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Improve error messages for named/indexed lookups in WASM bindings.

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PiperOrigin-RevId: 862682001
Change-Id: I6381af64b724de0ab5aee43cdc89ce463b590cf1
This commit is contained in:
Google DeepMind
2026-01-29 04:52:48 -08:00
committed by Copybara-Service
parent f6796f36b2
commit 59c5017073
4 changed files with 118 additions and 5 deletions
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wasm/codegen/generators/structs.py
+2 -2
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@@ -396,13 +396,13 @@ def build_struct_header(
if (val.isString()) { \\
int id = mj_name2id(ptr_, OBJTYPE, val.as<std::string>().c_str()); \\
if (id == -1) { \\
mju_error("Invalid name, MjModel." #accessor_name " not found"); \\
mju_error("%s", KeyErrorMessage(ptr_, OBJTYPE, ptr_->nfield, val.as<std::string>(), #accessor_name).c_str()); \\
} \\
return MjModel##Name##Accessor(ptr_, id); \\
} else if (val.isNumber()) { \\
int id = val.as<int>(); \\
if (id < 0 || id >= ptr_->nfield) { \\
mju_error_i("Invalid id %d for MjModel." #accessor_name, id); \\
mju_error("%s", IndexErrorMessage(id, ptr_->nfield, #accessor_name).c_str()); \\
} \\
return MjModel##Name##Accessor(ptr_, id); \\
} else { \\