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xo-reader: uncopy: with + exprstate.illegal_input_error()

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This commit is contained in:
Roland Conybeare 2024-08-09 13:57:42 -04:00
commit 74099cacab
5 changed files with 61 additions and 81 deletions
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34
src/reader/exprstate.cpp
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@ -320,19 +320,18 @@ namespace xo {
}
void
exprstate::on_def_token(const token_type & /*tk*/,
exprstatestack * p_stack) {
exprstate::on_def_token(const token_type & tk,
exprstatestack * p_stack)
{
constexpr bool c_debug_flag = true;
scope log(XO_DEBUG(c_debug_flag));
constexpr const char * self_name = "exprstate::on_def";
constexpr const char * c_self_name = "exprstate::on_def_token";
/* lots of illegal states */
if (!this->admits_definition())
{
throw std::runtime_error(tostr(self_name,
": unexpected keyword 'def' for parsing state",
xtag("state", *this)));
this->illegal_input_error(c_self_name, tk);
}
p_stack->push_exprstate(define_xs::def_0());
@ -358,20 +357,16 @@ namespace xo {
log && log(xtag("exstype", p_stack->top_exprstate().exs_type()));
constexpr const char * self_name = "exprstate::on_symbol";
constexpr const char * c_self_name = "exprstate::on_symbol_token";
if (!this->admits_symbol()) {
throw std::runtime_error
(tostr(self_name,
": unexpected symbol-token for parsing state",
xtag("symbol", tk),
xtag("state", *this)));
this->illegal_input_error(c_self_name, tk);
}
switch (this->exs_type_) {
case exprstatetype::expect_toplevel_expression_sequence:
throw std::runtime_error
(tostr(self_name,
(tostr(c_self_name,
": unexpected symbol-token at top-level",
" (expecting decl|def)",
xtag("symbol", tk)));
@ -442,7 +437,7 @@ namespace xo {
if (!td) {
throw std::runtime_error
(tostr(self_name,
(tostr(c_self_name,
": unknown type name",
" (expecting f64|f32|i16|i32|i64)",
xtag("typename", tk.text())));
@ -835,6 +830,17 @@ namespace xo {
os << ">";
}
void
exprstate::illegal_input_error(const char * self_name,
const token_type & tk) const
{
throw std::runtime_error
(tostr(self_name,
": unexpected input token for parsing state",
xtag("token", tk),
xtag("state", *this)));
}
// ----- exprstatestack -----
exprstate &