Function read_name_section

tools/building.py:1102–1125

(wasm_file)

def read_name_section(wasm_file):
  with webassembly.Module(wasm_file) as module:
    for section in module.sections():
      if section.type == webassembly.SecType.CUSTOM:
        module.seek(section.offset)
        if module.read_string() == 'name':
          name_map = {}
          # The name section is made up of sub-sections.
          # We are looking for the function names sub-section
          while module.tell() < section.offset + section.size:
            name_type = module.read_uleb()
            subsection_size = module.read_uleb()
            subsection_end = module.tell() + subsection_size
            if name_type == webassembly.NameType.FUNCTION:
              # We found the function names sub-section
              num_names = module.read_uleb()
              for _ in range(num_names):
                id = module.read_uleb()
                name = module.read_string()
                name_map[id] = name
              return name_map
            module.seek(subsection_end)

          return name_map


@ToolchainProfiler.profile()