From 6ba02d17d0fd50a826a7e81db1f9ca762ef1b387 Mon Sep 17 00:00:00 2001 From: Ivan Goncharov Date: Fri, 9 Apr 2021 16:03:21 +0300 Subject: [PATCH] Drop experimental online parser Drop in order to speedup and simplify TS convertion Plan is to clean it up (rewrite code, add tests, etc.) andd merge it back after 16.0.0 release. --- .../experimentalOnlineParser/README.md | 26 - .../experimentalOnlineParser/grammar.d.ts | 80 -- .../experimentalOnlineParser/grammar.js | 997 ------------------ .../experimentalOnlineParser/index.d.ts | 6 - .../experimentalOnlineParser/index.js | 6 - .../onlineParser.d.ts | 125 --- .../experimentalOnlineParser/onlineParser.js | 714 ------------- 7 files changed, 1954 deletions(-) delete mode 100644 src/language/experimentalOnlineParser/README.md delete mode 100644 src/language/experimentalOnlineParser/grammar.d.ts delete mode 100644 src/language/experimentalOnlineParser/grammar.js delete mode 100644 src/language/experimentalOnlineParser/index.d.ts delete mode 100644 src/language/experimentalOnlineParser/index.js delete mode 100644 src/language/experimentalOnlineParser/onlineParser.d.ts delete mode 100644 src/language/experimentalOnlineParser/onlineParser.js diff --git a/src/language/experimentalOnlineParser/README.md b/src/language/experimentalOnlineParser/README.md deleted file mode 100644 index dfcd9996d7..0000000000 --- a/src/language/experimentalOnlineParser/README.md +++ /dev/null @@ -1,26 +0,0 @@ -## Experimental Online Parser - -This directory contains an experimental online parser based on JSON rules set. It is a state-full parser which parses a source string incrementally i.e. emits a token each time. - -The parser is being migrated from graphiql to graphql-js and may have frequent breaking changes. - -Example: - -```js -import { OnlineParser } from 'graphql/language/experimentalOnlineParser'; - -const source = ` - query SomeQuery { - some_field { - another_field - } - } -`; - -const parser = new OnlineParser(source); -let token; - -do { - token = parser.parseToken(); -} while (token.kind !== '' && token.kind !== 'Invalid'); -``` diff --git a/src/language/experimentalOnlineParser/grammar.d.ts b/src/language/experimentalOnlineParser/grammar.d.ts deleted file mode 100644 index 9de6373a2e..0000000000 --- a/src/language/experimentalOnlineParser/grammar.d.ts +++ /dev/null @@ -1,80 +0,0 @@ -export interface GraphQLGrammarType { - [name: string]: GraphQLGrammarRule; -} - -export type GraphQLGrammarRule = - | GraphQLGrammarRuleName - | GraphQLGrammarRuleConstraint - | GraphQLGrammarConstraintsSet; - -export type GraphQLGrammarRuleName = string; - -export type GraphQLGrammarRuleConstraint = - | GraphQLGrammarTokenConstraint - | GraphQLGrammarOfTypeConstraint - | GraphQLGrammarListOfTypeConstraint - | GraphQLGrammarPeekConstraint; - -export type GraphQLGrammarConstraintsSet = Array< - GraphQLGrammarRuleName | GraphQLGrammarRuleConstraint ->; - -export interface GraphQLGrammarBaseRuleConstraint { - butNot?: GraphQLGrammarTokenConstraint | Array; - optional?: boolean; - eatNextOnFail?: boolean; -} - -export interface GraphQLGrammarTokenConstraint - extends GraphQLGrammarBaseRuleConstraint { - token: - | '!' - | '$' - | '&' - | '(' - | ')' - | '...' - | ':' - | '=' - | '@' - | '[' - | ']' - | '{' - | '}' - | '|' - | 'Name' - | 'Int' - | 'Float' - | 'String' - | 'BlockString' - | 'Comment'; - ofValue?: string; - oneOf?: Array; - tokenName?: string; - definitionName?: boolean; - typeName?: boolean; -} - -export interface GraphQLGrammarOfTypeConstraint - extends GraphQLGrammarBaseRuleConstraint { - ofType: GraphQLGrammarRule; - tokenName?: string; -} - -export interface GraphQLGrammarListOfTypeConstraint - extends GraphQLGrammarBaseRuleConstraint { - listOfType: GraphQLGrammarRuleName; -} - -export interface GraphQLGrammarPeekConstraint - extends GraphQLGrammarBaseRuleConstraint { - peek: Array; -} - -export interface GraphQLGrammarPeekConstraintCondition { - ifCondition: GraphQLGrammarTokenConstraint; - expect: GraphQLGrammarRule; - end?: boolean; -} - -export const grammar: GraphQLGrammarType; diff --git a/src/language/experimentalOnlineParser/grammar.js b/src/language/experimentalOnlineParser/grammar.js deleted file mode 100644 index ff1b7018af..0000000000 --- a/src/language/experimentalOnlineParser/grammar.js +++ /dev/null @@ -1,997 +0,0 @@ -export type GraphQLGrammarType = {| - [name: string]: GraphQLGrammarRule, -|}; -export type GraphQLGrammarRuleName = string; -export type GraphQLGrammarRuleConstraint = - | GraphQLGrammarTokenConstraint - | GraphQLGrammarOfTypeConstraint - | GraphQLGrammarListOfTypeConstraint - | GraphQLGrammarPeekConstraint; -export type GraphQLGrammarConstraintsSet = Array< - GraphQLGrammarRuleName | GraphQLGrammarRuleConstraint, ->; -export type GraphQLGrammarRule = - | GraphQLGrammarRuleName - | GraphQLGrammarRuleConstraint - | GraphQLGrammarConstraintsSet; -export interface GraphQLGrammarBaseRuleConstraint { - butNot?: - | ?GraphQLGrammarTokenConstraint - | ?Array; - optional?: boolean; - eatNextOnFail?: boolean; -} -export interface GraphQLGrammarTokenConstraint - extends GraphQLGrammarBaseRuleConstraint { - token: - | '!' - | '$' - | '&' - | '(' - | ')' - | '...' - | ':' - | '=' - | '@' - | '[' - | ']' - | '{' - | '}' - | '|' - | 'Name' - | 'Int' - | 'Float' - | 'String' - | 'BlockString' - | 'Comment'; - ofValue?: ?string; - oneOf?: ?Array; - tokenName?: string; - definitionName?: boolean; - typeName?: boolean; -} -export interface GraphQLGrammarOfTypeConstraint - extends GraphQLGrammarBaseRuleConstraint { - ofType: GraphQLGrammarRule; - tokenName?: string; -} -export interface GraphQLGrammarListOfTypeConstraint - extends GraphQLGrammarBaseRuleConstraint { - listOfType: GraphQLGrammarRuleName; -} -export interface GraphQLGrammarPeekConstraint - extends GraphQLGrammarBaseRuleConstraint { - peek: Array; -} -export interface GraphQLGrammarPeekConstraintCondition { - ifCondition: GraphQLGrammarTokenConstraint; - expect: GraphQLGrammarRule; - end?: boolean; -} - -export const grammar: GraphQLGrammarType = ({ - Name: { token: 'Name' }, - String: { token: 'String' }, - BlockString: { token: 'BlockString' }, - - Document: { listOfType: 'Definition' }, - Definition: { - peek: [ - { - ifCondition: { - token: 'Name', - oneOf: ['query', 'mutation', 'subscription'], - }, - expect: 'OperationDefinition', - }, - { - ifCondition: { token: 'Name', ofValue: 'fragment' }, - expect: 'FragmentDefinition', - }, - { - ifCondition: { - token: 'Name', - oneOf: [ - 'schema', - 'scalar', - 'type', - 'interface', - 'union', - 'enum', - 'input', - 'directive', - ], - }, - expect: 'TypeSystemDefinition', - }, - { - ifCondition: { token: 'Name', ofValue: 'extend' }, - expect: 'TypeSystemExtension', - }, - { - ifCondition: { token: '{' }, - expect: 'OperationDefinition', - }, - { - ifCondition: 'String', - expect: 'TypeSystemDefinition', - }, - { - ifCondition: 'BlockString', - expect: 'TypeSystemDefinition', - }, - ], - }, - - OperationDefinition: { - peek: [ - { - ifCondition: { token: '{' }, - expect: 'SelectionSet', - }, - { - ifCondition: { - token: 'Name', - oneOf: ['query', 'mutation', 'subscription'], - }, - expect: [ - 'OperationType', - { - token: 'Name', - optional: true, - tokenName: 'OperationName', - definitionName: true, - }, - { ofType: 'VariableDefinitions', optional: true }, - { ofType: 'Directives', optional: true }, - 'SelectionSet', - ], - }, - ], - }, - OperationType: { - ofType: 'OperationTypeName', - }, - OperationTypeName: { - token: 'Name', - oneOf: ['query', 'mutation', 'subscription'], - definitionName: true, - }, - SelectionSet: [{ token: '{' }, { listOfType: 'Selection' }, { token: '}' }], - Selection: { - peek: [ - { - ifCondition: { token: '...' }, - expect: 'Fragment', - }, - { - ifCondition: { token: 'Name' }, - expect: 'Field', - }, - ], - }, - - Field: [ - { - ofType: 'Alias', - optional: true, - eatNextOnFail: true, - definitionName: true, - }, - { token: 'Name', tokenName: 'FieldName', definitionName: true }, - { ofType: 'Arguments', optional: true }, - { ofType: 'Directives', optional: true }, - { ofType: 'SelectionSet', optional: true }, - ], - - Arguments: [{ token: '(' }, { listOfType: 'Argument' }, { token: ')' }], - Argument: [ - { token: 'Name', tokenName: 'ArgumentName', definitionName: true }, - { token: ':' }, - 'Value', - ], - - Alias: [ - { token: 'Name', tokenName: 'AliasName', definitionName: true }, - { token: ':' }, - ], - - Fragment: [ - { token: '...' }, - { - peek: [ - { - ifCondition: 'FragmentName', - expect: 'FragmentSpread', - }, - { - ifCondition: { token: 'Name', ofValue: 'on' }, - expect: 'InlineFragment', - }, - { - ifCondition: { token: '@' }, - expect: 'InlineFragment', - }, - { - ifCondition: { token: '{' }, - expect: 'InlineFragment', - }, - ], - }, - ], - - FragmentSpread: ['FragmentName', { ofType: 'Directives', optional: true }], - FragmentDefinition: [ - { - token: 'Name', - ofValue: 'fragment', - tokenName: 'FragmentDefinitionKeyword', - }, - 'FragmentName', - 'TypeCondition', - { ofType: 'Directives', optional: true }, - 'SelectionSet', - ], - FragmentName: { - token: 'Name', - butNot: { token: 'Name', ofValue: 'on' }, - definitionName: true, - }, - - TypeCondition: [ - { token: 'Name', ofValue: 'on', tokenName: 'OnKeyword' }, - 'TypeName', - ], - - InlineFragment: [ - { ofType: 'TypeCondition', optional: true }, - { ofType: 'Directives', optional: true }, - 'SelectionSet', - ], - - Value: { - peek: [ - { - ifCondition: { token: '$' }, - expect: 'Variable', - }, - { - ifCondition: 'IntValue', - expect: { ofType: 'IntValue', tokenName: 'NumberValue' }, - }, - { - ifCondition: 'FloatValue', - expect: { ofType: 'FloatValue', tokenName: 'NumberValue' }, - }, - { - ifCondition: 'BooleanValue', - expect: { ofType: 'BooleanValue', tokenName: 'BooleanValue' }, - }, - { - ifCondition: 'EnumValue', - expect: { ofType: 'EnumValue', tokenName: 'EnumValue' }, - }, - { - ifCondition: 'String', - expect: { ofType: 'String', tokenName: 'StringValue' }, - }, - { - ifCondition: 'BlockString', - expect: { ofType: 'BlockString', tokenName: 'StringValue' }, - }, - { - ifCondition: 'NullValue', - expect: { ofType: 'NullValue', tokenName: 'NullValue' }, - }, - { - ifCondition: { token: '[' }, - expect: 'ListValue', - }, - { - ifCondition: { token: '{' }, - expect: 'ObjectValue', - }, - ], - }, - - ConstValue: { - peek: [ - { - ifCondition: 'IntValue', - expect: { ofType: 'IntValue' }, - }, - { - ifCondition: 'FloatValue', - expect: { ofType: 'FloatValue' }, - }, - { - ifCondition: 'BooleanValue', - expect: 'BooleanValue', - }, - { - ifCondition: 'EnumValue', - expect: 'EnumValue', - }, - { - ifCondition: 'String', - expect: { ofType: 'String', tokenName: 'StringValue' }, - }, - { - ifCondition: 'BlockString', - expect: { token: 'BlockString', tokenName: 'StringValue' }, - }, - { - ifCondition: 'NullValue', - expect: 'NullValue', - }, - { - ifCondition: { token: '[' }, - expect: 'ConstListValue', - }, - { - ifCondition: { token: '{' }, - expect: 'ObjectValue', - }, - ], - }, - - IntValue: { token: 'Int' }, - - FloatValue: { token: 'Float' }, - - StringValue: { - peek: [ - { - ifCondition: { token: 'String' }, - expect: { token: 'String', tokenName: 'StringValue' }, - }, - { - ifCondition: { token: 'BlockString' }, - expect: { token: 'BlockString', tokenName: 'StringValue' }, - }, - ], - }, - - BooleanValue: { - token: 'Name', - oneOf: ['true', 'false'], - tokenName: 'BooleanValue', - }, - - NullValue: { - token: 'Name', - ofValue: 'null', - tokenName: 'NullValue', - }, - - EnumValue: { - token: 'Name', - butNot: { token: 'Name', oneOf: ['null', 'true', 'false'] }, - tokenName: 'EnumValue', - }, - - ListValue: [ - { token: '[' }, - { listOfType: 'Value', optional: true }, - { token: ']' }, - ], - - ConstListValue: [ - { token: '[' }, - { listOfType: 'ConstValue', optional: true }, - { token: ']' }, - ], - - ObjectValue: [ - { token: '{' }, - { listOfType: 'ObjectField', optional: true }, - { token: '}' }, - ], - ObjectField: [ - { token: 'Name', tokenName: 'ObjectFieldName' }, - { token: ':' }, - { ofType: 'ConstValue' }, - ], - - Variable: [ - { token: '$', tokenName: 'VariableName' }, - { token: 'Name', tokenName: 'VariableName' }, - ], - VariableDefinitions: [ - { token: '(' }, - { listOfType: 'VariableDefinition' }, - { token: ')' }, - ], - VariableDefinition: [ - 'Variable', - { token: ':' }, - 'Type', - { ofType: 'DefaultValue', optional: true }, - ], - DefaultValue: [{ token: '=' }, 'ConstValue'], - - TypeName: { token: 'Name', tokenName: 'TypeName', typeName: true }, - - Type: { - peek: [ - { - ifCondition: { token: 'Name' }, - expect: ['TypeName', { token: '!', optional: true }], - }, - { - ifCondition: { token: '[' }, - expect: 'ListType', - }, - ], - }, - ListType: [ - { token: '[' }, - { listOfType: 'Type' }, - { token: ']' }, - { token: '!', optional: true }, - ], - - Directives: { listOfType: 'Directive' }, - Directive: [ - { token: '@', tokenName: 'DirectiveName' }, - { token: 'Name', tokenName: 'DirectiveName' }, - { ofType: 'Arguments', optional: true }, - ], - - TypeSystemDefinition: [ - { ofType: 'Description', optional: true }, - { - peek: [ - { - ifCondition: { - target: 'Name', - ofValue: 'schema', - }, - expect: 'SchemaDefinition', - }, - { - ifCondition: { - target: 'Name', - ofValue: 'scalar', - }, - expect: 'ScalarTypeDefinition', - }, - { - ifCondition: { - target: 'Name', - ofValue: 'type', - }, - expect: 'ObjectTypeDefinition', - }, - { - ifCondition: { - target: 'Name', - ofValue: 'interface', - }, - expect: 'InterfaceTypeDefinition', - }, - { - ifCondition: { - target: 'Name', - ofValue: 'union', - }, - expect: 'UnionTypeDefinition', - }, - { - ifCondition: { - target: 'Name', - ofValue: 'enum', - }, - expect: 'EnumTypeDefinition', - }, - { - ifCondition: { - target: 'Name', - ofValue: 'input', - }, - expect: 'InputObjectTypeDefinition', - }, - { - ifCondition: { - target: 'Name', - ofValue: 'directive', - }, - expect: 'DirectiveDefinition', - }, - ], - }, - ], - - TypeSystemExtension: { - peek: [ - { - ifCondition: { - target: 'Name', - ofValue: 'schema', - }, - expect: 'SchemaExtension', - }, - { - ifCondition: { - target: 'Name', - ofValue: 'scalar', - }, - expect: 'ScalarTypeExtension', - }, - { - ifCondition: { - target: 'Name', - ofValue: 'type', - }, - expect: 'ObjectTypeExtension', - }, - { - ifCondition: { - target: 'Name', - ofValue: 'interface', - }, - expect: 'InterfaceTypeExtension', - }, - { - ifCondition: { - target: 'Name', - ofValue: 'union', - }, - expect: 'UnionTypeExtension', - }, - { - ifCondition: { - target: 'Name', - ofValue: 'enum', - }, - expect: 'EnumTypeExtension', - }, - { - ifCondition: { - target: 'Name', - ofValue: 'input', - }, - expect: 'InputObjectTypeExtension', - }, - ], - }, - - SchemaDefinition: [ - { - token: 'Name', - ofValue: 'schema', - tokenName: 'SchemaDefinitionKeyword', - }, - { ofType: 'Directives', optional: true }, - { token: '{' }, - { listOfType: 'RootOperationTypeDefinition' }, - { token: '}' }, - ], - RootOperationTypeDefinition: [ - 'OperationType', - { token: ':' }, - { token: 'Name', tokenName: 'OperationTypeDefinitionName' }, - ], - - SchemaExtension: [ - { token: 'Name', ofValue: 'extend' }, - { token: 'Name', ofValue: 'schema' }, - 'Name', - { - peek: [ - { - ifCondition: { token: '@' }, - expect: [ - 'Directives', - { - ofType: [ - { token: '{' }, - { listOfType: 'RootOperationTypeDefinition' }, - { token: '}' }, - ], - optional: true, - }, - ], - }, - { - ifCondition: { token: '{' }, - expect: [ - { token: '{' }, - { listOfType: 'RootOperationTypeDefinition' }, - { token: '}' }, - ], - }, - ], - }, - ], - - Description: 'StringValue', - - ScalarTypeDefinition: [ - { ofType: 'Description', optional: true }, - { - token: 'Name', - ofValue: 'scalar', - tokenName: 'ScalarDefinitionKeyword', - }, - 'TypeName', - { ofType: 'Directives', optional: true }, - ], - - ScalarTypeExtension: [ - { - token: 'Name', - ofValue: 'extend', - tokenName: 'ExtendDefinitionKeyword', - }, - { - token: 'Name', - ofValue: 'scalar', - tokenName: 'ScalarDefinitionKeyword', - }, - 'TypeName', - 'Directives', - ], - - ObjectTypeDefinition: [ - { ofType: 'Description', optional: true }, - { - token: 'Name', - ofValue: 'type', - tokenName: 'TypeDefinitionKeyword', - }, - 'TypeName', - { ofType: 'ImplementsInterfaces', optional: true }, - { ofType: 'Directives', optional: true }, - { ofType: 'FieldsDefinition', optional: true }, - ], - ImplementsInterfaces: [ - { - token: 'Name', - ofValue: 'implements', - tokenName: 'ImplementsKeyword', - }, - { token: '&', optional: true }, - 'TypeName', - { - listOfType: 'ImplementsAdditionalInterfaceName', - optional: true, - }, - ], - ImplementsAdditionalInterfaceName: [{ token: '&' }, 'TypeName'], - FieldsDefinition: [ - { token: '{' }, - { listOfType: 'FieldDefinition' }, - { token: '}' }, - ], - FieldDefinition: [ - { ofType: 'Description', optional: true }, - { token: 'Name', tokenName: 'AliasName', definitionName: true }, - { ofType: 'ArgumentsDefinition', optional: true }, - { token: ':' }, - 'Type', - { ofType: 'Directives', optional: true }, - ], - - ArgumentsDefinition: [ - { token: '(' }, - { listOfType: 'InputValueDefinition' }, - { token: ')' }, - ], - InputValueDefinition: [ - { ofType: 'Description', optional: true }, - { token: 'Name', tokenName: 'ArgumentName' }, - { token: ':' }, - 'Type', - { ofType: 'DefaultValue', optional: true }, - { ofType: 'Directives', optional: true }, - ], - - ObjectTypeExtension: [ - { - token: 'Name', - ofValue: 'extend', - tokenName: 'ExtendDefinitionKeyword', - }, - { - token: 'Name', - ofValue: 'type', - tokenName: 'TypeDefinitionKeyword', - }, - 'TypeName', - { - peek: [ - { - ifCondition: { token: 'Name', ofValue: 'interface' }, - expect: [ - 'ImplementsInterfaces', - { - peek: [ - { - ifCondition: { token: '@' }, - expect: [ - 'Directives', - { ofType: 'FieldsDefinition', optional: true }, - ], - }, - { - ifCondition: { token: '{' }, - expect: 'FieldsDefinition', - }, - ], - optional: true, - }, - ], - }, - { - ifCondition: { token: '@' }, - expect: [ - 'Directives', - { ofType: 'FieldsDefinition', optional: true }, - ], - }, - { - ifCondition: { token: '{' }, - expect: 'FieldsDefinition', - }, - ], - }, - ], - - InterfaceTypeDefinition: [ - { ofType: 'Description', optional: true }, - { - token: 'Name', - ofValue: 'interface', - tokenName: 'InterfaceDefinitionKeyword', - }, - 'TypeName', - { ofType: 'Directives', optional: true }, - { ofType: 'FieldsDefinition', optional: true }, - ], - - InterfaceTypeExtension: [ - { - token: 'Name', - ofValue: 'extend', - tokenName: 'ExtendDefinitionKeyword', - }, - { - token: 'Name', - ofValue: 'interface', - tokenName: 'InterfaceDefinitionKeyword', - }, - 'TypeName', - { - peek: [ - { - ifCondition: { token: '@' }, - expect: [ - 'Directives', - { ofType: 'FieldsDefinition', optional: true }, - ], - }, - { - ifCondition: { token: '{' }, - expect: 'FieldsDefinition', - }, - ], - }, - ], - - UnionTypeDefinition: [ - { ofType: 'Description', optional: true }, - { - token: 'Name', - ofValue: 'union', - tokenName: 'UnionDefinitionKeyword', - }, - 'TypeName', - { ofType: 'Directives', optional: true }, - { ofType: 'UnionMemberTypes', optional: true }, - ], - - UnionMemberTypes: [ - { token: '=' }, - { token: '|', optional: true }, - 'Name', - { - listOfType: 'UnionMemberAdditionalTypeName', - optional: true, - }, - ], - - UnionMemberAdditionalTypeName: [{ token: '|' }, 'TypeName'], - - UnionTypeExtension: [ - { - token: 'Name', - ofValue: 'extend', - tokenName: 'ExtendDefinitionKeyword', - }, - { - token: 'Name', - ofValue: 'union', - tokenName: 'UnionDefinitionKeyword', - }, - 'TypeName', - { - peek: [ - { - ifCondition: { token: '@' }, - expect: [ - 'Directives', - { ofType: 'UnionMemberTypes', optional: true }, - ], - }, - { - ifCondition: { token: '=' }, - expect: 'UnionMemberTypes', - }, - ], - }, - ], - - EnumTypeDefinition: [ - { ofType: 'Description', optional: true }, - { - token: 'Name', - ofValue: 'enum', - tokenName: 'EnumDefinitionKeyword', - }, - 'TypeName', - { ofType: 'Directives', optional: true }, - { ofType: 'EnumValuesDefinition', optional: true }, - ], - EnumValuesDefinition: [ - { token: '{' }, - { listOfType: 'EnumValueDefinition' }, - { token: '}' }, - ], - EnumValueDefinition: [ - { ofType: 'Description', optional: true }, - 'EnumValue', - { ofType: 'Directives', optional: true }, - ], - - EnumTypeExtension: [ - { - token: 'Name', - ofValue: 'extend', - tokenName: 'ExtendDefinitionKeyword', - }, - { - token: 'Name', - ofValue: 'enum', - tokenName: 'EnumDefinitionKeyword', - }, - 'TypeName', - { - peek: [ - { - ifCondition: { token: '@' }, - expect: [ - 'Directives', - { ofType: 'EnumValuesDefinition', optional: true }, - ], - }, - { - ifCondition: { token: '{' }, - expect: 'EnumValuesDefinition', - }, - ], - }, - ], - - InputObjectTypeDefinition: [ - { ofType: 'Description', optional: true }, - { - token: 'Name', - ofValue: 'input', - tokenName: 'InputDefinitionKeyword', - }, - 'TypeName', - { ofType: 'Directives', optional: true }, - { ofType: 'InputFieldsDefinition', optional: true }, - ], - InputFieldsDefinition: [ - { token: '{' }, - { listOfType: 'InputValueDefinition' }, - { token: '}' }, - ], - - InputObjectTypeExtension: [ - { - token: 'Name', - ofValue: 'extend', - tokenName: 'ExtendDefinitionKeyword', - }, - { - token: 'Name', - ofValue: 'input', - tokenName: 'InputDefinitionKeyword', - }, - 'TypeName', - { - peek: [ - { - ifCondition: { token: '@' }, - expect: [ - 'Directives', - { ofType: 'InputFieldsDefinition', optional: true }, - ], - }, - { - ifCondition: { token: '{' }, - expect: 'InputFieldsDefinition', - }, - ], - }, - ], - - DirectiveDefinition: [ - { ofType: 'Description', optional: true }, - { - token: 'Name', - ofValue: 'directive', - tokenName: 'DirectiveDefinitionKeyword', - }, - { token: '@', tokenName: 'DirectiveName' }, - { token: 'Name', tokenName: 'DirectiveName' }, - { ofType: 'ArgumentsDefinition', optional: true }, - { token: 'Name', ofValue: 'on', tokenName: 'OnKeyword' }, - 'DirectiveLocations', - ], - DirectiveLocations: [ - { token: '|', optional: true }, - 'DirectiveLocation', - { - listOfType: 'DirectiveLocationAdditionalName', - optional: true, - }, - ], - DirectiveLocationAdditionalName: [{ token: '|' }, 'DirectiveLocation'], - DirectiveLocation: { - peek: [ - { - ifCondition: 'ExecutableDirectiveLocation', - expect: 'ExecutableDirectiveLocation', - }, - { - ifCondition: 'TypeSystemDirectiveLocation', - expect: 'TypeSystemDirectiveLocation', - }, - ], - }, - ExecutableDirectiveLocation: { - token: 'Name', - oneOf: [ - 'QUERY', - 'MUTATION', - 'SUBSCRIPTION', - 'FIELD', - 'FRAGMENT_DEFINITION', - 'FRAGMENT_SPREAD', - 'INLINE_FRAGMENT', - ], - tokenName: 'EnumValue', - }, - TypeSystemDirectiveLocation: { - token: 'Name', - oneOf: [ - 'SCHEMA', - 'SCALAR', - 'OBJECT', - 'FIELD_DEFINITION', - 'ARGUMENT_DEFINITION', - 'INTERFACE', - 'UNION', - 'ENUM', - 'ENUM_VALUE', - 'INPUT_OBJECT', - 'INPUT_FIELD_DEFINITION', - ], - tokenName: 'EnumValue', - }, - // FIXME: enforce proper typing -}: any); diff --git a/src/language/experimentalOnlineParser/index.d.ts b/src/language/experimentalOnlineParser/index.d.ts deleted file mode 100644 index 039446a16c..0000000000 --- a/src/language/experimentalOnlineParser/index.d.ts +++ /dev/null @@ -1,6 +0,0 @@ -export { - OnlineParser, - RuleKind, - TokenKind, - OnlineParserState, -} from './onlineParser'; diff --git a/src/language/experimentalOnlineParser/index.js b/src/language/experimentalOnlineParser/index.js deleted file mode 100644 index 039446a16c..0000000000 --- a/src/language/experimentalOnlineParser/index.js +++ /dev/null @@ -1,6 +0,0 @@ -export { - OnlineParser, - RuleKind, - TokenKind, - OnlineParserState, -} from './onlineParser'; diff --git a/src/language/experimentalOnlineParser/onlineParser.d.ts b/src/language/experimentalOnlineParser/onlineParser.d.ts deleted file mode 100644 index 9570b9e589..0000000000 --- a/src/language/experimentalOnlineParser/onlineParser.d.ts +++ /dev/null @@ -1,125 +0,0 @@ -import { Lexer } from '../lexer'; - -import { - GraphQLGrammarTokenConstraint, - GraphQLGrammarOfTypeConstraint, - GraphQLGrammarListOfTypeConstraint, - GraphQLGrammarPeekConstraint, - GraphQLGrammarConstraintsSet, -} from './grammar'; - -interface BaseOnlineParserRule { - kind: string; - name?: string; - depth: number; - step: number; - expanded: boolean; - state: string; - optional?: boolean; - eatNextOnFail?: boolean; -} -interface TokenOnlineParserRule - extends BaseOnlineParserRule, - GraphQLGrammarTokenConstraint {} -interface OfTypeOnlineParserRule - extends BaseOnlineParserRule, - GraphQLGrammarOfTypeConstraint {} -interface ListOfTypeOnlineParserRule - extends BaseOnlineParserRule, - GraphQLGrammarListOfTypeConstraint {} -interface PeekOnlineParserRule - extends BaseOnlineParserRule, - GraphQLGrammarPeekConstraint { - index: number; - matched: boolean; -} -interface ConstraintsSetOnlineParserRule extends BaseOnlineParserRule { - constraintsSet: boolean; - constraints: GraphQLGrammarConstraintsSet; -} - -type OnlineParserRule = - | TokenOnlineParserRule - | OfTypeOnlineParserRule - | ListOfTypeOnlineParserRule - | PeekOnlineParserRule - | ConstraintsSetOnlineParserRule; - -export interface OnlineParserState { - rules: Array; - kind: () => string; - step: () => number; - levels: Array; - indentLevel: number | undefined; - name: string | null; - type: string | null; -} - -interface Token { - kind: string; - value?: string; - tokenName?: string | undefined; - ruleName?: string | undefined; -} - -type OnlineParserConfig = { - tabSize: number; -}; - -type OnlineParserConfigOption = { - tabSize?: number; -}; - -export class OnlineParser { - state: OnlineParserState; - _lexer: Lexer; - _config: OnlineParserConfig; - constructor( - source: string, - state?: OnlineParserState, - config?: OnlineParserConfigOption, - ); - static startState(): OnlineParserState; - static copyState(state: OnlineParserState): OnlineParserState; - sol(): boolean; - parseToken(): Token; - indentation(): number; - private readonly _parseTokenConstraint; - private readonly _parseListOfTypeConstraint; - private readonly _parseOfTypeConstraint; - private readonly _parsePeekConstraint; - private readonly _parseConstraintsSetRule; - private readonly _matchToken; - private readonly _butNot; - private readonly _transformLexerToken; - private readonly _getNextRule; - private readonly _popMatchedRule; - private readonly _rollbackRule; - private readonly _pushRule; - private readonly _getRuleKind; - private readonly _advanceToken; - private readonly _lookAhead; -} - -export const TokenKind: { - NAME: string; - INT: string; - FLOAT: string; - STRING: string; - BLOCK_STRING: string; - COMMENT: string; - PUNCTUATION: string; - EOF: string; - INVALID: string; -}; - -export const RuleKind: { - TOKEN_CONSTRAINT: string; - OF_TYPE_CONSTRAINT: string; - LIST_OF_TYPE_CONSTRAINT: string; - PEEK_CONSTRAINT: string; - CONSTRAINTS_SET: string; - CONSTRAINTS_SET_ROOT: string; - RULE_NAME: string; - INVALID: string; -}; diff --git a/src/language/experimentalOnlineParser/onlineParser.js b/src/language/experimentalOnlineParser/onlineParser.js deleted file mode 100644 index 92a9c667d0..0000000000 --- a/src/language/experimentalOnlineParser/onlineParser.js +++ /dev/null @@ -1,714 +0,0 @@ -import { Lexer } from '../lexer'; -import { Source } from '../source'; - -import { grammar } from './grammar'; -import type { - GraphQLGrammarRule, - GraphQLGrammarRuleName, - GraphQLGrammarRuleConstraint, - GraphQLGrammarTokenConstraint, - GraphQLGrammarOfTypeConstraint, - GraphQLGrammarListOfTypeConstraint, - GraphQLGrammarPeekConstraint, - GraphQLGrammarConstraintsSet, -} from './grammar'; - -export const TokenKind = { - NAME: 'Name', - INT: 'Int', - FLOAT: 'Float', - STRING: 'String', - BLOCK_STRING: 'BlockString', - COMMENT: 'Comment', - PUNCTUATION: 'Punctuation', - EOF: '', - INVALID: 'Invalid', -}; - -export const RuleKind = { - TOKEN_CONSTRAINT: 'TokenConstraint', - OF_TYPE_CONSTRAINT: 'OfTypeConstraint', - LIST_OF_TYPE_CONSTRAINT: 'ListOfTypeConstraint', - PEEK_CONSTRAINT: 'PeekConstraint', - CONSTRAINTS_SET: 'ConstraintsSet', - CONSTRAINTS_SET_ROOT: 'ConstraintsSetRoot', - RULE_NAME: 'RuleName', - INVALID: 'Invalid', -}; - -interface BaseOnlineParserRule { - kind: string; - name?: string; - depth: number; - step: number; - expanded: boolean; - state: string; - optional?: boolean; - eatNextOnFail?: boolean; -} -interface TokenOnlineParserRule - extends BaseOnlineParserRule, - GraphQLGrammarTokenConstraint {} -interface OfTypeOnlineParserRule - extends BaseOnlineParserRule, - GraphQLGrammarOfTypeConstraint {} -interface ListOfTypeOnlineParserRule - extends BaseOnlineParserRule, - GraphQLGrammarListOfTypeConstraint {} -interface PeekOnlineParserRule - extends BaseOnlineParserRule, - GraphQLGrammarPeekConstraint { - index: number; - matched: boolean; -} -interface ConstraintsSetOnlineParserRule extends BaseOnlineParserRule { - constraintsSet: boolean; - constraints: GraphQLGrammarConstraintsSet; -} - -type OnlineParserRule = - | TokenOnlineParserRule - | OfTypeOnlineParserRule - | ListOfTypeOnlineParserRule - | PeekOnlineParserRule - | ConstraintsSetOnlineParserRule; - -export type OnlineParserState = {| - rules: Array, - kind: () => string, - step: () => number, - levels: Array, - indentLevel: number, - name: string | null, - type: string | null, -|}; - -type Token = {| - kind: string, - value: string, - tokenName?: ?string, - ruleName?: ?string, -|}; - -type LexerToken = {| - kind: string, - value: ?string, -|}; - -type OnlineParserConfig = {| - tabSize: number, -|}; - -type OnlineParserConfigOption = {| - tabSize: ?number, -|}; - -export class OnlineParser { - state: OnlineParserState; - _lexer: Lexer; - _config: OnlineParserConfig; - - constructor( - source: string, - state?: OnlineParserState, - config?: OnlineParserConfigOption, - ) { - this.state = state || OnlineParser.startState(); - this._config = { - tabSize: config?.tabSize ?? 2, - }; - this._lexer = new Lexer(new Source(source)); - } - - static startState(): OnlineParserState { - return { - rules: [ - // $FlowFixMe[cannot-spread-interface] - { - name: 'Document', - state: 'Document', - kind: 'ListOfTypeConstraint', - ...grammar.Document, - expanded: false, - depth: 1, - step: 1, - }, - ], - name: null, - type: null, - levels: [], - indentLevel: 0, - kind(): string { - return this.rules[this.rules.length - 1]?.state || ''; - }, - step(): number { - return this.rules[this.rules.length - 1]?.step || 0; - }, - }; - } - - static copyState(state: OnlineParserState): OnlineParserState { - return { - name: state.name, - type: state.type, - rules: JSON.parse(JSON.stringify(state.rules)), - levels: [...state.levels], - indentLevel: state.indentLevel, - kind(): string { - return this.rules[this.rules.length - 1]?.state || ''; - }, - step(): number { - return this.rules[this.rules.length - 1]?.step || 0; - }, - }; - } - - sol(): boolean { - return ( - this._lexer.source.locationOffset.line === 1 && - this._lexer.source.locationOffset.column === 1 - ); - } - - parseToken(): Token { - const rule = (this._getNextRule(): any); - - if (this.sol()) { - this.state.indentLevel = Math.floor( - this.indentation() / this._config.tabSize, - ); - } - - if (!rule) { - return { - kind: TokenKind.INVALID, - value: '', - }; - } - - let token; - - if (this._lookAhead().kind === '') { - return { - kind: TokenKind.EOF, - value: '', - ruleName: rule.name, - }; - } - - switch (rule.kind) { - case RuleKind.TOKEN_CONSTRAINT: - token = this._parseTokenConstraint(rule); - break; - case RuleKind.LIST_OF_TYPE_CONSTRAINT: - token = this._parseListOfTypeConstraint(rule); - break; - case RuleKind.OF_TYPE_CONSTRAINT: - token = this._parseOfTypeConstraint(rule); - break; - case RuleKind.PEEK_CONSTRAINT: - token = this._parsePeekConstraint(rule); - break; - case RuleKind.CONSTRAINTS_SET_ROOT: - token = this._parseConstraintsSetRule(rule); - break; - default: - return { - kind: TokenKind.INVALID, - value: '', - ruleName: rule.name, - }; - } - - if (token && token.kind === TokenKind.INVALID) { - if (rule.optional === true) { - this.state.rules.pop(); - } else { - this._rollbackRule(); - } - - return this.parseToken() || token; - } - - return token; - } - - indentation(): number { - const match = /\s*/.exec(this._lexer.source.body); - let indent = 0; - - if (match && match.length === 0) { - const whiteSpaces = match[0]; - let pos = 0; - while (whiteSpaces.length > pos) { - if (whiteSpaces.charCodeAt(pos) === 9) { - indent += 2; - } else { - indent++; - } - pos++; - } - } - - return indent; - } - - _parseTokenConstraint(rule: TokenOnlineParserRule): Token { - rule.expanded = true; - - const token = this._lookAhead(); - - if (!this._matchToken(token, rule)) { - return { - kind: TokenKind.INVALID, - value: '', - tokenName: rule.tokenName, - ruleName: rule.name, - }; - } - - this._advanceToken(); - const parserToken = this._transformLexerToken(token, rule); - this._popMatchedRule(parserToken); - - return parserToken; - } - - _parseListOfTypeConstraint(rule: ListOfTypeOnlineParserRule): Token { - this._pushRule( - grammar[rule.listOfType], - rule.depth + 1, - rule.listOfType, - 1, - rule.state, - ); - - rule.expanded = true; - - const token = this.parseToken(); - - return token; - } - - _parseOfTypeConstraint(rule: OfTypeOnlineParserRule): Token { - if (rule.expanded) { - this._popMatchedRule(); - return this.parseToken(); - } - - this._pushRule(rule.ofType, rule.depth + 1, rule.tokenName, 1, rule.state); - rule.expanded = true; - - const token = this.parseToken(); - - return token; - } - - _parsePeekConstraint(rule: PeekOnlineParserRule): Token { - if (rule.expanded) { - this._popMatchedRule(); - return this.parseToken(); - } - - while (!rule.matched && rule.index < rule.peek.length - 1) { - rule.index++; - const constraint = rule.peek[rule.index]; - - let { ifCondition } = constraint; - if (typeof ifCondition === 'string') { - ifCondition = grammar[ifCondition]; - } - - let token = this._lookAhead(); - if (ifCondition && this._matchToken(token, ifCondition)) { - rule.matched = true; - rule.expanded = true; - this._pushRule(constraint.expect, rule.depth + 1, '', 1, rule.state); - - token = this.parseToken(); - - return token; - } - } - - return { - kind: TokenKind.INVALID, - value: '', - ruleName: rule.name, - }; - } - - _parseConstraintsSetRule(rule: ConstraintsSetOnlineParserRule): Token { - if (rule.expanded) { - this._popMatchedRule(); - return this.parseToken(); - } - - for (let index = rule.constraints.length - 1; index >= 0; index--) { - this._pushRule( - rule.constraints[index], - rule.depth + 1, - '', - index, - rule.state, - ); - } - rule.expanded = true; - - return this.parseToken(); - } - - _matchToken( - token: Token | LexerToken, - rule: GraphQLGrammarTokenConstraint, - ): boolean { - if (typeof token.value === 'string') { - if ( - (typeof rule.ofValue === 'string' && token.value !== rule.ofValue) || - (Array.isArray(rule.oneOf) && !rule.oneOf.includes(token.value)) || - (typeof rule.ofValue !== 'string' && - !Array.isArray(rule.oneOf) && - token.kind !== rule.token) - ) { - return false; - } - - return this._butNot(token, rule); - } - - if (token.kind !== rule.token) { - return false; - } - - return this._butNot(token, rule); - } - - _butNot( - token: Token | LexerToken, - rule: GraphQLGrammarRuleConstraint, - ): boolean { - if (rule.butNot) { - if (Array.isArray(rule.butNot)) { - return !rule.butNot.some((constraint) => - this._matchToken(token, constraint), - ); - } - - return !this._matchToken(token, rule.butNot); - } - - return true; - } - - _transformLexerToken(lexerToken: LexerToken, rule: any): Token { - let token; - const ruleName = rule.name || ''; - const tokenName = rule.tokenName || ''; - - if (lexerToken.kind === '' || lexerToken.value !== undefined) { - token = { - kind: lexerToken.kind, - value: lexerToken.value || '', - tokenName, - ruleName, - }; - - if (token.kind === TokenKind.STRING) { - token.value = `"${token.value}"`; - } else if (token.kind === TokenKind.BLOCK_STRING) { - token.value = `"""${token.value}"""`; - } - } else { - token = { - kind: TokenKind.PUNCTUATION, - value: lexerToken.kind, - tokenName, - ruleName, - }; - - if (/^[{([]/.test(token.value)) { - if (this.state.indentLevel !== undefined) { - this.state.levels = this.state.levels.concat( - this.state.indentLevel + 1, - ); - } - } else if (/^[})\]]/.test(token.value)) { - this.state.levels.pop(); - } - } - - return token; - } - - _getNextRule(): OnlineParserRule | null { - return this.state.rules[this.state.rules.length - 1] || null; - } - - _popMatchedRule(token: ?Token) { - const rule = this.state.rules.pop(); - if (!rule) { - return; - } - - if (token && rule.kind === RuleKind.TOKEN_CONSTRAINT) { - const constraint = rule; - if (typeof constraint.definitionName === 'string') { - this.state.name = token.value || null; - } else if (typeof constraint.typeName === 'string') { - this.state.type = token.value || null; - } - } - - const nextRule = this._getNextRule(); - if (!nextRule) { - return; - } - - if ( - nextRule.depth === rule.depth - 1 && - nextRule.expanded && - nextRule.kind === RuleKind.CONSTRAINTS_SET_ROOT - ) { - this.state.rules.pop(); - } - - if ( - nextRule.depth === rule.depth - 1 && - nextRule.expanded && - nextRule.kind === RuleKind.LIST_OF_TYPE_CONSTRAINT - ) { - nextRule.expanded = false; - nextRule.optional = true; - } - } - - _rollbackRule() { - if (!this.state.rules.length) { - return; - } - - const popRule = () => { - const lastPoppedRule = this.state.rules.pop(); - - if (lastPoppedRule.eatNextOnFail === true) { - this.state.rules.pop(); - } - }; - - const poppedRule = this.state.rules.pop(); - if (!poppedRule) { - return; - } - - let popped = 0; - let nextRule = this._getNextRule(); - while ( - nextRule && - (poppedRule.kind !== RuleKind.LIST_OF_TYPE_CONSTRAINT || - nextRule.expanded) && - nextRule.depth > poppedRule.depth - 1 - ) { - this.state.rules.pop(); - popped++; - nextRule = this._getNextRule(); - } - - if (nextRule && nextRule.expanded) { - if (nextRule.optional === true) { - popRule(); - } else { - if ( - nextRule.kind === RuleKind.LIST_OF_TYPE_CONSTRAINT && - popped === 1 - ) { - this.state.rules.pop(); - return; - } - this._rollbackRule(); - } - } - } - - _pushRule( - baseRule: any, - depth: number, - name?: string, - step?: number, - state?: string, - ) { - this.state.name = null; - this.state.type = null; - let rule = baseRule; - - switch (this._getRuleKind(rule)) { - case RuleKind.RULE_NAME: - rule = (rule: GraphQLGrammarRuleName); - this._pushRule( - grammar[rule], - depth, - (typeof name === 'string' ? name : undefined) || rule, - step, - state, - ); - break; - case RuleKind.CONSTRAINTS_SET: - rule = (rule: GraphQLGrammarConstraintsSet); - this.state.rules.push({ - name: name || '', - depth, - expanded: false, - constraints: rule, - constraintsSet: true, - kind: RuleKind.CONSTRAINTS_SET_ROOT, - state: - (typeof name === 'string' ? name : undefined) || - (typeof state === 'string' ? state : undefined) || - this._getNextRule()?.state || - '', - step: - typeof step === 'number' - ? step - : (this._getNextRule()?.step || 0) + 1, - }); - break; - case RuleKind.OF_TYPE_CONSTRAINT: - rule = (rule: GraphQLGrammarOfTypeConstraint); - this.state.rules.push({ - name: name || '', - ofType: rule.ofType, - optional: Boolean(rule.optional), - butNot: rule.butNot, - eatNextOnFail: Boolean(rule.eatNextOnFail), - depth, - expanded: false, - kind: RuleKind.OF_TYPE_CONSTRAINT, - state: - (typeof rule.tokenName === 'string' ? rule.tokenName : undefined) || - (typeof name === 'string' ? name : undefined) || - (typeof state === 'string' ? state : undefined) || - this._getNextRule()?.state || - '', - step: - typeof step === 'number' - ? step - : (this._getNextRule()?.step || 0) + 1, - }); - break; - case RuleKind.LIST_OF_TYPE_CONSTRAINT: - rule = (rule: GraphQLGrammarListOfTypeConstraint); - this.state.rules.push({ - listOfType: rule.listOfType, - optional: Boolean(rule.optional), - butNot: rule.butNot, - eatNextOnFail: Boolean(rule.eatNextOnFail), - name: name || '', - depth, - expanded: false, - kind: RuleKind.LIST_OF_TYPE_CONSTRAINT, - state: - (typeof name === 'string' ? name : undefined) || - (typeof state === 'string' ? state : undefined) || - this._getNextRule()?.state || - '', - step: - typeof step === 'number' - ? step - : (this._getNextRule()?.step || 0) + 1, - }); - break; - case RuleKind.TOKEN_CONSTRAINT: - rule = (rule: GraphQLGrammarTokenConstraint); - this.state.rules.push({ - token: rule.token, - ofValue: rule.ofValue, - oneOf: rule.oneOf, - definitionName: Boolean(rule.definitionName), - typeName: Boolean(rule.typeName), - optional: Boolean(rule.optional), - butNot: rule.butNot, - eatNextOnFail: Boolean(rule.eatNextOnFail), - name: name || '', - depth, - expanded: false, - kind: RuleKind.TOKEN_CONSTRAINT, - state: - (typeof rule.tokenName === 'string' ? rule.tokenName : undefined) || - (typeof state === 'string' ? state : undefined) || - this._getNextRule()?.state || - '', - step: - typeof step === 'number' - ? step - : (this._getNextRule()?.step || 0) + 1, - }); - break; - case RuleKind.PEEK_CONSTRAINT: - rule = (rule: GraphQLGrammarPeekConstraint); - this.state.rules.push({ - peek: rule.peek, - optional: Boolean(rule.optional), - butNot: rule.butNot, - eatNextOnFail: Boolean(rule.eatNextOnFail), - name: name || '', - depth, - index: -1, - matched: false, - expanded: false, - kind: RuleKind.PEEK_CONSTRAINT, - state: - (typeof state === 'string' ? state : undefined) || - this._getNextRule()?.state || - '', - step: - typeof step === 'number' - ? step - : (this._getNextRule()?.step || 0) + 1, - }); - break; - } - } - - _getRuleKind(rule: GraphQLGrammarRule | OnlineParserRule): string { - if (Array.isArray(rule)) { - return RuleKind.CONSTRAINTS_SET; - } - - if (rule.constraintsSet === true) { - return RuleKind.CONSTRAINTS_SET_ROOT; - } - - if (typeof rule === 'string') { - return RuleKind.RULE_NAME; - } - - if (Object.prototype.hasOwnProperty.call(rule, 'ofType')) { - return RuleKind.OF_TYPE_CONSTRAINT; - } - - if (Object.prototype.hasOwnProperty.call(rule, 'listOfType')) { - return RuleKind.LIST_OF_TYPE_CONSTRAINT; - } - - if (Object.prototype.hasOwnProperty.call(rule, 'peek')) { - return RuleKind.PEEK_CONSTRAINT; - } - - if (Object.prototype.hasOwnProperty.call(rule, 'token')) { - return RuleKind.TOKEN_CONSTRAINT; - } - - return RuleKind.INVALID; - } - - _advanceToken(): LexerToken { - return (this._lexer.advance(): any); - } - - _lookAhead(): LexerToken { - try { - return (this._lexer.lookahead(): any); - } catch (err) { - return { kind: TokenKind.INVALID, value: '' }; - } - } -}