From 86f31acf6789be116dcc54ed85b069a37c0f7aa8 Mon Sep 17 00:00:00 2001
From: Mel <einebeere@gmail.com>
Date: Thu, 11 Aug 2022 01:25:47 +0000
Subject: Actual modules and core

---
 pkg/lang/vm/exe.go | 62 ++++++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 62 insertions(+)
 create mode 100644 pkg/lang/vm/exe.go

(limited to 'pkg/lang/vm/exe.go')

diff --git a/pkg/lang/vm/exe.go b/pkg/lang/vm/exe.go
new file mode 100644
index 0000000..7d6fc61
--- /dev/null
+++ b/pkg/lang/vm/exe.go
@@ -0,0 +1,62 @@
+package vm
+
+import (
+	"jinx/pkg/lang/vm/mem"
+	"jinx/pkg/lang/vm/stack"
+	"jinx/pkg/lang/vm/value"
+)
+
+func (vm *VM) Mem() mem.Mem {
+	return vm.memory
+}
+
+func (vm *VM) Stack() stack.Stack {
+	return vm.stack
+}
+
+func (vm *VM) GetThis() (value.Value, error) {
+	err := vm.execGetEnv(0)
+	if err != nil {
+		return value.Value{}, err
+	}
+
+	// Take it back!
+	this, err := vm.popAndDrop()
+	if err != nil {
+		return value.Value{}, err
+	}
+
+	return this, nil
+}
+
+func (vm *VM) AddGlobal(name string, v value.Value) error {
+	globalPtr, err := vm.memory.Allocate(mem.CellKindGlobal)
+	if err != nil {
+		return err
+	}
+
+	globalCell := value.GlobalCell(v)
+	if err := vm.memory.Set(globalPtr, globalCell); err != nil {
+		return err
+	}
+
+	vm.globals[name] = globalPtr
+
+	return nil
+}
+
+func (vm *VM) GetGlobal(name string) (value.Value, bool, error) {
+	ptr, ok := vm.globals[name]
+	if !ok {
+		return value.Value{}, false, nil
+	}
+
+	cell, err := vm.getMemCell(ptr, mem.CellKindGlobal, false)
+	if err != nil {
+		return value.Value{}, false, err
+	}
+
+	v := cell.(value.GlobalCell).Get()
+
+	return v, true, nil
+}
-- 
cgit 1.4.1