Import OCC sources to OSMORA.ORG

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

1 files changed, 98 insertions, 0 deletions

diff --git a/src/lexer/keywords.c b/src/lexer/keywords.c
new file mode 100644
index 0000000..7bb6b47
--- /dev/null
+++ b/src/lexer/keywords.c
@@ -0,0 +1,98 @@
+/*
+ * 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 <stdbool.h>
+#include <stddef.h>
+#include <string.h>
+#include "hash.h"
+#include "lexer/keywords.h"
+#include "log.h"
+
+#define KEYWORD_COUNT 1
+
+#define KEYWORD_MAP_ROWS 16
+
+static struct list map_rows[KEYWORD_MAP_ROWS];
+static struct hashmap map;
+
+static struct {
+    const char *str;
+    enum token_kind value;
+} info[KEYWORD_COUNT] = {
+    { "void", TK_VOID }
+};
+
+static void
+add_keyword(const char *str, enum token_kind value)
+{
+    struct keyword *kwd;
+
+    kwd = malloc(sizeof(struct keyword));
+    if (kwd == NULL) {
+        log_error("Failed to allocate memory for keyword \"%s\"\n", str);
+        return;
+    }
+
+    kwd->len = strlen(str);
+    kwd->value = value;
+
+    kwd->hashmap_entry.hash = hash(str, kwd->len);
+    hashmap_add(map, &kwd->hashmap_entry);
+}
+
+struct keyword *
+keywords_find(struct token *tok)
+{
+    struct keyword *kwd;
+
+    kwd = (struct keyword *)hashmap_find(map, tok->hash);
+
+    /* Check that the lengths match just in case */
+    if (kwd != NULL && kwd->len == tok->len) {
+        return kwd;
+    }
+
+    return NULL;
+}
+
+void
+keywords_init(void)
+{
+    log_debug("Initializing keywords...\n");
+
+    /* Intiailize hashmap */
+    map.rows = map_rows;
+    map.row_count = KEYWORD_MAP_ROWS;
+    hashmap_init(map);
+
+    /* Register all keywords */
+    for (int k = 0; k < KEYWORD_COUNT; k++) {
+        add_keyword(info[k].str, info[k].value);
+    }
+}