All files / src/ast/operator op-lt.ts

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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';
 
export class OpLT extends Operator {
  constructor(
    operatorName: string,
    startPos: number,
    endPos: number,
    ...operands: import('../spel-node.js').SpelNodeImpl[]
  ) {
    super(NodeType.OP_LT, operatorName, startPos, endPos, ...operands);
  }
 
  public override getValueInternal(state: ExpressionState): TypedValue {
    const left = this.children[0]!.getValue(state).getValue();
    const right = this.children[1]!.getValue(state).getValue();
 
    // Both strings: string comparison
    if (typeof left === 'string' && typeof right === 'string') {
      return new TypedValue(left.localeCompare(right) < 0);
    }
 
    // Both numbers: numeric comparison
    if (typeof left === 'number' && typeof right === 'number') {
      return new TypedValue(left < right);
    }
 
    // Default: convert both to strings and compare
    return new TypedValue(String(left) < String(right));
  }
}