1 files changed, 65 insertions, 0 deletions
diff --git a/src_c/builtin.c b/src_c/builtin.c
new file mode 100644
index 0000000..92e1fa8
--- /dev/null
+++ b/src_c/builtin.c
@@ -0,0 +1,65 @@
+#include "builtin.h"
+
+
+lsp_status_t lsp_builtin_get_args_1(lsp_mem_t *m, lsp_addr_t args,
+                                    lsp_addr_t *arg1) {
+    if (args == m->nil)
+        return LSP_ERR_ARG_COUNT;
+
+    *arg1 = lsp_mem_get_pair_first(m, args);
+
+    args = lsp_mem_get_pair_second(m, args);
+    if (args != m->nil)
+        return LSP_ERR_ARG_COUNT;
+
+    return LSP_SUCCESS;
+}
+
+
+lsp_status_t lsp_builtin_get_args_2(lsp_mem_t *m, lsp_addr_t args,
+                                    lsp_addr_t *arg1, lsp_addr_t *arg2) {
+    if (args == m->nil)
+        return LSP_ERR_ARG_COUNT;
+
+    *arg1 = lsp_mem_get_pair_first(m, args);
+
+    args = lsp_mem_get_pair_second(m, args);
+    if (args == m->nil)
+        return LSP_ERR_ARG_COUNT;
+
+    *arg2 = lsp_mem_get_pair_first(m, args);
+
+    args = lsp_mem_get_pair_second(m, args);
+    if (args != m->nil)
+        return LSP_ERR_ARG_COUNT;
+
+    return LSP_SUCCESS;
+}
+
+
+lsp_status_t lsp_builtin_get_args_3(lsp_mem_t *m, lsp_addr_t args,
+                                    lsp_addr_t *arg1, lsp_addr_t *arg2,
+                                    lsp_addr_t *arg3) {
+    if (args == m->nil)
+        return LSP_ERR_ARG_COUNT;
+
+    *arg1 = lsp_mem_get_pair_first(m, args);
+
+    args = lsp_mem_get_pair_second(m, args);
+    if (args == m->nil)
+        return LSP_ERR_ARG_COUNT;
+
+    *arg2 = lsp_mem_get_pair_first(m, args);
+
+    args = lsp_mem_get_pair_second(m, args);
+    if (args == m->nil)
+        return LSP_ERR_ARG_COUNT;
+
+    *arg3 = lsp_mem_get_pair_first(m, args);
+
+    args = lsp_mem_get_pair_second(m, args);
+    if (args != m->nil)
+        return LSP_ERR_ARG_COUNT;
+
+    return LSP_SUCCESS;
+}