// CodeMirror, copyright (c) by Marijn Haverbeke and others
// Distributed under an MIT license: https://codemirror.net/LICENSE

;(function (mod) {
    if (typeof exports == 'object' && typeof module == 'object')
        // CommonJS
        mod(require('../../lib/codemirror'))
    else if (typeof define == 'function' && define.amd)
        // AMD
        define(['../../lib/codemirror'], mod)
    // Plain browser env
    else mod(CodeMirror)
})(function (CodeMirror) {
    'use strict'

    CodeMirror.defineMode('asn.1', function (config, parserConfig) {
        var indentUnit = config.indentUnit,
            keywords = parserConfig.keywords || {},
            cmipVerbs = parserConfig.cmipVerbs || {},
            compareTypes = parserConfig.compareTypes || {},
            status = parserConfig.status || {},
            tags = parserConfig.tags || {},
            storage = parserConfig.storage || {},
            modifier = parserConfig.modifier || {},
            accessTypes = parserConfig.accessTypes || {},
            multiLineStrings = parserConfig.multiLineStrings,
            indentStatements = parserConfig.indentStatements !== false
        var isOperatorChar = /[\|\^]/
        var curPunc

        function tokenBase(stream, state) {
            var ch = stream.next()
            if (ch == '"' || ch == "'") {
                state.tokenize = tokenString(ch)
                return state.tokenize(stream, state)
            }
            if (/[\[\]\(\){}:=,;]/.test(ch)) {
                curPunc = ch
                return 'punctuation'
            }
            if (ch == '-') {
                if (stream.eat('-')) {
                    stream.skipToEnd()
                    return 'comment'
                }
            }
            if (/\d/.test(ch)) {
                stream.eatWhile(/[\w\.]/)
                return 'number'
            }
            if (isOperatorChar.test(ch)) {
                stream.eatWhile(isOperatorChar)
                return 'operator'
            }

            stream.eatWhile(/[\w\-]/)
            var cur = stream.current()
            if (keywords.propertyIsEnumerable(cur)) return 'keyword'
            if (cmipVerbs.propertyIsEnumerable(cur)) return 'variable cmipVerbs'
            if (compareTypes.propertyIsEnumerable(cur)) return 'atom compareTypes'
            if (status.propertyIsEnumerable(cur)) return 'comment status'
            if (tags.propertyIsEnumerable(cur)) return 'variable-3 tags'
            if (storage.propertyIsEnumerable(cur)) return 'builtin storage'
            if (modifier.propertyIsEnumerable(cur)) return 'string-2 modifier'
            if (accessTypes.propertyIsEnumerable(cur)) return 'atom accessTypes'

            return 'variable'
        }

        function tokenString(quote) {
            return function (stream, state) {
                var escaped = false,
                    next,
                    end = false
                while ((next = stream.next()) != null) {
                    if (next == quote && !escaped) {
                        var afterNext = stream.peek()
                        //look if the character if the quote is like the B in '10100010'B
                        if (afterNext) {
                            afterNext = afterNext.toLowerCase()
                            if (afterNext == 'b' || afterNext == 'h' || afterNext == 'o') stream.next()
                        }
                        end = true
                        break
                    }
                    escaped = !escaped && next == '\\'
                }
                if (end || !(escaped || multiLineStrings)) state.tokenize = null
                return 'string'
            }
        }

        function Context(indented, column, type, align, prev) {
            this.indented = indented
            this.column = column
            this.type = type
            this.align = align
            this.prev = prev
        }
        function pushContext(state, col, type) {
            var indent = state.indented
            if (state.context && state.context.type == 'statement') indent = state.context.indented
            return (state.context = new Context(indent, col, type, null, state.context))
        }
        function popContext(state) {
            var t = state.context.type
            if (t == ')' || t == ']' || t == '}') state.indented = state.context.indented
            return (state.context = state.context.prev)
        }

        //Interface
        return {
            startState: function (basecolumn) {
                return {
                    tokenize: null,
                    context: new Context((basecolumn || 0) - indentUnit, 0, 'top', false),
                    indented: 0,
                    startOfLine: true,
                }
            },

            token: function (stream, state) {
                var ctx = state.context
                if (stream.sol()) {
                    if (ctx.align == null) ctx.align = false
                    state.indented = stream.indentation()
                    state.startOfLine = true
                }
                if (stream.eatSpace()) return null
                curPunc = null
                var style = (state.tokenize || tokenBase)(stream, state)
                if (style == 'comment') return style
                if (ctx.align == null) ctx.align = true

                if ((curPunc == ';' || curPunc == ':' || curPunc == ',') && ctx.type == 'statement') {
                    popContext(state)
                } else if (curPunc == '{') pushContext(state, stream.column(), '}')
                else if (curPunc == '[') pushContext(state, stream.column(), ']')
                else if (curPunc == '(') pushContext(state, stream.column(), ')')
                else if (curPunc == '}') {
                    while (ctx.type == 'statement') ctx = popContext(state)
                    if (ctx.type == '}') ctx = popContext(state)
                    while (ctx.type == 'statement') ctx = popContext(state)
                } else if (curPunc == ctx.type) popContext(state)
                else if (indentStatements && (((ctx.type == '}' || ctx.type == 'top') && curPunc != ';') || (ctx.type == 'statement' && curPunc == 'newstatement')))
                    pushContext(state, stream.column(), 'statement')

                state.startOfLine = false
                return style
            },

            electricChars: '{}',
            lineComment: '--',
            fold: 'brace',
        }
    })

    function words(str) {
        var obj = {},
            words = str.split(' ')
        for (var i = 0; i < words.length; ++i) obj[words[i]] = true
        return obj
    }

    CodeMirror.defineMIME('text/x-ttcn-asn', {
        name: 'asn.1',
        keywords: words(
            'DEFINITIONS OBJECTS IF DERIVED INFORMATION ACTION' +
                ' REPLY ANY NAMED CHARACTERIZED BEHAVIOUR REGISTERED' +
                ' WITH AS IDENTIFIED CONSTRAINED BY PRESENT BEGIN' +
                ' IMPORTS FROM UNITS SYNTAX MIN-ACCESS MAX-ACCESS' +
                ' MINACCESS MAXACCESS REVISION STATUS DESCRIPTION' +
                ' SEQUENCE SET COMPONENTS OF CHOICE DistinguishedName' +
                ' ENUMERATED SIZE MODULE END INDEX AUGMENTS EXTENSIBILITY' +
                ' IMPLIED EXPORTS'
        ),
        cmipVerbs: words('ACTIONS ADD GET NOTIFICATIONS REPLACE REMOVE'),
        compareTypes: words(
            'OPTIONAL DEFAULT MANAGED MODULE-TYPE MODULE_IDENTITY' +
                ' MODULE-COMPLIANCE OBJECT-TYPE OBJECT-IDENTITY' +
                ' OBJECT-COMPLIANCE MODE CONFIRMED CONDITIONAL' +
                ' SUBORDINATE SUPERIOR CLASS TRUE FALSE NULL' +
                ' TEXTUAL-CONVENTION'
        ),
        status: words('current deprecated mandatory obsolete'),
        tags: words('APPLICATION AUTOMATIC EXPLICIT IMPLICIT PRIVATE TAGS' + ' UNIVERSAL'),
        storage: words(
            'BOOLEAN INTEGER OBJECT IDENTIFIER BIT OCTET STRING' +
                ' UTCTime InterfaceIndex IANAifType CMIP-Attribute' +
                ' REAL PACKAGE PACKAGES IpAddress PhysAddress' +
                ' NetworkAddress BITS BMPString TimeStamp TimeTicks' +
                ' TruthValue RowStatus DisplayString GeneralString' +
                ' GraphicString IA5String NumericString' +
                ' PrintableString SnmpAdminString TeletexString' +
                ' UTF8String VideotexString VisibleString StringStore' +
                ' ISO646String T61String UniversalString Unsigned32' +
                ' Integer32 Gauge Gauge32 Counter Counter32 Counter64'
        ),
        modifier: words('ATTRIBUTE ATTRIBUTES MANDATORY-GROUP MANDATORY-GROUPS' + ' GROUP GROUPS ELEMENTS EQUALITY ORDERING SUBSTRINGS' + ' DEFINED'),
        accessTypes: words('not-accessible accessible-for-notify read-only' + ' read-create read-write'),
        multiLineStrings: true,
    })
})