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vbscript: Added a hack for parameterized assignments with one argument.

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This commit is contained in:
Jacek Caban 2012-07-03 17:04:51 +02:00 committed by Alexandre Julliard
parent 0bd5ba82de
commit e56a5907a3
3 changed files with 42 additions and 12 deletions
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41
dlls/vbscript/compile.c
View file

@ -421,6 +421,8 @@ static HRESULT compile_expression(compile_ctx_t *ctx, expression_t *expr)
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_BRACKETS:
return compile_expression(ctx, ((unary_expression_t*)expr)->subexpr);
case EXPR_CONCAT:
return compile_binary_expression(ctx, (binary_expression_t*)expr, OP_concat);
case EXPR_DIV:
@ -691,14 +693,14 @@ static HRESULT compile_forto_statement(compile_ctx_t *ctx, forto_statement_t *st
return push_instr_uint(ctx, OP_pop, 2);
}
static HRESULT compile_assign_statement(compile_ctx_t *ctx, assign_statement_t *stat, BOOL is_set)
static HRESULT compile_assignment(compile_ctx_t *ctx, member_expression_t *member_expr, expression_t *value_expr, BOOL is_set)
{
unsigned args_cnt;
vbsop_t op;
HRESULT hres;
if(stat->member_expr->obj_expr) {
hres = compile_expression(ctx, stat->member_expr->obj_expr);
if(member_expr->obj_expr) {
hres = compile_expression(ctx, member_expr->obj_expr);
if(FAILED(hres))
return hres;
@ -707,15 +709,40 @@ static HRESULT compile_assign_statement(compile_ctx_t *ctx, assign_statement_t *
op = is_set ? OP_set_ident : OP_assign_ident;
}
hres = compile_expression(ctx, stat->value_expr);
hres = compile_expression(ctx, value_expr);
if(FAILED(hres))
return hres;
hres = compile_args(ctx, stat->member_expr->args, &args_cnt);
hres = compile_args(ctx, member_expr->args, &args_cnt);
if(FAILED(hres))
return hres;
return push_instr_bstr_uint(ctx, op, stat->member_expr->identifier, args_cnt);
return push_instr_bstr_uint(ctx, op, member_expr->identifier, args_cnt);
}
static HRESULT compile_assign_statement(compile_ctx_t *ctx, assign_statement_t *stat, BOOL is_set)
{
return compile_assignment(ctx, stat->member_expr, stat->value_expr, is_set);
}
static HRESULT compile_call_statement(compile_ctx_t *ctx, call_statement_t *stat)
{
/* It's challenging for parser to distinguish parameterized assignment with one argument from call
* with equality expression argument, so we do it in compiler. */
if(!stat->is_strict && stat->expr->args && !stat->expr->args->next && stat->expr->args->type == EXPR_EQUAL) {
binary_expression_t *eqexpr = (binary_expression_t*)stat->expr->args;
if(eqexpr->left->type == EXPR_BRACKETS) {
member_expression_t new_member = *stat->expr;
WARN("converting call expr to assign expr\n");
new_member.args = ((unary_expression_t*)eqexpr->left)->subexpr;
return compile_assignment(ctx, &new_member, eqexpr->right, FALSE);
}
}
return compile_member_expression(ctx, stat->expr, FALSE);
}
static BOOL lookup_dim_decls(compile_ctx_t *ctx, const WCHAR *name)
@ -874,7 +901,7 @@ static HRESULT compile_statement(compile_ctx_t *ctx, statement_t *stat)
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);
hres = compile_call_statement(ctx, (call_statement_t*)stat);
break;
case STAT_CONST:
hres = compile_const_statement(ctx, (const_statement_t*)stat);

2
dlls/vbscript/parse.h
View file

@ -20,6 +20,7 @@ typedef enum {
EXPR_ADD,
EXPR_AND,
EXPR_BOOL,
EXPR_BRACKETS,
EXPR_CONCAT,
EXPR_DIV,
EXPR_DOUBLE,
@ -127,6 +128,7 @@ typedef struct _statement_t {
typedef struct {
statement_t stat;
member_expression_t *expr;
BOOL is_strict;
} call_statement_t;
typedef struct {

11
dlls/vbscript/parser.y
View file

@ -47,7 +47,7 @@ static expression_t *new_new_expression(parser_ctx_t*,const WCHAR*);
static member_expression_t *new_member_expression(parser_ctx_t*,expression_t*,const WCHAR*);
static void *new_statement(parser_ctx_t*,statement_type_t,size_t);
static statement_t *new_call_statement(parser_ctx_t*,member_expression_t*);
static statement_t *new_call_statement(parser_ctx_t*,BOOL,member_expression_t*);
static statement_t *new_assign_statement(parser_ctx_t*,member_expression_t*,expression_t*);
static statement_t *new_set_statement(parser_ctx_t*,member_expression_t*,expression_t*);
static statement_t *new_dim_statement(parser_ctx_t*,dim_decl_t*);
@ -166,8 +166,8 @@ Statement
| SimpleStatement ':' { $$ = $1; }
SimpleStatement
: MemberExpression ArgumentList_opt { $1->args = $2; $$ = new_call_statement(ctx, $1); CHECK_ERROR; }
| tCALL MemberExpression Arguments_opt { $2->args = $3; $$ = new_call_statement(ctx, $2); CHECK_ERROR; }
: MemberExpression ArgumentList_opt { $1->args = $2; $$ = new_call_statement(ctx, FALSE, $1); CHECK_ERROR; }
| tCALL MemberExpression Arguments_opt { $2->args = $3; $$ = new_call_statement(ctx, TRUE, $2); CHECK_ERROR; }
| MemberExpression Arguments_opt '=' Expression
{ $1->args = $2; $$ = new_assign_statement(ctx, $1, $4); CHECK_ERROR; }
| tDIM DimDeclList { $$ = new_dim_statement(ctx, $2); CHECK_ERROR; }
@ -349,7 +349,7 @@ LiteralExpression
| tNOTHING { $$ = new_expression(ctx, EXPR_NOTHING, 0); CHECK_ERROR; }
PrimaryExpression
: '(' Expression ')' { $$ = $2; }
: '(' Expression ')' { $$ = new_unary_expression(ctx, EXPR_BRACKETS, $2); }
| tME { $$ = new_expression(ctx, EXPR_ME, 0); CHECK_ERROR; }
ClassDeclaration
@ -558,7 +558,7 @@ static void *new_statement(parser_ctx_t *ctx, statement_type_t type, size_t size
return stat;
}
static statement_t *new_call_statement(parser_ctx_t *ctx, member_expression_t *expr)
static statement_t *new_call_statement(parser_ctx_t *ctx, BOOL is_strict, member_expression_t *expr)
{
call_statement_t *stat;
@ -567,6 +567,7 @@ static statement_t *new_call_statement(parser_ctx_t *ctx, member_expression_t *e
return NULL;
stat->expr = expr;
stat->is_strict = is_strict;
return &stat->stat;
}