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community[minor],langchain[minor]: Move base classes and reference im…
…plementations to core (langchain-ai#5187) * Move toolkit declaration to core * Move more reference implementations to core * Move BaseChatMemory * Revert BaseChatMemory move * core[patch],langchain[patch]: Refactor self query (langchain-ai#5192) * Move BaseChain and LLMChain to legacy entrypoint in core * Fix build * Add deprecation strings * Revert BaseChain and LLMChain moves * Rename * Refactor * Revert * Update imports * Remove type * Remove peer dep * Update lock * Bump deps * Fix
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -1,186 +1 @@ | ||
| import { VectorStore } from "@langchain/core/vectorstores"; | ||
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| /** | ||
| * Represents logical AND operator. | ||
| */ | ||
| export type AND = "and"; | ||
| /** | ||
| * Represents logical OR operator. | ||
| */ | ||
| export type OR = "or"; | ||
| /** | ||
| * Represents logical NOT operator. | ||
| */ | ||
| export type NOT = "not"; | ||
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| /** | ||
| * Represents a logical operator which can be AND, OR, or NOT. | ||
| */ | ||
| export type Operator = AND | OR | NOT; | ||
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| /** | ||
| * Represents equality comparison operator. | ||
| */ | ||
| export type EQ = "eq"; | ||
| /** | ||
| * Represents inequality comparison operator. | ||
| */ | ||
| export type NE = "ne"; | ||
| /** | ||
| * Represents less than comparison operator. | ||
| */ | ||
| export type LT = "lt"; | ||
| /** | ||
| * Represents greater than comparison operator. | ||
| */ | ||
| export type GT = "gt"; | ||
| /** | ||
| * Represents less than or equal to comparison operator. | ||
| */ | ||
| export type LTE = "lte"; | ||
| /** | ||
| * Represents greater than or equal to comparison operator. | ||
| */ | ||
| export type GTE = "gte"; | ||
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| /** | ||
| * Represents a comparison operator which can be EQ, NE, LT, GT, LTE, or | ||
| * GTE. | ||
| */ | ||
| export type Comparator = EQ | NE | LT | GT | LTE | GTE; | ||
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| export const Operators: { [key: string]: Operator } = { | ||
| and: "and", | ||
| or: "or", | ||
| not: "not", | ||
| }; | ||
|
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| export const Comparators: { [key: string]: Comparator } = { | ||
| eq: "eq", | ||
| ne: "ne", | ||
| lt: "lt", | ||
| gt: "gt", | ||
| lte: "lte", | ||
| gte: "gte", | ||
| }; | ||
|
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||
| /** | ||
| * Represents the result of visiting an operation or comparison | ||
| * expression. | ||
| */ | ||
| export type VisitorResult = VisitorOperationResult | VisitorComparisonResult; | ||
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| /** | ||
| * Represents the result of visiting an operation expression. | ||
| */ | ||
| export type VisitorOperationResult = { | ||
| [operator: string]: VisitorResult[]; | ||
| }; | ||
|
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| /** | ||
| * Represents the result of visiting a comparison expression. | ||
| */ | ||
| export type VisitorComparisonResult = { | ||
| [attr: string]: { | ||
| [comparator: string]: string | number; | ||
| }; | ||
| }; | ||
|
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| /** | ||
| * Represents the result of visiting a structured query expression. | ||
| */ | ||
| export type VisitorStructuredQueryResult = { | ||
| filter?: VisitorComparisonResult | VisitorOperationResult; | ||
| }; | ||
|
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| /** | ||
| * Abstract class for visiting expressions. Subclasses must implement | ||
| * visitOperation, visitComparison, and visitStructuredQuery methods. | ||
| */ | ||
| export abstract class Visitor<T extends VectorStore = VectorStore> { | ||
| declare VisitOperationOutput: object; | ||
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| declare VisitComparisonOutput: object; | ||
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| declare VisitStructuredQueryOutput: { filter?: T["FilterType"] }; | ||
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| abstract allowedOperators: Operator[]; | ||
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| abstract allowedComparators: Comparator[]; | ||
|
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| abstract visitOperation(operation: Operation): this["VisitOperationOutput"]; | ||
|
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| abstract visitComparison( | ||
| comparison: Comparison | ||
| ): this["VisitComparisonOutput"]; | ||
|
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| abstract visitStructuredQuery( | ||
| structuredQuery: StructuredQuery | ||
| ): this["VisitStructuredQueryOutput"]; | ||
| } | ||
|
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| /** | ||
| * Abstract class representing an expression. Subclasses must implement | ||
| * the exprName property and the accept method. | ||
| */ | ||
| export abstract class Expression { | ||
| abstract exprName: "Operation" | "Comparison" | "StructuredQuery"; | ||
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| accept(visitor: Visitor) { | ||
| if (this.exprName === "Operation") { | ||
| return visitor.visitOperation(this as unknown as Operation); | ||
| } else if (this.exprName === "Comparison") { | ||
| return visitor.visitComparison(this as unknown as Comparison); | ||
| } else if (this.exprName === "StructuredQuery") { | ||
| return visitor.visitStructuredQuery(this as unknown as StructuredQuery); | ||
| } else { | ||
| throw new Error("Unknown Expression type"); | ||
| } | ||
| } | ||
| } | ||
|
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| /** | ||
| * Abstract class representing a filter directive. It extends the | ||
| * Expression class. | ||
| */ | ||
| export abstract class FilterDirective extends Expression {} | ||
|
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| /** | ||
| * Class representing a comparison filter directive. It extends the | ||
| * FilterDirective class. | ||
| */ | ||
| export class Comparison extends FilterDirective { | ||
| exprName = "Comparison" as const; | ||
|
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||
| constructor( | ||
| public comparator: Comparator, | ||
| public attribute: string, | ||
| public value: string | number | ||
| ) { | ||
| super(); | ||
| } | ||
| } | ||
|
|
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| /** | ||
| * Class representing an operation filter directive. It extends the | ||
| * FilterDirective class. | ||
| */ | ||
| export class Operation extends FilterDirective { | ||
| exprName = "Operation" as const; | ||
|
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| constructor(public operator: Operator, public args?: FilterDirective[]) { | ||
| super(); | ||
| } | ||
| } | ||
|
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| /** | ||
| * Class representing a structured query expression. It extends the | ||
| * Expression class. | ||
| */ | ||
| export class StructuredQuery extends Expression { | ||
| exprName = "StructuredQuery" as const; | ||
|
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| constructor(public query: string, public filter?: FilterDirective) { | ||
| super(); | ||
| } | ||
| } | ||
| export * from "@langchain/core/structured_query"; |
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