find.c File Reference

Implements the OP_FIND opcode for finding substrings in the VM. More...

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Functions
	if (hay.type !=VAL_STRING||needle.type !=VAL_STRING)
	free_value (hay)
	free_value (needle)
	push_value (vm, make_int(idx))

Variables
case	OP_FIND
Value	hay = pop_value(vm)
int	idx = bi_find(&hay, &needle)
	break

Detailed Description

Implements the OP_FIND opcode for finding substrings in the VM.

This file handles the OP_FIND instruction, which finds the index of a substring within a string. The substring and string are popped from the stack, and the index (or -1) is pushed back.

Behavior:

• Pops the substring and string from the stack.
• Finds the index of the substring within the string.
• Pushes the index (or -1 if not found) onto the stack.

Error Handling:

• Exits with an error if the operands are not strings.

Example: // Bytecode: OP_FIND // Stack before: ["world", "hello world"] // Stack after: [6]

Author

Johannes Findeisen

Date

2025-10-16

Definition in file find.c.

Function Documentation

free_value() [1/2]

free_value

(

hay

)

free_value() [2/2]

free_value

(

needle

)

if()

if

(

hay.type !

= VAL_STRING || needle.type != VAL_STRING

)

Definition at line 38 of file find.c.

push_value()

push_value	(	vm	,
		make_int(idx)	)

Variable Documentation

break

break

Definition at line 46 of file find.c.

hay

Value hay = pop_value(vm)

Definition at line 37 of file find.c.

idx

int idx = bi_find(&hay, &needle)

Definition at line 42 of file find.c.

OP_FIND

case OP_FIND

Definition at line 35 of file find.c.