add.c File Reference

Execute a bytecode program starting from the given entry point. More...

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Functions
	if ((a.type==VAL_INT||a.type==VAL_FLOAT) &&(b.type==VAL_INT||b.type==VAL_FLOAT))
else	if (a.type==VAL_STRING &&b.type==VAL_STRING)
	exit (1)

Variables
case	OP_ADD
Value	a = pop_value(vm)
	else
	break

Detailed Description

Execute a bytecode program starting from the given entry point.

Implements the OP_ADD opcode for arithmetic and string concatenation in the VM.

Sets up the initial frame and runs the main interpreter loop until there are no more frames. Honors debugger stepping/finish/continue requests and, when enabled, traps exit paths to enter a REPL via on_error_repl.

Parameters

vm	VM instance to run.
entry	Entry function bytecode (must not be NULL).

This file handles the OP_ADD instruction, which performs addition or concatenation depending on the types of the operands:

• Integers: Adds two integers.
• Strings: Concatenates two strings.
• Arrays: Concatenates two arrays.

Behavior:

• Pops two values from the stack.
• Performs the operation based on the types of the operands.
• Pushes the result back onto the stack.

Error Handling:

• Exits with an error if the operands are of incompatible types.
• Exits with an error if memory allocation fails during string concatenation.

Example: // Bytecode: OP_ADD // Stack before: [2, 3] // Stack after: [5]

Definition in file add.c.

Function Documentation

exit()

exit

(

1

)

if() [1/2]

if

(

(a.type==VAL_INT||a.type==VAL_FLOAT) &&(b.type==VAL_INT||b.type==VAL_FLOAT)

)

Definition at line 38 of file add.c.

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if() [2/2]

else if

(

a.

type = = VAL_STRING && b.type == VAL_STRING

)

Definition at line 52 of file add.c.

Variable Documentation

a

Value a = pop_value(vm)

Definition at line 37 of file add.c.

break

break

Definition at line 81 of file add.c.

else

else

Initial value:

{
fprintf(stderr, "Runtime type error: ADD expects both numbers, both strings, or both arrays, got %s and %s\n",
value_type_name(a.type), value_type_name(b.type))

Definition at line 76 of file add.c.

OP_ADD

case OP_ADD

Definition at line 35 of file add.c.