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|
%type SYMBOL {std::string *} str
%type SYMBOL_UC {std::string *} str
%type SYMBOL_LC {std::string *} str
%type BLOCK {std::string *} str
%type STRING {std::string *} str
%type CHAR {char} c
%type rule {solar::rule_t *}
%type rhs {std::pair<std::vector<solar::symbol_t>, std::vector<std::string>> *}
%type action {std::string *}
%type symbol {solar::symbol_t *}
%type term {solar::symbol_t *}
%type varname {std::string *}
%header {
#include "grammar.hpp"
}
%extra_arg {__attribute__((unused)) solar::grammar_t *} grammar
grammar |=;
grammar |= grammar directive;
directive |= rule(rule) {
if (grammar->rules.empty()) {
solar::item_t init("");
init.get_rhs().push_back(solar::symbol_t::make_nonterm(rule->item.get_lhs().c_str()));
grammar->rules.emplace_back(solar::rule_t {std::move(init), std::vector<std::string>(), std::string()});
}
grammar->rules.push_back(*rule);
delete rule;
}
directive |= "%type" SYMBOL_LC(nonterm) BLOCK(type) {
grammar->nonterm_types.insert(std::make_pair(*nonterm, *type));
delete nonterm;
delete type;
}
directive |= "%type" term(term) BLOCK(type) varname(name) {
grammar->term_types.insert(std::make_pair(*term, std::make_pair(*type, *name)));
delete term;
delete type;
delete name;
}
directive |= "%source" BLOCK(block) {
grammar->source_block = *block;
delete block;
}
directive |= "%header" BLOCK(block) {
grammar->header_block = *block;
delete block;
}
directive |= "%extra_arg" BLOCK(type) varname(name) {
grammar->extra_args.push_back(std::make_pair(*type, *name));
delete type;
delete name;
}
rule |= SYMBOL_LC(lhs) "|=" rhs(rhs) action(action) {
auto *ret = new solar::rule_t {solar::item_t(*lhs, rhs->first), rhs->second, *action};
delete lhs;
delete rhs;
delete action;
return ret;
}
rhs |= {
return new std::pair<std::vector<solar::symbol_t>, std::vector<std::string>>();
}
rhs |= rhs(rhs) symbol(sym) {
rhs->first.push_back(*sym);
rhs->second.emplace_back();
delete sym;
return rhs;
}
rhs |= rhs(rhs) symbol(sym) '(' varname(var) ')' {
rhs->first.push_back(*sym);
rhs->second.push_back(*var);
delete sym;
delete var;
return rhs;
}
rhs |= rhs(rhs) STRING(str) {
for (char c : *str) {
rhs->first.push_back(solar::symbol_t::make_char(c));
rhs->second.emplace_back();
}
delete str;
return rhs;
}
action |= ';' {
return new std::string;
}
action |= BLOCK(v) {
return v;
}
symbol |= term(v) {
return v;
}
symbol |= SYMBOL_LC(v) {
solar::symbol_t *ret = new solar::symbol_t(solar::symbol_t::make_nonterm(*v));
delete v;
return ret;
}
term |= SYMBOL_UC(v) {
solar::symbol_t *ret = new solar::symbol_t(solar::symbol_t::make_term(*v));
delete v;
return ret;
}
term |= CHAR(v) {
return new solar::symbol_t(solar::symbol_t::make_char(v));
}
varname |= SYMBOL_LC(v) {
return v;
}
varname |= SYMBOL_UC(v) {
return v;
}
varname |= SYMBOL(v) {
return v;
}
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