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parser_util.c
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parser_util.c
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/*
* parser_util.c
*
* Intermediate Code Compiler for Parrot.
*
* Copyright (C) 2002 Melvin Smith <melvin.smith@mindspring.com>
* Copyright (C) 2002-2009, Parrot Foundation.
*
* parser support functions
*
*
*/
#include <string.h>
#include <stdio.h>
#include <stdlib.h>
#define _PARSER
#include "imc.h"
#include "parrot/dynext.h"
#include "parrot/embed.h"
#include "pmc/pmc_sub.h"
#include "pmc/pmc_callcontext.h"
#include "pbc.h"
#include "parser.h"
#include "optimizer.h"
/*
=head1 NAME
compilers/imcc/parser_util.c
=head1 DESCRIPTION
ParserUtil - Parser support functions.
=cut
*/
/* HEADERIZER HFILE: compilers/imcc/imc.h */
/* HEADERIZER BEGIN: static */
/* Don't modify between HEADERIZER BEGIN / HEADERIZER END. Your changes will be lost. */
PARROT_WARN_UNUSED_RESULT
static int change_op_arg_to_num(PARROT_INTERP,
ARGMOD(IMC_Unit *unit),
ARGMOD(SymReg **r),
int num,
int emit)
__attribute__nonnull__(1)
__attribute__nonnull__(2)
__attribute__nonnull__(3)
FUNC_MODIFIES(*unit)
FUNC_MODIFIES(*r);
static void imcc_destroy_macro_values(ARGMOD(void *value))
__attribute__nonnull__(1)
FUNC_MODIFIES(*value);
PARROT_WARN_UNUSED_RESULT
PARROT_CAN_RETURN_NULL
static op_info_t * try_find_op(PARROT_INTERP,
ARGMOD(IMC_Unit *unit),
ARGIN(const char *name),
ARGMOD(SymReg **r),
int n,
int keyvec,
int emit)
__attribute__nonnull__(1)
__attribute__nonnull__(2)
__attribute__nonnull__(3)
__attribute__nonnull__(4)
FUNC_MODIFIES(*unit)
FUNC_MODIFIES(*r);
PARROT_WARN_UNUSED_RESULT
PARROT_CAN_RETURN_NULL
static const char * try_rev_cmp(ARGIN(const char *name), ARGMOD(SymReg **r))
__attribute__nonnull__(1)
__attribute__nonnull__(2)
FUNC_MODIFIES(*r);
PARROT_MALLOC
PARROT_CANNOT_RETURN_NULL
PARROT_WARN_UNUSED_RESULT
static Instruction * var_arg_ins(PARROT_INTERP,
ARGMOD(IMC_Unit *unit),
ARGIN(const char *name),
ARGMOD(SymReg **r),
int n,
int emit)
__attribute__nonnull__(1)
__attribute__nonnull__(2)
__attribute__nonnull__(3)
__attribute__nonnull__(4)
FUNC_MODIFIES(*unit)
FUNC_MODIFIES(*r);
#define ASSERT_ARGS_change_op_arg_to_num __attribute__unused__ int _ASSERT_ARGS_CHECK = (\
PARROT_ASSERT_ARG(interp) \
, PARROT_ASSERT_ARG(unit) \
, PARROT_ASSERT_ARG(r))
#define ASSERT_ARGS_imcc_destroy_macro_values __attribute__unused__ int _ASSERT_ARGS_CHECK = (\
PARROT_ASSERT_ARG(value))
#define ASSERT_ARGS_try_find_op __attribute__unused__ int _ASSERT_ARGS_CHECK = (\
PARROT_ASSERT_ARG(interp) \
, PARROT_ASSERT_ARG(unit) \
, PARROT_ASSERT_ARG(name) \
, PARROT_ASSERT_ARG(r))
#define ASSERT_ARGS_try_rev_cmp __attribute__unused__ int _ASSERT_ARGS_CHECK = (\
PARROT_ASSERT_ARG(name) \
, PARROT_ASSERT_ARG(r))
#define ASSERT_ARGS_var_arg_ins __attribute__unused__ int _ASSERT_ARGS_CHECK = (\
PARROT_ASSERT_ARG(interp) \
, PARROT_ASSERT_ARG(unit) \
, PARROT_ASSERT_ARG(name) \
, PARROT_ASSERT_ARG(r))
/* Don't modify between HEADERIZER BEGIN / HEADERIZER END. Your changes will be lost. */
/* HEADERIZER END: static */
/*
* used in -D20 to print files with the output of every PIR compilation
* this can't be attached to the interpreter or packfile because it has to be
* absolutely global to prevent the files from being overwritten.
*
*/
/* XXX non-reentrant */
static Parrot_mutex eval_nr_lock;
static INTVAL eval_nr = 0;
/*
=head2 Functions
=over
=item C<void op_fullname(char *dest, const char *name, SymReg * const *args, int
narg, int keyvec)>
Lookup the full opcode given the short name
set I0, 5 -> set_i_ic
set I0, I1 -> set_i_i
Obviously the registers must be examined before returning the correct
opcode.
=cut
*/
void
op_fullname(ARGOUT(char *dest), ARGIN(const char *name),
ARGIN(SymReg * const *args), int narg, int keyvec)
{
ASSERT_ARGS(op_fullname)
int i;
const size_t namelen = strlen(name);
memcpy(dest, name, namelen+1);
dest += namelen;
for (i = 0; i < narg && args[i]; i++) {
*dest++ = '_';
if (args[i]->type == VTADDRESS) {
*dest++ = 'i';
*dest++ = 'c';
continue;
}
/* if one ever wants num keys, they go with 'S' */
if (keyvec & KEY_BIT(i)) {
*dest++ = 'k';
if (args[i]->set=='S' || args[i]->set=='N' || args[i]->set=='K') {
*dest++ = 'c';
continue;
}
else if (args[i]->set == 'P')
continue;
}
if (args[i]->set == 'K')
*dest++ = 'p';
else
*dest++ = (char)tolower((unsigned char)args[i]->set);
if (args[i]->type & (VTCONST|VT_CONSTP)) {
*dest++ = 'c';
}
}
*dest = '\0';
}
/*
=item C<void check_op(PARROT_INTERP, op_info_t **op_info, char *fullname, const
char *name, SymReg * const * r, int narg, int keyvec)>
Return opcode value for op name
=cut
*/
void
check_op(PARROT_INTERP, ARGOUT(op_info_t **op_info), ARGOUT(char *fullname),
ARGIN(const char *name), ARGIN(SymReg * const * r), int narg, int keyvec)
{
ASSERT_ARGS(check_op)
op_fullname(fullname, name, r, narg, keyvec);
*op_info = (op_info_t *)parrot_hash_get(interp, interp->op_hash, fullname);
if (*op_info && !STREQ((*op_info)->full_name, fullname))
*op_info = NULL;
}
/*
=item C<int is_op(PARROT_INTERP, const char *name)>
Is instruction a parrot opcode?
=cut
*/
PARROT_WARN_UNUSED_RESULT
int
is_op(PARROT_INTERP, ARGIN(const char *name))
{
ASSERT_ARGS(is_op)
return parrot_hash_exists(interp, interp->op_hash, (void *)name);
}
/*
=item C<static Instruction * var_arg_ins(PARROT_INTERP, IMC_Unit *unit, const
char *name, SymReg **r, int n, int emit)>
Create an C<Instruction> object for an instruction that takes a variable
number of arguments.
=cut
*/
PARROT_MALLOC
PARROT_CANNOT_RETURN_NULL
PARROT_WARN_UNUSED_RESULT
static Instruction *
var_arg_ins(PARROT_INTERP, ARGMOD(IMC_Unit *unit), ARGIN(const char *name),
ARGMOD(SymReg **r), int n, int emit)
{
ASSERT_ARGS(var_arg_ins)
op_info_t *op;
Instruction *ins;
char fullname[64];
/* in constant */
int dirs = 1;
/* XXX: Maybe the check for n == 0 is the only one required
* and the other must be assertions? */
if (n == 0 || r[0] == NULL || r[0]->name == NULL)
IMCC_fataly(interp, EXCEPTION_SYNTAX_ERROR,
"The opcode '%s' needs arguments", name);
if (r[0]->set == 'S') {
r[0] = mk_const(interp, r[0]->name, 'P');
r[0]->pmc_type = enum_class_FixedIntegerArray;
}
op_fullname(fullname, name, r, 1, 0);
op = (op_info_t *)parrot_hash_get(interp, interp->op_hash, fullname);
PARROT_ASSERT(op && STREQ(op->full_name, fullname));
ins = _mk_instruction(name, "", n, r, dirs);
ins->op = op;
ins->opsize = n + 1;
if (emit)
emitb(interp, unit, ins);
return ins;
}
/*
=item C<Instruction * INS(PARROT_INTERP, IMC_Unit *unit, const char *name, const
char *fmt, SymReg **r, int n, int keyvec, int emit)>
Makes an instruction.
name ... op name
fmt ... optional format
regs ... SymReg **
n ... number of params
keyvec ... see KEY_BIT()
emit ... if true, append to instructions
see imc.c for usage
=cut
*/
PARROT_IGNORABLE_RESULT
PARROT_CAN_RETURN_NULL
Instruction *
INS(PARROT_INTERP, ARGMOD(IMC_Unit *unit), ARGIN(const char *name),
ARGIN_NULLOK(const char *fmt), ARGIN(SymReg **r), int n, int keyvec,
int emit)
{
ASSERT_ARGS(INS)
if (STREQ(name, ".annotate")) {
Instruction *ins = _mk_instruction(name, "", n, r, 0);
if (emit)
return emitb(interp, unit, ins);
else
return ins;
}
if ((STREQ(name, "set_args"))
|| (STREQ(name, "get_results"))
|| (STREQ(name, "get_params"))
|| (STREQ(name, "set_returns")))
return var_arg_ins(interp, unit, name, r, n, emit);
else {
Instruction *ins;
int i, len;
int dirs = 0;
op_info_t *op;
char fullname[64] = "", format[128] = "";
op_fullname(fullname, name, r, n, keyvec);
op = (op_info_t *)parrot_hash_get(interp, interp->op_hash, fullname);
if (op && !STREQ(op->full_name, fullname))
op = NULL;
/* maybe we have a fullname */
if (!op) {
op = (op_info_t *)parrot_hash_get(interp, interp->op_hash, name);
if (op && !STREQ(op->full_name, name))
op = NULL;
}
/* still wrong, try reverse compare */
if (!op) {
const char * const n_name = try_rev_cmp(name, r);
if (n_name) {
name = n_name;
op_fullname(fullname, name, r, n, keyvec);
op = (op_info_t *)parrot_hash_get(interp, interp->op_hash, fullname);
if (op && !STREQ(op->full_name, fullname))
op = NULL;
}
}
/* still wrong, try to find an existing op */
if (!op)
op = try_find_op(interp, unit, name, r, n, keyvec, emit);
if (!op) {
int ok = 0;
/* check mixed constants */
ins = IMCC_subst_constants_umix(interp, unit, name, r, n + 1);
if (ins)
goto found_ins;
/* and finally multiple constants */
ins = IMCC_subst_constants(interp, unit, name, r, n + 1, &ok);
if (ok) {
if (ins)
goto found_ins;
else
return NULL;
}
}
else
strcpy(fullname, name);
if (!op)
IMCC_fataly(interp, EXCEPTION_SYNTAX_ERROR,
"The opcode '%s' (%s<%d>) was not found. "
"Check the type and number of the arguments",
fullname, name, n);
*format = '\0';
/* info->op_count is args + 1
* build instruction format
* set LV_in / out flags */
if (n != op->op_count - 1)
IMCC_fataly(interp, EXCEPTION_SYNTAX_ERROR,
"arg count mismatch: op #%d '%s' needs %d given %d",
op, fullname, op->op_count-1, n);
/* XXX Speed up some by keep track of the end of format ourselves */
for (i = 0; i < n; i++) {
switch (op->dirs[i]) {
case PARROT_ARGDIR_INOUT:
dirs |= 1 << (16 + i);
/* go on */
case PARROT_ARGDIR_IN:
dirs |= 1 << i ;
break;
case PARROT_ARGDIR_OUT:
dirs |= 1 << (16 + i);
break;
default:
PARROT_ASSERT(0);
};
if (keyvec & KEY_BIT(i)) {
/* XXX Assert that len > 2 */
len = strlen(format) - 2;
PARROT_ASSERT(len >= 0);
format[len] = '\0';
strcat(format, "[%s], ");
}
else if (r[i]->set == 'K')
strcat(format, "[%s], ");
else
strcat(format, "%s, ");
}
len = strlen(format);
if (len >= 2)
len -= 2;
format[len] = '\0';
if (fmt && *fmt) {
strncpy(format, fmt, sizeof (format) - 1);
format[sizeof (format) - 1] = '\0';
}
IMCC_debug(interp, DEBUG_PARSER, "%s %s\t%s\n", name, format, fullname);
/* make the instruction */
ins = _mk_instruction(name, format, n, r, dirs);
ins->keys |= keyvec;
/* fill in oplib's info */
ins->op = op;
ins->opsize = n + 1;
/* mark end as absolute branch */
if (STREQ(name, "end") || STREQ(name, "ret")) {
ins->type |= ITBRANCH | IF_goto;
}
else if (STREQ(name, "warningson")) {
/* emit a debug seg, if this op is seen */
PARROT_WARNINGS_on(interp, PARROT_WARNINGS_ALL_FLAG);
}
else if (STREQ(name, "yield")) {
if (!IMCC_INFO(interp)->cur_unit->instructions->symregs[0])
IMCC_fataly(interp, EXCEPTION_SYNTAX_ERROR,
"Cannot yield from non-continuation\n");
IMCC_INFO(interp)->cur_unit->instructions->symregs[0]->pcc_sub->yield = 1;
}
/* set up branch flags
* mark registers that are labels */
for (i = 0; i < op->op_count - 1; i++) {
if (op->labels[i])
ins->type |= ITBRANCH | (1 << i);
else {
if (r[i]->type == VTADDRESS)
IMCC_fataly(interp, EXCEPTION_SYNTAX_ERROR,
"undefined identifier '%s'\n", r[i]->name);
}
}
if (op->jump) {
ins->type |= ITBRANCH;
/* TODO use opnum constants */
if (STREQ(name, "branch")
|| STREQ(name, "tailcall")
|| STREQ(name, "returncc"))
ins->type |= IF_goto;
else if (STREQ(fullname, "jump_i")
|| STREQ(fullname, "branch_i"))
IMCC_INFO(interp)->dont_optimize = 1;
}
else if (STREQ(name, "set") && n == 2) {
/* set Px, Py: both PMCs have the same address */
if (r[0]->set == r[1]->set && REG_NEEDS_ALLOC(r[1]))
ins->type |= ITALIAS;
}
found_ins:
if (emit)
emitb(interp, unit, ins);
return ins;
}
}
extern void* yy_scan_string(const char *);
/*
=item C<PMC * imcc_compile(PARROT_INTERP, const char *s, int pasm_file, STRING
**error_message)>
Compile a pasm or imcc string
FIXME as we have separate constants, the old constants in ghash must be deleted.
=cut
*/
PARROT_WARN_UNUSED_RESULT
PARROT_CANNOT_RETURN_NULL
PMC *
imcc_compile(PARROT_INTERP, ARGIN(const char *s), int pasm_file,
ARGOUT(STRING **error_message))
{
ASSERT_ARGS(imcc_compile)
/* imcc always compiles to interp->code
* save old cs, make new
*/
STRING *name;
PackFile_ByteCode *old_cs, *new_cs;
PMC *sub = NULL;
struct _imc_info_t *imc_info = NULL;
struct parser_state_t *next;
void *yyscanner;
PMC *ignored;
UINTVAL regs_used[4] = {3, 3, 3, 3};
INTVAL eval_number;
yylex_init_extra(interp, &yyscanner);
/* we create not yet anchored PMCs - e.g. Subs: turn off GC */
Parrot_block_GC_mark(interp);
if (IMCC_INFO(interp)->last_unit) {
/* a reentrant compile */
imc_info = mem_gc_allocate_zeroed_typed(interp, imc_info_t);
imc_info->ghash = IMCC_INFO(interp)->ghash;
imc_info->prev = IMCC_INFO(interp);
IMCC_INFO(interp) = imc_info;
}
ignored = Parrot_push_context(interp, regs_used);
UNUSED(ignored);
if (eval_nr == 0)
MUTEX_INIT(eval_nr_lock);
LOCK(eval_nr_lock);
eval_number = ++eval_nr;
UNLOCK(eval_nr_lock);
name = Parrot_sprintf_c(interp, "EVAL_" INTVAL_FMT, eval_number);
new_cs = PF_create_default_segs(interp, name, 0);
old_cs = Parrot_switch_to_cs(interp, new_cs, 0);
IMCC_INFO(interp)->cur_namespace = NULL;
/* spit out the sourcefile */
if (Interp_debug_TEST(interp, PARROT_EVAL_DEBUG_FLAG)) {
char *buf = Parrot_str_to_cstring(interp, name);
FILE * const fp = fopen(buf, "w");
Parrot_str_free_cstring(buf);
if (fp) {
fputs(s, fp);
fclose(fp);
}
}
IMCC_push_parser_state(interp);
next = IMCC_INFO(interp)->state->next;
if (imc_info)
IMCC_INFO(interp)->state->next = NULL;
IMCC_INFO(interp)->state->pasm_file = pasm_file;
IMCC_INFO(interp)->state->file = Parrot_str_to_cstring(interp, name);
IMCC_INFO(interp)->expect_pasm = 0;
compile_string(interp, s, yyscanner);
Parrot_pop_context(interp);
/*
* compile_string NULLifies frames->next, so that yywrap
* doesn't try to continue compiling the previous buffer
* This OTOH prevents pop_parser-state ->
*
* set next here and pop
*/
IMCC_INFO(interp)->state->next = next;
IMCC_pop_parser_state(interp, yyscanner);
if (!IMCC_INFO(interp)->error_code) {
Parrot_Sub_attributes *sub_data;
/*
* create sub PMC
*
* TODO if a sub was denoted :main return that instead
*/
sub = Parrot_pmc_new(interp, enum_class_Eval);
PMC_get_sub(interp, sub, sub_data);
sub_data->seg = new_cs;
sub_data->start_offs = 0;
sub_data->end_offs = new_cs->base.size;
sub_data->name = name;
*error_message = NULL;
}
else {
PackFile_Segment_destroy(interp, (PackFile_Segment *)new_cs);
*error_message = IMCC_INFO(interp)->error_message;
}
if (imc_info) {
SymReg *ns = IMCC_INFO(interp)->cur_namespace;
IMCC_INFO(interp) = imc_info->prev;
mem_sys_free(imc_info);
imc_info = IMCC_INFO(interp);
IMCC_INFO(interp)->cur_unit = imc_info->last_unit;
if (ns && ns != imc_info->cur_namespace)
free_sym(ns);
IMCC_INFO(interp)->cur_namespace = imc_info->cur_namespace;
}
else
imc_cleanup(interp, yyscanner);
Parrot_unblock_GC_mark(interp);
yylex_destroy(yyscanner);
/* Now run any :load/:init subs. */
if (!*error_message)
PackFile_fixup_subs(interp, PBC_MAIN, sub);
/* restore old byte_code, */
if (old_cs)
(void)Parrot_switch_to_cs(interp, old_cs, 0);
return sub;
}
/*
=item C<PMC * imcc_compile_pasm(PARROT_INTERP, const char *s)>
Note: This function is provided for backward compatibility. This
function can go away in future.
=cut
*/
PARROT_WARN_UNUSED_RESULT
PARROT_CANNOT_RETURN_NULL
PMC *
imcc_compile_pasm(PARROT_INTERP, ARGIN(const char *s))
{
ASSERT_ARGS(imcc_compile_pasm)
STRING *error_message;
return imcc_compile(interp, s, 1, &error_message);
}
/*
=item C<PMC * imcc_compile_pir(PARROT_INTERP, const char *s)>
Note: This function is provided for backward compatibility. This
function can go away in future.
=cut
*/
PARROT_WARN_UNUSED_RESULT
PARROT_CANNOT_RETURN_NULL
PMC *
imcc_compile_pir(PARROT_INTERP, ARGIN(const char *s))
{
ASSERT_ARGS(imcc_compile_pir)
STRING *error_message;
return imcc_compile(interp, s, 0, &error_message);
}
/*
=item C<PMC * IMCC_compile_pir_s(PARROT_INTERP, const char *s, STRING
**error_message)>
Compile PIR code from a C string. Returns errors in the <STRING> provided.
=cut
*/
PARROT_WARN_UNUSED_RESULT
PARROT_CANNOT_RETURN_NULL
PMC *
IMCC_compile_pir_s(PARROT_INTERP, ARGIN(const char *s),
ARGOUT(STRING **error_message))
{
ASSERT_ARGS(IMCC_compile_pir_s)
return imcc_compile(interp, s, 0, error_message);
}
/*
=item C<PMC * IMCC_compile_pasm_s(PARROT_INTERP, const char *s, STRING
**error_message)>
Compile PASM code from a C string. Returns errors in the <STRING> provided.
=cut
*/
PARROT_WARN_UNUSED_RESULT
PARROT_CANNOT_RETURN_NULL
PMC *
IMCC_compile_pasm_s(PARROT_INTERP, ARGIN(const char *s),
ARGOUT(STRING **error_message))
{
ASSERT_ARGS(IMCC_compile_pasm_s)
return imcc_compile(interp, s, 1, error_message);
}
/*
=item C<PMC * imcc_compile_pasm_ex(PARROT_INTERP, const char *s)>
Compile PASM code from a C string. Throws an exception upon errors.
=cut
*/
PARROT_WARN_UNUSED_RESULT
PARROT_CANNOT_RETURN_NULL
PMC *
imcc_compile_pasm_ex(PARROT_INTERP, ARGIN(const char *s))
{
ASSERT_ARGS(imcc_compile_pasm_ex)
STRING *error_message;
PMC * const sub = imcc_compile(interp, s, 1, &error_message);
if (sub)
return sub;
Parrot_ex_throw_from_c_args(interp, NULL, EXCEPTION_SYNTAX_ERROR, "%Ss",
error_message);
}
/*
=item C<PMC * imcc_compile_pir_ex(PARROT_INTERP, const char *s)>
Compile PIR code from a C string. Throws an exception upon errors.
=cut
*/
PARROT_WARN_UNUSED_RESULT
PARROT_CANNOT_RETURN_NULL
PMC *
imcc_compile_pir_ex(PARROT_INTERP, ARGIN(const char *s))
{
ASSERT_ARGS(imcc_compile_pir_ex)
STRING *error_message;
PMC *sub;
sub = imcc_compile(interp, s, 0, &error_message);
if (sub)
return sub;
Parrot_ex_throw_from_c_args(interp, NULL, EXCEPTION_SYNTAX_ERROR, "%Ss",
error_message);
}
/*
=item C<void * imcc_compile_file(PARROT_INTERP, const char *fullname, STRING
**error_message)>
Compile a file by filename (can be either PASM or IMCC code)
=cut
*/
PARROT_EXPORT
PARROT_CANNOT_RETURN_NULL
void *
imcc_compile_file(PARROT_INTERP, ARGIN(const char *fullname),
ARGOUT(STRING **error_message))
{
ASSERT_ARGS(imcc_compile_file)
PackFile_ByteCode * const cs_save = interp->code;
PackFile_ByteCode *cs = NULL;
struct _imc_info_t *imc_info = NULL;
const char *ext;
FILE *fp;
STRING *fs;
PMC *newcontext;
/* need at least 3 regs for compilation of constant math e.g.
* add_i_ic_ic - see also IMCC_subst_constants() */
UINTVAL regs_used[4] = {3, 3, 3, 3};
if (IMCC_INFO(interp)->last_unit) {
/* a reentrant compile */
imc_info = mem_gc_allocate_zeroed_typed(interp, imc_info_t);
imc_info->prev = IMCC_INFO(interp);
imc_info->ghash = IMCC_INFO(interp)->ghash;
IMCC_INFO(interp) = imc_info;
}
fs = Parrot_str_new_init(interp, fullname, strlen(fullname),
Parrot_default_encoding_ptr, 0);
if (Parrot_stat_info_intval(interp, fs, STAT_ISDIR))
Parrot_ex_throw_from_c_args(interp, NULL, EXCEPTION_EXTERNAL_ERROR,
"imcc_compile_file: '%s' is a directory\n", fullname);
fp = fopen(fullname, "r");
if (!fp)
IMCC_fatal(interp, EXCEPTION_EXTERNAL_ERROR,
"imcc_compile_file: couldn't open '%s'\n", fullname);
IMCC_push_parser_state(interp);
{
/* Store a copy, in order to know how to free it later */
char *copyname = mem_sys_strdup(fullname);
IMCC_INFO(interp)->state->file = copyname;
ext = strrchr(copyname, '.');
}
/* start over; let the start of line rule increment this to 1 */
IMCC_INFO(interp)->line = 0;
/*
* the Parrot_str_compare() called from pmc_type() triggers GC
* which can destroy packfiles under construction
*/
Parrot_block_GC_mark(interp);
/* Activate a new context and reset it to initial values */
newcontext = Parrot_push_context(interp, regs_used);
Parrot_pcc_set_HLL(interp, newcontext, 0);
Parrot_pcc_set_sub(interp, newcontext, 0);
IMCC_INFO(interp)->cur_namespace = NULL;
interp->code = NULL;
if (ext && STREQ(ext, ".pasm")) {
void *yyscanner;
yylex_init_extra(interp, &yyscanner);
IMCC_INFO(interp)->state->pasm_file = 1;
/* see imcc.l */
compile_file(interp, fp, yyscanner);
yylex_destroy(yyscanner);
}
else {
void *yyscanner;
yylex_init_extra(interp, &yyscanner);
IMCC_INFO(interp)->state->pasm_file = 0;
compile_file(interp, fp, yyscanner);
yylex_destroy(yyscanner);
}
Parrot_unblock_GC_mark(interp);
Parrot_pop_context(interp);
imc_cleanup(interp, NULL);
fclose(fp);
if (!IMCC_INFO(interp)->error_code)
cs = interp->code;
else
*error_message = IMCC_INFO(interp)->error_message;
if (cs_save)
(void)Parrot_switch_to_cs(interp, cs_save, 0);
if (imc_info) {
IMCC_INFO(interp) = imc_info->prev;
if (imc_info->globals)
mem_sys_free(imc_info->globals);
mem_sys_free(imc_info);
}
return cs;
}
/*
=item C<void register_compilers(PARROT_INTERP)>
Register additional compilers with the interpreter
=cut
*/
void
register_compilers(PARROT_INTERP)
{
ASSERT_ARGS(register_compilers)
Parrot_compreg(interp, Parrot_str_new_constant(interp, "PASM"), imcc_compile_pasm_ex);
Parrot_compreg(interp, Parrot_str_new_constant(interp, "PIR"), imcc_compile_pir_ex);
/* It looks like this isn't used anywhere yet */
/* TODO: return a Eval PMC, instead of a packfile */
/* Parrot_compreg(interp,
Parrot_str_new_constant(interp, "FILE"),
imcc_compile_file ); */
}
/*
=item C<static int change_op_arg_to_num(PARROT_INTERP, IMC_Unit *unit, SymReg
**r, int num, int emit)>
Change one argument of an op to be numeric in stead of integral. Used when
integer argument op variants don't exist.
=cut
*/
PARROT_WARN_UNUSED_RESULT
static int
change_op_arg_to_num(PARROT_INTERP, ARGMOD(IMC_Unit *unit), ARGMOD(SymReg **r), int num, int emit)
{
ASSERT_ARGS(change_op_arg_to_num)
int changed = 0;
if (r[num]->type & (VTCONST|VT_CONSTP)) {
/* make a number const */
const SymReg *c = r[num];
if (c->type & VT_CONSTP)
c = c->reg;
r[num] = mk_const(interp, c->name, 'N');
changed = 1;
}
else if (emit) {
/* emit
* set $N0, Iy
* op Nx, $N0
* or
* op Nx, ..., $N0
*/
SymReg *rr[2];
rr[0] = mk_temp_reg(interp, 'N');
rr[1] = r[num];
INS(interp, unit, "set", NULL, rr, 2, 0, 1);
r[num] = rr[0];
changed = 1;
/* need to allocate the temp - run reg_alloc */
IMCC_INFO(interp)->optimizer_level |= OPT_PASM;
}
return changed;
}
/*
=item C<static op_info_t * try_find_op(PARROT_INTERP, IMC_Unit *unit, const char
*name, SymReg **r, int n, int keyvec, int emit)>
Try to find valid op doing the same operation e.g.
add_n_i_n => add_n_n_i