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1 // CodeMirror, copyright (c) by Marijn Haverbeke and others
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2 // Distributed under an MIT license: https://codemirror.net/5/LICENSE
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3
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4 (function(mod) {
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5 if (typeof exports == "object" && typeof module == "object") // CommonJS
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6 mod(require("../../lib/codemirror"), require("../xml/xml"), require("../javascript/javascript"))
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7 else if (typeof define == "function" && define.amd) // AMD
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8 define(["../../lib/codemirror", "../xml/xml", "../javascript/javascript"], mod)
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9 else // Plain browser env
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10 mod(CodeMirror)
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11 })(function(CodeMirror) {
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12 "use strict"
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13
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14 // Depth means the amount of open braces in JS context, in XML
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15 // context 0 means not in tag, 1 means in tag, and 2 means in tag
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16 // and js block comment.
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17 function Context(state, mode, depth, prev) {
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18 this.state = state; this.mode = mode; this.depth = depth; this.prev = prev
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19 }
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20
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21 function copyContext(context) {
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22 return new Context(CodeMirror.copyState(context.mode, context.state),
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23 context.mode,
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24 context.depth,
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25 context.prev && copyContext(context.prev))
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26 }
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27
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28 CodeMirror.defineMode("jsx", function(config, modeConfig) {
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29 var xmlMode = CodeMirror.getMode(config, {name: "xml", allowMissing: true, multilineTagIndentPastTag: false, allowMissingTagName: true})
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30 var jsMode = CodeMirror.getMode(config, modeConfig && modeConfig.base || "javascript")
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31
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32 function flatXMLIndent(state) {
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33 var tagName = state.tagName
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34 state.tagName = null
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35 var result = xmlMode.indent(state, "", "")
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36 state.tagName = tagName
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37 return result
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38 }
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39
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40 function token(stream, state) {
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41 if (state.context.mode == xmlMode)
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42 return xmlToken(stream, state, state.context)
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43 else
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44 return jsToken(stream, state, state.context)
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45 }
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46
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47 function xmlToken(stream, state, cx) {
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48 if (cx.depth == 2) { // Inside a JS /* */ comment
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49 if (stream.match(/^.*?\*\//)) cx.depth = 1
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50 else stream.skipToEnd()
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51 return "comment"
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52 }
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53
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54 if (stream.peek() == "{") {
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55 xmlMode.skipAttribute(cx.state)
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56
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57 var indent = flatXMLIndent(cx.state), xmlContext = cx.state.context
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58 // If JS starts on same line as tag
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59 if (xmlContext && stream.match(/^[^>]*>\s*$/, false)) {
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60 while (xmlContext.prev && !xmlContext.startOfLine)
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61 xmlContext = xmlContext.prev
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62 // If tag starts the line, use XML indentation level
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63 if (xmlContext.startOfLine) indent -= config.indentUnit
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64 // Else use JS indentation level
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65 else if (cx.prev.state.lexical) indent = cx.prev.state.lexical.indented
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66 // Else if inside of tag
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67 } else if (cx.depth == 1) {
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68 indent += config.indentUnit
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69 }
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70
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71 state.context = new Context(CodeMirror.startState(jsMode, indent),
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72 jsMode, 0, state.context)
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73 return null
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74 }
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75
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76 if (cx.depth == 1) { // Inside of tag
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77 if (stream.peek() == "<") { // Tag inside of tag
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78 xmlMode.skipAttribute(cx.state)
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79 state.context = new Context(CodeMirror.startState(xmlMode, flatXMLIndent(cx.state)),
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80 xmlMode, 0, state.context)
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81 return null
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82 } else if (stream.match("//")) {
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83 stream.skipToEnd()
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84 return "comment"
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85 } else if (stream.match("/*")) {
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86 cx.depth = 2
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87 return token(stream, state)
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88 }
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89 }
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90
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91 var style = xmlMode.token(stream, cx.state), cur = stream.current(), stop
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92 if (/\btag\b/.test(style)) {
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93 if (/>$/.test(cur)) {
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94 if (cx.state.context) cx.depth = 0
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95 else state.context = state.context.prev
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96 } else if (/^</.test(cur)) {
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97 cx.depth = 1
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98 }
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99 } else if (!style && (stop = cur.indexOf("{")) > -1) {
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100 stream.backUp(cur.length - stop)
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101 }
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102 return style
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103 }
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104
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105 function jsToken(stream, state, cx) {
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106 if (stream.peek() == "<" && !stream.match(/^<([^<>]|<[^>]*>)+,\s*>/, false) &&
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107 jsMode.expressionAllowed(stream, cx.state)) {
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108 state.context = new Context(CodeMirror.startState(xmlMode, jsMode.indent(cx.state, "", "")),
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109 xmlMode, 0, state.context)
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110 jsMode.skipExpression(cx.state)
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111 return null
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112 }
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113
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114 var style = jsMode.token(stream, cx.state)
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115 if (!style && cx.depth != null) {
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116 var cur = stream.current()
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117 if (cur == "{") {
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118 cx.depth++
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119 } else if (cur == "}") {
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120 if (--cx.depth == 0) state.context = state.context.prev
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121 }
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122 }
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123 return style
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124 }
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125
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126 return {
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127 startState: function() {
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128 return {context: new Context(CodeMirror.startState(jsMode), jsMode)}
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129 },
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130
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131 copyState: function(state) {
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132 return {context: copyContext(state.context)}
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133 },
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134
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135 token: token,
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136
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137 indent: function(state, textAfter, fullLine) {
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138 return state.context.mode.indent(state.context.state, textAfter, fullLine)
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139 },
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140
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141 innerMode: function(state) {
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142 return state.context
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143 }
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144 }
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145 }, "xml", "javascript")
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146
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147 CodeMirror.defineMIME("text/jsx", "jsx")
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148 CodeMirror.defineMIME("text/typescript-jsx", {name: "jsx", base: {name: "javascript", typescript: true}})
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149 });
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