parser: Get started on type system

Signed-off-by: Quinn Stephens <quinn@osmora.org>

1 files changed, 52 insertions, 0 deletions

diff --git a/src/parser/types.c b/src/parser/types.c
new file mode 100644
index 0000000..ba0c256
--- /dev/null
+++ b/src/parser/types.c
@@ -0,0 +1,52 @@
+/*
+ * Copyright (c) 2025 Quinn Stephens and the OSMORA team.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright notice,
+ *    this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright notice,
+ *    this list of conditions and the following disclaimer in the documentation
+ *    and/or other materials provided with the distribution.
+ * 3. Neither the name of the copyright holder nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS “AS IS”
+ * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
+ * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+ * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+ * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#include "log.h"
+#include "parser/types.h"
+
+#define BUILTIN_TYPE_COUNT 2
+
+static struct type builtin_types[BUILTIN_TYPE_COUNT] = {
+    { .kind = TYK_BUILTIN, .name = "void", .size = 0 },
+    { .kind = TYK_BUILTIN, .name = "int" , .size = 4 }
+};
+
+struct type *
+types_find_builtin(enum token_kind tok_kind)
+{
+    int idx;
+
+    idx = tok_kind - TOK_VOID;
+    if (idx < 0 || idx >= BUILTIN_TYPE_COUNT) {
+        log_error("token kind does not match any builtin type\n");
+        return NULL;
+    }
+
+    return &builtin_types[idx];
+}