mozilla-central/devtools/client/shared/sourceeditor/codemirror/mode/jsx/jsx.js (file symbol)

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// 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
else if (typeof define == "function" && define.amd) // AMD
define(["../../lib/codemirror", "../xml/xml", "../javascript/javascript"], mod)
else // Plain browser env
mod(CodeMirror)
})(function(CodeMirror) {
"use strict"
// Depth means the amount of open braces in JS context, in XML
// context 0 means not in tag, 1 means in tag, and 2 means in tag
// and js block comment.
function Context(state, mode, depth, prev) {
this.state = state; this.mode = mode; this.depth = depth; this.prev = prev
}
function copyContext(context) {
return new Context(CodeMirror.copyState(context.mode, context.state),
context.mode,
context.depth,
context.prev && copyContext(context.prev))
}
CodeMirror.defineMode("jsx", function(config, modeConfig) {
var xmlMode = CodeMirror.getMode(config, {name: "xml", allowMissing: true, multilineTagIndentPastTag: false, allowMissingTagName: true})
var jsMode = CodeMirror.getMode(config, modeConfig && modeConfig.base || "javascript")
function flatXMLIndent(state) {
var tagName = state.tagName
state.tagName = null
var result = xmlMode.indent(state, "", "")
state.tagName = tagName
return result
}
function token(stream, state) {
if (state.context.mode == xmlMode)
return xmlToken(stream, state, state.context)
else
return jsToken(stream, state, state.context)
}
function xmlToken(stream, state, cx) {
if (cx.depth == 2) { // Inside a JS /* */ comment
if (stream.match(/^.*?\*\//)) cx.depth = 1
else stream.skipToEnd()
return "comment"
}
if (stream.peek() == "{") {
xmlMode.skipAttribute(cx.state)
var indent = flatXMLIndent(cx.state), xmlContext = cx.state.context
// If JS starts on same line as tag
if (xmlContext && stream.match(/^[^>]*>\s*$/, false)) {
while (xmlContext.prev && !xmlContext.startOfLine)
xmlContext = xmlContext.prev
// If tag starts the line, use XML indentation level
if (xmlContext.startOfLine) indent -= config.indentUnit
// Else use JS indentation level
else if (cx.prev.state.lexical) indent = cx.prev.state.lexical.indented
// Else if inside of tag
} else if (cx.depth == 1) {
indent += config.indentUnit
}
state.context = new Context(CodeMirror.startState(jsMode, indent),
jsMode, 0, state.context)
return null
}
if (cx.depth == 1) { // Inside of tag
if (stream.peek() == "<") { // Tag inside of tag
xmlMode.skipAttribute(cx.state)
state.context = new Context(CodeMirror.startState(xmlMode, flatXMLIndent(cx.state)),
xmlMode, 0, state.context)
return null
} else if (stream.match("//")) {
stream.skipToEnd()
return "comment"
} else if (stream.match("/*")) {
cx.depth = 2
return token(stream, state)
}
}
var style = xmlMode.token(stream, cx.state), cur = stream.current(), stop
if (/\btag\b/.test(style)) {
if (/>$/.test(cur)) {
if (cx.state.context) cx.depth = 0
else state.context = state.context.prev
} else if (/^</.test(cur)) {
cx.depth = 1
}
} else if (!style && (stop = cur.indexOf("{")) > -1) {
stream.backUp(cur.length - stop)
}
return style
}
function jsToken(stream, state, cx) {
if (stream.peek() == "<" && jsMode.expressionAllowed(stream, cx.state)) {
jsMode.skipExpression(cx.state)
state.context = new Context(CodeMirror.startState(xmlMode, jsMode.indent(cx.state, "", "")),
xmlMode, 0, state.context)
return null
}
var style = jsMode.token(stream, cx.state)
if (!style && cx.depth != null) {
var cur = stream.current()
if (cur == "{") {
cx.depth++
} else if (cur == "}") {
if (--cx.depth == 0) state.context = state.context.prev
}
}
return style
}
return {
startState: function() {
return {context: new Context(CodeMirror.startState(jsMode), jsMode)}
},
copyState: function(state) {
return {context: copyContext(state.context)}
},
token: token,
indent: function(state, textAfter, fullLine) {
return state.context.mode.indent(state.context.state, textAfter, fullLine)
},
innerMode: function(state) {
return state.context
}
}
}, "xml", "javascript")
CodeMirror.defineMIME("text/jsx", "jsx")
CodeMirror.defineMIME("text/typescript-jsx", {name: "jsx", base: {name: "javascript", typescript: true}})
});