1use std::cmp::Ordering;23use jrsonnet_parser::{BinaryOpType, LocExpr, UnaryOpType};45use crate::{6 error::ErrorKind::*, evaluate, stdlib::std_format, throw, typed::Typed, val::equals, Context,7 Result, Val,8};910pub fn evaluate_unary_op(op: UnaryOpType, b: &Val) -> Result<Val> {11 use UnaryOpType::*;12 use Val::*;13 Ok(match (op, b) {14 (Not, Bool(v)) => Bool(!v),15 (Minus, Num(n)) => Num(-*n),16 (BitNot, Num(n)) => Num(f64::from(!(*n as i32))),17 (op, o) => throw!(UnaryOperatorDoesNotOperateOnType(op, o.value_type())),18 })19}2021pub fn evaluate_add_op(a: &Val, b: &Val) -> Result<Val> {22 use Val::*;23 Ok(match (a, b) {24 (Str(a), Str(b)) if a.is_empty() => Val::Str(b.clone()),25 (Str(a), Str(b)) if b.is_empty() => Val::Str(a.clone()),26 (Str(v1), Str(v2)) => Str(((**v1).to_owned() + v2).into()),2728 29 (Num(a), Str(b)) => Str(format!("{a}{b}").into()),30 (Str(a), Num(b)) => Str(format!("{a}{b}").into()),3132 (Str(a), o) | (o, Str(a)) if a.is_empty() => Val::Str(o.clone().to_string()?),33 (Str(a), o) => Str(format!("{a}{}", o.clone().to_string()?).into()),34 (o, Str(a)) => Str(format!("{}{a}", o.clone().to_string()?).into()),3536 (Obj(v1), Obj(v2)) => Obj(v2.extend_from(v1.clone())),37 (Arr(a), Arr(b)) => {38 let mut out = Vec::with_capacity(a.len() + b.len());39 out.extend(a.iter_lazy());40 out.extend(b.iter_lazy());41 Arr(out.into())42 }43 (Num(v1), Num(v2)) => Val::new_checked_num(v1 + v2)?,44 _ => throw!(BinaryOperatorDoesNotOperateOnValues(45 BinaryOpType::Add,46 a.value_type(),47 b.value_type(),48 )),49 })50}5152pub fn evaluate_mod_op(a: &Val, b: &Val) -> Result<Val> {53 use Val::*;54 match (a, b) {55 (Num(a), Num(b)) => {56 if *b == 0.0 {57 throw!(DivisionByZero)58 }59 Ok(Num(a % b))60 }61 (Str(str), vals) => String::into_untyped(std_format(str.clone(), vals.clone())?),62 (a, b) => throw!(BinaryOperatorDoesNotOperateOnValues(63 BinaryOpType::Mod,64 a.value_type(),65 b.value_type()66 )),67 }68}6970pub fn evaluate_binary_op_special(71 ctx: Context,72 a: &LocExpr,73 op: BinaryOpType,74 b: &LocExpr,75) -> Result<Val> {76 use BinaryOpType::*;77 use Val::*;78 Ok(match (evaluate(ctx.clone(), a)?, op, b) {79 (Bool(true), Or, _o) => Val::Bool(true),80 (Bool(false), And, _o) => Val::Bool(false),81 (a, op, eb) => evaluate_binary_op_normal(&a, op, &evaluate(ctx, eb)?)?,82 })83}8485pub fn evaluate_compare_op(a: &Val, op: BinaryOpType, b: &Val) -> Result<Ordering> {86 use Val::*;87 Ok(match (a, b) {88 (Str(a), Str(b)) => a.cmp(b),89 (Num(a), Num(b)) => a.partial_cmp(b).expect("jsonnet numbers are non NaN"),90 (Arr(a), Arr(b)) => {91 let ai = a.iter();92 let bi = b.iter();9394 for (a, b) in ai.zip(bi) {95 let ord = evaluate_compare_op(&a?, op, &b?)?;96 if !ord.is_eq() {97 return Ok(ord);98 }99 }100101 a.len().cmp(&b.len())102 }103 (_, _) => throw!(BinaryOperatorDoesNotOperateOnValues(104 op,105 a.value_type(),106 b.value_type()107 )),108 })109}110111pub fn evaluate_binary_op_normal(a: &Val, op: BinaryOpType, b: &Val) -> Result<Val> {112 use BinaryOpType::*;113 use Val::*;114 Ok(match (a, op, b) {115 (a, Add, b) => evaluate_add_op(a, b)?,116117 (a, Eq, b) => Bool(equals(a, b)?),118 (a, Neq, b) => Bool(!equals(a, b)?),119120 (a, Lt, b) => Bool(evaluate_compare_op(a, Lt, b)?.is_lt()),121 (a, Gt, b) => Bool(evaluate_compare_op(a, Gt, b)?.is_gt()),122 (a, Lte, b) => Bool(evaluate_compare_op(a, Lte, b)?.is_le()),123 (a, Gte, b) => Bool(evaluate_compare_op(a, Gte, b)?.is_ge()),124125 (Str(a), In, Obj(obj)) => Bool(obj.has_field_ex(a.clone(), true)),126 (a, Mod, b) => evaluate_mod_op(a, b)?,127128 (Str(v1), Mul, Num(v2)) => Str(v1.repeat(*v2 as usize).into()),129130 131 (Bool(a), And, Bool(b)) => Bool(*a && *b),132 (Bool(a), Or, Bool(b)) => Bool(*a || *b),133134 135 (Num(v1), Mul, Num(v2)) => Val::new_checked_num(v1 * v2)?,136 (Num(v1), Div, Num(v2)) => {137 if *v2 == 0.0 {138 throw!(DivisionByZero)139 }140 Val::new_checked_num(v1 / v2)?141 }142143 (Num(v1), Sub, Num(v2)) => Val::new_checked_num(v1 - v2)?,144145 (Num(v1), BitAnd, Num(v2)) => Num(f64::from((*v1 as i32) & (*v2 as i32))),146 (Num(v1), BitOr, Num(v2)) => Num(f64::from((*v1 as i32) | (*v2 as i32))),147 (Num(v1), BitXor, Num(v2)) => Num(f64::from((*v1 as i32) ^ (*v2 as i32))),148 (Num(v1), Lhs, Num(v2)) => {149 if *v2 < 0.0 {150 throw!("shift by negative exponent")151 }152 Num(f64::from((*v1 as i32) << (*v2 as i32)))153 }154 (Num(v1), Rhs, Num(v2)) => {155 if *v2 < 0.0 {156 throw!("shift by negative exponent")157 }158 Num(f64::from((*v1 as i32) >> (*v2 as i32)))159 }160161 _ => throw!(BinaryOperatorDoesNotOperateOnValues(162 op,163 a.value_type(),164 b.value_type(),165 )),166 })167}