LuaObjectNoSemantics class

Represents a lua object for analyzing irregardless if it is a well-defined variable or value. This permits any visitor to look pass semantic errors and continue marching through the grapheme.

Inheritance

Constructors

LuaObjectNoSemantics(String id)

Properties

asMapEntry → MapEntry<String, LuaObject>
Convenience util to project this lua object into a map entry keyed by its own id.
no setterinherited
doc ↔ LuaDoc?
If this object has html content, it may show up in the autodoc generation.
getter/setter pairinherited
fields → LuaTable?
Returns the stored _fields value
no setterinherited
funcDef ↔ FuncExpr?
If this lua object is a function, it will have FuncExpr node with information about its arguments.
getter/setter pairinherited
hashCode → int
The hash code for this object.
no setterinherited
id → String
The variable name. Note that if this instance is a value in a table, then the table may know it by a different name. See fields.
finalinherited
isFalsey → bool
Query the negation of isTruthy.
no setterinherited
isFunc → bool
Query if this lua object is a table and has a field named '__call'.
no setterinherited
isNil → bool
A lua object is nil if both its value and fields are nil.
no setterinherited
isNotFunc → bool
Query the negation of isFunc.
no setterinherited
isNotTable → bool
Query the negation of isTable.
no setterinherited
isPrintable → bool
Query if std "print" can print the value. This is short for asking if the lua object is a table or a function, which would return the address in the VM at runtime for this lua obejct.
no setterinherited
isRef → bool
Query if the stored value is of type LuaObject.
no setterinherited
isTable → bool
A lua object is a table if its fields are non null.
no setterinherited
isTruthy → bool
In lua, all values have a truthyness which means they can be used in conditional statements. If value is null or false, then the result is false. All other values and the result is true. If this lua object is a table, then the result is true.
no setterinherited
isValue → bool
Query if the stored value is not a reference and the value is not null.
no setterinherited
length → int
Returns the arity of this object. For lua table length, see tableSize;
no setterinherited
luaTypeInfo → String
Returns the lua equivalent runtime type information. The result is the same as what lua type(x) would return. This is useful for quick type checking and printing helpful error messages.
no setterinherited
runtimeType → Type
A representation of the runtime type of the object.
no setterinherited
skipSemanitcs → bool
A reference object to a LuaObjectNoSemantics type should be treated transitively as a LuaObjectNoSemantics type.
no setterinherited
tableSize → int
Begins at field "1" and increments this string until no field is found with that key. Returns the largest integer field found minus one. This mimics lua's table len (#) behavior.
no setterinherited
type → LuaType
Query the LuaType based on if the following properties hold:
no setterinherited
typeinfo → String
Returns the lua runtime type information. Unlike vanilla lua, this runtime comes with additional runtime semantics.
no setterinherited
uses ↔ int
How often this object was read or written during evaluation. Can be used for optimization and reporting unused variables.
getter/setter pairinherited
value ↔ Object?
Bumps uses by one and returns the stored _fields if a table or _value otherwise.
getter/setter pairinherited

Methods

call() → Object?
Attempts to find the metamethod '__call' and if found, executes its closure. Otherwise this throws an error.
inherited
deref() → LuaObject
Unpacks a lua object if it holds a reference to another lua object during runtime. Otherwise if isRef is false, then it returns itself.
inherited
fieldValueAs<T>(String key, {T? or}) → T?
Inspects the result of readField with key. If the result's type is LuaObject, then it also inspects its this.value. If the underlying value type is T, then it is returned. If no underlying value type matches T, then or is returned.
inherited
hasField(String key) → bool
Internal utility method to determine if this unpacked lua object is a table and has a field named key.
inherited
noSuchMethod(Invocation invocation) → dynamic
Invoked when a nonexistent method or property is accessed.
inherited
onRead(dynamic callback(String)?) → void
Whenever a lua object's fields or value is read, executes callback.
inherited
onWrite(dynamic callback(String, Object?)?) → void
Whenever a lua object's fields or value is modified (written), executes callback. If the lua object's storage is value, then the first argument of callback will be 'self'. Otherwise it is the string name of the field's key.
inherited
readField(String key) → Object?
If this lua object is a table, unpacks _fields and returns the value. Otherwise null is returned.
inherited
tableInsert(int index, LuaObject value) → LuaObject?
Convenience method to implement std table methods.
inherited
tableRemove(int index) → LuaObject?
Convenience method to implement std table methods.
inherited
toRef() → LuaObject
Creates and returns a LuaObject.ref instance of itself.
inherited
toString() → String
Due to a dart bug, I cannot throw if we're converting a table or some other unknown data type to a string. Instead, unhandled types return their variable name wrapped in angle brackets <>. I'll check for string type conversion as-needed instead.
inherited
valueAs<T>() → T?
Inspects this.value. If the type is LuaObject, inspects its this.value. If the underlying value type is T, then it is returned. If no underlying value type matches T, the null is returned.
inherited
valueAsInt() → int?
Tries to cast this.value as num and performs a lossy integer division to obtain the leading part of the double. If the leading part is equal to the double representation, the value must be a whole number and therefore an integer. Otherwise, loss happened and it must be a real number and therefore a double. If the underlying type of this.value is not num then null is returned.
inherited
writeField(String key, Object? value) → Object?
If this lua object is a table, then it writes value to key and returns the field key. Otherwise if the lua object is not a table, then null is returned.
inherited
writeFields(LuaTable table) → void
A convenience utility to write all fields from some input table.
inherited

Operators

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