Class StreamManager

Classdesc

Manages output streams (stdout / stderr / spy / trace) used by the interpreter.

Author

Keisuke Ikeda

This

Hierarchy

Object
- StreamManager

Constructors

constructor

new StreamManager(): StreamManager
Constructor.

Returns StreamManager
Overrides Object.constructor
- Defined in src/runtime/StreamManager/index.ts:39

Properties

captureStack

captureStack: string[]

Stack of capture buffers. While non-empty, program output (princ, print, terpri, format) is appended to the top buffer instead of being written to stdout; used by with-output-to-string.

constructor

constructor: Function

The initial value of Object.prototype.constructor is the standard built-in Object constructor.

isTrace

isTrace: boolean = false

Whether tracing is currently enabled.

spyTable

spyTable: Map<InterpretedSymbol, string>

Map from a spied symbol to the stream key used for that symbol's output.

streamTable

streamTable: Map<string, Stream>

Map from a named stream key (e.g. "default", "stdout", "stderr") to a WritableStream.

traceStream

traceStream: Stream

The stream that receives trace output while tracing is on.

Methods

getStream

getStream(): Stream
Returns the currently selected output stream (trace stream when tracing, otherwise the default).

Returns Stream
the active stream, or null when none is available
- Defined in src/runtime/StreamManager/index.ts:85

hasOwnProperty

hasOwnProperty(v: PropertyKey): boolean
Determines whether an object has a property with the specified name.
Parameters
- v: PropertyKey
  A property name.
Returns boolean
Inherited from Object.hasOwnProperty
- Defined in node_modules/.pnpm/typescript@6.0.3/node_modules/typescript/lib/lib.es5.d.ts:138

initialize

initialize(): null
Initializes the instance variables.

Returns null
null
- Defined in src/runtime/StreamManager/index.ts:103

isPrototypeOf

isPrototypeOf(v: Object): boolean
Determines whether an object exists in another object's prototype chain.
Parameters
- v: Object
  Another object whose prototype chain is to be checked.
Returns boolean
Inherited from Object.isPrototypeOf
- Defined in node_modules/.pnpm/typescript@6.0.3/node_modules/typescript/lib/lib.es5.d.ts:144

isSpy

isSpy(aSymbol: InterpretedSymbol | null): boolean
Returns whether the given symbol is being spied (or whether tracing is on, in which case every symbol is "spied").
Parameters
- aSymbol: InterpretedSymbol | null
  the symbol to check, or null
Returns boolean
true if the symbol is spied or tracing is on
- Defined in src/runtime/StreamManager/index.ts:116

noSpy

noSpy(aSymbol: InterpretedSymbol): null
Removes the given symbol from the spy table.
Parameters
- aSymbol: InterpretedSymbol
  the symbol to stop spying
Returns null
null
- Defined in src/runtime/StreamManager/index.ts:128

noTrace

noTrace(): null
Turns tracing off and clears the spy table.

Returns null
null
- Defined in src/runtime/StreamManager/index.ts:140

popCapture

popCapture(): string
Pops the top capture buffer and returns its accumulated output.

Returns string
the captured output, or an empty string when nothing was captured
- Defined in src/runtime/StreamManager/index.ts:62

propertyIsEnumerable

propertyIsEnumerable(v: PropertyKey): boolean
Determines whether a specified property is enumerable.
Parameters
- v: PropertyKey
  A property name.
Returns boolean
Inherited from Object.propertyIsEnumerable
- Defined in node_modules/.pnpm/typescript@6.0.3/node_modules/typescript/lib/lib.es5.d.ts:150

pushCapture

pushCapture(): null
Pushes a fresh capture buffer onto the capture stack. Subsequent writeOutput calls are captured until the matching popCapture.

Returns null
null
- Defined in src/runtime/StreamManager/index.ts:53

setIsTrace

setIsTrace(aBoolean: boolean): null
Sets the tracing flag.
Parameters
- aBoolean: boolean
  the new value for the tracing flag
Returns null
null
- Defined in src/runtime/StreamManager/index.ts:152

setTraceStream

setTraceStream(aStream: Stream): null
Sets the trace output stream.
Parameters
- aStream: Stream
  the stream to send trace output to
Returns null
null
- Defined in src/runtime/StreamManager/index.ts:162

spy

spy(aSymbol: InterpretedSymbol, aString: string): null
Registers the given symbol as spied with the given stream key.
Parameters
- aSymbol: InterpretedSymbol
  the symbol to spy on
- aString: string
  the stream key (e.g. "default")
Returns null
null
- Defined in src/runtime/StreamManager/index.ts:173

spyStream

spyStream(aSymbol: InterpretedSymbol | null): string | Stream
Returns the stream (or stream-key string) used for the given symbol's spy output.
Parameters
- aSymbol: InterpretedSymbol | null
  the symbol whose spy stream is requested, or null
Returns string | Stream
the trace stream, the registered key string, or throws if none is found
- Defined in src/runtime/StreamManager/index.ts:187

spyTable_

spyTable_(): Map<InterpretedSymbol, string>
Returns a copy of the spy table (defensive copy so callers do not mutate the internal map).

Returns Map<InterpretedSymbol, string>
a new map containing the same entries as the internal spy table
- Defined in src/runtime/StreamManager/index.ts:201

toLocaleString

toLocaleString(): string
Returns a date converted to a string using the current locale.

Returns string
Inherited from Object.toLocaleString
- Defined in node_modules/.pnpm/typescript@6.0.3/node_modules/typescript/lib/lib.es5.d.ts:129

toString

toString(): string
Returns a string representation of an object.

Returns string
Inherited from Object.toString
- Defined in node_modules/.pnpm/typescript@6.0.3/node_modules/typescript/lib/lib.es5.d.ts:126

trace

trace(): null
Turns tracing on, routing trace output to the currently active stream.

Returns null
null
- Defined in src/runtime/StreamManager/index.ts:210

valueOf

valueOf(): Object
Returns the primitive value of the specified object.

Returns Object
Inherited from Object.valueOf
- Defined in node_modules/.pnpm/typescript@6.0.3/node_modules/typescript/lib/lib.es5.d.ts:132

writeOutput

writeOutput(text: string): null
Writes program output to the top capture buffer when capturing, otherwise to stdout.
Parameters
- text: string
  the text to write
Returns null
null
- Defined in src/runtime/StreamManager/index.ts:72

`Static`assign

assign<T extends {}, U>(target: T, source: U): T & U
Copy the values of all of the enumerable own properties from one or more source objects to a target object. Returns the target object.
Type Parameters
- T extends {}
- U
Parameters
- target: T
  The target object to copy to.
- source: U
  The source object from which to copy properties.
Returns T & U
Inherited from Object.assign
- Defined in node_modules/.pnpm/typescript@6.0.3/node_modules/typescript/lib/lib.es2015.core.d.ts:284
assign<T extends {}, U, V>(target: T, source1: U, source2: V): T & U & V
Copy the values of all of the enumerable own properties from one or more source objects to a target object. Returns the target object.
Type Parameters
- T extends {}
- U
- V
Parameters
- target: T
  The target object to copy to.
- source1: U
  The first source object from which to copy properties.
- source2: V
  The second source object from which to copy properties.
Returns T & U & V
Inherited from Object.assign
- Defined in node_modules/.pnpm/typescript@6.0.3/node_modules/typescript/lib/lib.es2015.core.d.ts:293
assign<T extends {}, U, V, W>(
    target: T,
    source1: U,
    source2: V,
    source3: W,
): T & U & V & W
Copy the values of all of the enumerable own properties from one or more source objects to a target object. Returns the target object.
Type Parameters
- T extends {}
- U
- V
- W
Parameters
- target: T
  The target object to copy to.
- source1: U
  The first source object from which to copy properties.
- source2: V
  The second source object from which to copy properties.
- source3: W
  The third source object from which to copy properties.
Returns T & U & V & W
Inherited from Object.assign
- Defined in node_modules/.pnpm/typescript@6.0.3/node_modules/typescript/lib/lib.es2015.core.d.ts:303
assign(target: object, ...sources: any[]): any
Copy the values of all of the enumerable own properties from one or more source objects to a target object. Returns the target object.
Parameters
- target: object
  The target object to copy to.
- ...sources: any[]
  One or more source objects from which to copy properties
Returns any
Inherited from Object.assign
- Defined in node_modules/.pnpm/typescript@6.0.3/node_modules/typescript/lib/lib.es2015.core.d.ts:311

`Static`create

create(o: object | null): any
Creates an object that has the specified prototype or that has null prototype.
Parameters
- o: object | null
  Object to use as a prototype. May be null.
Returns any
Inherited from Object.create
- Defined in node_modules/.pnpm/typescript@6.0.3/node_modules/typescript/lib/lib.es5.d.ts:186
create(o: object | null, properties: PropertyDescriptorMap & ThisType<any>): any
Creates an object that has the specified prototype, and that optionally contains specified properties.
Parameters
- o: object | null
  Object to use as a prototype. May be null
- properties: PropertyDescriptorMap & ThisType<any>
  JavaScript object that contains one or more property descriptors.
Returns any
Inherited from Object.create
- Defined in node_modules/.pnpm/typescript@6.0.3/node_modules/typescript/lib/lib.es5.d.ts:193

`Static`defineProperties

defineProperties<T>(o: T, properties: PropertyDescriptorMap & ThisType<any>): T
Adds one or more properties to an object, and/or modifies attributes of existing properties.
Type Parameters
- T
Parameters
- o: T
  Object on which to add or modify the properties. This can be a native JavaScript object or a DOM object.
- properties: PropertyDescriptorMap & ThisType<any>
  JavaScript object that contains one or more descriptor objects. Each descriptor object describes a data property or an accessor property.
Returns T
Inherited from Object.defineProperties
- Defined in node_modules/.pnpm/typescript@6.0.3/node_modules/typescript/lib/lib.es5.d.ts:208

`Static`defineProperty

defineProperty<T>(
    o: T,
    p: PropertyKey,
    attributes: PropertyDescriptor & ThisType<any>,
): T
Adds a property to an object, or modifies attributes of an existing property.
Type Parameters
- T
Parameters
- o: T
  Object on which to add or modify the property. This can be a native JavaScript object (that is, a user-defined object or a built in object) or a DOM object.
- p: PropertyKey
  The property name.
- attributes: PropertyDescriptor & ThisType<any>
  Descriptor for the property. It can be for a data property or an accessor property.
Returns T
Inherited from Object.defineProperty
- Defined in node_modules/.pnpm/typescript@6.0.3/node_modules/typescript/lib/lib.es5.d.ts:201

`Static`entries

entries<T>(o: { [s: string]: T } | ArrayLike<T>): [string, T][]
Returns an array of key/values of the enumerable own properties of an object
Type Parameters
- T
Parameters
- o: { [s: string]: T } | ArrayLike<T>
  Object that contains the properties and methods. This can be an object that you created or an existing Document Object Model (DOM) object.
Returns [string, T][]
Inherited from Object.entries
- Defined in node_modules/.pnpm/typescript@6.0.3/node_modules/typescript/lib/lib.es2017.object.d.ts:34
entries(o: {}): [string, any][]
Returns an array of key/values of the enumerable own properties of an object
Parameters
- o: {}
  Object that contains the properties and methods. This can be an object that you created or an existing Document Object Model (DOM) object.
Returns [string, any][]
Inherited from Object.entries
- Defined in node_modules/.pnpm/typescript@6.0.3/node_modules/typescript/lib/lib.es2017.object.d.ts:40

`Static`freeze

freeze<T extends Function>(f: T): T
Prevents the modification of existing property attributes and values, and prevents the addition of new properties.
Type Parameters
- T extends Function
Parameters
- f: T
  Object on which to lock the attributes.
Returns T
Inherited from Object.freeze
- Defined in node_modules/.pnpm/typescript@6.0.3/node_modules/typescript/lib/lib.es5.d.ts:220
freeze<
    T extends { [idx: string]: object
    | U
    | null
    | undefined },
    U extends string | number | bigint | boolean | symbol,
>(
    o: T,
): Readonly<T>
Prevents the modification of existing property attributes and values, and prevents the addition of new properties.
Type Parameters
- T extends { [idx: string]: object | U | null | undefined }
- U extends string | number | bigint | boolean | symbol
Parameters
- o: T
  Object on which to lock the attributes.
Returns Readonly<T>
Inherited from Object.freeze
- Defined in node_modules/.pnpm/typescript@6.0.3/node_modules/typescript/lib/lib.es5.d.ts:226
freeze<T>(o: T): Readonly<T>
Prevents the modification of existing property attributes and values, and prevents the addition of new properties.
Type Parameters
- T
Parameters
- o: T
  Object on which to lock the attributes.
Returns Readonly<T>
Inherited from Object.freeze
- Defined in node_modules/.pnpm/typescript@6.0.3/node_modules/typescript/lib/lib.es5.d.ts:232

`Static`fromEntries

fromEntries<T = any>(
entries: Iterable<readonly [PropertyKey, T]>,
): { [k: string]: T }
Returns an object created by key-value entries for properties and methods
Type Parameters
- T = any
Parameters
- entries: Iterable<readonly [PropertyKey, T]>
  An iterable object that contains key-value entries for properties and methods.
Returns { [k: string]: T }
Inherited from Object.fromEntries
- Defined in node_modules/.pnpm/typescript@6.0.3/node_modules/typescript/lib/lib.es2019.object.d.ts:24
fromEntries(entries: Iterable<readonly any[]>): any
Returns an object created by key-value entries for properties and methods
Parameters
- entries: Iterable<readonly any[]>
  An iterable object that contains key-value entries for properties and methods.
Returns any
Inherited from Object.fromEntries
- Defined in node_modules/.pnpm/typescript@6.0.3/node_modules/typescript/lib/lib.es2019.object.d.ts:30

`Static`getOwnPropertyDescriptor

getOwnPropertyDescriptor(o: any, p: PropertyKey): PropertyDescriptor | undefined
Gets the own property descriptor of the specified object. An own property descriptor is one that is defined directly on the object and is not inherited from the object's prototype.
Parameters
- o: any
  Object that contains the property.
- p: PropertyKey
  Name of the property.
Returns PropertyDescriptor | undefined
Inherited from Object.getOwnPropertyDescriptor
- Defined in node_modules/.pnpm/typescript@6.0.3/node_modules/typescript/lib/lib.es5.d.ts:173

`Static`getOwnPropertyDescriptors

getOwnPropertyDescriptors<T>(
o: T,
): { [P in string | number | symbol]: TypedPropertyDescriptor<T[P]> } & {
[x: string]: PropertyDescriptor;
}
Returns an object containing all own property descriptors of an object
Type Parameters
- T
Parameters
- o: T
  Object that contains the properties and methods. This can be an object that you created or an existing Document Object Model (DOM) object.
Returns { [P in string | number | symbol]: TypedPropertyDescriptor<T[P]> } & {
[x: string]: PropertyDescriptor;
}
Inherited from Object.getOwnPropertyDescriptors
- Defined in node_modules/.pnpm/typescript@6.0.3/node_modules/typescript/lib/lib.es2017.object.d.ts:46

`Static`getOwnPropertyNames

getOwnPropertyNames(o: any): string[]
Returns the names of the own properties of an object. The own properties of an object are those that are defined directly on that object, and are not inherited from the object's prototype. The properties of an object include both fields (objects) and functions.
Parameters
- o: any
  Object that contains the own properties.
Returns string[]
Inherited from Object.getOwnPropertyNames
- Defined in node_modules/.pnpm/typescript@6.0.3/node_modules/typescript/lib/lib.es5.d.ts:180

`Static`getOwnPropertySymbols

getOwnPropertySymbols(o: any): symbol[]
Returns an array of all symbol properties found directly on object o.
Parameters
- o: any
  Object to retrieve the symbols from.
Returns symbol[]
Inherited from Object.getOwnPropertySymbols
- Defined in node_modules/.pnpm/typescript@6.0.3/node_modules/typescript/lib/lib.es2015.core.d.ts:317

`Static`getPrototypeOf

getPrototypeOf(o: any): any
Returns the prototype of an object.
Parameters
- o: any
  The object that references the prototype.
Returns any
Inherited from Object.getPrototypeOf
- Defined in node_modules/.pnpm/typescript@6.0.3/node_modules/typescript/lib/lib.es5.d.ts:165

`Static`hasOwn

hasOwn(o: object, v: PropertyKey): boolean
Determines whether an object has a property with the specified name.
Parameters
- o: object
  An object.
- v: PropertyKey
  A property name.
Returns boolean
Inherited from Object.hasOwn
- Defined in node_modules/.pnpm/typescript@6.0.3/node_modules/typescript/lib/lib.es2022.object.d.ts:23

`Static`is

is(value1: any, value2: any): boolean
Returns true if the values are the same value, false otherwise.
Parameters
- value1: any
  The first value.
- value2: any
  The second value.
Returns boolean
Inherited from Object.is
- Defined in node_modules/.pnpm/typescript@6.0.3/node_modules/typescript/lib/lib.es2015.core.d.ts:330

`Static`isExtensible

isExtensible(o: any): boolean
Returns a value that indicates whether new properties can be added to an object.
Parameters
- o: any
  Object to test.
Returns boolean
Inherited from Object.isExtensible
- Defined in node_modules/.pnpm/typescript@6.0.3/node_modules/typescript/lib/lib.es5.d.ts:256

`Static`isFrozen

isFrozen(o: any): boolean
Returns true if existing property attributes and values cannot be modified in an object, and new properties cannot be added to the object.
Parameters
- o: any
  Object to test.
Returns boolean
Inherited from Object.isFrozen
- Defined in node_modules/.pnpm/typescript@6.0.3/node_modules/typescript/lib/lib.es5.d.ts:250

`Static`isSealed

isSealed(o: any): boolean
Returns true if existing property attributes cannot be modified in an object and new properties cannot be added to the object.
Parameters
- o: any
  Object to test.
Returns boolean
Inherited from Object.isSealed
- Defined in node_modules/.pnpm/typescript@6.0.3/node_modules/typescript/lib/lib.es5.d.ts:244

`Static`keys

keys(o: object): string[]
Returns the names of the enumerable string properties and methods of an object.
Parameters
- o: object
  Object that contains the properties and methods. This can be an object that you created or an existing Document Object Model (DOM) object.
Returns string[]
Inherited from Object.keys
- Defined in node_modules/.pnpm/typescript@6.0.3/node_modules/typescript/lib/lib.es5.d.ts:262
keys(o: {}): string[]
Returns the names of the enumerable string properties and methods of an object.
Parameters
- o: {}
  Object that contains the properties and methods. This can be an object that you created or an existing Document Object Model (DOM) object.
Returns string[]
Inherited from Object.keys
- Defined in node_modules/.pnpm/typescript@6.0.3/node_modules/typescript/lib/lib.es2015.core.d.ts:323

`Static`preventExtensions

preventExtensions<T>(o: T): T
Prevents the addition of new properties to an object.
Type Parameters
- T
Parameters
- o: T
  Object to make non-extensible.
Returns T
Inherited from Object.preventExtensions
- Defined in node_modules/.pnpm/typescript@6.0.3/node_modules/typescript/lib/lib.es5.d.ts:238

`Static`seal

seal<T>(o: T): T
Prevents the modification of attributes of existing properties, and prevents the addition of new properties.
Type Parameters
- T
Parameters
- o: T
  Object on which to lock the attributes.
Returns T
Inherited from Object.seal
- Defined in node_modules/.pnpm/typescript@6.0.3/node_modules/typescript/lib/lib.es5.d.ts:214

`Static`setPrototypeOf

setPrototypeOf(o: any, proto: object | null): any
Sets the prototype of a specified object o to object proto or null. Returns the object o.
Parameters
- o: any
  The object to change its prototype.
- proto: object | null
  The value of the new prototype or null.
Returns any
Inherited from Object.setPrototypeOf
- Defined in node_modules/.pnpm/typescript@6.0.3/node_modules/typescript/lib/lib.es2015.core.d.ts:337

`Static`values

values<T>(o: { [s: string]: T } | ArrayLike<T>): T[]
Returns an array of values of the enumerable own properties of an object
Type Parameters
- T
Parameters
- o: { [s: string]: T } | ArrayLike<T>
  Object that contains the properties and methods. This can be an object that you created or an existing Document Object Model (DOM) object.
Returns T[]
Inherited from Object.values
- Defined in node_modules/.pnpm/typescript@6.0.3/node_modules/typescript/lib/lib.es2017.object.d.ts:22
values(o: {}): any[]
Returns an array of values of the enumerable own properties of an object
Parameters
- o: {}
  Object that contains the properties and methods. This can be an object that you created or an existing Document Object Model (DOM) object.
Returns any[]
Inherited from Object.values
- Defined in node_modules/.pnpm/typescript@6.0.3/node_modules/typescript/lib/lib.es2017.object.d.ts:28

Class StreamManager

Classdesc

Author

This

Hierarchy

Index

Constructors

Properties

Methods

Constructors

constructor

Returns StreamManager

Properties

captureStack

constructor

isTrace

spyTable

streamTable

traceStream

Methods

getStream

Returns Stream

hasOwnProperty

Parameters

Returns boolean

initialize

Returns null

isPrototypeOf

Parameters

Returns boolean

isSpy

Parameters

Returns boolean

noSpy

Parameters

Returns null

noTrace

Returns null

popCapture

Returns string

propertyIsEnumerable

Parameters

Returns boolean

pushCapture

Returns null

setIsTrace

Parameters

Returns null

setTraceStream

Parameters

Returns null

spy

Parameters

Returns null

spyStream

Parameters

Returns string | Stream

spyTable_

Returns Map<InterpretedSymbol, string>

toLocaleString

Returns string

toString

Returns string

trace

Returns null

valueOf

Returns Object

writeOutput

Parameters

Returns null

Staticassign

Type Parameters

Parameters

Returns T & U

Type Parameters

Parameters

Returns T & U & V

Type Parameters

Parameters

Returns T & U & V & W

`Static`assign

`Static`create

`Static`defineProperties

`Static`defineProperty

`Static`entries

`Static`freeze

`Static`fromEntries

`Static`getOwnPropertyDescriptor

`Static`getOwnPropertyDescriptors

Returns { [P in string | number | symbol]: TypedPropertyDescriptor<T[P]> } & {
[x: string]: PropertyDescriptor;
}

`Static`getOwnPropertyNames

`Static`getOwnPropertySymbols

`Static`getPrototypeOf

`Static`hasOwn

`Static`is

`Static`isExtensible

`Static`isFrozen

`Static`isSealed

`Static`keys