biblio: Replace template interpreter with a macro (a "compiler").

This allows us to catch invalid templates at macro-expansion time and is
more efficient.

* src/guile/skribilo/biblio/template.scm (evaluate-bib-entry-template):
Remove.
(define-template-engine, bibliography-template): New macros.
(output-bib-entry-template): Rewrite and remove 'get-field' optional
argument.
(make-bib-entry-template/default, make-bib-entry-template/skribe): Use
'bibliography-template' instead of quasiquote/unquote.
* src/guile/skribilo/package/jfp.scm (le): Likewise.
* src/guile/skribilo/package/lncs.scm (bib-entry-template): Likewise.
* src/guile/skribilo/biblio.scm (&biblio-template-error): Remove.
(handle-biblio-error): Adjust accordingly.
* tests/biblio.test: New file.
* tests/Makefile.am (TESTS): Add it.

2 files changed, 89 insertions, 0 deletions

diff --git a/tests/Makefile.am b/tests/Makefile.am
index 26b05ad..2ad1de2 100644
--- a/tests/Makefile.am
+++ b/tests/Makefile.am
@@ -11,6 +11,7 @@ TEST_LOG_DRIVER =							\
 
 TESTS =						\
   ast.test					\
+  biblio.test					\
   resolve.test					\
   engines/info.test				\
   location.test
diff --git a/tests/biblio.test b/tests/biblio.test
new file mode 100644
index 0000000..08a0239
--- /dev/null
+++ b/tests/biblio.test
@@ -0,0 +1,88 @@
+;;; Exercise the `biblio' routines.                  -*- Scheme -*-
+;;;
+;;; Copyright (C) 2022 Ludovic Courtès <ludo@gnu.org>
+;;;
+;;; This file is part of Skribilo.
+;;;
+;;; Skribilo is free software; you can redistribute it and/or modify it
+;;; under the terms of the GNU Lesser General Public License as published by
+;;; the Free Software Foundation; either version 3 of the License, or (at
+;;; your option) any later version.
+;;;
+;;; Skribilo is distributed in the hope that it will be useful, but
+;;; WITHOUT ANY WARRANTY; without even the implied warranty of
+;;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU Lesser
+;;; General Public License for more details.
+;;;
+;;; You should have received a copy of the GNU Lesser General Public License
+;;; along with this program.  If not, see <http://www.gnu.org/licenses/>.
+
+(define-module (tests biblio)
+  #:use-module ((skribilo reader) #:select (*document-reader*))
+  #:use-module (skribilo ast)
+  #:use-module (skribilo biblio)
+  #:use-module (skribilo biblio template)
+  #:use-module (srfi srfi-64))
+
+(define sbib
+  '(article
+    scheme:r5rs
+    (title "The Revised5 Report on the Algorithmic Language Scheme")
+    (author "Richard Kelsey, William D. Clinger, Jonathan Rees")
+    (journal "Higher-Order and Symbolic Computation")
+    (volume "11")
+    (number "1")
+    (month "Sep")
+    (year "1998")
+    (url "https://www.gnu.org/software/guile/manual/r5rs.html")))
+
+(define table
+  (make-bib-table 'table))
+
+
+(test-begin "biblio")
+
+(test-equal "parse-bib"
+  "The Revised5 Report on the Algorithmic Language Scheme"
+  (begin
+    (call-with-input-string (object->string sbib)
+      (lambda (port)
+        (parameterize ((*document-reader* read))
+          (parse-bib table port))))
+    (and (bib-table? table)
+         (let ((entry (resolve-bib table 'scheme:r5rs)))
+           (and (is-markup? entry '&bib-entry)
+                (markup-body (markup-option entry 'title)))))))
+
+(test-equal "bibliography-template: simple"
+  (let ((entry (resolve-bib table 'scheme:r5rs)))
+    (list "A: " (markup-option entry 'author)
+          "T: " (markup-option entry 'title)
+          "Y: " (markup-option entry 'year)))
+  (let ((template (bibliography-template "A: " author
+                                         "T: " title
+                                         "Y: " year)))
+    (template (resolve-bib table 'scheme:r5rs))))
+
+(test-equal "bibliography-template: conditionals"
+  (let ((entry (resolve-bib table 'scheme:r5rs)))
+    (list "A: " (markup-option entry 'author)
+          "T: " (markup-option entry 'title)
+          "Y: " (list (markup-option entry 'year))
+          "B: " '("no")))
+  (let ((template (bibliography-template "A: " (or editor author)
+                                         "T: " (or booktitle title)
+                                         "Y: " (if year year "N")
+                                         "B: " (if booktitle "yes" "no"))))
+    (template (resolve-bib table 'scheme:r5rs))))
+
+(test-equal "bibliography-template: tricky things"
+  (let ((entry (resolve-bib table 'scheme:r5rs)))
+    (list "A: " (markup-option entry 'author)
+          "Y: " (markup-option entry 'year) "!"))
+  (let ((template (bibliography-template ("A: " author)
+                                         ("T: " booktitle "+" title)
+                                         ("Y: " year "!"))))
+    (template (resolve-bib table 'scheme:r5rs))))
+
+(test-end "biblio")