added location tracking to parser

src/lib/statements/SQLStatement.h

@@ -57,6 +57,8 @@ public:
 
 	bool isValid;
 	const char* parser_msg;
+	int error_line;
+	int error_col;
 };
 
 

src/parser/bison_parser.y

@@ -19,13 +19,15 @@
 
 using namespace hsql;
 
-int yyerror(SQLStatementList** result, yyscan_t scanner, const char *msg) {
+int yyerror(YYLTYPE* llocp, SQLStatementList** result, yyscan_t scanner, const char *msg) {
 
 	SQLStatementList* list = new SQLStatementList();
 	list->isValid = false;
 	list->parser_msg = strdup(msg);
+	list->error_line = llocp->first_line;
+	list->error_col = llocp->first_column;
+	
 	*result = list;
-
 	return 0;
 }
 
@@ -47,6 +49,8 @@ int yyerror(SQLStatementList** result, yyscan_t scanner, const char *msg) {
 %define api.token.prefix {SQL_}
 
 %define parse.error verbose
+%locations
+
 
 // Specify code that is included in the generated .h and .c files
 %code requires {
@@ -57,6 +61,21 @@ typedef void* yyscan_t;
 #endif
 
 #define YYSTYPE HSQL_STYPE
+#define YYLTYPE HSQL_LTYPE
+
+
+#define YY_USER_ACTION \
+    yylloc->first_line = yylloc->last_line; \
+    yylloc->first_column = yylloc->last_column; \
+    for(int i = 0; yytext[i] != '\0'; i++) { \
+        if(yytext[i] == '\n') { \
+            yylloc->last_line++; \
+            yylloc->last_column = 0; \
+        } \
+        else { \
+            yylloc->last_column++; \
+        } \
+    }
 
 }
 
@@ -114,26 +133,27 @@ typedef void* yyscan_t;
 %token <uval> NOTEQUALS LESSEQ GREATEREQ
 
 /* SQL Keywords */
-%token PARAMETERS INTERSECT TEMPORARY TIMESTAMP DISTINCT
+%token DEALLOCATE PARAMETERS INTERSECT TEMPORARY TIMESTAMP
-%token NVARCHAR RESTRICT TRUNCATE ANALYZE BETWEEN CASCADE
+%token DISTINCT NVARCHAR RESTRICT TRUNCATE ANALYZE BETWEEN
-%token COLUMNS CONTROL DEFAULT EXPLAIN HISTORY INTEGER
+%token CASCADE COLUMNS CONTROL DEFAULT EXECUTE EXPLAIN
-%token NATURAL PRIMARY SCHEMAS SPATIAL VIRTUAL BEFORE COLUMN
+%token HISTORY INTEGER NATURAL PREPARE PRIMARY SCHEMAS
-%token CREATE DELETE DIRECT DOUBLE ESCAPE EXCEPT EXISTS
+%token SPATIAL VIRTUAL BEFORE COLUMN CREATE DELETE DIRECT
-%token GLOBAL HAVING IMPORT INSERT ISNULL OFFSET RENAME
+%token DOUBLE ESCAPE EXCEPT EXISTS GLOBAL HAVING IMPORT
-%token SCHEMA SELECT SORTED TABLES UNIQUE UNLOAD UPDATE
+%token INSERT ISNULL OFFSET RENAME SCHEMA SELECT SORTED
-%token VALUES AFTER ALTER CROSS DELTA GROUP INDEX INNER
+%token TABLES UNIQUE UNLOAD UPDATE VALUES AFTER ALTER CROSS
-%token LIMIT LOCAL MERGE MINUS ORDER OUTER RIGHT TABLE UNION
+%token DELTA GROUP INDEX INNER LIMIT LOCAL MERGE MINUS ORDER
-%token USING WHERE CALL DATE DESC DROP FILE FROM FULL HASH
+%token OUTER RIGHT TABLE UNION USING WHERE CALL DATE DESC
-%token INTO JOIN LEFT LIKE LOAD NULL PART PLAN SHOW TEXT
+%token DROP FILE FROM FULL HASH HINT INTO JOIN LEFT LIKE
-%token TIME VIEW WITH ADD ALL AND ASC CSV FOR INT KEY NOT OFF
+%token LOAD NULL PART PLAN SHOW TEXT TIME VIEW WITH ADD ALL
-%token SET TBL TOP AS BY IF IN IS OF ON OR TO
+%token AND ASC CSV FOR INT KEY NOT OFF SET TBL TOP AS BY IF
+%token IN IS OF ON OR TO
 
 
 /*********************************
  ** Non-Terminal types (http://www.gnu.org/software/bison/manual/html_node/Type-Decl.html)
  *********************************/
 %type <stmt_list>	statement_list
-%type <statement> 	statement
+%type <statement> 	statement preparable_statement prepare_statement
 %type <select_stmt> select_statement select_with_paren select_no_paren select_clause
 %type <import_stmt> import_statement
 %type <create_stmt> create_statement
@@ -200,6 +220,12 @@ statement_list:
 	;
 
 statement:
+		preparable_statement
+	|	prepare_statement
+	;
+
+
+preparable_statement:
 		select_statement { $$ = $1; }
 	|	import_statement { $$ = $1; }
 	|	create_statement { $$ = $1; }
@@ -211,6 +237,14 @@ statement:
 	;
 
 
+/******************************
+ * Prepared Statement
+ ******************************/
+prepare_statement:
+		PREPARE IDENTIFIER ':' preparable_statement { $$ = NULL; }
+	;
+
+
 
 /******************************
  * Import Statement

src/parser/flex_lexer.l

@@ -39,6 +39,7 @@
 %option warn
 %option case-insensitive
 %option prefix="hsql_"
+%option bison-locations 
 /* %option nodefault */
 
 
@@ -58,6 +59,7 @@
 
 
 
+DEALLOCATE	TOKEN(DEALLOCATE)
 PARAMETERS	TOKEN(PARAMETERS)
 INTERSECT	TOKEN(INTERSECT)
 TEMPORARY	TOKEN(TEMPORARY)
@@ -72,10 +74,12 @@ CASCADE		TOKEN(CASCADE)
 COLUMNS		TOKEN(COLUMNS)
 CONTROL		TOKEN(CONTROL)
 DEFAULT		TOKEN(DEFAULT)
+EXECUTE		TOKEN(EXECUTE)
 EXPLAIN		TOKEN(EXPLAIN)
 HISTORY		TOKEN(HISTORY)
 INTEGER		TOKEN(INTEGER)
 NATURAL		TOKEN(NATURAL)
+PREPARE		TOKEN(PREPARE)
 PRIMARY		TOKEN(PRIMARY)
 SCHEMAS		TOKEN(SCHEMAS)
 SPATIAL		TOKEN(SPATIAL)
@@ -130,6 +134,7 @@ FILE		TOKEN(FILE)
 FROM		TOKEN(FROM)
 FULL		TOKEN(FULL)
 HASH		TOKEN(HASH)
+HINT		TOKEN(HINT)
 INTO		TOKEN(INTO)
 JOIN		TOKEN(JOIN)
 LEFT		TOKEN(LEFT)
@@ -172,7 +177,7 @@ TO			TOKEN(TO)
 ">="		TOKEN(GREATEREQ)
 
 
-[-+*/(),.;<>=^%]	{ return yytext[0]; }
+[-+*/(),.;<>=^%:?]	{ return yytext[0]; }
 
 
 [0-9]+"."[0-9]* |
@@ -204,7 +209,7 @@ TO			TOKEN(TO)
 	return SQL_STRING;
 }
 
-
+. { fprintf(stderr, "[SQL-Lexer-Error] Unknown Character: %c\n", yytext[0]); return 0; }
 
 
 %%
@@ -213,5 +218,5 @@ TO			TOKEN(TO)
  ***************************/
 
 int yyerror(const char *msg) {
-    fprintf(stderr, "[Error] SQL Lexer: %s\n",msg); return 0;
+    fprintf(stderr, "[SQL-Lexer-Error] %s\n",msg); return 0;
 }

src/parser/sql_keywords.txt

@@ -101,6 +101,11 @@ UNLOAD
 
 DELETE
 
+// Prepared Statements
+DEALLOCATE
+PREPARE
+EXECUTE
+
 ///////////////////////////////
 // other statements
 RENAME
@@ -138,6 +143,7 @@ ESCAPE
 
 // With
 WITH
+HINT
 PARAMETERS
 ON
 OFF

src/sql_grammar_test.cpp

@@ -76,7 +76,7 @@ int main(int argc, char *argv[]) {
 
         if (expect_false == stmt_list->isValid) {
             printf("\033[0;31m{  failed}\033[0m\n");
-            printf("\t\033[0;31m%s\n\033[0m", stmt_list->parser_msg);
+            printf("\t\033[0;31m%s (L%d:%d)\n\033[0m", stmt_list->parser_msg, stmt_list->error_line, stmt_list->error_col);
             printf("\t%s\n", sql.c_str());
             num_failed++;
         } else {

test/valid_queries.sql

@@ -29,4 +29,7 @@ UPDATE students SET grade = 1.3 WHERE name = 'Max Mustermann';
 UPDATE students SET grade = 1.3, name='Felix Fürstenberg' WHERE name = 'Max Mustermann';
 UPDATE students SET grade = 1.0;
 # DROP
-DROP TABLE students;
+DROP TABLE students;
+# PREPARE
+PREPARE prep_inst: INSERT INTO test VALUES (?, ?, ?); SELECT * FROM test;
+EXECUTE prep_inst(1, 2, 3);