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xo-interpreter2: refactor to setup vsm utest + repl

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This commit is contained in:
Roland Conybeare 2026-02-02 10:53:28 -05:00
commit a71060bb75
4 changed files with 86 additions and 1 deletions
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24
include/xo/interpreter2/VirtualSchematikaMachine.hpp
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@ -14,6 +14,23 @@
namespace xo {
namespace scm {
/** similar to @ref xo::scm::ReaderResult **/
struct VsmResult {
using AGCObject = xo::mm::AGCObject;
using span_type = xo::mm::span<const char>;
bool is_tk_error() const { return tk_error_.is_error(); }
/** result of evaluating first expression encountered in input **/
obj<AGCObject> value_;
/** unconsumed portion of input span **/
span_type remaining_input_;
/** {src_function, error_description, input_state, error_pos} **/
TokenizerError tk_error_;
};
/** @class VirtualSchematikaMachine
* @brief virtual machine for schematika
**/
@ -23,10 +40,17 @@ namespace xo {
using Stack = void *;
using AAllocator = xo::mm::AAllocator;
using AGCObject = xo::mm::AGCObject;
using span_type = xo::mm::span<const char>;
public:
VirtualSchematikaMachine(const VsmConfig & config);
/** consume input @p input_cstr **/
VsmResult read_eval_print(span_type input_span, bool eof);
/** evaluate expression @p expr **/
std::pair<obj<AGCObject>, TokenizerError> eval(obj<AExpression> expr);
/** borrow calling thread to run indefinitely,
* until halt instruction
**/

4
include/xo/interpreter2/VsmConfig.hpp
View file

@ -10,11 +10,13 @@
namespace xo {
namespace scm {
/** Configuration for virtual schematika machine
/** Configuration for virtual schematika machine
**/
struct VsmConfig {
using X1CollectorConfig = xo::mm::X1CollectorConfig;
VsmConfig() = default;
/** reader configuration **/
ReaderConfig rdr_config_;
/** Configuration for allocator/collector.