echo.c File Reference

Implements the OP_ECHO opcode for printing without a trailing newline. More...

Go to the source code of this file.

Functions
	free_value (v)
	if (vm->output_count< OUTPUT_SIZE)
	fprintf (stderr, "Runtime error: output buffer overflow\n")
	exit (1)

Variables
case	OP_ECHO
Value	snap = deep_copy_value(&v)
	else
	break

Detailed Description

Implements the OP_ECHO opcode for printing without a trailing newline.

This snippet is included into the VM dispatch loop and handles OP_ECHO. It pops the top value from the stack and appends it to the VM's output buffer but marks the entry as partial so that subsequent OP_PRINT may continue the same line.

Stack contract:

• Pops: value (any)
• Pushes: (none)

Definition in file echo.c.

Function Documentation

exit()

exit

(

1

)

fprintf()

fprintf	(	stderr	,
		"Runtime error: output buffer overflow\n"	)

free_value()

free_value

(

v

)

if()

if

(

)

Definition at line 30 of file echo.c.

Variable Documentation

break

break

Definition at line 40 of file echo.c.

else

else

Initial value:

{
free_value(snap)

Definition at line 35 of file echo.c.

OP_ECHO

case OP_ECHO

Definition at line 26 of file echo.c.

snap

Value snap = deep_copy_value(&v)

Definition at line 28 of file echo.c.