cargo fmt

src/assembler/mod.rs

@@ -1,5 +1,5 @@
 mod AST;
-mod tests;
 mod parser;
+mod tests;
 
 struct Assembler {}

src/assembler/parser.rs

@@ -1,6 +1,4 @@
-use crate::cpu::Registers;
+use super::AST::{Const, Operation};
-
-use super::AST::{Operation, Const};
 use Operation::*;
 
 type Loc = u16;
@@ -11,14 +9,14 @@ pub enum ParseError {
     UnknownSectionKind,
     UnexpectedEOF,
     BadSectionContent,
-    BadInstruction
+    BadInstruction,
 }
 
 /// represents the state of our parser.
 pub struct Parser {
     loc: u16,                     // current number of operations parsed.
     symtable: Vec<(String, u16)>, // symbols encountered, position.
-    pub input: Vec<String>,           // input file
+    pub input: Vec<String>,       // input file
 }
 
 impl Parser {
@@ -47,29 +45,25 @@ fn remove_comments(i: &str) -> &str {
     } else {
         return i;
     }
-} 
+}
-
 
 /// Checks if the string i starts with pat.
 /// Returns the rest of the input string on success
 /// else, returns None
 fn match_string(i: &str, pat: &str) -> Option<String> {
-
     let mut in_chars = i.chars();
 
     for pat_c in pat.chars() {
         if let Some(c) = in_chars.next() {
             if c != pat_c {
-                return None
+                return None;
             }
         };
-
     }
 
     let rest = in_chars.collect();
 
     return Some(rest);
-
 }
 
 ///  Matches till the "stop" string is found.
@@ -79,33 +73,30 @@ fn match_string(i: &str, pat: &str) -> Option<String> {
 ///  Ex: assert_eq!(Ok("Lorem ", " Ipsum"), match_alpha_till("Lorem X Ipsum", "X") );
 ///
 fn take_alpha_till(i: &str, stop: &str) -> Option<(String, String)> {
-
     //
     if let Some((matched, rest)) = i.split_once(stop) {
-        return Some((matched.to_string(), rest.to_string()))
+        return Some((matched.to_string(), rest.to_string()));
     } else {
-        return None
+        return None;
     }
-    
-
 }
 
 /// Matches inside the `start` and `stop` delimiters.
 /// Return a tuple with the string in between the two
 /// togheter with the rest of the string.
 fn take_between(i: &str, start: &str, stop: &str) -> Option<(String, String)> {
-    
     let s1 = match_string(i, start)?;
 
     return take_alpha_till(&s1, stop);
-
 }
 
 #[test]
 fn take_between_test() {
-    assert_eq!(take_between("\"wow\" etc", "\"", "\""), Some(("wow".to_string(), " etc".to_string())));
+    assert_eq!(
-} 
+        take_between("\"wow\" etc", "\"", "\""),
-
+        Some(("wow".to_string(), " etc".to_string()))
+    );
+}
 
 //// SECTION PARSING
 
@@ -113,7 +104,7 @@ fn take_between_test() {
 enum SectionContent {
     Code(Vec<Operation>),
     CString(String),
-    CVec()
+    CVec(),
 }
 
 use SectionContent::*;
@@ -121,19 +112,18 @@ use SectionContent::*;
 #[derive(Debug)]
 pub struct Section {
     name: String,
-    content: SectionContent, 
+    content: SectionContent,
 }
 
 // A .section has a name and variable content.
 impl Parser {
-
     pub fn parse_sections(&mut self) -> Result<Vec<Section>, ParseError> {
         let mut res = vec![];
 
         let mut lines = self.input.iter().map(|x| x.as_str()).into_iter();
 
-        while let Some(l) = lines.next() { 
+        while let Some(l) = lines.next() {
-        println!("Examing line: {}", l);
+            println!("Examing line: {}", l);
             if l.starts_with(".") {
                 let Some((kind, name)) = take_alpha_till(&l[1..], " ") else {
                     return Err(ParseError::BadSectionHeader);
@@ -141,50 +131,48 @@ impl Parser {
 
                 match kind.as_str() {
                     "text" => {
-                        let s : Vec<&str> = lines.clone().take_while(|&x| !(x).starts_with(".")).map(|x| x).collect();
+                        let s: Vec<&str> = lines
-                        res.push(Section { name: name.trim().to_owned(), content: Code(parse_code(&s)?)})
+                            .clone()
+                            .take_while(|&x| !(x).starts_with("."))
+                            .map(|x| x)
+                            .collect();
+                        res.push(Section {
+                            name: name.trim().to_owned(),
+                            content: Code(parse_code(&s)?),
+                        })
                     }
                     "asciiz" => {
                         let Some(s) = lines.next() else {return Err(ParseError::UnexpectedEOF)};
                         let Some((s, _)) = take_between(s.trim(), "\"", "\"") else {return Err(ParseError::BadSectionContent)};
-                        res.push(Section { name: name.trim().to_owned(), content: CString(s)})
+                        res.push(Section {
-
+                            name: name.trim().to_owned(),
+                            content: CString(s),
+                        })
                     }
                     "i16" => {
-                        let s = lines.next();
+                        let _s = lines.next();
-
                     }
                     "u16" => {
-                        let s = lines.next();
+                        let _s = lines.next();
-
                     }
                     "vi16" => {
-                        let s = lines.next();
+                        let _s = lines.next();
-
                     }
                     "vu16" => {
-                        let s = lines.next();
+                        let _s = lines.next();
-
                     }
                     _ => {
                         return Err(ParseError::UnknownSectionKind);
                     }
                 }
             }
-
+        }
-
-
-        };
-
 
         return Ok(res);
     }
-
 }
 
-
 fn parse_code(i: &[&str]) -> Result<Vec<Operation>, ParseError> {
-
     let mut res = vec![];
 
     for line in i {
@@ -194,53 +182,47 @@ fn parse_code(i: &[&str]) -> Result<Vec<Operation>, ParseError> {
     return Ok(res);
 }
 
-
 fn parse_code_line(i: &str) -> Result<Operation, ParseError> {
-    
+    // every operation has at most 3 arguments
-   // every operation has at most 3 arguments
+    let mut bits = i.split_whitespace();
-   let mut bits = i.split_whitespace();
+    println!("current parse code line: {}", i);
-   println!("current parse code line: {}", i);
+    let Some(op) = bits.next() else {return Err(ParseError::BadSectionContent)};
-   let Some(op) = bits.next() else {return Err(ParseError::BadSectionContent)};
 
-   // no type
+    // no type
-   match op {
+    match op {
-       "nop" => {return Ok(NOP);},
+        "nop" => {
-       "halt" => {return Ok(HALT);},
+            return Ok(NOP);
-       _ => {}
+        }
+        "halt" => {
+            return Ok(HALT);
+        }
+        _ => {}
     };
 
-   // I-type
+    // I-type
-   let Some(r1) = bits.next() else {return Err(ParseError::BadSectionHeader)};
+    let Some(r1) = bits.next() else {return Err(ParseError::BadSectionHeader)};
-   let Some(r2) = bits.next() else {return Err(ParseError::BadSectionHeader)};
+    let Some(r2) = bits.next() else {return Err(ParseError::BadSectionHeader)};
 
-   match op {
+    match op {
-       "addi" => {
+        "addi" => {
-           return Ok(ADDI(r1.to_owned(), parse_const(r2)?));
+            return Ok(ADDI(r1.to_owned(), parse_const(r2)?));
-       }
+        }
-       "sli" => {
+        "sli" => {
-           return Ok(SLI(r1.to_owned(), parse_const(r2)?));
+            return Ok(SLI(r1.to_owned(), parse_const(r2)?));
-
+        }
-       }
+        "call" => {
-       "call" => {
+            return Ok(CALL(r1.to_owned(), parse_const(r2)?));
-
+        }
-           return Ok(CALL(r1.to_owned(), parse_const(r2)?));
+        _ => {}
-
+    }
-       }
-       _ => {}
-   }
-
-    
-   return Err(ParseError::BadInstruction);
 
+    return Err(ParseError::BadInstruction);
 }
 
 fn parse_const(i: &str) -> Result<Const, ParseError> {
-
     // we try to parse the number, if we fail, we treat it as a string.
     let Ok(num) = i.parse() else {
         return Ok(Const::CS(i.to_owned()));
     };
     return Ok(Const::C(num));
-
 }
-

src/assembler/tests.rs

@@ -1,16 +1,18 @@
 // use super::*;
 
-use crate::assembler::parser;
+#[cfg(test)]
+mod tests {
+    use crate::assembler::parser;
 
-#[test]
+    #[test]
-fn parser_test() {
+    fn parser_test() {
+        println!("Parser test begins");
+        let code = std::fs::read_to_string("./tests/assembly/hello_world.grasm").unwrap();
 
-    println!("Parser test begins");
+        let mut parser = parser::Parser::new(code);
-    let code = std::fs::read_to_string("./tests/assembly/hello_world.grasm").unwrap();
 
-    let mut parser = parser::Parser::new(code);
+        let r = parser.parse_sections().unwrap();
 
-    let r = parser.parse_sections().unwrap();
+        println!("Parsed sections: {:?}", r);
-
+    }
-    println!("Parsed sections: {:?}", r);
 }

src/cpu/mod.rs

@@ -2,7 +2,9 @@ mod decoder;
 mod ram;
 mod registers;
 mod sysenv;
+
 mod tests;
+
 pub use sysenv::*;
 
 pub use registers::*;

src/cpu/sysenv/io_vec.rs

@@ -70,7 +70,7 @@ impl Sys for IOBuffer {
                     .slice(pos, MAX_MEM as Word - 1)
                     .ok_or(ExecErr::InvalidMemoryAddr)?;
                 let (s, _) = find_and_read_string(&data)
-                    .map_err(|p| ExecErr::SyscallError("parse error!".to_owned()))?;
+                    .map_err(|_p| ExecErr::SyscallError("parse error!".to_owned()))?;
                 cpu.env.output.push_str(&s);
             }
 

src/cpu/tests.rs

@@ -1,35 +1,35 @@
+#[cfg(test)]
+mod tests {
 
-use super::*;
+    use crate::{
+        cpu::{IOBuffer, CPU},
+        loader::unloader::make_string,
+    };
 
-use crate::loader::unloader::*;
+    #[test]
+    fn hello_world_binary_test() {
+        let hw = String::from("Hello world!");
 
+        let mut k = make_string(&hw);
 
-#[test]
+        let mut code: Vec<u16> = vec![
-fn hello_world_binary_test() {
+            0b0111000100000011, // addi ra 3
+            0b1110000100000011, // ecall ra 3
+            0b1111000000000000, // HALT.
+        ];
 
-    let hw = String::from("Hello world!");
+        code.append(&mut k);
 
-    let mut k = make_string(&hw);
+        let mut env = IOBuffer::default();
 
-    let mut code: Vec<u16> = vec![
+        let mut cpu = CPU::new(&mut env);
-        0b0111000100000011, // addi ra 3
-        0b1110000100000011, // ecall ra 3
-        0b1111000000000000, // HALT.
-    ];
 
-    code.append(&mut k);
+        for c in &code[..] {
+            println!("{:#018b}", c);
+        }
 
-    let mut env = IOBuffer::default();
+        cpu.run_code_raw(&code);
 
-    let mut cpu = CPU::new(&mut env);
+        assert_eq!(hw, cpu.env.output);
-
-    for c in &code[..] {
-        println!("{:#018b}", c);
     }
-
-    cpu.run_code_raw(&code);
-
-    assert_eq!(hw, cpu.env.output);
 }
-
-

src/lib.rs

@@ -7,7 +7,6 @@ pub mod loader;
 pub mod assembler;
 //
 
-
 pub fn interpret_as_signed(x: u16) -> i16 {
     // the two types have the same size.
     unsafe {

src/loader/loader.rs

@@ -1,6 +1,6 @@
 use crate::cpu::Word;
 
-use super::{constants::MAGIC, Section};
+use super::Section;
 
 #[derive(Debug)]
 pub enum ParseError {
@@ -71,7 +71,7 @@ pub fn read_binary(b: &[u16]) -> Result<Vec<Section>, ParseError> {
 
 /// Parses binary headers
 fn parse_header(b: &[Word]) -> Result<Vec<(u16, u16)>, ParseError> {
-    let Some([m, s]) = b.get(0..2) else {return Err(ParseError::EmptyHeader)};
+    let Some([_m, s]) = b.get(0..2) else {return Err(ParseError::EmptyHeader)};
 
     // Magic number check. Can go unchecked, check spec.
     // if (*m != MAGIC) {

src/loader/tests.rs

@@ -1,61 +1,65 @@
-use super::loader::*;
+#[cfg(test)]
-use super::unloader::*;
+mod tests {
-use super::*;
+    use crate::loader::Section;
 
-// fuzzable, TODO
+    use super::super::loader::*;
-fn write_read_str_identity(s: &str) {
+    use super::super::unloader::*;
-    let mut bytes = make_string(s);
 
-    // pop null-terminator;
+    // fuzzable, TODO
-    // bytes.pop().expect("String doesn't even have a single byte?");
+    fn write_read_str_identity(s: &str) {
-    // println!("w-r s: {:?}, b: {:?}", s, bytes);
+        let bytes = make_string(s);
-    let (s0, _) = find_and_read_string(&bytes).unwrap();
-    assert_eq!(s, &s0);
-}
 
-fn read_write_str_identity(b: Vec<u16>) {
+        // pop null-terminator;
-    let (string, _) = find_and_read_string(&b).unwrap();
+        // bytes.pop().expect("String doesn't even have a single byte?");
-    let mut n_term = b.clone();
+        // println!("w-r s: {:?}, b: {:?}", s, bytes);
-    // n_term.push(0);
+        let (s0, _) = find_and_read_string(&bytes).unwrap();
-    // println!("r-w s: {:?}, b: {:?}", string, n_term);
+        assert_eq!(s, &s0);
-    assert_eq!(n_term, make_string(&string));
+    }
-}
 
-#[test]
+    fn read_write_str_identity(b: Vec<u16>) {
-fn label_parse_identity() {
+        let (string, _) = find_and_read_string(&b).unwrap();
-    let testwords = vec!["Hello,", "main", "è", "Hello,,", "v", "main", "pi"]; // should support utf-8
+        let n_term = b.clone();
-                                                                               //
+        // n_term.push(0);
-    for word in testwords {
+        // println!("r-w s: {:?}, b: {:?}", string, n_term);
-        println!("\nTEST {}\n", word);
+        assert_eq!(n_term, make_string(&string));
+    }
 
-        write_read_str_identity(word);
+    #[test]
-        let bytes = make_string(word);
+    fn label_parse_identity() {
-        // bytes.pop();
+        let testwords = vec!["Hello,", "main", "è", "Hello,,", "v", "main", "pi"]; // should support utf-8
-        println!(
+                                                                                   //
-            "word: {:?}, bytes: {:?}, length: {:?}",
+        for word in testwords {
-            word,
+            println!("\nTEST {}\n", word);
-            bytes,
+
-            bytes.len()
+            write_read_str_identity(word);
-        );
+            let bytes = make_string(word);
-        read_write_str_identity(bytes);
+            // bytes.pop();
-        println!("Done with {:?}", word);
+            println!(
+                "word: {:?}, bytes: {:?}, length: {:?}",
+                word,
+                bytes,
+                bytes.len()
+            );
+            read_write_str_identity(bytes);
+            println!("Done with {:?}", word);
+        }
+    }
+
+    // Symbol table test
+
+    #[test]
+    fn sy_test() {
+        let fake_symbol_table: Vec<Section> = vec![
+            Section::new("v".to_owned(), &[1, 2, 3]),
+            Section::new("pi".to_owned(), &[3]),
+            Section::new("main".to_owned(), &[231, 323, 433]), // Section { name: todo!(), content: todo!() },
+                                                               // Section { name: todo!(), content: todo!() }
+        ];
+
+        let bin = make_binary(&fake_symbol_table);
+        println!("{:?}", bin);
+
+        let parsed_symbol_table = read_binary(&bin).expect("Wtf! We got error!");
+        println!("{:?}", parsed_symbol_table);
     }
 }
-
-// Symbol table test
-
-#[test]
-fn sy_test() {
-    let fake_symbol_table: Vec<Section> = vec![
-        Section::new("v".to_owned(), &[1, 2, 3]),
-        Section::new("pi".to_owned(), &[3]),
-        Section::new("main".to_owned(), &[231, 323, 433]), // Section { name: todo!(), content: todo!() },
-                                                           // Section { name: todo!(), content: todo!() }
-    ];
-
-    let bin = make_binary(&fake_symbol_table);
-    println!("{:?}", bin);
-
-    let parsed_symbol_table = read_binary(&bin).expect("Wtf! We got error!");
-    println!("{:?}", parsed_symbol_table);
-}

src/main.rs

@@ -27,6 +27,4 @@ fn main() {
         }
         Err(e) => println!("Err: {:?}", e),
     };
-
-
 }