experimental: support for debug info (#118)

Signed-off-by: wpt967 <matt.aw@parity.io>
Signed-off-by: xermicus <cyrill@parity.io>

crates/solidity/src/yul/parser/statement/assignment.rs

@@ -47,7 +47,11 @@ impl Assignment {
                 .into());
             }
         };
-        let length = identifier.inner.len();
+        let length = identifier
+            .inner
+            .len()
+            .try_into()
+            .map_err(|_| Error::Parser(ParserError::InvalidLength))?;
 
         match lexer.peek()? {
             Token {
@@ -115,6 +119,8 @@ where
         mut self,
         context: &mut revive_llvm_context::PolkaVMContext<D>,
     ) -> anyhow::Result<()> {
+        context.set_debug_location(self.location.line, 0, None)?;
+
         let value = match self.initializer.into_llvm(context)? {
             Some(value) => value,
             None => return Ok(()),
@@ -142,6 +148,8 @@ where
         context.build_store(tuple_pointer, value.to_llvm())?;
 
         for (index, binding) in self.bindings.into_iter().enumerate() {
+            context.set_debug_location(self.location.line, 0, None)?;
+
             let field_pointer = context.build_gep(
                 tuple_pointer,
                 &[