Struct erl_pp::Preprocessor [−] [src]

pub struct Preprocessor<T, E = Error> { /* fields omitted */ }

Erlang source code preprocessor.

This is an iterator which preprocesses given tokens and iterates on the resulting tokens.

The resulting tokens contains no macro directives and all macro calls in the input tokens are expanded.

Examples

use erl_pp::Preprocessor;
use erl_tokenize::Lexer;

let src = r#"-define(FOO(A), [A, A]). -define(BAR, ?LINE). ?FOO(?BAR)."#;
let pp = Preprocessor::new(Lexer::new(src));
let tokens = pp.collect::<Result<Vec<_>, _>>().unwrap();

assert_eq!(tokens.iter().map(|t| t.text()).collect::<Vec<_>>(),
           ["[", "1", ",", "1", "]", "."]);

Methods

impl<T, E> Preprocessor<T, E> where
    T: Iterator<Item = Result<LexicalToken, E>>,
    E: Into<Error>, 
[src]

Makes a new Preprocessor instance.

Returns a reference to the predefined macros which are recognized by this preprocessor.

Returns a mutable reference to the predefined macros which are recognized by this preprocessor.

Returns a reference to the code path list which will be used by this preprocessor for handling include_lib directive.

Returns a mutable reference to the code path list which will be used by this preprocessor for handling include_lib directive.

Returns a reference to the map containing the macro directives encountered by this preprocessor so far.

The keys of this map are starting positions of the corresponding directives.

Returns a reference to the map containing the macro calls encountered by this preprocessor so far.

The keys of this map are starting positions of the corresponding macro calls.

Note this map only contains top level macro calls. Macro calls that occurred during expansion of other macros are excluded.

Trait Implementations

impl<T: Debug, E: Debug> Debug for Preprocessor<T, E>
[src]

Formats the value using the given formatter.

impl<T, E> Iterator for Preprocessor<T, E> where
    T: Iterator<Item = Result<LexicalToken, E>>,
    E: Into<Error>, 
[src]

The type of the elements being iterated over.

Advances the iterator and returns the next value. Read more

Returns the bounds on the remaining length of the iterator. Read more

Consumes the iterator, counting the number of iterations and returning it. Read more

Consumes the iterator, returning the last element. Read more

Returns the nth element of the iterator. Read more

🔬 This is a nightly-only experimental API. (iterator_step_by)

unstable replacement of Range::step_by

Creates an iterator starting at the same point, but stepping by the given amount at each iteration. Read more

Takes two iterators and creates a new iterator over both in sequence. Read more

'Zips up' two iterators into a single iterator of pairs. Read more

Takes a closure and creates an iterator which calls that closure on each element. Read more

Creates an iterator which uses a closure to determine if an element should be yielded. Read more

Creates an iterator that both filters and maps. Read more

Creates an iterator which gives the current iteration count as well as the next value. Read more

Creates an iterator which can use peek to look at the next element of the iterator without consuming it. Read more

Creates an iterator that [skip]s elements based on a predicate. Read more

Creates an iterator that yields elements based on a predicate. Read more

Creates an iterator that skips the first n elements. Read more

Creates an iterator that yields its first n elements. Read more

An iterator adaptor similar to [fold] that holds internal state and produces a new iterator. Read more

Creates an iterator that works like map, but flattens nested structure. Read more

Creates an iterator which ends after the first [None]. Read more

Do something with each element of an iterator, passing the value on. Read more

Borrows an iterator, rather than consuming it. Read more

Transforms an iterator into a collection. Read more

Consumes an iterator, creating two collections from it. Read more

An iterator adaptor that applies a function, producing a single, final value. Read more

Tests if every element of the iterator matches a predicate. Read more

Tests if any element of the iterator matches a predicate. Read more

Searches for an element of an iterator that satisfies a predicate. Read more

Searches for an element in an iterator, returning its index. Read more

Searches for an element in an iterator from the right, returning its index. Read more

Returns the maximum element of an iterator. Read more

Returns the minimum element of an iterator. Read more

Returns the element that gives the maximum value from the specified function. Read more

Returns the element that gives the maximum value with respect to the specified comparison function. Read more

Returns the element that gives the minimum value from the specified function. Read more

Returns the element that gives the minimum value with respect to the specified comparison function. Read more

Reverses an iterator's direction. Read more

Converts an iterator of pairs into a pair of containers. Read more

Creates an iterator which [clone]s all of its elements. Read more

Repeats an iterator endlessly. Read more

Sums the elements of an iterator. Read more

Iterates over the entire iterator, multiplying all the elements Read more

Lexicographically compares the elements of this Iterator with those of another. Read more

Lexicographically compares the elements of this Iterator with those of another. Read more

Determines if the elements of this Iterator are equal to those of another. Read more

Determines if the elements of this Iterator are unequal to those of another. Read more

Determines if the elements of this Iterator are lexicographically less than those of another. Read more

Determines if the elements of this Iterator are lexicographically less or equal to those of another. Read more

Determines if the elements of this Iterator are lexicographically greater than those of another. Read more

Determines if the elements of this Iterator are lexicographically greater than or equal to those of another. Read more