Roland Conybeare
0ae98c211d
git-subtree-dir: xo-reader git-subtree-mainline:dacdeb2cd7git-subtree-split:c46c0f1cc4
448 lines
14 KiB
C++
448 lines
14 KiB
C++
/* @file exprstate.cpp */
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#include "exprstate.hpp"
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#include "exprstatestack.hpp"
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#include "parserstatemachine.hpp"
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//#include "formal_arg.hpp"
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#include "xo/expression/Variable.hpp"
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#include "xo/indentlog/print/vector.hpp"
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#include <stdexcept>
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//#include "define_xs.hpp"
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//#include "progress_xs.hpp"
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//#include "paren_xs.hpp"
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//#include "expect_expr_xs.hpp"
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//#include "xo/expression/Constant.hpp"
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//#include "xo/reflect/Reflect.hpp"
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namespace xo {
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//using xo::ast::Constant;
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//using xo::reflect::Reflect;
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using xo::reflect::TypeDescr;
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namespace scm {
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const char *
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exprstatetype_descr(exprstatetype x) {
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switch (x) {
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case exprstatetype::invalid:
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return "?invalid";
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case exprstatetype::expect_toplevel_expression_sequence:
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return "expect_toplevel_expression_sequence";
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case exprstatetype::defexpr:
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return "defexpr";
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case exprstatetype::lambdaexpr:
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return "lambdaexpr";
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case exprstatetype::parenexpr:
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return "parenexpr";
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case exprstatetype::sequenceexpr:
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return "sequenceexpr";
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case exprstatetype::let1expr:
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return "let1expr";
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case exprstatetype::expect_rhs_expression:
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return "expect_rhs_expression";
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case exprstatetype::expect_symbol:
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return "expect_symbol";
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case exprstatetype::expect_type:
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return "expect_type";
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case exprstatetype::expect_formal_arglist:
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return "expect_formal_arglist";
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case exprstatetype::expect_formal:
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return "expect_formal";
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case exprstatetype::expr_progress:
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return "expr_progress";
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case exprstatetype::n_exprstatetype:
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break;
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}
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return "???";
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}
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void
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exprstate::on_def_token(const token_type & tk,
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parserstatemachine * /*p_psm*/)
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{
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this->illegal_input_error("exprstate::on_def_token", tk);
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}
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void
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exprstate::on_lambda_token(const token_type & tk,
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parserstatemachine * /*p_psm*/)
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{
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this->illegal_input_error("exprstate::on_lambda_token", tk);
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}
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void
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exprstate::on_symbol_token(const token_type & tk,
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parserstatemachine * p_psm)
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{
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constexpr bool c_debug_flag = true;
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scope log(XO_DEBUG(c_debug_flag));
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log && log(xtag("exstype", p_psm->top_exprstate().exs_type()));
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constexpr const char * c_self_name = "exprstate::on_symbol_token";
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this->illegal_input_error(c_self_name, tk);
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}
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void
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exprstate::on_typedescr(TypeDescr td,
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parserstatemachine * p_psm)
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{
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/* returning type description to something that wants it */
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constexpr bool c_debug_flag = true;
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scope log(XO_DEBUG(c_debug_flag));
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log && log(xtag("exstype",
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p_psm->top_exprstate().exs_type()));
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constexpr const char * c_self_name = "exprstate::on_typedescr";
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throw std::runtime_error(tostr(c_self_name,
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": unexpected typedescr for parsing state",
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xtag("td", td),
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xtag("state", *this)));
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}
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void
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exprstate::on_formal(const rp<Variable> & formal,
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parserstatemachine * p_psm)
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{
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/* returning type description to something that wants it */
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constexpr bool c_debug_flag = true;
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scope log(XO_DEBUG(c_debug_flag));
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log && log(xtag("exstype",
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p_psm->top_exprstate().exs_type()));
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constexpr const char * c_self_name = "exprstate::on_formal";
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throw std::runtime_error(tostr(c_self_name,
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": unexpected formal-arg for parsing state",
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xtag("formal", formal.get()),
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xtag("state", *this)));
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}
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void
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exprstate::on_formal_arglist(const std::vector<rp<Variable>> & argl,
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parserstatemachine * p_psm)
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{
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/* returning type description to something that wants it */
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constexpr bool c_debug_flag = true;
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scope log(XO_DEBUG(c_debug_flag));
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log && log(xtag("exstype",
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p_psm->top_exprstate().exs_type()));
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constexpr const char * c_self_name = "exprstate::on_formal_arglist";
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throw std::runtime_error(tostr(c_self_name,
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": unexpected formal-arg for parsing state",
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xtag("argl", argl),
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xtag("state", *this)));
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}
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void
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exprstate::on_colon_token(const token_type & tk,
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parserstatemachine * /*p_psm*/)
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{
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constexpr bool c_debug_flag = true;
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scope log(XO_DEBUG(c_debug_flag));
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constexpr const char * self_name = "exprstate::on_colon";
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this->illegal_input_error(self_name, tk);
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}
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void
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exprstate::on_comma_token(const token_type & tk,
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parserstatemachine * /*p_psm*/)
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{
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constexpr bool c_debug_flag = true;
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scope log(XO_DEBUG(c_debug_flag));
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constexpr const char * self_name = "exprstate::on_comma";
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this->illegal_input_error(self_name, tk);
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}
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void
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exprstate::on_semicolon_token(const token_type & tk,
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parserstatemachine * /*p_psm*/)
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{
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constexpr bool c_debug_flag = true;
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scope log(XO_DEBUG(c_debug_flag));
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constexpr const char * self_name = "exprstate::on_semicolon";
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this->illegal_input_error(self_name, tk);
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}
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void
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exprstate::on_singleassign_token(const token_type & tk,
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parserstatemachine * /*p_psm*/) {
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constexpr bool c_debug_flag = true;
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scope log(XO_DEBUG(c_debug_flag));
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constexpr const char * self_name = "exprstate::on_singleassign_token";
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this->illegal_input_error(self_name, tk);
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}
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void
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exprstate::on_leftparen_token(const token_type & tk,
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parserstatemachine * /*p_psm*/)
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{
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constexpr bool c_debug_flag = true;
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scope log(XO_DEBUG(c_debug_flag));
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constexpr const char * self_name = "exprstate::on_leftparen_token";
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this->illegal_input_error(self_name, tk);
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}
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void
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exprstate::on_rightparen_token(const token_type & tk,
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parserstatemachine * /*p_psm*/)
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{
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constexpr bool c_debug_flag = true;
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scope log(XO_DEBUG(c_debug_flag));
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constexpr const char * self_name = "exprstate::on_rightparen";
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this->illegal_input_error(self_name, tk);
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}
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void
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exprstate::on_leftbrace_token(const token_type & tk,
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parserstatemachine * /*p_psm*/)
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{
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constexpr bool c_debug_flag = true;
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scope log(XO_DEBUG(c_debug_flag));
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constexpr const char * self_name = "exprstate::on_leftbrace_token";
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this->illegal_input_error(self_name, tk);
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}
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void
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exprstate::on_rightbrace_token(const token_type & tk,
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parserstatemachine * /*p_psm*/)
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{
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constexpr bool c_debug_flag = true;
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scope log(XO_DEBUG(c_debug_flag));
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constexpr const char * self_name = "exprstate::on_rightbrace_token";
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this->illegal_input_error(self_name, tk);
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}
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void
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exprstate::on_operator_token(const token_type & tk,
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parserstatemachine * /*p_psm*/)
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{
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constexpr bool c_debug_flag = true;
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scope log(XO_DEBUG(c_debug_flag));
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constexpr const char * self_name = "exprstate::on_operator_token";
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this->illegal_input_error(self_name, tk);
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}
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void
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exprstate::on_f64_token(const token_type & tk,
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parserstatemachine * /*p_psm*/)
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{
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constexpr bool c_debug_flag = true;
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scope log(XO_DEBUG(c_debug_flag));
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constexpr const char * self_name = "exprstate::on_f64";
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this->illegal_input_error(self_name, tk);
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}
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void
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exprstate::on_input(const token_type & tk,
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parserstatemachine * p_psm)
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{
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constexpr bool c_debug_flag = true;
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scope log(XO_DEBUG(c_debug_flag));
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log && log(xtag("tk", tk));
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log && log(xtag("state", *this));
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log && log(xtag("psm", *p_psm));
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switch (tk.tk_type()) {
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case tokentype::tk_def:
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this->on_def_token(tk, p_psm);
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return;
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case tokentype::tk_lambda:
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this->on_lambda_token(tk, p_psm);
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return;
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case tokentype::tk_i64:
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assert(false);
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return;
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case tokentype::tk_f64:
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this->on_f64_token(tk, p_psm);
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return;
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case tokentype::tk_string:
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assert(false);
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return;
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case tokentype::tk_symbol:
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this->on_symbol_token(tk, p_psm);
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return;
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case tokentype::tk_leftparen:
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this->on_leftparen_token(tk, p_psm);
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return;
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case tokentype::tk_rightparen:
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this->on_rightparen_token(tk, p_psm);
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return;
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case tokentype::tk_leftbracket:
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case tokentype::tk_rightbracket:
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assert(false);
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break;
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case tokentype::tk_leftbrace:
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this->on_leftbrace_token(tk, p_psm);
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return;
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case tokentype::tk_rightbrace:
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this->on_rightbrace_token(tk, p_psm);
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return;
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case tokentype::tk_leftangle:
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case tokentype::tk_rightangle:
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case tokentype::tk_dot:
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assert(false);
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return;
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case tokentype::tk_comma:
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this->on_comma_token(tk, p_psm);
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return;
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case tokentype::tk_colon:
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this->on_colon_token(tk, p_psm);
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return;
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case tokentype::tk_doublecolon:
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assert(false);
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return;
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case tokentype::tk_semicolon:
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this->on_semicolon_token(tk, p_psm);
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return;
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case tokentype::tk_singleassign:
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this->on_singleassign_token(tk, p_psm);
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return;
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case tokentype::tk_assign:
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case tokentype::tk_yields:
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case tokentype::tk_plus:
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case tokentype::tk_minus:
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case tokentype::tk_star:
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case tokentype::tk_slash:
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this->on_operator_token(tk, p_psm);
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return;
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case tokentype::tk_type:
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case tokentype::tk_if:
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case tokentype::tk_let:
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case tokentype::tk_in:
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case tokentype::tk_end:
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assert(false);
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return;
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case tokentype::tk_invalid:
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case tokentype::n_tokentype:
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assert(false);
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return;
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}
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assert(false);
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}
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void
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exprstate::on_expr(ref::brw<Expression> expr,
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parserstatemachine * /*p_psm*/)
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{
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constexpr bool c_debug_flag = true;
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scope log(XO_DEBUG(c_debug_flag));
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log && log(xtag("exstype", this->exs_type_),
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xtag("expr", expr));
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assert(false);
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} /*on_expr*/
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void
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exprstate::on_expr_with_semicolon(ref::brw<Expression> expr,
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parserstatemachine * /*p_psm*/)
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{
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constexpr bool c_debug_flag = true;
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scope log(XO_DEBUG(c_debug_flag));
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const char * c_self_name = "exprstate::on_expr_with_semicolon";
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log && log(xtag("exstype", this->exs_type_),
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xtag("expr", expr));
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throw std::runtime_error
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(tostr(c_self_name,
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": unexpected expression for parsing state",
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xtag("expr", expr),
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xtag("state", *this)));
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assert(false);
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} /*on_expr_with_semicolon*/
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void
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exprstate::on_symbol(const std::string & symbol_name,
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parserstatemachine * /*p_psm*/)
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{
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/* unreachable - derived class that can receive
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* will override this method
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*/
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constexpr bool c_debug_flag = true;
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scope log(XO_DEBUG(c_debug_flag));
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log && log(xtag("exstype", this->exs_type_),
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xtag("symbol_name", symbol_name));
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assert(false);
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}
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void
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exprstate::print(std::ostream & os) const {
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os << "<exprstate"
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<< xtag("this", (void*)this)
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<< xtag("type", exs_type_);
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os << ">";
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}
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void
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exprstate::illegal_input_error(const char * self_name,
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const token_type & tk) const
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{
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throw std::runtime_error
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(tostr(self_name,
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": unexpected input token for parsing state",
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xtag("token", tk),
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xtag("state", *this)));
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}
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} /*namespace scm*/
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} /*namespace xo*/
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/* end exprstate.cpp */
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