Add custom arguments example

Author: QuickWrite

examples/03_custom_arguments.lua

@@ -0,0 +1,35 @@
+local LuASM = require("luasm")
+
+-- 1. Define the instruction set
+local instructions = {
+    LuASM.instruction("print", { "string" }, {}),
+    LuASM.instruction("mov", { "reg", "reg" }, {})
+}
+
+-- 2. Create a runner (use default settings)
+local asm = LuASM:new(instructions, {
+    syntax = {
+        string = "^\"[%w]*\"",
+        reg    = "^%a[%w]*"
+    }
+})
+
+-- 3. Tokenize a source string
+local src = [[
+
+mov reg0, reg1
+print "Hello"
+]]
+local tokenizer = LuASM.string_tokenizer(src)
+
+-- 4. Parse
+local result = asm:parse(tokenizer)
+
+print("Lines parsed:", result.parsed_lines)
+for name, info in pairs(result.labels) do
+    print("Label: " .. name .. " -> line: " .. info.location)
+end
+
+for i, instr in ipairs(result.instructions) do
+    print(i, instr.op)   -- currently just the instruction name
+end