VirtualMachine Struct Reference

Description:

This type implements a very simple stack machine that understands just four commands (!) plus a fifth to execute sub-programs.

This class is part of module ALib Expressions. It is not too well documented as it resides in a detail namespace and is not to be used from the outside expression API.

Definition at line 30 of file virtualmachine.hpp.

#include <virtualmachine.hpp>

Inner Type Index:
class	Command
	A command of the VM. More...

Public Type Index:
using	PC = integer
	Type definition for a program counter.

Public Static Method Index:
static ALIB_API AString	DbgList (Program &program)
static ALIB_API AST *	Decompile (Program &program, MonoAllocator &allocator)
static ALIB_API alib::Box	Run (Program &program, Scope &scope)
static ALIB_API void	run (Program &program, Scope &scope)

Type Definition Details:

PC

using PC = integer

Type definition for a program counter.

Definition at line 33 of file virtualmachine.hpp.

Method Details:

DbgList()

AString DbgList ( Program & program )

static

Lists a virtual machine program.

Note: This method is available only with debug-builds of the library.

Parameters

program

The program to list.

Returns

The program listing.

Definition at line 516 of file virtualmachine.cpp.

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Decompile()

AST * Decompile ( Program & program, MonoAllocator & allocator )

static

Static method that decompiles a program into an abstract syntax tree. Used to generate optimized, normalized, parsable expression strings.

Parameters

program	The program to decompile.
allocator	Allocator for AST objects (and their data).

Returns

The abstract syntax tree as a result of de-compilation.

Definition at line 347 of file virtualmachine.cpp.

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Run()

Box Run ( Program & program, Scope & scope )

static

Static method that runs an expression program.

Parameters

program	The program to run.
scope	The scope to use.

Returns

The result value of the expression program.

Definition at line 43 of file virtualmachine.cpp.

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run()

void run ( Program & program, Scope & scope )

static

The implementation of Run, which itself is just initialization code.

Parameters

program	The program to run.
scope	The scope to use.

Definition at line 64 of file virtualmachine.cpp.

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The documentation for this struct was generated from the following files:

• virtualmachine.hpp
• virtualmachine.cpp