FlutterExprtkPlatform class abstract
The interface that implementations of flutter_exprtk must implement.
Platform implementations should extend this class rather than implement it as flutter_exprtk
does not consider newly added methods to be breaking changes. Extending this class
(using extends) ensures that the subclass will get the default implementation, while
platform implementations that implements this interface will be broken by newly added
FlutterExprtkPlatform methods.
- Inheritance
-
- Object
- PlatformInterface
- FlutterExprtkPlatform
- Implementers
Constructors
- FlutterExprtkPlatform()
- Constructs a FlutterExprtkPlatform.
Properties
- hashCode → int
-
The hash code for this object.
no setterinherited
- runtimeType → Type
-
A representation of the runtime type of the object.
no setterinherited
Methods
-
clear(
int pExpression) → void - Clear the expresseion
-
free(
int ptr) → void -
getConst(
int constantName, int pExpression) → double - Get the value of constant constantName
-
getResult(
int pExpression) → double - Get the result of an expresssion
-
getVar(
int variableName, int pExpression) → double - Get the current value of the variable variableName
-
isValid(
int pExpression) → int - Check whether an expression is valid
-
newExpression(
{required String expression, required Map< String, double> variables, Map<String, double> ? constants}) → int - Creates a new Expression instance in the native library Note: This shouldn't be called manually
-
noSuchMethod(
Invocation invocation) → dynamic -
Invoked when a nonexistent method or property is accessed.
inherited
-
setConst(
int constantName, double variableValue, int pExpression) → void - Set the current value of the constant constantName
-
setVar(
int variableName, double variableValue, int pExpression) → void - Set variable variableName to variableValue
-
toNativeUtf8(
String string) → int - Get a pointer to a char* array
-
toString(
) → String -
A string representation of this object.
inherited
Operators
-
operator ==(
Object other) → bool -
The equality operator.
inherited
Static Properties
- instance ↔ FlutterExprtkPlatform
-
The default instance of FlutterExprtkPlatform to use,
defaults to FlutterExprtkPlatformUnsupported.
getter/setter pair