57 lines
1.7 KiB
JavaScript
57 lines
1.7 KiB
JavaScript
import ParseNode from '/imports/parser/parseTree/ParseNode.js';
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import ConstantNode from '/imports/parser/parseTree/ConstantNode.js';
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export default class OperatorNode extends ParseNode {
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constructor({left, right, operator, fn}) {
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super(...arguments);
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this.left = left;
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this.right = right;
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this.fn = fn;
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this.operator = operator;
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}
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resolve(fn, scope, context){
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let leftNode = this.left[fn](scope, context);
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let rightNode = this.right[fn](scope, context);
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let left, right;
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if (!(leftNode instanceof ConstantNode) || !(rightNode instanceof ConstantNode)){
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return new OperatorNode({
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left: leftNode,
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right: rightNode,
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operator: this.operator,
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fn: this.fn,
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});
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} else {
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left = leftNode.value;
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right = rightNode.value;
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}
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let result;
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switch(this.operator){
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case '+': result = left + right; break;
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case '-': result = left - right; break;
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case '*': result = left * right; break;
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case '/': result = left / right; break;
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case '^': result = Math.pow(left, right); break;
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case '&':
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case '&&': result = left && right; break;
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case '|':
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case '||': result = left || right; break;
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case '=':
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case '==':
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case '===': result = left == right; break;
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case '!=':
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case '>': result = left > right; break;
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case '<': result = left < right; break;
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case '>=': result = left >= right; break;
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case '<=': result = left <= right; break;
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}
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return new ConstantNode({
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value: result,
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type: typeof result,
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});
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}
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toString(){
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let {left, right, operator} = this;
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return `${left.toString()} ${operator} ${right.toString()}`;
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}
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}
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