Use | more judiciously

R/function_argument_linter.R

@@ -46,14 +46,14 @@
 #' - <https://design.tidyverse.org/required-no-defaults.html>
 #' @export
 function_argument_linter <- function() {
-  xpath <- paste(collapse = " | ", glue::glue("
-  //{c('FUNCTION', 'OP-LAMBDA')}
+  xpath <- "
+  (//FUNCTION | //OP-LAMBDA)
     /following-sibling::EQ_FORMALS[1]
     /following-sibling::SYMBOL_FORMALS[
       text() != '...'
       and not(following-sibling::*[not(self::COMMENT)][1][self::EQ_FORMALS])
     ]
-  "))
+  "
 
   Linter(function(source_expression) {
     if (!is_lint_level(source_expression, "expression")) {

R/indentation_linter.R

@@ -175,15 +175,16 @@ indentation_linter <- function(indent = 2L, hanging_indent_style = c("tidy", "al
     ")"
   )
 
+  global_nodes <- function(nodes) paste0("//", nodes, collapse = "|") # nolint: object_usage. TODO(#2029): Fix this.
   xp_indent_changes <- paste(
     c(
       glue::glue("//{paren_tokens_left}[not(@line1 = following-sibling::expr[
                     @line2 > @line1 and
                     ({xp_or(paste0('descendant::', paren_tokens_left, '[', xp_last_on_line, ']'))})
                   ]/@line1)]"),
-      glue::glue("//{infix_tokens}[{xp_last_on_line}{infix_condition}]"),
-      glue::glue("//{no_paren_keywords}[{xp_last_on_line}]"),
-      glue::glue("//{keyword_tokens}/following-sibling::OP-RIGHT-PAREN[
+      glue::glue("({ global_nodes(infix_tokens) })[{xp_last_on_line}{infix_condition}]"),
+      glue::glue("({ global_nodes(no_paren_keywords) })[{xp_last_on_line}]"),
+      glue::glue("({ global_nodes(keyword_tokens) })/following-sibling::OP-RIGHT-PAREN[
                     {xp_last_on_line} and
                     not(following-sibling::expr[1][OP-LEFT-BRACE])
                   ]")

R/infix_spaces_linter.R

@@ -147,7 +147,8 @@
   # NB: parent::*[count(expr | SYMBOL_SUB)) > 1] for the unary case, e.g. x[-1]
   #  SYMBOL_SUB for case with missing argument like alist(a =)
   # NB: the last not() disables lints inside box::use() declarations
-  xpath <- paste(collapse = "|", glue::glue("//{infix_tokens}[
+  global_xpath <- paste0('//', infix_tokens, collapse = '|')
+  xpath <- glue::glue("({global_xpath})[
     parent::*[count(expr | SYMBOL_SUB) > 1]
     and (
       (
@@ -166,7 +167,7 @@
         ]
       ]
     )
-  ]"))
+  ]")
 
   Linter(function(source_expression) {
     if (!is_lint_level(source_expression, "expression")) {

R/pipe_continuation_linter.R

@@ -53,19 +53,17 @@ pipe_continuation_linter <- function() {
   # Where a single-line pipeline is nested inside a larger expression
   #   e.g. inside a function definition), the outer expression can span multiple lines
   #   without throwing a lint.
-
-  pipe_conditions <- "
+  preceding_pipe <- "preceding-sibling::expr[1]/descendant::*[self::SPECIAL[text() = '%>%'] or self::PIPE]"
+  xpath <- glue::glue("
+  (//PIPE | //SPECIAL[text() = '%>%'])[
     parent::expr[@line1 < @line2]
-    and preceding-sibling::expr/descendant-or-self::*[self::SPECIAL[text() = '%>%'] or self::PIPE]
+    and {preceding_pipe}
     and (
-      preceding-sibling::expr/descendant-or-self::expr/@line2
-      = following-sibling::expr/descendant-or-self::expr/@line1
-      or @line1 = preceding-sibling::expr/descendant-or-self::*[self::SPECIAL[text() = '%>%'] or self::PIPE]/@line1
+      preceding-sibling::expr[1]/descendant-or-self::expr/@line2
+      = following-sibling::expr[1]/descendant-or-self::expr/@line1
+      or @line1 = {preceding_pipe}/@line1
     )
-  "
-  xpath <- glue::glue("
-  //SPECIAL[text() = '%>%' and {pipe_conditions} ]
-  | //PIPE[ {pipe_conditions} ]
+  ]
   ")
 
   Linter(function(source_expression) {

R/redundant_equals_linter.R

@@ -36,11 +36,12 @@
 #' - [outer_negation_linter()]
 #' @export
 redundant_equals_linter <- function() {
-  xpath <- paste0(
-    c("//EQ", "//NE"),
-    "/parent::expr/expr[NUM_CONST[text() = 'TRUE' or text() = 'FALSE']]/parent::expr",
-    collapse = " | "
-  )
+  xpath <- "
+  (//EQ | //NE)
+    /parent::expr
+    /expr[NUM_CONST[text() = 'TRUE' or text() = 'FALSE']]
+    /parent::expr
+  "
 
   Linter(function(source_expression) {
     if (!is_lint_level(source_expression, "expression")) {

R/vector_logic_linter.R

@@ -60,8 +60,8 @@ vector_logic_linter <- function() {
   #     <expr> ... </expr>
   #  </expr>
   #  we _don't_ want to match anything on the second expr, hence this
-  xpath_parts <- glue::glue("
-  //{ c('AND', 'OR') }[
+  xpath <- "
+  (//AND | //OR)[
     ancestor::expr[
       not(preceding-sibling::OP-RIGHT-PAREN)
       and preceding-sibling::*[
@@ -75,8 +75,7 @@ vector_logic_linter <- function() {
       or preceding-sibling::OP-LEFT-BRACKET
     ])
   ]
-  ")
-  xpath <- paste(xpath_parts, collapse = " | ")
+  "
 
   Linter(function(source_expression) {
     if (!is_lint_level(source_expression, "expression")) {