From fcf9a13fa13f417f574df28e55380d955e4b5639 Mon Sep 17 00:00:00 2001
From: Maxwell Jeffress <maxwelljeffress@proton.me>
Date: Sat, 11 Apr 2026 12:18:57 +1000
Subject: [PATCH] groundAddFunctionToStruct interface

---
 include/groundext.h |  1 +
 src/interface.c     | 21 +++++++++++++++++++++
 2 files changed, 22 insertions(+)

diff --git a/include/groundext.h b/include/groundext.h
index d3c76b5..6684de5 100644
--- a/include/groundext.h
+++ b/include/groundext.h
@@ -38,6 +38,7 @@ typedef GroundValue (*NativeGroundFunction)(GroundScope* scope, List args);
  * ...: A sequence of (GroundValueType type, char* name) for each argument.
  */
 void groundAddNativeFunction(GroundScope* scope, char* name, NativeGroundFunction fn, GroundValueType returnType, int argCount, ...);
+void groundAddFunctionToStruct(GroundStruct* gstruct, char* name, NativeGroundFunction fn, GroundValueType returnType, int argCount, ...);
 
 #ifdef __cplusplus
 }
diff --git a/src/interface.c b/src/interface.c
index 26afaef..4cef8d8 100644
--- a/src/interface.c
+++ b/src/interface.c
@@ -151,6 +151,27 @@ void groundAddValueToScope(GroundScope* gs, const char* name, GroundValue value)
 void groundAddFieldToStruct(GroundStruct* gstruct, char* name, GroundValue field) {
     addFieldToStruct(gstruct, name, field);
 }
+GroundFunction* createGroundFunction();
+void addArgsToGroundFunction(GroundFunction* function, GroundValueType type, char* name);
+
+void groundAddFunctionToStruct(GroundStruct* gstruct, char* name, NativeGroundFunction fn, GroundValueType returnType, int argCount, ...) {
+    GroundFunction* gf = createGroundFunction();
+    gf->isNative = true;
+    gf->nativeFn = fn;
+    gf->returnType = returnType;
+
+    va_list args;
+    va_start(args, argCount);
+    for(int i = 0; i < argCount; i++) {
+        GroundValueType type = va_arg(args, GroundValueType);
+        char* argName = va_arg(args, char*);
+        addArgsToGroundFunction(gf, type, argName);
+    }
+    va_end(args);
+
+    GroundValue gv = createFunctionGroundValue(gf);
+    addFieldToStruct(gstruct, name, gv);
+}
 
 void groundCompileProgram(GroundProgram* program) {
     compileGroundProgram(program, "program.gexe");