LR.item

LR.parser()->kernel

Class LR.parser

Description

This object implements an LALR(1) parser and compiler.

Normal use of this object would be:

 {add_rule, set_priority, set_associativity}*
 set_symbol_to_string
 compile
 {parse}*
 

Variable grammar

mapping(int|string:array(rule)) LR.parser.grammar

Description

The grammar itself.

Variable start_state

kernel LR.parser.start_state

Description

The initial LR0 state.

Variable verbose

int LR.parser.verbose

Description

Verbosity level

0 None 1 Some

Variable error

int LR.parser.error

Description

Error code

Variable known_states

mapping(string:kernel) LR.parser.known_states

Description

LR0 states that are already known to the compiler.

Variable s_q

state_queue LR.parser.s_q

Description

Contains all states used. In the queue-part are the states that remain to be compiled.