planning

node_modules/micromark/lib/tokenize/list.js

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+'use strict'
+
+var asciiDigit = require('../character/ascii-digit.js')
+var codes = require('../character/codes.js')
+var markdownSpace = require('../character/markdown-space.js')
+var constants = require('../constant/constants.js')
+var types = require('../constant/types.js')
+var prefixSize = require('../util/prefix-size.js')
+var sizeChunks = require('../util/size-chunks.js')
+var factorySpace = require('./factory-space.js')
+var partialBlankLine = require('./partial-blank-line.js')
+var thematicBreak = require('./thematic-break.js')
+
+var list = {
+  name: 'list',
+  tokenize: tokenizeListStart,
+  continuation: {tokenize: tokenizeListContinuation},
+  exit: tokenizeListEnd
+}
+
+var listItemPrefixWhitespaceConstruct = {
+  tokenize: tokenizeListItemPrefixWhitespace,
+  partial: true
+}
+var indentConstruct = {tokenize: tokenizeIndent, partial: true}
+
+function tokenizeListStart(effects, ok, nok) {
+  var self = this
+  var initialSize = prefixSize(self.events, types.linePrefix)
+  var size = 0
+
+  return start
+
+  function start(code) {
+    var kind =
+      self.containerState.type ||
+      (code === codes.asterisk || code === codes.plusSign || code === codes.dash
+        ? types.listUnordered
+        : types.listOrdered)
+
+    if (
+      kind === types.listUnordered
+        ? !self.containerState.marker || code === self.containerState.marker
+        : asciiDigit(code)
+    ) {
+      if (!self.containerState.type) {
+        self.containerState.type = kind
+        effects.enter(kind, {_container: true})
+      }
+
+      if (kind === types.listUnordered) {
+        effects.enter(types.listItemPrefix)
+        return code === codes.asterisk || code === codes.dash
+          ? effects.check(thematicBreak, nok, atMarker)(code)
+          : atMarker(code)
+      }
+
+      if (!self.interrupt || code === codes.digit1) {
+        effects.enter(types.listItemPrefix)
+        effects.enter(types.listItemValue)
+        return inside(code)
+      }
+    }
+
+    return nok(code)
+  }
+
+  function inside(code) {
+    if (asciiDigit(code) && ++size < constants.listItemValueSizeMax) {
+      effects.consume(code)
+      return inside
+    }
+
+    if (
+      (!self.interrupt || size < 2) &&
+      (self.containerState.marker
+        ? code === self.containerState.marker
+        : code === codes.rightParenthesis || code === codes.dot)
+    ) {
+      effects.exit(types.listItemValue)
+      return atMarker(code)
+    }
+
+    return nok(code)
+  }
+
+  function atMarker(code) {
+    effects.enter(types.listItemMarker)
+    effects.consume(code)
+    effects.exit(types.listItemMarker)
+    self.containerState.marker = self.containerState.marker || code
+    return effects.check(
+      partialBlankLine,
+      // Can’t be empty when interrupting.
+      self.interrupt ? nok : onBlank,
+      effects.attempt(
+        listItemPrefixWhitespaceConstruct,
+        endOfPrefix,
+        otherPrefix
+      )
+    )
+  }
+
+  function onBlank(code) {
+    self.containerState.initialBlankLine = true
+    initialSize++
+    return endOfPrefix(code)
+  }
+
+  function otherPrefix(code) {
+    if (markdownSpace(code)) {
+      effects.enter(types.listItemPrefixWhitespace)
+      effects.consume(code)
+      effects.exit(types.listItemPrefixWhitespace)
+      return endOfPrefix
+    }
+
+    return nok(code)
+  }
+
+  function endOfPrefix(code) {
+    self.containerState.size =
+      initialSize +
+      sizeChunks(self.sliceStream(effects.exit(types.listItemPrefix)))
+    return ok(code)
+  }
+}
+
+function tokenizeListContinuation(effects, ok, nok) {
+  var self = this
+
+  self.containerState._closeFlow = undefined
+
+  return effects.check(partialBlankLine, onBlank, notBlank)
+
+  function onBlank(code) {
+    self.containerState.furtherBlankLines =
+      self.containerState.furtherBlankLines ||
+      self.containerState.initialBlankLine
+
+    // We have a blank line.
+    // Still, try to consume at most the items size.
+    return factorySpace(
+      effects,
+      ok,
+      types.listItemIndent,
+      self.containerState.size + 1
+    )(code)
+  }
+
+  function notBlank(code) {
+    if (self.containerState.furtherBlankLines || !markdownSpace(code)) {
+      self.containerState.furtherBlankLines = self.containerState.initialBlankLine = undefined
+      return notInCurrentItem(code)
+    }
+
+    self.containerState.furtherBlankLines = self.containerState.initialBlankLine = undefined
+    return effects.attempt(indentConstruct, ok, notInCurrentItem)(code)
+  }
+
+  function notInCurrentItem(code) {
+    // While we do continue, we signal that the flow should be closed.
+    self.containerState._closeFlow = true
+    // As we’re closing flow, we’re no longer interrupting.
+    self.interrupt = undefined
+    return factorySpace(
+      effects,
+      effects.attempt(list, ok, nok),
+      types.linePrefix,
+      self.parser.constructs.disable.null.indexOf('codeIndented') > -1
+        ? undefined
+        : constants.tabSize
+    )(code)
+  }
+}
+
+function tokenizeIndent(effects, ok, nok) {
+  var self = this
+
+  return factorySpace(
+    effects,
+    afterPrefix,
+    types.listItemIndent,
+    self.containerState.size + 1
+  )
+
+  function afterPrefix(code) {
+    return prefixSize(self.events, types.listItemIndent) ===
+      self.containerState.size
+      ? ok(code)
+      : nok(code)
+  }
+}
+
+function tokenizeListEnd(effects) {
+  effects.exit(this.containerState.type)
+}
+
+function tokenizeListItemPrefixWhitespace(effects, ok, nok) {
+  var self = this
+
+  return factorySpace(
+    effects,
+    afterPrefix,
+    types.listItemPrefixWhitespace,
+    self.parser.constructs.disable.null.indexOf('codeIndented') > -1
+      ? undefined
+      : constants.tabSize + 1
+  )
+
+  function afterPrefix(code) {
+    return markdownSpace(code) ||
+      !prefixSize(self.events, types.listItemPrefixWhitespace)
+      ? nok(code)
+      : ok(code)
+  }
+}
+
+module.exports = list