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xo-interpreter2 stack: work on variable references [WIP]

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This commit is contained in:
Roland Conybeare 2026-02-05 10:44:11 -05:00
commit 370e52a149
21 changed files with 542 additions and 22 deletions
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41
xo-reader2/src/reader2/DExpectExprSsm.cpp
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@ -3,23 +3,18 @@
* @author Roland Conybeare, Jan 2026
**/
#include "DExpectExprSsm.hpp"
#include "ExpectExprSsm.hpp"
#include "ParserStateMachine.hpp"
#include "SyntaxStateMachine.hpp"
#include "ssm/ISyntaxStateMachine_DExpectExprSsm.hpp"
#include "ssm/ISyntaxStateMachine_DProgressSsm.hpp"
#include "DSequenceSsm.hpp"
#include "syntaxstatetype.hpp"
#include <xo/expression2/DConstant.hpp>
#include <xo/expression2/detail/IExpression_DConstant.hpp>
#include <xo/object2/DBoolean.hpp>
#include <xo/object2/boolean/IGCObject_DBoolean.hpp>
#include <xo/object2/DInteger.hpp>
#include <xo/object2/number/IGCObject_DInteger.hpp>
#include <xo/object2/DFloat.hpp>
#include <xo/object2/number/IGCObject_DFloat.hpp>
#include <xo/object2/DString.hpp>
#include <xo/object2/string/IGCObject_DString.hpp>
#include <xo/expression2/Variable.hpp>
#include <xo/expression2/Constant.hpp>
#include <xo/object2/Boolean.hpp>
#include <xo/object2/Integer.hpp>
#include <xo/object2/Float.hpp>
#include <xo/object2/String.hpp>
#include <xo/gc/GCObject.hpp>
#include <xo/facet/facet_implementation.hpp>
@ -196,7 +191,27 @@ namespace xo {
DExpectExprSsm::on_symbol_token(const Token & tk,
ParserStateMachine * p_psm)
{
Super::on_token(tk, p_psm);
scope log(XO_DEBUG(p_psm->debug_flag()));
log && log(xtag("tk", tk));
const DVariable * var = p_psm->lookup_variable(tk.text());
if (!var) {
p_psm->error_unbound_variable(ssm_classname(),
tk.text());
}
// examples of possible continuations from symbol foo
// foo ; // (1) foo is entire rvalue expression
// foo + ... // (2) foo begin operator expression
// foo(..); // (3) foo begin apply function
//
//
DProgressSsm::start(p_psm->parser_alloc(),
obj<AExpression,DVariable>(const_cast<DVariable *>(var)),
p_psm);
}
#ifdef NOT_YET