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Sweden-Number/dlls/vbscript/compile.c

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/*
* Copyright 2011 Jacek Caban for CodeWeavers
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
*/
#include <assert.h>
#include "vbscript.h"
#include "parse.h"
#include "parser.tab.h"
#include "wine/debug.h"
WINE_DEFAULT_DEBUG_CHANNEL(vbscript);
WINE_DECLARE_DEBUG_CHANNEL(vbscript_disas);
typedef struct {
parser_ctx_t parser;
unsigned instr_cnt;
unsigned instr_size;
vbscode_t *code;
unsigned *labels;
unsigned labels_size;
unsigned labels_cnt;
unsigned while_end_label;
unsigned for_end_label;
unsigned sub_end_label;
unsigned func_end_label;
unsigned prop_end_label;
dim_decl_t *dim_decls;
dynamic_var_t *global_vars;
const_decl_t *const_decls;
const_decl_t *global_consts;
function_t *func;
function_t *funcs;
function_decl_t *func_decls;
class_desc_t *classes;
} compile_ctx_t;
static HRESULT compile_expression(compile_ctx_t*,expression_t*);
static HRESULT compile_statement(compile_ctx_t*,statement_t*);
static const struct {
const char *op_str;
instr_arg_type_t arg1_type;
instr_arg_type_t arg2_type;
} instr_info[] = {
#define X(n,a,b,c) {#n,b,c},
OP_LIST
#undef X
};
static void dump_instr_arg(instr_arg_type_t type, instr_arg_t *arg)
{
switch(type) {
case ARG_STR:
case ARG_BSTR:
TRACE_(vbscript_disas)("\t%s", debugstr_w(arg->str));
break;
case ARG_INT:
TRACE_(vbscript_disas)("\t%d", arg->uint);
break;
case ARG_UINT:
case ARG_ADDR:
TRACE_(vbscript_disas)("\t%u", arg->uint);
break;
case ARG_DOUBLE:
TRACE_(vbscript_disas)("\t%lf", *arg->dbl);
break;
case ARG_NONE:
break;
default:
assert(0);
}
}
static void dump_code(compile_ctx_t *ctx)
{
instr_t *instr;
for(instr = ctx->code->instrs; instr < ctx->code->instrs+ctx->instr_cnt; instr++) {
TRACE_(vbscript_disas)("%d:\t%s", (int)(instr-ctx->code->instrs), instr_info[instr->op].op_str);
dump_instr_arg(instr_info[instr->op].arg1_type, &instr->arg1);
dump_instr_arg(instr_info[instr->op].arg2_type, &instr->arg2);
TRACE_(vbscript_disas)("\n");
}
}
static inline void *compiler_alloc(vbscode_t *vbscode, size_t size)
{
return vbsheap_alloc(&vbscode->heap, size);
}
static inline void *compiler_alloc_zero(vbscode_t *vbscode, size_t size)
{
void *ret;
ret = vbsheap_alloc(&vbscode->heap, size);
if(ret)
memset(ret, 0, size);
return ret;
}
static WCHAR *compiler_alloc_string(vbscode_t *vbscode, const WCHAR *str)
{
size_t size;
WCHAR *ret;
size = (strlenW(str)+1)*sizeof(WCHAR);
ret = compiler_alloc(vbscode, size);
if(ret)
memcpy(ret, str, size);
return ret;
}
static inline instr_t *instr_ptr(compile_ctx_t *ctx, unsigned id)
{
assert(id < ctx->instr_cnt);
return ctx->code->instrs + id;
}
static unsigned push_instr(compile_ctx_t *ctx, vbsop_t op)
{
assert(ctx->instr_size && ctx->instr_size >= ctx->instr_cnt);
if(ctx->instr_size == ctx->instr_cnt) {
instr_t *new_instr;
new_instr = heap_realloc(ctx->code->instrs, ctx->instr_size*2*sizeof(instr_t));
if(!new_instr)
return 0;
ctx->code->instrs = new_instr;
ctx->instr_size *= 2;
}
ctx->code->instrs[ctx->instr_cnt].op = op;
return ctx->instr_cnt++;
}
static HRESULT push_instr_int(compile_ctx_t *ctx, vbsop_t op, LONG arg)
{
unsigned ret;
ret = push_instr(ctx, op);
if(!ret)
return E_OUTOFMEMORY;
instr_ptr(ctx, ret)->arg1.lng = arg;
return S_OK;
}
static HRESULT push_instr_uint(compile_ctx_t *ctx, vbsop_t op, unsigned arg)
{
unsigned ret;
ret = push_instr(ctx, op);
if(!ret)
return E_OUTOFMEMORY;
instr_ptr(ctx, ret)->arg1.uint = arg;
return S_OK;
}
static HRESULT push_instr_addr(compile_ctx_t *ctx, vbsop_t op, unsigned arg)
{
unsigned ret;
ret = push_instr(ctx, op);
if(!ret)
return E_OUTOFMEMORY;
instr_ptr(ctx, ret)->arg1.uint = arg;
return S_OK;
}
static HRESULT push_instr_str(compile_ctx_t *ctx, vbsop_t op, const WCHAR *arg)
{
unsigned instr;
WCHAR *str;
str = compiler_alloc_string(ctx->code, arg);
if(!str)
return E_OUTOFMEMORY;
instr = push_instr(ctx, op);
if(!instr)
return E_OUTOFMEMORY;
instr_ptr(ctx, instr)->arg1.str = str;
return S_OK;
}
static HRESULT push_instr_double(compile_ctx_t *ctx, vbsop_t op, double arg)
{
unsigned instr;
double *d;
d = compiler_alloc(ctx->code, sizeof(double));
if(!d)
return E_OUTOFMEMORY;
instr = push_instr(ctx, op);
if(!instr)
return E_OUTOFMEMORY;
*d = arg;
instr_ptr(ctx, instr)->arg1.dbl = d;
return S_OK;
}
static BSTR alloc_bstr_arg(compile_ctx_t *ctx, const WCHAR *str)
{
if(!ctx->code->bstr_pool_size) {
ctx->code->bstr_pool = heap_alloc(8 * sizeof(BSTR));
if(!ctx->code->bstr_pool)
return NULL;
ctx->code->bstr_pool_size = 8;
}else if(ctx->code->bstr_pool_size == ctx->code->bstr_cnt) {
BSTR *new_pool;
new_pool = heap_realloc(ctx->code->bstr_pool, ctx->code->bstr_pool_size*2*sizeof(BSTR));
if(!new_pool)
return NULL;
ctx->code->bstr_pool = new_pool;
ctx->code->bstr_pool_size *= 2;
}
ctx->code->bstr_pool[ctx->code->bstr_cnt] = SysAllocString(str);
if(!ctx->code->bstr_pool[ctx->code->bstr_cnt])
return NULL;
return ctx->code->bstr_pool[ctx->code->bstr_cnt++];
}
static HRESULT push_instr_bstr(compile_ctx_t *ctx, vbsop_t op, const WCHAR *arg)
{
unsigned instr;
BSTR bstr;
bstr = alloc_bstr_arg(ctx, arg);
if(!bstr)
return E_OUTOFMEMORY;
instr = push_instr(ctx, op);
if(!instr)
return E_OUTOFMEMORY;
instr_ptr(ctx, instr)->arg1.bstr = bstr;
return S_OK;
}
static HRESULT push_instr_bstr_uint(compile_ctx_t *ctx, vbsop_t op, const WCHAR *arg1, unsigned arg2)
{
unsigned instr;
BSTR bstr;
bstr = alloc_bstr_arg(ctx, arg1);
if(!bstr)
return E_OUTOFMEMORY;
instr = push_instr(ctx, op);
if(!instr)
return E_OUTOFMEMORY;
instr_ptr(ctx, instr)->arg1.bstr = bstr;
instr_ptr(ctx, instr)->arg2.uint = arg2;
return S_OK;
}
#define LABEL_FLAG 0x80000000
static unsigned alloc_label(compile_ctx_t *ctx)
{
if(!ctx->labels_size) {
ctx->labels = heap_alloc(8 * sizeof(*ctx->labels));
if(!ctx->labels)
return 0;
ctx->labels_size = 8;
}else if(ctx->labels_size == ctx->labels_cnt) {
unsigned *new_labels;
new_labels = heap_realloc(ctx->labels, 2*ctx->labels_size*sizeof(*ctx->labels));
if(!new_labels)
return 0;
ctx->labels = new_labels;
ctx->labels_size *= 2;
}
return ctx->labels_cnt++ | LABEL_FLAG;
}
static inline void label_set_addr(compile_ctx_t *ctx, unsigned label)
{
assert(label & LABEL_FLAG);
ctx->labels[label & ~LABEL_FLAG] = ctx->instr_cnt;
}
static expression_t *lookup_const_decls(compile_ctx_t *ctx, const WCHAR *name, BOOL lookup_global)
{
const_decl_t *decl;
for(decl = ctx->const_decls; decl; decl = decl->next) {
if(!strcmpiW(decl->name, name))
return decl->value_expr;
}
if(!lookup_global)
return NULL;
for(decl = ctx->global_consts; decl; decl = decl->next) {
if(!strcmpiW(decl->name, name))
return decl->value_expr;
}
return NULL;
}
static HRESULT compile_args(compile_ctx_t *ctx, expression_t *args, unsigned *ret)
{
unsigned arg_cnt = 0;
HRESULT hres;
while(args) {
hres = compile_expression(ctx, args);
if(FAILED(hres))
return hres;
arg_cnt++;
args = args->next;
}
*ret = arg_cnt;
return S_OK;
}
static HRESULT compile_member_expression(compile_ctx_t *ctx, member_expression_t *expr, BOOL ret_val)
{
unsigned arg_cnt = 0;
HRESULT hres;
if(ret_val && !expr->args) {
expression_t *const_expr;
const_expr = lookup_const_decls(ctx, expr->identifier, TRUE);
if(const_expr)
return compile_expression(ctx, const_expr);
}
hres = compile_args(ctx, expr->args, &arg_cnt);
if(FAILED(hres))
return hres;
if(expr->obj_expr) {
hres = compile_expression(ctx, expr->obj_expr);
if(FAILED(hres))
return hres;
hres = push_instr_bstr_uint(ctx, ret_val ? OP_mcall : OP_mcallv, expr->identifier, arg_cnt);
}else {
hres = push_instr_bstr_uint(ctx, ret_val ? OP_icall : OP_icallv, expr->identifier, arg_cnt);
}
return hres;
}
static HRESULT compile_unary_expression(compile_ctx_t *ctx, unary_expression_t *expr, vbsop_t op)
{
HRESULT hres;
hres = compile_expression(ctx, expr->subexpr);
if(FAILED(hres))
return hres;
return push_instr(ctx, op) ? S_OK : E_OUTOFMEMORY;
}
static HRESULT compile_binary_expression(compile_ctx_t *ctx, binary_expression_t *expr, vbsop_t op)
{
HRESULT hres;
hres = compile_expression(ctx, expr->left);
if(FAILED(hres))
return hres;
hres = compile_expression(ctx, expr->right);
if(FAILED(hres))
return hres;
return push_instr(ctx, op) ? S_OK : E_OUTOFMEMORY;
}
static HRESULT compile_expression(compile_ctx_t *ctx, expression_t *expr)
{
switch(expr->type) {
case EXPR_ADD:
return compile_binary_expression(ctx, (binary_expression_t*)expr, OP_add);
case EXPR_AND:
return compile_binary_expression(ctx, (binary_expression_t*)expr, OP_and);
case EXPR_BOOL:
return push_instr_int(ctx, OP_bool, ((bool_expression_t*)expr)->value);
case EXPR_CONCAT:
return compile_binary_expression(ctx, (binary_expression_t*)expr, OP_concat);
case EXPR_DIV:
return compile_binary_expression(ctx, (binary_expression_t*)expr, OP_div);
case EXPR_DOUBLE:
return push_instr_double(ctx, OP_double, ((double_expression_t*)expr)->value);
case EXPR_EMPTY:
return push_instr(ctx, OP_empty) ? S_OK : E_OUTOFMEMORY;
case EXPR_EQUAL:
return compile_binary_expression(ctx, (binary_expression_t*)expr, OP_equal);
case EXPR_EQV:
return compile_binary_expression(ctx, (binary_expression_t*)expr, OP_eqv);
case EXPR_EXP:
return compile_binary_expression(ctx, (binary_expression_t*)expr, OP_exp);
case EXPR_GT:
return compile_binary_expression(ctx, (binary_expression_t*)expr, OP_gt);
case EXPR_GTEQ:
return compile_binary_expression(ctx, (binary_expression_t*)expr, OP_gteq);
case EXPR_IDIV:
return compile_binary_expression(ctx, (binary_expression_t*)expr, OP_idiv);
case EXPR_IS:
return compile_binary_expression(ctx, (binary_expression_t*)expr, OP_is);
case EXPR_IMP:
return compile_binary_expression(ctx, (binary_expression_t*)expr, OP_imp);
case EXPR_LT:
return compile_binary_expression(ctx, (binary_expression_t*)expr, OP_lt);
case EXPR_LTEQ:
return compile_binary_expression(ctx, (binary_expression_t*)expr, OP_lteq);
case EXPR_ME:
return push_instr(ctx, OP_me) ? S_OK : E_OUTOFMEMORY;
case EXPR_MEMBER:
return compile_member_expression(ctx, (member_expression_t*)expr, TRUE);
case EXPR_MOD:
return compile_binary_expression(ctx, (binary_expression_t*)expr, OP_mod);
case EXPR_MUL:
return compile_binary_expression(ctx, (binary_expression_t*)expr, OP_mul);
case EXPR_NEG:
return compile_unary_expression(ctx, (unary_expression_t*)expr, OP_neg);
case EXPR_NEQUAL:
return compile_binary_expression(ctx, (binary_expression_t*)expr, OP_nequal);
case EXPR_NEW:
return push_instr_str(ctx, OP_new, ((string_expression_t*)expr)->value);
case EXPR_NOT:
return compile_unary_expression(ctx, (unary_expression_t*)expr, OP_not);
case EXPR_NOTHING:
return push_instr(ctx, OP_nothing) ? S_OK : E_OUTOFMEMORY;
case EXPR_NULL:
return push_instr(ctx, OP_null) ? S_OK : E_OUTOFMEMORY;
case EXPR_OR:
return compile_binary_expression(ctx, (binary_expression_t*)expr, OP_or);
case EXPR_STRING:
return push_instr_str(ctx, OP_string, ((string_expression_t*)expr)->value);
case EXPR_SUB:
return compile_binary_expression(ctx, (binary_expression_t*)expr, OP_sub);
case EXPR_USHORT:
return push_instr_int(ctx, OP_short, ((int_expression_t*)expr)->value);
case EXPR_ULONG:
return push_instr_int(ctx, OP_long, ((int_expression_t*)expr)->value);
case EXPR_XOR:
return compile_binary_expression(ctx, (binary_expression_t*)expr, OP_xor);
default:
FIXME("Unimplemented expression type %d\n", expr->type);
return E_NOTIMPL;
}
return S_OK;
}
static HRESULT compile_if_statement(compile_ctx_t *ctx, if_statement_t *stat)
{
unsigned cnd_jmp, endif_label = 0;
elseif_decl_t *elseif_decl;
HRESULT hres;
hres = compile_expression(ctx, stat->expr);
if(FAILED(hres))
return hres;
cnd_jmp = push_instr(ctx, OP_jmp_false);
if(!cnd_jmp)
return E_OUTOFMEMORY;
hres = compile_statement(ctx, stat->if_stat);
if(FAILED(hres))
return hres;
if(stat->else_stat || stat->elseifs) {
endif_label = alloc_label(ctx);
if(!endif_label)
return E_OUTOFMEMORY;
hres = push_instr_addr(ctx, OP_jmp, endif_label);
if(FAILED(hres))
return hres;
}
for(elseif_decl = stat->elseifs; elseif_decl; elseif_decl = elseif_decl->next) {
instr_ptr(ctx, cnd_jmp)->arg1.uint = ctx->instr_cnt;
hres = compile_expression(ctx, elseif_decl->expr);
if(FAILED(hres))
return hres;
cnd_jmp = push_instr(ctx, OP_jmp_false);
if(!cnd_jmp)
return E_OUTOFMEMORY;
hres = compile_statement(ctx, elseif_decl->stat);
if(FAILED(hres))
return hres;
hres = push_instr_addr(ctx, OP_jmp, endif_label);
if(FAILED(hres))
return hres;
}
instr_ptr(ctx, cnd_jmp)->arg1.uint = ctx->instr_cnt;
if(stat->else_stat) {
hres = compile_statement(ctx, stat->else_stat);
if(FAILED(hres))
return hres;
}
if(endif_label)
label_set_addr(ctx, endif_label);
return S_OK;
}
static HRESULT compile_while_statement(compile_ctx_t *ctx, while_statement_t *stat)
{
unsigned start_addr, prev_label;
unsigned jmp_end;
HRESULT hres;
start_addr = ctx->instr_cnt;
hres = compile_expression(ctx, stat->expr);
if(FAILED(hres))
return hres;
jmp_end = push_instr(ctx, stat->stat.type == STAT_UNTIL ? OP_jmp_true : OP_jmp_false);
if(!jmp_end)
return E_OUTOFMEMORY;
prev_label = ctx->while_end_label;
if(stat->stat.type != STAT_WHILE && !(ctx->while_end_label = alloc_label(ctx)))
return E_OUTOFMEMORY;
hres = compile_statement(ctx, stat->body);
if(FAILED(hres))
return hres;
hres = push_instr_addr(ctx, OP_jmp, start_addr);
if(FAILED(hres))
return hres;
instr_ptr(ctx, jmp_end)->arg1.uint = ctx->instr_cnt;
if(stat->stat.type != STAT_WHILE) {
label_set_addr(ctx, ctx->while_end_label);
ctx->while_end_label = prev_label;
}
return S_OK;
}
static HRESULT compile_dowhile_statement(compile_ctx_t *ctx, while_statement_t *stat)
{
unsigned start_addr, prev_label;
HRESULT hres;
start_addr = ctx->instr_cnt;
prev_label = ctx->while_end_label;
if(!(ctx->while_end_label = alloc_label(ctx)))
return E_OUTOFMEMORY;
hres = compile_statement(ctx, stat->body);
if(FAILED(hres))
return hres;
hres = compile_expression(ctx, stat->expr);
if(FAILED(hres))
return hres;
hres = push_instr_addr(ctx, stat->stat.type == STAT_DOUNTIL ? OP_jmp_false : OP_jmp_true, start_addr);
if(FAILED(hres))
return hres;
label_set_addr(ctx, ctx->while_end_label);
ctx->while_end_label = prev_label;
return S_OK;
}
static HRESULT compile_foreach_statement(compile_ctx_t *ctx, foreach_statement_t *stat)
{
FIXME("for each loop not implemented\n");
return E_NOTIMPL;
}
static HRESULT compile_forto_statement(compile_ctx_t *ctx, forto_statement_t *stat)
{
unsigned step_instr, instr, prev_label;
BSTR identifier;
HRESULT hres;
identifier = alloc_bstr_arg(ctx, stat->identifier);
if(!identifier)
return E_OUTOFMEMORY;
hres = compile_expression(ctx, stat->from_expr);
if(FAILED(hres))
return hres;
instr = push_instr(ctx, OP_assign_ident);
if(!instr)
return E_OUTOFMEMORY;
instr_ptr(ctx, instr)->arg1.bstr = identifier;
hres = compile_expression(ctx, stat->to_expr);
if(FAILED(hres))
return hres;
if(!push_instr(ctx, OP_val))
return E_OUTOFMEMORY;
if(stat->step_expr) {
hres = compile_expression(ctx, stat->step_expr);
if(FAILED(hres))
return hres;
if(!push_instr(ctx, OP_val))
return E_OUTOFMEMORY;
}else {
hres = push_instr_int(ctx, OP_short, 1);
if(FAILED(hres))
return hres;
}
prev_label = ctx->for_end_label;
ctx->for_end_label = alloc_label(ctx);
if(!ctx->for_end_label)
return E_OUTOFMEMORY;
step_instr = push_instr(ctx, OP_step);
if(!step_instr)
return E_OUTOFMEMORY;
instr_ptr(ctx, step_instr)->arg2.bstr = identifier;
instr_ptr(ctx, step_instr)->arg1.uint = ctx->for_end_label;
hres = compile_statement(ctx, stat->body);
if(FAILED(hres))
return hres;
instr = push_instr(ctx, OP_incc);
if(!instr)
return E_OUTOFMEMORY;
instr_ptr(ctx, instr)->arg1.bstr = identifier;
hres = push_instr_addr(ctx, OP_jmp, step_instr);
if(FAILED(hres))
return hres;
label_set_addr(ctx, ctx->for_end_label);
ctx->for_end_label = prev_label;
return push_instr_uint(ctx, OP_pop, 2);
}
static HRESULT compile_assign_statement(compile_ctx_t *ctx, assign_statement_t *stat, BOOL is_set)
{
unsigned args_cnt;
vbsop_t op;
HRESULT hres;
hres = compile_expression(ctx, stat->value_expr);
if(FAILED(hres))
return hres;
if(stat->member_expr->obj_expr) {
hres = compile_expression(ctx, stat->member_expr->obj_expr);
if(FAILED(hres))
return hres;
op = is_set ? OP_set_member : OP_assign_member;
}else {
op = is_set ? OP_set_ident : OP_assign_ident;
}
hres = compile_args(ctx, stat->member_expr->args, &args_cnt);
if(FAILED(hres))
return hres;
return push_instr_bstr_uint(ctx, op, stat->member_expr->identifier, args_cnt);
}
static BOOL lookup_dim_decls(compile_ctx_t *ctx, const WCHAR *name)
{
dim_decl_t *dim_decl;
for(dim_decl = ctx->dim_decls; dim_decl; dim_decl = dim_decl->next) {
if(!strcmpiW(dim_decl->name, name))
return TRUE;
}
return FALSE;
}
static BOOL lookup_args_name(compile_ctx_t *ctx, const WCHAR *name)
{
unsigned i;
for(i = 0; i < ctx->func->arg_cnt; i++) {
if(!strcmpiW(ctx->func->args[i].name, name))
return TRUE;
}
return FALSE;
}
static HRESULT compile_dim_statement(compile_ctx_t *ctx, dim_statement_t *stat)
{
dim_decl_t *dim_decl = stat->dim_decls;
while(1) {
if(lookup_dim_decls(ctx, dim_decl->name) || lookup_args_name(ctx, dim_decl->name)
|| lookup_const_decls(ctx, dim_decl->name, FALSE)) {
FIXME("dim %s name redefined\n", debugstr_w(dim_decl->name));
return E_FAIL;
}
ctx->func->var_cnt++;
if(!dim_decl->next)
break;
dim_decl = dim_decl->next;
}
dim_decl->next = ctx->dim_decls;
ctx->dim_decls = stat->dim_decls;
return S_OK;
}
static HRESULT compile_const_statement(compile_ctx_t *ctx, const_statement_t *stat)
{
const_decl_t *decl, *next_decl = stat->decls;
do {
decl = next_decl;
if(lookup_const_decls(ctx, decl->name, FALSE) || lookup_args_name(ctx, decl->name)
|| lookup_dim_decls(ctx, decl->name)) {
FIXME("%s redefined\n", debugstr_w(decl->name));
return E_FAIL;
}
if(ctx->func->type == FUNC_GLOBAL) {
HRESULT hres;
hres = compile_expression(ctx, decl->value_expr);
if(FAILED(hres))
return hres;
hres = push_instr_bstr(ctx, OP_const, decl->name);
if(FAILED(hres))
return hres;
}
next_decl = decl->next;
decl->next = ctx->const_decls;
ctx->const_decls = decl;
} while(next_decl);
return S_OK;
}
static HRESULT compile_function_statement(compile_ctx_t *ctx, function_statement_t *stat)
{
if(ctx->func != &ctx->code->global_code) {
FIXME("Function is not in the global code\n");
return E_FAIL;
}
stat->func_decl->next = ctx->func_decls;
ctx->func_decls = stat->func_decl;
return S_OK;
}
static HRESULT compile_exitdo_statement(compile_ctx_t *ctx)
{
if(!ctx->while_end_label) {
FIXME("Exit Do outside Do Loop\n");
return E_FAIL;
}
return push_instr_addr(ctx, OP_jmp, ctx->while_end_label);
}
static HRESULT compile_exitfor_statement(compile_ctx_t *ctx)
{
if(!ctx->for_end_label) {
FIXME("Exit For outside For Loop\n");
return E_FAIL;
}
return push_instr_addr(ctx, OP_jmp, ctx->for_end_label);
}
static HRESULT compile_exitsub_statement(compile_ctx_t *ctx)
{
if(!ctx->sub_end_label) {
FIXME("Exit Sub outside Sub?\n");
return E_FAIL;
}
return push_instr_addr(ctx, OP_jmp, ctx->sub_end_label);
}
static HRESULT compile_exitfunc_statement(compile_ctx_t *ctx)
{
if(!ctx->func_end_label) {
FIXME("Exit Function outside Function?\n");
return E_FAIL;
}
return push_instr_addr(ctx, OP_jmp, ctx->func_end_label);
}
static HRESULT compile_exitprop_statement(compile_ctx_t *ctx)
{
if(!ctx->prop_end_label) {
FIXME("Exit Property outside Property?\n");
return E_FAIL;
}
return push_instr_addr(ctx, OP_jmp, ctx->prop_end_label);
}
static HRESULT compile_onerror_statement(compile_ctx_t *ctx, onerror_statement_t *stat)
{
return push_instr_int(ctx, OP_errmode, stat->resume_next);
}
static HRESULT compile_statement(compile_ctx_t *ctx, statement_t *stat)
{
HRESULT hres;
while(stat) {
switch(stat->type) {
case STAT_ASSIGN:
hres = compile_assign_statement(ctx, (assign_statement_t*)stat, FALSE);
break;
case STAT_CALL:
hres = compile_member_expression(ctx, ((call_statement_t*)stat)->expr, FALSE);
break;
case STAT_CONST:
hres = compile_const_statement(ctx, (const_statement_t*)stat);
break;
case STAT_DIM:
hres = compile_dim_statement(ctx, (dim_statement_t*)stat);
break;
case STAT_DOWHILE:
case STAT_DOUNTIL:
hres = compile_dowhile_statement(ctx, (while_statement_t*)stat);
break;
case STAT_EXITDO:
hres = compile_exitdo_statement(ctx);
break;
case STAT_EXITFOR:
hres = compile_exitfor_statement(ctx);
break;
case STAT_EXITFUNC:
hres = compile_exitfunc_statement(ctx);
break;
case STAT_EXITPROP:
hres = compile_exitprop_statement(ctx);
break;
case STAT_EXITSUB:
hres = compile_exitsub_statement(ctx);
break;
case STAT_FOREACH:
hres = compile_foreach_statement(ctx, (foreach_statement_t*)stat);
break;
case STAT_FORTO:
hres = compile_forto_statement(ctx, (forto_statement_t*)stat);
break;
case STAT_FUNC:
hres = compile_function_statement(ctx, (function_statement_t*)stat);
break;
case STAT_IF:
hres = compile_if_statement(ctx, (if_statement_t*)stat);
break;
case STAT_ONERROR:
hres = compile_onerror_statement(ctx, (onerror_statement_t*)stat);
break;
case STAT_SET:
hres = compile_assign_statement(ctx, (assign_statement_t*)stat, TRUE);
break;
case STAT_STOP:
hres = push_instr(ctx, OP_stop) ? S_OK : E_OUTOFMEMORY;
break;
case STAT_UNTIL:
case STAT_WHILE:
case STAT_WHILELOOP:
hres = compile_while_statement(ctx, (while_statement_t*)stat);
break;
default:
FIXME("Unimplemented statement type %d\n", stat->type);
hres = E_NOTIMPL;
}
if(FAILED(hres))
return hres;
stat = stat->next;
}
return S_OK;
}
static void resolve_labels(compile_ctx_t *ctx, unsigned off)
{
instr_t *instr;
for(instr = ctx->code->instrs+off; instr < ctx->code->instrs+ctx->instr_cnt; instr++) {
if(instr_info[instr->op].arg1_type == ARG_ADDR && (instr->arg1.uint & LABEL_FLAG)) {
assert((instr->arg1.uint & ~LABEL_FLAG) < ctx->labels_cnt);
instr->arg1.uint = ctx->labels[instr->arg1.uint & ~LABEL_FLAG];
}
assert(instr_info[instr->op].arg2_type != ARG_ADDR);
}
ctx->labels_cnt = 0;
}
static HRESULT compile_func(compile_ctx_t *ctx, statement_t *stat, function_t *func)
{
HRESULT hres;
func->code_off = ctx->instr_cnt;
ctx->while_end_label = 0;
ctx->for_end_label = 0;
ctx->sub_end_label = 0;
ctx->func_end_label = 0;
ctx->prop_end_label = 0;
switch(func->type) {
case FUNC_FUNCTION:
ctx->func_end_label = alloc_label(ctx);
if(!ctx->func_end_label)
return E_OUTOFMEMORY;
break;
case FUNC_SUB:
ctx->sub_end_label = alloc_label(ctx);
if(!ctx->sub_end_label)
return E_OUTOFMEMORY;
break;
case FUNC_PROPGET:
case FUNC_PROPLET:
case FUNC_PROPSET:
case FUNC_DEFGET:
ctx->prop_end_label = alloc_label(ctx);
if(!ctx->prop_end_label)
return E_OUTOFMEMORY;
break;
case FUNC_GLOBAL:
break;
}
ctx->func = func;
ctx->dim_decls = NULL;
ctx->const_decls = NULL;
hres = compile_statement(ctx, stat);
ctx->func = NULL;
if(FAILED(hres))
return hres;
assert(!ctx->while_end_label);
assert(!ctx->for_end_label);
if(ctx->sub_end_label)
label_set_addr(ctx, ctx->sub_end_label);
if(ctx->func_end_label)
label_set_addr(ctx, ctx->func_end_label);
if(ctx->prop_end_label)
label_set_addr(ctx, ctx->prop_end_label);
if(!push_instr(ctx, OP_ret))
return E_OUTOFMEMORY;
resolve_labels(ctx, func->code_off);
if(func->var_cnt) {
dim_decl_t *dim_decl;
if(func->type == FUNC_GLOBAL) {
dynamic_var_t *new_var;
func->var_cnt = 0;
for(dim_decl = ctx->dim_decls; dim_decl; dim_decl = dim_decl->next) {
new_var = compiler_alloc(ctx->code, sizeof(*new_var));
if(!new_var)
return E_OUTOFMEMORY;
new_var->name = compiler_alloc_string(ctx->code, dim_decl->name);
if(!new_var->name)
return E_OUTOFMEMORY;
V_VT(&new_var->v) = VT_EMPTY;
new_var->is_const = FALSE;
new_var->next = ctx->global_vars;
ctx->global_vars = new_var;
}
}else {
unsigned i;
func->vars = compiler_alloc(ctx->code, func->var_cnt * sizeof(var_desc_t));
if(!func->vars)
return E_OUTOFMEMORY;
for(dim_decl = ctx->dim_decls, i=0; dim_decl; dim_decl = dim_decl->next, i++) {
func->vars[i].name = compiler_alloc_string(ctx->code, dim_decl->name);
if(!func->vars[i].name)
return E_OUTOFMEMORY;
}
assert(i == func->var_cnt);
}
}
return S_OK;
}
static BOOL lookup_funcs_name(compile_ctx_t *ctx, const WCHAR *name)
{
function_t *iter;
for(iter = ctx->funcs; iter; iter = iter->next) {
if(!strcmpiW(iter->name, name))
return TRUE;
}
return FALSE;
}
static HRESULT create_function(compile_ctx_t *ctx, function_decl_t *decl, function_t **ret)
{
function_t *func;
HRESULT hres;
if(lookup_dim_decls(ctx, decl->name) || lookup_funcs_name(ctx, decl->name) || lookup_const_decls(ctx, decl->name, FALSE)) {
FIXME("%s: redefinition\n", debugstr_w(decl->name));
return E_FAIL;
}
func = compiler_alloc(ctx->code, sizeof(*func));
if(!func)
return E_OUTOFMEMORY;
func->name = compiler_alloc_string(ctx->code, decl->name);
if(!func->name)
return E_OUTOFMEMORY;
func->vars = NULL;
func->var_cnt = 0;
func->code_ctx = ctx->code;
func->type = decl->type;
func->is_public = decl->is_public;
func->arg_cnt = 0;
if(decl->args) {
arg_decl_t *arg;
unsigned i;
for(arg = decl->args; arg; arg = arg->next)
func->arg_cnt++;
func->args = compiler_alloc(ctx->code, func->arg_cnt * sizeof(arg_desc_t));
if(!func->args)
return E_OUTOFMEMORY;
for(i = 0, arg = decl->args; arg; arg = arg->next, i++) {
func->args[i].name = compiler_alloc_string(ctx->code, arg->name);
if(!func->args[i].name)
return E_OUTOFMEMORY;
func->args[i].by_ref = arg->by_ref;
}
}else {
func->args = NULL;
}
hres = compile_func(ctx, decl->body, func);
if(FAILED(hres))
return hres;
*ret = func;
return S_OK;
}
static BOOL lookup_class_name(compile_ctx_t *ctx, const WCHAR *name)
{
class_desc_t *iter;
for(iter = ctx->classes; iter; iter = iter->next) {
if(!strcmpiW(iter->name, name))
return TRUE;
}
return FALSE;
}
static HRESULT create_class_funcprop(compile_ctx_t *ctx, function_decl_t *func_decl, vbdisp_funcprop_desc_t *desc)
{
vbdisp_invoke_type_t invoke_type;
function_decl_t *funcprop_decl;
HRESULT hres;
desc->name = compiler_alloc_string(ctx->code, func_decl->name);
if(!desc->name)
return E_OUTOFMEMORY;
for(funcprop_decl = func_decl; funcprop_decl; funcprop_decl = funcprop_decl->next_prop_func) {
switch(funcprop_decl->type) {
case FUNC_FUNCTION:
case FUNC_SUB:
case FUNC_PROPGET:
case FUNC_DEFGET:
invoke_type = VBDISP_CALLGET;
break;
case FUNC_PROPLET:
invoke_type = VBDISP_LET;
break;
case FUNC_PROPSET:
invoke_type = VBDISP_SET;
break;
default:
assert(0);
}
assert(!desc->entries[invoke_type]);
if(funcprop_decl->is_public)
desc->is_public = TRUE;
hres = create_function(ctx, funcprop_decl, desc->entries+invoke_type);
if(FAILED(hres))
return hres;
}
return S_OK;
}
static BOOL lookup_class_funcs(class_desc_t *class_desc, const WCHAR *name)
{
unsigned i;
for(i=0; i < class_desc->func_cnt; i++) {
if(class_desc->funcs[i].name && !strcmpiW(class_desc->funcs[i].name, name))
return TRUE;
}
return FALSE;
}
static HRESULT compile_class(compile_ctx_t *ctx, class_decl_t *class_decl)
{
function_decl_t *func_decl, *func_prop_decl;
class_prop_decl_t *prop_decl;
class_desc_t *class_desc;
unsigned i;
HRESULT hres;
static const WCHAR class_initializeW[] = {'c','l','a','s','s','_','i','n','i','t','i','a','l','i','z','e',0};
static const WCHAR class_terminateW[] = {'c','l','a','s','s','_','t','e','r','m','i','n','a','t','e',0};
if(lookup_dim_decls(ctx, class_decl->name) || lookup_funcs_name(ctx, class_decl->name)
|| lookup_const_decls(ctx, class_decl->name, FALSE) || lookup_class_name(ctx, class_decl->name)) {
FIXME("%s: redefinition\n", debugstr_w(class_decl->name));
return E_FAIL;
}
class_desc = compiler_alloc_zero(ctx->code, sizeof(*class_desc));
if(!class_desc)
return E_OUTOFMEMORY;
class_desc->name = compiler_alloc_string(ctx->code, class_decl->name);
if(!class_desc->name)
return E_OUTOFMEMORY;
class_desc->func_cnt = 1; /* always allocate slot for default getter */
for(func_decl = class_decl->funcs; func_decl; func_decl = func_decl->next) {
for(func_prop_decl = func_decl; func_prop_decl; func_prop_decl = func_prop_decl->next_prop_func) {
if(func_prop_decl->type == FUNC_DEFGET)
break;
}
if(!func_prop_decl)
class_desc->func_cnt++;
}
class_desc->funcs = compiler_alloc(ctx->code, class_desc->func_cnt*sizeof(*class_desc->funcs));
if(!class_desc->funcs)
return E_OUTOFMEMORY;
memset(class_desc->funcs, 0, class_desc->func_cnt*sizeof(*class_desc->funcs));
for(func_decl = class_decl->funcs, i=1; func_decl; func_decl = func_decl->next, i++) {
for(func_prop_decl = func_decl; func_prop_decl; func_prop_decl = func_prop_decl->next_prop_func) {
if(func_prop_decl->type == FUNC_DEFGET) {
i--;
break;
}
}
if(!strcmpiW(class_initializeW, func_decl->name)) {
if(func_decl->type != FUNC_SUB) {
FIXME("class initializer is not sub\n");
return E_FAIL;
}
class_desc->class_initialize_id = i;
}else if(!strcmpiW(class_terminateW, func_decl->name)) {
if(func_decl->type != FUNC_SUB) {
FIXME("class terminator is not sub\n");
return E_FAIL;
}
class_desc->class_terminate_id = i;
}
hres = create_class_funcprop(ctx, func_decl, class_desc->funcs + (func_prop_decl ? 0 : i));
if(FAILED(hres))
return hres;
}
for(prop_decl = class_decl->props; prop_decl; prop_decl = prop_decl->next)
class_desc->prop_cnt++;
class_desc->props = compiler_alloc(ctx->code, class_desc->prop_cnt*sizeof(*class_desc->props));
if(!class_desc->props)
return E_OUTOFMEMORY;
for(prop_decl = class_decl->props, i=0; prop_decl; prop_decl = prop_decl->next, i++) {
if(lookup_class_funcs(class_desc, prop_decl->name)) {
FIXME("Property %s redefined\n", debugstr_w(prop_decl->name));
return E_FAIL;
}
class_desc->props[i].name = compiler_alloc_string(ctx->code, prop_decl->name);
if(!class_desc->props[i].name)
return E_OUTOFMEMORY;
class_desc->props[i].is_public = prop_decl->is_public;
}
class_desc->next = ctx->classes;
ctx->classes = class_desc;
return S_OK;
}
static BOOL lookup_script_identifier(script_ctx_t *script, const WCHAR *identifier)
{
class_desc_t *class;
dynamic_var_t *var;
function_t *func;
for(var = script->global_vars; var; var = var->next) {
if(!strcmpiW(var->name, identifier))
return TRUE;
}
for(func = script->global_funcs; func; func = func->next) {
if(!strcmpiW(func->name, identifier))
return TRUE;
}
for(class = script->classes; class; class = class->next) {
if(!strcmpiW(class->name, identifier))
return TRUE;
}
return FALSE;
}
static HRESULT check_script_collisions(compile_ctx_t *ctx, script_ctx_t *script)
{
class_desc_t *class;
dynamic_var_t *var;
function_t *func;
for(var = ctx->global_vars; var; var = var->next) {
if(lookup_script_identifier(script, var->name)) {
FIXME("%s: redefined\n", debugstr_w(var->name));
return E_FAIL;
}
}
for(func = ctx->funcs; func; func = func->next) {
if(lookup_script_identifier(script, func->name)) {
FIXME("%s: redefined\n", debugstr_w(func->name));
return E_FAIL;
}
}
for(class = ctx->classes; class; class = class->next) {
if(lookup_script_identifier(script, class->name)) {
FIXME("%s: redefined\n", debugstr_w(class->name));
return E_FAIL;
}
}
return S_OK;
}
void release_vbscode(vbscode_t *code)
{
unsigned i;
list_remove(&code->entry);
for(i=0; i < code->bstr_cnt; i++)
SysFreeString(code->bstr_pool[i]);
vbsheap_free(&code->heap);
heap_free(code->bstr_pool);
heap_free(code->source);
heap_free(code->instrs);
heap_free(code);
}
static vbscode_t *alloc_vbscode(compile_ctx_t *ctx, const WCHAR *source)
{
vbscode_t *ret;
ret = heap_alloc(sizeof(*ret));
if(!ret)
return NULL;
ret->source = heap_strdupW(source);
if(!ret->source) {
heap_free(ret);
return NULL;
}
ret->instrs = heap_alloc(32*sizeof(instr_t));
if(!ret->instrs) {
release_vbscode(ret);
return NULL;
}
ctx->instr_cnt = 1;
ctx->instr_size = 32;
vbsheap_init(&ret->heap);
ret->option_explicit = ctx->parser.option_explicit;
ret->bstr_pool = NULL;
ret->bstr_pool_size = 0;
ret->bstr_cnt = 0;
ret->global_executed = FALSE;
ret->global_code.type = FUNC_GLOBAL;
ret->global_code.name = NULL;
ret->global_code.code_ctx = ret;
ret->global_code.vars = NULL;
ret->global_code.var_cnt = 0;
ret->global_code.arg_cnt = 0;
ret->global_code.args = NULL;
list_init(&ret->entry);
return ret;
}
static void release_compiler(compile_ctx_t *ctx)
{
parser_release(&ctx->parser);
heap_free(ctx->labels);
if(ctx->code)
release_vbscode(ctx->code);
}
HRESULT compile_script(script_ctx_t *script, const WCHAR *src, vbscode_t **ret)
{
function_t *new_func;
function_decl_t *func_decl;
class_decl_t *class_decl;
compile_ctx_t ctx;
vbscode_t *code;
HRESULT hres;
hres = parse_script(&ctx.parser, src);
if(FAILED(hres))
return hres;
code = ctx.code = alloc_vbscode(&ctx, src);
if(!ctx.code)
return E_OUTOFMEMORY;
ctx.funcs = NULL;
ctx.func_decls = NULL;
ctx.global_vars = NULL;
ctx.dim_decls = NULL;
ctx.classes = NULL;
ctx.labels = NULL;
ctx.global_consts = NULL;
ctx.labels_cnt = ctx.labels_size = 0;
hres = compile_func(&ctx, ctx.parser.stats, &ctx.code->global_code);
if(FAILED(hres)) {
release_compiler(&ctx);
return hres;
}
ctx.global_consts = ctx.const_decls;
for(func_decl = ctx.func_decls; func_decl; func_decl = func_decl->next) {
hres = create_function(&ctx, func_decl, &new_func);
if(FAILED(hres)) {
release_compiler(&ctx);
return hres;
}
new_func->next = ctx.funcs;
ctx.funcs = new_func;
}
for(class_decl = ctx.parser.class_decls; class_decl; class_decl = class_decl->next) {
hres = compile_class(&ctx, class_decl);
if(FAILED(hres)) {
release_compiler(&ctx);
return hres;
}
}
hres = check_script_collisions(&ctx, script);
if(FAILED(hres)) {
release_compiler(&ctx);
return hres;
}
if(ctx.global_vars) {
dynamic_var_t *var;
for(var = ctx.global_vars; var->next; var = var->next);
var->next = script->global_vars;
script->global_vars = ctx.global_vars;
}
if(ctx.funcs) {
for(new_func = ctx.funcs; new_func->next; new_func = new_func->next);
new_func->next = script->global_funcs;
script->global_funcs = ctx.funcs;
}
if(ctx.classes) {
class_desc_t *class = ctx.classes;
while(1) {
class->ctx = script;
if(!class->next)
break;
class = class->next;
}
class->next = script->classes;
script->classes = ctx.classes;
}
if(TRACE_ON(vbscript_disas))
dump_code(&ctx);
ctx.code = NULL;
release_compiler(&ctx);
list_add_tail(&script->code_list, &code->entry);
*ret = code;
return S_OK;
}
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