| 1 | class TokenBuffer extends Array {
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| 2 | constructor (items) {
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| 3 | typeof items === 'number' ? super(items) : super()
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| 4 |
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| 5 | // if (Array.isArray(items)) {
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| 6 | // items.forEach((item) => this.push(item))
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| 7 | // }
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| 8 | // this.index = 0
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| 9 | // this.indentionSize = 2
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| 10 | }
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| 11 |
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| 12 | find (type, value, index = 0) {
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| 13 | for (let i = index; i < this.length; i++) {
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| 14 | if (this.match(type, value, i)) {
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| 15 | return i
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| 16 | }
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| 17 | }
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| 18 |
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| 19 | return -1
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| 20 | }
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| 21 |
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| 22 | match (type, value, index = 0) {
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| 23 | const token = this[index]
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| 24 | // console.log('MATCH INDEX', token, type, value, index)
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| 25 | if (!token) {
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| 26 | return false
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| 27 | }
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| 28 |
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| 29 | if (type === 'indention' && value) {
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| 30 | switch (value) {
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| 31 | case '>=': return token.value >= token.indention
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| 32 | case '>': return token.value > token.indention
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| 33 | case '==': return token.value === token.indention
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| 34 | case '<': return token.value < token.indention
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| 35 | case '<=': return token.value <= token.indention
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| 36 | }
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| 37 |
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| 38 | return false
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| 39 | }
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| 40 |
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| 41 | if (value && Array.isArray(value)) {
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| 42 | return value.indexOf(token.value) >= 0
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| 43 | } else if (value && value instanceof RegExp) {
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| 44 | return value.test(token.value)
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| 45 | } else if (value && token.value !== value) {
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| 46 | return false
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| 47 | }
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| 48 |
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| 49 | return Array.isArray(type)
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| 50 | ? type.some((t) => this.matchType(token, t))
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| 51 | : this.matchType(token, type)
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| 52 | }
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| 53 |
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| 54 | matchType (token, type) {
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| 55 | if (type === 'keyword') {
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| 56 | return token.type === 'identifier' && token.isKeyword
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| 57 | }
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| 58 |
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| 59 | return token.type === type
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| 60 | }
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| 61 |
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| 62 | getIndention () {
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| 63 | return this.length ? this[0].indention : 0
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| 64 | }
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| 65 |
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| 66 | // match (type, value, offset) {
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| 67 | // return this.expect(type, value, this.index + offset)
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| 68 | // }
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| 69 |
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| 70 | // lastIndention (mode, indention) {
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| 71 | // indention = Math.max(indention, 0)
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| 72 | //
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| 73 | // const currentIndention = this.getIndention()
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| 74 | // // console.log('INDENTION CHECK', currentIndention, mode, indention)
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| 75 | //
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| 76 | // if (mode === 'eq') {
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| 77 | // return currentIndention === indention
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| 78 | // } else if (mode === 'lt') {
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| 79 | // return currentIndention < indention
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| 80 | // } else if (mode === 'lte') {
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| 81 | // return currentIndention <= indention
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| 82 | // } else if (mode === 'gt') {
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| 83 | // return currentIndention > indention
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| 84 | // } else if (mode === 'gte') {
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| 85 | // return currentIndention >= indention
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| 86 | // } else {
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| 87 | // throw new Error(`Wrong mode param! '${mode}'`)
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| 88 | // }
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| 89 | // }
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| 90 |
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| 91 | // isIndention (mode, indention, curIndention) {
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| 92 | // if (typeof indention === 'object') {
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| 93 | // if (indention.type !== 'indention') {
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| 94 | // return false
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| 95 | // }
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| 96 | //
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| 97 | // indention = indention.value
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| 98 | // }
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| 99 | //
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| 100 | // indention = Math.max(indention, 0)
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| 101 | // const token = this.current()
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| 102 | //
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| 103 | // if (curIndention === undefined && token && token.type !== 'indention') {
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| 104 | // return false
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| 105 | // }
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| 106 | //
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| 107 | // const currentIndention = curIndention || (token === null ? 0 : token.value)
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| 108 | // // console.log('INDENTION CHECK', currentIndention, mode, indention)
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| 109 | //
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| 110 | // if (mode === 'eq') {
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| 111 | // return currentIndention === indention
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| 112 | // } else if (mode === 'lt') {
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| 113 | // return currentIndention < indention
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| 114 | // } else if (mode === 'lte') {
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| 115 | // return currentIndention <= indention
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| 116 | // } else if (mode === 'gt') {
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| 117 | // return currentIndention > indention
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| 118 | // } else if (mode === 'gte') {
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| 119 | // return currentIndention >= indention
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| 120 | // } else {
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| 121 | // throw new Error(`Wrong mode param! '${mode}'`)
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| 122 | // }
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| 123 | // }
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| 124 | //
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| 125 | // print (msg) {
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| 126 | // const startIndex = Math.max(this.index - 2, 0)
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| 127 | // const endIndex = Math.min(startIndex + 5, this.length)
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| 128 | // // console.log('Len:', this.length)
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| 129 | // // console.log('Start:', startIndex)
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| 130 | // // console.log('End:', endIndex)
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| 131 | // // console.log('Index:', this.index)
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| 132 | // // console.log('Stack', this)
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| 133 | // const items = this.slice(startIndex, endIndex)
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| 134 | // if (msg) {
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| 135 | // console.log(` + ${msg}`)
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| 136 | // }
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| 137 | //
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| 138 | // // console.log('Items:', items)
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| 139 | // items.forEach((item, index) => {
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| 140 | // const arrow = this.index - startIndex === index ? '>' : ' '
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| 141 | // console.log(`${arrow}| ${item.type} ${item.value}`)
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| 142 | // })
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| 143 | // }
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| 144 | //
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| 145 | // lastItem () {
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| 146 | // return this.index >= this.length - 1
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| 147 | // }
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| 148 | //
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| 149 | // changeType (type) {
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| 150 | // this[this.index].type = type
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| 151 | // }
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| 152 | }
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| 153 |
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| 154 | module.exports = TokenBuffer
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