45 lines
1.3 KiB
JavaScript
45 lines
1.3 KiB
JavaScript
import ParseNode from '/imports/parser/parseTree/ParseNode.js';
|
|
import ConstantNode from '/imports/parser/parseTree/ConstantNode.js';
|
|
|
|
export default class IfNode extends ParseNode {
|
|
constructor({condition, consequent, alternative}){
|
|
super();
|
|
this.condition = condition;
|
|
this.consequent = consequent;
|
|
this.alternative = alternative;
|
|
}
|
|
toString(){
|
|
let {condition, consequent, alternative} = this;
|
|
return `${condition.toString()} ? ${consequent.toString()} : ${alternative.toString()}`
|
|
}
|
|
compile(){
|
|
let condition = this.condition.compile();
|
|
let consequent = this.consequent.compile();
|
|
let alternative = this.alternative.compile();
|
|
if (
|
|
condition.type !== 'string' &&
|
|
condition.type !== 'number' &&
|
|
condition.type !== 'boolean'
|
|
){
|
|
// Handle unresolved condition
|
|
return new ConstantNode({
|
|
value: `${condition.value}) ${consequent.value} else ${alternative.value}`,
|
|
type: 'uncompiledNode',
|
|
errors: [
|
|
...condition.errors,
|
|
...consequent.errors,
|
|
...alternative.errors,
|
|
],
|
|
});
|
|
} else {
|
|
// So long as the condition reolves, return the correct alternative,
|
|
// even if it's unresolved
|
|
if (condition.value){
|
|
return consequent;
|
|
} else {
|
|
return alternative;
|
|
}
|
|
}
|
|
}
|
|
}
|