[theme] super basic codegen

Makefile

@@ -18,9 +18,13 @@ test_bin = axtest
 all: ${test_bin}
 
 clean:
-	rm -rf ${test_bin}
+	rm -rf ${test_bin} _build
+
+gen:
+	mkdir -p _build
+	racket scripts/enum.rkt src _build
 
 ${test_bin}: ${srcs} ${hdrs}
 	${cc} ${cflags} ${srcs} -o ${test_bin}
 
-.PHONY: all clean
+.PHONY: all clean gen

scripts/enum.rkt

@@ -0,0 +1,82 @@
+#lang racket/base
+(require
+ racket/port
+ racket/path
+ racket/match
+ racket/stream)
+
+;; -----
+
+(struct desc [name vals-alist]
+  #:transparent)
+
+(define (make-desc name syms strs)
+  (desc name
+        (sort (map cons syms strs)
+              string<?
+              #:key cdr)))
+
+(define (read-desc port)
+  (match (read port)
+    [(? eof-object?) eof]
+    [`[,(? symbol? name)
+       (,(? symbol? syms)
+        ,(? string? strs))
+       ...]
+     (make-desc name syms strs)]
+    [s
+     (error (format "invalid enum description: ~s" s))]))
+
+(define (parser-file-name dsc)
+  (format "~a.parser.inc" (desc-name dsc)))
+
+(define (write-parser dsc [port (current-output-port)])
+  (match-define (desc name vals) dsc)
+  (for ([v+s (in-list vals)]
+        [i (in-naturals)])
+    (match-define (cons val str) v+s)
+    (when (> i 0)
+      (fprintf port "} else "))
+    (fprintf port "if (strcmp(str, ~s) == 0) {\n  val = ~a;\n"
+             str val))
+  (unless (null? vals)
+    (fprintf port "} else "))
+  (fprintf port "{\n  return 1;\n}\n"))
+
+;; -----
+
+(define (in-scan dir-path)
+  (for*/stream ([file-path (in-directory dir-path)]
+                #:when (equal? (path-get-extension file-path)
+                               #".enums")
+                [desc (in-port read-desc (open-input-file file-path))])
+    desc))
+
+(define (scan+gen scan-dir
+                  build-dir)
+  (for ([dsc (in-scan scan-dir)])
+    (write-parser dsc
+                  (open-output-file (build-path build-dir (parser-file-name dsc))
+                                    #:exists 'replace))))
+
+;; -----
+
+(module+ test
+  (define (display-parser dsc)
+    (for ([x (in-lines (open-input-string
+                        (with-output-to-string
+                          (λ () (write-parser dsc)))))])
+      (printf "; ~a\n" x)))
+
+  (display-parser (make-desc 'foobar
+                             '(BAR FOO FAR BOO)
+                             '("bar" "foo" "far" "boo")))
+
+  (displayln (make-string 80 #\-))
+
+  (display-parser (make-desc 'empty '() '())))
+
+(module+ main
+  (match (current-command-line-arguments)
+    [(vector src build)
+     (scan+gen src build)]))

src/ctxt/theme.c

@@ -47,8 +47,12 @@ void ax__theme_builder_finish(
 
 int ax__string_to_color_cat(const char* str, enum ax_color_cat* out_cat)
 {
-    // TODO: this
-    return 1;
+    enum ax_color_cat val;
+#include "../../_build/color.parser.inc"
+    if (out_cat != NULL) {
+        *out_cat = val;
+    }
+    return 0;
 }
 
 void ax__color_cat_to_string(enum ax_color_cat cat, const char** out_str)

src/ctxt/theme.enums

@@ -0,0 +1,11 @@
+[color (AX_COLOR_BACKGROUND    "background")
+       (AX_COLOR_SURFACE       "surface")
+       (AX_COLOR_PRIMARY       "primary")
+       (AX_COLOR_PRIMARY_ALT   "primary alt")
+       (AX_COLOR_SECONDARY     "secondary")
+       (AX_COLOR_SECONDARY_ALT "secondary alt")
+       (AX_COLOR_ON_BACKGROUND "on background")
+       (AX_COLOR_ON_SURFACE    "on surface")
+       (AX_COLOR_ON_PRIMARY    "on primary")
+       (AX_COLOR_ON_SECONDARY  "on secondary")
+       (AX_COLOR__DEFAULT      "default")]