Fix default for arrays

examples/array_structs.reid

@@ -16,6 +16,9 @@ fn test() -> Test {
 fn main() -> u32 {
     let mut value = test();
 
+    let beep = [2, 3, 4];
+    let boop = 3;
+
     let mut a = &mut value;
 
     *a.second[2] = 5;

examples/hello_world.reid

@@ -9,18 +9,17 @@ import std::concat_strings;
 
 fn main() -> i32 {
     let mut test = from_str("hello");
-    let mut other = from_str(" world");
 
-    concat_strings(&mut test, &other);
+    concat_strings(&mut test, from_str(" world"));
 
     add_char(&mut test, '!');
     add_char(&mut test, '\n');
 
     add_num_to_str(&mut test, 175);
     
-    print(&test);
+    print(test);
 
-    free_string(&mut test);
+    free_string(&test);
 
     return 0;
 }

examples/loops.reid

@@ -9,8 +9,8 @@ fn main() -> u32 {
   for i in 0 .. 15 {
     let mut text = from_str("num: ");
     add_num_to_str(&mut text, i);
-    print(&text);
-    free_string(&mut text);
+    print(text);
+    free_string(&text);
   }
 
   let mut num = 0;

examples/std_test.reid

@@ -6,7 +6,7 @@ import std::int_div;
 fn main() -> i32 {
     let hello = from_str("hello world");
 
-    print(&hello);
+    print(hello);
 
     return int_div(15, 5).quotient;
 }

reid/lib/std.reid

@@ -9,8 +9,8 @@ struct div_t {
     remainder: i32,
 }
 
-pub fn print(message: &String) {
-    puts(*message.inner);
+pub fn print(message: String) {
+    puts(message.inner);
 }
 
 pub fn int_div(numerator: i32, denominator: i32) -> div_t {
@@ -46,7 +46,7 @@ pub fn from_str(str: *char) -> String {
         max_length: length,
         must_be_freed: false,
     };
-    concat_strings(&mut new, &static);
+    concat_strings(&mut new, static);
     return new;
 }
 
@@ -74,7 +74,7 @@ pub fn set_char(string: &mut String, c: char, position: u64) {
     }
 }
 
-pub fn free_string(string: &mut String) {
+pub fn free_string(string: &String) {
     free((*string).inner as *u8);
 }
 
@@ -110,6 +110,12 @@ pub fn add_num_to_str(string: &mut String, num: u64) {
     else if rem == 9 { add_char(string, '9'); }
 }
 
+pub fn concat_strings(destination: &mut String, source: String) {
+    for i in 0 .. (str_length(source.inner) - 1) {
+        add_char(destination, source.inner[i]);
+    }
+}
+
 pub fn clamp(min: f32, max: f32, value: f32) -> f32 {
     if value > max {
         return max;
@@ -126,9 +132,3 @@ pub fn abs(f: f32) -> f32 {
     }
     return f;
 }
-
-pub fn concat_strings(destination: &mut String, source: &String) {
-    for i in 0 .. (str_length((*source).inner) - 1) {
-        add_char(destination, (*source).inner[i]);
-    }
-}

reid/src/mir/implement.rs

@@ -596,15 +596,25 @@ impl TypeKind {
     /// Try to collapse a type on itself producing a default type if one exists,
     /// Error if not.
     pub fn or_default(&self) -> Result<TypeKind, ErrorKind> {
-        match self {
+        Ok(match self {
             TypeKind::Vague(vague_type) => match &vague_type {
-                Vague::Unknown => Err(ErrorKind::TypeIsVague(*vague_type)),
-                Vague::Integer => Ok(TypeKind::I32),
+                Vague::Unknown => Err(ErrorKind::TypeIsVague(*vague_type))?,
+                Vague::Integer => TypeKind::I32,
                 Vague::TypeRef(_) => panic!("Hinted default!"),
-                VagueType::Decimal => Ok(TypeKind::F32),
+                VagueType::Decimal => TypeKind::F32,
             },
-            _ => Ok(self.clone()),
-        }
+            TypeKind::Array(type_kind, len) => {
+                TypeKind::Array(Box::new(type_kind.or_default()?), *len)
+            }
+            TypeKind::Borrow(type_kind, mutable) => {
+                TypeKind::Borrow(Box::new(type_kind.or_default()?), *mutable)
+            }
+            TypeKind::UserPtr(type_kind) => TypeKind::UserPtr(Box::new(type_kind.or_default()?)),
+            TypeKind::CodegenPtr(type_kind) => {
+                TypeKind::CodegenPtr(Box::new(type_kind.or_default()?))
+            }
+            _ => self.clone(),
+        })
     }
 
     pub fn resolve_weak(&self, refs: &TypeRefs) -> TypeKind {

reid/src/mir/typecheck.rs

@@ -222,7 +222,11 @@ impl Block {
             let ret = match &mut statement.0 {
                 StmtKind::Let(variable_reference, mutable, expression) => {
                     // Resolve possible hint in var reference
-                    let var_t_resolved = variable_reference.0.resolve_ref(&typerefs);
+                    let var_t_resolved = state.or_else(
+                        variable_reference.0.resolve_ref(&typerefs).or_default(),
+                        TypeKind::Vague(VagueType::Unknown),
+                        variable_reference.2,
+                    );
 
                     // Typecheck (and coerce) expression with said type
                     let res = expression.typecheck(&mut state, &typerefs, Some(&var_t_resolved));