DartBlockEnvironment class - environment library

Constructors

DartBlockEnvironment(int key, {DartBlockEnvironment? parent, required List<DartBlockEnvironment> children})
DartBlockEnvironment.fromJson(Map<String, dynamic> json): NOTE: The serialized form intentionally omits the upward parent link to avoid infinite recursion (child -> parent -> child ...) during JSON (de)serialization. We call the generated _$DartBlockEnvironmentFromJson to deserialize children (downward links) and then restore parent references in-memory via _rebuildParentReferences().
factory

Properties

children → List<DartBlockEnvironment>: no setter
hashCode → int: The hash code for this object.
no setterinherited
key → int: If indicated, the parent property provides the link to the parent Environment which contains this Environment. This models for example the nesting of code blocks, where for example variables declared in a for-loop should not be accessible after exiting the loop. The highest-up Environment (scope) has its parent property set to null, thus indicating it is the "global" scope.
final
parent → DartBlockEnvironment?: no setter
runtimeType → Type: A representation of the runtime type of the object.
no setterinherited

Methods

addChild(DartBlockEnvironment child) → void
assignValueToVariable(DartBlockArbiter arbiter, String variableName, DartBlockValue? value) → void: Assign a value to an existing variable based on its name.
clearChildren() → void
clearMemory() → void
clone() → DartBlockEnvironment: Create a deep copy of this environment (including children and memory).
copyFrom(DartBlockEnvironment environment) → void
declareVariable(DartBlockArbiter arbiter, String variableName, DartBlockDataType dataType, DartBlockValue? value) → void: Declare a variable using the given name and optionally the initial value.
get(String variableName) → DartBlockValue?: Get the current value associated with the given variable name.
getAllValues(DartBlockArbiter arbiter) → Map<DartBlockVariableDefinition, String?>
getContainingEnvironment(String variableName) → DartBlockEnvironment?: Search for the Environment which stores the value mapped to the given variable name (key). If a given key is not found in the current Environment, it may still be found in a higher up (parent) Environment, hence this function recursively searches for the parent Environment which contains this key.
noSuchMethod(Invocation invocation) → dynamic: Invoked when a nonexistent method or property is accessed.
inherited
setParent(DartBlockEnvironment? parent) → void
toJson() → Map<String, dynamic>: NOTE: parent is excluded from JSON output on purpose to prevent cyclic traversal of the object graph (parent -> child -> parent -> ...), which causes stack overflows. Only downward links (children) are serialized. Parent links are restored after fromJson runs _rebuildParentReferences().
toString() → String: A string representation of this object.
override

Operators

operator ==(Object other) → bool: The equality operator.
inherited