Class default<EntityTypeIDs>Abstract

constructor

• new default<EntityTypeIDs extends number>(
      localID: number,
      internalReference_: default<EntityTypeIDs>,
      model: default<EntityTypeIDs, default<EntityTypeIDs>>,
  ): default<EntityTypeIDs>

• Construct this with the local ID, internal reference and the model.

  Type Parameters

  • EntityTypeIDs extends number

  Parameters

  • localID: number

    The local (dense) ID within the model, that acts as a reference.
  • internalReference_: default<EntityTypeIDs>

    The internal reference to model components etc.
  • model: default<EntityTypeIDs, default<EntityTypeIDs>>

    The model this came from.

  Returns default<EntityTypeIDs>

ReadonlylocalID

Readonlymodel

Dim

• get Dim(): number

• Get the number of dimensions for this, some functions require every object to have this,

  The default value is 0.

  Returns number

  The number of dimensions.

expressID

• get expressID(): undefined | number

• Get the express ID for this, note that if an element is inlined, it will have not have an express ID.

  Returns undefined | number

  The express ID of this or undefined if there isn't one.

fields

• get fields(): EntityFieldsDescription<EntityTypeIDs>

• Get the reflected fields of this.

  Returns EntityFieldsDescription<EntityTypeIDs>

isInline

• get isInline(): boolean

• Is this an inline element or fully specified?

  Returns boolean

  Is this inline?

orderedFields

• get orderedFields(): [string, EntityFieldDescription<EntityTypeIDs>][]

• Get the reflected fields of this.

  Returns [string, EntityFieldDescription<EntityTypeIDs>][]

Abstracttype

• get type(): EntityTypeIDs

• Get the final type of this STEP entity.

  Returns EntityTypeIDs

typeInfo

• get typeInfo(): EntityDescription<EntityTypeIDs>

• Get the reflecterd type info for this element/entity.

  Returns EntityDescription<EntityTypeIDs>

  The entity description for this.

extractArray

• extractArray(offset: number, rank: number): any[]

• Parameters

  • offset: number

    offset in ifc line
  • rank: number

    number array rank

  Returns any[]

  array of values

extractBinary

• extractBinary(vtableOffset: number, optional: true): null | [Uint8Array, number]

• Extract a number at the particular vtable offset (i.e. the position in the matching step object).

  Used by other extraction methods with wrappers to perform semantically correct extraction.

  Parameters

  • vtableOffset: number

    The offset in the vtable to extract from
  • optional: true

    Is this an optional field?

  Returns null | [Uint8Array, number]

  The extracted number.
• extractBinary(vtableOffset: number, optional: false): [Uint8Array, number]

• Extract a number at the particular vtable offset (i.e. the position in the matching step object).

  Used by other extraction methods with wrappers to perform semantically correct extraction.

  Parameters

  • vtableOffset: number

    The offset in the vtable to extract from
  • optional: false

    Is this an optional field?

  Returns [Uint8Array, number]

  The extracted number.

extractBoolean

• extractBoolean(offset: number, optional: true): null | boolean

• Extract a number at the particular vtable offset (i.e. the position in the matching step object).

  Used by other extraction methods with wrappers to perform semantically correct extraction.

  Parameters

  • offset: number

    The offset in the vtable to extract from
  • optional: true

    Is this an optional field? (true)

  Returns null | boolean

  The extracted number or null if it's not supplied.
• extractBoolean(offset: number, optional: false): boolean

• Extract a number at the particular vtable offset (i.e. the position in the matching step object).

  Used by other extraction methods with wrappers to perform semantically correct extraction.

  Parameters

  • offset: number

    The offset in the vtable to extract from
  • optional: false

    Is this an optional field? (false).

  Returns boolean

  The extracted number.

extractElement

• extractElement<
      T extends
          StepEntityConstructorAbstract<EntityTypeIDs, default<EntityTypeIDs>, T>,
  >(
      offset: number,
      optional: true,
      entityConstructor: T,
  ): null | InstanceType<T>

• Extract a string at the particular vtable offset (i.e. the position in the matching step object).

  Used by other extraction methods with wrappers to perform semantically correct extraction.

  Type Parameters

  • T extends StepEntityConstructorAbstract<EntityTypeIDs, default<EntityTypeIDs>, T>

  Parameters

  • offset: number

    The offset in the vtable to extract from
  • optional: true

    Is this an optional field? (true)
  • entityConstructor: T

  Returns null | InstanceType<T>

  The extracted element, or null if optional and this value isn't specified.
• extractElement<
      T extends
          StepEntityConstructorAbstract<EntityTypeIDs, default<EntityTypeIDs>, T>,
  >(
      offset: number,
      optional: false,
      entityConstructor: T,
  ): InstanceType<T>

• Extract a string at the particular vtable offset (i.e. the position in the matching step object).

  Used by other extraction methods with wrappers to perform semantically correct extraction.

  Type Parameters

  • T extends StepEntityConstructorAbstract<EntityTypeIDs, default<EntityTypeIDs>, T>

  Parameters

  • offset: number

    The offset in the vtable to extract from
  • optional: false

    Is this an optional field? (false)
  • entityConstructor: T

  Returns InstanceType<T>

  The extracted element.

extractLambda

• extractLambda<ExtractionType>(
      offset: number,
      extractor: (
          buffer: Uint8Array,
          cursor: number,
          endCursor: number,
      ) => undefined | null | ExtractionType,
      optional: true,
  ): null | ExtractionType

• Extract a number at the particular vtable offset (i.e. the position in the matching step object).

  Used by other extraction methods with wrappers to perform semantically correct extraction.

  Type Parameters

  • ExtractionType

  Parameters

  • offset: number

    The offset in the vtable to extract from
  • extractor: (
        buffer: Uint8Array,
        cursor: number,
        endCursor: number,
    ) => undefined | null | ExtractionType

    The function to be used for extraction.
  • optional: true

    Is this an optional field? (true)

  Returns null | ExtractionType

  The extracted value or null for optionals.
• extractLambda<ExtractionType>(
      offset: number,
      extractor: (
          buffer: Uint8Array,
          cursor: number,
          endCursor: number,
      ) => undefined | ExtractionType,
      optional: false,
  ): ExtractionType

• Extract a number at the particular vtable offset (i.e. the position in the matching step object).

  Used by other extraction methods with wrappers to perform semantically correct extraction.

  Type Parameters

  • ExtractionType

  Parameters

  • offset: number

    The offset in the vtable to extract from
  • extractor: (
        buffer: Uint8Array,
        cursor: number,
        endCursor: number,
    ) => undefined | ExtractionType

    The function to be used for extraction.
  • optional: false

    Is this an optional field? (false)

  Returns ExtractionType

  The extracted value or null for optionals.

extractLineArguments

• extractLineArguments(): Uint8Array

• Returns Uint8Array

  buffer containing line data up to the semicolon

extractLogical

• extractLogical(offset: number, optional: true): null | boolean

• Extract a number at the particular vtable offset (i.e. the position in the matching step object).

  Used by other extraction methods with wrappers to perform semantically correct extraction.

  Parameters

  • offset: number

    The offset in the vtable to extract from
  • optional: true

    Is this an optional field?

  Returns null | boolean

  The extracted logical or null for optionals.
• extractLogical(offset: number, optional: false): boolean

• Extract a number at the particular vtable offset (i.e. the position in the matching step object).

  Used by other extraction methods with wrappers to perform semantically correct extraction.

  Parameters

  • offset: number

    The offset in the vtable to extract from
  • optional: false

    Is this an optional field?

  Returns boolean

  The extracted logical or null for optionals.

extractNumber

• extractNumber(vtableOffset: number, optional: true): null | number

• Extract a number at the particular vtable offset (i.e. the position in the matching step object).

  Used by other extraction methods with wrappers to perform semantically correct extraction.

  Parameters

  • vtableOffset: number

    The offset in the vtable to extract from
  • optional: true

    Whether this is a potentially optional field

  Returns null | number

  The extracted number.
• extractNumber(vtableOffset: number, optional: false): number

• Extract a number at the particular vtable offset (i.e. the position in the matching step object).

  Used by other extraction methods with wrappers to perform semantically correct extraction.

  Parameters

  • vtableOffset: number

    The offset in the vtable to extract from
  • optional: false

    Whether this is a potentially optional field

  Returns number

  The extracted number.

extractParseBuffer

• extractParseBuffer(
      offset: number,
      result: ParseBuffer,
      module: any,
      optional: boolean,
  ): boolean

• Extract a parse buffer at a particular vtable offset.

  Parameters

  • offset: number
  • result: ParseBuffer
  • module: any
  • optional: boolean

  Returns boolean

  True if this extracts, false (usually because this is optional)

extractReference

• extractReference(offset: number, optional: true): null | default<EntityTypeIDs>

• Extract a reference from an offset, without type check.

  Parameters

  • offset: number

    The offset in the vtable to extract from
  • optional: true

    Is this an optional field?

  Returns null | default<EntityTypeIDs>

  Extracted entity or undefined.
• extractReference(offset: number, optional: false): default<EntityTypeIDs>

• Extract a reference from an offset, without type check.

  Parameters

  • offset: number

    The offset in the vtable to extract from
  • optional: false

    Is this an optional field?

  Returns default<EntityTypeIDs>

  Extracted entity or undefined.

extractString

• extractString(offset: number, optional: true): null | string

• Extract a string at the particular vtable offset (i.e. the position in the matching step object).

  Used by other extraction methods with wrappers to perform semantically correct extraction.

  Parameters

  • offset: number

    The offset in the vtable to extract from
  • optional: true

    Is this an optional field?

  Returns null | string

  The extracted string, or null if optional and this value isn't specified.
• extractString(offset: number, optional: false): string

• Extract a string at the particular vtable offset (i.e. the position in the matching step object).

  Used by other extraction methods with wrappers to perform semantically correct extraction.

  Parameters

  • offset: number

    The offset in the vtable to extract from
  • optional: false

    Is this an optional field?

  Returns string

  The extracted string, or null if optional and this value isn't specified.

invalidate

• invalidate(): void

• Make it so this particular object is not held in the cache.

  Returns void

readStringView

• readStringView(
      buffer: Uint8Array,
      cursor: number,
  ): { data: string; length: number }

• Parameters

  • buffer: Uint8Array
  • cursor: number

  Returns { data: string; length: number }

  string and length

readValue

• readValue(buffer: Uint8Array, cursor: number, t: IfcTokenType): any

• Parameters

  • buffer: Uint8Array
  • cursor: number
  • t: IfcTokenType

  Returns any

  ifc token

toString

• toString(): string

• Convert this to a string (which is the equivalent to a reference or '#inline' for inline elements).

  Returns string

  Convert this to a string