safety commit because i want to try cargo fix

mers/src/parse/parse.rs

@@ -6,8 +6,8 @@ use crate::{
         code_macro::MacroError,
         code_parsed::*,
         code_runnable::RScript,
-        global_info::GSInfo,
-        to_runnable::{self, GInfo, ToRunnableError},
+        global_info::{GlobalScriptInfo},
+        to_runnable::{self, ToRunnableError},
         val_data::VDataEnum,
         val_type::{VSingleType, VType},
     },
@@ -74,7 +74,7 @@ pub const PARSE_VERSION: u64 = 0;
 
 /// executes the 4 parse_steps in order: lib_paths => interpret => libs_load => compile
 pub fn parse(file: &mut File) -> Result<RScript, ScriptError> {
-    let mut ginfo = GInfo::default();
+    let mut ginfo = GlobalScriptInfo::default();
     let libs = parse_step_lib_paths(file)?;
     let func = parse_step_interpret(file)?;
     ginfo.libs = parse_step_libs_load(libs, &mut ginfo)?;
@@ -135,7 +135,7 @@ impl std::fmt::Display for UnableToLoadLibrary {
 }
 pub fn parse_step_libs_load(
     lib_cmds: Vec<Command>,
-    ginfo: &mut GInfo,
+    ginfo: &mut GlobalScriptInfo,
 ) -> Result<Vec<libs::Lib>, UnableToLoadLibrary> {
     let mut libs = vec![];
     for cmd in lib_cmds {
@@ -153,7 +153,7 @@ pub fn parse_step_libs_load(
     Ok(libs)
 }
 
-pub fn parse_step_compile(main_func: SFunction, ginfo: GInfo) -> Result<RScript, ToRunnableError> {
+pub fn parse_step_compile(main_func: SFunction, ginfo: GlobalScriptInfo) -> Result<RScript, ToRunnableError> {
     to_runnable::to_runnable(main_func, ginfo)
 }
 
@@ -177,7 +177,7 @@ pub struct ParseError {
         String,
         Option<(super::file::FilePosition, Option<super::file::FilePosition>)>,
     )>,
-    info: Option<GSInfo>,
+    info: Option<GlobalScriptInfo>,
 }
 impl ParseError {
     pub fn fmt_custom(
@@ -246,7 +246,7 @@ impl ParseErrors {
     fn fmtgs(
         &self,
         f: &mut std::fmt::Formatter,
-        info: Option<&GSInfo>,
+        info: Option<&GlobalScriptInfo>,
         file: Option<&super::file::File>,
     ) -> std::fmt::Result {
         match self {
@@ -1150,15 +1150,16 @@ pub mod implementation {
                         "int" => VSingleType::Int,
                         "float" => VSingleType::Float,
                         "string" => VSingleType::String,
-                        _ => {
-                            return Err(ParseError {
-                                err: ParseErrors::InvalidType(name.trim().to_string()),
-                                location: err_start_of_single_type,
-                                location_end: Some(*file.get_pos()),
-                                context: vec![],
-                                info: None,
-                            });
-                        }
+                        custom => VSingleType::CustomTypeS(custom.to_owned()),
+                        // _ => {
+                        //     return Err(ParseError {
+                        //         err: ParseErrors::InvalidType(name.trim().to_string()),
+                        //         location: err_start_of_single_type,
+                        //         location_end: Some(*file.get_pos()),
+                        //         context: vec![],
+                        //         info: None,
+                        //     });
+                        // }
                     }
                 }
                 None => {

mers/src/script/builtins.rs

@@ -8,7 +8,7 @@ use crate::libs;
 
 use super::{
     code_runnable::RStatement,
-    global_info::GSInfo,
+    global_info::{GlobalScriptInfo, GSInfo},
     val_data::{thread::VDataThreadEnum, VData, VDataEnum},
     val_type::{VSingleType, VType},
 };
@@ -148,7 +148,7 @@ impl BuiltinFunction {
             _ => return None,
         })
     }
-    pub fn can_take(&self, input: &Vec<VType>) -> bool {
+    pub fn can_take(&self, input: &Vec<VType>, info: &GlobalScriptInfo) -> bool {
         match self {
             Self::Assume1 => {
                 if input.len() >= 1 {
@@ -172,7 +172,7 @@ impl BuiltinFunction {
                     }
                     if input.len() >= 2 {
                         if input.len() == 2 {
-                            input[1].fits_in(&VSingleType::String.to()).is_empty()
+                            input[1].fits_in(&VSingleType::String.to(), info).is_empty()
                         } else {
                             false
                         }
@@ -203,7 +203,7 @@ impl BuiltinFunction {
                     }
                     if input.len() >= 2 {
                         if input.len() == 2 {
-                            input[1].fits_in(&VSingleType::String.to()).is_empty()
+                            input[1].fits_in(&VSingleType::String.to(), info).is_empty()
                         } else {
                             false
                         }
@@ -219,7 +219,7 @@ impl BuiltinFunction {
             Self::Clone => input.len() == 1 && matches!(input[0].is_reference(), Some(true)),
             Self::Print | Self::Println => {
                 if input.len() == 1 {
-                    input[0].fits_in(&VSingleType::String.to()).is_empty()
+                    input[0].fits_in(&VSingleType::String.to(), info).is_empty()
                 } else {
                     false
                 }
@@ -230,11 +230,11 @@ impl BuiltinFunction {
                 !input.is_empty()
                     && input
                         .iter()
-                        .all(|v| v.fits_in(&VSingleType::String.to()).is_empty())
+                        .all(|v| v.fits_in(&VSingleType::String.to(), info).is_empty())
             }
             Self::StdinReadLine => input.is_empty(),
             Self::ParseInt | Self::ParseFloat => {
-                input.len() == 1 && input[0].fits_in(&VSingleType::String.to()).is_empty()
+                input.len() == 1 && input[0].fits_in(&VSingleType::String.to(), info).is_empty()
             }
             Self::Run | Self::Thread => {
                 if input.len() >= 1 {
@@ -364,7 +364,7 @@ impl BuiltinFunction {
                     let (vec, el) = (&input[0], &input[1]);
                     // if vec.is_reference().is_some_and(|v| v) { // unstable
                     if let Some(true) = vec.is_reference() {
-                        if let Some(t) = vec.get_any() {
+                        if let Some(t) = vec.get_any(info) {
                             el.fits_in(&t).is_empty()
                         } else {
                             false
@@ -380,7 +380,7 @@ impl BuiltinFunction {
                 if input.len() == 3 {
                     let (vec, el) = (&input[0], &input[1]);
                     if let Some(true) = vec.is_reference() {
-                        if let Some(t) = vec.get_any() {
+                        if let Some(t) = vec.get_any(info) {
                             el.fits_in(&t).is_empty()
                         } else {
                             false
@@ -397,7 +397,7 @@ impl BuiltinFunction {
                     let vec = &input[0];
                     if let Some(true) = vec.is_reference() {
                         // TODO! this also returns true for tuples. what should we do for tuples? should pop return (first_val rest_of_tuple) and not take a reference?
-                        if let Some(_) = vec.get_any() {
+                        if let Some(_) = vec.get_any(info) {
                             true
                         } else {
                             false
@@ -414,7 +414,7 @@ impl BuiltinFunction {
                     let (vec, index) = (&input[0], &input[1]);
                     if let Some(true) = vec.is_reference() {
                         // TODO! same issue as in pop
-                        if let Some(_) = vec.get_any() {
+                        if let Some(_) = vec.get_any(info) {
                             if index.fits_in(&VSingleType::Int.to()).is_empty() {
                                 true
                             } else {
@@ -477,7 +477,7 @@ impl BuiltinFunction {
         }
     }
     /// for invalid inputs, may panic
-    pub fn returns(&self, input: Vec<VType>) -> VType {
+    pub fn returns(&self, input: Vec<VType>, info: &GlobalScriptInfo) -> VType {
         match self {
             Self::Assume1 => {
                 let mut out = VType { types: vec![] };
@@ -569,7 +569,7 @@ impl BuiltinFunction {
                         types: vec![
                             VSingleType::Tuple(vec![]),
                             VSingleType::Tuple(vec![v
-                                .get_any()
+                                .get_any(info)
                                 .expect("cannot use get on this type")]),
                         ],
                     }
@@ -783,7 +783,7 @@ impl BuiltinFunction {
                 let val = args[0].run(vars, info);
                 println!(
                     "{} :: {} :: {}",
-                    args[0].out().gsi(info.clone()),
+                    args[0].out(info).gsi(info.clone()),
                     val.out().gsi(info.clone()),
                     val.gsi(info.clone())
                 );

mers/src/script/code_parsed.rs

@@ -1,6 +1,6 @@
 use std::fmt::{self, Display, Formatter, Pointer};
 
-use super::{code_macro::Macro, global_info::GSInfo, val_data::VData, val_type::VType};
+use super::{code_macro::Macro, global_info::GlobalScriptInfo, val_data::VData, val_type::VType};
 
 pub enum SStatementEnum {
     Value(VData),
@@ -78,7 +78,7 @@ impl SFunction {
 //
 
 impl SStatementEnum {
-    pub fn fmtgs(&self, f: &mut Formatter, info: Option<&GSInfo>) -> fmt::Result {
+    pub fn fmtgs(&self, f: &mut Formatter, info: Option<&GlobalScriptInfo>) -> fmt::Result {
         match self {
             Self::Value(v) => v.fmtgs(f, info),
             Self::Tuple(v) => {
@@ -186,7 +186,7 @@ impl Display for SStatementEnum {
 }
 
 impl SStatement {
-    pub fn fmtgs(&self, f: &mut Formatter, info: Option<&GSInfo>) -> fmt::Result {
+    pub fn fmtgs(&self, f: &mut Formatter, info: Option<&GlobalScriptInfo>) -> fmt::Result {
         if let Some((opt, derefs)) = &self.output_to {
             if let Some(forced_type) = &self.force_output_type {
                 write!(f, "{}{}::", "*".repeat(*derefs), opt)?;
@@ -206,7 +206,7 @@ impl Display for SStatement {
 }
 
 impl SFunction {
-    pub fn fmtgs(&self, f: &mut Formatter, info: Option<&GSInfo>) -> fmt::Result {
+    pub fn fmtgs(&self, f: &mut Formatter, info: Option<&GlobalScriptInfo>) -> fmt::Result {
         write!(f, "(")?;
         for (i, (name, t)) in self.inputs.iter().enumerate() {
             if i > 0 {
@@ -222,7 +222,7 @@ impl SFunction {
 }
 
 impl SBlock {
-    pub fn fmtgs(&self, f: &mut Formatter, info: Option<&GSInfo>) -> fmt::Result {
+    pub fn fmtgs(&self, f: &mut Formatter, info: Option<&GlobalScriptInfo>) -> fmt::Result {
         match self.statements.len() {
             0 => write!(f, "{{}}"),
             1 => self.statements[0].fmtgs(f, info),

mers/src/script/code_runnable.rs

@@ -2,7 +2,7 @@ use std::sync::{Arc, Mutex};
 
 use super::{
     builtins::BuiltinFunction,
-    global_info::GSInfo,
+    global_info::{GlobalScriptInfo, GSInfo},
     to_runnable::ToRunnableError,
     val_data::{VData, VDataEnum},
     val_type::{VSingleType, VType},
@@ -29,9 +29,9 @@ impl RBlock {
             VDataEnum::Tuple(vec![]).to()
         }
     }
-    pub fn out(&self) -> VType {
+    pub fn out(&self, info: &GlobalScriptInfo) -> VType {
         if let Some(last) = self.statements.last() {
-            last.out()
+            last.out(info)
         } else {
             VType {
                 types: vec![VSingleType::Tuple(vec![])],
@@ -76,8 +76,8 @@ impl RFunction {
         }
         out
     }
-    pub fn out_all(&self) -> VType {
-        self.block.out()
+    pub fn out_all(&self, info: &GlobalScriptInfo) -> VType {
+        self.block.out(info)
     }
     pub fn in_types(&self) -> &Vec<VType> {
         &self.input_types
@@ -109,7 +109,7 @@ impl RStatement {
             out
         }
     }
-    pub fn out(&self) -> VType {
+    pub fn out(&self, info: &GlobalScriptInfo) -> VType {
         // `a = b` evaluates to []
         if self.output_to.is_some() {
             return VType {
@@ -119,7 +119,7 @@ impl RStatement {
         if let Some(t) = &self.force_output_type {
             return t.clone();
         }
-        self.statement.out()
+        self.statement.out(info)
     }
 }
 
@@ -283,14 +283,14 @@ impl RStatementEnum {
             Self::EnumVariant(e, v) => VDataEnum::EnumVariant(*e, Box::new(v.run(vars, info))).to(),
         }
     }
-    pub fn out(&self) -> VType {
+    pub fn out(&self, info: &GlobalScriptInfo) -> VType {
         match self {
             Self::Value(v) => v.out(),
-            Self::Tuple(v) => VSingleType::Tuple(v.iter().map(|v| v.out()).collect()).into(),
+            Self::Tuple(v) => VSingleType::Tuple(v.iter().map(|v| v.out(info)).collect()).into(),
             Self::List(v) => VSingleType::List({
                 let mut types = VType { types: vec![] };
                 for t in v {
-                    types = types | t.out();
+                    types = types | t.out(info);
                 }
                 types
             })
@@ -308,21 +308,21 @@ impl RStatementEnum {
                     t.clone()
                 }
             }
-            Self::FunctionCall(f, args) => f.out_vt(&args.iter().map(|v| v.out()).collect()),
+            Self::FunctionCall(f, args) => f.out_vt(&args.iter().map(|v| v.out(info)).collect()),
             Self::LibFunction(.., out) => out.clone(),
-            Self::Block(b) => b.out(),
+            Self::Block(b) => b.out(info),
             Self::If(_, a, b) => {
                 if let Some(b) = b {
-                    a.out() | b.out()
+                    a.out(info) | b.out(info)
                 } else {
-                    a.out() | VSingleType::Tuple(vec![]).to()
+                    a.out(info) | VSingleType::Tuple(vec![]).to()
                 }
             }
-            Self::Loop(c) => c.out().matches().1,
-            Self::For(_, _, b) => VSingleType::Tuple(vec![]).to() | b.out().matches().1,
-            Self::BuiltinFunction(f, args) => f.returns(args.iter().map(|rs| rs.out()).collect()),
+            Self::Loop(c) => c.out(info).matches().1,
+            Self::For(_, _, b) => VSingleType::Tuple(vec![]).to() | b.out(info).matches().1,
+            Self::BuiltinFunction(f, args) => f.returns(args.iter().map(|rs| rs.out(info)).collect(), info),
             Self::Switch(switch_on, cases) => {
-                let switch_on = switch_on.out().types;
+                let switch_on = switch_on.out(info).types;
                 let mut might_return_empty = switch_on.is_empty();
                 let mut out = VType { types: vec![] }; // if nothing is executed
                 for switch_on in switch_on {
@@ -330,7 +330,7 @@ impl RStatementEnum {
                     'search: {
                         for (on_type, case) in cases.iter() {
                             if switch_on.fits_in(&on_type).is_empty() {
-                                out = out | case.out();
+                                out = out | case.out(info);
                                 break 'search;
                             }
                         }
@@ -345,12 +345,12 @@ impl RStatementEnum {
             Self::Match(_, cases) => {
                 let mut out = VSingleType::Tuple(vec![]).to();
                 for case in cases {
-                    out = out | case.1.out();
+                    out = out | case.1.out(info);
                 }
                 out
             }
-            Self::IndexFixed(st, i) => st.out().get(*i).unwrap(),
-            Self::EnumVariant(e, v) => VSingleType::EnumVariant(*e, v.out()).to(),
+            Self::IndexFixed(st, i) => st.out(info).get(*i, info).unwrap(),
+            Self::EnumVariant(e, v) => VSingleType::EnumVariant(*e, v.out(info)).to(),
         }
     }
     pub fn to(self) -> RStatement {
@@ -364,18 +364,17 @@ impl RStatementEnum {
 
 pub struct RScript {
     main: RFunction,
-    vars: usize,
     info: GSInfo,
 }
 impl RScript {
-    pub fn new(main: RFunction, vars: usize, info: GSInfo) -> Result<Self, ToRunnableError> {
+    pub fn new(main: RFunction, info: GSInfo) -> Result<Self, ToRunnableError> {
         if main.inputs.len() != 1 {
             return Err(ToRunnableError::MainWrongInput);
         }
-        Ok(Self { main, vars, info })
+        Ok(Self { main, info: info })
     }
     pub fn run(&self, args: Vec<String>) -> VData {
-        let mut vars = Vec::with_capacity(self.vars);
+        let mut vars = Vec::with_capacity(self.info.vars);
         vars.push(am(VDataEnum::List(
             VSingleType::String.into(),
             args.into_iter()
@@ -383,7 +382,7 @@ impl RScript {
                 .collect(),
         )
         .to()));
-        for _i in 1..self.vars {
+        for _i in 1..self.info.vars {
             vars.push(am(VDataEnum::Tuple(vec![]).to()));
         }
         self.main.run(&vars, &self.info)

mers/src/script/global_info.rs

@@ -2,14 +2,46 @@ use std::{collections::HashMap, sync::Arc};
 
 use crate::libs;
 
+use super::{val_type::VType, builtins};
+
 pub type GSInfo = Arc<GlobalScriptInfo>;
-// pub type GSMInfo = Arc<Mutex<GlobalScriptInfo>>;
+
 pub struct GlobalScriptInfo {
+    pub vars: usize,
+
     pub libs: Vec<libs::Lib>,
-    pub enums: HashMap<String, usize>,
+    pub lib_fns: HashMap<String, (usize, usize)>,
+
+    pub enum_variants: HashMap<String, usize>,
+
+    pub custom_type_names: HashMap<String, usize>,
+    pub custom_types: Vec<VType>,
 }
+
 impl GlobalScriptInfo {
     pub fn to_arc(self) -> GSInfo {
         Arc::new(self)
     }
 }
+
+impl Default for GlobalScriptInfo {
+    fn default() -> Self {
+        Self {
+            vars: 0,
+            libs: vec![],
+            lib_fns: HashMap::new(),
+            enum_variants: Self::default_enum_variants(),
+            custom_type_names: HashMap::new(),
+            custom_types: vec![],
+        }
+    }
+}
+impl GlobalScriptInfo {
+    pub fn default_enum_variants() -> HashMap<String, usize> {
+        builtins::EVS
+            .iter()
+            .enumerate()
+            .map(|(i, v)| (v.to_string(), i))
+            .collect()
+    }
+}

mers/src/script/to_runnable.rs

@@ -97,46 +97,6 @@ impl Display for ToRunnableError {
     }
 }
 
-// Global, shared between all
-pub struct GInfo {
-    vars: usize,
-    pub libs: Vec<libs::Lib>,
-    pub lib_fns: HashMap<String, (usize, usize)>,
-    pub enum_variants: HashMap<String, usize>,
-}
-impl Default for GInfo {
-    fn default() -> Self {
-        Self {
-            vars: 0,
-            libs: vec![],
-            lib_fns: HashMap::new(),
-            enum_variants: Self::default_enum_variants(),
-        }
-    }
-}
-impl GInfo {
-    pub fn default_enum_variants() -> HashMap<String, usize> {
-        builtins::EVS
-            .iter()
-            .enumerate()
-            .map(|(i, v)| (v.to_string(), i))
-            .collect()
-    }
-    pub fn new(libs: Vec<libs::Lib>, enum_variants: HashMap<String, usize>) -> Self {
-        let mut lib_fns = HashMap::new();
-        for (libid, lib) in libs.iter().enumerate() {
-            for (fnid, (name, ..)) in lib.registered_fns.iter().enumerate() {
-                lib_fns.insert(name.to_string(), (libid, fnid));
-            }
-        }
-        Self {
-            vars: 0,
-            libs,
-            lib_fns,
-            enum_variants,
-        }
-    }
-}
 // Local, used to keep local variables separated
 #[derive(Clone)]
 struct LInfo {
@@ -144,7 +104,7 @@ struct LInfo {
     fns: HashMap<String, Arc<RFunction>>,
 }
 
-pub fn to_runnable(s: SFunction, mut ginfo: GInfo) -> Result<RScript, ToRunnableError> {
+pub fn to_runnable(s: SFunction, mut ginfo: GlobalScriptInfo) -> Result<RScript, ToRunnableError> {
     if s.inputs.len() != 1 || s.inputs[0].0 != "args" {
         return Err(ToRunnableError::MainWrongInput);
     }
@@ -166,19 +126,14 @@ pub fn to_runnable(s: SFunction, mut ginfo: GInfo) -> Result<RScript, ToRunnable
     )?;
     Ok(RScript::new(
         func,
-        ginfo.vars,
-        GlobalScriptInfo {
-            libs: ginfo.libs,
-            enums: ginfo.enum_variants,
-        }
-        .to_arc(),
+        ginfo.to_arc(),
     )?)
 }
 
 // go over every possible known-type input for the given function, returning all possible RFunctions.
 fn get_all_functions(
     s: &SFunction,
-    ginfo: &mut GInfo,
+    ginfo: &mut GlobalScriptInfo,
     linfo: &mut LInfo,
     input_vars: &Vec<usize>,
     inputs: &mut Vec<VSingleType>,
@@ -197,13 +152,13 @@ fn get_all_functions(
         for (varid, vartype) in s.inputs.iter().zip(inputs.iter()) {
             linfo.vars.get_mut(&varid.0).unwrap().1 = vartype.clone().into();
         }
-        out.push((inputs.clone(), block(&s.block, ginfo, linfo.clone())?.out()));
+        out.push((inputs.clone(), block(&s.block, ginfo, linfo.clone())?.out(ginfo)));
         Ok(())
     }
 }
 fn function(
     s: &SFunction,
-    ginfo: &mut GInfo,
+    ginfo: &mut GlobalScriptInfo,
     mut linfo: LInfo,
 ) -> Result<RFunction, ToRunnableError> {
     let mut input_vars = vec![];
@@ -237,7 +192,7 @@ fn function(
     })
 }
 
-fn block(s: &SBlock, ginfo: &mut GInfo, mut linfo: LInfo) -> Result<RBlock, ToRunnableError> {
+fn block(s: &SBlock, ginfo: &mut GlobalScriptInfo, mut linfo: LInfo) -> Result<RBlock, ToRunnableError> {
     let mut statements = Vec::new();
     for st in &s.statements {
         statements.push(statement(st, ginfo, &mut linfo)?);
@@ -245,12 +200,12 @@ fn block(s: &SBlock, ginfo: &mut GInfo, mut linfo: LInfo) -> Result<RBlock, ToRu
     Ok(RBlock { statements })
 }
 
-fn stypes(t: &mut VType, ginfo: &mut GInfo) {
+fn stypes(t: &mut VType, ginfo: &mut GlobalScriptInfo) {
     for t in &mut t.types {
         stype(t, ginfo);
     }
 }
-fn stype(t: &mut VSingleType, ginfo: &mut GInfo) {
+fn stype(t: &mut VSingleType, ginfo: &mut GlobalScriptInfo) {
     match t {
         VSingleType::Tuple(v) => {
             for t in v {
@@ -279,7 +234,7 @@ fn stype(t: &mut VSingleType, ginfo: &mut GInfo) {
 }
 fn statement(
     s: &SStatement,
-    ginfo: &mut GInfo,
+    ginfo: &mut GlobalScriptInfo,
     linfo: &mut LInfo,
 ) -> Result<RStatement, ToRunnableError> {
     let mut statement = match &*s.statement {
@@ -317,7 +272,7 @@ fn statement(
                         ));
                     }
                     for (i, rarg) in rargs.iter().enumerate() {
-                        let rarg = rarg.out();
+                        let rarg = rarg.out(ginfo);
                         let out = rarg.fits_in(&func.input_types[i]);
                         if !out.is_empty() {
                             return Err(ToRunnableError::InvalidType {
@@ -331,8 +286,8 @@ fn statement(
                 } else {
                     // TODO: type-checking for builtins
                     if let Some(builtin) = BuiltinFunction::get(v) {
-                        let arg_types = rargs.iter().map(|v| v.out()).collect();
-                        if builtin.can_take(&arg_types) {
+                        let arg_types = rargs.iter().map(|v| v.out(ginfo)).collect();
+                        if builtin.can_take(&arg_types, ginfo) {
                             RStatementEnum::BuiltinFunction(builtin, rargs)
                         } else {
                             return Err(ToRunnableError::WrongInputsForBuiltinFunction(builtin, v.to_string(), arg_types));
@@ -341,12 +296,12 @@ fn statement(
                         // LIBRARY FUNCTION?
                         if let Some((libid, fnid)) = ginfo.lib_fns.get(v) {
                             let (_name, fn_in, fn_out) = &ginfo.libs[*libid].registered_fns[*fnid];
-                            if fn_in.len() == rargs.len() && fn_in.iter().zip(rargs.iter()).all(|(fn_in, arg)| arg.out().fits_in(fn_in).is_empty()) {
+                            if fn_in.len() == rargs.len() && fn_in.iter().zip(rargs.iter()).all(|(fn_in, arg)| arg.out(ginfo).fits_in(fn_in).is_empty()) {
                                 RStatementEnum::LibFunction(*libid, *fnid, rargs, fn_out.clone())
                             } else {
                                 // TODO! better error here
                                 return Err(if fn_in.len() == rargs.len() {
-                                    ToRunnableError::WrongArgsForLibFunction(v.to_string(), rargs.iter().map(|v| v.out()).collect())
+                                    ToRunnableError::WrongArgsForLibFunction(v.to_string(), rargs.iter().map(|v| v.out(ginfo)).collect())
                                 } else {
                                     ToRunnableError::FunctionWrongArgCount(v.to_string(), fn_in.len(), rargs.len())
                                 });
@@ -375,7 +330,7 @@ fn statement(
             SStatementEnum::If(c, t, e) => RStatementEnum::If(
                 {
                     let condition = statement(&c, ginfo, linfo)?;
-                    let out = condition.out().fits_in(&VType {
+                    let out = condition.out(ginfo).fits_in(&VType {
                         types: vec![VSingleType::Bool],
                     });
                     if out.is_empty() {
@@ -383,7 +338,7 @@ fn statement(
                     } else {
                         return Err(ToRunnableError::InvalidType {
                             expected: VSingleType::Bool.into(),
-                            found: condition.out(),
+                            found: condition.out(ginfo),
                             problematic: VType { types: out },
                         });
                     }
@@ -400,7 +355,7 @@ fn statement(
             SStatementEnum::For(v, c, b) => {
                 let mut linfo = linfo.clone();
                 let container = statement(&c, ginfo, &mut linfo)?;
-                let inner = container.out().inner_types();
+                let inner = container.out(ginfo).inner_types();
                 if inner.types.is_empty() {
                     return Err(ToRunnableError::ForLoopContainerHasNoInnerTypes);
                 }
@@ -444,7 +399,8 @@ fn statement(
                                 types_not_covered_req_error = true;
                                 types_not_covered = types_not_covered | {
                                     let mut v = val_type;
-                                    fn make_readable(v: &mut VType, ginfo: &GInfo) {
+                                    /// converts the VType to one that is human-readable (changes enum from usize to String, ...)
+                                    fn make_readable(v: &mut VType, ginfo: &GlobalScriptInfo) {
                                         for t in v.types.iter_mut() {
                                             match t {
                                                 VSingleType::EnumVariant(i, v) => {
@@ -452,18 +408,20 @@ fn statement(
                                                     make_readable(&mut v, ginfo);
                                                     *t = VSingleType::EnumVariantS(ginfo.enum_variants.iter().find_map(|(st, us)| if *us == *i { Some(st.clone()) } else { None }).unwrap(), v);
                                                 },
-                                                VSingleType::EnumVariantS(_, v) => make_readable(v, ginfo),
+                                                VSingleType::CustomType(i) => {
+                                                    *t = VSingleType::CustomTypeS(ginfo.custom_type_names.iter().find_map(|(st, us)| if *us == *i { Some(st.clone()) } else { None }).unwrap());
+                                                }
                                                 VSingleType::Tuple(v) => for t in v.iter_mut() {
                                                     make_readable(t, ginfo)
                                                 }
-                                                VSingleType::List(t) => make_readable(t, ginfo),
+                                                VSingleType::List(t) | VSingleType::EnumVariantS(_, t) => make_readable(t, ginfo),
                                                 VSingleType::Reference(v) => {
                                                     let mut v = v.clone().to();
                                                     make_readable(&mut v, ginfo);
                                                     assert_eq!(v.types.len(), 1);
                                                     *t = VSingleType::Reference(Box::new(v.types.remove(0)));
                                                 }
-                                                VSingleType::Bool | VSingleType::Int | VSingleType::Float | VSingleType::String | VSingleType::Function(..) | VSingleType::Thread(..) => (),
+                                                VSingleType::Bool | VSingleType::Int | VSingleType::Float | VSingleType::String | VSingleType::Function(..) | VSingleType::Thread(..) | VSingleType::CustomTypeS(_) => (),
                                             }
                                         }
                                     }
@@ -490,7 +448,7 @@ fn statement(
                     let og_type = switch_on_v.1.clone(); // linfo.vars.get(match_on).unwrap().1.clone();
                     for case in cases {
                         let case_condition = statement(&case.0, ginfo, linfo)?;
-                        let case_condition_out =  case_condition.out();
+                        let case_condition_out =  case_condition.out(ginfo);
                         let mut refutable = false;
                         let mut success_output = VType { types: vec![] };
                         for case_type in case_condition_out.types.iter() {
@@ -537,7 +495,7 @@ fn statement(
                 let st = statement(st, ginfo, linfo)?;
                 let ok = 'ok: {
                     let mut one = false;
-                    for t in st.out().types {
+                    for t in st.out(ginfo).types {
                         one = true;
                         // only if all types are indexable by i
                         match t {
@@ -554,7 +512,7 @@ fn statement(
                 if ok {
                     RStatementEnum::IndexFixed(st, *i)
                 } else {
-                    return Err(ToRunnableError::NotIndexableFixed(st.out(), *i));
+                    return Err(ToRunnableError::NotIndexableFixed(st.out(ginfo), *i));
                 }
             }
             SStatementEnum::EnumVariant(variant, s) => RStatementEnum::EnumVariant({
@@ -573,7 +531,7 @@ fn statement(
         .to();
     // if force_output_type is set, verify that the real output type actually fits in the forced one.
     if let Some(force_opt) = &s.force_output_type {
-        let real_output_type = statement.out();
+        let real_output_type = statement.out(ginfo);
         let problematic_types = real_output_type.fits_in(force_opt);
         if problematic_types.is_empty() {
             statement.force_output_type = Some(force_opt.clone());
@@ -583,7 +541,7 @@ fn statement(
     }
     if let Some((opt, derefs)) = &s.output_to {
         if let Some((var_id, var_out)) = linfo.vars.get(opt) {
-            let out = statement.out();
+            let out = statement.out(ginfo);
             let mut var_derefd = var_out.clone();
             for _ in 0..*derefs {
                 var_derefd = if let Some(v) = var_derefd.dereference() {
@@ -612,13 +570,13 @@ fn statement(
                 statement.output_to = Some((*var_id, *derefs));
             }
         } else {
-            let mut out = statement.out();
+            let mut out = statement.out(ginfo);
             for _ in 0..*derefs {
                 out = if let Some(v) = out.dereference() {
                     v
                 } else {
                     return Err(ToRunnableError::CannotDereferenceTypeNTimes(
-                        statement.out(),
+                        statement.out(ginfo),
                         *derefs,
                         out,
                     ));

mers/src/script/val_data.rs

@@ -5,7 +5,7 @@ use std::{
 
 use super::{
     code_runnable::RFunction,
-    global_info::GSInfo,
+    global_info::{GlobalScriptInfo, GSInfo},
     val_type::{VSingleType, VType},
 };
 
@@ -255,7 +255,7 @@ impl VData {
 }
 
 impl VDataEnum {
-    pub fn fmtgs(&self, f: &mut Formatter, info: Option<&GSInfo>) -> fmt::Result {
+    pub fn fmtgs(&self, f: &mut Formatter, info: Option<&GlobalScriptInfo>) -> fmt::Result {
         match self {
             Self::Bool(true) => write!(f, "true"),
             Self::Bool(false) => write!(f, "false"),
@@ -290,7 +290,7 @@ impl VDataEnum {
             }
             Self::EnumVariant(variant, inner) => {
                 if let Some(name) = if let Some(info) = info {
-                    info.enums
+                    info.enum_variants
                         .iter()
                         .find_map(|(name, id)| if id == variant { Some(name) } else { None })
                 } else {
@@ -312,7 +312,7 @@ impl Display for VDataEnum {
 }
 
 impl VData {
-    pub fn fmtgs(&self, f: &mut Formatter, info: Option<&GSInfo>) -> fmt::Result {
+    pub fn fmtgs(&self, f: &mut Formatter, info: Option<&GlobalScriptInfo>) -> fmt::Result {
         self.data.fmtgs(f, info)
     }
 }

mers/src/script/val_type.rs

@@ -4,7 +4,7 @@ use std::{
     ops::BitOr,
 };
 
-use super::global_info::GSInfo;
+use super::global_info::{GlobalScriptInfo, GSInfo};
 
 #[derive(Clone, Debug, PartialEq, Eq)]
 pub struct VType {
@@ -24,20 +24,22 @@ pub enum VSingleType {
     Reference(Box<Self>),
     EnumVariant(usize, VType),
     EnumVariantS(String, VType),
-    // CustomType(usize),
-    // CustomTypeS(String),
+    CustomType(usize),
+    CustomTypeS(String),
 }
 
 impl VSingleType {
     // None => Cannot get, Some(t) => getting can return t or nothing
-    pub fn get(&self, i: usize) -> Option<VType> {
+    pub fn get(&self, i: usize, gsinfo: &GlobalScriptInfo) -> Option<VType> {
         match self {
             Self::Bool | Self::Int | Self::Float | Self::Function(..) | Self::Thread(..) => None,
             Self::String => Some(VSingleType::String.into()),
             Self::Tuple(t) => t.get(i).cloned(),
             Self::List(t) => Some(t.clone()),
-            Self::Reference(r) => r.get(i),
-            Self::EnumVariant(_, t) | Self::EnumVariantS(_, t) => t.get(i),
+            Self::Reference(r) => r.get(i, gsinfo),
+            Self::EnumVariant(_, t) | Self::EnumVariantS(_, t) => t.get(i, gsinfo),
+            Self::CustomType(t) => gsinfo.custom_types[*t].get(i, gsinfo),
+            &Self::CustomTypeS(_) => unreachable!("CustomTypeS instead of CustomType, compiler error?"),
         }
     }
 }
@@ -45,10 +47,10 @@ impl VType {
     pub fn empty() -> Self {
         Self { types: vec![] }
     }
-    pub fn get(&self, i: usize) -> Option<VType> {
+    pub fn get(&self, i: usize, info: &GlobalScriptInfo) -> Option<VType> {
         let mut out = VType { types: vec![] };
         for t in &self.types {
-            out = out | t.get(i)?; // if we can't use *get* on one type, we can't use it at all.
+            out = out | t.get(i, info)?; // if we can't use *get* on one type, we can't use it at all.
         }
         Some(out)
     }
@@ -80,15 +82,17 @@ impl VType {
 }
 
 impl VSingleType {
-    pub fn get_any(&self) -> Option<VType> {
+    pub fn get_any(&self, info: &GlobalScriptInfo) -> Option<VType> {
         match self {
             Self::Bool | Self::Int | Self::Float | Self::Function(..) | Self::Thread(..) => None,
             Self::String => Some(VSingleType::String.into()),
             Self::Tuple(t) => Some(t.iter().fold(VType { types: vec![] }, |a, b| a | b)),
             Self::List(t) => Some(t.clone()),
-            Self::Reference(r) => r.get_any(),
-            Self::EnumVariant(_, t) => t.get_any(),
+            Self::Reference(r) => r.get_any(info),
+            Self::EnumVariant(_, t) => t.get_any(info),
             Self::EnumVariantS(..) => unreachable!(),
+            Self::CustomType(t) => info.custom_types[*t].get_any(info),
+            Self::CustomTypeS(_) => unreachable!(),
         }
     }
     pub fn is_reference(&self) -> bool {
@@ -106,10 +110,10 @@ impl VSingleType {
     }
 }
 impl VType {
-    pub fn get_any(&self) -> Option<VType> {
+    pub fn get_any(&self, info: &GlobalScriptInfo) -> Option<VType> {
         let mut out = VType { types: vec![] };
         for t in &self.types {
-            out = out | t.get_any()?; // if we can't use *get* on one type, we can't use it at all.
+            out = out | t.get_any(info)?; // if we can't use *get* on one type, we can't use it at all.
         }
         Some(out)
     }
@@ -117,11 +121,11 @@ impl VType {
 
 impl VType {
     /// Returns a vec with all types in self that aren't covered by rhs. If the returned vec is empty, self fits in rhs.
-    pub fn fits_in(&self, rhs: &Self) -> Vec<VSingleType> {
+    pub fn fits_in(&self, rhs: &Self, info: &GlobalScriptInfo) -> Vec<VSingleType> {
         let mut no = vec![];
         for t in &self.types {
             // if t doesnt fit in any of rhs's types
-            if !rhs.types.iter().any(|r| t.fits_in(r)) {
+            if !rhs.types.iter().any(|r| t.fits_in(r, info)) {
                 no.push(t.clone())
             }
         }
@@ -223,6 +227,7 @@ impl VSingleType {
             v => v.to(),
         }
     }
+    /// converts all Self::EnumVariantS to Self::EnumVariant
     pub fn enum_variants(&mut self, enum_variants: &mut HashMap<String, usize>) {
         match self {
             Self::Bool | Self::Int | Self::Float | Self::String => (),
@@ -254,15 +259,20 @@ impl VSingleType {
                 v.enum_variants(enum_variants);
                 *self = Self::EnumVariant(e, v.clone());
             }
+            Self::CustomType(_) | Self::CustomTypeS(_) => (),
         }
     }
-    pub fn fits_in(&self, rhs: &Self) -> bool {
+    pub fn fits_in(&self, rhs: &Self, info: &GlobalScriptInfo) -> bool {
         match (self, rhs) {
-            (Self::Reference(r), Self::Reference(b)) => r.fits_in(b),
+            (Self::Reference(r), Self::Reference(b)) => r.fits_in(b, info),
             (Self::Reference(_), _) | (_, Self::Reference(_)) => false,
             (Self::EnumVariant(v1, t1), Self::EnumVariant(v2, t2)) => {
-                *v1 == *v2 && t1.fits_in(&t2).is_empty()
-            }
+                *v1 == *v2 && t1.fits_in(&t2, info).is_empty()
+            },
+            (Self::CustomType(a), b) => info.custom_types[*a].fits_in(&b.clone().to(), info).is_empty(),
+            (a, Self::CustomType(b)) => a.clone().to().fits_in(&info.custom_types[*b], info).is_empty(),
+            (Self::CustomType(a), Self::CustomType(b)) => info.custom_types[*a].fits_in(&info.custom_types[*b], info).is_empty(),
+            (Self::CustomTypeS(_), _) | (_, Self::CustomTypeS(_)) => unreachable!(),
             (Self::EnumVariant(..), _) | (_, Self::EnumVariant(..)) => false,
             (Self::EnumVariantS(..), _) | (_, Self::EnumVariantS(..)) => unreachable!(),
             (Self::Bool, Self::Bool)
@@ -272,19 +282,19 @@ impl VSingleType {
             (Self::Bool | Self::Int | Self::Float | Self::String, _) => false,
             (Self::Tuple(a), Self::Tuple(b)) => {
                 if a.len() == b.len() {
-                    a.iter().zip(b.iter()).all(|(a, b)| a.fits_in(b).is_empty())
+                    a.iter().zip(b.iter()).all(|(a, b)| a.fits_in(b, info).is_empty())
                 } else {
                     false
                 }
             }
             (Self::Tuple(_), _) => false,
-            (Self::List(a), Self::List(b)) => a.fits_in(b).is_empty(),
+            (Self::List(a), Self::List(b)) => a.fits_in(b, info).is_empty(),
             (Self::List(_), _) => false,
             (Self::Function(a), Self::Function(b)) => 'func_out: {
                 for a in a {
                     'search: {
                         for b in b {
-                            if a.1.fits_in(&b.1).is_empty()
+                            if a.1.fits_in(&b.1, info).is_empty()
                                 && a.0.iter().zip(b.0.iter()).all(|(a, b)| *a == *b)
                             {
                                 break 'search;
@@ -296,7 +306,7 @@ impl VSingleType {
                 true
             }
             (Self::Function(..), _) => false,
-            (Self::Thread(a), Self::Thread(b)) => a.fits_in(b).is_empty(),
+            (Self::Thread(a), Self::Thread(b)) => a.fits_in(b, info).is_empty(),
             (Self::Thread(..), _) => false,
         }
     }
@@ -323,7 +333,7 @@ impl VType {
 }
 
 impl VSingleType {
-    pub fn fmtgs(&self, f: &mut Formatter, info: Option<&GSInfo>) -> fmt::Result {
+    pub fn fmtgs(&self, f: &mut Formatter, info: Option<&GlobalScriptInfo>) -> fmt::Result {
         match self {
             Self::Bool => write!(f, "bool"),
             Self::Int => write!(f, "int"),
@@ -368,7 +378,7 @@ impl VSingleType {
             }
             Self::EnumVariant(variant, inner) => {
                 if let Some(name) = if let Some(info) = info {
-                    info.enums
+                    info.enum_variants
                         .iter()
                         .find_map(|(name, id)| if id == variant { Some(name) } else { None })
                 } else {
@@ -396,7 +406,7 @@ impl Display for VSingleType {
 }
 
 impl VType {
-    pub fn fmtgs(&self, f: &mut Formatter, info: Option<&GSInfo>) -> fmt::Result {
+    pub fn fmtgs(&self, f: &mut Formatter, info: Option<&GlobalScriptInfo>) -> fmt::Result {
         for (i, t) in self.types.iter().enumerate() {
             if i > 0 {
                 write!(f, "/")?;