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📄 GLSLNodeFunction.js

📊 Analysis Summary

Metric	Count
🔧 Functions	2
🧱 Classes	1
📦 Imports	2
📊 Variables & Constants	20

📚 Table of Contents

• Imports
• Variables & Constants
• Functions
• Classes

🛠️ File Location:

📂 src/nodes/parsers/GLSLNodeFunction.js

📦 Imports

Name	Source
NodeFunction	../core/NodeFunction.js
NodeFunctionInput	../core/NodeFunctionInput.js

---

Variables & Constants

Name	Type	Kind	Value	Exported
declarationRegexp	RegExp	let/var	/^\s*(highp\|mediump\|lowp)?\s*([a-z_0-9]+)\s*([a-z_0-9]+)?\s*\(([\s\S]*?)\)/i	✗
propertiesRegexp	RegExp	let/var	/[a-z_0-9]+/ig	✗
pragmaMain	"#pragma main"	let/var	'#pragma main'	✗
mainCode	any	let/var	pragmaMainIndex !== - 1 ? source.slice( pragmaMainIndex + pragmaMain.length )...	✗
inputsCode	any	let/var	declaration[ 4 ]	✗
propsMatches	any[]	let/var	[]	✗
nameMatch	any	let/var	null	✗
inputs	any[]	let/var	[]	✗
i	number	let/var	0	✗
isConst	boolean	let/var	propsMatches[ i ][ 0 ] === 'const'	✗
qualifier	string	let/var	propsMatches[ i ][ 0 ]	✗
type	string	let/var	propsMatches[ i ++ ][ 0 ]	✗
name	string	let/var	propsMatches[ i ++ ][ 0 ]	✗
name	any	let/var	declaration[ 3 ] !== undefined ? declaration[ 3 ] : ''	✗
type	any	let/var	declaration[ 2 ]	✗
precision	any	let/var	declaration[ 1 ] !== undefined ? declaration[ 1 ] : ''	✗
headerCode	any	let/var	pragmaMainIndex !== - 1 ? source.slice( 0, pragmaMainIndex ) : ''	✗
code	any	let/var	*not shown*	✗
blockCode	any	let/var	this.blockCode	✗
declarationCode	string	let/var	${ type } ${ name } ( ${ inputsCode.trim() } )	✗

---

Functions

parse(source: any): { type: any; inputs: NodeFunctionInput[]; name: any; precision: any; inputsCode: any; blockCode: any; headerCode: any; }

Parameters:

• source any

Returns: { type: any; inputs: NodeFunctionInput[]; name: any; precision: any; inputsCode: any; blockCode: any; headerCode: any; }

Calls:

• source.trim
• source.indexOf
• source.slice
• mainCode.match
• propertiesRegexp.exec
• propsMatches.push
• Number.parseInt
• Number.isNaN
• inputs.push
• mainCode.substring

Internal Comments:

// tokenizer (x2)
// parser (x2)
// (x2)

Code

( source ) => {

    source = source.trim();

    const pragmaMainIndex = source.indexOf( pragmaMain );

    const mainCode = pragmaMainIndex !== - 1 ? source.slice( pragmaMainIndex + pragmaMain.length ) : source;

    const declaration = mainCode.match( declarationRegexp );

    if ( declaration !== null && declaration.length === 5 ) {

        // tokenizer

        const inputsCode = declaration[ 4 ];
        const propsMatches = [];

        let nameMatch = null;

        while ( ( nameMatch = propertiesRegexp.exec( inputsCode ) ) !== null ) {

            propsMatches.push( nameMatch );

        }

        // parser

        const inputs = [];

        let i = 0;

        while ( i < propsMatches.length ) {

            const isConst = propsMatches[ i ][ 0 ] === 'const';

            if ( isConst === true ) {

                i ++;

            }

            let qualifier = propsMatches[ i ][ 0 ];

            if ( qualifier === 'in' || qualifier === 'out' || qualifier === 'inout' ) {

                i ++;

            } else {

                qualifier = '';

            }

            const type = propsMatches[ i ++ ][ 0 ];

            let count = Number.parseInt( propsMatches[ i ][ 0 ] );

            if ( Number.isNaN( count ) === false ) i ++;
            else count = null;

            const name = propsMatches[ i ++ ][ 0 ];

            inputs.push( new NodeFunctionInput( type, name, count, qualifier, isConst ) );

        }

        //

        const blockCode = mainCode.substring( declaration[ 0 ].length );

        const name = declaration[ 3 ] !== undefined ? declaration[ 3 ] : '';
        const type = declaration[ 2 ];

        const precision = declaration[ 1 ] !== undefined ? declaration[ 1 ] : '';

        const headerCode = pragmaMainIndex !== - 1 ? source.slice( 0, pragmaMainIndex ) : '';

        return {
            type,
            inputs,
            name,
            precision,
            inputsCode,
            blockCode,
            headerCode
        };

    } else {

        throw new Error( 'FunctionNode: Function is not a GLSL code.' );

    }

}

GLSLNodeFunction.getCode(name: string): string

JSDoc:

/**
     * This method returns the GLSL code of the node function.
     *
     * @param {string} [name=this.name] - The function's name.
     * @return {string} The shader code.
     */

Parameters:

• name string

Returns: string

Calls:

• inputsCode.trim

Internal Comments:

// interface function (x3)

Code

getCode( name = this.name ) {

        let code;

        const blockCode = this.blockCode;

        if ( blockCode !== '' ) {

            const { type, inputsCode, headerCode, precision } = this;

            let declarationCode = `${ type } ${ name } ( ${ inputsCode.trim() } )`;

            if ( precision !== '' ) {

                declarationCode = `${ precision } ${ declarationCode }`;

            }

            code = headerCode + declarationCode + blockCode;

        } else {

            // interface function

            code = '';

        }

        return code;

    }

---

Classes

GLSLNodeFunction

Class Code

class GLSLNodeFunction extends NodeFunction {

    /**
     * Constructs a new GLSL node function.
     *
     * @param {string} source - The GLSL source.
     */
    constructor( source ) {

        const { type, inputs, name, precision, inputsCode, blockCode, headerCode } = parse( source );

        super( type, inputs, name, precision );

        this.inputsCode = inputsCode;
        this.blockCode = blockCode;
        this.headerCode = headerCode;

    }

    /**
     * This method returns the GLSL code of the node function.
     *
     * @param {string} [name=this.name] - The function's name.
     * @return {string} The shader code.
     */
    getCode( name = this.name ) {

        let code;

        const blockCode = this.blockCode;

        if ( blockCode !== '' ) {

            const { type, inputsCode, headerCode, precision } = this;

            let declarationCode = `${ type } ${ name } ( ${ inputsCode.trim() } )`;

            if ( precision !== '' ) {

                declarationCode = `${ precision } ${ declarationCode }`;

            }

            code = headerCode + declarationCode + blockCode;

        } else {

            // interface function

            code = '';

        }

        return code;

    }

}

Methods

getCode(name: string): string

Code

getCode( name = this.name ) {

        let code;

        const blockCode = this.blockCode;

        if ( blockCode !== '' ) {

            const { type, inputsCode, headerCode, precision } = this;

            let declarationCode = `${ type } ${ name } ( ${ inputsCode.trim() } )`;

            if ( precision !== '' ) {

                declarationCode = `${ precision } ${ declarationCode }`;

            }

            code = headerCode + declarationCode + blockCode;

        } else {

            // interface function

            code = '';

        }

        return code;

    }

---