/*
Language: Leaf build definition files
Description: Leaf Build is an open-source system for build automation.
Author: Dinu Blanovschi <dinu.blanovschi@criptext.com>
Website: https://gitlab.com/leafbuild/leafbuild
*/

/** @type LanguageFn */
export default function (hljs) {
    let BACKSLASH_ESCAPE = {
        begin: '\\\\[\\s\\S]', relevance: 0
    };
    let APOS_STRING_MODE = {
        className: 'string',
        begin: '\'',
        end: '\'',
        illegal: '\\n',
        contains: [BACKSLASH_ESCAPE]
    };
    let STRINGS = {
        className: 'string',
        variants: [
            {
                begin: '\'\'\'.*', end: '\'\'\''
            },
            APOS_STRING_MODE
        ]
    };
    let NUMBERS = {
        className: 'number',
        variants: [
            {begin: '[1-9][0-9]*'},
            {begin: '0x[0-9a-fA-F]+'},
            {begin: '0[0-7]*'}
        ],
        relevance: 0
    };
    let KEYWORDS = {
        keyword:
        // syntax
            'let in and or not ' +
            // control keywords
            'continue break if else foreach ' +
            // types
            'i32 i64 u32 u64 string error void ',
        built_in:
        // functions
        // - project
            'project ' +
            // - module
            'module mod ' +
            // - executable
            'executable bin binary ' +
            // library
            'library lib ' +
            // - add_subdirectory
            'add_subdirectory subdir ' +
            // print
            'print ',
        literal: 'true false ',
    };
    return {
        name: 'leafbuild',
        aliases: ['build.leaf'],
        case_insensitive: false,
        // keywords: KEYWORDS,
        contains: [
            {
                className: 'variable',
                begin: hljs.IDENT_RE,
                keywords: KEYWORDS
            },
            NUMBERS,
            STRINGS,
            hljs.C_LINE_COMMENT_MODE,
            hljs.C_BLOCK_COMMENT_MODE,
        ],
        // @ts-ignore
        exports: {
            strings: STRINGS,
        }
    };
}