Method parse2

src/fl/stl/json.cpp.hpp:1084–1100

PARSE2 IMPLEMENTATION - Milestone 8: Two-phase parser with validation

// PARSE2 IMPLEMENTATION - Milestone 8: Two-phase parser with validation
fl::shared_ptr<json_value> json_value::parse2(const fl::string& txt) {
    JsonTokenizer tokenizer;

    // Phase 1: Validate
    JsonValidator validator;
    if (!tokenizer.parse(txt, validator) || !validator.is_valid()) {
        return fl::make_shared<json_value>(nullptr);
    }

    // Phase 2: Build
    JsonBuilder builder;
    if (!tokenizer.parse(txt, builder)) {
        return fl::make_shared<json_value>(nullptr);
    }

    return builder.get_result();
}

// Phase 1 validation only (for testing - MUST allocate zero heap memory)
bool json_value::parse2_validate_only(const fl::string& txt) {