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%namespace solar
%header {
#include "grammar.hpp"
}
%source {
namespace solar {
typedef std::pair<std::string, bool> var_t;
typedef std::vector<var_t> vars_t;
typedef std::pair<std::vector<solar::symbol_t>, vars_t> rhs_t;
}
}
%extra_arg {__attribute__((unused)) grammar_t *} grammar
%type SYMBOL {std::string *} str
%destructor SYMBOL delete
%type SYMBOL_UC {std::string *} str
%destructor SYMBOL_UC delete
%type BLOCK {std::string *} str
%destructor BLOCK delete
%type SQBLOCK {std::string *} str
%destructor SQBLOCK delete
%type STRING {std::string *} str
%destructor STRING delete
%type CHAR {unsigned char} c
grammar |=;
grammar |= grammar directive;
directive |= "%type" SYMBOL(nonterm) BLOCK(type) {
grammar->nonterm_types.insert({*nonterm, *type});
}
directive |= "%type" term(term) BLOCK(type) csymbol(name) {
grammar->term_types.insert({*term, {*type, *name}});
}
directive |= "%destructor" symbol(sym) csymbol(name) {
grammar->destructors.insert({*sym, *name});
}
directive |= "%namespace" namespace(ns) {
grammar->ns = *ns;
}
directive |= "%source" BLOCK(block) {
grammar->source_block = *block;
}
directive |= "%header" BLOCK(block) {
grammar->header_block = *block;
}
directive |= "%extra_arg" BLOCK(type) csymbol(name) {
grammar->extra_args.emplace_back(*type, *name);
}
directive |= SYMBOL(lhs) "|=" rhs(rhs) action(action) {
grammar->add_rule(item_t(*lhs, rhs->first), rhs->second, *action);
}
directive |= SYMBOL(lhs) "|=" '(' CHAR(c1) "..." CHAR(c2) ')' action(action) {
for (unsigned int c = c1; c <= c2; c++)
grammar->add_rule(item_t(*lhs, {symbol_t::make_char(c)}), vars_t(1), *action);
}
%type rhs {rhs_t *}
%destructor rhs delete
rhs |= [new rhs_t]
rhs |= rhs(=rhs) symbol(sym) variable(var) {
rhs->first.push_back(*sym);
rhs->second.push_back(*var);
return rhs;
}
rhs |= rhs(=rhs) STRING(str) {
for (char c : *str) {
rhs->first.push_back(symbol_t::make_char(c));
rhs->second.emplace_back();
}
return rhs;
}
%type variable {var_t *}
%destructor variable delete
variable |= [new var_t]
variable |= '(' consume(consume) csymbol(var) ')'
[new var_t(*var, consume)]
%type consume {bool}
consume |= [false]
consume |= '=' [true]
%type action {std::string *}
%destructor action delete
action |= ';' [new std::string]
action |= BLOCK(=v) [v]
action |= SQBLOCK(v) [new std::string("return " + *v + ";")]
%type namespace {std::vector<std::string> *}
%destructor namespace delete
namespace |= csymbol(v) [new std::vector<std::string> {*v}]
namespace |= namespace(=ns) "::" csymbol(v) {
ns->push_back(*v);
return ns;
}
%type symbol {symbol_t *}
%destructor symbol delete
symbol |= SYMBOL(v) [new symbol_t(symbol_t::make_nonterm(*v))]
symbol |= term(=v) [v]
%type term {symbol_t *}
%destructor term delete
term |= SYMBOL_UC(v) [new symbol_t(symbol_t::make_term(*v))]
term |= CHAR(v) [new symbol_t(symbol_t::make_char(v))]
%type csymbol {std::string *}
%destructor csymbol delete
csymbol |= SYMBOL_UC(=v) [v]
csymbol |= SYMBOL(=v) [v]
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