Enum Token 

pub enum Token {
    Exponent(Box<Token>, Box<Token>),
    Multiply(Box<Token>, Box<Token>),
    Divide(Box<Token>, Box<Token>),
    Add(Box<Token>, Box<Token>),
    Subtract(Box<Token>, Box<Token>),
    Equality(Box<Token>, Box<Token>),
    Parenthesis(Box<Token>),
    Answer(Uuid),
    Number(Number),
    Variable(Box<Variable>),
    Negative(Box<Token>),
    Boolean(bool),
    Store(String, Box<Token>),
}

Represents either a single parser token or an entire tokenized expression.

2+2 would parse down roughly to Add(Number(2), Number(2)).

Variants

Exponent(Box<Token>, Box<Token>)

Exponent token, parsed from “^”.

Multiply(Box<Token>, Box<Token>)

Multiply token, parse from “*”.

Divide(Box<Token>, Box<Token>)

Divide token, parsed from “/”.

Add(Box<Token>, Box<Token>)

Add token, parsed from “+”.

Subtract(Box<Token>, Box<Token>)

Subtract token, parsed from “-”.

Equality(Box<Token>, Box<Token>)

Equality token, parsed from “=”.

Parenthesis(Box<Token>)

Parenthesis token, parsed from “()”.

Answer(Uuid)

Answer token, parsed from an inverse offset preceded by an @

Number(Number)

Number token, parsed from any number 0-9.

Variable(Box<Variable>)

Variable token, holds the symbol of a variable along with the value at parsing

Negative(Box<Token>)

Negative token, parsed from any negative sign

Boolean(bool)

Boolean token, not currently parsed but can be returned from simplify functions.

Store(String, Box<Token>)

Store token, used to store values into variables. First string is the id of the variable, second are the tokens to be stored in the variable

Implementations

impl Token

pub fn to_string(&self, session: &Session) -> String

Converts entire tokenized expressions into strings recursively.

Trait Implementations

impl Clone for Token

fn clone(&self) -> Token

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for Token

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

Formats the value using the given formatter.

impl<'de> Deserialize<'de> for Token

fn deserialize<__D>(__deserializer: __D) -> Result<Self, __D::Error>

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl PartialEq for Token

fn eq(&self, other: &Token) -> 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 Serialize for Token

fn serialize<__S>(&self, __serializer: __S) -> Result<__S::Ok, __S::Error>

where __S: Serializer,

Serialize this value into the given Serde serializer.

impl StructuralPartialEq for Token