[UNVERIFIED] update to spec 1.10, parser rewrite.

README.md

@@ -1,5 +1,5 @@
 # Labast
-A zero-dependencies Labaski interpreter written in Rust. Fully supports Labashki specs 1.7.1.
+A zero-dependencies Labaski interpreter written in Rust. Fully supports Labashki specs 1.10.
 
 ## Examples
 See `scripts` directory.

scripts/calc.lb

@@ -0,0 +1,26 @@
+; written by Labashki developer - aeris
+@ 0
+    scan
+    scan
+    scan
+    |jmp 0
+
+@ 1
+    add
+    meow
+    quit
+
+@ 2
+    sub
+    meow dkdkd
+    quit 
+
+@ 3
+    mul
+    meow
+    quit
+
+@ 4
+    div
+    meow
+    quit

scripts/hello-world-old.lb

@@ -0,0 +1,30 @@
+push 72  ; H
+putc     ; Print to console
+push 101 ; e
+putc
+push 108 ; l
+putc
+push 108 ; l
+putc
+push 111 ; o
+putc
+push 32  ; <space>
+putc
+push 76  ; L
+putc
+push 97  ; a
+putc
+push 98  ; b
+putc
+push 97  ; a
+putc
+push 115 ; s
+putc
+push 104 ; h
+putc
+push 107 ; k
+putc
+push 105 ; i
+putc
+push 33  ; !
+putc

scripts/hello-world.lb

@@ -1,30 +1 @@
-push 72  ; H
+$print Hello Labashki!
-putc     ; Print to console
-push 101 ; e
-putc
-push 108 ; l
-putc
-push 108 ; l
-putc
-push 111 ; o
-putc
-push 32  ; <space>
-putc
-push 76  ; L
-putc
-push 97  ; a
-putc
-push 98  ; b
-putc
-push 97  ; a
-putc
-push 115 ; s
-putc
-push 104 ; h
-putc
-push 107 ; k
-putc
-push 105 ; i
-putc
-push 33  ; !
-putc

src/errors.rs

@@ -12,6 +12,9 @@ pub enum RunError {
     UnknownLabel(u16),
     InvalidExpressionUnknownOperator(String),
     MemoryEmpty,
+    AttemptToInsertHashOrStringInst,
+    AttemptToInsertEmptyConst,
+    AttemptToInsertALabel
 }
 
 impl Display for RunError {
@@ -28,18 +31,21 @@ impl Display for RunError {
             RunError::UnknownLabel(label_name) => write!(f, "Unknown label: {}", label_name),
             RunError::InvalidExpressionUnknownOperator(name) => write!(f, "Invalid expression: unknown operator '{}'", name),
             RunError::MemoryEmpty => write!(f, "No elements in memory!"),
+            RunError::AttemptToInsertHashOrStringInst => write!(f, "Attempt to insert a hash/string-instruction"),
+            RunError::AttemptToInsertEmptyConst => write!(f, "Attempt to insert an empty constant"),
+            RunError::AttemptToInsertALabel => write!(f, "Attempt to insert a label"),
         }
     }
 }
 
 pub enum ParseError {
-    DataNotAUInt(String, usize)
+    ArgumentNotRequired(String, usize, String)
 }
 
 impl Display for ParseError {
     fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
         match self {
-            ParseError::DataNotAUInt(name, line) => write!(f, "Argument for {0} at {1} isn't a number", name, line),
+            ParseError::ArgumentNotRequired(name, line_number, line) => write!(f, "ParseError:\n{1} | {2}\nerror: string argument for {0} not required", name, line_number, line),
         }
     }
 }

src/execute.rs

@@ -68,43 +68,46 @@ pub fn execute(stack: &mut Stack, mut origin_stack: Option<&mut Stack>, mod_name
         match instruction.name.as_str() {
             // Stack operations
             "push" => instructions::push::push(&mut stack.memory, &instruction.data),
-            "pick" => instructions::pick::pick(&mut stack.memory, &instruction.data),
             "pop"  => instructions::pop::pop(&mut stack.memory),
             "dup"  => instructions::dup::dup(&mut stack.memory),
             "swap" => instructions::swap::swap(&mut stack.memory),
-            "meow" => instructions::meow::meow(&mut stack.memory),
+            "pick" => instructions::pick::pick(&mut stack.memory, &instruction.data),
-            "dump" => instructions::dump::dump(&mut stack.memory),
-            "size" => instructions::size::size(&mut stack.memory),
-            "maxsize" => instructions::maxsize::maxsize(&mut stack.memory),
 
-            "#expr" => instructions::expr::expr(&mut stack.memory, &instruction.arg),
+            // Math
-
-            // Labels
-            "jmp" => instructions::jmp::jmp(&mut stack.labels, &mut stack.program_counter, &instruction.data),
-            "jnz" => instructions::jnz::jnz(&mut stack.memory, &mut stack.labels, &mut stack.program_counter, &instruction.data),
-            "jz"  => instructions::jz::jz(&mut stack.memory, &mut stack.labels, &mut stack.program_counter, &instruction.data),
-
-            // Math operations
             "add" => instructions::add::add(&mut stack.memory),
             "sub" => instructions::sub::sub(&mut stack.memory),
             "mul" => instructions::mul::mul(&mut stack.memory),
             "div" => instructions::div::div(&mut stack.memory),
             "mod" => instructions::modulo::modulo(&mut stack.memory),
 
+            // Logic
             "and"   => instructions::and::and(&mut stack.memory),
             "or"    => instructions::or::or(&mut stack.memory),
             "xor"   => instructions::xor::xor(&mut stack.memory),
             "nand"  => instructions::nand::nand(&mut stack.memory),
+            "not"   => instructions::not::not(&mut stack.memory),
+
+            // Bitwise
             "band"  => instructions::band::band(&mut stack.memory),
             "bor"   => instructions::bor::bor(&mut stack.memory),
             "bxor"  => instructions::bxor::bxor(&mut stack.memory),
             "bnand" => instructions::bnand::bnand(&mut stack.memory),
-            "not"   => instructions::not::not(&mut stack.memory),
+            "bnot"   => instructions::not::not(&mut stack.memory),
 
-            // Console operations
+            // Labels
-            "putc" => instructions::putc::putc(&mut stack.memory),
+            "jmp"  => instructions::jmp::jmp(&mut stack.labels, &mut stack.program_counter, &instruction.data),
-            "getc" => instructions::getc::getc(&mut stack.memory),
+            "jnz"  => instructions::jnz::jnz(&mut stack.memory, &mut stack.labels, &mut stack.program_counter, &instruction.data),
-            "scan" => instructions::scan::scan(&mut stack.memory),
+            "jz"   => instructions::jz::jz(&mut stack.memory, &mut stack.labels, &mut stack.program_counter, &instruction.data),
+            "kjnz" => instructions::kjnz::kjnz(&mut stack.memory, &mut stack.labels, &mut stack.program_counter, &instruction.data),
+            "kjz"  => instructions::kjz::kjz(&mut stack.memory, &mut stack.labels, &mut stack.program_counter, &instruction.data),
+
+            // Input/Output
+            "putc"   => instructions::putc::putc(&mut stack.memory),
+            "getc"   => instructions::getc::getc(&mut stack.memory),
+            "scan"   => instructions::scan::scan(&mut stack.memory),
+            "meow"   => instructions::meow::meow(&mut stack.memory),
+            "#print" => instructions::print::print(&instruction.arg),
+            "$print" => instructions::print::print(&instruction.arg),
 
             // Modules
             "args"  => instructions::args::args(&mut stack.memory, &mut origin_stack, &instruction.data),
@@ -113,14 +116,28 @@ pub fn execute(stack: &mut Stack, mut origin_stack: Option<&mut Stack>, mod_name
                 instructions::exec::exec(stack, &arg, &mod_name);
             }
 
+            // Self-modifying
+            
+            "#insert" => {
+                let arg = instruction.arg.clone();
+                let data = instruction.data.clone();
+
+                instructions::insert::insert(&mut stack.program, &arg, &data)
+            },
+
+            // Special
+            "dump" => instructions::dump::dump(&mut stack.memory),
+            "size" => instructions::size::size(&mut stack.memory),
+            "maxsize" => instructions::maxsize::maxsize(&mut stack.memory),
+            "#expr" => instructions::expr::expr(&mut stack.memory, &instruction.arg),
+            "nop"  => continue,
+            "quit" => std::process::exit(0),
+            "exit" => instructions::exit::exit(&instruction.data),
+
+            // Platform-specific
             #[cfg(target_family = "unix")] 
             "_unix_random" => instructions::_unix_random::_unix_random(&mut stack.memory),
 
-            // ?
-            "nop"  => continue,
-            "exit" => instructions::exit::exit(&instruction.data),
-            "quit" => std::process::exit(0),
-
             _ => {
                 eprintln!("Unknown instruction: {}", instruction.name);
                 std::process::exit(2);

src/instructions/insert.rs

@@ -0,0 +1,26 @@
+use crate::{errors::RunError, stack::Instruction};
+
+pub fn insert(program: &mut Vec<Instruction>, arg: &String, data: &u16) {
+    let args: Vec<char> = arg.chars().collect();
+    
+    if args[0] == '#' || args[0] == '$' {
+        eprintln!("{}", RunError::AttemptToInsertHashOrStringInst);
+        std::process::exit(2);
+    }
+    
+    if args[0] == '\n' {
+        eprintln!("{}", RunError::AttemptToInsertEmptyConst);
+        std::process::exit(2);
+    }
+    
+    if args[0] == '@' || args[1] == ' ' {
+        eprintln!("{}", RunError::AttemptToInsertALabel);
+        std::process::exit(2);
+    }
+
+    program.push(Instruction {
+        name:  arg.to_string(),
+        arg:  "\n".to_string(),
+        data: *data
+    });
+}

src/instructions/jnz.rs

@@ -6,7 +6,7 @@ pub fn jnz(memory: &mut Vec<u16>, labels: &mut [Option<i16>; 256], program_count
         std::process::exit(2);
     }
 
-    if memory.last() != Some(&0) {
+    if memory.pop() != Some(0) {
         *program_counter = (labels[*data as usize].unwrap() - 1) as u16;
     }
 }

src/instructions/jz.rs

@@ -6,7 +6,7 @@ pub fn jz(memory: &mut Vec<u16>, labels: &mut [Option<i16>; 256], program_counte
         std::process::exit(2);
     }
 
-    if memory.last() == Some(&0) {
+    if memory.pop() == Some(0) {
         *program_counter = (labels[*data as usize].unwrap() - 1) as u16;
     }
 }

src/instructions/kjnz.rs

@@ -0,0 +1,12 @@
+use crate::errors::RunError;
+
+pub fn kjnz(memory: &mut Vec<u16>, labels: &mut [Option<i16>; 256], program_counter: &mut u16, data: &u16) {
+    if labels[*data as usize].is_none() {
+        eprintln!("{}", RunError::UnknownLabel(*data));
+        std::process::exit(2);
+    }
+
+    if memory.last() != Some(&0) {
+        *program_counter = (labels[*data as usize].unwrap() - 1) as u16;
+    }
+}

src/instructions/kjz.rs

@@ -0,0 +1,12 @@
+use crate::errors::RunError;
+
+pub fn kjz(memory: &mut Vec<u16>, labels: &mut [Option<i16>; 256], program_counter: &mut u16, data: &u16) {
+    if labels[*data as usize].is_none() {
+        eprintln!("{}", RunError::UnknownLabel(*data));
+        std::process::exit(2);
+    }
+
+    if memory.last() == Some(&0) {
+        *program_counter = (labels[*data as usize].unwrap() - 1) as u16;
+    }
+}

src/instructions/mod.rs

@@ -33,3 +33,7 @@ pub mod bor;
 pub mod bxor;
 pub mod bnand;
 pub mod not;
+pub mod kjnz;
+pub mod kjz;
+pub mod print;
+pub mod insert;

src/instructions/print.rs

@@ -0,0 +1,3 @@
+pub fn print(arg: &String) {
+    println!("{}", arg);
+}

src/parse.rs

@@ -13,7 +13,9 @@ pub fn parse(stack: &mut Stack, file_content: &str) {
             inst_line = line.trim().chars().collect();
         }
 
-        let command: Vec<String> = inst_line.split_whitespace().map(String::from).collect();
+        let command: [String; 2] = inst_line.split_once(char::is_whitespace)
+        .map_or_else(|| [inst_line.to_string(), "".to_string()],
+        |(first, second)| [first.to_string(), second.to_string()]);
 
         let name: String;
         let mut arg: String = String::new();
@@ -21,16 +23,19 @@ pub fn parse(stack: &mut Stack, file_content: &str) {
 
         name = command[0].clone();
 
-        if command.len() >= 2 {
+        if !command[1].is_empty() {
-            match name.chars().nth(0) {
+            if name.chars().nth(0) == Some('#') || name.chars().nth(1) == Some('#') {    
-                Some('#') => arg = command[1].to_string(),
+                let splited_data: Vec<String> = command[1].split_whitespace().map(String::from).collect();
-                _ => {
+                arg = splited_data.get(0).unwrap().clone();
-                    if command[1] == "-1" { // required for _UNIX_RANDOM instruction
+            } else if name.chars().nth(0) == Some('$') || name.chars().nth(1) == Some('$') {
-                        data = 65535;
+                arg = command[1].clone();
-                    } else {
+            } else if command[1] == "-1" { // required for
-                        data = command[1].parse().expect(&format!("{}", ParseError::DataNotAUInt(command[0].to_string(), i + 1)))
+                data = 65535;              // _unix_random
-                    }
+            } else if let Ok(number) = command[1].parse() {
-                }
+                data = number;
+            } else {
+                eprintln!("{}", ParseError::ArgumentNotRequired(command[0].to_string(), i + 1, line.to_string()));
+                std::process::exit(2);
             }
         }