Collect XPath Matches as file:line Strings

Runs an XPath query against every parsed file from read_r_xml() and returns a "basename:line" string for each matching node, ready to use as a check's issues.

Usage

xpath_lints(parsed, xpath, label = NULL)

Arguments

parsed

A parsed-sources list from read_r_xml().

xpath

Character. An XPath 1.0 query, typically anchored on a SYMBOL_FUNCTION_CALL node.

label

Optional character. Appended in parentheses after each hit.

Value

A character vector of "basename:line" strings, empty if nothing matched.

See also

read_r_xml(), xpath_per_file(), undesirable_function_check().

Examples

pkg <- example_diagnose_scenario("code_examples/seed_setting_bad.R",
                                 show_content = FALSE)
parsed <- read_r_xml(pkg)
xpath_lints(parsed, "//SYMBOL_FUNCTION_CALL[text() = 'set.seed']")
#> [1] "seed_setting_bad.R:7"  "seed_setting_bad.R:15"