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2022-09-20read-print: Correctly support multiple same-named newline forms.Ludovic Courtès
Previously (home-environment (services ...)) would not be considered a "newline form". This fixes it. * guix/read-print.scm (newline-form?): Use 'vhash-foldq*' instead of 'vhash-assq' and iterate over candidates. * tests/read-print.scm: Add test.
2022-09-02read-print: Define forms for which \n, \t, etc. are not escaped.Ludovic Courtès
Previously, the pretty-printer would unconditionally leave everything but double-quotes and backslashes unescaped when rendering a string. With this change, the previous behavior only applies to forms listed in %NATURAL-WHITESPACE-STRING-FORMS. * guix/read-print.scm (%natural-whitespace-string-forms): New variable. (printed-string): New procedure. (pretty-print-with-comments): Use it instead of 'escaped-string'. * tests/read-print.scm: Add test.
2022-09-01read-print: Guess the base to use for integers being printed.Ludovic Courtès
Fixes <https://issues.guix.gnu.org/57090>. Reported by Christopher Rodriguez <yewscion@gmail.com>. * guix/read-print.scm (%symbols-followed-by-octal-integers) (%symbols-followed-by-hexadecimal-integers): New variables. * guix/read-print.scm (integer->string): New procedure. (pretty-print-with-comments): Use it. * tests/read-print.scm: Add test.
2022-08-10read-print: Report missing closing parens instead of looping.Ludovic Courtès
Fixes <https://issues.guix.gnu.org/57093>. Reported by Mohammed AMAR-BENSABER <renken@shione.net>. Previously 'read-with-comments' would enter an infinite loop. * guix/read-print.scm (read-with-comments)[missing-closing-paren-error]: New procedure. Call it when 'loop' as called from 'liip' returns EOF. * tests/read-print.scm ("read-with-comments: missing closing paren"): New test.
2022-08-08read-print: Add 'case' and 'cond' special forms.Ludovic Courtès
* guix/read-print.scm (%special-forms): Add 'case' and 'cond'. * tests/read-print.scm: Add tests.
2022-08-08read-print: Support printing multi-line comments.Ludovic Courtès
* guix/read-print.scm (%not-newline): New variable. (print-multi-line-comment): New procedure. (pretty-print-with-comments): Use it. * tests/read-print.scm ("pretty-print-with-comments, multi-line comment"): New test.
2022-08-08read-print: 'canonicalize-comment' leaves top-level comments unchanged.Ludovic Courtès
This lets users use three leading semicolons, for instance, in top-level comments. * guix/read-print.scm (canonicalize-comment): Add INDENT parameter and honor it. (pretty-print-with-comments): Change default value of #:format-comment. Call FORMAT-COMMENT with INDENT as the second argument. * tests/read-print.scm: Adjust test accordingly.
2022-08-08read-print: Add code to read and write sequences of expressions/blanks.Ludovic Courtès
* guix/read-print.scm (read-with-comments): Add #:blank-line? and honor it. (read-with-comments/sequence, pretty-print-with-comments/splice): New procedures. * tests/read-print.scm (test-pretty-print/sequence): New macro. Add tests using it.
2022-08-08read-print: Recognize page breaks.Ludovic Courtès
* guix/read-print.scm (<page-break>, page-break?, page-break) (char-set:whitespace-sans-page-break): New variables. (space?): New procedure. (read-vertical-space): Use it. (read-until-end-of-line): New procedure. (read-with-comments): Add #\page case. (pretty-print-with-comments): Add 'page-break?' case. * tests/read-print.scm ("read-with-comments: top-level page break"): New test. Add round-trip test with page break within an sexp.
2022-08-08read-print: Read and render vertical space.Ludovic Courtès
* guix/read-print.scm (<vertical-space>, vertical-space?) (vertical-space, vertical-space-height): New variables. (combine-vertical-space, canonicalize-vertical-space) (read-vertical-space): New procedures. (read-with-comments): Use it in the #\newline case. (pretty-print-with-comments): Add #:format-vertical-space and honor it. Add case for 'vertical-space?'. * guix/scripts/style.scm (format-package-definition): Pass #:format-vertical-space to 'object->string*'. * tests/read-print.scm ("read-with-comments: list with blank line") ("read-with-comments: list with multiple blank lines") ("read-with-comments: top-level blank lines") ("pretty-print-with-comments, canonicalize-vertical-space"): New tests. Add a couple of additional round-trip tests.
2022-08-08style: Move reader and printer to (guix read-print).Ludovic Courtès
* guix/scripts/style.scm (<comment>, read-with-comments) (vhashq, %special-forms, %newline-forms, prefix?) (special-form-lead, newline-form?, escaped-string) (string-width, canonicalize-comment, pretty-print-with-comments) (object->string*): Move to... * guix/read-print.scm: ... here. New file. * guix/scripts/import.scm: Adjust accordingly. * tests/style.scm: Move 'test-pretty-print' and tests to... * tests/read-print.scm: ... here. New file. * Makefile.am (MODULES): Add 'guix/read-print.scm'. (SCM_TESTS): Add 'tests/read-print.scm'.