Interfaces for errors, calling vasm, and generating source maps

vweb/src/lib.rs

@@ -1,6 +1,8 @@
 use wasm_bindgen::prelude::*;
 use vcore::{CPU, Word};
 use vcore::memory::{PeekPoke, PeekPokeExt};
+use vasm_core::parse_error::AssembleError;
+use serde::{ Deserialize, Serialize };
 
 #[wasm_bindgen]
 pub struct NovaForth;
@@ -20,6 +22,45 @@ impl NovaForth {
 #[wasm_bindgen]
 pub struct WasmCPU(CPU);
 
+#[wasm_bindgen(inspectable, getter_with_clone)]
+#[derive(Serialize, Deserialize)]
+pub struct JsVasmError {
+    pub line_number: usize,
+    pub message: String
+}
+
+impl From<AssembleError> for JsVasmError {
+    fn from(value: AssembleError) -> Self {
+        let line = match value.clone() {
+            AssembleError::ParseError(loc, _) => loc.line_num,
+            AssembleError::EquResolveError(loc, _, _) => loc.line_num,
+            AssembleError::EquDuplicateError(loc, _) => loc.line_num,
+            AssembleError::OrgResolveError(loc, _) => loc.line_num,
+            AssembleError::ArgError(loc, _) => loc.line_num,
+            AssembleError::NoCode => 0,
+            AssembleError::IncludeError(loc, _) => loc.line_num,
+            AssembleError::FileError(_) => 0,
+            AssembleError::MacroError(loc) => loc.line_num,
+        };
+
+        return JsVasmError {
+            line_number: line,
+            message: value.message()
+        }
+    }
+}
+
+#[wasm_bindgen]
+pub fn assemble_snippet(snippet: String) -> Result<Vec<u8>, JsVasmError> {
+    vasm_core::assemble_snippet(snippet.lines().map(String::from)).map_err(|err| JsVasmError::from(err))
+}
+
+#[wasm_bindgen]
+pub fn source_map(snippet: String) -> JsValue {
+    let source_map = vasm_core::snippet_source_map(snippet.lines().map(String::from)).map_err(|err| JsVasmError::from(err));
+    serde_wasm_bindgen::to_value(&source_map).unwrap()
+}
+
 #[wasm_bindgen]
 impl WasmCPU {
     #[wasm_bindgen(constructor)]