Walk all expressions in a code string

Parses the code and walks each top-level expression with the visitor.

Usage

walk_code(code, visitor)

Arguments

code

Character(1). R code to parse and walk.

visitor

A visitor list (see walk_ast()).

Value

A list of accumulated findings from all top-level expressions.

Examples

# Find all function calls in a code string
visitor <- list(
  on_call = function(expr, fn_name, depth) fn_name
)
walk_code("x <- mean(1:10)\ny <- sum(x)", visitor)
#> [[1]]
#> [1] "<-"
#> 
#> [[2]]
#> [1] "mean"
#> 
#> [[3]]
#> [1] ":"
#> 
#> [[4]]
#> [1] "<-"
#> 
#> [[5]]
#> [1] "sum"
#>