Function GetNumericIds

source/text.cpp:864–893

Collects all numeric ids in the module source into |numeric_ids|. This function is essentially a dry-run of spvTextToBinary.

// Collects all numeric ids in the module source into |numeric_ids|.
// This function is essentially a dry-run of spvTextToBinary.
spv_result_t GetNumericIds(const spvtools::AssemblyGrammar& grammar,
                           const spvtools::MessageConsumer& consumer,
                           const spv_text text,
                           std::set<uint32_t>* numeric_ids) {
  spvtools::AssemblyContext context(text, consumer);

  if (!text->str) return context.diagnostic() << "Missing assembly text.";

  // Skip past whitespace and comments.
  context.advance();

  while (context.hasText()) {
    spv_instruction_t inst;

    // Operand parsing sometimes involves knowing the opcode of the instruction
    // being parsed. A malformed input might feature such an operand *before*
    // the opcode is known. To guard against accessing an uninitialized opcode,
    // the instruction's opcode is initialized to a default value.
    inst.opcode = spv::Op::Max;

    if (spvTextEncodeOpcode(grammar, &context, &inst)) {
      return SPV_ERROR_INVALID_TEXT;
    }

    if (context.advance()) break;
  }

  *numeric_ids = context.GetNumericIds();
  return SPV_SUCCESS;
}

// Translates a given assembly language module into binary form.
// If a diagnostic is generated, it is not yet marked as being