Add a lightning-wasm-bindings crate and generation code

[rust-lightning] / genbindings.sh

diff --git a/genbindings.sh b/genbindings.sh
index da8a1c15a5c06e9fd1b39772eb9899e5fe0cc0d2..8ff8861961cf6030798cbf94695a7847a0d26b53 100755 (executable)
--- a/genbindings.sh
+++ b/genbindings.sh
@@ -8,24 +8,40 @@ set -x
 # First build the latest c-bindings-gen binary
 cd c-bindings-gen && cargo build && cd ..
 
-# Then wipe all the existing C bindings (because we're being run in the right directory)
-# note that we keep the few manually-generated files first:
-mv lightning-c-bindings/src/c_types/mod.rs ./
-mv lightning-c-bindings/src/bitcoin ./
-
-rm -rf lightning-c-bindings/src
-
-mkdir -p lightning-c-bindings/src/c_types/
-mv ./mod.rs lightning-c-bindings/src/c_types/
-mv ./bitcoin lightning-c-bindings/src/
-
-# Finally, run the c-bindings-gen binary, building fresh bindings.
-SRC="$(pwd)/lightning/src"
-OUT="$(pwd)/lightning-c-bindings/src"
-OUT_TEMPL="$(pwd)/lightning-c-bindings/src/c_types/derived.rs"
-OUT_F="$(pwd)/lightning-c-bindings/include/rust_types.h"
-OUT_CPP="$(pwd)/lightning-c-bindings/include/lightningpp.hpp"
-RUST_BACKTRACE=1 ./c-bindings-gen/target/debug/c-bindings-gen $SRC/ $OUT/ lightning $OUT_TEMPL $OUT_F $OUT_CPP "#[no_mangle]" "#[repr(C)]"
+for FOLDER in "lightning-c-bindings" "lightning-wasm-bindings"; do
+       # Then wipe all the existing C bindings (because we're being run in the right directory)
+       # note that we keep the few manually-generated files first:
+       mv $FOLDER/src/c_types/mod.rs ./
+       mv $FOLDER/src/bitcoin ./
+
+       rm -rf $FOLDER/src
+
+       mkdir -p $FOLDER/src/c_types/
+       mv ./mod.rs $FOLDER/src/c_types/
+       mv ./bitcoin $FOLDER/src/
+
+       # Finally, run the c-bindings-gen binary, building fresh bindings.
+       SRC="$(pwd)/lightning/src"
+       OUT="$(pwd)/$FOLDER/src"
+       OUT_TEMPL="$(pwd)/$FOLDER/src/c_types/derived.rs"
+       if [ "$FOLDER" = "lightning-c-bindings" ]; then
+               OUT_F="$(pwd)/$FOLDER/include/rust_types.h"
+               OUT_CPP="$(pwd)/$FOLDER/include/lightningpp.hpp"
+               FN_ATTR="#[no_mangle]"
+               STRUCT_ATTR="#[repr(C)]"
+       else
+               # WASM bindings don't care about C++ headers
+               OUT_F="/dev/null"
+               OUT_CPP="/dev/null"
+               FN_ATTR="#[wasm_bindgen::prelude::wasm_bindgen]"
+               STRUCT_ATTR="#[wasm_bindgen::prelude::wasm_bindgen]"
+       fi
+       RUST_BACKTRACE=1 ./c-bindings-gen/target/debug/c-bindings-gen $SRC/ $OUT/ lightning $OUT_TEMPL $OUT_F $OUT_CPP "$FN_ATTR" "$STRUCT_ATTR"
+
+       pushd $FOLDER
+       cargo build
+       popd
+done
 
 # Now cd to lightning-c-bindings, build the generated bindings, and call cbindgen to build a C header file
 PATH="$PATH:~/.cargo/bin"