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z3/src/ast/rewriter/cached_var_subst.cpp
LeeYoungJoon 0a93ff515d
Centralize and document TRACE tags using X-macros (#7657)
* Introduce X-macro-based trace tag definition
- Created trace_tags.def to centralize TRACE tag definitions
- Each tag includes a symbolic name and description
- Set up enum class TraceTag for type-safe usage in TRACE macros

* Add script to generate Markdown documentation from trace_tags.def
- Python script parses trace_tags.def and outputs trace_tags.md

* Refactor TRACE_NEW to prepend TraceTag and pass enum to is_trace_enabled

* trace: improve trace tag handling system with hierarchical tagging

- Introduce hierarchical tag-class structure: enabling a tag class activates all child tags
- Unify TRACE, STRACE, SCTRACE, and CTRACE under enum TraceTag
- Implement initial version of trace_tag.def using X(tag, tag_class, description)
  (class names and descriptions to be refined in a future update)

* trace: replace all string-based TRACE tags with enum TraceTag
- Migrated all TRACE, STRACE, SCTRACE, and CTRACE macros to use enum TraceTag values instead of raw string literals

* trace : add cstring header

* trace : Add Markdown documentation generation from trace_tags.def via mk_api_doc.py

* trace : rename macro parameter 'class' to 'tag_class' and remove Unicode comment in trace_tags.h.

* trace : Add TODO comment for future implementation of tag_class activation

* trace : Disable code related to tag_class until implementation is ready (#7663).
2025-05-28 14:31:25 +01:00

99 lines
2.7 KiB
C++

/*++
Copyright (c) 2006 Microsoft Corporation
Module Name:
cached_var_subst.cpp
Abstract:
<abstract>
Author:
Leonardo de Moura (leonardo) 2009-01-23.
Revision History:
--*/
#include "ast/rewriter/cached_var_subst.h"
#include "ast/rewriter/rewriter_def.h"
bool cached_var_subst::key_eq_proc::operator()(cached_var_subst::key * k1, cached_var_subst::key * k2) const {
if (k1->m_qa != k2->m_qa)
return false;
if (k1->m_num_bindings != k2->m_num_bindings)
return false;
for (unsigned i = 0; i < k1->m_num_bindings; i++)
if (k1->m_bindings[i] != k2->m_bindings[i])
return false;
return true;
}
cached_var_subst::cached_var_subst(ast_manager & _m):
m(_m),
m_proc(m),
m_refs(m) {
}
void cached_var_subst::reset() {
m_refs.reset();
m_instances.reset();
m_region.reset();
m_new_keys.reset();
m_key = nullptr;
}
expr** cached_var_subst::operator()(quantifier* qa, unsigned num_bindings) {
m_new_keys.reserve(num_bindings+1, 0);
m_key = m_new_keys[num_bindings];
if (m_key == nullptr)
m_key = static_cast<key*>(m_region.allocate(sizeof(key) + sizeof(expr*)*num_bindings));
m_key->m_qa = qa;
m_key->m_num_bindings = num_bindings;
return m_key->m_bindings;
}
expr_ref cached_var_subst::operator()() {
expr_ref result(m);
auto* entry = m_instances.insert_if_not_there3(m_key, nullptr);
unsigned num_bindings = m_key->m_num_bindings;
if (entry->get_data().m_key != m_key) {
SASSERT(entry->get_data().m_value != 0);
// entry was already there
m_new_keys[num_bindings] = m_key; // recycle key
result = entry->get_data().m_value;
SCTRACE(bindings, is_trace_enabled(TraceTag::coming_from_quant), tout << "(cache)\n";
for (unsigned i = 0; i < num_bindings; i++)
if (m_key->m_bindings[i])
tout << i << ": " << mk_ismt2_pp(m_key->m_bindings[i], result.m()) << ";\n";
tout.flush(););
return result;
}
SASSERT(entry->get_data().m_value == 0);
try {
result = m_proc(m_key->m_qa->get_expr(), m_key->m_num_bindings, m_key->m_bindings);
}
catch (...) {
// CMW: The var_subst reducer was interrupted and m_instances is
// in an inconsistent state; we need to remove (m_key, 0).
m_instances.remove(m_key);
throw;
}
// cache result
entry->get_data().m_value = result;
// remove key from cache
m_new_keys[num_bindings] = nullptr;
// increment reference counters
m_refs.push_back(m_key->m_qa);
for (unsigned i = 0; i < m_key->m_num_bindings; i++)
m_refs.push_back(m_key->m_bindings[i]);
m_refs.push_back(result);
return result;
}