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luastring.pmc
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luastring.pmc
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/*
Copyright (C) 2005-2009, Parrot Foundation.
$Id$
=head1 Lua String
=head2 Description
C<LuaString> extends C<LuaAny> to provide a class with the behaviour of
the Lua C<String> type.
=head3 Overloaded Methods
=over 4
=cut
*/
#include "lua_private.h"
PMC *
_LuaString_get_metatable(PARROT_INTERP) {
return Parrot_find_global_s(interp,
Parrot_str_new_constant(interp, "string"),
Parrot_str_new_constant(interp, "mt_string"));
}
pmclass LuaString
extends LuaAny
provides scalar
provides string
auto_attrs
dynpmc
group lua_group
hll lua
maps String {
ATTR STRING * str_val;
/*
=item C<void init()>
Initializes the string.
=cut
*/
VTABLE void init() {
STRING *str_val = Parrot_str_new_noinit(INTERP, enum_stringrep_one, 0);
SET_ATTR_str_val(INTERP, SELF, str_val);
PObj_custom_mark_SET(SELF);
}
/*
=item C<void mark()>
Marks the string as live.
=cut
*/
VTABLE void mark() {
STRING * str_val;
GET_ATTR_str_val(INTERP, SELF, str_val);
Parrot_gc_mark_STRING_alive(INTERP, str_val);
}
/*
=item C<PMC* clone()>
Creates a copy of the string.
=cut
*/
VTABLE PMC* clone() {
PMC * const res = pmc_new(INTERP, PMC_type(SELF));
VTABLE_set_string_native(INTERP, res, Parrot_str_copy(INTERP, SELF.get_string()));
return res;
}
/*
=item C<FLOATVAL get_number()>
Returns a number or throws an exception.
=cut
*/
VTABLE FLOATVAL get_number() {
PMC *n;
Parrot_pcc_invoke_method_from_c_args(INTERP, SELF,
Parrot_str_new_constant(INTERP, "tonumber"), "->P", &n);
if (PMC_type(n) == dynpmc_LuaNumber)
return VTABLE_get_number(INTERP, n);
Parrot_ex_throw_from_c_args(INTERP, NULL, EXCEPTION_ILL_INHERIT,
"attempt to perform arithmetic on a %Ss value", SELF.name());
return 0.0;
}
/*
=item C<STRING* get_string()>
Returns the string itself.
=cut
*/
VTABLE STRING* get_string() {
STRING *str_val;
GET_ATTR_str_val(INTERP, SELF, str_val);
return Parrot_str_copy(INTERP, str_val);
}
/*
=item C<STRING* name()>
Return the string "string".
=cut
*/
VTABLE STRING* name() {
return Parrot_str_new_constant(INTERP, "string");
}
/*
=item C<void set_integer_native(INTVAL value)>
=cut
*/
VTABLE void set_integer_native(INTVAL value) {
pmc_reuse(INTERP, SELF, dynpmc_LuaNumber, 0);
SELF.set_integer_native(value);
}
/*
=item C<void set_number_native(FLOATVAL value)>
=cut
*/
VTABLE void set_number_native(FLOATVAL value) {
pmc_reuse(INTERP, SELF, dynpmc_LuaNumber, 0);
SELF.set_number_native(value);
}
/*
=item C<VOID set_string_native(STRING *value)>
Sets the value of the string to that of the specified C<string>.
=cut
*/
VTABLE void set_string_native(STRING *value) {
/* Only allow constant PMCs to embed constant strings */
if (PObj_constant_TEST(SELF) && !PObj_constant_TEST(value)) {
const char *copy = Parrot_str_to_cstring(INTERP, value);
value = Parrot_str_new_constant(INTERP, copy);
}
SET_ATTR_str_val(INTERP, SELF, value);
}
/*
=item C<VOID set_pmc(PMC *value)>
Sets the value of the string to the string value of
the specified C<PMC>.
=cut
*/
VTABLE void set_pmc(PMC *value) {
SET_ATTR_str_val(INTERP, SELF, VTABLE_get_string(INTERP, value));
}
/*
=item C<PMC* neg(PMC *dest)>
=cut
*/
VTABLE PMC* neg(PMC *dest) {
PMC *n;
Parrot_pcc_invoke_method_from_c_args(INTERP, SELF,
Parrot_str_new_constant(INTERP, "tonumber"), "->P", &n);
if (PMC_type(n) == dynpmc_LuaNumber) {
const FLOATVAL v = - VTABLE_get_number(INTERP, n);
dest = pmc_new(INTERP, dynpmc_LuaNumber);
VTABLE_set_number_native(INTERP, dest, v);
return dest;
}
Parrot_ex_throw_from_c_args(INTERP, NULL, EXCEPTION_ILL_INHERIT,
"attempt to perform arithmetic on a %Ss value", SELF.name());
}
/*
=item C<void i_neg()>
=cut
*/
VTABLE void i_neg() {
PMC *n;
Parrot_pcc_invoke_method_from_c_args(INTERP, SELF,
Parrot_str_new_constant(INTERP, "tonumber"), "->P", &n);
if (PMC_type(n) == dynpmc_LuaNumber) {
const FLOATVAL v = - VTABLE_get_number(INTERP, n);
VTABLE_set_number_native(INTERP, n, v);
}
else
Parrot_ex_throw_from_c_args(INTERP, NULL, EXCEPTION_ILL_INHERIT,
"attempt to perform arithmetic on a %Ss value", SELF.name());
}
/*
=item C<INTVAL elements()>
Return length of the string.
=cut
*/
VTABLE INTVAL elements() {
return Parrot_str_byte_length(INTERP, SELF.get_string());
}
/*
=item C<void freeze(PMC *info)>
Used to archive the string.
=cut
*/
VTABLE void freeze(PMC *info) {
SUPER(info);
VTABLE_push_string(INTERP, info, SELF.get_string());
}
/*
=item C<void thaw(PMC *info)>
Used to unarchive the string.
=cut
*/
VTABLE void thaw(PMC *info) {
SUPER(info);
SET_ATTR_str_val(INTERP, SELF, VTABLE_shift_string(INTERP, info));
}
/*
=back
=head3 non-Vtable Methods
=over 4
=item C<PMC* add(PMC *value, PMC *dest)>
=cut
*/
MULTI PMC* add(LuaNumber value, PMC *dest) {
PMC *n;
Parrot_pcc_invoke_method_from_c_args(INTERP, SELF,
Parrot_str_new_constant(INTERP, "tonumber"), "->P", &n);
if (PMC_type(n) == dynpmc_LuaNumber) {
PMC *result = PMCNULL;
Parrot_mmd_multi_dispatch_from_c_args(INTERP,
"add", "PPP->P", n, value, dest, &result);
return result;
}
Parrot_ex_throw_from_c_args(INTERP, NULL, EXCEPTION_ILL_INHERIT,
"attempt to perform arithmetic on a %Ss value", SELF.name());
}
MULTI PMC* add(LuaString value, PMC *dest) {
PMC *n;
Parrot_pcc_invoke_method_from_c_args(INTERP, SELF,
Parrot_str_new_constant(INTERP, "tonumber"), "->P", &n);
if (PMC_type(n) == dynpmc_LuaNumber) {
PMC *result = PMCNULL;
Parrot_mmd_multi_dispatch_from_c_args(INTERP,
"add", "PPP->P", n, value, dest, &result);
return result;
}
Parrot_ex_throw_from_c_args(INTERP, NULL, EXCEPTION_ILL_INHERIT,
"attempt to perform arithmetic on a %Ss value", SELF.name());
}
MULTI PMC* add(DEFAULT value, PMC *dest) {
PMC * const meth = _LuaAny_find_meth(INTERP, value, "__add");
if (!PMC_IS_NULL(meth)) {
Parrot_ext_call(INTERP, meth, "PiP->P", SELF, value, &dest);
if (PMC_IS_NULL(dest))
dest = pmc_new(INTERP, dynpmc_LuaNil);
return dest;
}
Parrot_ex_throw_from_c_args(INTERP, NULL, EXCEPTION_ILL_INHERIT,
"attempt to perform arithmetic on a %Ss value",
VTABLE_name(INTERP, value));
}
/*
=item C<void i_add(PMC *value)>
=cut
*/
MULTI void i_add(LuaNumber value) {
PMC *n;
Parrot_pcc_invoke_method_from_c_args(INTERP, SELF,
Parrot_str_new_constant(INTERP, "tonumber"), "->P", &n);
if (PMC_type(n) == dynpmc_LuaNumber)
Parrot_mmd_multi_dispatch_from_c_args(INTERP,
"i_add", "PP", n, value);
else
Parrot_ex_throw_from_c_args(INTERP, NULL, EXCEPTION_ILL_INHERIT,
"attempt to perform arithmetic on a %Ss value",
SELF.name());
}
MULTI void i_add(LuaString value) {
PMC *n;
Parrot_pcc_invoke_method_from_c_args(INTERP, SELF,
Parrot_str_new_constant(INTERP, "tonumber"), "->P", &n);
if (PMC_type(n) == dynpmc_LuaNumber)
Parrot_mmd_multi_dispatch_from_c_args(INTERP,
"i_add", "PP", n, value);
else
Parrot_ex_throw_from_c_args(INTERP, NULL, EXCEPTION_ILL_INHERIT,
"attempt to perform arithmetic on a %Ss value",
SELF.name());
}
MULTI void i_add(DEFAULT value) {
PMC * const meth = _LuaAny_find_meth(INTERP, value, "__add");
if (!PMC_IS_NULL(meth)) {
Parrot_ext_call(INTERP, meth, "PiP->P", SELF, value, &SELF);
if (PMC_IS_NULL(SELF))
SELF = pmc_new(INTERP, dynpmc_LuaNil);
return;
}
Parrot_ex_throw_from_c_args(INTERP, NULL, EXCEPTION_ILL_INHERIT,
"attempt to perform arithmetic on a %Ss value",
VTABLE_name(INTERP, value));
}
/*
=item C<PMC* subtract(PMC *value, PMC *dest)>
=cut
*/
MULTI PMC* subtract(LuaNumber value, PMC *dest) {
PMC *n;
Parrot_pcc_invoke_method_from_c_args(INTERP, SELF,
Parrot_str_new_constant(INTERP, "tonumber"), "->P", &n);
if (PMC_type(n) == dynpmc_LuaNumber) {
PMC *result = PMCNULL;
Parrot_mmd_multi_dispatch_from_c_args(INTERP,
"subtract", "PPP->P", n, value, dest, &result);
return result;
}
Parrot_ex_throw_from_c_args(INTERP, NULL, EXCEPTION_ILL_INHERIT,
"attempt to perform arithmetic on a %Ss value", SELF.name());
}
MULTI PMC* subtract(LuaString value, PMC *dest) {
PMC *n;
Parrot_pcc_invoke_method_from_c_args(INTERP, SELF,
Parrot_str_new_constant(INTERP, "tonumber"), "->P", &n);
if (PMC_type(n) == dynpmc_LuaNumber) {
PMC *result = PMCNULL;
Parrot_mmd_multi_dispatch_from_c_args(INTERP,
"subtract", "PPP->P", n, value, dest, &result);
return result;
}
Parrot_ex_throw_from_c_args(INTERP, NULL, EXCEPTION_ILL_INHERIT,
"attempt to perform arithmetic on a %Ss value", SELF.name());
}
MULTI PMC* subtract(DEFAULT value, PMC *dest) {
PMC * const meth = _LuaAny_find_meth(INTERP, value, "__sub");
if (!PMC_IS_NULL(meth)) {
Parrot_ext_call(INTERP, meth, "PiP->P", SELF, value, &dest);
if (PMC_IS_NULL(dest))
dest = pmc_new(INTERP, dynpmc_LuaNil);
return dest;
}
Parrot_ex_throw_from_c_args(INTERP, NULL, EXCEPTION_ILL_INHERIT,
"attempt to perform arithmetic on a %Ss value",
VTABLE_name(INTERP, value));
}
/*
=item C<void i_subtract(PMC *value)>
=cut
*/
MULTI void i_subtract(LuaNumber value) {
PMC *n;
Parrot_pcc_invoke_method_from_c_args(INTERP, SELF,
Parrot_str_new_constant(INTERP, "tonumber"), "->P", &n);
if (PMC_type(n) == dynpmc_LuaNumber)
Parrot_mmd_multi_dispatch_from_c_args(INTERP,
"i_subtract", "PP", n, value);
else
Parrot_ex_throw_from_c_args(INTERP, NULL, EXCEPTION_ILL_INHERIT,
"attempt to perform arithmetic on a %Ss value",
SELF.name());
}
MULTI void i_subtract(LuaString value) {
PMC *n;
Parrot_pcc_invoke_method_from_c_args(INTERP, SELF,
Parrot_str_new_constant(INTERP, "tonumber"), "->P", &n);
if (PMC_type(n) == dynpmc_LuaNumber)
Parrot_mmd_multi_dispatch_from_c_args(INTERP,
"i_subtract", "PP", n, value);
else
Parrot_ex_throw_from_c_args(INTERP, NULL, EXCEPTION_ILL_INHERIT,
"attempt to perform arithmetic on a %Ss value",
SELF.name());
}
MULTI void i_subtract(DEFAULT value) {
PMC * const meth = _LuaAny_find_meth(INTERP, value, "__sub");
if (!PMC_IS_NULL(meth)) {
Parrot_ext_call(INTERP, meth, "PiP->P", SELF, value, &SELF);
if (PMC_IS_NULL(SELF))
SELF = pmc_new(INTERP, dynpmc_LuaNil);
return;
}
Parrot_ex_throw_from_c_args(INTERP, NULL, EXCEPTION_ILL_INHERIT,
"attempt to perform arithmetic on a %Ss value",
VTABLE_name(INTERP, value));
}
/*
=item C<PMC* multiply(PMC *value, PMC *dest)>
=cut
*/
MULTI PMC* multiply(LuaNumber value, PMC *dest) {
PMC *n;
Parrot_pcc_invoke_method_from_c_args(INTERP, SELF,
Parrot_str_new_constant(INTERP, "tonumber"), "->P", &n);
if (PMC_type(n) == dynpmc_LuaNumber) {
PMC *result = PMCNULL;
Parrot_mmd_multi_dispatch_from_c_args(INTERP,
"multiply", "PPP->P", n, value, dest, &result);
return result;
}
Parrot_ex_throw_from_c_args(INTERP, NULL, EXCEPTION_ILL_INHERIT,
"attempt to perform arithmetic on a %Ss value", SELF.name());
}
MULTI PMC* multiply(LuaString value, PMC *dest) {
PMC *n;
Parrot_pcc_invoke_method_from_c_args(INTERP, SELF,
Parrot_str_new_constant(INTERP, "tonumber"), "->P", &n);
if (PMC_type(n) == dynpmc_LuaNumber) {
PMC *result = PMCNULL;
Parrot_mmd_multi_dispatch_from_c_args(INTERP,
"multiply", "PPP->P", n, value, dest, &result);
return result;
}
Parrot_ex_throw_from_c_args(INTERP, NULL, EXCEPTION_ILL_INHERIT,
"attempt to perform arithmetic on a %Ss value", SELF.name());
}
MULTI PMC* multiply(DEFAULT value, PMC *dest) {
PMC * const meth = _LuaAny_find_meth(INTERP, value, "__mul");
if (!PMC_IS_NULL(meth)) {
Parrot_ext_call(INTERP, meth, "PiP->P", SELF, value, &dest);
if (PMC_IS_NULL(dest))
dest = pmc_new(INTERP, dynpmc_LuaNil);
return dest;
}
Parrot_ex_throw_from_c_args(INTERP, NULL, EXCEPTION_ILL_INHERIT,
"attempt to perform arithmetic on a %Ss value",
VTABLE_name(INTERP, value));
}
/*
=item C<void i_multiply(PMC *value)>
=cut
*/
MULTI void i_multiply(LuaNumber value) {
PMC *n;
Parrot_pcc_invoke_method_from_c_args(INTERP, SELF,
Parrot_str_new_constant(INTERP, "tonumber"), "->P", &n);
if (PMC_type(n) == dynpmc_LuaNumber)
Parrot_mmd_multi_dispatch_from_c_args(INTERP,
"i_multiply", "PP", n, value);
else
Parrot_ex_throw_from_c_args(INTERP, NULL, EXCEPTION_ILL_INHERIT,
"attempt to perform arithmetic on a %Ss value",
SELF.name());
}
MULTI void i_multiply(LuaString value) {
PMC *n;
Parrot_pcc_invoke_method_from_c_args(INTERP, SELF,
Parrot_str_new_constant(INTERP, "tonumber"), "->P", &n);
if (PMC_type(n) == dynpmc_LuaNumber)
Parrot_mmd_multi_dispatch_from_c_args(INTERP,
"i_multiply", "PP", n, value);
else
Parrot_ex_throw_from_c_args(INTERP, NULL, EXCEPTION_ILL_INHERIT,
"attempt to perform arithmetic on a %Ss value",
SELF.name());
}
MULTI void i_multiply(DEFAULT value) {
PMC * const meth = _LuaAny_find_meth(INTERP, value, "__mul");
if (!PMC_IS_NULL(meth)) {
Parrot_ext_call(INTERP, meth, "PiP->P", SELF, value, &SELF);
if (PMC_IS_NULL(SELF))
SELF = pmc_new(INTERP, dynpmc_LuaNil);
return;
}
Parrot_ex_throw_from_c_args(INTERP, NULL, EXCEPTION_ILL_INHERIT,
"attempt to perform arithmetic on a %Ss value",
VTABLE_name(INTERP, value));
}
/*
=item C<PMC* divide(PMC *value, PMC *dest)>
=cut
*/
MULTI PMC* divide(LuaNumber value, PMC *dest) {
PMC *n;
Parrot_pcc_invoke_method_from_c_args(INTERP, SELF,
Parrot_str_new_constant(INTERP, "tonumber"), "->P", &n);
if (PMC_type(n) == dynpmc_LuaNumber) {
PMC *result = PMCNULL;
Parrot_mmd_multi_dispatch_from_c_args(INTERP,
"divide", "PPP->P", n, value, dest, &result);
return result;
}
Parrot_ex_throw_from_c_args(INTERP, NULL, EXCEPTION_ILL_INHERIT,
"attempt to perform arithmetic on a %Ss value", SELF.name());
}
MULTI PMC* divide(LuaString value, PMC *dest) {
PMC *n;
Parrot_pcc_invoke_method_from_c_args(INTERP, SELF,
Parrot_str_new_constant(INTERP, "tonumber"), "->P", &n);
if (PMC_type(n) == dynpmc_LuaNumber) {
PMC *result = PMCNULL;
Parrot_mmd_multi_dispatch_from_c_args(INTERP,
"divide", "PPP->P", n, value, dest, &result);
return result;
}
Parrot_ex_throw_from_c_args(INTERP, NULL, EXCEPTION_ILL_INHERIT,
"attempt to perform arithmetic on a %Ss value", SELF.name());
}
MULTI PMC* divide(DEFAULT value, PMC *dest) {
PMC * const meth = _LuaAny_find_meth(INTERP, value, "__div");
if (!PMC_IS_NULL(meth)) {
Parrot_ext_call(INTERP, meth, "PiP->P", SELF, value, &dest);
if (PMC_IS_NULL(dest))
dest = pmc_new(INTERP, dynpmc_LuaNil);
return dest;
}
Parrot_ex_throw_from_c_args(INTERP, NULL, EXCEPTION_ILL_INHERIT,
"attempt to perform arithmetic on a %Ss value",
VTABLE_name(INTERP, value));
}
/*
=item C<void i_divide(PMC *value)>
=cut
*/
MULTI void i_divide(LuaNumber value) {
PMC *n;
Parrot_pcc_invoke_method_from_c_args(INTERP, SELF,
Parrot_str_new_constant(INTERP, "tonumber"), "->P", &n);
if (PMC_type(n) == dynpmc_LuaNumber)
Parrot_mmd_multi_dispatch_from_c_args(INTERP,
"i_divide", "PP", n, value);
else
Parrot_ex_throw_from_c_args(INTERP, NULL, EXCEPTION_ILL_INHERIT,
"attempt to perform arithmetic on a %Ss value",
SELF.name());
}
MULTI void i_divide(LuaString value) {
PMC *n;
Parrot_pcc_invoke_method_from_c_args(INTERP, SELF,
Parrot_str_new_constant(INTERP, "tonumber"), "->P", &n);
if (PMC_type(n) == dynpmc_LuaNumber)
Parrot_mmd_multi_dispatch_from_c_args(INTERP,
"i_divide", "PP", n, value);
else
Parrot_ex_throw_from_c_args(INTERP, NULL, EXCEPTION_ILL_INHERIT,
"attempt to perform arithmetic on a %Ss value",
SELF.name());
}
MULTI void i_divide(DEFAULT value) {
PMC * const meth = _LuaAny_find_meth(INTERP, value, "__div");
if (!PMC_IS_NULL(meth)) {
Parrot_ext_call(INTERP, meth, "PiP->P", SELF, value, &SELF);
if (PMC_IS_NULL(SELF))
SELF = pmc_new(INTERP, dynpmc_LuaNil);
return;
}
Parrot_ex_throw_from_c_args(INTERP, NULL, EXCEPTION_ILL_INHERIT,
"attempt to perform arithmetic on a %Ss value",
VTABLE_name(INTERP, value));
}
/*
=item C<PMC* modulus(PMC *value, PMC *dest)>
=cut
*/
MULTI PMC* modulus(LuaNumber value, PMC *dest) {
PMC *n;
Parrot_pcc_invoke_method_from_c_args(INTERP, SELF,
Parrot_str_new_constant(INTERP, "tonumber"), "->P", &n);
if (PMC_type(n) == dynpmc_LuaNumber) {
PMC *result = PMCNULL;
Parrot_mmd_multi_dispatch_from_c_args(INTERP,
"modulus", "PPP->P", n, value, dest, &result);
return result;
}
Parrot_ex_throw_from_c_args(INTERP, NULL, EXCEPTION_ILL_INHERIT,
"attempt to perform arithmetic on a %Ss value", SELF.name());
}
MULTI PMC* modulus(LuaString value, PMC *dest) {
PMC *n;
Parrot_pcc_invoke_method_from_c_args(INTERP, SELF,
Parrot_str_new_constant(INTERP, "tonumber"), "->P", &n);
if (PMC_type(n) == dynpmc_LuaNumber) {
PMC *result = PMCNULL;
Parrot_mmd_multi_dispatch_from_c_args(INTERP,
"modulus", "PPP->P", n, value, dest, &result);
return result;
}
Parrot_ex_throw_from_c_args(INTERP, NULL, EXCEPTION_ILL_INHERIT,
"attempt to perform arithmetic on a %Ss value", SELF.name());
}
MULTI PMC* modulus(DEFAULT value, PMC *dest) {
PMC * const meth = _LuaAny_find_meth(INTERP, value, "__mod");
if (!PMC_IS_NULL(meth)) {
Parrot_ext_call(INTERP, meth, "PiP->P", SELF, value, &dest);
if (PMC_IS_NULL(dest))
dest = pmc_new(INTERP, dynpmc_LuaNil);
return dest;
}
Parrot_ex_throw_from_c_args(INTERP, NULL, EXCEPTION_ILL_INHERIT,
"attempt to perform arithmetic on a %Ss value",
VTABLE_name(INTERP, value));
}
/*
=item C<void i_modulus(PMC *value)>
=cut
*/
MULTI void i_modulus(LuaNumber value) {
PMC *n;
Parrot_pcc_invoke_method_from_c_args(INTERP, SELF,
Parrot_str_new_constant(INTERP, "tonumber"), "->P", &n);
if (PMC_type(n) == dynpmc_LuaNumber)
Parrot_mmd_multi_dispatch_from_c_args(INTERP,
"i_modulus", "PP", n, value);
else
Parrot_ex_throw_from_c_args(INTERP, NULL, EXCEPTION_ILL_INHERIT,
"attempt to perform arithmetic on a %Ss value",
SELF.name());
}
MULTI void i_modulus(LuaString value) {
PMC *n;
Parrot_pcc_invoke_method_from_c_args(INTERP, SELF,
Parrot_str_new_constant(INTERP, "tonumber"), "->P", &n);
if (PMC_type(n) == dynpmc_LuaNumber)
Parrot_mmd_multi_dispatch_from_c_args(INTERP,
"i_modulus", "PP", n, value);
else
Parrot_ex_throw_from_c_args(INTERP, NULL, EXCEPTION_ILL_INHERIT,
"attempt to perform arithmetic on a %Ss value",
SELF.name());
}
MULTI void i_modulus(DEFAULT value) {
PMC * const meth = _LuaAny_find_meth(INTERP, value, "__mod");
if (!PMC_IS_NULL(meth)) {
Parrot_ext_call(INTERP, meth, "PiP->P", SELF, value, &SELF);
if (PMC_IS_NULL(SELF))
SELF = pmc_new(INTERP, dynpmc_LuaNil);
return;
}
Parrot_ex_throw_from_c_args(INTERP, NULL, EXCEPTION_ILL_INHERIT,
"attempt to perform arithmetic on a %Ss value",
VTABLE_name(INTERP, value));
}
/*
=item C<INTVAL is_equal(PMC *value)>
Compares the string with C<value>; returns true if
they match.
=cut
*/
MULTI INTVAL is_equal(LuaString value) {
STRING * const s = SELF.get_string();
STRING * const v = VTABLE_get_string(INTERP, value);
return Parrot_str_equal(INTERP, s, v);
}
MULTI INTVAL is_equal(DEFAULT value) {
return (INTVAL)0;
}
/*
=item C<INTVAL cmp(PMC *value)>
Compares the string with C<value>; returns -1 if the
string is smaller, 0 if they are equal, and 1 if C<value>
is smaller.
Throws an exception unless C<value> is a LuaString.
=cut
*/
MULTI INTVAL cmp(LuaString value) {
STRING * const s = SELF.get_string();
STRING * const v = VTABLE_get_string(INTERP, value);
return Parrot_str_compare(INTERP, s, v);
}
MULTI INTVAL cmp(DEFAULT value) {
Parrot_ex_throw_from_c_args(INTERP, NULL, EXCEPTION_ILL_INHERIT,
"attempt to compare string with %Ss",
VTABLE_name(INTERP, value));
}
/*
=item C<PMC* concatenate(PMC *value, PMC *dest)>
=cut
*/
MULTI PMC* concatenate(LuaNumber value, PMC *dest) {
STRING * const s = Parrot_str_concat(INTERP,
SELF.get_string(), VTABLE_get_string(INTERP, value), 0);
dest = pmc_new(INTERP, dynpmc_LuaString);
VTABLE_set_string_native(INTERP, dest, s);
return dest;
}
MULTI PMC* concatenate(LuaString value, PMC *dest) {
STRING * const s = Parrot_str_concat(INTERP,
SELF.get_string(), VTABLE_get_string(INTERP, value), 0);
dest = pmc_new(INTERP, dynpmc_LuaString);
VTABLE_set_string_native(INTERP, dest, s);
return dest;
}
MULTI PMC* concatenate(DEFAULT value, PMC *dest) {
PMC * const meth = _LuaAny_find_meth(INTERP, value, "__concat");
if (!PMC_IS_NULL(meth)) {
Parrot_ext_call(INTERP, meth, "PiP->P", SELF, value, &dest);
if (PMC_IS_NULL(dest))
dest = pmc_new(INTERP, dynpmc_LuaNil);
return dest;
}
Parrot_ex_throw_from_c_args(INTERP, NULL, EXCEPTION_ILL_INHERIT,
"attempt to concatenate a %Ss value",
VTABLE_name(INTERP, value));
}
/*
=item C<void i_concatenate(PMC *value)>
=cut
*/
MULTI void i_concatenate(LuaNumber value) {
STRING * const s = SELF.get_string();
STRING * const v = VTABLE_get_string(INTERP, value);
SELF.set_string_native(Parrot_str_append(INTERP, s, v));
}
MULTI void i_concatenate(LuaString value) {
STRING * const s = SELF.get_string();
STRING * const v = VTABLE_get_string(INTERP, value);
SELF.set_string_native(Parrot_str_append(INTERP, s, v));
}
MULTI void i_concatenate(DEFAULT value) {
PMC * const meth = _LuaAny_find_meth(INTERP, value, "__concat");
if (!PMC_IS_NULL(meth)) {
Parrot_ext_call(INTERP, meth, "PiP->P", SELF, value, &SELF);
if (PMC_IS_NULL(SELF))
SELF = pmc_new(INTERP, dynpmc_LuaNil);
return;
}
Parrot_ex_throw_from_c_args(INTERP, NULL, EXCEPTION_ILL_INHERIT,
"attempt to concatenate a %Ss value",
VTABLE_name(INTERP, value));
}
/*
=back
=head3 Specific Methods
=over 4
=item C<PMC *get_metatable()>
=cut
*/
METHOD PMC* get_metatable() {
PMC *retval = _LuaString_get_metatable(INTERP);
if (PMC_IS_NULL(retval))
retval = pmc_new(INTERP, dynpmc_LuaNil);
RETURN(PMC *retval);
}
/*
=item C<PMC* len()>
=cut
*/
METHOD PMC* len() {
PMC * const retval = pmc_new(INTERP, dynpmc_LuaNumber);
VTABLE_set_number_native(INTERP, retval, SELF.elements());
RETURN(PMC *retval);
}
/*
=item C<PMC* rawequal(PMC *value)>
=cut
*/
METHOD PMC* rawequal(PMC *value) {
PMC *retval = pmc_new(INTERP, dynpmc_LuaBoolean);
if (PMC_type(SELF) == PMC_type(value)
&& 0 == Parrot_str_not_equal(INTERP, SELF.get_string(),
VTABLE_get_string(INTERP, value)))
VTABLE_set_bool(INTERP, retval, 1);
else
VTABLE_set_bool(INTERP, retval, 0);
RETURN(PMC *retval);
}
/*
=item C<PMC* tonumber()>
=cut
*/
METHOD PMC* tonumber() {
PMC *retval;
char * const s1 = Parrot_str_to_cstring(INTERP, SELF.get_string());
char *s2;
const FLOATVAL d = strtod(s1, &s2);
/* at least one valid digit? */
if (s1 != s2) {
/* skip trailing spaces */