regex_replace.c File Reference

VM opcode snippet for OP_REGEX_REPLACE (POSIX global replace). More...

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Functions
	if (str.type !=VAL_STRING||pattern.type !=VAL_STRING||repl.type !=VAL_STRING)
	free_value (repl)
	free_value (pattern)
	free_value (str)
	push_value (vm, out)

Variables
case	OP_REGEX_REPLACE
Value	pattern = pop_value(vm)
Value	str = pop_value(vm)
Value	out = make_string(str.s ? str.s : "")
	break

Detailed Description

VM opcode snippet for OP_REGEX_REPLACE (POSIX global replace).

Performs a global search-and-replace on the input string using a POSIX regular expression pattern and a replacement string. Backreferences in the replacement are not expanded (simple literal replacement).

Behavior (stack effects):

• Pops: replacement (string), pattern (string), input (string)
• Pushes: output (string) — the transformed string after replacing all matches; on invalid regex, the original input is returned unchanged.

Platform notes:

• On non-UNIX platforms (no POSIX regex), the original input string is returned unchanged.

Errors:

• If operands have invalid types, the VM prints a runtime type error and exits.

Example:

• pattern = "[0-9]+", repl = "#", input = "a1b22c" -> "a#b#c"

Definition in file regex_replace.c.

Function Documentation

free_value() [1/3]

free_value

(

pattern

)

free_value() [2/3]

free_value

(

repl

)

free_value() [3/3]

free_value

(

str

)

if()

if

(

str.type !

= VAL_STRING || pattern.type != VAL_STRING || repl.type != VAL_STRING

)

Definition at line 46 of file regex_replace.c.

push_value()

push_value	(	vm	,
		out	)

Variable Documentation

break

break

Definition at line 57 of file regex_replace.c.

OP_REGEX_REPLACE

case OP_REGEX_REPLACE

Definition at line 42 of file regex_replace.c.

out

Value out = make_string(str.s ? str.s : "")

Definition at line 52 of file regex_replace.c.

pattern

Value pattern = pop_value(vm)

Definition at line 44 of file regex_replace.c.

str

Value str = pop_value(vm)

Definition at line 45 of file regex_replace.c.