1use std::cmp::Ordering;23use jrsonnet_parser::{BinaryOpType, LocExpr, UnaryOpType};45use crate::{6 arr::ArrValue,7 error::ErrorKind::*,8 evaluate,9 stdlib::std_format,10 throw,11 typed::Typed,12 val::{equals, StrValue},13 Context, Result, Val,14};1516pub fn evaluate_unary_op(op: UnaryOpType, b: &Val) -> Result<Val> {17 use UnaryOpType::*;18 use Val::*;19 Ok(match (op, b) {20 (Not, Bool(v)) => Bool(!v),21 (Minus, Num(n)) => Num(-*n),22 (BitNot, Num(n)) => Num(f64::from(!(*n as i32))),23 (op, o) => throw!(UnaryOperatorDoesNotOperateOnType(op, o.value_type())),24 })25}2627pub fn evaluate_add_op(a: &Val, b: &Val) -> Result<Val> {28 use Val::*;29 Ok(match (a, b) {30 (Str(v1), Str(v2)) => Str(StrValue::concat(v1.clone(), v2.clone())),3132 33 (Num(a), Str(b)) => Str(StrValue::Flat(format!("{a}{b}").into())),34 (Str(a), Num(b)) => Str(StrValue::Flat(format!("{a}{b}").into())),3536 (Str(a), o) | (o, Str(a)) if a.is_empty() => {37 Val::Str(StrValue::Flat(o.clone().to_string()?))38 }39 (Str(a), o) => Str(StrValue::Flat(40 format!("{a}{}", o.clone().to_string()?).into(),41 )),42 (o, Str(a)) => Str(StrValue::Flat(43 format!("{}{a}", o.clone().to_string()?).into(),44 )),4546 (Obj(v1), Obj(v2)) => Obj(v2.extend_from(v1.clone())),47 (Arr(a), Arr(b)) => Val::Arr(ArrValue::extended(a.clone(), b.clone())),4849 (Num(v1), Num(v2)) => Val::new_checked_num(v1 + v2)?,50 _ => throw!(BinaryOperatorDoesNotOperateOnValues(51 BinaryOpType::Add,52 a.value_type(),53 b.value_type(),54 )),55 })56}5758pub fn evaluate_mod_op(a: &Val, b: &Val) -> Result<Val> {59 use Val::*;60 match (a, b) {61 (Num(a), Num(b)) => {62 if *b == 0.0 {63 throw!(DivisionByZero)64 }65 Ok(Num(a % b))66 }67 (Str(str), vals) => {68 String::into_untyped(std_format(&str.clone().into_flat(), vals.clone())?)69 }70 (a, b) => throw!(BinaryOperatorDoesNotOperateOnValues(71 BinaryOpType::Mod,72 a.value_type(),73 b.value_type()74 )),75 }76}7778pub fn evaluate_binary_op_special(79 ctx: Context,80 a: &LocExpr,81 op: BinaryOpType,82 b: &LocExpr,83) -> Result<Val> {84 use BinaryOpType::*;85 use Val::*;86 Ok(match (evaluate(ctx.clone(), a)?, op, b) {87 (Bool(true), Or, _o) => Val::Bool(true),88 (Bool(false), And, _o) => Val::Bool(false),89 (a, op, eb) => evaluate_binary_op_normal(&a, op, &evaluate(ctx, eb)?)?,90 })91}9293pub fn evaluate_compare_op(a: &Val, b: &Val, op: BinaryOpType) -> Result<Ordering> {94 use Val::*;95 Ok(match (a, b) {96 (Str(a), Str(b)) => a.cmp(b),97 (Num(a), Num(b)) => a.partial_cmp(b).expect("jsonnet numbers are non NaN"),98 (Arr(a), Arr(b)) => {99 if let (Some(ai), Some(bi)) = (a.iter_cheap(), b.iter_cheap()) {100 for (a, b) in ai.zip(bi) {101 let ord = evaluate_compare_op(&a, &b, op)?;102 if !ord.is_eq() {103 return Ok(ord);104 }105 }106 } else {107 let ai = a.iter();108 let bi = b.iter();109110 for (a, b) in ai.zip(bi) {111 let ord = evaluate_compare_op(&a?, &b?, op)?;112 if !ord.is_eq() {113 return Ok(ord);114 }115 }116 }117 a.len().cmp(&b.len())118 }119 (_, _) => throw!(BinaryOperatorDoesNotOperateOnValues(120 op,121 a.value_type(),122 b.value_type()123 )),124 })125}126127pub fn evaluate_binary_op_normal(a: &Val, op: BinaryOpType, b: &Val) -> Result<Val> {128 use BinaryOpType::*;129 use Val::*;130 Ok(match (a, op, b) {131 (a, Add, b) => evaluate_add_op(a, b)?,132133 (a, Eq, b) => Bool(equals(a, b)?),134 (a, Neq, b) => Bool(!equals(a, b)?),135136 (a, Lt, b) => Bool(evaluate_compare_op(a, b, Lt)?.is_lt()),137 (a, Gt, b) => Bool(evaluate_compare_op(a, b, Gt)?.is_gt()),138 (a, Lte, b) => Bool(evaluate_compare_op(a, b, Lte)?.is_le()),139 (a, Gte, b) => Bool(evaluate_compare_op(a, b, Gte)?.is_ge()),140141 (Str(a), In, Obj(obj)) => Bool(obj.has_field_ex(a.clone().into_flat(), true)),142 (a, Mod, b) => evaluate_mod_op(a, b)?,143144 (Str(v1), Mul, Num(v2)) => Str(StrValue::Flat(v1.to_string().repeat(*v2 as usize).into())),145146 147 (Bool(a), And, Bool(b)) => Bool(*a && *b),148 (Bool(a), Or, Bool(b)) => Bool(*a || *b),149150 151 (Num(v1), Mul, Num(v2)) => Val::new_checked_num(v1 * v2)?,152 (Num(v1), Div, Num(v2)) => {153 if *v2 == 0.0 {154 throw!(DivisionByZero)155 }156 Val::new_checked_num(v1 / v2)?157 }158159 (Num(v1), Sub, Num(v2)) => Val::new_checked_num(v1 - v2)?,160161 (Num(v1), BitAnd, Num(v2)) => Num(f64::from((*v1 as i32) & (*v2 as i32))),162 (Num(v1), BitOr, Num(v2)) => Num(f64::from((*v1 as i32) | (*v2 as i32))),163 (Num(v1), BitXor, Num(v2)) => Num(f64::from((*v1 as i32) ^ (*v2 as i32))),164 (Num(v1), Lhs, Num(v2)) => {165 if *v2 < 0.0 {166 throw!("shift by negative exponent")167 }168 Num(f64::from((*v1 as i32) << (*v2 as i32)))169 }170 (Num(v1), Rhs, Num(v2)) => {171 if *v2 < 0.0 {172 throw!("shift by negative exponent")173 }174 Num(f64::from((*v1 as i32) >> (*v2 as i32)))175 }176177 _ => throw!(BinaryOperatorDoesNotOperateOnValues(178 op,179 a.value_type(),180 b.value_type(),181 )),182 })183}