@messageformat/parser/lib/lexer.js

An AST parser for ICU MessageFormat strings

"use strict";
var __importDefault = (this && this.__importDefault) || function (mod) {
    return (mod && mod.__esModule) ? mod : { "default": mod };
};
Object.defineProperty(exports, "__esModule", { value: true });
exports.lexer = exports.states = void 0;
const moo_1 = __importDefault(require("moo"));
exports.states = {
    body: {
        doubleapos: { match: "''", value: () => "'" },
        quoted: {
            lineBreaks: true,
            match: /'[{}#](?:[^']|'')*'(?!')/u,
            value: src => src.slice(1, -1).replace(/''/g, "'")
        },
        argument: {
            lineBreaks: true,
            match: /\{\s*[^\p{Pat_Syn}\p{Pat_WS}]+\s*/u,
            push: 'arg',
            value: src => src.substring(1).trim()
        },
        octothorpe: '#',
        end: { match: '}', pop: 1 },
        content: { lineBreaks: true, match: /[^][^{}#']*/u }
    },
    arg: {
        select: {
            lineBreaks: true,
            match: /,\s*(?:plural|select|selectordinal)\s*,\s*/u,
            next: 'select',
            value: src => src.split(',')[1].trim()
        },
        'func-args': {
            lineBreaks: true,
            match: /,\s*[^\p{Pat_Syn}\p{Pat_WS}]+\s*,/u,
            next: 'body',
            value: src => src.split(',')[1].trim()
        },
        'func-simple': {
            lineBreaks: true,
            match: /,\s*[^\p{Pat_Syn}\p{Pat_WS}]+\s*/u,
            value: src => src.substring(1).trim()
        },
        end: { match: '}', pop: 1 }
    },
    select: {
        offset: {
            lineBreaks: true,
            match: /\s*offset\s*:\s*\d+\s*/u,
            value: src => src.split(':')[1].trim()
        },
        case: {
            lineBreaks: true,
            match: /\s*(?:=\d+|[^\p{Pat_Syn}\p{Pat_WS}]+)\s*\{/u,
            push: 'body',
            value: src => src.substring(0, src.indexOf('{')).trim()
        },
        end: { match: /\s*\}/u, pop: 1 }
    }
};
exports.lexer = moo_1.default.states(exports.states);