|
);
|
|
assert_eq!(
|
|
unmark_cell_bits!(iter.next().unwrap()),
|
|
empty_list_as_cell!()
|
|
);
|
|
|
|
assert_eq!(
|
|
unmark_cell_bits!(iter.next().unwrap()),
|
|
atom_as_cell!(f_atom, 3)
|
|
);
|
|
assert_eq!(
|
|
unmark_cell_bits!(iter.next().unwrap()),
|
|
atom_as_cell!(b_atom)
|
|
);
|
|
assert_eq!(
|
|
unmark_cell_bits!(iter.next().unwrap()),
|
|
atom_as_cell!(b_atom)
|
|
);
|
|
assert_eq!(
|
|
unmark_cell_bits!(iter.next().unwrap()),
|
|
atom_as_cell!(a_atom)
|
|
);
|
|
|
|
// drop the iterator before the iteration is complete to test
|
|
// that modified heap cells are restored to their
|
|
// pre-traversal state by the stackless iterator's Drop
|
|
// instance.
|
|
}
|
|
|
|
all_cells_unmarked(&wam.machine_st.heap);
|
|
|
|
assert_eq!(wam.machine_st.heap[0], list_loc_as_cell!(1));
|
|
assert_eq!(wam.machine_st.heap[1], str_loc_as_cell!(5));
|
|
assert_eq!(wam.machine_st.heap[2], list_loc_as_cell!(3));
|
|
assert_eq!(wam.machine_st.heap[3], str_loc_as_cell!(5));
|
|
assert_eq!(wam.machine_st.heap[4], empty_list_as_cell!());
|
|
|
|
{
|
|
let mut iter = stackless_preorder_iter(&mut wam.machine_st.heap, heap_loc_as_cell!(0));
|
|
|
|
assert_eq!(
|
|
unmark_cell_bits!(iter.next().unwrap()),
|
|
list_loc_as_cell!(1)
|
|
);
|
|
assert_eq!(
|
|
unmark_cell_bits!(iter.next().unwrap()),
|
|
list_loc_as_cell!(3)
|
|
);
|
|
assert_eq!(
|
|
unmark_cell_bits!(iter.next().unwrap()),
|
|
empty_list_as_cell!()
|
|
);
|
|
|
|
// drop the iterator before the iteration is complete to test
|
|
// that modified heap cells are restored to their
|
|
// pre-traversal state by the stackless iterator's Drop
|
|
// instance.
|
|
}
|
|
|
|
all_cells_unmarked(&wam.machine_st.heap);
|
|
|
|
assert_eq!(wam.machine_st.heap[0], list_loc_as_cell!(1));
|
|
assert_eq!(wam.machine_st.heap[1], str_loc_as_cell!(5));
|
|
assert_eq!(wam.machine_st.heap[2], list_loc_as_cell!(3));
|
|
assert_eq!(wam.machine_st.heap[3], str_loc_as_cell!(5));
|
|
assert_eq!(wam.machine_st.heap[4], empty_list_as_cell!());
|
|
|
|
wam.machine_st.heap[4] = list_loc_as_cell!(1);
|
|
|
|
{
|
|
let mut iter = stackless_preorder_iter(&mut wam.machine_st.heap, heap_loc_as_cell!(0));
|
|
|
|
assert_eq!(
|
|
unmark_cell_bits!(iter.next().unwrap()),
|
|
list_loc_as_cell!(1)
|
|
);
|
|
assert_eq!(
|
|
unmark_cell_bits!(iter.next().unwrap()),
|
|
list_loc_as_cell!(3)
|
|
);
|
|
assert_eq!(
|
|
unmark_cell_bits!(iter.next().unwrap()),
|
|
list_loc_as_cell!(1),
|
|
);
|
|
|
|
assert_eq!(
|
|
unmark_cell_bits!(iter.next().unwrap()),
|
|
atom_as_cell!(f_atom, 3)
|
|
);
|
|
|
|
assert_eq!(
|
|
unmark_cell_bits!(iter.next().unwrap()),
|
|
atom_as_cell!(b_atom)
|
|
);
|
|
assert_eq!(
|
|
unmark_cell_bits!(iter.next().unwrap()),
|
|
atom_as_cell!(b_atom)
|
|
);
|
|
assert_eq!(
|
|
unmark_cell_bits!(iter.next().unwrap()),
|
|
atom_as_cell!(a_atom)
|
|
);
|
|
|
|
assert_eq!(
|
|
unmark_cell_bits!(iter.next().unwrap()),
|
|
atom_as_cell!(f_atom, 3)
|
|
);
|
|
|
|
assert_eq!(
|
|
unmark_cell_bits!(iter.next().unwrap()),
|
|
atom_as_cell!(b_atom)
|
|
);
|
|
assert_eq!(
|
|
unmark_cell_bits!(iter.next().unwrap()),
|
|
atom_as_cell!(b_atom)
|
|
);
|
|
assert_eq!(
|
|
unmark_cell_bits!(iter.next().unwrap()),
|
|
atom_as_cell!(a_atom)
|
|
);
|
|
|
|
assert_eq!(iter.next(), None);
|
|
}
|
|
|
|
all_cells_unmarked(&wam.machine_st.heap);
|
|
|
|
wam.machine_st.heap.clear();
|
|
|
|
wam.machine_st.heap.push(heap_loc_as_cell!(1));
|
|
wam.machine_st.heap.push(heap_loc_as_cell!(2));
|
|
wam.machine_st.heap.push(heap_loc_as_cell!(3));
|
|
wam.machine_st.heap.push(heap_loc_as_cell!(3));
|
|
|
|
{
|
|
let mut iter = stackless_preorder_iter(&mut wam.machine_st.heap, heap_loc_as_cell!(0));
|
|
|
|
assert_eq!(iter.next().unwrap(), heap_loc_as_cell!(3));
|
|
|
|
assert_eq!(iter.next(), None);
|
|
}
|
|
|
|
all_cells_unmarked(&wam.machine_st.heap);
|
|
|
|
assert_eq!(unmark_cell_bits!(wam.machine_st.heap[0]), heap_loc_as_cell!(1));
|
|
assert_eq!(unmark_cell_bits!(wam.machine_st.heap[1]), heap_loc_as_cell!(2));
|
|
assert_eq!(unmark_cell_bits!(wam.machine_st.heap[2]), heap_loc_as_cell!(3));
|
|
assert_eq!(unmark_cell_bits!(wam.machine_st.heap[3]), heap_loc_as_cell!(3));
|
|
|
|
wam.machine_st.heap.clear();
|
|
|
|
// print L = [L|L].
|
|
wam.machine_st.heap.push(list_loc_as_cell!(1));
|
|
wam.machine_st.heap.push(list_loc_as_cell!(1));
|
|
wam.machine_st.heap.push(list_loc_as_cell!(1));
|
|
|
|
{
|
|
let mut iter = stackless_preorder_iter(&mut wam.machine_st.heap, heap_loc_as_cell!(0));
|
|
|
|
assert_eq!(iter.next().unwrap(), list_loc_as_cell!(1));
|
|
assert_eq!(
|
|
unmark_cell_bits!(iter.next().unwrap()),
|
|
list_loc_as_cell!(1)
|
|
);
|
|
|
|
assert_eq!(iter.next().unwrap(), list_loc_as_cell!(1));
|
|
// this is what happens! this next line! We would like it not to happen though.
|
|
assert_eq!(iter.next().unwrap(), list_loc_as_cell!(1));
|
|
|
|
assert_eq!(iter.next(), None);
|
|
}
|
|
|
|
all_cells_unmarked(&wam.machine_st.heap);
|
|
|
|
assert_eq!(unmark_cell_bits!(wam.machine_st.heap[0]), list_loc_as_cell!(1));
|
|
assert_eq!(unmark_cell_bits!(wam.machine_st.heap[1]), list_loc_as_cell!(1));
|
|
assert_eq!(unmark_cell_bits!(wam.machine_st.heap[2]), list_loc_as_cell!(1));
|
|
|
|
wam.machine_st.heap.clear();
|
|
|
|
// term is [X,f(Y),Z].
|
|
wam.machine_st.heap.push(list_loc_as_cell!(1));
|
|
wam.machine_st.heap.push(heap_loc_as_cell!(1));
|
|
wam.machine_st.heap.push(heap_loc_as_cell!(3)); // 2
|
|
wam.machine_st.heap.push(list_loc_as_cell!(4)); // 3
|
|
wam.machine_st.heap.push(str_loc_as_cell!(6)); // 4
|
|
wam.machine_st.heap.push(heap_loc_as_cell!(8));
|
|
wam.machine_st.heap.push(atom_as_cell!(f_atom, 1)); // 6
|
|
wam.machine_st.heap.push(heap_loc_as_cell!(11)); // 7
|
|
wam.machine_st.heap.push(list_loc_as_cell!(9));
|
|
wam.machine_st.heap.push(heap_loc_as_cell!(9));
|
|
wam.machine_st.heap.push(empty_list_as_cell!());
|
|
|
|
wam.machine_st.heap.push(attr_var_as_cell!(11)); // linked from 7.
|
|
wam.machine_st.heap.push(heap_loc_as_cell!(12));
|
|
|
|
{
|
|
let mut iter = stackless_preorder_iter(&mut wam.machine_st.heap, heap_loc_as_cell!(0));
|
|
|
|
assert_eq!(iter.next().unwrap(), list_loc_as_cell!(1));
|
|
|
|
assert_eq!(
|
|
unmark_cell_bits!(iter.next().unwrap()),
|
|
list_loc_as_cell!(4)
|
|
);
|
|
assert_eq!(
|
|
unmark_cell_bits!(iter.next().unwrap()),
|
|
list_loc_as_cell!(9)
|
|
);
|
|
assert_eq!(
|
|
unmark_cell_bits!(iter.next().unwrap()),
|
|
empty_list_as_cell!()
|
|
);
|
|
assert_eq!(
|
|
unmark_cell_bits!(iter.next().unwrap()),
|
|
heap_loc_as_cell!(9)
|
|
);
|
|
assert_eq!(
|
|
unmark_cell_bits!(iter.next().unwrap()),
|
|
atom_as_cell!(f_atom, 1)
|
|
);
|
|
assert_eq!(
|
|
unmark_cell_bits!(iter.next().unwrap()),
|
|
attr_var_as_cell!(11)
|
|
);
|
|
assert_eq!(
|
|
unmark_cell_bits!(iter.next().unwrap()),
|
|
heap_loc_as_cell!(1)
|
|
);
|
|
assert_eq!(iter.next(), None);
|
|
}
|
|
|
|
// now populate the attributes list. the iteration must not change.
|
|
let clpz_atom = atom!("clpz");
|
|
let p_atom = atom!("p");
|
|
|
|
wam.machine_st.heap.pop();
|
|
|
|
wam.machine_st.heap.push(heap_loc_as_cell!(13)); // 12
|
|
wam.machine_st.heap.push(list_loc_as_cell!(14)); // 13
|
|
wam.machine_st.heap.push(str_loc_as_cell!(16)); // 14
|
|
wam.machine_st.heap.push(heap_loc_as_cell!(19)); // 15
|
|
wam.machine_st.heap.push(atom_as_cell!(clpz_atom, 2)); // 16
|
|
wam.machine_st.heap.push(atom_as_cell!(a_atom)); // 17
|
|
wam.machine_st.heap.push(atom_as_cell!(b_atom)); // 18
|
|
wam.machine_st.heap.push(list_loc_as_cell!(20)); // 19
|
|
wam.machine_st.heap.push(str_loc_as_cell!(22)); // 20
|
|
wam.machine_st.heap.push(empty_list_as_cell!()); // 21
|
|
wam.machine_st.heap.push(atom_as_cell!(p_atom, 1)); // 22
|
|
wam.machine_st.heap.push(heap_loc_as_cell!(23)); // 23
|
|
|
|
{
|
|
let mut iter = stackless_preorder_iter(&mut wam.machine_st.heap, heap_loc_as_cell!(0));
|
|
|
|
assert_eq!(iter.next().unwrap(), list_loc_as_cell!(1));
|
|
|
|
assert_eq!(
|
|
unmark_cell_bits!(iter.next().unwrap()),
|
|
list_loc_as_cell!(4)
|
|
);
|
|
assert_eq!(
|
|
unmark_cell_bits!(iter.next().unwrap()),
|
|
list_loc_as_cell!(9)
|
|
);
|
|
assert_eq!(
|
|
unmark_cell_bits!(iter.next().unwrap()),
|
|
empty_list_as_cell!()
|
|
);
|
|
assert_eq!(
|
|
unmark_cell_bits!(iter.next().unwrap()),
|
|
heap_loc_as_cell!(9)
|
|
);
|
|
assert_eq!(
|
|
unmark_cell_bits!(iter.next().unwrap()),
|
|
atom_as_cell!(f_atom, 1)
|
|
);
|
|
assert_eq!(
|
|
unmark_cell_bits!(iter.next().unwrap()),
|
|
attr_var_as_cell!(11)
|
|
);
|
|
assert_eq!(
|
|
unmark_cell_bits!(iter.next().unwrap()),
|
|
heap_loc_as_cell!(1)
|
|
);
|
|
assert_eq!(iter.next(), None);
|
|
}
|
|
|
|
assert_eq!(unmark_cell_bits!(wam.machine_st.heap[0]), list_loc_as_cell!(1));
|
|
assert_eq!(unmark_cell_bits!(wam.machine_st.heap[1]), heap_loc_as_cell!(1));
|
|
assert_eq!(unmark_cell_bits!(wam.machine_st.heap[2]), heap_loc_as_cell!(3));
|
|
assert_eq!(unmark_cell_bits!(wam.machine_st.heap[3]), list_loc_as_cell!(4));
|
|
assert_eq!(unmark_cell_bits!(wam.machine_st.heap[4]), str_loc_as_cell!(6));
|
|
assert_eq!(unmark_cell_bits!(wam.machine_st.heap[5]), heap_loc_as_cell!(8));
|
|
assert_eq!(unmark_cell_bits!(wam.machine_st.heap[6]), atom_as_cell!(f_atom, 1));
|
|
assert_eq!(unmark_cell_bits!(wam.machine_st.heap[7]), heap_loc_as_cell!(11));
|
|
assert_eq!(unmark_cell_bits!(wam.machine_st.heap[8]), list_loc_as_cell!(9));
|
|
assert_eq!(unmark_cell_bits!(wam.machine_st.heap[9]), heap_loc_as_cell!(9));
|
|
assert_eq!(unmark_cell_bits!(wam.machine_st.heap[10]), empty_list_as_cell!());
|
|
assert_eq!(unmark_cell_bits!(wam.machine_st.heap[11]), attr_var_as_cell!(11));
|
|
assert_eq!(unmark_cell_bits!(wam.machine_st.heap[12]), heap_loc_as_cell!(13));
|
|
assert_eq!(unmark_cell_bits!(wam.machine_st.heap[13]), list_loc_as_cell!(14));
|
|
assert_eq!(unmark_cell_bits!(wam.machine_st.heap[14]), str_loc_as_cell!(16));
|
|
assert_eq!(unmark_cell_bits!(wam.machine_st.heap[15]), heap_loc_as_cell!(19));
|
|
assert_eq!(unmark_cell_bits!(wam.machine_st.heap[16]), atom_as_cell!(clpz_atom, 2));
|
|
assert_eq!(unmark_cell_bits!(wam.machine_st.heap[17]), atom_as_cell!(a_atom));
|
|
assert_eq!(unmark_cell_bits!(wam.machine_st.heap[18]), atom_as_cell!(b_atom));
|
|
assert_eq!(unmark_cell_bits!(wam.machine_st.heap[19]), list_loc_as_cell!(20));
|
|
assert_eq!(unmark_cell_bits!(wam.machine_st.heap[20]), str_loc_as_cell!(22));
|
|
assert_eq!(unmark_cell_bits!(wam.machine_st.heap[21]), empty_list_as_cell!());
|
|
assert_eq!(unmark_cell_bits!(wam.machine_st.heap[22]), atom_as_cell!(p_atom, 1));
|
|
assert_eq!(unmark_cell_bits!(wam.machine_st.heap[23]), heap_loc_as_cell!(23));
|
|
|
|
wam.machine_st.heap.clear();
|
|
|
|
{
|
|
let mut iter = stackless_preorder_iter(
|
|
&mut wam.machine_st.heap,
|
|
fixnum_as_cell!(Fixnum::build_with(0))
|
|
);
|
|
|
|
assert_eq!(
|
|
unmark_cell_bits!(iter.next().unwrap()),
|
|
fixnum_as_cell!(Fixnum::build_with(0))
|
|
);
|
|
|
|
assert_eq!(iter.next(), None);
|
|
}
|
|
|
|
all_cells_unmarked(&wam.machine_st.heap);
|
|
|
|
assert_eq!(wam.machine_st.heap.len(), 0);
|
|
|
|
wam.machine_st.heap.clear();
|
|
|
|
wam.machine_st.heap.push(str_loc_as_cell!(1));
|
|
|
|
wam.machine_st.heap.push(atom_as_cell!(atom!("g"),2));
|
|
wam.machine_st.heap.push(heap_loc_as_cell!(0));
|
|
wam.machine_st.heap.push(atom_as_cell!(atom!("y")));
|
|
|
|
{
|
|
let mut iter = stackless_preorder_iter(
|
|
&mut wam.machine_st.heap,
|
|
str_loc_as_cell!(1),
|
|
);
|
|
|
|
assert_eq!(
|
|
unmark_cell_bits!(iter.next().unwrap()),
|
|
atom_as_cell!(atom!("g"),2)
|
|
);
|
|
|
|
assert_eq!(
|
|
unmark_cell_bits!(iter.next().unwrap()),
|
|
atom_as_cell!(atom!("y"))
|
|
);
|
|
|
|
assert_eq!(
|
|
unmark_cell_bits!(iter.next().unwrap()),
|
|
str_loc_as_cell!(1)
|
|
);
|
|
|
|
assert!(iter.next().is_none());
|
|
}
|
|
|
|
all_cells_unmarked(&wam.machine_st.heap);
|
|
|
|
wam.machine_st.heap.clear();
|
|
|
|
wam.machine_st.heap.push(atom_as_cell!(atom!("g"),2));
|
|
wam.machine_st.heap.push(str_loc_as_cell!(0));
|
|
wam.machine_st.heap.push(atom_as_cell!(atom!("y")));
|
|
|
|
{
|
|
let mut iter = stackless_preorder_iter(
|
|
&mut wam.machine_st.heap,
|
|
str_loc_as_cell!(0),
|
|
);
|
|
|
|
assert_eq!(
|
|
unmark_cell_bits!(iter.next().unwrap()),
|
|
atom_as_cell!(atom!("g"),2)
|
|
);
|
|
|
|
assert_eq!(
|
|
unmark_cell_bits!(iter.next().unwrap()),
|
|
atom_as_cell!(atom!("y"))
|
|
);
|
|
|
|
assert_eq!(
|
|
unmark_cell_bits!(iter.next().unwrap()),
|
|
str_loc_as_cell!(0)
|
|
);
|
|
|
|
assert!(iter.next().is_none());
|
|
}
|
|
|
|
all_cells_unmarked(&wam.machine_st.heap);
|
|
|
|
wam.machine_st.heap.clear();
|
|
|
|
wam.machine_st.heap.push(str_loc_as_cell!(1));
|
|
wam.machine_st.heap.push(atom_as_cell!(atom!("g"), 2));
|
|
wam.machine_st.heap.push(heap_loc_as_cell!(0));
|
|
wam.machine_st.heap.push(atom_as_cell!(atom!("y")));
|
|
wam.machine_st.heap.push(atom_as_cell!(atom!("="), 2));
|
|
wam.machine_st.heap.push(atom_as_cell!(atom!("X")));
|
|
wam.machine_st.heap.push(heap_loc_as_cell!(0));
|
|
wam.machine_st.heap.push(list_loc_as_cell!(8));
|
|
wam.machine_st.heap.push(str_loc_as_cell!(4));
|
|
wam.machine_st.heap.push(empty_list_as_cell!());
|
|
|
|
{
|
|
let mut iter = stackless_preorder_iter(
|
|
&mut wam.machine_st.heap,
|
|
heap_loc_as_cell!(7),
|
|
);
|
|
|
|
assert_eq!(
|
|
unmark_cell_bits!(iter.next().unwrap()),
|
|
list_loc_as_cell!(8)
|
|
);
|
|
|
|
assert_eq!(
|
|
unmark_cell_bits!(iter.next().unwrap()),
|
|
empty_list_as_cell!()
|
|
);
|
|
|
|
assert_eq!(
|
|
unmark_cell_bits!(iter.next().unwrap()),
|
|
atom_as_cell!(atom!("="), 2)
|
|
);
|
|
|
|
assert_eq!(
|
|
unmark_cell_bits!(iter.next().unwrap()),
|
|
atom_as_cell!(atom!("g"), 2)
|
|
);
|
|
|
|
assert_eq!(
|
|
unmark_cell_bits!(iter.next().unwrap()),
|
|
atom_as_cell!(atom!("y"))
|
|
);
|
|
|
|
assert_eq!(
|
|
unmark_cell_bits!(iter.next().unwrap()),
|
|
heap_loc_as_cell!(0)
|
|
);
|
|
|
|
assert_eq!(
|
|
unmark_cell_bits!(iter.next().unwrap()),
|
|
atom_as_cell!(atom!("X"))
|
|
);
|
|
|
|
assert!(iter.next().is_none());
|
|
}
|
|
|
|
all_cells_unmarked(&wam.machine_st.heap);
|
|
|
|
assert_eq!(wam.machine_st.heap[0], str_loc_as_cell!(1));
|
|
assert_eq!(wam.machine_st.heap[1], atom_as_cell!(atom!("g"), 2));
|
|
assert_eq!(wam.machine_st.heap[2], heap_loc_as_cell!(0));
|
|
assert_eq!(wam.machine_st.heap[3], atom_as_cell!(atom!("y")));
|
|
assert_eq!(wam.machine_st.heap[4], atom_as_cell!(atom!("="), 2));
|
|
assert_eq!(wam.machine_st.heap[5], atom_as_cell!(atom!("X")));
|
|
assert_eq!(wam.machine_st.heap[6], heap_loc_as_cell!(0));
|
|
assert_eq!(wam.machine_st.heap[7], list_loc_as_cell!(8));
|
|
assert_eq!(wam.machine_st.heap[8], str_loc_as_cell!(4));
|
|
assert_eq!(wam.machine_st.heap[9], empty_list_as_cell!());
|
|
|
|
wam.machine_st.heap.clear();
|
|
|
|
wam.machine_st.heap.push(atom_as_cell!(atom!("f"), 2));
|
|
wam.machine_st.heap.push(heap_loc_as_cell!(1));
|
|
wam.machine_st.heap.push(heap_loc_as_cell!(1));
|
|
|
|
{
|
|
let mut iter = stackless_preorder_iter(
|
|
&mut wam.machine_st.heap,
|
|
str_loc_as_cell!(0),
|
|
);
|
|
|
|
assert_eq!(
|
|
unmark_cell_bits!(iter.next().unwrap()),
|
|
atom_as_cell!(atom!("f"), 2)
|
|
);
|
|
|
|
assert_eq!(
|
|
unmark_cell_bits!(iter.next().unwrap()),
|
|
heap_loc_as_cell!(1)
|
|
);
|
|
|
|
assert_eq!(
|
|
unmark_cell_bits!(iter.next().unwrap()),
|
|
heap_loc_as_cell!(1)
|
|
);
|
|
|
|
assert!(iter.next().is_none());
|
|
}
|
|
|
|
assert_eq!(wam.machine_st.heap[0], atom_as_cell!(atom!("f"), 2));
|
|
assert_eq!(wam.machine_st.heap[1], heap_loc_as_cell!(1));
|
|
assert_eq!(wam.machine_st.heap[2], heap_loc_as_cell!(1));
|
|
|
|
wam.machine_st.heap.clear();
|
|
|
|
// representation of one of the heap terms as in issue #1384.
|
|
/*
|
|
wam.machine_st.heap.push(list_loc_as_cell!(7));
|
|
wam.machine_st.heap.push(heap_loc_as_cell!(0));
|
|
wam.machine_st.heap.push(list_loc_as_cell!(3));
|
|
wam.machine_st.heap.push(list_loc_as_cell!(5));
|
|
wam.machine_st.heap.push(empty_list_as_cell!());
|
|
wam.machine_st.heap.push(heap_loc_as_cell!(2));
|
|
wam.machine_st.heap.push(heap_loc_as_cell!(2));
|
|
wam.machine_st.heap.push(empty_list_as_cell!());
|
|
wam.machine_st.heap.push(heap_loc_as_cell!(3));
|
|
|
|
{
|
|
let mut iter = stackless_preorder_iter(
|
|
&mut wam.machine_st.heap,
|
|
heap_loc_as_cell!(0),
|
|
);
|
|
|
|
while let Some(_) = iter.next() {
|
|
print_heap_terms(iter.heap.iter(), 0);
|
|
println!("");
|
|
}
|
|
|
|
/*
|
|
assert_eq!(
|
|
unmark_cell_bits!(iter.next().unwrap()),
|
|
atom_as_cell!(atom!("f"), 2)
|
|
);
|
|
|
|
assert!(iter.next().is_none());
|
|
*/
|
|
}
|
|
*/
|
|
}
|
|
|
|
#[test]
|
|
fn heap_stackful_iter_tests() {
|
|
let mut wam = MockWAM::new();
|
|
|
|
let f_atom = atom!("f");
|
|
let a_atom = atom!("a");
|
|
let b_atom = atom!("b");
|
|
|
|
wam.machine_st.heap
|
|
.extend(functor!(f_atom, [atom(a_atom), atom(b_atom)]));
|
|
|
|
{
|
|
let mut iter = StackfulPreOrderHeapIter::new(&mut wam.machine_st.heap, str_loc_as_cell!(0));
|
|
|
|
assert_eq!(
|
|
unmark_cell_bits!(iter.next().unwrap()),
|
|
atom_as_cell!(f_atom, 2)
|
|
);
|
|
assert_eq!(
|
|
unmark_cell_bits!(iter.next().unwrap()),
|
|
atom_as_cell!(a_atom)
|
|
);
|
|
assert_eq!(
|
|
unmark_cell_bits!(iter.next().unwrap()),
|
|
atom_as_cell!(b_atom)
|
|
);
|
|
|
|
assert_eq!(iter.next(), None);
|
|
}
|
|
|
|
wam.machine_st.heap.clear();
|
|
|
|
wam.machine_st.heap.extend(functor!(
|
|
f_atom,
|
|
[
|
|
atom(a_atom),
|
|
atom(b_atom),
|
|
atom(a_atom),
|
|
cell(str_loc_as_cell!(0))
|
|
]
|
|
));
|
|
|
|
for _ in 0..20 {
|
|
let mut iter = StackfulPreOrderHeapIter::new(&mut wam.machine_st.heap, str_loc_as_cell!(0));
|
|
|
|
assert_eq!(
|
|
unmark_cell_bits!(iter.next().unwrap()),
|
|
atom_as_cell!(f_atom, 4)
|
|
);
|
|
assert_eq!(
|
|
unmark_cell_bits!(iter.next().unwrap()),
|
|
atom_as_cell!(a_atom)
|
|
);
|
|
assert_eq!(
|
|
unmark_cell_bits!(iter.next().unwrap()),
|
|
atom_as_cell!(b_atom)
|
|
);
|
|
assert_eq!(
|
|
unmark_cell_bits!(iter.next().unwrap()),
|
|
atom_as_cell!(a_atom)
|
|
);
|
|
|
|
assert_eq!(unmark_cell_bits!(iter.next().unwrap()), str_loc_as_cell!(0));
|
|
assert_eq!(iter.next(), None);
|
|
}
|
|
|
|
wam.machine_st.heap.clear();
|
|
|
|
{
|
|
wam.machine_st.heap.push(heap_loc_as_cell!(0));
|
|
|
|
let mut iter = StackfulPreOrderHeapIter::new(&mut wam.machine_st.heap, heap_loc_as_cell!(0));
|
|
let mut var = heap_loc_as_cell!(0);
|
|
|
|
// self-referencing variables are copied with their forwarding
|
|
// and marking bits set to true. it suffices to check only the
|
|
// forwarding bit to detect cycles of all kinds, including
|
|
// unbound/self-referencing variables.
|
|
|
|
var.set_forwarding_bit(true);
|
|
var.set_mark_bit(true);
|
|
|
|
assert_eq!(iter.next().unwrap(), var);
|
|
assert_eq!(iter.next(), None);
|
|
}
|
|
|
|
wam.machine_st.heap.clear();
|
|
|
|
{
|
|
// mutually referencing variables.
|
|
wam.machine_st.heap.push(heap_loc_as_cell!(1));
|
|
wam.machine_st.heap.push(heap_loc_as_cell!(0));
|
|
|
|
let mut iter = StackfulPreOrderHeapIter::new(&mut wam.machine_st.heap, heap_loc_as_cell!(0));
|
|
|
|
assert_eq!(
|
|
unmark_cell_bits!(iter.next().unwrap()),
|
|
heap_loc_as_cell!(0)
|
|
);
|
|
|
|
assert_eq!(iter.next(), None);
|
|
}
|
|
|
|
wam.machine_st.heap.clear();
|
|
|
|
// term is: [a, b]
|
|
wam.machine_st.heap.push(list_loc_as_cell!(1));
|
|
wam.machine_st.heap.push(atom_as_cell!(a_atom));
|
|
wam.machine_st.heap.push(list_loc_as_cell!(3));
|
|
wam.machine_st.heap.push(atom_as_cell!(b_atom));
|
|
wam.machine_st.heap.push(empty_list_as_cell!());
|
|
|
|
{
|
|
let mut iter = StackfulPreOrderHeapIter::new(&mut wam.machine_st.heap, heap_loc_as_cell!(0));
|
|
|
|
assert_eq!(
|
|
unmark_cell_bits!(iter.next().unwrap()),
|
|
list_loc_as_cell!(1)
|
|
);
|
|
assert_eq!(
|
|
unmark_cell_bits!(iter.next().unwrap()),
|
|
atom_as_cell!(a_atom)
|
|
);
|
|
assert_eq!(
|
|
unmark_cell_bits!(iter.next().unwrap()),
|
|
list_loc_as_cell!(3)
|
|
);
|
|
assert_eq!(
|
|
unmark_cell_bits!(iter.next().unwrap()),
|
|
atom_as_cell!(b_atom)
|
|
);
|
|
assert_eq!(
|
|
unmark_cell_bits!(iter.next().unwrap()),
|
|
empty_list_as_cell!()
|
|
);
|
|
|
|
assert_eq!(iter.next(), None);
|
|
}
|
|
|
|
wam.machine_st.heap.pop();
|
|
|
|
// now make the list cyclic.
|
|
wam.machine_st.heap.push(heap_loc_as_cell!(0));
|
|
|
|
{
|
|
let mut iter = StackfulPreOrderHeapIter::new(&mut wam.machine_st.heap, heap_loc_as_cell!(0));
|
|
|
|
// the cycle will be iterated twice before being detected.
|
|
assert_eq!(
|
|
unmark_cell_bits!(iter.next().unwrap()),
|
|
list_loc_as_cell!(1)
|
|
);
|
|
assert_eq!(
|
|
unmark_cell_bits!(iter.next().unwrap()),
|
|
atom_as_cell!(a_atom)
|
|
);
|
|
assert_eq!(
|
|
unmark_cell_bits!(iter.next().unwrap()),
|
|
list_loc_as_cell!(3)
|
|
);
|
|
assert_eq!(
|
|
unmark_cell_bits!(iter.next().unwrap()),
|
|
atom_as_cell!(b_atom)
|
|
);
|
|
assert_eq!(
|
|
unmark_cell_bits!(iter.next().unwrap()),
|
|
heap_loc_as_cell!(0)
|
|
);
|
|
|
|
assert_eq!(iter.next(), None);
|
|
}
|
|
|
|
{
|
|
let mut iter = StackfulPreOrderHeapIter::new(&mut wam.machine_st.heap, heap_loc_as_cell!(0));
|
|
|
|
// cut the iteration short to check that all cells are
|
|
// unmarked and unforwarded by the Drop instance of
|
|
// StackfulPreOrderHeapIter.
|
|
|
|
assert_eq!(
|
|
unmark_cell_bits!(iter.next().unwrap()),
|
|
list_loc_as_cell!(1)
|
|
);
|
|
assert_eq!(
|
|
unmark_cell_bits!(iter.next().unwrap()),
|
|
atom_as_cell!(a_atom)
|
|
);
|
|
}
|
|
|
|
all_cells_unmarked(&wam.machine_st.heap);
|
|
|
|
assert_eq!(wam.machine_st.heap[0], list_loc_as_cell!(1));
|
|
assert_eq!(wam.machine_st.heap[1], atom_as_cell!(a_atom));
|
|
assert_eq!(wam.machine_st.heap[2], list_loc_as_cell!(3));
|
|
assert_eq!(wam.machine_st.heap[3], atom_as_cell!(b_atom));
|
|
assert_eq!(wam.machine_st.heap[4], heap_loc_as_cell!(0));
|
|
|
|
wam.machine_st.heap.clear();
|
|
|
|
// first a 'dangling' partial string, later modified to be a
|
|
// two-part complete string, then a three-part cyclic string
|
|
// involving an uncompacted list of chars.
|
|
|
|
let pstr_var_cell = put_partial_string(&mut wam.machine_st.heap, "abc ", &mut wam.machine_st.atom_tbl);
|
|
let pstr_cell = wam.machine_st.heap[pstr_var_cell.get_value() as usize];
|
|
|
|
{
|
|
let mut iter = StackfulPreOrderHeapIter::new(&mut wam.machine_st.heap, heap_loc_as_cell!(0));
|
|
|
|
assert_eq!(unmark_cell_bits!(iter.next().unwrap()), pstr_cell);
|
|
assert_eq!(
|
|
unmark_cell_bits!(iter.next().unwrap()),
|
|
heap_loc_as_cell!(1),
|
|
);
|
|
|
|
assert_eq!(iter.next(), None);
|
|
}
|
|
|
|
// here
|
|
|
|
wam.machine_st.heap.pop();
|
|
wam.machine_st.heap.push(heap_loc_as_cell!(2));
|
|
|
|
let pstr_second_var_cell = put_partial_string(&mut wam.machine_st.heap, "def", &mut wam.machine_st.atom_tbl);
|
|
let pstr_second_cell = wam.machine_st.heap[pstr_second_var_cell.get_value() as usize];
|
|
|
|
{
|
|
let mut iter = stackful_preorder_iter(&mut wam.machine_st.heap, heap_loc_as_cell!(0));
|
|
|
|
assert_eq!(unmark_cell_bits!(iter.next().unwrap()), pstr_cell);
|
|
assert_eq!(unmark_cell_bits!(iter.next().unwrap()), pstr_second_cell);
|
|
assert_eq!(
|
|
unmark_cell_bits!(iter.next().unwrap()),
|
|
heap_loc_as_cell!(3),
|
|
);
|
|
|
|
assert_eq!(iter.next(), None);
|
|
}
|
|
|
|
wam.machine_st.heap.pop();
|
|
wam.machine_st.heap.push(pstr_loc_as_cell!(wam.machine_st.heap.len() + 1));
|
|
|
|
wam.machine_st.heap.push(pstr_offset_as_cell!(0));
|
|
wam.machine_st.heap.push(fixnum_as_cell!(Fixnum::build_with(0i64)));
|
|
|
|
{
|
|
let mut iter = stackful_preorder_iter(&mut wam.machine_st.heap, pstr_loc_as_cell!(0));
|
|
let pstr_offset_cell = pstr_offset_as_cell!(0);
|
|
|
|
// pstr_offset_cell.set_forwarding_bit(true);
|
|
|
|
assert_eq!(unmark_cell_bits!(iter.next().unwrap()), pstr_cell);
|
|
assert_eq!(unmark_cell_bits!(iter.next().unwrap()), pstr_second_cell);
|
|
assert_eq!(unmark_cell_bits!(iter.next().unwrap()), pstr_offset_cell);
|
|
assert_eq!(iter.next().unwrap(), fixnum_as_cell!(Fixnum::build_with(0i64)));
|
|
|
|
assert_eq!(iter.next(), None);
|
|
}
|
|
|
|
/*
|
|
{
|
|
let mut iter = HeapPStrIter::new(&wam.machine_st.heap, 0);
|
|
let string: String = iter.chars().collect();
|
|
assert_eq!(string, "abc def");
|
|
}
|
|
*/
|
|
|
|
wam.machine_st.heap.pop();
|
|
wam.machine_st.heap.push(fixnum_as_cell!(Fixnum::build_with(1i64)));
|
|
|
|
{
|
|
let mut iter = stackful_preorder_iter(&mut wam.machine_st.heap, pstr_loc_as_cell!(0));
|
|
let pstr_offset_cell = pstr_offset_as_cell!(0);
|
|
|
|
// pstr_offset_cell.set_forwarding_bit(true);
|
|
|
|
assert_eq!(unmark_cell_bits!(iter.next().unwrap()), pstr_cell);
|
|
assert_eq!(unmark_cell_bits!(iter.next().unwrap()), pstr_second_cell);
|
|
|
|
assert_eq!(unmark_cell_bits!(iter.next().unwrap()), pstr_offset_cell);
|
|
assert_eq!(iter.next().unwrap(), fixnum_as_cell!(Fixnum::build_with(1i64)));
|
|
|
|
let h = iter.focus();
|
|
|
|
assert_eq!(h, 5);
|
|
assert_eq!(unmark_cell_bits!(iter.heap[4]), pstr_offset_as_cell!(0));
|
|
assert_eq!(unmark_cell_bits!(iter.heap[5]), fixnum_as_cell!(Fixnum::build_with(1i64)));
|
|
|
|
assert_eq!(iter.next(), None);
|
|
}
|
|
|
|
wam.machine_st.heap.clear();
|
|
|
|
let functor = functor!(f_atom, [atom(a_atom), atom(b_atom), atom(b_atom)]);
|
|
|
|
wam.machine_st.heap.push(list_loc_as_cell!(1));
|
|
wam.machine_st.heap.push(str_loc_as_cell!(5));
|
|
wam.machine_st.heap.push(list_loc_as_cell!(3));
|
|
wam.machine_st.heap.push(str_loc_as_cell!(5));
|
|
wam.machine_st.heap.push(empty_list_as_cell!());
|
|
|
|
wam.machine_st.heap.extend(functor);
|
|
|
|
{
|
|
let mut iter = StackfulPreOrderHeapIter::new(&mut wam.machine_st.heap, heap_loc_as_cell!(0));
|
|
|
|
assert_eq!(
|
|
unmark_cell_bits!(iter.next().unwrap()),
|
|
list_loc_as_cell!(1)
|
|
);
|
|
|
|
assert_eq!(
|
|
unmark_cell_bits!(iter.next().unwrap()),
|
|
atom_as_cell!(f_atom, 3)
|
|
);
|
|
assert_eq!(
|
|
unmark_cell_bits!(iter.next().unwrap()),
|
|
atom_as_cell!(a_atom)
|
|
);
|
|
assert_eq!(
|
|
unmark_cell_bits!(iter.next().unwrap()),
|
|
atom_as_cell!(b_atom)
|
|
);
|
|
assert_eq!(
|
|
unmark_cell_bits!(iter.next().unwrap()),
|
|
atom_as_cell!(b_atom)
|
|
);
|
|
|
|
assert_eq!(
|
|
unmark_cell_bits!(iter.next().unwrap()),
|
|
list_loc_as_cell!(3)
|
|
);
|
|
|
|
assert_eq!(
|
|
unmark_cell_bits!(iter.next().unwrap()),
|
|
atom_as_cell!(f_atom, 3)
|
|
);
|
|
assert_eq!(
|
|
unmark_cell_bits!(iter.next().unwrap()),
|
|
atom_as_cell!(a_atom)
|
|
);
|
|
assert_eq!(
|
|
unmark_cell_bits!(iter.next().unwrap()),
|
|
atom_as_cell!(b_atom)
|
|
);
|
|
assert_eq!(
|
|
unmark_cell_bits!(iter.next().unwrap()),
|
|
atom_as_cell!(b_atom)
|
|
);
|
|
|
|
assert_eq!(
|
|
unmark_cell_bits!(iter.next().unwrap()),
|
|
empty_list_as_cell!()
|
|
);
|
|
|
|
assert_eq!(iter.next(), None);
|
|
}
|
|
|
|
all_cells_unmarked(&wam.machine_st.heap);
|
|
|
|
wam.machine_st.heap[4] = list_loc_as_cell!(1);
|
|
|
|
{
|
|
let mut iter = stackful_preorder_iter(&mut wam.machine_st.heap, heap_loc_as_cell!(0));
|
|
|
|
assert_eq!(
|
|
unmark_cell_bits!(iter.next().unwrap()),
|
|
list_loc_as_cell!(1)
|
|
);
|
|
|
|
assert_eq!(
|
|
unmark_cell_bits!(iter.next().unwrap()),
|
|
atom_as_cell!(f_atom, 3)
|
|
);
|
|
assert_eq!(
|
|
unmark_cell_bits!(iter.next().unwrap()),
|
|
atom_as_cell!(a_atom)
|
|
);
|
|
assert_eq!(
|
|
unmark_cell_bits!(iter.next().unwrap()),
|
|
atom_as_cell!(b_atom)
|
|
);
|
|
assert_eq!(
|
|
unmark_cell_bits!(iter.next().unwrap()),
|
|
atom_as_cell!(b_atom)
|
|
);
|
|
|
|
assert_eq!(
|
|
unmark_cell_bits!(iter.next().unwrap()),
|
|
list_loc_as_cell!(3)
|
|
);
|
|
|
|
assert_eq!(
|
|
unmark_cell_bits!(iter.next().unwrap()),
|
|
atom_as_cell!(f_atom, 3)
|
|
);
|
|
assert_eq!(
|
|
unmark_cell_bits!(iter.next().unwrap()),
|
|
atom_as_cell!(a_atom)
|
|
);
|
|
assert_eq!(
|
|
unmark_cell_bits!(iter.next().unwrap()),
|
|
atom_as_cell!(b_atom)
|
|
);
|
|
assert_eq!(
|
|
unmark_cell_bits!(iter.next().unwrap()),
|
|
atom_as_cell!(b_atom)
|
|
);
|
|
|
|
let mut link_back = list_loc_as_cell!(1);
|
|
|
|
link_back.set_forwarding_bit(true);
|
|
link_back.set_mark_bit(true);
|
|
|
|
assert_eq!(iter.next().unwrap(), link_back);
|
|
|
|
assert_eq!(iter.next(), None);
|
|
}
|
|
|
|
all_cells_unmarked(&wam.machine_st.heap);
|
|
|
|
wam.machine_st.heap.clear();
|
|
|
|
wam.machine_st.heap.push(list_loc_as_cell!(1));
|
|
wam.machine_st.heap.push(list_loc_as_cell!(1));
|
|
wam.machine_st.heap.push(list_loc_as_cell!(1));
|
|
|
|
{
|
|
let mut iter = StackfulPreOrderHeapIter::new(
|
|
&mut wam.machine_st.heap,
|
|
heap_loc_as_cell!(0),
|
|
);
|
|
|
|
let mut cyclic_link = list_loc_as_cell!(1);
|
|
|
|
cyclic_link.set_forwarding_bit(true);
|
|
cyclic_link.set_mark_bit(true);
|
|
|
|
assert_eq!(
|
|
unmark_cell_bits!(iter.next().unwrap()),
|
|
list_loc_as_cell!(1)
|
|
);
|
|
assert_eq!(
|
|
unmark_cell_bits!(iter.next().unwrap()),
|
|
list_loc_as_cell!(1)
|
|
);
|
|
assert_eq!(iter.next().unwrap(), cyclic_link);
|
|
|
|
assert_eq!(iter.next(), None);
|
|
}
|
|
|
|
all_cells_unmarked(&wam.machine_st.heap);
|
|
|
|
wam.machine_st.heap.clear();
|
|
|
|
wam.machine_st.heap.push(pstr_as_cell!(atom!("a string")));
|
|
wam.machine_st.heap.push(empty_list_as_cell!());
|
|
|
|
{
|
|
let mut iter = stackful_preorder_iter(
|
|
&mut wam.machine_st.heap,
|
|
heap_loc_as_cell!(0),
|
|
);
|
|
|
|
assert_eq!(
|
|
unmark_cell_bits!(iter.next().unwrap()),
|
|
pstr_as_cell!(atom!("a string"))
|
|
);
|
|
|
|
assert_eq!(
|
|
iter.next().unwrap(),
|
|
empty_list_as_cell!()
|
|
);
|
|
|
|
assert_eq!(iter.next(), None);
|
|
}
|
|
|
|
all_cells_unmarked(&wam.machine_st.heap);
|
|
|
|
wam.machine_st.heap.clear();
|
|
|
|
wam.machine_st.heap.push(str_loc_as_cell!(1));
|
|
wam.machine_st.heap.push(atom_as_cell!(atom!("g"), 2));
|
|
wam.machine_st.heap.push(heap_loc_as_cell!(0));
|
|
wam.machine_st.heap.push(atom_as_cell!(atom!("y")));
|
|
wam.machine_st.heap.push(atom_as_cell!(atom!("="), 2));
|
|
wam.machine_st.heap.push(atom_as_cell!(atom!("X")));
|
|
wam.machine_st.heap.push(heap_loc_as_cell!(0));
|
|
wam.machine_st.heap.push(list_loc_as_cell!(8));
|
|
wam.machine_st.heap.push(str_loc_as_cell!(4));
|
|
wam.machine_st.heap.push(empty_list_as_cell!());
|
|
|
|
{
|
|
let mut iter = stackful_preorder_iter(
|
|
&mut wam.machine_st.heap,
|
|
heap_loc_as_cell!(0),
|
|
);
|
|
|
|
assert_eq!(
|
|
unmark_cell_bits!(iter.next().unwrap()),
|
|
atom_as_cell!(atom!("g"), 2)
|
|
);
|
|
|
|
assert_eq!(
|
|
unmark_cell_bits!(iter.next().unwrap()),
|
|
heap_loc_as_cell!(0)
|
|
);
|
|
|
|
assert_eq!(
|
|
unmark_cell_bits!(iter.next().unwrap()),
|
|
atom_as_cell!(atom!("y"))
|
|
);
|
|
|
|
assert!(iter.next().is_none());
|
|
}
|
|
}
|
|
|
|
#[test]
|
|
fn heap_stackful_post_order_iter() {
|
|
let mut wam = MockWAM::new();
|
|
|
|
let f_atom = atom!("f");
|
|
let a_atom = atom!("a");
|
|
let b_atom = atom!("b");
|
|
|
|
wam.machine_st.heap
|
|
.extend(functor!(f_atom, [atom(a_atom), atom(b_atom)]));
|
|
|
|
{
|
|
let mut iter = stackful_post_order_iter(&mut wam.machine_st.heap, str_loc_as_cell!(0));
|
|
|
|
assert_eq!(
|
|
unmark_cell_bits!(iter.next().unwrap()),
|
|
atom_as_cell!(a_atom)
|
|
);
|
|
assert_eq!(
|
|
unmark_cell_bits!(iter.next().unwrap()),
|
|
atom_as_cell!(b_atom)
|
|
);
|
|
assert_eq!(
|
|
unmark_cell_bits!(iter.next().unwrap()),
|
|
atom_as_cell!(f_atom, 2)
|
|
);
|
|
|
|
assert_eq!(iter.next(), None);
|
|
}
|
|
|
|
wam.machine_st.heap.clear();
|
|
|
|
wam.machine_st.heap.extend(functor!(
|
|
f_atom,
|
|
[
|
|
atom(a_atom),
|
|
atom(b_atom),
|
|
atom(a_atom),
|
|
cell(str_loc_as_cell!(0))
|
|
]
|
|
));
|
|
|
|
for _ in 0..20 { // 0000 {
|
|
let mut iter = stackful_post_order_iter(&mut wam.machine_st.heap, str_loc_as_cell!(0));
|
|
|
|
assert_eq!(
|
|
unmark_cell_bits!(iter.next().unwrap()),
|
|
atom_as_cell!(a_atom)
|
|
);
|
|
assert_eq!(
|
|
unmark_cell_bits!(iter.next().unwrap()),
|
|
atom_as_cell!(b_atom)
|
|
);
|
|
assert_eq!(
|
|
unmark_cell_bits!(iter.next().unwrap()),
|
|
atom_as_cell!(a_atom)
|
|
);
|
|
|
|
assert_eq!(unmark_cell_bits!(iter.next().unwrap()), str_loc_as_cell!(0));
|
|
|
|
assert_eq!(
|
|
unmark_cell_bits!(iter.next().unwrap()),
|
|
atom_as_cell!(f_atom, 4)
|
|
);
|
|
|
|
assert_eq!(iter.next(), None);
|
|
}
|
|
|
|
wam.machine_st.heap.clear();
|
|
|
|
{
|
|
wam.machine_st.heap.push(heap_loc_as_cell!(0));
|
|
|
|
let mut iter = stackful_post_order_iter(&mut wam.machine_st.heap, heap_loc_as_cell!(0));
|
|
let mut var = heap_loc_as_cell!(0);
|
|
|
|
// self-referencing variables are copied with their forwarding
|
|
// and marking bits set to true. it suffices to check only the
|
|
// forwarding bit to detect cycles of all kinds, including
|
|
// unbound/self-referencing variables.
|
|
|
|
var.set_forwarding_bit(true);
|
|
var.set_mark_bit(true);
|
|
|
|
assert_eq!(iter.next().unwrap(), var);
|
|
assert_eq!(iter.next(), None);
|
|
}
|
|
|
|
wam.machine_st.heap.clear();
|
|
|
|
{
|
|
// mutually referencing variables.
|
|
wam.machine_st.heap.push(heap_loc_as_cell!(1));
|
|
wam.machine_st.heap.push(heap_loc_as_cell!(0));
|
|
|
|
let mut iter = stackful_post_order_iter(&mut wam.machine_st.heap, heap_loc_as_cell!(0));
|
|
|
|
assert_eq!(
|
|
unmark_cell_bits!(iter.next().unwrap()),
|
|
heap_loc_as_cell!(0)
|
|
);
|
|
|
|
assert_eq!(iter.next(), None);
|
|
}
|
|
|
|
wam.machine_st.heap.clear();
|
|
|
|
// term is: [a, b]
|
|
wam.machine_st.heap.push(list_loc_as_cell!(1));
|
|
wam.machine_st.heap.push(atom_as_cell!(a_atom));
|
|
wam.machine_st.heap.push(list_loc_as_cell!(3));
|
|
wam.machine_st.heap.push(atom_as_cell!(b_atom));
|
|
wam.machine_st.heap.push(empty_list_as_cell!());
|
|
|
|
{
|
|
let mut iter = stackful_post_order_iter(&mut wam.machine_st.heap, heap_loc_as_cell!(0));
|
|
|
|
assert_eq!(
|
|
unmark_cell_bits!(iter.next().unwrap()),
|
|
atom_as_cell!(a_atom)
|
|
);
|
|
assert_eq!(
|
|
unmark_cell_bits!(iter.next().unwrap()),
|
|
atom_as_cell!(b_atom)
|
|
);
|
|
assert_eq!(
|
|
unmark_cell_bits!(iter.next().unwrap()),
|
|
empty_list_as_cell!()
|
|
);
|
|
assert_eq!(
|
|
unmark_cell_bits!(iter.next().unwrap()),
|
|
list_loc_as_cell!(3)
|
|
);
|
|
assert_eq!(
|
|
unmark_cell_bits!(iter.next().unwrap()),
|
|
list_loc_as_cell!(1)
|
|
);
|
|
|
|
assert_eq!(iter.next(), None);
|
|
}
|
|
|
|
wam.machine_st.heap.pop();
|
|
|
|
// now make the list cyclic.
|
|
wam.machine_st.heap.push(heap_loc_as_cell!(0));
|
|
|
|
{
|
|
let mut iter = stackful_post_order_iter(&mut wam.machine_st.heap, heap_loc_as_cell!(0));
|
|
|
|
// the cycle will be iterated twice before being detected.
|
|
assert_eq!(
|
|
unmark_cell_bits!(iter.next().unwrap()),
|
|
atom_as_cell!(a_atom)
|
|
);
|
|
assert_eq!(
|
|
unmark_cell_bits!(iter.next().unwrap()),
|
|
atom_as_cell!(b_atom)
|
|
);
|
|
assert_eq!(
|
|
unmark_cell_bits!(iter.next().unwrap()),
|
|
heap_loc_as_cell!(0)
|
|
);
|
|
assert_eq!(
|
|
unmark_cell_bits!(iter.next().unwrap()),
|
|
list_loc_as_cell!(3)
|
|
);
|
|
assert_eq!(
|
|
unmark_cell_bits!(iter.next().unwrap()),
|
|
list_loc_as_cell!(1)
|
|
);
|
|
|
|
assert_eq!(iter.next(), None);
|
|
}
|
|
|
|
{
|
|
let mut iter = stackful_post_order_iter(
|
|
&mut wam.machine_st.heap,
|
|
heap_loc_as_cell!(0),
|
|
);
|
|
|
|
// cut the iteration short to check that all cells are
|
|
// unmarked and unforwarded by the Drop instance of
|
|
// StackfulPreOrderHeapIter.
|
|
|
|
assert_eq!(
|
|
unmark_cell_bits!(iter.next().unwrap()),
|
|
atom_as_cell!(a_atom)
|
|
);
|
|
assert_eq!(
|
|
unmark_cell_bits!(iter.next().unwrap()),
|
|
atom_as_cell!(b_atom)
|
|
);
|
|
}
|
|
|
|
all_cells_unmarked(&wam.machine_st.heap);
|
|
|
|
assert_eq!(wam.machine_st.heap[0], list_loc_as_cell!(1));
|
|
assert_eq!(wam.machine_st.heap[1], atom_as_cell!(a_atom));
|
|
assert_eq!(wam.machine_st.heap[2], list_loc_as_cell!(3));
|
|
assert_eq!(wam.machine_st.heap[3], atom_as_cell!(b_atom));
|
|
assert_eq!(wam.machine_st.heap[4], heap_loc_as_cell!(0));
|
|
|
|
wam.machine_st.heap.clear();
|
|
|
|
// first a 'dangling' partial string, later modified to be a
|
|
// two-part complete string, then a three-part cyclic string
|
|
// involving an uncompacted list of chars.
|
|
|
|
let pstr_var_cell = put_partial_string(&mut wam.machine_st.heap, "abc ", &mut wam.machine_st.atom_tbl);
|
|
let pstr_cell = wam.machine_st.heap[pstr_var_cell.get_value() as usize];
|
|
|
|
{
|
|
let mut iter = stackful_post_order_iter(&mut wam.machine_st.heap, pstr_loc_as_cell!(0));
|
|
|
|
assert_eq!(
|
|
unmark_cell_bits!(iter.next().unwrap()),
|
|
heap_loc_as_cell!(1),
|
|
);
|
|
|
|
assert_eq!(unmark_cell_bits!(iter.next().unwrap()), pstr_cell);
|
|
|
|
assert_eq!(iter.next(), None);
|
|
}
|
|
|
|
wam.machine_st.heap.pop();
|
|
wam.machine_st.heap.push(pstr_loc_as_cell!(2));
|
|
|
|
let pstr_second_var_cell = put_partial_string(&mut wam.machine_st.heap, "def", &mut wam.machine_st.atom_tbl);
|
|
let pstr_second_cell = wam.machine_st.heap[pstr_second_var_cell.get_value() as usize];
|
|
|
|
{
|
|
let mut iter = stackful_post_order_iter(&mut wam.machine_st.heap, pstr_loc_as_cell!(0));
|
|
|
|
assert_eq!(
|
|
unmark_cell_bits!(iter.next().unwrap()),
|
|
heap_loc_as_cell!(3),
|
|
);
|
|
assert_eq!(unmark_cell_bits!(iter.next().unwrap()), pstr_second_cell);
|
|
assert_eq!(unmark_cell_bits!(iter.next().unwrap()), pstr_cell);
|
|
|
|
assert_eq!(iter.next(), None);
|
|
}
|
|
|
|
wam.machine_st.heap.pop();
|
|
wam.machine_st.heap.push(pstr_loc_as_cell!(wam.machine_st.heap.len() + 1));
|
|
|
|
wam.machine_st.heap.push(pstr_offset_as_cell!(0));
|
|
wam.machine_st.heap.push(fixnum_as_cell!(Fixnum::build_with(0i64)));
|
|
|
|
{
|
|
let mut iter = stackful_post_order_iter(&mut wam.machine_st.heap, pstr_loc_as_cell!(0));
|
|
|
|
assert_eq!(iter.next().unwrap(), fixnum_as_cell!(Fixnum::build_with(0i64)));
|
|
assert_eq!(unmark_cell_bits!(iter.next().unwrap()), pstr_offset_as_cell!(0));
|
|
|
|
assert_eq!(unmark_cell_bits!(iter.next().unwrap()), pstr_second_cell);
|
|
assert_eq!(unmark_cell_bits!(iter.next().unwrap()), pstr_cell);
|
|
|
|
assert_eq!(iter.next(), None);
|
|
}
|
|
|
|
wam.machine_st.heap.pop();
|
|
wam.machine_st.heap.push(fixnum_as_cell!(Fixnum::build_with(1i64)));
|
|
|
|
{
|
|
let mut iter = stackful_post_order_iter(&mut wam.machine_st.heap, pstr_loc_as_cell!(0));
|
|
|
|
assert_eq!(iter.next().unwrap(), fixnum_as_cell!(Fixnum::build_with(1i64)));
|
|
assert_eq!(unmark_cell_bits!(iter.next().unwrap()), pstr_offset_as_cell!(0));
|
|
|
|
assert_eq!(unmark_cell_bits!(iter.next().unwrap()), pstr_second_cell);
|
|
assert_eq!(unmark_cell_bits!(iter.next().unwrap()), pstr_cell);
|
|
|
|
assert_eq!(iter.next(), None);
|
|
}
|
|
|
|
wam.machine_st.heap.clear();
|
|
|
|
let functor = functor!(f_atom, [atom(a_atom), atom(b_atom), atom(b_atom)]);
|
|
|
|
wam.machine_st.heap.push(list_loc_as_cell!(1));
|
|
wam.machine_st.heap.push(str_loc_as_cell!(5));
|
|
wam.machine_st.heap.push(list_loc_as_cell!(3));
|
|
wam.machine_st.heap.push(str_loc_as_cell!(5));
|
|
wam.machine_st.heap.push(empty_list_as_cell!());
|
|
|
|
wam.machine_st.heap.extend(functor);
|
|
|
|
{
|
|
let mut iter = stackful_post_order_iter(&mut wam.machine_st.heap, heap_loc_as_cell!(0));
|
|
|
|
assert_eq!(
|
|
unmark_cell_bits!(iter.next().unwrap()),
|
|
atom_as_cell!(a_atom)
|
|
);
|
|
assert_eq!(
|
|
unmark_cell_bits!(iter.next().unwrap()),
|
|
atom_as_cell!(b_atom)
|
|
);
|
|
assert_eq!(
|
|
unmark_cell_bits!(iter.next().unwrap()),
|
|
atom_as_cell!(b_atom)
|
|
);
|
|
|
|
assert_eq!(
|
|
unmark_cell_bits!(iter.next().unwrap()),
|
|
atom_as_cell!(f_atom, 3)
|
|
);
|
|
|
|
assert_eq!(
|
|
unmark_cell_bits!(iter.next().unwrap()),
|
|
atom_as_cell!(a_atom)
|
|
);
|
|
assert_eq!(
|
|
unmark_cell_bits!(iter.next().unwrap()),
|
|
atom_as_cell!(b_atom)
|
|
);
|
|
assert_eq!(
|
|
unmark_cell_bits!(iter.next().unwrap()),
|
|
atom_as_cell!(b_atom)
|
|
);
|
|
assert_eq!(
|
|
unmark_cell_bits!(iter.next().unwrap()),
|
|
atom_as_cell!(f_atom, 3)
|
|
);
|
|
|
|
assert_eq!(
|
|
unmark_cell_bits!(iter.next().unwrap()),
|
|
empty_list_as_cell!()
|
|
);
|
|
|
|
assert_eq!(
|
|
unmark_cell_bits!(iter.next().unwrap()),
|
|
list_loc_as_cell!(3)
|
|
);
|
|
|
|
assert_eq!(
|
|
unmark_cell_bits!(iter.next().unwrap()),
|
|
list_loc_as_cell!(1)
|
|
);
|
|
|
|
assert_eq!(iter.next(), None);
|
|
}
|
|
|
|
all_cells_unmarked(&wam.machine_st.heap);
|
|
|
|
wam.machine_st.heap[4] = list_loc_as_cell!(1);
|
|
|
|
{
|
|
let mut iter = stackful_post_order_iter(&mut wam.machine_st.heap, heap_loc_as_cell!(0));
|
|
|
|
assert_eq!(
|
|
unmark_cell_bits!(iter.next().unwrap()),
|
|
atom_as_cell!(a_atom)
|
|
);
|
|
assert_eq!(
|
|
unmark_cell_bits!(iter.next().unwrap()),
|
|
atom_as_cell!(b_atom)
|
|
);
|
|
assert_eq!(
|
|
unmark_cell_bits!(iter.next().unwrap()),
|
|
atom_as_cell!(b_atom)
|
|
);
|
|
|
|
assert_eq!(
|
|
unmark_cell_bits!(iter.next().unwrap()),
|
|
atom_as_cell!(f_atom, 3)
|
|
);
|
|
|
|
assert_eq!(
|
|
unmark_cell_bits!(iter.next().unwrap()),
|
|
atom_as_cell!(a_atom)
|
|
);
|
|
assert_eq!(
|
|
unmark_cell_bits!(iter.next().unwrap()),
|
|
atom_as_cell!(b_atom)
|
|
);
|
|
assert_eq!(
|
|
unmark_cell_bits!(iter.next().unwrap()),
|
|
atom_as_cell!(b_atom)
|
|
);
|
|
|
|
assert_eq!(
|
|
unmark_cell_bits!(iter.next().unwrap()),
|
|
atom_as_cell!(f_atom, 3)
|
|
);
|
|
|
|
let mut link_back = list_loc_as_cell!(1);
|
|
|
|
link_back.set_forwarding_bit(true);
|
|
link_back.set_mark_bit(true);
|
|
|
|
assert_eq!(iter.next().unwrap(), link_back);
|
|
|
|
assert_eq!(
|
|
unmark_cell_bits!(iter.next().unwrap()),
|
|
list_loc_as_cell!(3)
|
|
);
|
|
|
|
assert_eq!(
|
|
unmark_cell_bits!(iter.next().unwrap()),
|
|
list_loc_as_cell!(1)
|
|
);
|
|
|
|
assert_eq!(iter.next(), None);
|
|
}
|
|
|
|
all_cells_unmarked(&wam.machine_st.heap);
|
|
wam.machine_st.heap.clear();
|
|
}
|
|
|
|
#[test]
|
|
fn heap_stackless_post_order_iter() {
|
|
let mut wam = MockWAM::new();
|
|
|
|
let f_atom = atom!("f");
|
|
let a_atom = atom!("a");
|
|
let b_atom = atom!("b");
|
|
|
|
wam.machine_st.heap.extend(functor!(f_atom, [atom(a_atom), atom(b_atom)]));
|
|
|
|
{
|
|
let mut iter = stackless_post_order_iter(
|
|
&mut wam.machine_st.heap,
|
|
str_loc_as_cell!(0),
|
|
);
|
|
|
|
assert_eq!(
|
|
unmark_cell_bits!(iter.next().unwrap()),
|
|
atom_as_cell!(b_atom)
|
|
);
|
|
assert_eq!(
|
|
unmark_cell_bits!(iter.next().unwrap()),
|
|
atom_as_cell!(a_atom)
|
|
);
|
|
assert_eq!(
|
|
unmark_cell_bits!(iter.next().unwrap()),
|
|
atom_as_cell!(f_atom, 2)
|
|
);
|
|
|
|
assert_eq!(iter.next(), None);
|
|
}
|
|
|
|
wam.machine_st.heap.clear();
|
|
|
|
wam.machine_st.heap.extend(functor!(
|
|
f_atom,
|
|
[
|
|
atom(a_atom),
|
|
atom(b_atom),
|
|
atom(a_atom),
|
|
cell(str_loc_as_cell!(0))
|
|
]
|
|
));
|
|
|
|
for _ in 0..20 {
|
|
let mut iter = stackless_post_order_iter(&mut wam.machine_st.heap, str_loc_as_cell!(0));
|
|
|
|
assert_eq!(unmark_cell_bits!(iter.next().unwrap()), str_loc_as_cell!(0));
|
|
|
|
assert_eq!(
|
|
unmark_cell_bits!(iter.next().unwrap()),
|
|
atom_as_cell!(a_atom)
|
|
);
|
|
assert_eq!(
|
|
unmark_cell_bits!(iter.next().unwrap()),
|
|
atom_as_cell!(b_atom)
|
|
);
|
|
assert_eq!(
|
|
unmark_cell_bits!(iter.next().unwrap()),
|
|
atom_as_cell!(a_atom)
|
|
);
|
|
|
|
assert_eq!(
|
|
unmark_cell_bits!(iter.next().unwrap()),
|
|
atom_as_cell!(f_atom, 4)
|
|
);
|
|
|
|
assert_eq!(iter.next(), None);
|
|
}
|
|
|
|
wam.machine_st.heap.clear();
|
|
|
|
{
|
|
wam.machine_st.heap.push(heap_loc_as_cell!(0));
|
|
|
|
let mut iter = stackless_post_order_iter(&mut wam.machine_st.heap, heap_loc_as_cell!(0));
|
|
|
|
assert_eq!(
|
|
unmark_cell_bits!(iter.next().unwrap()),
|
|
heap_loc_as_cell!(0)
|
|
);
|
|
assert_eq!(iter.next(), None);
|
|
}
|
|
|
|
wam.machine_st.heap.clear();
|
|
|
|
{
|
|
// mutually referencing variables.
|
|
wam.machine_st.heap.push(heap_loc_as_cell!(1));
|
|
wam.machine_st.heap.push(heap_loc_as_cell!(0));
|
|
|
|
let mut iter = stackless_post_order_iter(&mut wam.machine_st.heap, heap_loc_as_cell!(0));
|
|
|
|
assert_eq!(
|
|
unmark_cell_bits!(iter.next().unwrap()),
|
|
heap_loc_as_cell!(1)
|
|
);
|
|
|
|
assert_eq!(
|
|
unmark_cell_bits!(iter.next().unwrap()),
|
|
heap_loc_as_cell!(0)
|
|
);
|
|
|
|
assert_eq!(iter.next(), None);
|
|
}
|
|
|
|
wam.machine_st.heap.clear();
|
|
|
|
// term is: [a, b]
|
|
wam.machine_st.heap.push(list_loc_as_cell!(1));
|
|
wam.machine_st.heap.push(atom_as_cell!(a_atom));
|
|
wam.machine_st.heap.push(list_loc_as_cell!(3));
|
|
wam.machine_st.heap.push(atom_as_cell!(b_atom));
|
|
wam.machine_st.heap.push(empty_list_as_cell!());
|
|
|
|
{
|
|
let mut iter = stackless_post_order_iter(&mut wam.machine_st.heap, heap_loc_as_cell!(0));
|
|
|
|
assert_eq!(
|
|
unmark_cell_bits!(iter.next().unwrap()),
|
|
empty_list_as_cell!()
|
|
);
|
|
assert_eq!(
|
|
unmark_cell_bits!(iter.next().unwrap()),
|
|
atom_as_cell!(b_atom)
|
|
);
|
|
assert_eq!(
|
|
unmark_cell_bits!(iter.next().unwrap()),
|
|
list_loc_as_cell!(3)
|
|
);
|
|
assert_eq!(
|
|
unmark_cell_bits!(iter.next().unwrap()),
|
|
atom_as_cell!(a_atom)
|
|
);
|
|
assert_eq!(
|
|
unmark_cell_bits!(iter.next().unwrap()),
|
|
list_loc_as_cell!(1)
|
|
);
|
|
|
|
assert_eq!(iter.next(), None);
|
|
}
|
|
|
|
wam.machine_st.heap.pop();
|
|
|
|
// now make the list cyclic.
|
|
wam.machine_st.heap.push(heap_loc_as_cell!(0));
|
|
|
|
{
|
|
let mut iter = stackless_post_order_iter(&mut wam.machine_st.heap, heap_loc_as_cell!(0));
|
|
|
|
// the cycle will be iterated twice before being detected.
|
|
assert_eq!(
|
|
unmark_cell_bits!(iter.next().unwrap()),
|
|
heap_loc_as_cell!(0)
|
|
);
|
|
assert_eq!(
|
|
unmark_cell_bits!(iter.next().unwrap()),
|
|
atom_as_cell!(b_atom)
|
|
);
|
|
assert_eq!(
|
|
unmark_cell_bits!(iter.next().unwrap()),
|
|
list_loc_as_cell!(3)
|
|
);
|
|
assert_eq!(
|
|
unmark_cell_bits!(iter.next().unwrap()),
|
|
atom_as_cell!(a_atom)
|
|
);
|
|
assert_eq!(
|
|
unmark_cell_bits!(iter.next().unwrap()),
|
|
list_loc_as_cell!(1)
|
|
);
|
|
|
|
assert_eq!(iter.next(), None);
|
|
}
|
|
|
|
{
|
|
let mut iter = stackless_post_order_iter(&mut wam.machine_st.heap, heap_loc_as_cell!(0));
|
|
|
|
// cut the iteration short to check that all cells are
|
|
// unmarked and unforwarded by the Drop instance of
|
|
// StacklessPreOrderHeapIter.
|
|
|
|
assert_eq!(
|
|
unmark_cell_bits!(iter.next().unwrap()),
|
|
heap_loc_as_cell!(0)
|
|
);
|
|
assert_eq!(
|
|
unmark_cell_bits!(iter.next().unwrap()),
|
|
atom_as_cell!(b_atom)
|
|
);
|
|
}
|
|
|
|
all_cells_unmarked(&wam.machine_st.heap);
|
|
|
|
assert_eq!(wam.machine_st.heap[0], list_loc_as_cell!(1));
|
|
assert_eq!(wam.machine_st.heap[1], atom_as_cell!(a_atom));
|
|
assert_eq!(wam.machine_st.heap[2], list_loc_as_cell!(3));
|
|
assert_eq!(wam.machine_st.heap[3], atom_as_cell!(b_atom));
|
|
assert_eq!(wam.machine_st.heap[4], heap_loc_as_cell!(0));
|
|
|
|
wam.machine_st.heap.clear();
|
|
|
|
// first a 'dangling' partial string, later modified to be a
|
|
// two-part complete string, then a three-part cyclic string
|
|
// involving an uncompacted list of chars.
|
|
|
|
let pstr_var_cell = put_partial_string(&mut wam.machine_st.heap, "abc ", &mut wam.machine_st.atom_tbl);
|
|
let pstr_cell = wam.machine_st.heap[pstr_var_cell.get_value() as usize];
|
|
|
|
{
|
|
let mut iter = stackless_post_order_iter(&mut wam.machine_st.heap, pstr_loc_as_cell!(0));
|
|
|
|
assert_eq!(
|
|
unmark_cell_bits!(iter.next().unwrap()),
|
|
heap_loc_as_cell!(1),
|
|
);
|
|
|
|
assert_eq!(unmark_cell_bits!(iter.next().unwrap()), pstr_cell);
|
|
|
|
assert_eq!(iter.next(), None);
|
|
}
|
|
|
|
wam.machine_st.heap.pop();
|
|
wam.machine_st.heap.push(pstr_loc_as_cell!(2));
|
|
|
|
let pstr_second_var_cell = put_partial_string(
|
|
&mut wam.machine_st.heap,
|
|
"def",
|
|
&mut wam.machine_st.atom_tbl,
|
|
);
|
|
|
|
let pstr_second_cell = wam.machine_st.heap[pstr_second_var_cell.get_value() as usize];
|
|
|
|
{
|
|
let mut iter = stackless_post_order_iter(&mut wam.machine_st.heap, pstr_loc_as_cell!(0));
|
|
|
|
assert_eq!(
|
|
unmark_cell_bits!(iter.next().unwrap()),
|
|
heap_loc_as_cell!(3),
|
|
);
|
|
|
|
assert_eq!(unmark_cell_bits!(iter.next().unwrap()), pstr_second_cell);
|
|
assert_eq!(unmark_cell_bits!(iter.next().unwrap()), pstr_cell);
|
|
|
|
assert_eq!(iter.next(), None);
|
|
}
|
|
|
|
all_cells_unmarked(&wam.machine_st.heap);
|
|
|
|
wam.machine_st.heap.pop();
|
|
wam.machine_st.heap.push(pstr_loc_as_cell!(wam.machine_st.heap.len() + 1));
|
|
|
|
wam.machine_st.heap.push(pstr_offset_as_cell!(0));
|
|
wam.machine_st.heap.push(fixnum_as_cell!(Fixnum::build_with(0)));
|
|
|
|
{
|
|
let mut iter = stackless_post_order_iter(&mut wam.machine_st.heap, pstr_loc_as_cell!(0));
|
|
let mut pstr_loc_cell = pstr_loc_as_cell!(0);
|
|
|
|
pstr_loc_cell.set_forwarding_bit(true);
|
|
|
|
// assert_eq!(iter.next().unwrap(), fixnum_as_cell!(Fixnum::build_with(0i64)));
|
|
assert_eq!(unmark_cell_bits!(iter.next().unwrap()), pstr_offset_as_cell!(0));
|
|
assert_eq!(unmark_cell_bits!(iter.next().unwrap()), pstr_offset_as_cell!(0));
|
|
|
|
assert_eq!(unmark_cell_bits!(iter.next().unwrap()), pstr_second_cell);
|
|
assert_eq!(unmark_cell_bits!(iter.next().unwrap()), pstr_cell);
|
|
|
|
assert_eq!(iter.next(), None);
|
|
}
|
|
|
|
all_cells_unmarked(&wam.machine_st.heap);
|
|
|
|
wam.machine_st.heap.pop();
|
|
wam.machine_st.heap.push(fixnum_as_cell!(Fixnum::build_with(1)));
|
|
|
|
{
|
|
let mut iter = stackless_post_order_iter(&mut wam.machine_st.heap, pstr_loc_as_cell!(0));
|
|
|
|
//assert_eq!(iter.next().unwrap(), fixnum_as_cell!(Fixnum::build_with(1)));
|
|
assert_eq!(unmark_cell_bits!(iter.next().unwrap()), pstr_offset_as_cell!(0));
|
|
assert_eq!(unmark_cell_bits!(iter.next().unwrap()), pstr_offset_as_cell!(0));
|
|
|
|
assert_eq!(unmark_cell_bits!(iter.next().unwrap()), pstr_second_cell);
|
|
assert_eq!(unmark_cell_bits!(iter.next().unwrap()), pstr_cell);
|
|
|
|
assert_eq!(iter.next(), None);
|
|
}
|
|
|
|
wam.machine_st.heap.clear();
|
|
|
|
let functor = functor!(f_atom, [atom(a_atom), atom(b_atom), atom(b_atom)]);
|
|
|
|
wam.machine_st.heap.push(list_loc_as_cell!(1));
|
|
wam.machine_st.heap.push(str_loc_as_cell!(5));
|
|
wam.machine_st.heap.push(list_loc_as_cell!(3));
|
|
wam.machine_st.heap.push(str_loc_as_cell!(5));
|
|
wam.machine_st.heap.push(empty_list_as_cell!());
|
|
|
|
wam.machine_st.heap.extend(functor);
|
|
|
|
{
|
|
let mut iter = stackless_post_order_iter(&mut wam.machine_st.heap, heap_loc_as_cell!(0));
|
|
|
|
assert_eq!(
|
|
unmark_cell_bits!(iter.next().unwrap()),
|
|
empty_list_as_cell!()
|
|
);
|
|
|
|
assert_eq!(
|
|
unmark_cell_bits!(iter.next().unwrap()),
|
|
atom_as_cell!(b_atom)
|
|
);
|
|
assert_eq!(
|
|
unmark_cell_bits!(iter.next().unwrap()),
|
|
atom_as_cell!(b_atom)
|
|
);
|
|
assert_eq!(
|
|
unmark_cell_bits!(iter.next().unwrap()),
|
|
atom_as_cell!(a_atom)
|
|
);
|
|
|
|
assert_eq!(
|
|
unmark_cell_bits!(iter.next().unwrap()),
|
|
atom_as_cell!(f_atom, 3)
|
|
);
|
|
|
|
assert_eq!(
|
|
unmark_cell_bits!(iter.next().unwrap()),
|
|
list_loc_as_cell!(3)
|
|
);
|
|
|
|
assert_eq!(
|
|
unmark_cell_bits!(iter.next().unwrap()),
|
|
atom_as_cell!(b_atom)
|
|
);
|
|
assert_eq!(
|
|
unmark_cell_bits!(iter.next().unwrap()),
|
|
atom_as_cell!(b_atom)
|
|
);
|
|
assert_eq!(
|
|
unmark_cell_bits!(iter.next().unwrap()),
|
|
atom_as_cell!(a_atom)
|
|
);
|
|
assert_eq!(
|
|
unmark_cell_bits!(iter.next().unwrap()),
|
|
atom_as_cell!(f_atom, 3)
|
|
);
|
|
|
|
assert_eq!(
|
|
unmark_cell_bits!(iter.next().unwrap()),
|
|
list_loc_as_cell!(1)
|
|
);
|
|
|
|
assert_eq!(iter.next(), None);
|
|
}
|
|
|
|
all_cells_unmarked(&wam.machine_st.heap);
|
|
|
|
wam.machine_st.heap[4] = list_loc_as_cell!(1);
|
|
|
|
{
|
|
let mut iter = stackless_post_order_iter(&mut wam.machine_st.heap, heap_loc_as_cell!(0));
|
|
|
|
assert_eq!(
|
|
unmark_cell_bits!(iter.next().unwrap()),
|
|
atom_as_cell!(b_atom)
|
|
);
|
|
assert_eq!(
|
|
unmark_cell_bits!(iter.next().unwrap()),
|
|
atom_as_cell!(b_atom)
|
|
);
|
|
assert_eq!(
|
|
unmark_cell_bits!(iter.next().unwrap()),
|
|
atom_as_cell!(a_atom)
|
|
);
|
|
|
|
assert_eq!(
|
|
unmark_cell_bits!(iter.next().unwrap()),
|
|
atom_as_cell!(f_atom, 3)
|
|
);
|
|
|
|
assert_eq!(
|
|
unmark_cell_bits!(iter.next().unwrap()),
|
|
atom_as_cell!(b_atom)
|
|
);
|
|
assert_eq!(
|
|
unmark_cell_bits!(iter.next().unwrap()),
|
|
atom_as_cell!(b_atom)
|
|
);
|
|
assert_eq!(
|
|
unmark_cell_bits!(iter.next().unwrap()),
|
|
atom_as_cell!(a_atom)
|
|
);
|
|
|
|
assert_eq!(
|
|
unmark_cell_bits!(iter.next().unwrap()),
|
|
atom_as_cell!(f_atom, 3)
|
|
);
|
|
|
|
assert_eq!(iter.next().unwrap(), list_loc_as_cell!(1));
|
|
|
|
assert_eq!(
|
|
unmark_cell_bits!(iter.next().unwrap()),
|
|
list_loc_as_cell!(3)
|
|
);
|
|
|
|
assert_eq!(
|
|
unmark_cell_bits!(iter.next().unwrap()),
|
|
list_loc_as_cell!(1)
|
|
);
|
|
|
|
assert_eq!(iter.next(), None);
|
|
}
|
|
|
|
all_cells_unmarked(&wam.machine_st.heap);
|
|
}
|
|
}
|