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author | Florian Dold <florian.dold@gmail.com> | 2017-08-14 05:01:11 +0200 |
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committer | Florian Dold <florian.dold@gmail.com> | 2017-08-14 05:02:09 +0200 |
commit | 363723fc84f7b8477592e0105aeb331ec9a017af (patch) | |
tree | 29f92724f34131bac64d6a318dd7e30612e631c7 /node_modules/acorn/src/state.js | |
parent | 5634e77ad96bfe1818f6b6ee70b7379652e5487f (diff) |
node_modules
Diffstat (limited to 'node_modules/acorn/src/state.js')
-rw-r--r-- | node_modules/acorn/src/state.js | 115 |
1 files changed, 0 insertions, 115 deletions
diff --git a/node_modules/acorn/src/state.js b/node_modules/acorn/src/state.js deleted file mode 100644 index 5d9ae7501..000000000 --- a/node_modules/acorn/src/state.js +++ /dev/null @@ -1,115 +0,0 @@ -import {reservedWords, keywords} from "./identifier" -import {types as tt} from "./tokentype" -import {lineBreak} from "./whitespace" -import {getOptions} from "./options" - -// Registered plugins -export const plugins = {} - -function keywordRegexp(words) { - return new RegExp("^(" + words.replace(/ /g, "|") + ")$") -} - -export class Parser { - constructor(options, input, startPos) { - this.options = options = getOptions(options) - this.sourceFile = options.sourceFile - this.keywords = keywordRegexp(keywords[options.ecmaVersion >= 6 ? 6 : 5]) - let reserved = "" - if (!options.allowReserved) { - for (let v = options.ecmaVersion;; v--) - if (reserved = reservedWords[v]) break - if (options.sourceType == "module") reserved += " await" - } - this.reservedWords = keywordRegexp(reserved) - let reservedStrict = (reserved ? reserved + " " : "") + reservedWords.strict - this.reservedWordsStrict = keywordRegexp(reservedStrict) - this.reservedWordsStrictBind = keywordRegexp(reservedStrict + " " + reservedWords.strictBind) - this.input = String(input) - - // Used to signal to callers of `readWord1` whether the word - // contained any escape sequences. This is needed because words with - // escape sequences must not be interpreted as keywords. - this.containsEsc = false - - // Load plugins - this.loadPlugins(options.plugins) - - // Set up token state - - // The current position of the tokenizer in the input. - if (startPos) { - this.pos = startPos - this.lineStart = this.input.lastIndexOf("\n", startPos - 1) + 1 - this.curLine = this.input.slice(0, this.lineStart).split(lineBreak).length - } else { - this.pos = this.lineStart = 0 - this.curLine = 1 - } - - // Properties of the current token: - // Its type - this.type = tt.eof - // For tokens that include more information than their type, the value - this.value = null - // Its start and end offset - this.start = this.end = this.pos - // And, if locations are used, the {line, column} object - // corresponding to those offsets - this.startLoc = this.endLoc = this.curPosition() - - // Position information for the previous token - this.lastTokEndLoc = this.lastTokStartLoc = null - this.lastTokStart = this.lastTokEnd = this.pos - - // The context stack is used to superficially track syntactic - // context to predict whether a regular expression is allowed in a - // given position. - this.context = this.initialContext() - this.exprAllowed = true - - // Figure out if it's a module code. - this.inModule = options.sourceType === "module" - this.strict = this.inModule || this.strictDirective(this.pos) - - // Used to signify the start of a potential arrow function - this.potentialArrowAt = -1 - - // Flags to track whether we are in a function, a generator, an async function. - this.inFunction = this.inGenerator = this.inAsync = false - // Positions to delayed-check that yield/await does not exist in default parameters. - this.yieldPos = this.awaitPos = 0 - // Labels in scope. - this.labels = [] - - // If enabled, skip leading hashbang line. - if (this.pos === 0 && options.allowHashBang && this.input.slice(0, 2) === "#!") - this.skipLineComment(2) - - // Scope tracking for duplicate variable names (see scope.js) - this.scopeStack = [] - this.enterFunctionScope() - } - - // DEPRECATED Kept for backwards compatibility until 3.0 in case a plugin uses them - isKeyword(word) { return this.keywords.test(word) } - isReservedWord(word) { return this.reservedWords.test(word) } - - extend(name, f) { - this[name] = f(this[name]) - } - - loadPlugins(pluginConfigs) { - for (let name in pluginConfigs) { - let plugin = plugins[name] - if (!plugin) throw new Error("Plugin '" + name + "' not found") - plugin(this, pluginConfigs[name]) - } - } - - parse() { - let node = this.options.program || this.startNode() - this.nextToken() - return this.parseTopLevel(node) - } -} |