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import {deepEqual} from '@jsonjoy.com/util/lib/json-equal/deepEqual';
import {deepEqualCodegen} from '@jsonjoy.com/util/lib/json-equal/deepEqualCodegen';
import * as util from '../util';
import type * as types from '../types';
const eqLitVsExpr = (
literal: Literal,
expression: Expression,
ctx: types.OperatorCodegenCtx<types.Expression>,
not?: boolean,
): ExpressionResult => {
const fn = deepEqualCodegen(literal.val);
const d = ctx.const(fn);
return new Expression(`${not ? '!' : ''}${d}(${expression})`);
};
const binaryOperands = (
expr: types.BinaryExpression<any>,
ctx: types.OperatorEvalCtx,
): [left: unknown, right: unknown] => {
const left = ctx.eval(expr[1], ctx);
const right = ctx.eval(expr[2], ctx);
return [left, right];
};
const ternaryOperands = (
expr: types.TernaryExpression<any>,
ctx: types.OperatorEvalCtx,
): [a: unknown, b: unknown, c: unknown] => {
const a = ctx.eval(expr[1], ctx);
const b = ctx.eval(expr[2], ctx);
const c = ctx.eval(expr[3], ctx);
return [a, b, c];
};
export const comparisonOperators: types.OperatorDefinition<any>[] = [
[
'==',
['eq'],
2,
(expr: types.ExprEquals, ctx) => {
const [left, right] = binaryOperands(expr, ctx);
return deepEqual(left, right);
},
(ctx: types.OperatorCodegenCtx<types.ExprEquals>): ExpressionResult => {
const a = ctx.operands[0];
const b = ctx.operands[1];
if (a instanceof Literal && b instanceof Expression) return eqLitVsExpr(a, b, ctx);
if (b instanceof Literal && a instanceof Expression) return eqLitVsExpr(b, a, ctx);
ctx.link(deepEqual, 'deepEqual');
return new Expression(`deepEqual(${a},${b})`);
},
] as types.OperatorDefinition<types.ExprEquals>,
[
'!=',
['ne'],
2,
(expr: types.ExprNotEquals, ctx) => {
const [left, right] = binaryOperands(expr, ctx);
return !deepEqual(left, right);
},
(ctx: types.OperatorCodegenCtx<types.ExprNotEquals>): ExpressionResult => {
const a = ctx.operands[0];
const b = ctx.operands[1];
if (a instanceof Literal && b instanceof Expression) return eqLitVsExpr(a, b, ctx, true);
if (b instanceof Literal && a instanceof Expression) return eqLitVsExpr(b, a, ctx, true);
ctx.link(deepEqual, 'deepEqual');
return new Expression(`!deepEqual(${a},${b})`);
},
] as types.OperatorDefinition<types.ExprNotEquals>,
[
'>',
['gt'],
2,
(expr: types.ExprGreaterThan, ctx) => {
const [left, right] = binaryOperands(expr, ctx);
return <any>left > <any>right;
},
(ctx: types.OperatorCodegenCtx<types.ExprGreaterThan>): ExpressionResult => {
return new Expression(`(${ctx.operands[0]})>(${ctx.operands[1]})`);
},
] as types.OperatorDefinition<types.ExprGreaterThan>,
[
'>=',
['ge'],
2,
(expr: types.ExprGreaterThanOrEqual, ctx) => {
const [left, right] = binaryOperands(expr, ctx);
return <any>left >= <any>right;
},
(ctx: types.OperatorCodegenCtx<types.ExprGreaterThanOrEqual>): ExpressionResult => {
return new Expression(`(${ctx.operands[0]})>=(${ctx.operands[1]})`);
},
] as types.OperatorDefinition<types.ExprGreaterThanOrEqual>,
[
'<',
['lt'],
2,
(expr: types.ExprLessThan, ctx) => {
const [left, right] = binaryOperands(expr, ctx);
return <any>left < <any>right;
},
(ctx: types.OperatorCodegenCtx<types.ExprLessThan>): ExpressionResult => {
return new Expression(`(${ctx.operands[0]})<(${ctx.operands[1]})`);
},
] as types.OperatorDefinition<types.ExprLessThan>,
[
'<=',
['le'],
2,
(expr: types.ExprLessThanOrEqual, ctx) => {
const [left, right] = binaryOperands(expr, ctx);
return <any>left <= <any>right;
},
(ctx: types.OperatorCodegenCtx<types.ExprLessThanOrEqual>): ExpressionResult => {
return new Expression(`(${ctx.operands[0]})<=(${ctx.operands[1]})`);
},
] as types.OperatorDefinition<types.ExprLessThanOrEqual>,
[
'cmp',
[],
2,
(expr: types.ExprCmp, ctx) => {
const [left, right] = binaryOperands(expr, ctx);
return util.cmp(left, right);
},
(ctx: types.OperatorCodegenCtx<types.ExprCmp>): ExpressionResult => {
ctx.link(util.cmp, 'cmp');
return new Expression(`cmp((${ctx.operands[0]}),(${ctx.operands[1]}))`);
},
] as types.OperatorDefinition<types.ExprCmp>,
[
'=><=',
['between'],
3,
(expr: types.ExprBetweenEqEq, ctx) => {
const [val, min, max] = ternaryOperands(expr, ctx);
return util.betweenEqEq(val, min, max);
},
(ctx: types.OperatorCodegenCtx<types.ExprBetweenEqEq>): ExpressionResult => {
ctx.link(util.betweenEqEq, 'betweenEqEq');
return new Expression(`betweenEqEq(${ctx.operands[0]},${ctx.operands[1]},${ctx.operands[2]})`);
},
] as types.OperatorDefinition<types.ExprBetweenEqEq>,
[
'><',
[],
3,
(expr: types.ExprBetweenNeNe, ctx) => {
const [val, min, max] = ternaryOperands(expr, ctx);
return util.betweenNeNe(val, min, max);
},
(ctx: types.OperatorCodegenCtx<types.ExprBetweenNeNe>): ExpressionResult => {
ctx.link(util.betweenNeNe, 'betweenNeNe');
return new Expression(`betweenNeNe(${ctx.operands[0]},${ctx.operands[1]},${ctx.operands[2]})`);
},
] as types.OperatorDefinition<types.ExprBetweenNeNe>,
[
'=><',
[],
3,
(expr: types.ExprBetweenEqNe, ctx) => {
const [val, min, max] = ternaryOperands(expr, ctx);
return util.betweenEqNe(val, min, max);
},
(ctx: types.OperatorCodegenCtx<types.ExprBetweenEqNe>): ExpressionResult => {
ctx.link(util.betweenEqNe, 'betweenEqNe');
return new Expression(`betweenEqNe(${ctx.operands[0]},${ctx.operands[1]},${ctx.operands[2]})`);
},
] as types.OperatorDefinition<types.ExprBetweenEqNe>,
[
'><=',
[],
3,
(expr: types.ExprBetweenNeEq, ctx) => {
const [val, min, max] = ternaryOperands(expr, ctx);
return util.betweenNeEq(val, min, max);
},
(ctx: types.OperatorCodegenCtx<types.ExprBetweenNeEq>): ExpressionResult => {
ctx.link(util.betweenNeEq, 'betweenNeEq');
return new Expression(`betweenNeEq(${ctx.operands[0]},${ctx.operands[1]},${ctx.operands[2]})`);
},
] as types.OperatorDefinition<types.ExprBetweenNeEq>,
];
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