A bit of work on the parser, schema syntax, compilation/interpretation, and so on

Cargo.toml

@@ -8,6 +8,14 @@ edition = "2021"
 [dependencies]
 anyhow = "1.0.71"
 once_cell = "1.17.1"
+panik-handler = "0.1.0"
 pest = "2.6.0"
 pest_derive = "2.6.0"
 rmp = "0.8.11"
+rmp-serde = "1.1.1"
+serde = "1.0.164"
+serde_derive = "1.0.164"
+
+
+[dev-dependencies]
+pretty_assertions = "1.3.0"

examples/simple.ids

@@ -2,15 +2,6 @@ namespace examples.thing.simple
 
 const AGREEMENT_KEY: string = "agreement_key"
 
-
-@min_chars=0 max_chars=1024
-validator StringBounds {
-    assert_error(
-        value.length > params.max_chars or value.length < params.min_chars,
-        "String {value.name} must be more than {params.min_chars} and less than {params.max_chars}"
-    )
-}
-
 @min_chars=16 max_chars=60
 validator PasswordCheck {
     assert_valid(

src/codegen/rust.rs

@@ -1,10 +1,11 @@
 // Standard Uses
 
 // Local Uses
-use crate::ir::unit::{Protocol, Unit};
+//use crate::ir::unit::{Protocol, Unit};
 
 // External Uses
 
+/*
 fn unit_to_code(unit: Unit) -> String {
     let mut code = String::new();
 
@@ -73,3 +74,4 @@ fn protocol_to_code(protocol: Protocol) -> String {
 
     code.to_owned()
 }
+*/

src/idl/idl.pest

@@ -1,6 +1,8 @@
 // IDL grammar
 schema = _{
-	namespace
+	COMMENT* ~ MULTILINE_COMMENT*
+    ~ WS?
+    ~ namespace
     ~ (
     	COMMENT | import
         | settings | constant
@@ -25,13 +27,12 @@ constant =  {
 }
 
 settings = {
-    WS ~ parameter*
-	~ "settings" ~ WS? ~ id? ~ WS?
+	WS? ~ "settings" ~ WS? ~ id? ~ WS?
     ~ "{" ~ WS? ~ parameter* ~ WS? ~ "}"
 }
 
 enumeration = {
-    WS ~ parameter*
+   	WS? ~ property*
 	~ "enum" ~ WS ~ id ~ WS?
     ~ "{" ~ WS? ~ enum_variant+ ~ WS? ~ "}"
     ~ WS?
@@ -41,7 +42,7 @@ enum_variant = {
 }
 
 validator = {
-	WS ~ parameter*
+   	WS? ~ property*
     ~ "validator" ~ WS ~ id ~ WS?
     ~ "{" ~ WS? ~ function_call* ~ WS? ~ "}"
     ~ WS?
@@ -77,14 +78,15 @@ boolean_operator = {
 }
 
 structure = {
-	WS? ~ parameter*
+    WS? ~ docstring? ~ property*
 	~ "struct" ~ WS ~ id ~ WS?
     ~ "{" ~ WS? ~ (constant | field)+ ~ WS? ~ "}"
     ~ WS?
 }
 field = {
 	WS? ~ property*
-    ~ (index ~ "#")? ~ (WS? ~ requirement)?
+    // ~ (index ~ "#")?
+    ~ (WS? ~ requirement)?
     ~ WS? ~ id ~ WS? ~ ":" ~ WS? ~ kind
     ~ (WS? ~ "=" ~ WS? ~ value)? ~ WS?
 }
@@ -92,7 +94,7 @@ index = @{ digit }
 requirement = { "optional" }
 
 error = {
-    WS? ~ property*
+    WS? ~ docstring? ~ property*
 	~ "error" ~ WS ~ id ~ WS?
     ~ "{" ~ WS?
     ~ (parameter | field)+
@@ -100,19 +102,19 @@ error = {
 }
 
 protocol = {
-    WS? ~ property* ~ WS?
+    WS? ~ docstring? ~ property*
     ~ "protocol" ~ WS ~ id ~ WS?
     ~ "{" ~ WS? ~ function* ~ WS? ~ "}"
 }
 function = {
-	WS? ~ property* ~ WS?
+	WS? ~ property*
     ~ (index ~ WS? ~ "#" ~ WS?)?
     ~ (asynchronous ~ WS?)?
     ~ (direction ~ WS?)?
     ~ "function" ~ WS ~ id ~ WS?
     ~ "(" ~ WS? ~ argument* ~ WS? ~ ")"
     ~ (WS? ~ "->" ~ WS? ~ returns+)?
-    ~ (WS? ~ ":" ~ WS? ~ parameter+)?
+    // ~ (WS? ~ ":" ~ WS? ~ parameter+)?
     ~ (WS? ~ "!" ~ WS? ~ throw+)?
 }
 direction = { "client" | "server" }
@@ -167,8 +169,12 @@ instantiation = {
     ~ "(" ~ domain ~ ")"
 }
 
+docstring = {
+	"///" ~ (!NEWLINE ~ ANY)* ~ NEWLINE
+}
+
 value = {
-	"true" | "false"
+	"true" | "false" | digit
     | string | string_interpolated
     | instantiation
 	| domain | domain_namespaced
@@ -197,5 +203,12 @@ alpha = { 'a'..'z' | 'A'..'Z' }
 digit = { '0'..'9' }
 
 WS = _{ (" " | "\t" | "\n")+ }
-COMMENT = _{ "//" ~ (!NEWLINE ~ ANY)* ~ NEWLINE }
-// MULTILINE_COMMENT  = _{ "/*" ~ (MULTILINE_COMMENT | !"*/" ~ ANY)* ~ "*/" }
+COMMENT = _{
+	!"///" ~
+	"//" ~ (!NEWLINE ~ ANY)* ~ NEWLINE
+}
+MULTILINE_COMMENT = _{
+	"/*"
+    ~ (MULTILINE_COMMENT | !"*/" ~ ANY)*
+    ~ "*/"
+}

src/idl/parser.rs

@@ -1,11 +1,13 @@
 // Standard Uses
 
 // Local Uses
-use crate::ir::new_unit::Unit;
+use crate::ir::new_unit::{Unit, UnitIndex, VUnit, WholeUnit};
+use crate::ir::primitive;
+use crate::ir::primitive::TypeValue;
 
 // External Uses
 use anyhow::Result;
-use pest::iterators::Pair;
+use pest::{iterators::Pair, Parser};
 
 
 #[derive(Parser)]
@@ -13,24 +15,205 @@ use pest::iterators::Pair;
 pub struct IDLParser;
 
 
-/*
-pub fn parse_into_unit(content: &str) -> Result<Vec<Unit>> {
+pub fn from_path(path: &str) -> Result<WholeUnit> {
+    let raw = std::fs::read_to_string(path).unwrap();
+    let vunit = parse_into_unit(raw.clone().as_str()).unwrap();
+    let index = UnitIndex::Index { path: path.to_string(), source: raw };
+
+    Ok((index, vunit))
+}
+
+pub fn parse_into_unit(content: &str) -> Result<VUnit> {
     let pairs = IDLParser::parse(Rule::schema, content)?;
-    let mut units = vec![];
+    let mut unit = vec![];
 
-    for pair in pairs { units.push(parse_inner(pair).unwrap()) }
+    for pair in pairs { unit.push(parse_inner(pair).unwrap()) }
 
-    Ok(units)
+    Ok(unit)
 }
 
 
 #[allow(unused)]
 pub fn parse_inner(pairs: Pair<Rule>) -> Result<Unit> {
     match pairs.as_rule() {
-        Rule::schema {
-
+        /*
+        Rule::schema => {
+            todo!()
         },
+        */
+        Rule::namespace => {
+            Ok(Unit::Namespace(pairs.into_inner().as_str().to_owned()))
+        },
+        Rule::import => {
+            Ok(Unit::Import(pairs.into_inner().as_str().to_owned()))
+        }
+        Rule::constant => {
+            let pairs = pairs.into_inner();
+
+            let mut docstring: Option<String> = None;
+            let mut id: Option<String> = None;
+            let mut kind: Option<TypeValue> = None;
+            let mut default_value: Option<String> = None;
+
+            for pair in pairs {
+                match pair.as_rule() {
+                    Rule::docstring => docstring = Some(pair.as_str().to_owned()),
+                    Rule::id => id = Some(pair.as_str().to_owned()),
+                    Rule::kind => kind = Some(primitive::to_type(pair.as_str())),
+                    Rule::value => default_value = to_value_other(pair),
+                    (r) => panic!("Rule not implemented on 'constant': {:?}", r)
+                }
+            }
+
+            Ok(Unit::Constant {
+                docstring,
+                name: id.ok_or("Id is not present").unwrap(),
+                kind: kind.ok_or("Type is not present").unwrap(),
+                default_value,
+            })
+        },
+        Rule::settings => {
+            let mut pairs = pairs.into_inner();
+
+            let mut docstring: Option<String> = None;
+            let mut name: Option<String> = None;
+            let mut parameters: Vec<Unit> = vec![];
+
+            for pair in pairs {
+                match pair.as_rule() {
+                    Rule::docstring => docstring = Some(pair.as_str().to_owned()),
+                    Rule::id => name = Some(pair.as_str().to_owned()),
+                    Rule::parameter => parameters.push(to_parameter(pair)),
+                    (r) => panic!("Rule not implemented on 'settings': {:?}", r)
+                }
+            }
+
+            Ok(Unit::Settings {
+                docstring,
+                name: name.unwrap(),
+                parameters,
+            })
+        },
+        Rule::enumeration => {
+            let mut pairs = pairs.into_inner();
+
+            let mut docstring: Option<String> = None;
+            let mut name: Option<String> = None;
+            let mut variants: Vec<Unit> = vec![];
+
+            for pair in pairs {
+                match pair.as_rule() {
+                    Rule::docstring => docstring = Some(pair.as_str().to_owned()),
+                    Rule::id => name = Some(pair.as_str().to_owned()),
+                    Rule::enum_variant => {
+                        let mut inner = pair.into_inner();
+                        let name = inner.next().unwrap().as_str().to_string();
+                        let kind = inner.next().map(|s| s.as_str().to_string());
+
+                        variants.push(Unit::EnumVariant {
+                            name, kind,
+                        });
+                    },
+                    (r) => panic!("Rule not implemented on 'enumeration': {:?}", r)
+                }
+            }
+
+            Ok(Unit::Enum {
+                docstring, name: name.unwrap(),
+                variants,
+            })
+        },
+        Rule::structure => {
+            let mut pairs = pairs.into_inner();
+
+            let mut docstring: Option<String> = None;
+            let mut parameters: Vec<Unit> = vec![];
+            let mut name: Option<String> = None;
+            let mut fields: Vec<Unit> = vec![];
+
+            for pair in pairs {
+                match pair.as_rule() {
+                    Rule::docstring => docstring = Some(pair.as_str().to_owned()),
+                    Rule::id => name = Some(pair.as_str().to_owned()),
+                    Rule::parameter => parameters.push(to_parameter(pair)),
+                    Rule::field => fields.push(to_field(pair)),
+                    (r) => panic!("Rule not implemented on 'structure': {:?}", r)
+                }
+            }
+
+            Ok(Unit::Struct {
+                docstring, parameters,
+                name: name.unwrap(), fields: vec![],
+            })
+        }
+        (r) => panic!("Rule not implemented: {:?}", r)
     }
 }
+
+/*
+pub fn to_parameters(mut pairs: Pairs<Rule>) -> Vec<Unit> {
+    let mut params = vec![];
+
+    let t = pairs.as_str();
+    while let Some(pair) = pairs.next() {
+        let temp = pair.as_str();
+
+        params.push(to_parameter(pair.into_inner()));
+    }
+
+    params
+}
 */
 
+pub fn to_parameter(mut pair: Pair<Rule>) -> Unit {
+    let mut pairs = pair.into_inner();
+
+    Unit::Parameter {
+        name: pairs.next().unwrap().as_str().to_string(),
+        default_value: pairs.next().unwrap().as_str().to_string()
+    }
+}
+
+
+pub fn to_value_other(pair: Pair<Rule>) -> Option<String> {
+    let inner = pair.into_inner().next().unwrap();
+
+    match inner.as_rule() {
+        Rule::string => Some(inner.as_str().to_string()),
+        Rule::string_interpolated => Some(inner.as_str().to_string()),
+        Rule::digit => Some(inner.as_str().to_string()),
+        r => panic!("Rule not implemented in 'value': {:?}", r)
+    }
+
+    // "".to_string()
+}
+
+pub fn to_field(pair: Pair<Rule>) -> Unit {
+    let mut pairs = pair.into_inner();
+
+    let mut docstring: Option<String> = None;
+    let mut parameters: Vec<Unit> = vec![];
+    let mut optional: bool = false;
+    let mut name: Option<String> = None;
+    let mut kind: Option<String> = None;
+    let mut default_value: Option<String> = None;
+
+    for pair in pairs {
+        match pair.as_rule() {
+            Rule::docstring => docstring = Some(pair.as_str().to_owned()),
+            Rule::parameter => parameters.push(to_parameter(pair)),
+            Rule::requirement => optional = true,
+            Rule::id => name = Some(pair.as_str().to_owned()),
+            Rule::kind => kind = Some(pair.as_str().to_owned()),
+            Rule::value => default_value = Some(pair.as_str().to_owned()),
+            r => panic!("Rule not implemented in 'field': {:?}", r)
+        }
+    }
+
+    Unit::Field {
+        docstring, parameters,
+        optional,
+        name: name.unwrap(), kind: kind.unwrap(), default_value,
+    }
+}
+

src/idl/pest.rs

@@ -3,6 +3,7 @@
 // Local Uses
 use crate::ir::primitive;
 use crate::ir::primitive::TypeValue;
+
 use crate::ir::unit::{
     Argument, Const, Direction, Enum, EnumVariant,
     Error, Field, Function, Parameter,
@@ -19,7 +20,7 @@ use pest::Parser;
 #[grammar = "idl/idl.pest"]
 pub struct IDLParser;
 
-
+/*
 pub fn parse_into_unit(raw: &str) -> Result<Unit> {
     let parse = IDLParser::parse(Rule::schema, raw)?;
 
@@ -173,9 +174,9 @@ fn parse_inner(record: Pair<Rule>) -> Result<Unit> {
 
     inner
 }
+*/
 
-
-fn to_parameters(mut pairs: Pairs<Rule>) -> Vec<Parameter> {
+pub fn to_parameters(mut pairs: Pairs<Rule>) -> Vec<Parameter> {
     let mut params = vec![];
 
     while let Some(pair) = pairs.next() {
@@ -185,7 +186,7 @@ fn to_parameters(mut pairs: Pairs<Rule>) -> Vec<Parameter> {
     params
 }
 
-fn to_parameter(mut pairs: Pairs<Rule>) -> Parameter {
+pub fn to_parameter(mut pairs: Pairs<Rule>) -> Parameter {
     Parameter {
         id: pairs.next().unwrap().as_str().to_owned(),
         value: pairs.next().unwrap().as_str().as_bytes().to_vec()

src/ir.rs

@@ -1,6 +1,6 @@
 // Relative Modules
 mod sanitizer;
-mod context;
+pub mod context;
 mod serialization;
 pub mod unit;
 pub mod new_unit;

src/ir/compiler.rs

@@ -1,7 +1,43 @@
 // Standard Uses
 
 // Local Uses
+use crate::ir::context::Context;
+use crate::ir::new_unit::{Unit, VUnit};
 
 // External Uses
+use anyhow::{Result, bail};
 
 
+pub fn interpret_unit(context: Context) -> Result<VUnit> {
+    let interpreted = vec![];
+
+    for unit in &context.main.1 {
+        match unit {
+            // Unit::Tag(_) => {}
+            Unit::Namespace(n) => {}
+            Unit::Import(i) => {
+                let relative_unit = context.find_unit(i)?;
+
+                bail!(format!("Could not find in namespace {}", i))
+            }
+            /*
+            Unit::Constant { .. } => {}
+            Unit::Enum { .. } => {}
+            Unit::EnumVariant { .. } => {}
+            Unit::Property { .. } => {}
+            Unit::Parameter { .. } => {}
+            Unit::Settings { .. } => {}
+            Unit::Struct { .. } => {}
+            Unit::Protocol { .. } => {}
+            Unit::Function { .. } => {}
+            Unit::Error { .. } => {}
+            Unit::Validator { .. } => {}
+            Unit::Field { .. } => {}
+            */
+            r => panic!("Left to impl: {:?}", r)
+        }
+    }
+
+    Ok(interpreted)
+}
+

src/ir/context.rs

@@ -3,22 +3,34 @@
 // Local Uses
 use crate::ir::unit::Unit;
 use crate::ir::serialization::Origin;
+use crate::ir::new_unit::{UnitIndex, VUnit, WholeUnit};
 
 // External Uses
+use anyhow::{Result, bail};
 
 
 pub struct Context {
-    pub units: Vec<(Origin, Unit)>
+    pub main: WholeUnit,
+    pub relative_units: Vec<WholeUnit>
 }
 
 #[allow(unused)]
 impl Context {
-    fn add_unit(self, origin: Origin, unit: Unit) {
+    pub fn with_main(main: WholeUnit) -> Self{
+        Context { main, relative_units: vec![] }
+    }
+
+    pub(crate) fn add_relative_unit(mut self, whole_unit: WholeUnit) {
+        self.relative_units.push(whole_unit)
+    }
+
+    pub(crate) fn sanitize_units(self) {
         todo!()
     }
 
-    fn sanitize_units(self) {
-
+    pub(crate) fn find_unit(&self, import: &str) -> Result<&WholeUnit> {
+        
+        todo!()
     }
 }
 

src/ir/new_unit.rs

@@ -1,19 +1,20 @@
 // Standard Uses
 
 // Local Uses
-use crate::ir::primitive::{Primitive, TypeValue};
+use crate::ir::primitive::TypeValue;
 
 // External Uses
 
 
 pub type OrderIndex = u16;
 
-#[derive(Debug, Eq, PartialEq)]
+#[derive(Debug, Eq, PartialEq, Deserialize, Serialize)]
 pub enum Direction { Client, Server, Both }
 
 
-#[derive(Debug, Eq, PartialEq)]
+#[derive(Debug, Eq, PartialEq, Deserialize, Serialize)]
 pub enum Unit {
+    /*
     Schema {
         tag: String,
         namespace: String,
@@ -26,34 +27,53 @@ pub enum Unit {
         errors: Vec<Unit>,
         protocols: Vec<Unit>
     },
+    */
+    Tag(String),
+    Namespace(String),
+    Import(String),
     Constant {
+        docstring: Option<String>,
         name: String,
-        kind: String,
-        default_value: String,
+        kind: TypeValue, // String
+        default_value: Option<String>,
     },
     Enum {
+        docstring: Option<String>,
         name: String,
+        variants: Vec<Unit>
+    },
+    EnumVariant {
+        name: String,
+        kind: Option<String>
     },
     Property {
         name: String,
         values: Vec<String>
     },
+    Parameter {
+        name: String,
+        default_value: String
+    },
     Settings {
+        docstring: Option<String>,
         name: String,
         parameters: Vec<Unit>,
     },
     Struct {
-        name: String,
+        docstring: Option<String>,
         parameters: Vec<Unit>,
-        functions: Vec<Unit>
+        name: String,
+        fields: Vec<Unit>,
     },
     Protocol {
-        name: String,
+        docstring: String,
         parameters: Vec<Unit>,
+        name: String,
         functions: Vec<Unit>
     },
     Function {
-        index: OrderIndex,
+        docstring: String,
+        // index: OrderIndex,
         name: String,
         synchronous: bool,
         direction: Direction,
@@ -62,17 +82,40 @@ pub enum Unit {
         throws: Vec<Unit>
     },
     Error {
-        name: String,
+        docstring: String,
         parameters: Vec<Unit>,
+        name: String,
         fields: Vec<Unit>
     },
+    Validator {
+        docstring: String,
+        parameters: Vec<Unit>,
+        name: String,
+        message: String,
+    },
     Field {
-        index: OrderIndex,
-
+        docstring: Option<String>,
+        parameters: Vec<Unit>,
+        // index: OrderIndex,
+        optional: bool,
+        name: String,
+        kind: String,
+        default_value: Option<String>,
     }
 }
 
+#[derive(PartialEq, Debug)]
 pub enum UnitIndex {
-    Source(String),
-
+    Index {
+        path: String,
+        source: String,
+        // nodes: Vec<Unit>
+    },
+    Node {
+        index: u32,
+        start_position: u32, length: u32
+    }
 }
+
+pub type VUnit = Vec<Unit>;
+pub type WholeUnit = (UnitIndex, VUnit);

src/ir/primitive.rs

@@ -4,7 +4,6 @@
 
 // External Uses
 
-
 #[derive(Debug, Eq, PartialEq)]
 #[repr(u8)]
 pub enum Primitive {
@@ -27,7 +26,7 @@ pub enum Primitive {
     Namespaced(String)
 }
 
-#[derive(Debug, Eq, PartialEq)]
+#[derive(Debug, Eq, PartialEq, Deserialize, Serialize)]
 #[repr(u8)]
 pub enum TypeValue {
     U8 = 0, U16, U32, U64, U128,
@@ -93,4 +92,3 @@ fn to_value(type_: &TypeValue, value: &str) -> Vec<u8> {
         TypeValue::Namespaced => Vec::from([value.parse::<u8>().unwrap()]),
     }
 }
-

src/ir/sanitizer.rs

@@ -8,7 +8,5 @@ use crate::ir::context::Context;
 
 #[allow(unused)]
 fn sanitize_context_units(context: &Context) {
-    for (_, unit) in &context.units {
-        
-    }
+    todo!()
 }

src/lib.rs

@@ -2,8 +2,13 @@
 extern crate pest;
 #[macro_use]
 extern crate pest_derive;
+extern crate serde;
+#[macro_use]
+extern crate serde_derive;
+extern crate rmp_serde as rmps;
 
 // Relative Modules
 pub mod ir;
 pub mod codegen;
 pub mod idl;
+pub mod stdlib;

src/stdlib/lang_items.rs

@@ -0,0 +1,14 @@
+// Standard Uses
+
+// Local Uses
+use crate::ir::new_unit::Unit;
+use crate::idl::parser::from_path;
+
+// External Uses
+
+
+/*
+pub const LANGUAGE_ITEMS: [Vec<Unit>] = *[
+    from_path("src/stdlib/validators/string_bounds.ids").unwrap()
+];
+*/

src/stdlib/mod.rs

@@ -0,0 +1,10 @@
+// Relative Modules
+pub mod lang_items;
+pub mod validators;
+
+
+// Standard Uses
+
+// Local Uses
+
+// External Uses

src/stdlib/validators/string_bounds.ids

@@ -0,0 +1,12 @@
+namespace std::validators::StringBounds
+
+/// Checks if a string length is between a minimum and a maximum
+/// @min_chars: Minimum length of the string
+/// @max_chars: Maximum length of the string
+@min_chars=0 max_chars=1024
+validator StringBounds {
+    assert_equal(
+        value.length > params.max_chars or value.length < params.min_chars,
+        "String {value.name} must be more than {params.min_chars} and less than {params.max_chars}"
+    )
+}

tests/idl/mod.rs

@@ -1 +1 @@
-mod pest;
+mod unit;

tests/idl/pest.rs

@@ -1,26 +0,0 @@
-// Standard Uses
-
-// Local Uses
-
-// External Uses
-use comline::idl;
-use comline::idl::constants::SCHEMA_EXTENSION;
-use comline::ir::unit::Unit;
-
-
-#[test]
-fn from_raw_to_unit() {
-    let raw = std::fs::read_to_string(
-        format!("tests/idl/simple.{}", SCHEMA_EXTENSION)
-    ).unwrap();
-    let unit = idl::pest::parse_into_unit(raw.as_str()).unwrap();
-
-    assert_eq!(
-        unit, Unit::Items(vec![
-            Unit::Namespace("".to_string()),
-
-            ]
-        )
-    )
-}
-

tests/idl/simple.ids

@@ -1,27 +1,39 @@
+// Simple Schema
 namespace tests.idl.simple
 
-const POWER: u8 = 10
-const DEFAULT_NAME: str = f"flower {POWER}"
+import std::validators::StringBounds
+
+const POWER: u8 = 1
+const DEFAULT_NAME: str = f"flower power: {POWER}"
 
 settings Test {
+    forbid_indexing=True
     forbid_optional_indexing=True
 }
 
+enum EncryptionMode {
+  None
+  Encrypt
+}
+
+/// A message that can be sent through the mail protocol
 struct Message {
     1# name: str = DEFAULT_NAME
+    2# encryption_mode: EncryptionMode = default
 
     @validators=[StringBounds(min_chars=3 max_chars=12)]
     2# optional recipient: str = "bee"
 }
 
+/// Throw when sending a message to a missing recipient
 error RecipientNotFoundError {
-    message = f"Recipient with name {self.recipient} not found"
+    message = "Recipient with name {self.recipient} not found"
 
     @validators=[StringBounds(min_chars=8 max_chars=16)]
     1# recipient: str
 }
 
-
+/// Mail API for receiving and sending emails
 @provider=Any
 protocol Mail {
 

tests/idl/unit.rs

@@ -0,0 +1,72 @@
+// Standard Uses
+
+// Local Uses
+
+// External Uses
+use comline::{idl, ir};
+use comline::idl::constants::SCHEMA_EXTENSION;
+use comline::ir::new_unit::Unit;
+use panik_handler;
+use pretty_assertions::{assert_eq, assert_ne};
+use comline::ir::compiler;
+use comline::ir::primitive::TypeValue;
+
+
+#[test]
+fn from_raw_to_unit() {
+    panik_handler::install();
+
+    let raw = std::fs::read_to_string(
+        format!("tests/idl/simple.{}", SCHEMA_EXTENSION)
+    ).unwrap();
+    let unit = idl::parser::parse_into_unit(raw.as_str()).unwrap();
+
+    assert_eq!(
+        unit, vec![
+            Unit::Namespace("tests.idl.simple".to_string()),
+            Unit::Import("std::validators::StringBounds".to_string()),
+            Unit::Constant {
+                docstring: None, name: "POWER".to_string(),
+                kind: TypeValue::U8, default_value: Some("1".to_string()),
+            },
+            Unit::Constant {
+                docstring: None, name: "DEFAULT_NAME".to_string(),
+                kind: TypeValue::String, default_value: Some("f\"flower power: {POWER}\"".to_string()),
+            },
+            Unit::Settings {
+                docstring: None, name: "Test".to_string(),
+                parameters: vec![
+                    Unit::Parameter {
+                        name: "forbid_indexing".to_string(),
+                        default_value: "True".to_string(),
+                    },
+                    Unit::Parameter {
+                        name: "forbid_optional_indexing".to_string(),
+                        default_value: "True".to_string(),
+                    }
+                ],
+            },
+            Unit::Enum {
+                docstring: None, name: "EncryptionMode".to_string(),
+                variants: vec![
+                    Unit::EnumVariant { name: "None".to_string(), kind: None },
+                    Unit::EnumVariant { name: "Encrypt".to_string(), kind: None }
+                ]
+            }
+        ]
+    )
+}
+
+
+#[test]
+fn compile_unit() {
+    let unit = idl::parser::from_path(
+        format!("tests/idl/simple.{}", SCHEMA_EXTENSION).as_str()
+    ).unwrap();
+
+    let context = ir::context::Context::with_main(unit);
+
+    let interpreted = compiler::interpret_unit(context);
+
+    println!("{:?}", interpreted);
+}