Enum snoot::Sexpr

pub enum Sexpr {
    List {
        list_type: ListType,
        opening_token: TokenInfo,
        closing_token: TokenInfo,
        children: Vec<Sexpr>,
        span: Span,
    },
    UnaryOperator {
        op: TokenInfo,
        child: Box<Sexpr>,
        span: Span,
    },
    Terminal(TokenInfo, Span),
    String(TokenInfo, Span),
}

The S-Expression tree type.

Variants

List

An S-Expression List.

Typically looks like (...), [...], or {...}.

Fields of List

list_type: ListType
opening_token: TokenInfo
closing_token: TokenInfo
children: Vec<Sexpr>
span: Span

UnaryOperator

An s-expression unary operator (currently impossible to construct)

Fields of UnaryOperator

op: TokenInfo
child: Box<Sexpr>
span: Span

Terminal(TokenInfo, Span)

A "terminal" node in the tree.

Examples: 5.0, foo, asdlkh23y823ysd.

String(TokenInfo, Span)

A "string" node in the tree.

Examples: "foo"

Methods

impl Sexpr

fn text(&self) -> StrTendril

Returns the text that built this s-expression

This is a shortcut for .span().text().

fn kind(&self) -> SexprKind

Returns an easily-matchable SexprKind value.

fn span(&self) -> &Span

Returns the span over the source code that this s-expression encompasses

fn last_token(&self) -> &TokenInfo

Returns the last token that contributed to building this expression

fn first_token(&self) -> &TokenInfo

Returns the first token that contrtbuted to building this expression

fn expect_int(&self, diagnostics: &mut DiagnosticBag) -> Option<i64>

fn expect_float(&self, diagnostics: &mut DiagnosticBag) -> Option<f64>

fn expect_list(&self, diagnostics: &mut DiagnosticBag) -> Option<&[Sexpr]>

fn expect_terminal(
    &self,
    symbol: &str,
    diagnostics: &mut DiagnosticBag
) -> Option<()>

fn expect_list_with_symbol(
    &self,
    symbol: &str,
    diagnostics: &mut DiagnosticBag
) -> Option<&[Sexpr]>

Trait Implementations

impl Eq for Sexpr

impl PartialEq for Sexpr

fn eq(&self, __arg_0: &Sexpr) -> bool

This method tests for self and other values to be equal, and is used by ==.

fn ne(&self, __arg_0: &Sexpr) -> bool

This method tests for !=.

impl Debug for Sexpr

fn fmt(&self, __arg_0: &mut Formatter) -> Result

Formats the value using the given formatter.

impl Clone for Sexpr

fn clone(&self) -> Sexpr

Returns a copy of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.