fixed minor issues

src/builtin/modules/conv.rs

@@ -16,14 +16,16 @@ pub fn rat_to_int(args: &[Data]) -> Result<Option<Data>, ()> {
 
 pub fn str_to_int(args: &[Data]) -> Result<Option<Data>, ()> {
     match &args[0] {
-        Data::Str(val) => Ok(Some(Data::Int(val.parse().unwrap_or(0)))),
+        Data::Str(val) => {
+            Ok(Some(Data::Int(val.trim().parse().unwrap_or(0))))
+        },
         _ => Err(())
     }
 }
 
 pub fn str_to_rat(args: &[Data]) -> Result<Option<Data>, ()> {
     match &args[0] {
-        Data::Str(val) => Ok(Some(Data::Rat(val.parse().unwrap_or(0.0)))),
+        Data::Str(val) => Ok(Some(Data::Rat(val.trim().parse().unwrap_or(0.0)))),
         _ => Err(())
     }
 }

src/builtin/modules/io.rs

@@ -12,6 +12,12 @@ pub fn println(args: &[Data]) -> Result<Option<Data>, ()> {
     Ok(None)
 }
 
+pub fn read_line(_: &[Data]) -> Result<Option<Data>, ()> {
+    let mut buf = String::new();
+    std::io::stdin().read_line(&mut buf).unwrap();
+    Ok(Some(Data::Str(buf)))
+}
+
 pub fn get_module_funs<'a>() -> Vec<crate::builtin::BuiltinFun> {
     vec![
         BuiltinFun {
@@ -22,5 +28,9 @@ pub fn get_module_funs<'a>() -> Vec<crate::builtin::BuiltinFun> {
             declr: Declr::generate_builtin("println", vec![("text", Prim::Str)], None),
             func: &println
         },
+        BuiltinFun {
+            declr: Declr::generate_builtin("readline", vec![], Some(Prim::Str)),
+            func: &read_line
+        },
     ]
 }

src/main.rs

@@ -40,14 +40,21 @@ fn compile(settings: &Settings) -> Option<(Vec<Func>, Vec<Declr>, Vec<BuiltinFun
 
             if let Ok((funcs, declrs, builtin)) = parser.parse(&mut tokens, &mut diagnostics, &settings) {
                 if let Ok(prog) = vmrt::compile(&funcs, &declrs, builtin, &settings) {
+
+                    println!("{}", diagnostics);
+
                     if let Ok(exit_code) = vmrt::execute(&prog) {
                         crate::message(MessageType::Info, format!("Program exited with {}", exit_code));
                     }
+                } else {
+                    println!("{}", diagnostics);
                 }
+            } else {
+                println!("{}", diagnostics);
             }
+        } else {
+            println!("{}", diagnostics);
         }
-
-        println!("{}", diagnostics);
         continue;
     }
 

src/parser/data.rs

@@ -147,7 +147,7 @@ pub struct Declr<'a> {
 
 impl<'a> Declr<'a> {
 
-    pub fn generate_builtin(name: &'static str, args: Vec<(&'static str, Prim)>, ret: Option<Prim>) -> Declr {
+    pub fn generate_builtin(name: &'static str, args: Vec<(&'static str, Prim)>, ret: Option<Prim>) -> Declr<'a> {
         Declr {
             name: Some(name),
             args: if args.is_empty() {

src/token/mod.rs

@@ -150,7 +150,7 @@ impl Operator {
         }
 
         for (x, typ) in types.iter().enumerate() {
-            if *typ != operands[x] {
+            if *typ != operands[operands.len() - x - 1] {
                 return Err(());
             }
         }
@@ -596,8 +596,8 @@ const TOKEN_REGEX_SRC: &'static str = concat!(
     r"|'([a-zA-Z0-9_]+)",    // labels: 'example
     r"|(goto\s+[a-zA-Z0-9_]+",   // goto example
     r"|despite|until|loop|break|cont|ret|yield|please)", // keywords
-    r"|[\W\s]{0,1}(int|rat|bool|str)[\W\s]{0,1}", // raw data types
+    r"|\b(int|rat|bool|str)\b", // raw data types
-    r"|(true|false|ye|no|maybe)",   // boolean values
+    r"|\b(true|false|ye|no|maybe)\b",   // boolean values
     r"|([A-Za-z_]+)\s*(?::\s*([a-zA-Z0-9_]+))?\s*=[^=]", // assignment var:int=
     r"|([A-Za-z_]+)\s*(?::\s*([a-zA-Z0-9_]+))",  // declaration  var:int
     r"|([A-Za-z_]+)",   // symbol

src/vmrt/mod.rs

@@ -323,32 +323,44 @@ fn parse_term<'a>(
                         Prim::Int => Instr::Operation(Operation::Int(IntOp::CmpEq)),
                         Prim::Rat => Instr::Operation(Operation::Rat(RatOp::CmpEq)),
                         Prim::Bool => Instr::Operation(Operation::Bool(BoolOp::CmpEq)),
+                        Prim::Num(NumHint::Int) => Instr::Operation(Operation::Int(IntOp::CmpEq)),
+                        Prim::Num(NumHint::Rat) => Instr::Operation(Operation::Rat(RatOp::CmpEq)),
                         _ => panic!(),
                     },
                     crate::token::Operator::NotEq => match hint.unwrap() {
                         Prim::Int => Instr::Operation(Operation::Int(IntOp::CmpNEq)),
                         Prim::Rat => Instr::Operation(Operation::Rat(RatOp::CmpNEq)),
                         Prim::Bool => Instr::Operation(Operation::Bool(BoolOp::CmpNEq)),
+                        Prim::Num(NumHint::Int) => Instr::Operation(Operation::Int(IntOp::CmpNEq)),
+                        Prim::Num(NumHint::Rat) => Instr::Operation(Operation::Rat(RatOp::CmpNEq)),
                         _ => panic!(),
                     },
                     crate::token::Operator::Lt => match hint.unwrap() {
                         Prim::Int => Instr::Operation(Operation::Int(IntOp::CmpLt)),
                         Prim::Rat => Instr::Operation(Operation::Rat(RatOp::CmpLt)),
+                        Prim::Num(NumHint::Int) => Instr::Operation(Operation::Int(IntOp::CmpLt)),
+                        Prim::Num(NumHint::Rat) => Instr::Operation(Operation::Rat(RatOp::CmpLt)),
                         _ => panic!(),
                     },
                     crate::token::Operator::Gt => match hint.unwrap() {
                         Prim::Int => Instr::Operation(Operation::Int(IntOp::CmpGt)),
                         Prim::Rat => Instr::Operation(Operation::Rat(RatOp::CmpGt)),
+                        Prim::Num(NumHint::Int) => Instr::Operation(Operation::Int(IntOp::CmpGt)),
+                        Prim::Num(NumHint::Rat) => Instr::Operation(Operation::Rat(RatOp::CmpGt)),
                         _ => panic!(),
                     },
                     crate::token::Operator::GtEq => match hint.unwrap() {
                         Prim::Int => Instr::Operation(Operation::Int(IntOp::CmpGtEq)),
                         Prim::Rat => Instr::Operation(Operation::Rat(RatOp::CmpGtEq)),
+                        Prim::Num(NumHint::Int) => Instr::Operation(Operation::Int(IntOp::CmpGtEq)),
+                        Prim::Num(NumHint::Rat) => Instr::Operation(Operation::Rat(RatOp::CmpGtEq)),
                         _ => panic!(),
                     },
                     crate::token::Operator::LtEq => match hint.unwrap() {
                         Prim::Int => Instr::Operation(Operation::Int(IntOp::CmpLtEq)),
                         Prim::Rat => Instr::Operation(Operation::Rat(RatOp::CmpLtEq)),
+                        Prim::Num(NumHint::Int) => Instr::Operation(Operation::Int(IntOp::CmpLtEq)),
+                        Prim::Num(NumHint::Rat) => Instr::Operation(Operation::Rat(RatOp::CmpLtEq)),
                         _ => panic!(),
                     },
 
@@ -742,7 +754,7 @@ pub fn execute(prog: &Program) -> Result<i64, ()> {
             return Ok(exit_code.to_int()?);
         }
 
-        crate::message(crate::token::MessageType::Critical, "main procedure did not return exit code");
+        crate::message(crate::token::MessageType::Critical, "main function did not return exit code");
         return Err(());
     } else {
         crate::message(

test.erpn

@@ -4,6 +4,8 @@ extern function print
 
 extern function println
 
+extern function readline
+
 extern function to_rat
 
 extern function to_int
@@ -12,10 +14,22 @@ extern function parse_int
 
 extern function parse_rat
 
+extern function cos
+
+extern function pow
+
+extern function sin
+
+extern function tan
+
+extern function ln
+
+extern function sqrt
+
 fac:
 	Load Arg x
-	Load Int 1
+	Load Int 2
-	NotEq Int
+	Gt Num(Int)
 	Unless
 		Load Int 1
 		Yield
@@ -24,40 +38,18 @@ fac:
 	Sub Int
 	Call fac
 	Load Arg x
-	Mul Int
+	Load Int 2
-	Yield
+	Sub Int
-
+	Call fac
-number:
+	Add Int
-	Load Rat 12.0
 
 main:
-	Call number
+	Load Int 24
-	Call to_int
 	Call fac
-	Store Int result
+	Store Int c
-	Load String "The Factorial of "
+	Load String "factorial: "
-	Call number
+	Load Var c
-	Load String " is: "
-	Load Var result
-	Cat Str
-	Cat Str
 	Cat Str
 	Call println
 	Load Int 0
-	Store Int x
-	Loopstart
-	Load Var x
-	Load Int 9
-	Gt Int
-	While
-		Load String ""
-		Load Var x
-		Cat Str
-		Call println
-		Load Var x
-		Load Int 1
-		Add Int
-		Store Int x
-	Load Int 0
-	Yield
 

test.yard

@@ -1,31 +1,18 @@
-@feature(io, conv)
+@feature(io, conv, math)
 @version(100)
 @author(Sven Vogel)
 
--- compute the factorial
+max(a:int, b:int)=int {
--- in a recursive and functional way
+    despite a < b {
-fac(x:int) = int {
+        yield a
-    despite x != 1 {
-        yield 1;
     }
-
+    b
-    yield fac(x - 1) * x
 }
 
-number = rat 12.0	# this is a function without arguments and a braceless body
+# main function
-
-// main function
 main = int {
 
-    result = fac(to_int(number));
+    println("" .. max(3,4));
 
-    println("The Factorial of " .. number() .. " is: " .. result);
+    0
-
-    x:int = 0;
-    until x > 9 {
-        println("" .. x);
-        x = x + 1
-    }
-
-    yield 0;
 }