Struct opg::table::OpTable

pub struct OpTable {
    table: HashMap<(String, String), char>,
    ts: HashSet<String>,
}

A struct of Operation Table.

Fields

table: HashMap<(String, String), char>

The hashmap of relation.

ts: HashSet<String>

The terminal set in the grammar.

Implementations

impl OpTable

pub fn new(ts: HashSet<String>) -> OpTable

Create a new opTable.

pub fn insert(&mut self, ttuple: &(String, String), ch: char)

Insert to table.

Principles

Try to insert the a tuple with ch relation. If it is occupied and not equal to the relation to be inserted, then the grammar is ambiguous and the panic will be fired.

pub fn to_string(&self) -> String

Convert table to string.

Trait Implementations

impl Display for OpTable

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Define the behavior of outputting an opTable struct.