Add support for character terminal group rules

src/lex.cpp

@@ -309,6 +309,7 @@ int lex_t::lex(parse_token_value_t *value) {
 		case '=':
 		case '(':
 		case ')':
+		case '.':
 			token = current();
 			next(true);
 			consume(false);

src/parse.hpp

@@ -14,7 +14,7 @@ typedef enum parse_token {
 } parse_token_t;
 
 typedef struct parse_token_value {
-	char c;
+	unsigned char c;
 	std::string *str;
 } parse_token_value_t;
 

src/parse.y

@@ -15,10 +15,6 @@ static inline void free_symbol(solar::symbol_t *v) {
 	delete v;
 }
 
-static inline void free_rule(solar::rule_t *v) {
-	delete v;
-}
-
 static inline void free_rhs(rhs_t *v) {
 	delete v;
 }
@@ -40,12 +36,9 @@ static inline void free_rhs(rhs_t *v) {
 %type STRING {std::string *} str
 %destructor STRING free_string
 
-%type CHAR {char} c
+%type CHAR {unsigned char} c
 
 
-%type rule {solar::rule_t *}
-%destructor rule free_rule
-
 %type rhs {rhs_t *}
 %destructor rhs free_rhs
 
@@ -93,13 +86,17 @@ directive |= "%extra_arg" BLOCK(type) varname(name) {
 	grammar->extra_args.push_back(std::make_pair(*type, *name));
 }
 
-directive |= rule(rule) {
-	grammar->add_rule(*rule);
+directive |= SYMBOL(lhs) "|=" rhs(rhs) action(action) {
+	grammar->add_rule({solar::item_t(*lhs, rhs->first), rhs->second, *action});
 }
 
+directive |= SYMBOL(lhs) "|=" '(' CHAR(c1) "..." CHAR(c2) ')' ';' {
+	vars_t vars;
+	vars.emplace_back();
 
-rule |= SYMBOL(lhs) "|=" rhs(rhs) action(action)
-	[new solar::rule_t {solar::item_t(*lhs, rhs->first), rhs->second, *action}]
+	for (unsigned int c = c1; c <= c2; c++)
+		grammar->add_rule({solar::item_t(*lhs, {solar::symbol_t::make_char(c)}), vars, std::string()});
+}
 
 
 rhs |= [new rhs_t()]