Struct GetInputVariablesVisitor 

pub struct GetInputVariablesVisitor {
    pub input_variables: HashSet<InputVariable>,
    pub expression_fns: HashSet<String>,
    pub data_fns: HashSet<String>,
    pub scale_fns: HashSet<String>,
}

Visitor to collect all unbound input variables in the expression

Fields

input_variables: HashSet<InputVariable>

expression_fns: HashSet<String>

data_fns: HashSet<String>

scale_fns: HashSet<String>

Implementations

impl GetInputVariablesVisitor

pub fn new() -> Self

Trait Implementations

impl Clone for GetInputVariablesVisitor

fn clone(&self) -> GetInputVariablesVisitor

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Default for GetInputVariablesVisitor

fn default() -> GetInputVariablesVisitor

Returns the “default value” for a type.

impl ExpressionVisitor for GetInputVariablesVisitor

fn visit_called_identifier(&mut self, node: &Identifier, args: &[Expression])

Collect data and scale identifiers. These show up as a literal string as the first argument to a Data or Scale callable.

fn visit_identifier(&mut self, node: &Identifier)

fn visit_expression(&mut self, _expression: &Expression)

fn visit_literal(&mut self, _node: &Literal)

fn visit_binary(&mut self, _node: &BinaryExpression)

fn visit_logical(&mut self, _node: &LogicalExpression)

fn visit_unary(&mut self, _node: &UnaryExpression)

fn visit_conditional(&mut self, _node: &ConditionalExpression)

fn visit_member(&mut self, _node: &MemberExpression)

fn visit_call(&mut self, _node: &CallExpression)

fn visit_array(&mut self, _node: &ArrayExpression)

fn visit_object(&mut self, _node: &ObjectExpression)

fn visit_object_key(&mut self, _node: &Key)

fn visit_static_member_identifier(&mut self, _node: &Identifier)