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fix reference type inference

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This commit is contained in:
Nathan Braswell
2015-07-15 13:56:57 -04:00
parent 06f36f2a87
commit 51adf491fa
8 changed files with 65 additions and 30 deletions
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61
stdlib/grammer.krak
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@@ -139,42 +139,53 @@ obj grammer (Object) {
)
var first_helper = fun(rhs: vector::vector<symbol::symbol>): set::set<symbol::symbol> {
var toRet = set::set<symbol::symbol>()
rhs.for_each(fun(sym: symbol::symbol) {
toRet.add(first_set_map[sym])
})
if (rhs.size) {
for (var i = 0; i < rhs.size; i++;) {
var lookahead = first_set_map[rhs[i]]
if (lookahead.contains(symbol::null_symbol())) {
lookahead.remove(symbol::null_symbol())
toRet.add(lookahead)
} else {
toRet.add(lookahead)
break
}
}
} else {
toRet.add(symbol::null_symbol())
}
return toRet
}
var changed = true
while (changed) {
io::println("//////////current state of map/////////////")
/*io::println("//////////current state of map/////////////")*/
first_set_map.keys.for_each(fun(sym: symbol::symbol) {
io::print("for ")
io::println(sym.to_string())
io::println("map is:")
first_set_map[sym].for_each(fun(look: symbol::symbol) {
io::print("lookahead: "); io::println(look.to_string())
})
/*io::print("for ")*/
/*io::println(sym.to_string())*/
/*io::println("map is:")*/
/*first_set_map[sym].for_each(fun(look: symbol::symbol) {*/
/*io::print("lookahead: "); io::println(look.to_string())*/
/*})*/
})
changed = false
rules.for_each( fun(r: rule) {
var rule_lookahead = first_helper(r.rhs)
if (!changed) {
io::println(r.to_string())
/*io::println(r.to_string())*/
changed = !first_set_map[r.lhs].contains(rule_lookahead)
io::print("changed: "); io::println(changed)
io::print("\tcurrent lookahead is sized:")
io::println(first_set_map[r.lhs].size())
io::println("\tcurrent lookahead is:")
first_set_map[r.lhs].for_each(fun(look: symbol::symbol) {
io::print("\t\tlookahead: "); io::println(look.to_string())
})
io::println()
io::print("\rule lookahead is sized:")
io::println(rule_lookahead.size())
io::println("\trule lookahead is:")
rule_lookahead.for_each(fun(look: symbol::symbol) {
io::print("\t\tlookahead: "); io::println(look.to_string())
})
/*io::print("changed: "); io::println(changed)*/
/*io::print("\tcurrent lookahead is sized:")*/
/*io::println(first_set_map[r.lhs].size())*/
/*io::println("\tcurrent lookahead is:")*/
/*first_set_map[r.lhs].for_each(fun(look: symbol::symbol) {*/
/*io::print("\t\tlookahead: "); io::println(look.to_string())*/
/*})*/
/*io::println()*/
/*io::print("\rule lookahead is sized:")*/
/*io::println(rule_lookahead.size())*/
/*io::println("\trule lookahead is:")*/
/*rule_lookahead.for_each(fun(look: symbol::symbol) {*/
/*io::print("\t\tlookahead: "); io::println(look.to_string())*/
/*})*/
}
first_set_map[r.lhs].add(rule_lookahead)
})