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claude
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feat: add CosmosDB parser to monorepo (#35)
This commit adds the CosmosDB parser from the standalone cosmosdb-parser repository into the unified parser monorepo. Changes: - Added CosmosDB grammar files (CosmosDBLexer.g4, CosmosDBParser.g4) - Added test infrastructure with 5 example SQL files - Created Makefile for building and testing the parser - Updated package names from 'parser' to 'cosmosdb' - Updated import paths to github.com/bytebase/parser/cosmosdb - Updated CI workflow to include cosmosdb in the test matrix - Generated parser files using ANTLR 4 with Go target - All 5 tests passing successfully 🤖 Generated with [Claude Code](https://claude.com/claude-code) Co-authored-by: Claude <[email protected]>
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‎.github/workflows/tests.yml‎

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id: set-matrix
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run: |
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# List of all available parsers
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ALL_PARSERS="redshift postgresql cql snowflake tsql doris trino plsql googlesql mysql partiql tidb bq mariadb"
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ALL_PARSERS="redshift postgresql cql snowflake tsql doris trino plsql googlesql mysql partiql tidb bq mariadb cosmosdb"
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# Add more parsers here as they are added to the repository
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# ALL_PARSERS="redshift mysql postgresql"
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‎cosmosdb/CosmosDBLexer.g4‎

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lexer grammar CosmosDBLexer;
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options {
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caseInsensitive = true;
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}
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fragment A: [a];
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fragment B: [b];
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fragment C: [c];
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fragment D: [d];
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fragment E: [e];
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fragment F: [f];
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fragment G: [g];
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fragment H: [h];
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fragment I: [i];
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fragment J: [j];
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fragment K: [k];
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fragment L: [l];
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fragment M: [m];
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fragment N: [n];
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fragment O: [o];
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fragment P: [p];
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fragment Q: [q];
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fragment R: [r];
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fragment S: [s];
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fragment T: [t];
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fragment U: [u];
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fragment V: [v];
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fragment W: [w];
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fragment X: [x];
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fragment Y: [y];
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fragment Z: [z];
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MULTIPLY_OPERATOR: '*';
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AS_SYMBOL: 'AS';
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SELECT_SYMBOL: 'SELECT';
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FROM_SYMBOL: 'FROM';
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DISTINCT_SYMBOL: 'DISTINCT';
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UNDEFINED_SYMBOL: 'UNDEFINED';
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NULL_SYMBOL: 'NULL';
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FALSE_SYMBOL: 'FALSE';
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TRUE_SYMBOL: 'TRUE';
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NOT_SYMBOL: 'NOT';
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UDF_SYMBOL: 'UDF';
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WHERE_SYMBOL: 'WHERE';
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AND_SYMBOL: 'AND';
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OR_SYMBOL: 'OR';
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AT_SYMBOL: '@';
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LC_BRACKET_SYMBOL: '{';
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RC_BRACKET_SYMBOL: '}';
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LS_BRACKET_SYMBOL: '[';
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RS_BRACKET_SYMBOL: ']';
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LR_BRACKET_SYMBOL: '(';
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RR_BRACKET_SYMBOL: ')';
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SINGLE_QUOTE_SYMBOL: '\'';
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DOUBLE_QUOTE_SYMBOL: '"';
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COMMA_SYMBOL: ',';
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DOT_SYMBOL: '.';
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QUESTION_MARK_SYMBOL: '?';
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COLON_SYMBOL: ':';
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PLUS_SYMBOL: '+';
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MINUS_SYMBOL: '-';
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BIT_NOT_SYMBOL: '~';
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DIVIDE_SYMBOL: '/';
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MODULO_SYMBOL: '%';
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BIT_AND_SYMBOL: '&';
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BIT_OR_SYMBOL: '|';
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DOUBLE_BAR_SYMBOL: '||';
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BIT_XOR_SYMBOL: '^';
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EQUAL_SYMBOL: '=';
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/* Identifiers */
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IDENTIFIER: [a-z] [a-z_0-9]*;
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// White space handling
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WHITESPACE:
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[ \t\f\r\n] -> channel(HIDDEN); // Ignore whitespaces.
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// Decimal literal.
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fragment DEC_DIGIT: [0-9];
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fragment DEC_DOT_DEC: (
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DEC_DIGIT+ '.' DEC_DIGIT+
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| DEC_DIGIT+ '.'
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| '.' DEC_DIGIT+
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);
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DECIMAL: DEC_DIGIT+;
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REAL: (DECIMAL | DEC_DOT_DEC) ('E' [+-]? DEC_DIGIT+);
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FLOAT: DEC_DOT_DEC;
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// Hexadecimal literal.
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fragment HEX_DIGIT: [0-9A-F];
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HEXADECIMAL: '0' 'X' HEX_DIGIT+;
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fragment FullWidthLetter options {
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caseInsensitive = false;
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}:
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'\u00c0' ..'\u00d6'
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| '\u00d8' ..'\u00f6'
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| '\u00f8' ..'\u00ff'
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| '\u0100' ..'\u1fff'
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| '\u2c00' ..'\u2fff'
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| '\u3040' ..'\u318f'
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| '\u3300' ..'\u337f'
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| '\u3400' ..'\u3fff'
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| '\u4e00' ..'\u9fff'
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| '\ua000' ..'\ud7ff'
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| '\uf900' ..'\ufaff'
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| '\uff00' ..'\ufff0';
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// | '\u10000'..'\u1F9FF' //not support four bytes chars | '\u20000'..'\u2FA1F'
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// String literal.
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fragment ESCAPE_SEQUENCE:
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'\\' [btnrf"'\\/] // Basic escape sequences: \b, \t, \n, \r, \f, ", ', \, /
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| '\\u' HEX_DIGIT HEX_DIGIT HEX_DIGIT HEX_DIGIT; // Unicode escape: \uXXXX
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fragment STRING_CHAR:
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ESCAPE_SEQUENCE
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| ~[\\"'\r\n]; // Any Unicode character EXCEPT: \, ", ', \r, \n
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// String literals
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SINGLE_QUOTE_STRING_LITERAL:
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SINGLE_QUOTE_SYMBOL STRING_CHAR* SINGLE_QUOTE_SYMBOL;
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DOUBLE_QUOTE_STRING_LITERAL:
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DOUBLE_QUOTE_SYMBOL STRING_CHAR* DOUBLE_QUOTE_SYMBOL;

‎cosmosdb/CosmosDBParser.g4‎

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parser grammar CosmosDBParser;
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options {
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tokenVocab = CosmosDBLexer;
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}
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root: select EOF;
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select: select_clause from_clause where_clause?;
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select_clause: SELECT_SYMBOL select_specification;
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select_specification:
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MULTIPLY_OPERATOR
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| DISTINCT_SYMBOL? object_property_list;
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from_clause: FROM_SYMBOL from_specification;
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where_clause: WHERE_SYMBOL scalar_expression_in_where;
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from_specification: from_source;
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from_source: container_expression;
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container_expression: container_name (AS_SYMBOL? IDENTIFIER)?;
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container_name: IDENTIFIER;
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object_property_list:
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object_property (COMMA_SYMBOL object_property)*;
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object_property: scalar_expression (AS_SYMBOL? property_alias)?;
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property_alias: IDENTIFIER;
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// scalar_expression: https://learn.microsoft.com/en-us/azure/cosmos-db/nosql/query/scalar-expressions
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scalar_expression:
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input_alias
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| scalar_expression DOT_SYMBOL property_name
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| scalar_expression LS_BRACKET_SYMBOL (
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(DOUBLE_QUOTE_STRING_LITERAL)
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| (array_index)
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) RS_BRACKET_SYMBOL
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| unary_operator scalar_expression;
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// TODO(zp): Merge scalar_expression and scalar_expression_in_where while supporting the project
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// fully. https://learn.microsoft.com/en-us/azure/cosmos-db/nosql/query/scalar-expressions
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scalar_expression_in_where:
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constant
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| input_alias
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| parameter_name
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| scalar_expression_in_where AND_SYMBOL scalar_expression_in_where
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| scalar_expression_in_where OR_SYMBOL scalar_expression_in_where
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| scalar_expression_in_where DOT_SYMBOL property_name
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| scalar_expression_in_where LS_BRACKET_SYMBOL (
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(DOUBLE_QUOTE_STRING_LITERAL)
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| (array_index)
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) RS_BRACKET_SYMBOL
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| unary_operator scalar_expression_in_where
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| scalar_expression_in_where binary_operator scalar_expression_in_where
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| scalar_expression_in_where QUESTION_MARK_SYMBOL scalar_expression_in_where COLON_SYMBOL
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scalar_expression_in_where
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| scalar_function_expression
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| create_object_expression
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| create_array_expression
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| LR_BRACKET_SYMBOL scalar_expression_in_where RR_BRACKET_SYMBOL;
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create_array_expression: array_constant;
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create_object_expression: object_constant;
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scalar_function_expression:
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udf_scalar_function_expression
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| builtin_function_expression;
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udf_scalar_function_expression:
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UDF_SYMBOL DOT_SYMBOL IDENTIFIER LR_BRACKET_SYMBOL (
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scalar_expression_in_where (
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COMMA_SYMBOL scalar_expression_in_where
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)*
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) RR_BRACKET_SYMBOL;
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builtin_function_expression:
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IDENTIFIER LR_BRACKET_SYMBOL (
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scalar_expression_in_where (
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COMMA_SYMBOL scalar_expression_in_where
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)*
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) RR_BRACKET_SYMBOL;
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binary_operator:
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MULTIPLY_OPERATOR
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| DIVIDE_SYMBOL
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| MODULO_SYMBOL
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| PLUS_SYMBOL
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| MINUS_SYMBOL
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| BIT_AND_SYMBOL
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| BIT_XOR_SYMBOL
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| BIT_OR_SYMBOL
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| DOUBLE_BAR_SYMBOL
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| EQUAL_SYMBOL;
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unary_operator: BIT_NOT_SYMBOL | PLUS_SYMBOL | MINUS_SYMBOL;
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parameter_name: AT_SYMBOL IDENTIFIER;
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// https://learn.microsoft.com/en-us/azure/cosmos-db/nosql/query/constants
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constant:
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undefined_constant
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| null_constant
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| boolean_constant
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| number_constant
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| string_constant
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| array_constant
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| object_constant;
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object_constant:
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LC_BRACKET_SYMBOL (
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object_constant_field_pair (
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COMMA_SYMBOL object_constant_field_pair
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)*
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) RC_BRACKET_SYMBOL;
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object_constant_field_pair: (
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property_name
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| (DOUBLE_QUOTE_SYMBOL property_name DOUBLE_QUOTE_SYMBOL)
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) COMMA_SYMBOL constant;
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array_constant:
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LS_BRACKET_SYMBOL (constant (COMMA_SYMBOL constant)*)? RS_BRACKET_SYMBOL;
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string_constant: string_literal;
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undefined_constant: UNDEFINED_SYMBOL;
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null_constant: NULL_SYMBOL;
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boolean_constant: TRUE_SYMBOL | FALSE_SYMBOL;
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number_constant: decimal_literal | hexadecimal_literal;
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string_literal:
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SINGLE_QUOTE_STRING_LITERAL
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| DOUBLE_QUOTE_STRING_LITERAL;
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decimal_literal: DECIMAL | REAL | FLOAT;
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hexadecimal_literal: HEXADECIMAL;
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property_name: IDENTIFIER;
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array_index: DECIMAL;
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input_alias: IDENTIFIER;

‎cosmosdb/Makefile‎

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all: build test
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build:
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antlr -Dlanguage=Go -package cosmosdb -visitor -o . CosmosDBLexer.g4 CosmosDBParser.g4
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test:
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go test -v -run TestCosmosDBParser

‎cosmosdb/README.md‎

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# cosmosdb-parser
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Cosmos DB SQL parser based on ANTLR4.
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## References
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- [Queries in Azure Cosmos DB for NoSQL](https://learn.microsoft.com/en-us/azure/cosmos-db/nosql/query/)

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