NAME

Parrot::Pmc2c - PMC to C Code Generation

SYNOPSIS

use Parrot::Pmc2c;

DESCRIPTION

Parrot::Pmc2c is used by tools/build/pmc2c.pl to generate C code from PMC files.

Functions

Class Methods

new($self, $opt)

Returns $self as a new instance.

$self is a hash reference eval-ed from a *.dump file generated by tools/build/pmc2c.pl from a *.pmc file. It is bless-ed either into Parrot::Pmc2c::Standard, or into one of the other special PMCs: default, delegate, Null, Ref or SharedRef.

$opt is a hash reference.

Instance Methods

does_write($method)

Returns true if the vtable method $method writes our value.

line_directive($self,$line,$file)

Generates the C pre processor string for a #line directive, or an empty string if $self-{opt}{nolines}> is true.

line_directive_here($self,$output,$file)

Generates the C pre processor string for a #line directive to reset the compiler's line number to the next physical line in the output.

make_constlike($type, $is_variant)

Create a variant for Const or RO.

make_const()

If the PMC had its const_too flag set then this method is called in init() to to create the read-only set methods.

make_ro()

If the PMC doesn't have const_too set (FIXME?) then this method is called to create the read-only set methods and vtable variant.

init()

Initializes the instance.

decl($classname, $method, $for_header, $unused)

Returns the C code for the PMC method declaration. $for_header indicates whether the code is for a header or implementation file. $unused indicates if the args should be all unsued.

includes()

Returns the C #include for the header file of each of the PMC's superclasses.

full_arguments($args)

Prepends INTERP, SELF to $args.

proto($type,$parameters)

Determines the prototype (argument signature) for a method body (see src/call_list).

rewrite_nci_method($self, $class, $method, $super, $super_table)

Rewrites the method body performing the various macro substitutions for nci method bodies (see tools/build/pmc2c.pl).

rewrite_vtable_method($self, $class, $method, $super, $super_table)

Rewrites the method body performing the various macro substitutions for vtable method bodies (see tools/build/pmc2c.pl).

body($method, $line, $out_name)

Returns the C code for the method body. $line is used to accumulate the number of lines, $out_name is the name of the output file we are generating.

methods($line, $out_name)

Returns the C code for the vtable methods. $line is used to accumulate the number of lines, $out_name is the name of the output file we are generating.

pmc_is_dynpmc

Determines if a given PMC type is dynamically loaded or not.

find_mmd_methods()

Returns three values:

The first is an arrayref of <[ mmd_number, left_type, right_type, implementation_func]> suitable for initializing the MMD list.

The second is a arrayref listing dynamic PMCs which will need to be looked up.

The third is a list of [index, dynamic PMC] pairs of right_type entries in the MMD table that will need to be resolved at runtime.

find_vtable_methods()

Returns an arrayref containing the vtable methods in the order they appear in the vtable.

vtable_decl($name)

Returns the C code for the declaration of a vtable temporary named $name with the functions for this class.

init_func()

Returns the C code for the PMC's initialization method, or an empty string if the PMC has a no_init flag.

gen_c($out_name)

Generates the C implementation file code for the PMC. $out_name is the name of the output file we are generating.

hdecls()

Returns the C code function declarations for all the methods for inclusion in the PMC's C header file.

TODO include MMD variants.

gen_h($out_name)

Generates the C header file code for the PMC. $out_name is the name of the output file we are generating.

implements($method)

True if this class generates code for the method $method.

implements_vtable($method)

True if this class generates code for VTABLE method $method.