aql_parser.cpp

aql_parser.cpp

Stand: 5. Dezember 2025
Version: 1.0.0
Kategorie: Src

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Path: src/query/aql_parser.cpp

Purpose: Parses AQL queries into AST. Should include grammar details and handling of FULLTEXT tokens.

Public functions / symbols:

• ``
• if (token.type != TokenType::INVALID) {
• if (ch == ' ') {
• if (ch == '"' || ch == '\'') {
• if (quote != '"' && quote != '\'') {
• switch (next) {
• switch (ch) {
• for (const auto& token : tokens_) {
• if (token.type == TokenType::INVALID) {
• if (lastTraversal_) {
• while (true) {
• if constexpr (std::is_same_v<T, std::nullptr_t>) {
• switch (op) {
• for (const auto& arg : arguments) {
• for (const auto& elem : elements) {
• for (const auto& [key, value] : fields) {
• skipWhitespace();
• advance();
• return readString(start_line, start_column);
• return readNumber(start_line, start_column);
• return readIdentifierOrKeyword(start_line, start_column);
• return readOperatorOrPunctuation(start_line, start_column);
• advance(); // Skip opening quote
• advance(); // Skip closing quote
• advance(); advance();
• return Token(TokenType::INVALID, "===", line, col);
• return Token(TokenType::EQ, "==", line, col);
• return Token(TokenType::NEQ, "!=", line, col);
• return Token(TokenType::LTE, "<=", line, col);
• return Token(TokenType::GTE, ">=", line, col);
• expect(TokenType::END_OF_FILE, "Expected end of query");
• expect(TokenType::FOR, "Expected FOR");
• advance(); // first '.'
• advance(); // second '.'
• expect(TokenType::GRAPH, "Expected GRAPH keyword in traversal");
• expect(TokenType::LET, "Expected LET");
• expect(TokenType::ASSIGN, "Expected '=' after variable name in LET");
• expect(TokenType::FILTER, "Expected FILTER");
• expect(TokenType::SORT, "Expected SORT");
• expect(TokenType::COMMA, "Expected comma");
• expect(TokenType::LIMIT, "Expected LIMIT");
• expect(TokenType::RETURN, "Expected RETURN");
• expect(TokenType::COLLECT, "Expected COLLECT");
• expect(TokenType::ASSIGN, "Expected '=' after group variable in COLLECT");
• expect(TokenType::ASSIGN, "Expected '=' in aggregation assignment");
• expect(TokenType::LPAREN, "Expected '(' after aggregation function");
• return parseLogicalOr();
• expect(TokenType::COLON, "Expected ':' after object key");
• expect(TokenType::RBRACE, "Expected '}' at end of object");
• advance(); // empty object {}