Functions and Includes

function — Function definition

Full reference →

A function in iXML is a closed subroutine — a named, reusable block of code that executes in its own isolated local context.

Syntax

XML

<function var="myFunction">
    <use name="closureVarName" var="outerVar"/>

    <!-- function body -->
    <set var="return">result value</set>
</function>

Context Isolation

The critical characteristic of a function is context isolation. When a function is called, iXML creates a fresh local context. Variables declared inside are invisible outside, and vice versa, unless explicitly bound.

Special Local Variables

Variable	Description
this	Reference to the calling object (if called as a method).
return	The return value. Defaults to NULL.
arguments	Array containing all passed parameters.

call — Call function

Full reference →

Invokes a function. Execution transfers to the function and returns when complete.

Syntax

XML

<call func="functionName" var="resultVar">
    <param name="paramName">value</param>
</call>

Attributes

Name	Type	Description
func	var	Function variable to call.
var	var	Variable to store the return value.
var_params	var	Array variable containing parameters.
var_this	var	Explicitly bind this context.

include — Include code source

Full reference →

Executes code from an external resource file.

Syntax

XML

<include id="resource.id" [var="classVar"] [once="true"]>
    <param name="paramName">value</param>
</include>

Description

include loads and executes the content of a ZeyOS resource. It is the primary way to modularize code into separate files.

• By default, includes execute in a new local context (like a function call).
• Parameter passing works exactly like <call>.
• Use once="true" to prevent re-loading the same library multiple times.