Class VariableDeclaration

Hierarchy (view full)

Constructors

constructor

Properties

constant context? documentation? id indexed mutability name nameLocation? parent? raw? scope src stateVariable storageLocation typeString vOverrideSpecifier? vType? vValue? visibility

Accessors

children firstChild lastChild nextSibling previousSibling requiredContext root sourceInfo type vScope

Methods

acceptChildren extractSourceFragment getChildren getChildrenBySelector getChildrenByType getChildrenByTypeString getClosestParentBySelector getClosestParentByType getClosestParentByTypeString getFieldValues getGettersValues getParents getParentsBySelector print walk walkChildren walkParents

Constructors

constructor

Properties

constant

constant: boolean

Set if the variable can not be assigned a new value after declaration

Optional context

context?: ASTContext

Current tree context of the node

Optional documentation

documentation?: string | StructuredDocumentation

Optional documentation appearing above the variable declaration:

  • Is undefined when not specified.
  • Is type of string for compatibility reasons.
  • Is instance of StructuredDocumentation when specified and compiler version is 0.6.9 or newer.

id

id: number

Unique identifier number for the node in the tree context

indexed

indexed: boolean

Set if variable declaration is marked as indexed. Indexed variable declarations may appear in parameter list of event definitions.

mutability

mutability: Mutability

Variable mutability, for example mutable, immutable or constant.

name

name: string

Identifier of the variable

Optional nameLocation

nameLocation?: string

The source range for name string

Optional parent

parent?: ASTNode

The AST node that is containing current node

Optional raw

raw?: any

Raw original Solc AST node that was used to create current node.

scope

scope: number

Id of scoped node

src

src: string

Source mapping data corresponting to the AST node.

The value has format start:length:sourceIndex:

  • start is the starting index of the corresponding code fragment substring in the source string;
  • length is the length of corresponding code fragment substring;
  • sourceIndex is the index number of the source unit (file), that contains the AST node.

To get parsed values, use sourceInfo accessor.

stateVariable

stateVariable: boolean

Set if variable is a state variable. Not set is variable is local.

storageLocation

storageLocation: DataLocation

Data storage location. For example: storage, memory or calldata. If it's not set, then the value is default.

typeString

typeString: string

Type string

Optional vOverrideSpecifier

vOverrideSpecifier?: OverrideSpecifier

Override specifier if provided

Optional vType

vType?: TypeName

Variable type. Can be empty for Solidity 0.4.x declarations with var keyword.

Optional vValue

vValue?: Expression

The expression that is assigned in place as part of the declaration.

In common, it is set for state variables that have initializers in place. Also, it is not set for declarations, that are children of VariableDeclarationStatement, as such statements have own initial value property and may have tuple assignments.

visibility

visibility: StateVariableVisibility

State variable visibility, for example public, internal or private.

Accessors

children

firstChild

  • get firstChild(): undefined | ASTNode

  • Returns the first immediate child of the node, or undefined if the node has no children.

    Returns undefined | ASTNode

lastChild

  • get lastChild(): undefined | ASTNode

  • Returns the last immediate child of the node, or undefined if the node has no children.

    Returns undefined | ASTNode

nextSibling

  • get nextSibling(): undefined | ASTNode

  • Returns the node immediately following the current one in its parent's children.

    Returns undefined if the current node is the last child in its parent's children.

    Returns undefined | ASTNode

previousSibling

  • get previousSibling(): undefined | ASTNode

  • Returns the node immediately preceding the current one in its parent's children.

    Returns undefined if the current node is the first child in its parent's children.

    Returns undefined | ASTNode

requiredContext

root

sourceInfo

type

  • get type(): string

  • Type of the AST node

    Returns string

vScope

Methods

acceptChildren

extractSourceFragment

  • extractSourceFragment(source): Uint8Array

  • Extracts and returns substring from source, that corresponds to src property value of the current node.

    In other words, returns corresponding code fragment substring.

    Parameters

    • source: Uint8Array

    Returns Uint8Array

getChildren

getChildrenBySelector

getChildrenByType

getChildrenByTypeString

getClosestParentBySelector

getClosestParentByType

getClosestParentByTypeString

getFieldValues

getGettersValues

getParents

getParentsBySelector

print

  • print(depth?): string

  • Returns string representation of the node properties.

    Parameters

    • depth: number = 0

      The number of children node levels to output

    Returns string

walk

walkChildren

walkParents

Settings

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On This Page

constructorconstantcontextdocumentationidindexedmutabilitynamenameLocationparentrawscopesrcstateVariablestorageLocationtypeStringvOverrideSpecifiervTypevValuevisibilitychildrenfirstChildlastChildnextSiblingpreviousSiblingrequiredContextrootsourceInfotypevScopeacceptChildrenextractSourceFragmentgetChildrengetChildrenBySelectorgetChildrenByTypegetChildrenByTypeStringgetClosestParentBySelectorgetClosestParentByTypegetClosestParentByTypeStringgetFieldValuesgetGettersValuesgetParentsgetParentsBySelectorprintwalkwalkChildrenwalkParents

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