(call)

method calls

(call receiver? args?)

Where:

1. receiver: method name being called (the foo in foo()) *
2. args: arguments supplied to the call *

Matching:

1. regular calls, e.g. foo()
2. calls with receivers, e.g. obj.foo()
3. calls without parentheses, e.g. foo x

Behavior

• Receiver matching only supports identifier method names (operator methods like + are not supported).

Examples

Find shell-outs that pass string commands.

(call (id system) (arg 1 (str)))

Selects in lines { 1, 3 } but not in { 2 }:

system("ls -la")
system(cmd)
Kernel.system("whoami")

---

Locate puts calls that print debug strings.

(call (id puts) (arg 1 (str /^DEBUG:/)))

Selects in lines { 1 } but not in { 2, 3 }:

puts "DEBUG: start"
puts "INFO: start"
logger.info("DEBUG: start")

---

Find gsub calls that replace spaces with underscores.

(call (id gsub) (:and (arg 1 (str " ")) (arg 2 (str "_"))))

Selects in lines { 1 } but not in { 2, 3 }:

title.gsub(" ", "_")
title.gsub("-", "_")
name.sub(" ", "_")

---

Arguments

receiver

• Identifier: shorthand for (id)
• Pattern: shorthand for (id)
• (:kind) • (:ref) • (:text) • (call) • (id) • (num) • (proc) • (str) • (:into) • (:and) • (:or) • (:not) • (:replace) • (:capture)

args

• (arg)
• (:into) • (:and) • (:or) • (:not) • (:text) • (:kind) • (:replace) • (:capture)