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xo-parser: simplify: drop exprir::td

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This commit is contained in:
Roland Conybeare 2024-08-01 13:37:08 +10:00
commit 18f3280525
2 changed files with 51 additions and 48 deletions
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59
src/parser/parser.cpp
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@ -41,9 +41,6 @@ namespace xo {
exprir::print(std::ostream & os) const {
os << "<exprir"
<< xtag("type", xir_type_);
//<< xtag("symbol_name", symbol_name_);
if (td_)
os << xtag("td", td_->short_name());
os << ">";
}
@ -339,9 +336,7 @@ namespace xo {
}
p_stack->pop_exprstate();
p_stack->top_exprstate().on_exprir
(exprir(exprirtype::typedescr, td), p_stack, p_emit_expr);
//return expraction::pop(exprir(exprirtype::typedescr, td));
p_stack->top_exprstate().on_typedescr(td, p_stack, p_emit_expr);
return;
}
@ -353,6 +348,47 @@ namespace xo {
}
}
void
exprstate::on_typedescr(TypeDescr td,
exprstatestack * /*p_stack*/,
rp<Expression> * /*p_emit_expr*/)
{
switch(this->exs_type_) {
case exprstatetype::expect_toplevel_expression_sequence:
case exprstatetype::def_0:
case exprstatetype::def_1:
/* NOT IMPLEMENTED */
assert(false);
return;
case exprstatetype::def_2:
this->exs_type_ = exprstatetype::def_3;
this->def_lhs_td_ = td;
return;
case exprstatetype::def_3:
case exprstatetype::def_4:
/* NOT IMPLEMENTED */
assert(false);
return;
case exprstatetype::expect_rhs_expression:
case exprstatetype::expect_type:
case exprstatetype::expect_symbol:
/* unreachable
* (this exprstate issues pop instruction from exprstate::on_input()
*/
assert(false);
return;
case exprstatetype::invalid:
case exprstatetype::n_exprstatetype:
/* unreachable */
assert(false);
return;
}
}
void
exprstate::on_colon(exprstatestack * p_stack) {
constexpr bool c_debug_flag = true;
@ -630,19 +666,10 @@ namespace xo {
case exprstatetype::expect_toplevel_expression_sequence:
case exprstatetype::def_0:
case exprstatetype::def_1:
/* NOT IMPLEMENTED */
assert(false);
return;
case exprstatetype::def_2:
this->exs_type_ = exprstatetype::def_3;
this->def_lhs_td_ = ir.td();
return;
case exprstatetype::def_3:
/* NOT IMPLEMENTED */
assert(false);
return;
case exprstatetype::def_4:
/* NOT IMPLEMENTED */
assert(false);
return;