Struct CalcToken 

pub struct CalcToken {
    pub token_id: TokenID,
    pub value: TokenValue,
    pub span: Option<Span>,
}

A concrete lexical token for the calculator frontend.

CalcToken is a lightweight container that implements parlex::Token, exposing its identifier and source position. It groups:

• a token kind via TokenID,
• an optional payload via TokenValue,
• a 1-based source line number.

Trait implementation

Implements Token with:

• token_id: returns the token’s TokenID,
• line_no: returns the token’s source line number.

Fields

• token_id: the token’s category (identifier, number, operator, …)
• value: associated payload (symbol index or literal)
• line_no: 1-based source line number

Example

let tok = CalcToken {
    token_id: TokenID::Number,
    value: TokenValue::Number(99),
    span: span!(0, 0, 0, 2),
};

assert_eq!(tok.token_id(), TokenID::Number);
assert_eq!(tok.span(), span!(0, 0, 0, 2));

Fields

token_id: TokenID

The token’s kind or category (e.g. identifier, operator, number).

value: TokenValue

The associated value for the token, if applicable.

span: Option<Span>

The line number in the input source where the token occurs.

Implementations

impl CalcToken

pub fn merge_span(&mut self, other_span: &Option<Span>)

pub fn to_statement(&mut self, comment: Option<String>)

Trait Implementations

impl Clone for CalcToken

fn clone(&self) -> CalcToken

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for CalcToken

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

Formats the value using the given formatter.

impl Token for CalcToken

type TokenID = TokenID

The associated identifier type used to classify this token.

fn token_id(&self) -> Self::TokenID

Returns the token’s kind identifier.

fn span(&self) -> Option<Span>

Returns the line number where the token appears.