Merge pull request #11 from jymchng/feature/feature-gates

Feature/feature gates

src/ast_macro.rs

@@ -102,9 +102,9 @@ impl AllowedMacros {
         let macro_ident = the_macro.path.require_ident()?;
         match macro_ident.to_string().as_str() {
             "env" => Ok(Self::Env(the_macro.parse_body::<EnvArgs>()?)),
-            other => Err(Error::new_spanned(
-                other,
-                "currently only support `env`-like macro invocation",
+            other => Err(Error::new(
+                macro_ident.span(),
+                format!("currently only support `env` macro-like invocation, it currently does not support `{}`", other),
             )),
         }
     }

src/exprs_impl.rs

@@ -1,7 +1,7 @@
 use crate::ast::{LitInteger, MathExprs};
-use crate::rsc::{parse, tokenize, Interpreter, Variant};
 use proc_macro2::Span;
 use quote::ToTokens;
+use rsc::{parse, tokenize, Interpreter, Variant};
 use syn::{spanned::Spanned, Error, LitInt, Result, Stmt};
 
 const ANS: &str = "ANS";

src/lib.rs

@@ -7,8 +7,6 @@ use crate::ast::{
 };
 use crate::macros::debug_eprintln;
 use proc_macro::{self, TokenStream};
-#[allow(clippy::all)]
-use rsc;
 use tnconst_impl::{
     nconst_impl_lit_integer, nconst_impl_math_exprs, pconst_impl_lit_integer,
     pconst_impl_math_exprs, tnconst_impl_lit_integer, tnconst_impl_math_exprs,

trybuild_tests/compile_fails/test_compile_fail.rs

@@ -41,6 +41,7 @@ fn test_tnconst() {
     type R = tnconst![- env!("ENV_VAR");];
     type S = tnconst![+ env!("NENV_VAR");];
     type T = tnconst![ env!("NENV_VAR");];
+    type U = tnconst![ ggenv!("NENV_VAR");];
     println!("test_tnconst Passed!");
 }