Use type alias for error.

src/api/call_fn.rs

@@ -4,8 +4,7 @@
 use crate::engine::{EvalState, Imports};
 use crate::types::dynamic::Variant;
 use crate::{
-    Dynamic, Engine, EvalAltResult, FuncArgs, Position, RhaiResult, RhaiResultOf, Scope, StaticVec,
-    AST,
+    Dynamic, Engine, FuncArgs, Position, RhaiResult, RhaiResultOf, Scope, StaticVec, AST, ERR,
 };
 use std::any::type_name;
 #[cfg(feature = "no_std")]
@@ -70,7 +69,7 @@ impl Engine {
         let typ = self.map_type_name(result.type_name());
 
         result.try_cast().ok_or_else(|| {
-            EvalAltResult::ErrorMismatchOutputType(
+            ERR::ErrorMismatchOutputType(
                 self.map_type_name(type_name::<T>()).into(),
                 typ.into(),
                 Position::NONE,
@@ -176,7 +175,7 @@ impl Engine {
         let fn_def = ast
             .shared_lib()
             .get_script_fn(name, args.len())
-            .ok_or_else(|| EvalAltResult::ErrorFunctionNotFound(name.into(), Position::NONE))?;
+            .ok_or_else(|| ERR::ErrorFunctionNotFound(name.into(), Position::NONE))?;
 
         // Check for data race.
         #[cfg(not(feature = "no_closure"))]

src/api/compile.rs

@@ -366,7 +366,7 @@ impl Engine {
             } else if json_text.starts_with(Token::LeftBrace.literal_syntax()) {
                 ["#", json_text]
             } else {
-                return Err(crate::ParseErrorType::MissingToken(
+                return Err(crate::PERR::MissingToken(
                     Token::LeftBrace.syntax().into(),
                     "to start a JSON object hash".into(),
                 )

src/api/eval.rs

@@ -3,9 +3,7 @@
 use crate::engine::{EvalState, Imports};
 use crate::parser::ParseState;
 use crate::types::dynamic::Variant;
-use crate::{
-    Dynamic, Engine, EvalAltResult, Module, Position, RhaiResult, RhaiResultOf, Scope, AST,
-};
+use crate::{Dynamic, Engine, Module, Position, RhaiResult, RhaiResultOf, Scope, AST, ERR};
 use std::any::type_name;
 #[cfg(feature = "no_std")]
 use std::prelude::v1::*;
@@ -193,7 +191,7 @@ impl Engine {
         let typ = self.map_type_name(result.type_name());
 
         result.try_cast::<T>().ok_or_else(|| {
-            EvalAltResult::ErrorMismatchOutputType(
+            ERR::ErrorMismatchOutputType(
                 self.map_type_name(type_name::<T>()).into(),
                 typ.into(),
                 Position::NONE,

src/api/files.rs

@@ -3,7 +3,7 @@
 #![cfg(not(any(target_arch = "wasm32", target_arch = "wasm64")))]
 
 use crate::types::dynamic::Variant;
-use crate::{Engine, EvalAltResult, RhaiResultOf, Scope, AST};
+use crate::{Engine, RhaiResultOf, Scope, AST, ERR};
 #[cfg(feature = "no_std")]
 use std::prelude::v1::*;
 
@@ -13,7 +13,7 @@ impl Engine {
         use std::io::Read;
 
         let mut f = std::fs::File::open(path.clone()).map_err(|err| {
-            EvalAltResult::ErrorSystem(
+            ERR::ErrorSystem(
                 format!("Cannot open script file '{}'", path.to_string_lossy()),
                 err.into(),
             )
@@ -22,7 +22,7 @@ impl Engine {
         let mut contents = String::new();
 
         f.read_to_string(&mut contents).map_err(|err| {
-            EvalAltResult::ErrorSystem(
+            ERR::ErrorSystem(
                 format!("Cannot read script file '{}'", path.to_string_lossy()),
                 err.into(),
             )