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xo-reader: refactor: demote exprstate.gen_expr to leaves that care

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This commit is contained in:
Roland Conybeare 2024-08-09 12:58:11 -04:00
commit b813e55194
5 changed files with 13 additions and 27 deletions
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29
include/xo/reader/exprstate.hpp
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@ -56,34 +56,23 @@ namespace xo {
public:
exprstate() = default;
exprstate(exprstatetype exs_type,
rp<Expression> candidate_expr)
: exs_type_{exs_type},
gen_expr_{std::move(candidate_expr)} {}
exprstate(exprstatetype exs_type)
: exs_type_{exs_type}
{}
virtual ~exprstate() = default;
static std::unique_ptr<exprstate> expect_toplevel_expression_sequence() {
return std::make_unique<exprstate>(exprstate(exprstatetype::expect_toplevel_expression_sequence, nullptr));
return std::make_unique<exprstate>(exprstate(exprstatetype::expect_toplevel_expression_sequence));
}
static std::unique_ptr<exprstate> expect_rhs_expression() {
return std::make_unique<exprstate>(exprstate(exprstatetype::expect_rhs_expression, nullptr));
return std::make_unique<exprstate>(exprstate(exprstatetype::expect_rhs_expression));
}
static std::unique_ptr<exprstate> expect_symbol() {
return std::make_unique<exprstate>(exprstate(exprstatetype::expect_symbol, nullptr));
return std::make_unique<exprstate>(exprstate(exprstatetype::expect_symbol));
}
static std::unique_ptr<exprstate> expect_type() {
return std::make_unique<exprstate>(exprstate(exprstatetype::expect_type, nullptr));
return std::make_unique<exprstate>(exprstate(exprstatetype::expect_type));
}
#ifdef RELOCATED
static std::unique_ptr<exprstate> make_expr_progress(rp<Expression> expr) {
return std::make_unique<exprstate>(exprstate(exprstatetype::expr_progress, expr));
}
#endif
#ifdef RELOCATED
static std::unique_ptr<exprstate> lparen_0() {
return std::make_unique<exprstate>(exprstate(exprstatetype::lparen_0, nullptr));
}
#endif
exprstatetype exs_type() const { return exs_type_; }
@ -144,10 +133,8 @@ namespace xo {
rp<Expression> * p_emit_expr);
protected:
/** explicit subtype: identifies derived class **/
exprstatetype exs_type_;
/** generic expression **/
rp<Expression> gen_expr_;
}; /*exprstate*/
inline std::ostream &