miloignis/kraken
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity

make grammer/parser use simple adts, fix it so adt literals aren't closed over by accident

Browse Source
This commit is contained in:
Nathan Braswell
2015-08-30 01:53:11 -04:00
parent 5f3f3e5a66
commit 13c6044193
4 changed files with 39 additions and 29 deletions
Download Patch File Download Diff File Expand all files Collapse all files

12
stdlib/parser.krak
View File

@@ -63,7 +63,7 @@ obj parser (Object) {
// if the zero state contains any reductions for state 0 and eof, then
// it must be reducing to the goal state
println("checking the bidness")
if (inputStr == "" && gram.parse_table.get(0, eof_symbol()).contains(action(reduce, 0))) {
if (inputStr == "" && gram.parse_table.get(0, eof_symbol()).contains(action(action_type::reduce, 0))) {
println("Accept on no input for ")
println(name)
return new<tree<symbol>>()->construct(null_symbol())
@@ -92,10 +92,10 @@ obj parser (Object) {
gram.parse_table.get(0, input[0]).for_each(fun(act: action) {
println("for each action")
act.print()
if (act.act == push)
if (act.act == action_type::push)
to_shift.push(make_pair(v0, act.state_or_rule))
/*else if (act.act == reduce && fully_reduces_to_null(gram.rules[act.state_or_rule])) {*/
else if (act.act == reduce && act.rule_position == 0) {
else if (act.act == action_type::reduce && act.rule_position == 0) {
print("act == reduce && == 0 Adding reduction from state: ")
println(v0->data)
to_reduce.push(reduction(v0, gram.rules[act.state_or_rule].lhs, 0, null_symbol_tree, null_symbol_tree))
@@ -197,7 +197,7 @@ obj parser (Object) {
gram.parse_table.get(shift_to, input[i]).for_each(fun(act: action) {
var reduce_rule = gram.rules[act.state_or_rule]
/*if (act.act == reduce && !fully_reduces_to_null(reduce_rule)) {*/
if (act.act == reduce && act.rule_position != 0) {
if (act.act == action_type::reduce && act.rule_position != 0) {
to_reduce.push(reduction(curr_reached, reduce_rule.lhs,
act.rule_position,
get_nullable_parts(reduce_rule),
@@ -213,7 +213,7 @@ obj parser (Object) {
gss.add_to_frontier(i, shift_to_node)
gss.add_edge(shift_to_node, curr_reached, new_label)
gram.parse_table.get(shift_to, input[i]).for_each(fun(act: action) {
if (act.act == push) {
if (act.act == action_type::push) {
to_shift.push(make_pair(shift_to_node, act.state_or_rule))
} else {
var action_rule = gram.rules[act.state_or_rule]
@@ -278,7 +278,7 @@ obj parser (Object) {
println("post add edger")
gram.parse_table.get(shift.second, input[i+1]).for_each(fun(action: action) {
println("looking at an action")
if (action.act == push) {
if (action.act == action_type::push) {
println("is push")
next_shifts.push(make_pair(shift_to_node, action.state_or_rule))
} else {