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xo-reader2: ParserStateMachine w/ separate allocator

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This commit is contained in:
Roland Conybeare 2026-01-18 20:37:15 -05:00
commit 39fa1f7c9f
4 changed files with 24 additions and 11 deletions
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7
xo-reader2/include/xo/reader2/ParserStateMachine.hpp
View file

@ -31,15 +31,16 @@ namespace xo {
using DArena = xo::mm::DArena;
public:
ParserStateMachine(const ArenaConfig & config);
ParserStateMachine(const ArenaConfig & config,
obj<AAllocator> * expr_alloc);
/** @defgroup scm-parserstatemachine-accessors accessor methods **/
///@{
bool debug_flag() const noexcept { return debug_flag_; }
ParserStack * stack() const noexcept { return stack_; }
obj<AAllocator> * expr_alloc() const noexcept { return expr_alloc_; }
const ParserResult & result() const noexcept { return result_; }
obj<AAllocator> expr_alloc() const noexcept { return expr_alloc_; }
/** true iff state machine is currently idle (at top-level) **/
bool is_at_toplevel() const noexcept;
@ -133,7 +134,7 @@ namespace xo {
* scenario, where top-level Expressions can be discarded
* once compiled.
**/
obj<AAllocator> expr_alloc_;
obj<AAllocator> * expr_alloc_ = nullptr;
/** current output from parser **/
ParserResult result_;

8
xo-reader2/include/xo/reader2/SchematikaParser.hpp
View file

@ -8,6 +8,7 @@
#include "ParserStateMachine.hpp"
#include "ParserResult.hpp"
#include <xo/tokenizer2/Token.hpp>
#include <xo/alloc2/Allocator.hpp>
namespace xo {
namespace scm {
@ -153,6 +154,7 @@ namespace xo {
class SchematikaParser {
public:
using ArenaConfig = xo::mm::ArenaConfig;
using AAllocator = xo::mm::AAllocator;
using token_type = Token;
public:
@ -160,9 +162,13 @@ namespace xo {
* parser is ready to receive tokens via @ref include_token
*
* @p config arena configuration for parser memory
* @p expr_alloc allocator for schematika expressions.
* Probably shared with execution.
* @p debug_flag true to enable debug logging
**/
SchematikaParser(const ArenaConfig & config, bool debug_flag);
SchematikaParser(const ArenaConfig & config,
obj<AAllocator> * expr_alloc,
bool debug_flag);
bool debug_flag() const { return debug_flag_; }

9
xo-reader2/src/reader2/ParserStateMachine.cpp
View file

@ -16,9 +16,10 @@ namespace xo {
using xo::facet::with_facet;
namespace scm {
ParserStateMachine::ParserStateMachine(const ArenaConfig & config)
ParserStateMachine::ParserStateMachine(const ArenaConfig & config,
obj<AAllocator> * expr_alloc)
: parser_alloc_{DArena::map(config)},
expr_alloc_{with_facet<AAllocator>::mkobj(&parser_alloc_)},
expr_alloc_{expr_alloc},
debug_flag_{config.debug_flag_}
{
}
@ -176,7 +177,9 @@ namespace xo {
xtag("ssm", ssm_name),
xtag("via", "ParserStateMachine::illegal_input_on_token"));
auto errmsg = DString::from_view(expr_alloc_,
assert(expr_alloc_);
auto errmsg = DString::from_view(*expr_alloc_,
std::string_view(errmsg_string));
this->capture_error(ssm_name, errmsg);

11
xo-reader2/src/reader2/SchematikaParser.cpp
View file

@ -11,14 +11,17 @@
#include <stdexcept>
namespace xo {
using xo::mm::AAllocator;
using xo::tostr;
using xo::xtag;
namespace scm {
// ----- SchematikaParser -----
SchematikaParser::SchematikaParser(const ArenaConfig & config, bool debug_flag)
: psm_{config},
SchematikaParser::SchematikaParser(const ArenaConfig & config,
obj<AAllocator> * expr_alloc,
bool debug_flag)
: psm_{config, expr_alloc},
debug_flag_{debug_flag}
{
}
@ -35,13 +38,13 @@ namespace xo {
void
SchematikaParser::begin_interactive_session() {
DExprSeqState::establish_interactive(psm_.expr_alloc(), &psm_);
DExprSeqState::establish_interactive(*(psm_.expr_alloc()), &psm_);
}
void
SchematikaParser::begin_translation_unit() {
DExprSeqState::establish_batch(psm_.expr_alloc(), &psm_);
DExprSeqState::establish_batch(*(psm_.expr_alloc()), &psm_);
}
const ParserResult &