import { AbstractFlowrAnalyzerContext } from './abstract-flowr-analyzer-context';
import { FlowrAnalyzerPackageVersionsPlugin, type SigDbLoadedInfo } from '../plugins/package-version-plugins/flowr-analyzer-package-versions-plugin';
import { Package } from '../plugins/package-version-plugins/package';
import type { PackageSignatureSource } from '../sigdb/reader';
import { Identifier } from '../../dataflow/environments/identifier';
import type { DecodedFunction } from '../sigdb/decode';
import type { Range } from 'semver';
import type { FlowrAnalyzerFunctionsContext, ReadOnlyFlowrAnalyzerFunctionsContext } from './flowr-analyzer-functions-context';
import type { InvalidationEvent, InvalidationEventReceiver } from '../cache/flowr-cache';
/**
 * Read-only interface to the {@link FlowrAnalyzerDependenciesContext} for inspecting dependencies without modifying them.
 */
export interface ReadOnlyFlowrAnalyzerDependenciesContext {
    /**
     * The name of this context.
     */
    readonly name: string;
    /**
     * The functions context associated with this dependencies-context.
     */
    readonly functionsContext: ReadOnlyFlowrAnalyzerFunctionsContext;
    /**
     * Get the dependency with the given name, if it exists.
     *
     * If the static dependencies have not yet been loaded, this may trigger a resolution step.
     * Pass `version` to pin the resolution to a constraint (an exact version string, or a {@link Range}; uncached;
     * `versionOverrides` config still wins, base-R stays tied to the assumed R version); otherwise the version
     * comes from the declared constraints.
     * @param name    - The name of the dependency to get.
     * @param version - Optional version constraint to pin the resolution to (exact version string or a {@link Range}).
     * @returns The dependency with the given name, or undefined if it does not exist.
     */
    getDependency(name: string, version?: string | Range): Readonly<Package> | undefined;
    /**
     * The versions a dependency can possibly have: its {@link Package.derivedRange|derived range}, but only once
     * some version can satisfy it. `undefined` if the dependency is unknown, if nothing constrains it, or if the
     * sources contradict each other, since then no version is possible at all.
     *
     * For *why* it is what it is (the individual constraints, or the version the database resolved to), take the
     * {@link Package} from {@link getDependency}.
     * @param name - The name of the dependency.
     */
    inferredRange(name: string): Range | undefined;
    /**
     * Get all dependencies known to this context.
     */
    getDependencies(): readonly Readonly<Package>[];
    /**
     * Every package name the project *declares* (`Depends`/`Imports`/`Suggests`/`LinkingTo`/`Enhances`), whether or
     * not it became a loadable dependency here. `Suggests` do not, yet they still name packages the project may install.
     */
    declaredPackageNames(): readonly string[];
    /**
     * Metadata of the signature databases the version plugins currently have loaded.
     */
    loadedSignatureDatabases(): SigDbLoadedInfo[];
    /**
     * The identifying names (scopes, e.g. `base`/`current`/`history`) of the signature databases currently
     * available, deduplicated. A simple view over {@link loadedSignatureDatabases} for checking what a project
     * can resolve against; empty when the signature database is disabled or none is loaded.
     */
    availableSignatureDatabases(): readonly string[];
    /**
     * Whether at least one signature database is available (i.e., {@link availableSignatureDatabases} is non-empty).
     * Cheaper than materializing the list when only the presence matters.
     */
    hasSignatureDatabase(): boolean;
    /**
     * The names of known packages that export `name` (from the version plugins' signature databases). Used to
     * hint which `library()`/`::` might be missing for an otherwise-undefined symbol. Empty if no database is
     * available or the signature database is disabled.
     */
    packagesExporting(name: string): readonly string[];
    /** The signature sources the version plugins currently have loaded (backs the signature query). */
    signatureSources(): readonly PackageSignatureSource[];
    /**
     * The signature-database entry for the qualified call `id` (a `pkg::fn` {@link Identifier}) from the first
     * {@link signatureSources|source} that has it, resolving the package version from the project's dependency info
     * unless `version` overrides it. This is the easy way to obtain a function's parameters from a context: pass
     * `fn.signature` (or {@link signatureParameterNames}) to {@link RFunctionCall.matchArgsToParams}. `undefined`
     * if `id` is unqualified or no loaded source defines it.
     */
    signatureOf(id: Identifier, version?: string): DecodedFunction | undefined;
}
/**
 * Manages the project's dependencies, their versions, and their interplay with {@link FlowrAnalyzerPackageVersionsPlugin}s.
 */
export declare class FlowrAnalyzerDependenciesContext extends AbstractFlowrAnalyzerContext<undefined, void, FlowrAnalyzerPackageVersionsPlugin> implements ReadOnlyFlowrAnalyzerDependenciesContext, InvalidationEventReceiver {
    readonly name = "flowr-analyzer-dependencies-context";
    readonly functionsContext: FlowrAnalyzerFunctionsContext;
    private dependencies;
    /** what {@link getDependency} resolved for a package the project does not depend on, so a lookup never makes it one */
    private resolvedOnly;
    private staticsLoaded;
    /** resolvers consulted lazily to fill in exports; `existing` carries version info from other plugins */
    private lazyResolvers;
    private resolvedMisses;
    reset(): void;
    /** Register a resolver consulted by {@link getDependency} to fill in a package's exports lazily. */
    addLazyResolver(resolver: (name: string, existing?: Package) => Package | undefined): void;
    loadedSignatureDatabases(): SigDbLoadedInfo[];
    availableSignatureDatabases(): readonly string[];
    hasSignatureDatabase(): boolean;
    packagesExporting(name: string): readonly string[];
    signatureSources(): readonly PackageSignatureSource[];
    signatureOf(id: Identifier, version?: string): DecodedFunction | undefined;
    /** Whether any version plugin can resolve the base-R packages (a versioned signature source is available). */
    hasBaseRSource(): boolean;
    /** Cheap fingerprint of only the base-R-providing databases, so base-R-derived caches survive unrelated database changes. */
    baseRSourceFingerprint(): string;
    /** Mount an additional signature database/source by path (a plain `.sigs.ndjson`, a `.br`, or a manifest). */
    addDatabaseSource(source: string): Promise<void>;
    /** Eagerly mount every version plugin's signature database up front (see `solver.sigdb.eagerlyLoad`). */
    eagerlyLoadSignatureDatabases(): void;
    receive(event: InvalidationEvent): void;
    constructor(functionsContext: FlowrAnalyzerFunctionsContext, plugins?: readonly FlowrAnalyzerPackageVersionsPlugin[]);
    resolveStaticDependencies(): void;
    /** Runs the static plugins once. They fill this context and the project metadata, so both gate their reads on it. */
    ensureStaticsLoaded(): void;
    /**
     * Register a dependency declared by a project metadata file (`DESCRIPTION`, `renv.lock`, `rv.lock`, `uvr.lock`). Gated by
     * `solver.sigdb.loadProjectDependencies`: when project-dependency loading is disabled this is a no-op, so the
     * declared deps never enter the context (unlike {@link addDependency}, used for on-demand signature-database
     * resolution).
     */
    addDeclaredDependency(pkg: Package): this;
    addDependency(pkg: Package): this;
    getDependency(name: string, version?: string | Range): Package | undefined;
    /** Like {@link getDependency}, but for a package the code pulls in (`library(p)`): the result joins the project's {@link getDependencies|dependencies}. */
    loadDependency(name: string): Package | undefined;
    /** Resolve `name` constrained to `range` via the plugins (uncached); falls back to the cached dependency. */
    private resolvePinnedDependency;
    inferredRange(name: string): Range | undefined;
    getDependencies(): Package[];
    declaredPackageNames(): string[];
}