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xo-reader2 xo-expresion2: work on define-expressions [WIP]

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This commit is contained in:
Roland Conybeare 2026-01-19 21:25:30 -05:00
commit 516b0932ee
40 changed files with 711 additions and 72 deletions
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37
xo-reader2/src/reader2/DExprSeqState.cpp
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@ -74,13 +74,48 @@ namespace xo {
return "impossible-DExprSeqState::get_expr_str";
}
void
DExprSeqState::on_symbol_token(const Token & tk,
ParserStateMachine * p_psm)
{
switch (seqtype_) {
case exprseqtype::toplevel_interactive:
{
#ifdef NOT_YET
obj<AExpression,DVariable> var = p_psm->lookup_var(tk.text());
if (var) {
DProgressSsm::start(var, p_psm);
} else {
p_psm->unknown_variable_error("DExprSeqState::on_symbol_token",
tk,
this->get_expect_str(),
p_psm);
}
#endif
}
break;
case exprseqtype::toplevel_batch:
break;
case exprseqtype::N:
assert(false); // unreachable
break;
}
p_psm->illegal_input_on_token("DExprSeqState::on_symbol_token",
tk,
this->get_expect_str());
}
void
DExprSeqState::on_def_token(const Token & tk,
ParserStateMachine * p_psm)
{
(void)tk;
DDefineSsm::start(p_psm->parser_alloc(), p_psm);
DDefineSsm::start(p_psm->parser_alloc(),
p_psm->expr_alloc(),
p_psm);
/* keyword 'def' introduces a definition:
* def pi : f64 = 3.14159265