Feat/spark g4 (#168)

* feat: spark g4 test

* fix: fixed build lint

---------

Co-authored-by: liuyi <[email protected]>
Co-authored-by: dilu <[email protected]>

Author: 3 people

src/grammar/spark/SparkSqlLexer.g4

@@ -26,52 +26,14 @@ lexer grammar SparkSqlLexer;
    */
   public has_unclosed_bracketed_comment = false;
 
-  /**
-   * Verify whether current token is a valid decimal token (which contains dot).
-   * Returns true if the character that follows the token is not a digit or letter or underscore.
-   *
-   * For example:
-   * For char stream "2.3", "2." is not a valid decimal token, because it is followed by digit '3'.
-   * For char stream "2.3_", "2.3" is not a valid decimal token, because it is followed by '_'.
-   * For char stream "2.3W", "2.3" is not a valid decimal token, because it is followed by 'W'.
-   * For char stream "12.0D 34.E2+0.12 "  12.0D is a valid decimal token because it is followed
-   * by a space. 34.E2 is a valid decimal token because it is followed by symbol '+'
-   * which is not a digit or letter or underscore.
-   */
-  public isValidDecimal() {
-    const nextChar = _input.LA(1);
-    if (nextChar >= 'A' && nextChar <= 'Z' || nextChar >= '0' && nextChar <= '9' ||
-      nextChar == '_') {
-      return false;
-    } else {
-      return true;
-    }
-  }
-
-  /**
-   * This method will be called when we see '/*' and try to match it as a bracketed comment.
-   * If the next character is '+', it should be parsed as hint later, and we cannot match
-   * it as a bracketed comment.
-   *
-   * Returns true if the next character is '+'.
-   */
-  public isHint() {
-    const nextChar = _input.LA(1);
-    if (nextChar == '+') {
-      return true;
-    } else {
-      return false;
-    }
-  }
-
   /**
    * This method will be called when the character stream ends and try to find out the
    * unclosed bracketed comment.
    * If the method be called, it means the end of the entire character stream match,
    * and we set the flag and fail later.
    */
   public markUnclosedComment() {
-    has_unclosed_bracketed_comment = true;
+    this.has_unclosed_bracketed_comment = true;
   }
 }
 
@@ -488,26 +450,26 @@ INTEGER_VALUE
 
 EXPONENT_VALUE
     : DIGIT+ EXPONENT
-    | DECIMAL_DIGITS EXPONENT {isValidDecimal()}?
+    | DECIMAL_DIGITS EXPONENT
     ;
 
 DECIMAL_VALUE
-    : DECIMAL_DIGITS {isValidDecimal()}?
+    : DECIMAL_DIGITS
     ;
 
 FLOAT_LITERAL
     : DIGIT+ EXPONENT? 'F'
-    | DECIMAL_DIGITS EXPONENT? 'F' {isValidDecimal()}?
+    | DECIMAL_DIGITS EXPONENT? 'F'
     ;
 
 DOUBLE_LITERAL
     : DIGIT+ EXPONENT? 'D'
-    | DECIMAL_DIGITS EXPONENT? 'D' {isValidDecimal()}?
+    | DECIMAL_DIGITS EXPONENT? 'D'
     ;
 
 BIGDECIMAL_LITERAL
     : DIGIT+ EXPONENT? 'BD'
-    | DECIMAL_DIGITS EXPONENT? 'BD' {isValidDecimal()}?
+    | DECIMAL_DIGITS EXPONENT? 'BD'
     ;
 
 IDENTIFIER
@@ -540,7 +502,7 @@ SIMPLE_COMMENT
     ;
 
 BRACKETED_COMMENT
-    : '/*' {!isHint()}? ( BRACKETED_COMMENT | . )*? ('*/' | {markUnclosedComment();} EOF) -> channel(HIDDEN)
+    : '/*' ( BRACKETED_COMMENT | . )*? ('*/' | {this.markUnclosedComment();} EOF) -> channel(HIDDEN)
     ;
 
 WS

src/grammar/spark/SparkSqlParser.g4

@@ -1166,11 +1166,15 @@ windowSpec
       RIGHT_PAREN
     ;
 
+/**
+* replace start identifier with start_ in grammar.
+* https://github.com/tunnelvisionlabs/antlr4ts/issues/417
+*/
 windowFrame
-    : frameType=KW_RANGE start=frameBound
-    | frameType=KW_ROWS start=frameBound
-    | frameType=KW_RANGE KW_BETWEEN start=frameBound KW_AND end=frameBound
-    | frameType=KW_ROWS KW_BETWEEN start=frameBound KW_AND end=frameBound
+    : frameType=KW_RANGE start_=frameBound
+    | frameType=KW_ROWS start_=frameBound
+    | frameType=KW_RANGE KW_BETWEEN start_=frameBound KW_AND end=frameBound
+    | frameType=KW_ROWS KW_BETWEEN start_=frameBound KW_AND end=frameBound
     ;
 
 frameBound

src/index.ts

@@ -8,13 +8,13 @@ export * from './lib/hive/HiveSqlParserListener';
 export * from './lib/hive/HiveSqlParserVisitor';
 export * from './lib/plsql/PlSqlParserListener';
 export * from './lib/plsql/PlSqlParserVisitor';
-export * from './lib/spark/SparkSqlVisitor';
-export * from './lib/spark/SparkSqlListener';
+export * from './lib/spark/SparkSqlParserVisitor';
+export * from './lib/spark/SparkSqlParserListener';
 export * from './lib/pgsql/PostgreSQLParserListener';
 export * from './lib/pgsql/PostgreSQLParserVisitor';
 export * from './lib/trinosql/TrinoSqlListener';
 export * from './lib/trinosql/TrinoSqlVisitor';
-export { SyntaxContextType } from './parser/common/basic-parser-types'
+export { SyntaxContextType } from './parser/common/basic-parser-types';
 
 
 export type * from './parser/common/basic-parser-types';