NAME

JSPL::SM::Opcode - Class that encapsulates SpiderMonkey's jsopcodes.

SYNOPSYS

use JSPL::SM::Opcode qw(:opcodes @Opcodes);

my $oppush = $Opcodes[JSOP_PUSH];
print $oppush->name;  # 'push'

DESCRIPTION

Provides access to SM's jsopcodes. Useful if you ever need to work with SpiderMonkey bytecode. See jsopcode.tbl is SM sources for details.

EXPORT TAGS

jof - The JOF_* constants in jsopcode.h.

opcodes - The JSOP_* enums in jsopcode.h.

INTERFACE

@Opcodes

This array hold the jsopcodes defined in SM. Every value is an JSPL::SM::Opcode object. You can use the JSOP_* constants for indexing @Opcodes.

INSTANCE METHODS

id

Returns the id of the jsopcode. For example "JSOP_PUSH"

val

Returns the number of the jsopcode, that is its index in @Opcodes.

name

Returns the name of the jsopcode. For example "push".

len

Returns the length of the jsopcode in bytes including any immediate operands, or -1 for jsopcodes with variable len.

uses

Returns the number of stack elements consumed by the jsopcode, -1 if variadic.

defs

Returns the number of stack elements produced by the jsopcode.

prec

Returns the operator precedence, zero if not an operator.

format

Returns the encoding format of the jsopcode.