From 483a64aa0c5ee8dc925b7957e39c42744b892288 Mon Sep 17 00:00:00 2001
From: Bad Diode <bd@badd10de.dev>
Date: Thu, 31 Mar 2022 08:18:36 +0200
Subject: Add type signature to def statements

Currently mandatory, may be optional once we have type inference.
---
 src/nodes.h | 45 +++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 45 insertions(+)
 create mode 100644 src/nodes.h

(limited to 'src/nodes.h')

diff --git a/src/nodes.h b/src/nodes.h
new file mode 100644
index 0000000..e6ceb50
--- /dev/null
+++ b/src/nodes.h
@@ -0,0 +1,45 @@
+#ifndef BDL_NODES_H
+#define BDL_NODES_H
+
+typedef enum NodeType {
+    NODE_BUILTIN,
+    NODE_NUMBER,
+    NODE_BOOL,
+    NODE_STRING,
+    NODE_SYMBOL,
+    NODE_DEF,
+} NodeType;
+
+typedef struct Node {
+    NodeType type;
+
+    union {
+        // Numbers.
+        struct {
+            bool negative;
+            size_t integral;
+            size_t fractional;
+        } number;
+
+        // String/symbol.
+        StringView string;
+
+        // Boolean.
+        bool boolean;
+
+        // Builtin primitive.
+        struct {
+            TokenType type;
+            struct Node **args;
+        } builtin;
+
+        // Variable definition.
+        struct {
+            struct Node *symbol;
+            struct Node *value;
+            StringView type;
+        } def;
+    };
+} Node;
+
+#endif // BDL_NODES_H
-- 
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