Struct MacroLexer 

pub struct MacroLexer<LB, U>
where
    LB: LexerBase,
    U: Clone,
{ /* private fields */ }

The macro lexer interprets and evaluates assignment statements and expressions.

Implementations

impl<LB, U> MacroLexer<LB, U>

where LB: LexerBase, U: Clone,

pub fn new(base_lexer: LB, user_object: &U) -> Self

Creates a new macro lexer, given an original base lexer. This will interpret all tokens necessary for macro interpretation and expansion, and result into tokens specific for the user of this lexer.

pub fn symbol_table(&self) -> HashSet<Symbol>

Retrieves the symbol table to be used apart from the Macro Lexer

pub fn add_fn( &mut self, name: &str, func: fn(Vec<String>, &str, usize, usize, &U) -> Result<Vec<Lexicon>, String>, )

Adds a macro function to be able to be called by the interpreter

Trait Implementations

impl<LB, U> LexerBase for MacroLexer<LB, U>

where LB: LexerBase, U: Clone,

fn next_token(&mut self) -> Token

Goes forward to the next token in the stream, if available.

fn current_stream(&self) -> Option<String>

Returns the current stream’s name, if any (for example, the normal lexer does know this value)