initial commit of untested function stuff

functions.go

@@ -0,0 +1,35 @@
+package go_llm
+
+import (
+	"context"
+	"gitea.stevedudenhoeffer.com/steve/go-llm/schema"
+	"reflect"
+)
+
+// Parse takes a function pointer and returns a function object.
+// fn must be a pointer to a function that takes a context.Context as its first argument, and then a struct that contains
+// the parameters for the function.  The struct must contain only the types: string, int, float64, bool, and pointers to
+// those types.
+// The struct parameters can have the following tags:
+// - Description: a string that describes the parameter, passed to openaiImpl to tell it what the parameter is for
+
+func NewFunction[T any](name string, description string, fn func(context.Context, T) (string, error)) *Function {
+	var o T
+
+	res := Function{
+		Name:        name,
+		Description: description,
+		Parameters:  schema.GetType(o),
+		fn:          reflect.ValueOf(fn),
+		paramType:   reflect.TypeOf(o),
+	}
+
+	if res.fn.Kind() != reflect.Func {
+		panic("fn must be a function")
+	}
+	if res.paramType.Kind() != reflect.Struct {
+		panic("function parameter must be a struct")
+	}
+
+	return &res
+}