From e94e30eafc735a36c1fddeee4f8422a132eecd33 Mon Sep 17 00:00:00 2001
From: Andrew Morris <voltrevo@gmail.com>
Date: Wed, 11 May 2022 09:25:29 +1000
Subject: [PATCH] Compile this expressions

---
 src/vstc/compile.rs | 16 +++++++++++++---
 1 file changed, 13 insertions(+), 3 deletions(-)

diff --git a/src/vstc/compile.rs b/src/vstc/compile.rs
index 14ba807..ba79bdf 100644
--- a/src/vstc/compile.rs
+++ b/src/vstc/compile.rs
@@ -273,7 +273,9 @@ impl<'a> ExpressionCompiler<'a> {
     use swc_ecma_ast::Expr::*;
 
     match expr {
-      This(_) => std::panic!("Not implemented: This expression"),
+      This(_) => {
+        return self.inline("%this".to_string(), target_register);
+      },
       Array(_) => std::panic!("Not implemented: Array expression"),
       Object(_) => std::panic!("Not implemented: Object expression"),
       Fn(_) => std::panic!("Not implemented: Fn expression"),
@@ -460,16 +462,24 @@ impl<'a> ExpressionCompiler<'a> {
     &mut self,
     lit: &swc_ecma_ast::Lit,
     target_register: Option<String>,
+  ) -> CompiledExpression {
+    return self.inline(compile_literal(lit), target_register);
+  }
+
+  fn inline(
+    &mut self,
+    value_assembly: String,
+    target_register: Option<String>,
   ) -> CompiledExpression {
     return match target_register {
       None => CompiledExpression {
-        value_assembly: compile_literal(lit),
+        value_assembly: value_assembly,
         used_available_register: false,
         nested_registers: Vec::new(),
       },
       Some(t) => {
         let mut instr = "  mov ".to_string();
-        instr += &compile_literal(lit);
+        instr += &value_assembly;
         instr += " %";
         instr += &t;
         self.definition.push(instr);