From 9dae6ef05ba9b5a1022d343e6beb09b456125f62 Mon Sep 17 00:00:00 2001
From: Dr Maxim Orlovsky <orlovsky@ubideco.org>
Date: Mon, 11 Nov 2024 15:37:36 +0100
Subject: [PATCH] chore: no_std version

---
 .github/workflows/build.yml | 2 +-
 Cargo.toml                  | 8 +++++---
 src/lib.rs                  | 5 +++++
 src/parser.rs               | 2 ++
 4 files changed, 13 insertions(+), 4 deletions(-)

diff --git a/.github/workflows/build.yml b/.github/workflows/build.yml
index 968f81a..2481e7b 100644
--- a/.github/workflows/build.yml
+++ b/.github/workflows/build.yml
@@ -33,7 +33,7 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        feature: [ ]
+        feature: [ std ]
     steps:
       - uses: actions/checkout@v4
       - uses: dtolnay/rust-toolchain@stable
diff --git a/Cargo.toml b/Cargo.toml
index 8688394..5a7239f 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -6,7 +6,7 @@ description = "Framework for declarative domain-specific languages"
 repository = "https://github.com/UBIDECO/parseltongue"
 homepage = "https://ubideco.org/ParselTongue"
 keywords = ["language", "declarative", "syntax", "parser"]
-categories = ["parser-implementations"]
+categories = ["parser-implementations", "no-std"]
 readme = "README.md"
 license = "Apache-2.0"
 edition = "2021"
@@ -20,8 +20,10 @@ name = "parseltongue"
 amplify = "~4.8.0"
 
 [features]
-default = []
-all = []
+default = ["std"]
+all = ["std"]
+
+std = []
 
 [package.metadata.docs.rs]
 features = ["all"]
diff --git a/src/lib.rs b/src/lib.rs
index 13b0152..30286fb 100644
--- a/src/lib.rs
+++ b/src/lib.rs
@@ -21,6 +21,10 @@
 // the License.
 
 #![cfg_attr(docsrs, feature(doc_auto_cfg))]
+#![cfg_attr(not(feature = "std"), no_std)]
+
+#[cfg(not(feature = "std"))]
+extern crate alloc;
 
 #[macro_use]
 extern crate amplify;
@@ -28,4 +32,5 @@ extern crate amplify;
 mod statement;
 mod parser;
 
+pub use parser::{Block, Brackets, ParseError, ParsedSource, Parser, Quotes, UnparsedSource};
 pub use statement::{Decl, Module, Statement};
diff --git a/src/parser.rs b/src/parser.rs
index 0e8b3ad..68c5d6f 100644
--- a/src/parser.rs
+++ b/src/parser.rs
@@ -20,6 +20,8 @@
 // or implied. See the License for the specific language governing permissions and limitations under
 // the License.
 
+#[cfg(not(feature = "std"))]
+use alloc::vec::Vec;
 use core::fmt::{self, Debug, Display, Formatter};
 use core::str::Lines;