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| 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 | 1377x 1343x 1343x 1343x 1343x 1343x 8x 1335x 1335x | import type { ExpressionState } from '../../expression-state.js';
import { TypedValue } from '../../typed-value.js';
import { Operator } from '../spel-node.js';
import { NodeType } from '../../language/node-type.js';
import { add, numericOperand } from '../../type/numeric.js';
/**
* Addition, or concatenation when either operand is a String.
*/
export class OpPlus extends Operator {
constructor(
operatorName: string,
startPos: number,
endPos: number,
...operands: import('../spel-node.js').SpelNodeImpl[]
) {
super(NodeType.OP_PLUS, operatorName, startPos, endPos, ...operands);
}
public override getValueInternal(state: ExpressionState): TypedValue {
const leftValue = this.children[0]!.getValue(state);
const rightValue = this.children[1]!.getValue(state);
const left = leftValue.getValue();
const right = rightValue.getValue();
// A String operand promotes the whole expression to concatenation, as in
// Java, so this takes precedence over numeric addition.
if (typeof left === 'string' || typeof right === 'string') {
return new TypedValue(String(left) + String(right));
}
const sum = add(
numericOperand(left, leftValue.getNumericKind(), this.startPos),
numericOperand(right, rightValue.getNumericKind(), this.startPos),
);
return new TypedValue(sum.value, null, sum.kind);
}
}
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