Module vval

Expand description

This module provides the core data structures used by the parser, compiler and evaluator of WLambda.

Structs§

CompileError
DropFun: Handles calling of destructor functions.
Env: The runtime environment of the evaluator.
FileRef
LoopInfo
Stdio
SynPos: Structure for holding information about origin of an AST node.
SynPosInfo
VValFun: This structure is the runtime representation of a WLambda function value.

CollectionAdd: This type gives the end where to add the VVal::add function.
FunType
StackAction: Encodes all kinds of jumps up the call stack, like break and next in Loops.
Syntax: Encodes the different types of AST nodes.
UnwindAction: Describes an action that needs to be done when returning from a function or somehow jumps unpredictably around the VM prog.
VVal: VVal aka. VariantValue is a data structure to represent all kinds of WLambda data structures.
VValChr: The internal distinction between a character and a byte. They share parts of the lexical represenation and also the semantic purspose is similar.
VarPos: Position of a variable represented in the CompileEnv.

VValUserData: You can implement your own VVal data type and provide it via global functions: