/**
 * AssertionEvaluator  (G24 — v1.5.0)
 * ─────────────────────────────────────
 * Evaluates xs:assert test="..." XPath 1.0 expressions against XmlElement
 * nodes.  Uses the existing compiled XPath engine.
 *
 * Supported test expression forms
 * ────────────────────────────────
 *  Attribute comparisons:   @attr = 'value'   @min <= @max
 *  Numeric comparisons:     @count > 0
 *  String functions:        string-length(@name) > 0   contains(@x, 'y')
 *  Existence:               @required   not(@forbidden)
 *  Child element check:     child/grandchild
 *  Boolean AND/OR:          @a and @b    @a or @b
 *
 * Note: xs:assert arithmetic (e.g. @x + @y < 10) requires operator
 * evaluation not present in the XPath 1.0 subset — such expressions return
 * true (pass-through) to avoid false-positive errors.
 *
 * Usage
 * ─────
 *  const evaluator = new AssertionEvaluator(element);
 *  const passed    = evaluator.evaluate('@min <= @max');
 */
import { XmlElement } from '../parser/XmlNodes';
export interface AssertionDefinition {
    /** XPath 1.0 test expression */
    test: string;
    /** Optional human-readable failure message (from xs:assert/@message) */
    message?: string;
}
export declare class AssertionEvaluator {
    private element;
    /** Last expression that fell through to pass-through (for diagnostics) */
    lastPassThroughExpr: string | undefined;
    /**
     * NP2-08 fix: count of all unsupported/pass-through expressions evaluated.
     * Callers can check this to detect that the schema has unsupported assertions
     * rather than relying on the single lastPassThroughExpr string.
     */
    passThroughCount: number;
    constructor(element: XmlElement);
    /**
     * Evaluate a single XPath 1.0 test expression against this element.
     * Returns true if the assertion passes, false if it fails.
     *
     * Supports:
     * - Attribute presence:        @attr
     * - Attribute equality:        @attr = 'value'  |  @attr != 'value'
     * - Attribute comparison:      @attr &lt;= @other  (<=, <, >=, >)
     * - Numeric attr comparison:   @attr > 0
     * - Negation:                  not(@attr)
     * - Logical AND/OR:            @a and @b  |  @a or @b
     * - String functions:          string-length(@attr) > 0
     *                              contains(@attr, 'x')
     *                              starts-with(@attr, 'x')
     * - Child existence:           child   ./child
     * - Self text:                 . = 'value'
     */
    evaluate(testExpr: string): boolean;
    private _evalExpr;
    private _compare;
    private _getValue;
    /**
     * T-08: Get text content of a child identified by a path expression.
     * Handles single-level and multi-level paths.
     */
    private _getChildText;
    /** Find a binary operator at the top (non-nested) level of the expression. */
    private _findBinaryOp;
    /** Return the index of the closing paren matching the opening paren at index 0. */
    private _matchingParen;
}
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