1 files changed, 110 insertions, 0 deletions
diff --git a/tools/node_modules/eslint/node_modules/acorn-jsx/node_modules/acorn/src/tokencontext.js b/tools/node_modules/eslint/node_modules/acorn-jsx/node_modules/acorn/src/tokencontext.js
new file mode 100644
index 0000000000..911a51563d
--- /dev/null
+++ b/tools/node_modules/eslint/node_modules/acorn-jsx/node_modules/acorn/src/tokencontext.js
@@ -0,0 +1,110 @@
+// The algorithm used to determine whether a regexp can appear at a
+// given point in the program is loosely based on sweet.js' approach.
+// See https://github.com/mozilla/sweet.js/wiki/design
+
+import {Parser} from "./state"
+import {types as tt} from "./tokentype"
+import {lineBreak} from "./whitespace"
+
+export class TokContext {
+  constructor(token, isExpr, preserveSpace, override) {
+    this.token = token
+    this.isExpr = !!isExpr
+    this.preserveSpace = !!preserveSpace
+    this.override = override
+  }
+}
+
+export const types = {
+  b_stat: new TokContext("{", false),
+  b_expr: new TokContext("{", true),
+  b_tmpl: new TokContext("${", true),
+  p_stat: new TokContext("(", false),
+  p_expr: new TokContext("(", true),
+  q_tmpl: new TokContext("`", true, true, p => p.readTmplToken()),
+  f_expr: new TokContext("function", true)
+}
+
+const pp = Parser.prototype
+
+pp.initialContext = function() {
+  return [types.b_stat]
+}
+
+pp.braceIsBlock = function(prevType) {
+  if (prevType === tt.colon) {
+    let parent = this.curContext()
+    if (parent === types.b_stat || parent === types.b_expr)
+      return !parent.isExpr
+  }
+  if (prevType === tt._return)
+    return lineBreak.test(this.input.slice(this.lastTokEnd, this.start))
+  if (prevType === tt._else || prevType === tt.semi || prevType === tt.eof || prevType === tt.parenR)
+    return true
+  if (prevType == tt.braceL)
+    return this.curContext() === types.b_stat
+  return !this.exprAllowed
+}
+
+pp.updateContext = function(prevType) {
+  let update, type = this.type
+  if (type.keyword && prevType == tt.dot)
+    this.exprAllowed = false
+  else if (update = type.updateContext)
+    update.call(this, prevType)
+  else
+    this.exprAllowed = type.beforeExpr
+}
+
+// Token-specific context update code
+
+tt.parenR.updateContext = tt.braceR.updateContext = function() {
+  if (this.context.length == 1) {
+    this.exprAllowed = true
+    return
+  }
+  let out = this.context.pop()
+  if (out === types.b_stat && this.curContext() === types.f_expr) {
+    this.context.pop()
+    this.exprAllowed = false
+  } else if (out === types.b_tmpl) {
+    this.exprAllowed = true
+  } else {
+    this.exprAllowed = !out.isExpr
+  }
+}
+
+tt.braceL.updateContext = function(prevType) {
+  this.context.push(this.braceIsBlock(prevType) ? types.b_stat : types.b_expr)
+  this.exprAllowed = true
+}
+
+tt.dollarBraceL.updateContext = function() {
+  this.context.push(types.b_tmpl)
+  this.exprAllowed = true
+}
+
+tt.parenL.updateContext = function(prevType) {
+  let statementParens = prevType === tt._if || prevType === tt._for || prevType === tt._with || prevType === tt._while
+  this.context.push(statementParens ? types.p_stat : types.p_expr)
+  this.exprAllowed = true
+}
+
+tt.incDec.updateContext = function() {
+  // tokExprAllowed stays unchanged
+}
+
+tt._function.updateContext = function(prevType) {
+  if (prevType.beforeExpr && prevType !== tt.semi && prevType !== tt._else &&
+      !((prevType === tt.colon || prevType === tt.braceL) && this.curContext() === types.b_stat))
+    this.context.push(types.f_expr)
+  this.exprAllowed = false
+}
+
+tt.backQuote.updateContext = function() {
+  if (this.curContext() === types.q_tmpl)
+    this.context.pop()
+  else
+    this.context.push(types.q_tmpl)
+  this.exprAllowed = false
+}