vaclavt/usql
1
0
Fork 0
Code Issues Pull Requests Projects Releases Wiki Activity

initial support for is null and is not null

Browse Source 
will nedd some work, but just for now
This commit is contained in:
VaclavT
2021-09-08 18:34:11 +02:00
parent 0db976f471
commit 61f3af90af
6 changed files with 30 additions and 5 deletions
Download Patch File Download Diff File Expand all files Collapse all files

8
lexer.cpp
View File

@@ -104,7 +104,8 @@ namespace usql {
bool Lexer::isRelationalOperator(TokenType token_type) {
return (token_type == TokenType::equal || token_type == TokenType::not_equal ||
token_type == TokenType::greater || token_type == TokenType::greater_equal ||
token_type == TokenType::lesser || token_type == TokenType::lesser_equal);
token_type == TokenType::lesser || token_type == TokenType::lesser_equal ||
token_type == TokenType::is);
}
bool Lexer::isLogicalOperator(TokenType token_type) {
@@ -145,6 +146,8 @@ namespace usql {
return TokenType::lesser;
if (token == "<=")
return TokenType::lesser_equal;
if (token == "is")
return TokenType::is;
if (token == "as")
return TokenType::keyword_as;
if (token == "create")
@@ -321,6 +324,9 @@ namespace usql {
case TokenType::lesser_equal:
txt = "<=";
break;
case TokenType::is:
txt = "is";
break;
case TokenType::keyword_as:
txt = "as";
break;