2 Commits (ccda4c7115b99b1f9a107f211b4af1756de5d9c8)

Author	SHA1	Message	Date
Joseph Frazier	c863cbeac8	Translate cursor relative to nearest node, not SourceElement (#1989) ... * Add test demonstrating SourceElement-relative cursor translation See https://github.com/prettier/prettier/issues/1981#issuecomment-306326739 * Translate cursor relative to nearest node, not SourceElement This partially address https://github.com/prettier/prettier/issues/1981 See https://github.com/prettier/prettier/issues/1981#issuecomment-306326739 * Add test demonstrating incorrect cursor translation Since the `cursorOffset` option (introduced in #1637) works by tracking the cursor position relative to an AST node (rather than a CST token), it can produce incorrect results. See https://github.com/prettier/prettier/issues/1981	2017-06-05 18:51:53 -07:00
Joseph Frazier	4bfeb9064d	Add `cursorOffset` option for cursor translation (#1637) ... * Add `formatWithCursor` API with `cursorOffset` option This addresses https://github.com/prettier/prettier/issues/93 by adding a new option, `cursorOffset`, that tells prettier to determine the location of the cursor after the code has been formatted. This is accessible through the API via a new function, `formatWithCursor`, which returns a `{formatted: string, cursorOffset: ?number}`. Here's a usage example: ```js require("prettier").formatWithCursor(" 1", { cursorOffset: 2 }); // -> { formatted: '1;\n', cursorOffset: 1 } ``` * Add `--cursor-offset` CLI option It will print out the offset instead of the formatted output. This makes it easier to test. For example: echo ' 1' | prettier --stdin --cursor-offset 2 # prints 1 * Add basic test of cursor translation * Document `cursorOffset` option and `formatWithCursor()` * Print translated cursor offset to stderr when --cursor-offset is given This lets us continue to print the formatted code, while also communicating the updated cursor position. See https://github.com/prettier/prettier/pull/1637#discussion_r119735496 * doc-print cursor placeholder in comments.printComments() See https://github.com/prettier/prettier/pull/1637#discussion_r119735149 * Compare array index to -1 instead of >= 0 to determine element presence See https://github.com/prettier/prettier/pull/1637#discussion_r119736623 * Return {formatted, cursor} from printDocToString() instead of mutating options See https://github.com/prettier/prettier/pull/1637#discussion_r119737354	2017-06-01 15:52:29 -07:00