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Lots of work on the parser including testing interface

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This commit is contained in:
Stefan Zermatten
2020-09-09 17:09:50 +02:00
parent 445171ce80
commit 81645df2a6
15 changed files with 341 additions and 39 deletions
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42
app/imports/parser/parseTree/OperatorNode.js
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@@ -1,4 +1,5 @@
import ParseNode from '/imports/parser/parseTree/ParseNode.js';
import ConstantNode from '/imports/parser/parseTree/ConstantNode.js';
export default class OperatorNode extends ParseNode {
constructor({left, right, operator, fn}) {
@@ -8,4 +9,45 @@ export default class OperatorNode extends ParseNode {
this.fn = fn;
this.operator = operator;
}
compile(){
let leftNode = this.left.compile();
let rightNode = this.right.compile();
let left, right;
if (leftNode.type !== 'number' || rightNode.type !== 'number'){
return new OperatorNode({
left: leftNode,
right: rightNode,
operator: this.operator,
fn: this.fn
});
} else {
left = leftNode.value;
right = rightNode.value;
}
let result;
switch(this.operator){
case '+': result = left + right; break;
case '-': result = left - right; break;
case '*': result = left * right; break;
case '/': result = left / right; break;
case '^': result = Math.pow(left, right); break;
case '&':
case '&&': result = left && right; break;
case '|':
case '||': result = left || right; break;
case '=':
case '==':
case '===': result = left == right; break;
case '!=':
case '>': result = left > right; break;
case '<': result = left < right; break;
case '>=': result = left >= right; break;
case '<=': result = left <= right; break;
}
return new ConstantNode({value: result, type: typeof result});
}
toString(){
let {left, right, operator} = this;
return `${left.toString()} ${operator} ${right.toString()}`;
}
}