From fd61dbea369510d4e352306aa25a4c96c4575fad Mon Sep 17 00:00:00 2001
From: Santo Cariotti <dcariotti24@gmail.com>
Date: Tue, 16 Jun 2020 20:32:53 +0200
Subject: feat: remove whitespaces from line

---
 src/main.rs       |  5 +++--
 src/parser/mod.rs | 63 +++++++++++++++++++++++++++++++++++++++++++++++++++++++
 2 files changed, 66 insertions(+), 2 deletions(-)

(limited to 'src')

diff --git a/src/main.rs b/src/main.rs
index a68851f..551710a 100644
--- a/src/main.rs
+++ b/src/main.rs
@@ -1,6 +1,7 @@
 pub mod parser;
-pub mod processor;
 
 fn main() {
-    println!("Hello, world!");
+    let _ = parser::parse_line("loop      ".to_string());
+    let _ = parser::parse_line("     mov     r0, r1".to_string());
+    let _ = parser::parse_line("     beq     suca".to_string());
 }
diff --git a/src/parser/mod.rs b/src/parser/mod.rs
index 4cf7e00..69fa6ca 100644
--- a/src/parser/mod.rs
+++ b/src/parser/mod.rs
@@ -20,6 +20,20 @@ pub struct Row {
     pub args: CommandArgs,
 }
 
+impl Row {
+    pub fn new() -> Self {
+        let command = CommandArgs {
+            arg_type: CommandArgsType::Nil,
+            args_vec: Vec::<String>::new(),
+        };
+
+        Row {
+            command: CommandType::Label,
+            args: command,
+        }
+    }
+}
+
 #[test]
 fn check_row() {
     let r: Row = Row {
@@ -31,3 +45,52 @@ fn check_row() {
     };
     assert_eq!(r.args.args_vec[0], "r0");
 }
+
+fn remove_spaces(line: String) -> String {
+    let mut it = line.chars().peekable();
+    let mut splitted_string = "".to_string();
+    while let Some(&c) = it.peek() {
+        match c {
+            ' ' | '\t' => {
+                it.next();
+            }
+            ch => {
+                splitted_string.push(ch);
+                it.next();
+                if let Some(&t) = it.peek() {
+                    match t {
+                        ' ' | '\t' => {
+                            splitted_string.push(' ');
+                        }
+                        ch => {
+                            splitted_string.push(ch);
+                        }
+                    }
+                }
+                it.next();
+            }
+        }
+    }
+
+    splitted_string
+
+}
+
+pub fn parse_line(line: String) -> Result<Row, String> {
+    let mut row = Row::new();
+
+    let mut splitted_string = remove_spaces(line);
+
+    splitted_string = splitted_string.to_lowercase();
+    let mut words : Vec<&str> = splitted_string.split(" ").collect();
+
+    if words.len() > 1 {
+        if words[1].ends_with(",") {
+            words[1] = words[1].trim_end_matches(',');
+        }
+    }
+
+    println!("{}, {:?}", words.len(), words);
+
+    Ok(row)
+}
-- 
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