Move parser to separate library

1 files changed, 202 insertions, 0 deletions

diff --git a/libstorycode/storycode.y b/libstorycode/storycode.y
new file mode 100644
index 0000000..625f080
--- /dev/null
+++ b/libstorycode/storycode.y
@@ -0,0 +1,202 @@
+/*
+ * storycode.y
+ *
+ * Copyright © 2019 Thomas White <taw@bitwiz.org.uk>
+ *
+ * This file is part of Colloquium.
+ *
+ * Colloquium is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program 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 General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ *
+ */
+
+%{
+  extern int sclex();
+  extern int scparse();
+  void scerror(const char *s);
+%}
+
+%define api.value.type {char *}
+%define api.token.prefix {SC_}
+%token STYLES SLIDE
+%token NARRATIVE
+%token PRESTITLE
+%token SLIDETITLE
+%token FOOTER
+%token TEXTFRAME
+%token IMAGEFRAME
+%token BP
+
+%token FONT TYPE PAD ALIGN FGCOL BGCOL
+
+%token LEFT CENTER RIGHT
+
+%token STRING
+%token OPENBRACE CLOSEBRACE
+%token SQOPEN SQCLOSE
+%token PLUS TIMES
+%token UNIT VALUE
+
+%%
+
+presentation:
+  stylesheet narrative
+| narrative
+;
+
+narrative:
+  narrative_el
+| narrative narrative_el
+;
+
+narrative_el:
+  prestitle   { printf("prestitle: '%s'\n", $1); }
+| bulletpoint { printf("* '%s'\n", $1); }
+| slide
+| STRING   { printf("Text line '%s'\n", $1); }
+;
+
+/* Can be in narrative or slide */
+
+prestitle:
+  PRESTITLE STRING { $$ = $2; }
+;
+
+bulletpoint:
+ BP STRING { $$ = $2; }
+;
+
+
+/* ------ Slide contents ------ */
+
+slide:
+  SLIDE OPENBRACE { printf("start of slide\n"); }
+   slide_parts
+  CLOSEBRACE { printf("end of slide\n"); }
+;
+
+slide_parts:
+  %empty
+| slide_parts slide_part
+;
+
+slide_part:
+  prestitle
+| imageframe
+| textframe
+| FOOTER
+| slidetitle
+;
+
+imageframe:
+  IMAGEFRAME frame_options STRING { printf("image frame '%s'\n", $STRING); }
+;
+
+textframe:
+  TEXTFRAME frame_options multi_line_string { printf("text frame '%s'\n", $3); }
+| TEXTFRAME frame_options OPENBRACE multi_line_string CLOSEBRACE { printf("text frame m\n"); }
+
+multi_line_string:
+  STRING { printf("string '%s'\n", $1); }
+| multi_line_string STRING { printf("more string '%s'\n", $2); }
+| bulletpoint { printf("string *%s\n", $1); }
+| multi_line_string bulletpoint { printf("more string *%s\n", $1); }
+;
+
+/* There can be any number of options */
+frame_options:
+  %empty
+| frame_options frame_option
+;
+
+/* Each option is enclosed in square brackets */
+frame_option:
+  SQOPEN frameopt SQCLOSE { printf("got an option: '%s'\n", $2); }
+;
+
+frameopt:
+  geometry
+| alignment
+;
+
+geometry:
+  length TIMES length PLUS length PLUS length { $$ = "geom"; printf("Geometry\n"); }
+;
+
+alignment:
+  LEFT
+| CENTER
+| RIGHT
+;
+
+slidetitle:
+  SLIDETITLE STRING { $$ = $2; }
+;
+
+length:
+  VALUE UNIT
+;
+
+
+/* ------ Stylesheet ------ */
+
+stylesheet:
+  STYLES OPENBRACE { printf("Here comes the stylesheet\n"); }
+   style_narrative       { printf("Stylesheet - narrative\n"); }
+   style_slide           { printf("Stylesheet - slide\n"); }
+  CLOSEBRACE
+;
+
+style_narrative:
+  NARRATIVE OPENBRACE style_narrative_def CLOSEBRACE { printf("narrative style\n"); }
+;
+
+style_narrative_def:
+  %empty
+| style_narrative_def style_prestitle
+| style_narrative_def styledef
+;
+
+style_slide:
+  SLIDE OPENBRACE style_slide_def CLOSEBRACE { printf("slide style\n"); }
+;
+
+style_slide_def:
+  %empty
+| style_slide_def style_prestitle
+| style_slide_def styledef
+;
+
+style_prestitle:
+  PRESTITLE OPENBRACE styledefs CLOSEBRACE { printf("prestitle style\n"); }
+;
+
+styledefs:
+  %empty
+| styledefs styledef
+;
+
+styledef:
+  FONT STRING  { printf("font def: '%s'\n", $2); }
+| TYPE STRING  { printf("type def: '%s'\n", $2); }
+| PAD STRING   { printf("pad def: '%s'\n", $2); }
+| FGCOL STRING { printf("fgcol def: '%s'\n", $2); }
+| BGCOL STRING { printf("bgcol def: '%s'\n", $2); }
+| ALIGN STRING { printf("align def: '%s'\n", $2); }
+;
+
+%%
+
+void scerror(const char *s) {
+	printf("Error\n");
+}