From 2c4f15ada136d19e20793cb9bf2ff0bd51a7cd08 Mon Sep 17 00:00:00 2001
From: Hatter Jiang <jht5945@gmail.com>
Date: Wed, 6 May 2020 00:30:57 +0800
Subject: [PATCH] add context

---
 src/context.rs | 21 +++++++++++++++++++++
 src/ins.rs     |  1 -
 src/main.rs    | 11 ++++++++++-
 3 files changed, 31 insertions(+), 2 deletions(-)
 create mode 100644 src/context.rs

diff --git a/src/context.rs b/src/context.rs
new file mode 100644
index 0000000..026239d
--- /dev/null
+++ b/src/context.rs
@@ -0,0 +1,21 @@
+use std::collections::HashMap;
+
+#[derive(Debug)]
+pub struct Context {
+    ptr: isize,
+    stack: Vec<isize>,
+    label_map: HashMap<isize, isize>,
+    mem_map: HashMap<isize, isize>,
+}
+
+impl Context {
+
+    pub fn new() -> Self {
+        Self {
+            ptr: 0,
+            stack: vec![],
+            label_map: HashMap::new(),
+            mem_map: HashMap::new(),
+        }
+    }
+}
\ No newline at end of file
diff --git a/src/ins.rs b/src/ins.rs
index f220f17..5a72716 100644
--- a/src/ins.rs
+++ b/src/ins.rs
@@ -1,5 +1,4 @@
 
-
 #[derive(Debug)]
 pub enum InsId {
     Push, // has data
diff --git a/src/main.rs b/src/main.rs
index 745c4bc..c1c927f 100644
--- a/src/main.rs
+++ b/src/main.rs
@@ -1,8 +1,10 @@
 mod err;
 mod ins;
+mod context;
 
 use err::*;
 use ins::*;
+use context::*;
 
 const VALID_INSTRUCTION_CHARS: &str = "草泥马河蟹";
 
@@ -11,7 +13,14 @@ const VALID_INSTRUCTION_CHARS: &str = "草泥马河蟹";
 fn main() {
     let input = "草草草泥马 马草草草泥草草草草泥泥马 草马草 泥马草泥 草草草泥草泥草马 泥马草草 草草草泥马 泥草草草 草马草 草草草泥草泥泥马 泥草草泥 马泥草草泥草草草泥草泥马 马草马草泥草草草草泥泥马 马草草草泥草草草泥草泥马 草马马 马马马";
 
-    parse_lang(input).ok();
+    let _instructions = match parse_lang(input) {
+        Ok(i) => i, Err(err) => {
+            println!("Parse error: {}", err);
+            return;
+        },
+    };
+
+    let _context = Context::new();
 }
 
 fn parse_lang(lang: &str) -> Result<Vec<Instruction>, ParseError> {