rest-sql 0.3.0

RSQL/FIQL filter parser and validator for REST APIs — parse, validate, compile to native DB queries
Documentation 
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use crate::ast::{Ast, Constraint, Operator, Value};

fn leaf(field: &str, operator: Operator, value: Value) -> Ast {
    Ast::Constraint(Constraint {
        field: field.to_owned(),
        operator,
        value,
    })
}

pub fn eq(field: &str, value: impl Into<Value>) -> Ast {
    leaf(field, Operator::Eq, value.into())
}

pub fn neq(field: &str, value: impl Into<Value>) -> Ast {
    leaf(field, Operator::Neq, value.into())
}

pub fn lt(field: &str, value: impl Into<Value>) -> Ast {
    leaf(field, Operator::Lt, value.into())
}

pub fn lte(field: &str, value: impl Into<Value>) -> Ast {
    leaf(field, Operator::Lte, value.into())
}

pub fn gt(field: &str, value: impl Into<Value>) -> Ast {
    leaf(field, Operator::Gt, value.into())
}

pub fn gte(field: &str, value: impl Into<Value>) -> Ast {
    leaf(field, Operator::Gte, value.into())
}

pub fn in_<V: Into<Value>>(field: &str, values: impl IntoIterator<Item = V>) -> Ast {
    leaf(
        field,
        Operator::In,
        Value::List(values.into_iter().map(Into::into).collect()),
    )
}

pub fn out<V: Into<Value>>(field: &str, values: impl IntoIterator<Item = V>) -> Ast {
    leaf(
        field,
        Operator::Out,
        Value::List(values.into_iter().map(Into::into).collect()),
    )
}

pub fn between(field: &str, lo: impl Into<Value>, hi: impl Into<Value>) -> Ast {
    leaf(
        field,
        Operator::Between,
        Value::List(vec![lo.into(), hi.into()]),
    )
}

pub fn null(field: &str) -> Ast {
    leaf(field, Operator::Null, Value::Bool(true))
}

pub fn not_null(field: &str) -> Ast {
    leaf(field, Operator::NotNull, Value::Bool(true))
}

pub fn like(field: &str, pattern: impl Into<String>) -> Ast {
    leaf(field, Operator::Like, Value::String(pattern.into()))
}

pub fn ilike(field: &str, pattern: impl Into<String>) -> Ast {
    leaf(field, Operator::Ilike, Value::String(pattern.into()))
}