OpenShot Library | OpenShotAudio
0.2.2
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When evaluating an Expression object, this class is used to resolve symbols and perform functions that the expression uses. More...
#include <juce_Expression.h>
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class | Visitor |
Used as a callback by the Scope::visitRelativeScope() method. More... | |
Public Member Functions | |
virtual String | getScopeUID () const |
Returns some kind of globally unique ID that identifies this scope. More... | |
virtual Expression | getSymbolValue (const String &symbol) const |
Returns the value of a symbol. More... | |
virtual double | evaluateFunction (const String &functionName, const double *parameters, int numParameters) const |
Executes a named function. More... | |
virtual void | visitRelativeScope (const String &scopeName, Visitor &visitor) const |
Creates a Scope object for a named scope, and then calls a visitor to do some kind of processing with this new scope. More... | |
When evaluating an Expression object, this class is used to resolve symbols and perform functions that the expression uses.
Definition at line 112 of file juce_Expression.h.
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Returns some kind of globally unique ID that identifies this scope.
Definition at line 1166 of file juce_Expression.cpp.
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Returns the value of a symbol.
If the symbol is unknown, this can throw an Expression::EvaluationError exception. The member value is set to the part of the symbol that followed the dot, if there is one, e.g. for "foo.bar", symbol = "foo" and member = "bar".
Expression::EvaluationError |
Definition at line 1119 of file juce_Expression.cpp.
References juce::Expression::Expression(), and juce::String::isNotEmpty().
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Executes a named function.
If the function name is unknown, this can throw an Expression::EvaluationError exception.
Expression::EvaluationError |
Definition at line 1127 of file juce_Expression.cpp.
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Creates a Scope object for a named scope, and then calls a visitor to do some kind of processing with this new scope.
If the name is valid, this method must create a suitable (temporary) Scope object to represent it, and must call the Visitor::visit() method with this new scope.
Definition at line 1161 of file juce_Expression.cpp.