DBIS/HyriseSQLParser
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move initialization of SQLParserResult to SQLParser from bison_parser

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This commit is contained in:
Pedro Flemming 2017-04-07 16:07:14 +02:00
parent 9e558c7d22
commit 074c564cc4
2 changed files with 22 additions and 18 deletions
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5
src/SQLParser.cpp
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@ -13,20 +13,21 @@ namespace hsql {
}
SQLParserResult* SQLParser::parseSQLString(const char* text) {
SQLParserResult* result = NULL;
SQLParserResult* result = new SQLParserResult();
yyscan_t scanner;
YY_BUFFER_STATE state;
if (hsql_lex_init(&scanner)) {
// Couldn't initialize the lexer.
fprintf(stderr, "[Error] SQLParser: Error when initializing lexer!\n");
delete result;
return NULL;
}
state = hsql__scan_string(text, scanner);
// Parser and return early if it failed.
if (hsql_parse(&result, scanner)) {
if (hsql_parse(result, scanner)) {
// Returns an error stmt object.
hsql__delete_buffer(state, scanner);
hsql_lex_destroy(scanner);

35
src/parser/bison_parser.y
View File

@ -18,14 +18,9 @@
using namespace hsql;
int yyerror(YYLTYPE* llocp, SQLParserResult** result, yyscan_t scanner, const char *msg) {
delete *result;
SQLParserResult* list = new SQLParserResult();
list->setIsValid(false);
list->setErrorDetails(strdup(msg), llocp->first_line, llocp->first_column);
*result = list;
int yyerror(YYLTYPE* llocp, SQLParserResult* result, yyscan_t scanner, const char *msg) {
result->setIsValid(false);
result->setErrorDetails(strdup(msg), llocp->first_line, llocp->first_column);
return 0;
}
@ -90,7 +85,7 @@ int yyerror(YYLTYPE* llocp, SQLParserResult** result, yyscan_t scanner, const ch
%lex-param { yyscan_t scanner }
// Define additional parameters for yyparse
%parse-param { hsql::SQLParserResult** result }
%parse-param { hsql::SQLParserResult* result }
%parse-param { yyscan_t scanner }
@ -124,7 +119,7 @@ int yyerror(YYLTYPE* llocp, SQLParserResult** result, yyscan_t scanner, const ch
hsql::GroupByDescription* group_t;
hsql::UpdateClause* update_t;
hsql::SQLParserResult* stmt_list;
std::vector<hsql::SQLStatement*>* stmt_vec;
std::vector<char*>* str_vec;
std::vector<hsql::TableRef*>* table_vec;
@ -147,7 +142,7 @@ int yyerror(YYLTYPE* llocp, SQLParserResult** result, yyscan_t scanner, const ch
}
}
delete ($$);
} <str_vec> <table_vec> <column_vec> <update_vec> <expr_vec> <order_vec>
} <str_vec> <table_vec> <column_vec> <update_vec> <expr_vec> <order_vec> <stmt_vec>
%destructor { delete ($$); } <*>
@ -178,7 +173,7 @@ int yyerror(YYLTYPE* llocp, SQLParserResult** result, yyscan_t scanner, const ch
/*********************************
** Non-Terminal types (http://www.gnu.org/software/bison/manual/html_node/Type-Decl.html)
*********************************/
%type <stmt_list> statement_list
%type <stmt_vec> statement_list
%type <statement> statement preparable_statement
%type <exec_stmt> execute_statement
%type <prep_stmt> prepare_statement
@ -243,14 +238,18 @@ int yyerror(YYLTYPE* llocp, SQLParserResult** result, yyscan_t scanner, const ch
// Defines our general input.
input:
statement_list opt_semicolon {
*result = $1;
for (SQLStatement* stmt : *$1) {
// Transfers ownership of the statement.
result->addStatement(stmt);
}
delete $1;
}
;
statement_list:
statement { $$ = new SQLParserResult($1); }
| statement_list ';' statement { $1->addStatement($3); $$ = $1; }
statement { $$ = new std::vector<SQLStatement*>(); $$->push_back($1); }
| statement_list ';' statement { $1->push_back($3); $$ = $1; }
;
statement:
@ -288,7 +287,11 @@ prepare_statement:
| PREPARE IDENTIFIER '{' statement_list opt_semicolon '}' {
$$ = new PrepareStatement();
$$->name = $2;
$$->query = $4;
$$->query = new SQLParserResult();
for (SQLStatement* stmt : *$4) {
$$->query->addStatement(stmt);
}
delete $4;
}
;