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Implement IS_DEFINED function

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This commit is contained in:
Pijus Kamandulis
2024-02-19 00:08:51 +02:00
parent c17509df38
commit f4dd150bc8
8 changed files with 634 additions and 402 deletions
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11
parsers/nosql/nosql.peg
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@@ -15,6 +15,8 @@ func makeSelectStmt(columns, table, whereClause interface{}, count interface{},
selectStmt.Filters = filters
} else if filters, ok := whereClause.(parsers.Constant); ok {
selectStmt.Filters = filters
} else if filters, ok := whereClause.(parsers.SelectItem); ok {
selectStmt.Filters = filters
}
if n, ok := count.(int); ok {
@@ -186,7 +188,7 @@ SelectProperty <- name:Identifier path:(DotFieldAccess / ArrayFieldAccess)* {
return makeSelectItem(name, path, parsers.SelectItemTypeField)
}
SelectItem <- selectItem:(Literal / StringEqualsExpression / SelectArray / SelectObject / SelectProperty) asClause:AsClause? {
SelectItem <- selectItem:(Literal / FunctionCall / SelectArray / SelectObject / SelectProperty) asClause:AsClause? {
var itemResult parsers.SelectItem
switch typedValue := selectItem.(type) {
case parsers.SelectItem:
@@ -240,6 +242,7 @@ ComparisonExpression <- "(" ws ex:OrExpression ws ")" { return ex, nil }
/ left:SelectItem ws op:ComparisonOperator ws right:SelectItem {
return parsers.ComparisonExpression{Left:left,Right:right,Operation:string(op.([]uint8))}, nil
} / ex:BooleanLiteral { return ex, nil }
/ ex:SelectItem { return ex, nil }
OrderByClause <- OrderBy ws ex1:OrderExpression others:(ws "," ws ex:OrderExpression { return ex, nil })* {
return makeOrderByClause(ex1, others)
@@ -303,10 +306,16 @@ BooleanLiteral <- ("true"i / "false"i) {
return parsers.Constant{Type: parsers.ConstantTypeBoolean, Value: boolValue}, nil
}
FunctionCall <- StringEqualsExpression / IsDefined
StringEqualsExpression <- StringEquals ws "(" ws ex1:SelectItem ws "," ws ex2:SelectItem ws ignoreCase:("," ws boolean:SelectItem { return boolean, nil })? ")" {
return parsers.FunctionCall{Type: parsers.FunctionCallStringEquals, Arguments: []interface{}{ex1, ex2, ignoreCase}}, nil
}
IsDefined <- "IS_DEFINED"i ws "(" ws ex:SelectItem ws ")" {
return parsers.FunctionCall{Type: parsers.FunctionCallIsDefined, Arguments: []interface{}{ex}}, nil
}
Integer <- [0-9]+ {
return strconv.Atoi(string(c.text))
}