Code generation and output file gen

2020-08-19 22:55:28 +02:00 · 2020-08-19 22:55:28 +02:00 · 26d10cfef0
commit 26d10cfef0
parent 3ea0178678
8 changed files with 197 additions and 69 deletions
--- a/Compiler/Generator/Generator.cs
+++ b/Compiler/Generator/Generator.cs
@ -0,0 +1,48 @@
+using System;
+using System.Linq;
+using Compiler.Parser;
+using Compiler.Parser.Nodes;
+
+namespace Compiler.Generator
+{
+    public class Generator
+    {
+        public string Generate(Node rootNode)
+        {
+            string s = "";
+            switch (rootNode.NodeType)
+            {
+                case NodeType.ProgramNode:
+                    foreach (Node rootNodeChild in rootNode.Children)
+                    {
+                        s += Generate(rootNodeChild);
+                    }
+
+                    break;
+                case NodeType.FunctionNode:
+                    string identifier = ((FunctionNode) rootNode).Name;
+                    string functionBody = "";
+                    foreach (Node rootNodeChild in rootNode.Children)
+                    {
+                        functionBody += Generate(rootNodeChild);
+                    }
+
+                    s = $".globl {identifier}\n" +
+                        $"{identifier}:\n" +
+                        $"{functionBody}";
+                    break;
+                case NodeType.ReturnStatementNode:
+                    s = $"movl ${Generate(rootNode.Children[0])}, %eax \n" +
+                        "ret\n";
+                    break;
+                case NodeType.ExpressionNode:
+                    s = ((ConstantNode) rootNode).value.ToString();
+                    break;
+                default:
+                    throw new ArgumentOutOfRangeException();
+            }
+
+            return s;
+        }
+    }
+}