Reintroduce old ABI format generation (#174)

* [lang] reintroduce the old ABI generation

We keep this in ink! until the new ABI format support is stable enough.

* [examples] update examples to be able to use the old ABI generation

* [cli] update template for old ABI generation

cli/template/Cargo.toml

@@ -43,6 +43,7 @@ ink-generate-abi = [
     "ink_abi",
     "type-metadata",
     "ink_core/ink-generate-abi",
+    "ink_lang/ink-generate-abi",
 ]
 
 [profile.release]

examples/lang/erc20/Cargo.toml

@@ -43,6 +43,7 @@ ink-generate-abi = [
     "ink_abi",
     "type-metadata",
     "ink_core/ink-generate-abi",
+    "ink_lang/ink-generate-abi",
 ]
 
 [profile.release]

examples/lang/events/Cargo.toml

@@ -43,6 +43,7 @@ ink-generate-abi = [
     "ink_abi",
     "type-metadata",
     "ink_core/ink-generate-abi",
+    "ink_lang/ink-generate-abi",
 ]
 
 [profile.release]

examples/lang/flipper/Cargo.toml

@@ -43,7 +43,9 @@ ink-generate-abi = [
     "ink_abi",
     "type-metadata",
     "ink_core/ink-generate-abi",
+    "ink_lang/ink-generate-abi",
 ]
+ink-as-dependency = []
 
 [profile.release]
 panic = "abort"

examples/lang/incrementer/Cargo.toml

@@ -44,6 +44,7 @@ ink-generate-abi = [
     "ink_abi",
     "type-metadata",
     "ink_core/ink-generate-abi",
+    "ink_lang/ink-generate-abi",
 ]
 
 [profile.release]

examples/lang/shared_vec/Cargo.toml

@@ -43,6 +43,7 @@ ink-generate-abi = [
     "ink_abi",
     "type-metadata",
     "ink_core/ink-generate-abi",
+    "ink_lang/ink-generate-abi",
 ]
 
 [profile.release]

lang/Cargo.toml

@@ -52,3 +52,6 @@ test-env = [
     "std",
     "ink_model/test-env",
 ]
+ink-generate-abi = [
+    "std",
+]

lang/src/contract.rs

@@ -17,6 +17,8 @@
 use proc_macro2::TokenStream as TokenStream2;
 use syn::Result;
 
+#[cfg(feature = "ink-generate-abi")]
+use crate::old_abi;
 use crate::{
     gen,
     hir,
@@ -33,6 +35,8 @@ pub fn generate(input: TokenStream2) -> TokenStream2 {
 pub fn generate_or_err(input: TokenStream2) -> Result<TokenStream2> {
     let ast_contract = parser::parse_contract(input.clone())?;
     let hir_contract = hir::Contract::from_ast(&ast_contract)?;
+    #[cfg(feature = "ink-generate-abi")]
+    old_abi::generate_old_abi(&hir_contract)?;
     let tokens = gen::generate_code(&hir_contract);
     Ok(tokens)
 }

lang/src/lib.rs

@@ -27,6 +27,9 @@ mod hir;
 mod ident_ext;
 mod parser;
 
+#[cfg(feature = "ink-generate-abi")]
+mod old_abi;
+
 #[cfg(test)]
 mod tests;