Enum ASTExpr 

pub enum ASTExpr {
    And(Vec<ASTExpr>),
    Or(Vec<ASTExpr>),
    Not(Box<ASTExpr>),
    Compare {
        field: String,
        op: CompareOp,
    },
}

AST for query filters https://en.wikipedia.org/wiki/Abstract_syntax_tree

Variants

And(Vec<ASTExpr>)

Logical AND: all sub-expressions must be true

Or(Vec<ASTExpr>)

Logical OR: at least one sub-expression must be true

Not(Box<ASTExpr>)

Logical NOT: negates the sub-expression

Compare

Comparison on a field (supports dot notation)

Fields

field: String

op: CompareOp

Implementations

impl ASTExpr

Implementation of the visitor pattern for ASTExpr

pub fn accept<V: ASTVisitor>(&self, visitor: &mut V) -> V::Output

Accept a visitor and return its output

impl ASTExpr

Extension methods for ASTExpr for custom string representation

pub fn to_string_with_indent(&self, indent: &str) -> String

Convert the AST expression to a human-readable string with custom indentation

Trait Implementations

impl Clone for ASTExpr

fn clone(&self) -> ASTExpr

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for ASTExpr

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

Formats the value using the given formatter.

impl Display for ASTExpr

Display implementation for ASTExpr to easily print as string

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

Formats the value using the given formatter.

impl PartialEq for ASTExpr

fn eq(&self, other: &ASTExpr) -> 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 StructuralPartialEq for ASTExpr