Press n or j to go to the next uncovered block, b, p or k for the previous block.
| 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 40 41 42 43 44 45 46 47 48 | 3188x 3179x 2868x 2868x 2868x 311x 311x 311x 311x 9x 5x 4x | 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 { negate, numericOperand, subtract } from '../../type/numeric.js';
/**
* Subtraction, and unary negation when the parser supplies a single operand.
*/
export class OpMinus extends Operator {
constructor(
operatorName: string,
startPos: number,
endPos: number,
...operands: import('../spel-node.js').SpelNodeImpl[]
) {
super(NodeType.OP_MINUS, operatorName, startPos, endPos, ...operands);
}
public override getValueInternal(state: ExpressionState): TypedValue {
// A prefix `-` carries one operand. The parser emits that shape directly
// rather than inventing a placeholder left operand, which previously made
// this node ambiguous with a genuine `null - x`.
if (this.children.length === 1) {
const operand = this.children[0]!.getValue(state);
const negated = negate(
numericOperand(operand.getValue(), operand.getNumericKind(), this.startPos),
);
return new TypedValue(negated.value, null, negated.kind);
}
const leftValue = this.children[0]!.getValue(state);
const rightValue = this.children[1]!.getValue(state);
const difference = subtract(
numericOperand(leftValue.getValue(), leftValue.getNumericKind(), this.startPos),
numericOperand(rightValue.getValue(), rightValue.getNumericKind(), this.startPos),
);
return new TypedValue(difference.value, null, difference.kind);
}
public override toStringAST(): string {
if (this.children.length === 1) {
return `(-${this.children[0]?.toStringAST() ?? ''})`;
}
return super.toStringAST();
}
}
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