Interpreter

Constructors

this

this()

Constructs a new Interpreter with a global context. Note that all calls to evaluate run in a new context below the global context. This allows keywords such as let and const to not pollute the global namespace. However, scripts can use var to declare variables that are global.

Members

Functions

callFunction

ScriptAny callFunction(ScriptFunction func, ScriptAny thisObj, ScriptAny[] args)

Calls a script function. Can throw ScriptRuntimeException.

evaluate

ScriptAny evaluate(string code)

This is the main entry point for evaluating a script program.

forceSetGlobal

void forceSetGlobal(string name, T value, bool isConst)

Sets a global variable or constant without checking whether or not the variable or const was already declared. This is used by host applications to define custom functions or objects.

forceUnsetGlobal

void forceUnsetGlobal(string name)

Unsets a variable or constant in the global context. Used by host applications to remove items that were loaded by the standard library load functions.

initializeStdlib

void initializeStdlib()

Initializes the Mildew standard library, such as Object, Math, and console namespaces. This is optional and is not called by the constructor. For a script to use these methods this must be called first.

visitArrayIndexNode

Variant visitArrayIndexNode(ArrayIndexNode ainode)

handle array index

visitArrayLiteralNode

Variant visitArrayLiteralNode(ArrayLiteralNode alnode)

return an array from an array literal node

visitBinaryOpNode

Variant visitBinaryOpNode(BinaryOpNode bonode)

processes binary operations including assignment

visitBlockStatementNode

Variant visitBlockStatementNode(BlockStatementNode bsnode)

handles {block} statement

visitBreakStatementNode

Variant visitBreakStatementNode(BreakStatementNode bsnode)

handle break statements

visitClassDeclarationStatementNode

Variant visitClassDeclarationStatementNode(ClassDeclarationStatementNode cdsnode)

handle class declaration

visitClassLiteralNode

Variant visitClassLiteralNode(ClassLiteralNode clnode)

handle class literals

visitContinueStatementNode

Variant visitContinueStatementNode(ContinueStatementNode csnode)

handle continue statements

visitDeleteStatementNode

Variant visitDeleteStatementNode(DeleteStatementNode dsnode)

handle delete statement

visitDoWhileStatementNode

Variant visitDoWhileStatementNode(DoWhileStatementNode dwsnode)

handles do-while statement

visitExpressionStatementNode

Variant visitExpressionStatementNode(ExpressionStatementNode esnode)

handle expression statements

visitForOfStatementNode

Variant visitForOfStatementNode(ForOfStatementNode fosnode)

handles for-of (and for-in) loops

visitForStatementNode

Variant visitForStatementNode(ForStatementNode fsnode)

handles for(;;) statements

visitFunctionCallNode

Variant visitFunctionCallNode(FunctionCallNode fcnode)

handles function calls

visitFunctionDeclarationStatementNode

Variant visitFunctionDeclarationStatementNode(FunctionDeclarationStatementNode fdsnode)

handle function declarations

visitFunctionLiteralNode

Variant visitFunctionLiteralNode(FunctionLiteralNode flnode)

handles function literals

visitIfStatementNode

Variant visitIfStatementNode(IfStatementNode isnode)

handles if statements

visitLiteralNode

Variant visitLiteralNode(LiteralNode lnode)

extract a VisitResult from a LiteralNode

visitMemberAccessNode

Variant visitMemberAccessNode(MemberAccessNode manode)

handle dot operator

visitNewExpressionNode

Variant visitNewExpressionNode(NewExpressionNode nenode)

handles new expression

visitObjectLiteralNode

Variant visitObjectLiteralNode(ObjectLiteralNode olnode)

generates object from object literal node

visitPostfixOpNode

Variant visitPostfixOpNode(PostfixOpNode ponode)

handle constructs such as i++ and i--

visitReturnStatementNode

Variant visitReturnStatementNode(ReturnStatementNode rsnode)

handles return statements

visitSuperCallStatementNode

Variant visitSuperCallStatementNode(SuperCallStatementNode scsnode)

handle super constructor calls TODO use super as reference to base class with correct "this"

visitSwitchStatementNode

Variant visitSwitchStatementNode(SwitchStatementNode ssnode)

handles switch case statements

visitTerniaryOpNode

Variant visitTerniaryOpNode(TerniaryOpNode tonode)

handles : ? operator

visitThrowStatementNode

Variant visitThrowStatementNode(ThrowStatementNode tsnode)

handles throw statements

visitTryCatchBlockStatementNode

Variant visitTryCatchBlockStatementNode(TryCatchBlockStatementNode tcbsnode)

handle try catch block statements

visitUnaryOpNode

Variant visitUnaryOpNode(UnaryOpNode uonode)

returns a value from a unary operation

visitVarAccessNode

Variant visitVarAccessNode(VarAccessNode vanode)

handles variable access

visitVarDeclarationStatementNode

Variant visitVarDeclarationStatementNode(VarDeclarationStatementNode vdsnode)

handles var, let, and const declarations

visitWhileStatementNode

Variant visitWhileStatementNode(WhileStatementNode wsnode)

handles while statements

Structs

VisitResult

struct VisitResult

holds information from visiting nodes TODO redesign this as a union

• Interpreter