From 9a6001ad380e83a545188b58145387593b117b48 Mon Sep 17 00:00:00 2001
From: Jan Tuomi <jans.tuomi@gmail.com>
Date: Mon, 10 Apr 2023 21:10:16 +0300
Subject: Refactor into multipass compiler

---
 src/asm_pass3.py | 46 ++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 46 insertions(+)
 create mode 100644 src/asm_pass3.py

(limited to 'src/asm_pass3.py')

diff --git a/src/asm_pass3.py b/src/asm_pass3.py
new file mode 100644
index 0000000..5365e3b
--- /dev/null
+++ b/src/asm_pass3.py
@@ -0,0 +1,46 @@
+from dataclasses import dataclass
+from assembler_ops import *
+from assembler_eval import *
+from asm_pass2 import *
+
+@dataclass
+class Result3Line:
+  line_num: int
+  address: int
+  parts: list[str]
+
+@dataclass
+class Result3:
+  lines: list[Result3Line]
+  options: Options
+  operations: OpExpansionDict
+  labels: dict[str, int]
+
+def pass_3(result2: Result2) -> Result3:
+  result_lines: list[Result3Line] = []
+  labels: dict[str, int] = {}
+  address = 0
+
+  for line in result2.lines:
+    keyword, *args = line.parts
+    match keyword:
+      case "@address":
+        address = eval(args[0])
+        continue
+      case "@label":
+        labels[args[0]] = address
+        continue
+      case _:
+        result_lines.append(Result3Line(
+          line_num=line.line_num,
+          parts=line.parts,
+          address=address,
+        ))
+        address += 1
+
+  return Result3(
+    operations=result2.operations,
+    options=result2.options,
+    lines=result_lines,
+    labels=labels,
+  )
-- 
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