107 lines
2.4 KiB
JavaScript
107 lines
2.4 KiB
JavaScript
import {fromJSON as behaviorItemFromJSON} from './registry';
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export class Condition {
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constructor() {
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this.operator = '';
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this.operands = [];
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}
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check(context) {
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return this.get(context);
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}
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clone(other) {
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this.operator = other.operator;
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this.operands = other.operands.map((operand) => operand.clone());
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}
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fromJSON(json) {
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this.operator = json.operator;
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this.operands = json.operands.map((operand) => {
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return behaviorItemFromJSON(operand);
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});
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return this;
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}
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get(context) {
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switch (this.operator) {
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case 'is':
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return this.operands[0].get(context) === this.operands[1].get(context);
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case 'isnt':
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return this.operands[0].get(context) !== this.operands[1].get(context);
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case '>':
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return this.operands[0].get(context) > this.operands[1].get(context);
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case '>=':
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return this.operands[0].get(context) >= this.operands[1].get(context);
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case '<':
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return this.operands[0].get(context) < this.operands[1].get(context);
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case '<=':
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return this.operands[0].get(context) <= this.operands[1].get(context);
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case 'or':
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if (0 === this.operands.length) {
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return true;
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}
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for (const operand of this.operands) {
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if (!!operand.get(context)) {
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return true;
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}
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}
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return false;
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case 'and':
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if (0 === this.operands.length) {
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return true;
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}
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for (const operand of this.operands) {
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if (!operand.get(context)) {
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return false;
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}
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}
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return true;
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case 'contains':
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if (this.operands.length < 2) {
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return false;
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}
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const haystack = this.operands[0].get(context);
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const needle = this.operands[1].get(context);
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return -1 !== haystack.indexOf(needle);
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}
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}
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operandCount() {
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return this.operands.length;
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}
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operand(index) {
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return this.operands[index];
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}
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operands() {
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return this.operands;
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}
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operator() {
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return this.operator;
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}
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setOperand(index, operand) {
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this.operands[index] = operand;
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}
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setOperator(operator) {
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this.operator = operator;
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}
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toJSON() {
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return {
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type: 'condition',
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operator: this.operator,
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operands: this.operands.map((operand) => operand.toJSON()),
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};
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}
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}
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