Merge branch 'main' into fallback-to-dynamic-function-mappings

Author: ZorinAnton

.gitignore

@@ -13,3 +13,4 @@ out/**
 */bin
 .metals
 .bloop
+.project

CHANGELOG.md

@@ -1,6 +1,16 @@
 Release Notes
 ---
 
+## [0.83.0](https://github.com/substrait-io/substrait-java/compare/v0.82.0...v0.83.0) (2026-03-08)
+
+### Features
+
+* **spark:** build and publish multi-variant targets ([#707](https://github.com/substrait-io/substrait-java/issues/707)) ([d3ce994](https://github.com/substrait-io/substrait-java/commit/d3ce9947cff8c53aebafbe0255e45df7dd371e95))
+
+### Bug Fixes
+
+* properly deprecate Time(stamp) in favor of PrecisionTime(stamp) ([#720](https://github.com/substrait-io/substrait-java/issues/720)) ([d4697f7](https://github.com/substrait-io/substrait-java/commit/d4697f7c0ee9b9e04b1561104e1036c25f16405b))
+
 ## [0.82.0](https://github.com/substrait-io/substrait-java/compare/v0.81.0...v0.82.0) (2026-03-02)
 
 ### Features

core/src/main/antlr/SubstraitLexer.g4

@@ -0,0 +1,132 @@
+lexer grammar SubstraitLexer;
+
+options {
+    caseInsensitive = true;
+}
+
+// Whitespace and comment handling
+LineComment   : '//' ~[\r\n]* -> channel(HIDDEN) ;
+BlockComment  : ( '/*' ( ~'*' | '*'+ ~[*/] ) '*'* '*/' ) -> channel(HIDDEN) ;
+Whitespace    : [ \t\r]+ -> channel(HIDDEN) ;
+
+fragment DIGIT: [0-9];
+
+// Syntactic keywords.
+If       : 'IF';
+Then     : 'THEN';
+Else     : 'ELSE';
+Func     : 'FUNC';
+
+// TYPES
+Boolean  : 'BOOLEAN';
+I8       : 'I8';
+I16      : 'I16';
+I32      : 'I32';
+I64      : 'I64';
+FP32     : 'FP32';
+FP64     : 'FP64';
+String   : 'STRING';
+Binary   : 'BINARY';
+Timestamp: 'TIMESTAMP';
+Timestamp_TZ: 'TIMESTAMP_TZ';
+Date     : 'DATE';
+Time     : 'TIME';
+Interval_Year: 'INTERVAL_YEAR';
+Interval_Day: 'INTERVAL_DAY';
+Interval_Compound: 'INTERVAL_COMPOUND';
+UUID     : 'UUID';
+Decimal  : 'DECIMAL';
+Precision_Time: 'PRECISION_TIME';
+Precision_Timestamp: 'PRECISION_TIMESTAMP';
+Precision_Timestamp_TZ: 'PRECISION_TIMESTAMP_TZ';
+FixedChar: 'FIXEDCHAR';
+VarChar  : 'VARCHAR';
+FixedBinary: 'FIXEDBINARY';
+Struct   : 'STRUCT';
+NStruct  : 'NSTRUCT';
+List     : 'LIST';
+Map      : 'MAP';
+UserDefined: 'U!';
+
+// short names for types
+Bool: 'BOOL';
+Str: 'STR';
+VBin: 'VBIN';
+Ts: 'TS';
+TsTZ: 'TSTZ';
+IYear: 'IYEAR';
+IDay: 'IDAY';
+ICompound: 'ICOMPOUND';
+Dec: 'DEC';
+PT: 'PT';
+PTs: 'PTS';
+PTsTZ: 'PTSTZ';
+FChar: 'FCHAR';
+VChar: 'VCHAR';
+FBin: 'FBIN';
+
+Any: 'ANY';
+AnyVar: Any [0-9];
+
+DoubleColon: '::';
+
+// MATH
+Plus            : '+';
+Minus           : '-';
+Asterisk        : '*';
+ForwardSlash    : '/';
+Percent         : '%';
+
+// COMPARE
+Eq       : '=';
+Ne       : '!=';
+Gte      : '>=';
+Lte      : '<=';
+Gt       : '>';
+Lt       : '<';
+Bang     : '!';
+
+// ORGANIZE
+OAngleBracket: Lt;
+CAngleBracket: Gt;
+OParen: '(';
+CParen: ')';
+OBracket: '[';
+CBracket: ']';
+Comma: ',';
+Colon: ':';
+QMark: '?';
+Hash: '#';
+Dot: '.';
+
+
+// OPERATIONS
+And      : 'AND';
+Or       : 'OR';
+Assign   : ':=';
+Arrow    : '->';
+
+
+
+fragment Int
+  : '1'..'9' Digit*
+  | '0'
+  ;
+
+fragment Digit
+  : '0'..'9'
+  ;
+
+Number
+  : '-'? Int
+  ;
+
+Identifier
+  : ('A'..'Z' | '_' | '$') ('A'..'Z' | '_' | '$' | Digit)*
+  ;
+
+Newline
+  : ( '\r' '\n'?
+    | '\n'
+    )
+  ;