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xo-reader2 stack: parenthesized expressions [WIP]

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This commit is contained in:
Roland Conybeare 2026-02-10 15:14:40 -05:00
commit d65eb54102
24 changed files with 1095 additions and 35 deletions
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26
src/reader2/DExpectExprSsm.cpp
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@ -8,6 +8,7 @@
#include "SyntaxStateMachine.hpp"
#include "ssm/ISyntaxStateMachine_DProgressSsm.hpp"
#include "DSequenceSsm.hpp"
#include "LambdaSsm.hpp"
#include "syntaxstatetype.hpp"
#include <xo/expression2/Variable.hpp>
#include <xo/expression2/Constant.hpp>
@ -138,6 +139,10 @@ namespace xo {
this->on_bool_token(tk, p_psm);
return;
case tokentype::tk_lambda:
this->on_lambda_token(tk, p_psm);
return;
// all the not-yet handled cases
case tokentype::tk_invalid:
case tokentype::tk_if:
@ -165,7 +170,6 @@ namespace xo {
case tokentype::tk_cmpeq:
case tokentype::tk_cmpne:
case tokentype::tk_type:
case tokentype::tk_lambda:
case tokentype::tk_then:
case tokentype::tk_else:
case tokentype::tk_let:
@ -379,6 +383,15 @@ namespace xo {
p_psm);
}
void
DExpectExprSsm::on_lambda_token(const Token & tk,
ParserStateMachine * p_psm)
{
(void)tk;
DLambdaSsm::start(p_psm);
}
void
DExpectExprSsm::on_parsed_expression(obj<AExpression> expr,
ParserStateMachine * p_psm)
@ -412,17 +425,6 @@ namespace xo {
}
#ifdef NOT_YET
void
expect_expr_xs::on_lambda_token(const token_type & /*tk*/,
parserstatemachine * p_psm)
{
scope log(XO_DEBUG(p_psm->debug_flag()));
//constexpr const char * self_name = "exprstate::on_leftparen";
lambda_xs::start(p_psm);
}
void
expect_expr_xs::on_if_token(const token_type & /*tk*/,
parserstatemachine * p_psm)