1 | "use strict";
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2 |
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3 | Object.defineProperty(exports, "__esModule", {
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4 | value: true
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5 | });
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6 | exports.default = void 0;
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7 | class Buffer {
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8 | constructor(map, indentChar) {
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9 | this._map = null;
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10 | this._buf = "";
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11 | this._str = "";
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12 | this._appendCount = 0;
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13 | this._last = 0;
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14 | this._queue = [];
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15 | this._queueCursor = 0;
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16 | this._canMarkIdName = true;
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17 | this._indentChar = "";
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18 | this._fastIndentations = [];
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19 | this._position = {
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20 | line: 1,
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21 | column: 0
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22 | };
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23 | this._sourcePosition = {
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24 | identifierName: undefined,
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25 | identifierNamePos: undefined,
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26 | line: undefined,
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27 | column: undefined,
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28 | filename: undefined
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29 | };
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30 | this._map = map;
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31 | this._indentChar = indentChar;
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32 | for (let i = 0; i < 64; i++) {
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33 | this._fastIndentations.push(indentChar.repeat(i));
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34 | }
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35 | this._allocQueue();
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36 | }
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37 | _allocQueue() {
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38 | const queue = this._queue;
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39 | for (let i = 0; i < 16; i++) {
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40 | queue.push({
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41 | char: 0,
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42 | repeat: 1,
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43 | line: undefined,
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44 | column: undefined,
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45 | identifierName: undefined,
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46 | identifierNamePos: undefined,
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47 | filename: ""
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48 | });
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49 | }
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50 | }
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51 | _pushQueue(char, repeat, line, column, filename) {
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52 | const cursor = this._queueCursor;
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53 | if (cursor === this._queue.length) {
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54 | this._allocQueue();
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55 | }
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56 | const item = this._queue[cursor];
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57 | item.char = char;
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58 | item.repeat = repeat;
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59 | item.line = line;
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60 | item.column = column;
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61 | item.filename = filename;
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62 | this._queueCursor++;
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63 | }
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64 | _popQueue() {
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65 | if (this._queueCursor === 0) {
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66 | throw new Error("Cannot pop from empty queue");
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67 | }
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68 | return this._queue[--this._queueCursor];
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69 | }
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70 | get() {
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71 | this._flush();
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72 | const map = this._map;
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73 | const result = {
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74 | code: (this._buf + this._str).trimRight(),
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75 | decodedMap: map == null ? void 0 : map.getDecoded(),
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76 | get __mergedMap() {
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77 | return this.map;
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78 | },
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79 | get map() {
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80 | const resultMap = map ? map.get() : null;
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81 | result.map = resultMap;
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82 | return resultMap;
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83 | },
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84 | set map(value) {
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85 | Object.defineProperty(result, "map", {
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86 | value,
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87 | writable: true
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88 | });
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89 | },
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90 | get rawMappings() {
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91 | const mappings = map == null ? void 0 : map.getRawMappings();
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92 | result.rawMappings = mappings;
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93 | return mappings;
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94 | },
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95 | set rawMappings(value) {
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96 | Object.defineProperty(result, "rawMappings", {
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97 | value,
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98 | writable: true
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99 | });
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100 | }
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101 | };
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102 | return result;
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103 | }
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104 | append(str, maybeNewline) {
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105 | this._flush();
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106 | this._append(str, this._sourcePosition, maybeNewline);
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107 | }
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108 | appendChar(char) {
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109 | this._flush();
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110 | this._appendChar(char, 1, this._sourcePosition);
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111 | }
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112 | queue(char) {
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113 | if (char === 10) {
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114 | while (this._queueCursor !== 0) {
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115 | const char = this._queue[this._queueCursor - 1].char;
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116 | if (char !== 32 && char !== 9) {
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117 | break;
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118 | }
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119 | this._queueCursor--;
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120 | }
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121 | }
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122 | const sourcePosition = this._sourcePosition;
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123 | this._pushQueue(char, 1, sourcePosition.line, sourcePosition.column, sourcePosition.filename);
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124 | }
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125 | queueIndentation(repeat) {
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126 | if (repeat === 0) return;
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127 | this._pushQueue(-1, repeat, undefined, undefined, undefined);
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128 | }
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129 | _flush() {
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130 | const queueCursor = this._queueCursor;
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131 | const queue = this._queue;
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132 | for (let i = 0; i < queueCursor; i++) {
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133 | const item = queue[i];
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134 | this._appendChar(item.char, item.repeat, item);
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135 | }
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136 | this._queueCursor = 0;
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137 | }
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138 | _appendChar(char, repeat, sourcePos) {
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139 | this._last = char;
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140 | if (char === -1) {
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141 | const fastIndentation = this._fastIndentations[repeat];
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142 | if (fastIndentation !== undefined) {
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143 | this._str += fastIndentation;
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144 | } else {
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145 | this._str += repeat > 1 ? this._indentChar.repeat(repeat) : this._indentChar;
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146 | }
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147 | } else {
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148 | this._str += repeat > 1 ? String.fromCharCode(char).repeat(repeat) : String.fromCharCode(char);
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149 | }
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150 | if (char !== 10) {
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151 | this._mark(sourcePos.line, sourcePos.column, sourcePos.identifierName, sourcePos.identifierNamePos, sourcePos.filename);
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152 | this._position.column += repeat;
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153 | } else {
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154 | this._position.line++;
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155 | this._position.column = 0;
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156 | }
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157 | if (this._canMarkIdName) {
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158 | sourcePos.identifierName = undefined;
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159 | sourcePos.identifierNamePos = undefined;
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160 | }
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161 | }
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162 | _append(str, sourcePos, maybeNewline) {
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163 | const len = str.length;
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164 | const position = this._position;
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165 | this._last = str.charCodeAt(len - 1);
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166 | if (++this._appendCount > 4096) {
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167 | +this._str;
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168 | this._buf += this._str;
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169 | this._str = str;
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170 | this._appendCount = 0;
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171 | } else {
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172 | this._str += str;
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173 | }
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174 | if (!maybeNewline && !this._map) {
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175 | position.column += len;
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176 | return;
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177 | }
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178 | const {
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179 | column,
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180 | identifierName,
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181 | identifierNamePos,
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182 | filename
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183 | } = sourcePos;
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184 | let line = sourcePos.line;
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185 | if ((identifierName != null || identifierNamePos != null) && this._canMarkIdName) {
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186 | sourcePos.identifierName = undefined;
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187 | sourcePos.identifierNamePos = undefined;
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188 | }
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189 | let i = str.indexOf("\n");
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190 | let last = 0;
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191 | if (i !== 0) {
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192 | this._mark(line, column, identifierName, identifierNamePos, filename);
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193 | }
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194 | while (i !== -1) {
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195 | position.line++;
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196 | position.column = 0;
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197 | last = i + 1;
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198 | if (last < len && line !== undefined) {
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199 | this._mark(++line, 0, null, null, filename);
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200 | }
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201 | i = str.indexOf("\n", last);
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202 | }
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203 | position.column += len - last;
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204 | }
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205 | _mark(line, column, identifierName, identifierNamePos, filename) {
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206 | var _this$_map;
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207 | (_this$_map = this._map) == null || _this$_map.mark(this._position, line, column, identifierName, identifierNamePos, filename);
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208 | }
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209 | removeTrailingNewline() {
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210 | const queueCursor = this._queueCursor;
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211 | if (queueCursor !== 0 && this._queue[queueCursor - 1].char === 10) {
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212 | this._queueCursor--;
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213 | }
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214 | }
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215 | removeLastSemicolon() {
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216 | const queueCursor = this._queueCursor;
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217 | if (queueCursor !== 0 && this._queue[queueCursor - 1].char === 59) {
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218 | this._queueCursor--;
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219 | }
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220 | }
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221 | getLastChar() {
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222 | const queueCursor = this._queueCursor;
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223 | return queueCursor !== 0 ? this._queue[queueCursor - 1].char : this._last;
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224 | }
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225 | getNewlineCount() {
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226 | const queueCursor = this._queueCursor;
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227 | let count = 0;
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228 | if (queueCursor === 0) return this._last === 10 ? 1 : 0;
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229 | for (let i = queueCursor - 1; i >= 0; i--) {
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230 | if (this._queue[i].char !== 10) {
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231 | break;
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232 | }
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233 | count++;
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234 | }
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235 | return count === queueCursor && this._last === 10 ? count + 1 : count;
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236 | }
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237 | endsWithCharAndNewline() {
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238 | const queue = this._queue;
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239 | const queueCursor = this._queueCursor;
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240 | if (queueCursor !== 0) {
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241 | const lastCp = queue[queueCursor - 1].char;
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242 | if (lastCp !== 10) return;
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243 | if (queueCursor > 1) {
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244 | return queue[queueCursor - 2].char;
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245 | } else {
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246 | return this._last;
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247 | }
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248 | }
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249 | }
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250 | hasContent() {
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251 | return this._queueCursor !== 0 || !!this._last;
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252 | }
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253 | exactSource(loc, cb) {
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254 | if (!this._map) {
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255 | cb();
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256 | return;
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257 | }
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258 | this.source("start", loc);
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259 | const identifierName = loc.identifierName;
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260 | const sourcePos = this._sourcePosition;
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261 | if (identifierName) {
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262 | this._canMarkIdName = false;
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263 | sourcePos.identifierName = identifierName;
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264 | }
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265 | cb();
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266 | if (identifierName) {
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267 | this._canMarkIdName = true;
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268 | sourcePos.identifierName = undefined;
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269 | sourcePos.identifierNamePos = undefined;
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270 | }
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271 | this.source("end", loc);
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272 | }
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273 | source(prop, loc) {
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274 | if (!this._map) return;
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275 | this._normalizePosition(prop, loc, 0);
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276 | }
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277 | sourceWithOffset(prop, loc, columnOffset) {
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278 | if (!this._map) return;
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279 | this._normalizePosition(prop, loc, columnOffset);
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280 | }
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281 | withSource(prop, loc, cb) {
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282 | if (this._map) {
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283 | this.source(prop, loc);
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284 | }
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285 | cb();
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286 | }
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287 | _normalizePosition(prop, loc, columnOffset) {
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288 | const pos = loc[prop];
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289 | const target = this._sourcePosition;
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290 | if (pos) {
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291 | target.line = pos.line;
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292 | target.column = Math.max(pos.column + columnOffset, 0);
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293 | target.filename = loc.filename;
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294 | }
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295 | }
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296 | getCurrentColumn() {
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297 | const queue = this._queue;
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298 | const queueCursor = this._queueCursor;
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299 | let lastIndex = -1;
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300 | let len = 0;
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301 | for (let i = 0; i < queueCursor; i++) {
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302 | const item = queue[i];
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303 | if (item.char === 10) {
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304 | lastIndex = len;
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305 | }
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306 | len += item.repeat;
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307 | }
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308 | return lastIndex === -1 ? this._position.column + len : len - 1 - lastIndex;
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309 | }
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310 | getCurrentLine() {
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311 | let count = 0;
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312 | const queue = this._queue;
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313 | for (let i = 0; i < this._queueCursor; i++) {
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314 | if (queue[i].char === 10) {
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315 | count++;
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316 | }
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317 | }
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318 | return this._position.line + count;
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319 | }
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320 | }
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321 | exports.default = Buffer;
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322 |
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323 |
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