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#[cfg(feature = "compile-with-external-structures")]
use crate::containers::ExternalMaybePtr;
#[cfg(feature = "compile-with-external-structures")]
type MaybePtr<T> = ExternalMaybePtr<T>;
#[cfg(not(feature = "compile-with-external-structures"))]
type MaybePtr<T> = Option<Box<T>>;

#[cfg(feature = "compile-with-external-structures")]
use crate::containers::ExternalList;
#[cfg(feature = "compile-with-external-structures")]
type List<T> = ExternalList<T>;
#[cfg(not(feature = "compile-with-external-structures"))]
type List<T> = Vec<T>;

use crate::source::Comment;
use crate::source::DecodedInput;
use crate::source::MagicComment;
use crate::Diagnostic;
use crate::Node;
use crate::Token;

/// Combination of all data that `Parser` can give you
#[derive(Debug)]
#[repr(C)]
pub struct ParserResult {
    /// Abstract Syntax Tree that was constructed from you code.
    /// Contains `None` if the code gives no AST nodes
    pub ast: MaybePtr<Node>,

    /// List of tokens returned by a Lexer and consumed by a Parser.
    /// Empty unless ParserOptions::record_tokens is set to true.
    pub tokens: List<Token>,

    /// List of all diagnostics (errors and warings) that have been
    /// recorded during lexing and parsing
    pub diagnostics: List<Diagnostic>,

    /// List of comments extracted from the source code.
    pub comments: List<Comment>,

    /// List of magic comments extracted from the source code.
    pub magic_comments: List<MagicComment>,

    /// Input that was used for parsing.
    ///
    /// Note: this input is not necessary the same byte array that
    /// you passed to Parser::parse. If encoding of the input is
    /// not `UTF-8` or `ASCII-8BIT/BINARY` Parser invokes `decoder`
    /// that usually produces a different sequence of bytes.
    ///
    /// Pass **this** data to `Loc::source`, otherwise you'll get
    /// incorrect source ranges.
    pub input: DecodedInput,
}