◆ on_token()

ParseState fl::anonymous_namespace{json.cpp.hpp}::JsonValidator::on_token	(	JsonToken	token,
		const fl::span< const char > &	value )
inlineoverridevirtual
Implements fl::anonymous_namespace{json.cpp.hpp}::JsonVisitor.
Definition at line 532 of file json.cpp.hpp.
                                                                                   {
        (void)value;  // Suppress unused parameter warning
 
        // Recursion depth check
        if (mDepth > MAX_JSON_DEPTH) {
            FL_ERROR("JSON parser: FATAL - recursion depth exceeded %s", MAX_JSON_DEPTH);
            return ParseState::ERROR;
        }
 
        switch (token) {
            case JsonToken::LBRACE:
                mBracketStack.push_back('{');
                mDepth++;
                mExpectKey = true;
                mExpectValue = false;
                return ParseState::KEEP_GOING;
 
            case JsonToken::RBRACE:
                if (mBracketStack.empty() || mBracketStack.back() != '{') {
                    return ParseState::ERROR;  // Unmatched closing brace
                }
                mBracketStack.pop_back();
                mDepth--;
                mExpectKey = false;
                return ParseState::KEEP_GOING;
 
            case JsonToken::LBRACKET:
                mBracketStack.push_back('[');
                mDepth++;
                mExpectValue = true;
                return ParseState::KEEP_GOING;
 
            case JsonToken::RBRACKET:
                if (mBracketStack.empty() || mBracketStack.back() != '[') {
                    return ParseState::ERROR;  // Unmatched closing bracket
                }
                mBracketStack.pop_back();
                mDepth--;
                mExpectValue = false;
                return ParseState::KEEP_GOING;
 
            case JsonToken::COLON:
                if (!mExpectColon) {
                    return ParseState::ERROR;  // Unexpected colon
                }
                mExpectColon = false;
                mExpectValue = true;
                return ParseState::KEEP_GOING;
 
            case JsonToken::STRING:
                if (!mBracketStack.empty() && mBracketStack.back() == '{' && mExpectKey) {
                    // This is an object key
                    mExpectKey = false;
                    mExpectColon = true;
                } else if (mExpectValue || mBracketStack.empty()) {
                    // This is a value
                    mExpectValue = false;
                } else {
                    return ParseState::ERROR;
                }
                return ParseState::KEEP_GOING;
 
            case JsonToken::NUMBER:
            case JsonToken::TRUE:
            case JsonToken::FALSE:
            case JsonToken::NULL_VALUE:
            // Specialized array tokens (complete arrays, treat as values)
            case JsonToken::ARRAY_UINT8:
            case JsonToken::ARRAY_INT16:
            case JsonToken::ARRAY_FLOAT:
                if (mExpectValue || mBracketStack.empty()) {
                    mExpectValue = false;
                    return ParseState::KEEP_GOING;
                }
                return ParseState::ERROR;
 
            case JsonToken::COMMA:
                // Set expectations for next element
                if (!mBracketStack.empty()) {
                    if (mBracketStack.back() == '{') {
                        mExpectKey = true;
                    } else {
                        mExpectValue = true;
                    }
                }
                return ParseState::KEEP_GOING;
 
            case JsonToken::END_OF_INPUT:
                return ParseState::KEEP_GOING;
 
            default:
                return ParseState::ERROR;
        }
    }