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# File 'opal/stdlib/racc/parser.rb', line 27
def _racc_do_parse_rb(arg, in_debug)
action_table = arg[0]
action_check = arg[1]
action_default = arg[2]
action_pointer = arg[3]
goto_table = arg[4]
goto_check = arg[5]
goto_default = arg[6]
goto_pointer = arg[7]
nt_base = arg[8]
reduce_table = arg[9]
token_table = arg[10]
shift_n = arg[11]
reduce_n = arg[12]
use_result = arg[13]
racc_state = [0]
racc_tstack = []
racc_vstack = []
racc_t = nil
racc_tok = nil
racc_val = nil
racc_read_next = true
racc_user_yyerror = false
racc_error_status = 0
token = nil; act = nil; i = nil; nerr = nil; custate = nil
while true
i = action_pointer[racc_state[-1]]
if i
if racc_read_next
if racc_t != 0 token = next_token
racc_tok = token[0]
racc_val = token[1]
if racc_tok == false racc_t = 0
else
racc_t = token_table[racc_tok]
racc_t = 1 unless racc_t
end
racc_read_token(racc_t, racc_tok, racc_val) if @yydebug
racc_read_next = false
end
end
i += racc_t
if (i < 0) || (act = action_table[i]).nil? || (action_check[i] != racc_state[-1])
act = action_default[racc_state[-1]]
end
else
act = action_default[racc_state[-1]]
end
puts "(act: #{act}, shift_n: #{shift_n}, reduce_n: #{reduce_n})" if @yydebug
if act > 0 && act < shift_n
if racc_error_status > 0
if racc_t != 1
racc_error_status -= 1
end
end
racc_vstack.push racc_val
curstate = act
racc_state << act
racc_read_next = true
if @yydebug
racc_tstack.push racc_t
racc_shift racc_t, racc_tstack, racc_vstack
end
elsif act < 0 && act > -reduce_n
reduce_i = act * -3
reduce_len = reduce_table[reduce_i]
reduce_to = reduce_table[reduce_i + 1]
method_id = reduce_table[reduce_i + 2]
tmp_t = racc_tstack.last reduce_len
tmp_v = racc_vstack.last reduce_len
racc_state.pop reduce_len
racc_vstack.pop reduce_len
racc_tstack.pop reduce_len
if use_result
reduce_call_result = self.__send__ method_id, tmp_v, nil, tmp_v[0]
racc_vstack.push reduce_call_result
else
raise "not using result??"
end
racc_tstack.push reduce_to
if @yydebug
racc_reduce tmp_t, reduce_to, racc_tstack, racc_vstack
end
k1 = reduce_to - nt_base
if (reduce_i = goto_pointer[k1]) != nil
reduce_i += racc_state[-1]
if (reduce_i >= 0) && ((curstate = goto_table[reduce_i]) != nil) && (goto_check[reduce_i] == k1)
racc_state.push curstate
else
racc_state.push goto_default[k1]
end
else
racc_state.push goto_default[k1]
end
elsif act == shift_n
return racc_vstack[0]
elsif act == -reduce_n
raise SyntaxError, "unexpected '#{racc_tok.inspect}'"
else
raise "Rac: unknown action: #{act}"
end
if @yydebug
racc_next_state racc_state[-1], racc_state
end
end
end
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