core/model: add var_alloc & array_var_alloc

nac3core/src/codegen/model/core.rs

@@ -1,10 +1,10 @@
 use inkwell::{
     context::Context,
     types::{AnyTypeEnum, BasicTypeEnum},
-    values::{AnyValue, AnyValueEnum, BasicValueEnum},
+    values::{AnyValue, AnyValueEnum, BasicValueEnum, PointerValue},
 };
 
-use crate::codegen::CodeGenContext;
+use crate::codegen::{CodeGenContext, CodeGenerator};
 
 use super::{slice::ArraySlice, Int, Pointer};
 
@@ -89,4 +89,30 @@ pub trait Model<'ctx>: Clone + Copy + CanCheckLLVMType<'ctx> + Sized {
             },
         }
     }
+
+    /// Do [`CodeGenerator::gen_var_alloc`] with the LLVM type of this [`Model<'ctx>`].
+    fn var_alloc<G: CodeGenerator + ?Sized>(
+        &self,
+        generator: &mut G,
+        ctx: &mut CodeGenContext<'ctx, '_>,
+        name: Option<&str>,
+    ) -> Result<Pointer<'ctx, Self>, String> {
+        let value = generator.gen_var_alloc(ctx, self.get_llvm_type(ctx.ctx), name)?;
+        Ok(Pointer { element: *self, value })
+    }
+
+    /// Do [`CodeGenerator::gen_array_var_alloc`] with the LLVM type of this [`Model<'ctx>`].
+    fn array_var_alloc<G: CodeGenerator + ?Sized>(
+        &self,
+        generator: &mut G,
+        ctx: &mut CodeGenContext<'ctx, '_>,
+        size: Int<'ctx>,
+        name: Option<&'ctx str>,
+    ) -> Result<Pointer<'ctx, Self>, String> {
+        let slice =
+            generator.gen_array_var_alloc(ctx, self.get_llvm_type(ctx.ctx), size.0, name)?;
+        let ptr = PointerValue::from(slice); // TODO: Remove ArraySliceValue
+
+        Ok(Pointer { element: *self, value: ptr })
+    }
 }