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xo-parser: scaffolding eliminates exprstate::def_lhs_symbol

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This commit is contained in:
Roland Conybeare 2024-08-01 15:34:47 +10:00
commit 4e9b41645f
2 changed files with 27 additions and 45 deletions
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12
include/xo/parser/parser.hpp
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@ -6,6 +6,7 @@
#pragma once
#include "xo/expression/Expression.hpp"
#include "xo/expression/DefineExpr.hpp"
#include "xo/tokenizer/token.hpp"
#include <stack>
#include <stdexcept>
@ -47,13 +48,17 @@ namespace xo {
class exprstate {
public:
using Expression = xo::ast::Expression;
using DefineExprAccess = xo::ast::DefineExprAccess;
using exprtype = xo::ast::exprtype;
using token_type = token<char>;
using TypeDescr = xo::reflect::TypeDescr;
public:
exprstate() = default;
exprstate(exprstatetype exs_type) : exs_type_{exs_type} {}
exprstate(exprstatetype exs_type,
rp<DefineExprAccess> def_expr = nullptr)
: exs_type_{exs_type},
def_expr_{std::move(def_expr)} {}
static exprstate expect_toplevel_expression_sequence() {
return exprstate(exprstatetype::expect_toplevel_expression_sequence);
@ -132,10 +137,15 @@ namespace xo {
**/
exprstatetype exs_type_;
/** scaffold a define-expression here **/
rp<DefineExprAccess> def_expr_;
#ifdef OBSOLETE
/** e.g. foo in
* def foo : f64 = 1
**/
std::string def_lhs_symbol_;
#endif
/** e.g. f64 in
* def foo : f64 = 1
**/