Parse an expression according to DataSHIELD syntax rules and returns an Abstract Syntaxic Tree (AST) node. — testParse • DSLite

Parse an expression according to DataSHIELD syntax rules and returns an Abstract Syntaxic Tree (AST) node.

testParse(expr, debug = FALSE)

Arguments

expr: Expression
debug: Parser debug logger activated

Value

An Abstract Syntaxic Tree node

Examples

if (FALSE) {
# a function call with a valid formula
ast <- testParse("someregression(D$height ~ D$diameter + D$length)")
# a function call with an invalid formula including a function call
testParse("someregression(D$height ~ D$diameter + poly(D$length,3,raw=TRUE))")
}