45 lines
1.1 KiB
JavaScript
45 lines
1.1 KiB
JavaScript
import resolve, { traverse, toString } from '../resolve';
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const ifNode = {
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create({condition, consequent, alternative}){
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return {
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parseType: 'if',
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condition,
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consequent,
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alternative,
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};
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},
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toString(node){
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let {condition, consequent, alternative} = node;
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return `${toString(condition)} ? ${toString(consequent)} : ${toString(alternative)}`
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},
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resolve(fn, node, scope, context){
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let {result: condition} = resolve(fn, node.condition, scope, context);
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if (condition.parseType === 'constant'){
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if (condition.value){
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return resolve(fn, node.consequent, scope, context);
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} else {
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return resolve(fn, node.alternative, scope, context);
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}
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} else {
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return {
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result: ifNode.create({
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condition: condition,
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consequent: node.consequent,
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alternative: node.alternative,
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}),
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context,
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};
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}
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},
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traverse(node, fn){
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fn(node);
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traverse(node.condition, fn);
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traverse(node.consequent, fn);
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traverse(node.alternative, fn);
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},
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}
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export default ifNode;
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