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xo-reader: wip: expect_expr looks up symbols

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This commit is contained in:
Roland Conybeare 2024-08-19 18:33:54 -04:00
commit 50dd94e354
1 changed files with 21 additions and 4 deletions
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25
src/reader/expect_expr_xs.cpp
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@ -59,8 +59,8 @@ namespace xo {
}
void
expect_expr_xs::on_symbol_token(const token_type & /*tk*/,
parserstatemachine * /*p_psm*/)
expect_expr_xs::on_symbol_token(const token_type & tk,
parserstatemachine * p_psm)
{
/* todo: treat symbol as variable name */
@ -75,9 +75,26 @@ namespace xo {
* and {(2), (3)} (symbol is function call)
*/
/* have to do pop first, before sending symbol to
* the o.g. symbol-requester
rp<Variable> var = p_psm->lookup_var(tk.text());
if (!var) {
throw std::runtime_error
(tostr("expect_expr_xs::on_symbol_token",
": unknown symbol",
xtag("name", tk.text())));
}
/* e.g.
* def pi = 3.14159265;
* def mypi = pi;
* ^
* def pi2 = pi * 2;
* ^
* def y = foo(pi2);
* ^
*/
progress_xs::start(var, p_psm);
#ifdef NOT_YET
p_stack->push_exprstate(exprstate(exprstatetype::expr_progress,
Variable::make(name, type)));