Updates wasm-bindgen and refactors readData() buffer handling.

.travis.yml

@@ -5,7 +5,7 @@ cache: cargo
 before_script:
   if [[ $(cargo install --list | grep wasm-pack | wc -c) -eq 0 ]]; then cargo install wasm-pack; fi
 script:
-  wasm-pack build --release
+  wasm-pack build --target web --release
 before_deploy:
   mv pkg/symatem_bg.wasm symatem.wasm
 deploy:

Cargo.toml

@@ -12,7 +12,7 @@ edition = "2018"
 crate-type = ["cdylib"]
 
 [dependencies]
-wasm-bindgen = "0.2.59"
+wasm-bindgen = "0.2.67"
 
 [package.metadata.wasm-pack.profile.release]
 wasm-opt = ["-Oz", "--enable-mutable-globals"]

src/lib.rs

@@ -99,8 +99,13 @@ pub fn creaseLength(namespace_identity: symbol::Identity, symbol_identity: symbo
 }
 
 #[wasm_bindgen]
-pub fn readData(namespace_identity: symbol::Identity, symbol_identity: symbol::Identity, offset: usize, length: usize, dst: &mut [usize]) -> bool {
-    graph::read_data(symbol::Symbol(namespace_identity, symbol_identity), offset, length, dst)
+pub fn readData(namespace_identity: symbol::Identity, symbol_identity: symbol::Identity, offset: usize, length: usize) -> Option<Vec<u8>> {
+    let mut dst: Vec<usize> = vec![0; (length+bitops::ARCHITECTURE_SIZE-1)/bitops::ARCHITECTURE_SIZE];
+    if graph::read_data(symbol::Symbol(namespace_identity, symbol_identity), offset, length, &mut dst) {
+        Some(unsafe { transmute_vec::<usize, u8>(dst) })
+    } else {
+        None
+    }
 }
 
 #[wasm_bindgen]