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xo-interpreter: scaffold interpreter read-eval-print loop

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This commit is contained in:
Roland Conybeare 2025-11-19 16:46:55 -05:00
commit 3956635920
7 changed files with 222 additions and 4 deletions
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21
xo-interpreter/src/interpreter/Schematika.cpp
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@ -4,6 +4,7 @@
**/
#include "Schematika.hpp"
#include "VirtualSchematikaMachine.hpp"
#include "xo/reader/reader.hpp"
#include <replxx.hxx>
#include <ostream>
@ -35,6 +36,8 @@ namespace xo {
private:
/** configuration **/
Config config_;
/** schematika interpreter **/
VirtualSchematikaMachine vsm_;
};
void
@ -151,7 +154,23 @@ namespace xo {
ppconfig ppc;
ppstate_standalone pps(&cout, 0, &ppc);
pps.prettyn(expr);
//pps.prettyn(expr);
// TODO:
auto [ value, scm_error ] = this->vsm_.eval(expr);
if (scm_error.is_error()) {
/* print error */
cout << "scm error: " << scm_error.what() << endl;
cout << "top-level expression: " << expr << endl;
} else {
/* print value */
cout << "scm result:" << endl;
pps.pretty(value);
}
} else if (error.is_error()) {
cout << "parsing error (detected in " << error.src_function() << "): " << endl << endl;
error.report(cout);