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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
mod(require("../../lib/codemirror"), require("../yaml/yaml"))
else if (typeof define == "function" && define.amd) // AMD
define(["../../lib/codemirror", "../yaml/yaml"], mod)
else // Plain browser env
mod(CodeMirror)
})(function (CodeMirror) {
var START = 0, FRONTMATTER = 1, BODY = 2
// a mixed mode for Markdown text with an optional YAML front matter
CodeMirror.defineMode("yaml-frontmatter", function (config, parserConfig) {
var yamlMode = CodeMirror.getMode(config, "yaml")
var innerMode = CodeMirror.getMode(config, parserConfig && parserConfig.base || "gfm")
function localMode(state) {
return state.state == FRONTMATTER ? {mode: yamlMode, state: state.yaml} : {mode: innerMode, state: state.inner}
}
return {
startState: function () {
return {
state: START,
yaml: null,
inner: CodeMirror.startState(innerMode)
}
},
copyState: function (state) {
return {
state: state.state,
yaml: state.yaml && CodeMirror.copyState(yamlMode, state.yaml),
inner: CodeMirror.copyState(innerMode, state.inner)
}
},
token: function (stream, state) {
if (state.state == START) {
if (stream.match('---', false)) {
state.state = FRONTMATTER
state.yaml = CodeMirror.startState(yamlMode)
return yamlMode.token(stream, state.yaml)
} else {
state.state = BODY
return innerMode.token(stream, state.inner)
}
} else if (state.state == FRONTMATTER) {
var end = stream.sol() && stream.match(/(---|\.\.\.)/, false)
var style = yamlMode.token(stream, state.yaml)
if (end) {
state.state = BODY
state.yaml = null
}
return style
} else {
return innerMode.token(stream, state.inner)
}
},
innerMode: localMode,
indent: function(state, a, b) {
var m = localMode(state)
return m.mode.indent ? m.mode.indent(m.state, a, b) : CodeMirror.Pass
},
blankLine: function (state) {
var m = localMode(state)
if (m.mode.blankLine) return m.mode.blankLine(m.state)
}
}
})
});