Merge pull request #407 from schungx/master

Add no_position feature.

.github/workflows/build.yml

@@ -21,6 +21,7 @@ jobs:
           - "--features metadata,serde,internals"
           - "--features unchecked"
           - "--features sync"
+          - "--features no_position"
           - "--features no_optimize"
           - "--features no_float"
           - "--features f32_float,serde,metadata,internals"
@@ -34,8 +35,8 @@ jobs:
           - "--features no_module"
           - "--features no_closure"
           - "--features unicode-xid-ident"
-          - "--features sync,no_function,no_float,no_optimize,no_module,no_closure,metadata,serde,unchecked"
-          - "--features no_function,no_float,no_index,no_object,no_optimize,no_module,no_closure,unchecked"
+          - "--features sync,no_function,no_float,no_position,no_optimize,no_module,no_closure,metadata,serde,unchecked"
+          - "--features no_function,no_float,no_position,no_index,no_object,no_optimize,no_module,no_closure,unchecked"
         toolchain: [stable]
         experimental: [false]
         include:

CHANGELOG.md

@@ -26,6 +26,7 @@ New features
 ------------
 
 * A module called `global` is automatically created to hold global-level constants, which can then be accessed from functions.
+* A new feature `no_position` is added to turn off position tracking during parsing to squeeze out the last drop of performance.
 
 
 Version 0.20.0

Cargo.toml

@@ -26,6 +26,7 @@ rhai_codegen = { version = "0.3.4", path = "codegen", default_features = false }
 default = ["smartstring/std", "ahash/std", "num-traits/std"] # remove 'smartstring/std' when smartstring is updated to support no-std
 unchecked = []                  # unchecked arithmetic
 sync = []                       # restrict to only types that implement Send + Sync
+no_position = []                # do not track position in the parser
 no_optimize = []                # no script optimizer
 no_float = []                   # no floating-point
 f32_float = []                  # set FLOAT=f32

examples/arrays_and_structs.rs

@@ -25,7 +25,7 @@ fn main() -> Result<(), Box<EvalAltResult>> {
         .register_fn("update", TestStruct::update);
 
     let result = engine.eval::<TestStruct>(
-        r"
+        "
             let x = new_ts();
             x.update();
             x
@@ -35,7 +35,7 @@ fn main() -> Result<(), Box<EvalAltResult>> {
     println!("{:?}", result);
 
     let result = engine.eval::<TestStruct>(
-        r"
+        "
             let x = [ new_ts() ];
             x[0].update();
             x[0]

examples/custom_types_and_methods.rs

@@ -25,7 +25,7 @@ fn main() -> Result<(), Box<EvalAltResult>> {
         .register_fn("update", TestStruct::update);
 
     let result = engine.eval::<TestStruct>(
-        r"
+        "
             let x = new_ts();
             x.update();
             x