Struct Stmt

pub struct Stmt {
    pub expr: Expr,
    pub semicolon: Option<Range<usize>>,
    pub span: Range<usize>,
}

Represents a statement in CalcScript.

A statement is the building block of all CalcScript programs. A complete program is a sequence of one or more statements that are executed in order, and returns the value of the last statement. A statement’s return value can be discarded by adding a semicolon at the end of the statement.

Fields

expr: Expr

The expression of a statement.

semicolon: Option<Range<usize>>

The span of the semicolon that terminates the statement, if any.

When this is None, the statement is an expression, and will return the value of the expression. Otherwise, the expression is evaluated for side effects, and the statement returns the unit type ().

span: Range<usize>

The region of the source code that this statement was parsed from.

Implementations

impl Stmt

pub fn span(&self) -> Range<usize>

Returns the span of the statement.

Trait Implementations

impl Clone for Stmt

fn clone(&self) -> Stmt

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for Stmt

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

Formats the value using the given formatter.

impl Display for Stmt

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

Formats the value using the given formatter.

impl Latex for Stmt

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

Format the value as LaTeX.

fn as_display(&self) -> LatexFormatter<'_, Self>

Wraps the value in a LatexFormatter, which implements Display.

impl<'source> Parse<'source> for Stmt

fn std_parse( input: &mut Parser<'source>, recoverable_errors: &mut Vec<Error>, ) -> Result<Self, Vec<Error>>

Parses a value from the given stream of tokens, advancing the stream past the consumed tokens if parsing is successful.

fn parse(input: &mut Parser<'source>) -> ParseResult<Self>

Parses a value from the given stream of tokens, advancing the stream past the consumed tokens if parsing is successful.

impl PartialEq for Stmt

fn eq(&self, other: &Stmt) -> bool

Tests for self and other values to be equal, and is used by ==.

fn ne(&self, other: &Rhs) -> bool

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl Eq for Stmt

impl StructuralPartialEq for Stmt