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vbscript: Added support for comparing to null.

This commit is contained in:
Jacek Caban 2012-09-10 10:35:17 +02:00 committed by Alexandre Julliard
parent a4869de7fa
commit 167174d88b
2 changed files with 33 additions and 10 deletions
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30
dlls/vbscript/interp.c
View File

@ -279,6 +279,13 @@ static HRESULT stack_push(exec_ctx_t *ctx, VARIANT *v)
return S_OK;
}
static inline HRESULT stack_push_null(exec_ctx_t *ctx)
{
VARIANT v;
V_VT(&v) = VT_NULL;
return stack_push(ctx, &v);
}
static void stack_popn(exec_ctx_t *ctx, unsigned n)
{
while(n--)
@ -1143,12 +1150,8 @@ static HRESULT interp_empty(exec_ctx_t *ctx)
static HRESULT interp_null(exec_ctx_t *ctx)
{
VARIANT v;
TRACE("\n");
V_VT(&v) = VT_NULL;
return stack_push(ctx, &v);
return stack_push_null(ctx);
}
static HRESULT interp_nothing(exec_ctx_t *ctx)
@ -1306,11 +1309,6 @@ static HRESULT var_cmp(exec_ctx_t *ctx, VARIANT *l, VARIANT *r)
{
TRACE("%s %s\n", debugstr_variant(l), debugstr_variant(r));
if(V_VT(l) == VT_NULL || V_VT(r) == VT_NULL) {
FIXME("comparing nulls is not implemented\n");
return E_NOTIMPL;
}
/* FIXME: Fix comparing string to number */
return VarCmp(l, r, ctx->script->lcid, 0);
@ -1345,6 +1343,8 @@ static HRESULT interp_equal(exec_ctx_t *ctx)
hres = cmp_oper(ctx);
if(FAILED(hres))
return hres;
if(hres == VARCMP_NULL)
return stack_push_null(ctx);
V_VT(&v) = VT_BOOL;
V_BOOL(&v) = hres == VARCMP_EQ ? VARIANT_TRUE : VARIANT_FALSE;
@ -1361,6 +1361,8 @@ static HRESULT interp_nequal(exec_ctx_t *ctx)
hres = cmp_oper(ctx);
if(FAILED(hres))
return hres;
if(hres == VARCMP_NULL)
return stack_push_null(ctx);
V_VT(&v) = VT_BOOL;
V_BOOL(&v) = hres != VARCMP_EQ ? VARIANT_TRUE : VARIANT_FALSE;
@ -1377,6 +1379,8 @@ static HRESULT interp_gt(exec_ctx_t *ctx)
hres = cmp_oper(ctx);
if(FAILED(hres))
return hres;
if(hres == VARCMP_NULL)
return stack_push_null(ctx);
V_VT(&v) = VT_BOOL;
V_BOOL(&v) = hres == VARCMP_GT ? VARIANT_TRUE : VARIANT_FALSE;
@ -1393,6 +1397,8 @@ static HRESULT interp_gteq(exec_ctx_t *ctx)
hres = cmp_oper(ctx);
if(FAILED(hres))
return hres;
if(hres == VARCMP_NULL)
return stack_push_null(ctx);
V_VT(&v) = VT_BOOL;
V_BOOL(&v) = hres == VARCMP_GT || hres == VARCMP_EQ ? VARIANT_TRUE : VARIANT_FALSE;
@ -1409,6 +1415,8 @@ static HRESULT interp_lt(exec_ctx_t *ctx)
hres = cmp_oper(ctx);
if(FAILED(hres))
return hres;
if(hres == VARCMP_NULL)
return stack_push_null(ctx);
V_VT(&v) = VT_BOOL;
V_BOOL(&v) = hres == VARCMP_LT ? VARIANT_TRUE : VARIANT_FALSE;
@ -1425,6 +1433,8 @@ static HRESULT interp_lteq(exec_ctx_t *ctx)
hres = cmp_oper(ctx);
if(FAILED(hres))
return hres;
if(hres == VARCMP_NULL)
return stack_push_null(ctx);
V_VT(&v) = VT_BOOL;
V_BOOL(&v) = hres == VARCMP_LT || hres == VARCMP_EQ ? VARIANT_TRUE : VARIANT_FALSE;

13
dlls/vbscript/tests/lang.vbs
View File

@ -144,6 +144,19 @@ Call ok(1 = 1 < 0, "! 1 = 1 < 0")
Call ok(1 <= 2, "! 1 <= 2")
Call ok(2 <= 2, "! 2 <= 2")
Call ok(isNull(0 = null), "'(0 = null)' is not null")
Call ok(isNull(null = 1), "'(null = 1)' is not null")
Call ok(isNull(0 > null), "'(0 > null)' is not null")
Call ok(isNull(null > 1), "'(null > 1)' is not null")
Call ok(isNull(0 < null), "'(0 < null)' is not null")
Call ok(isNull(null < 1), "'(null < 1)' is not null")
Call ok(isNull(0 <> null), "'(0 <> null)' is not null")
Call ok(isNull(null <> 1), "'(null <> 1)' is not null")
Call ok(isNull(0 >= null), "'(0 >= null)' is not null")
Call ok(isNull(null >= 1), "'(null >= 1)' is not null")
Call ok(isNull(0 <= null), "'(0 <= null)' is not null")
Call ok(isNull(null <= 1), "'(null <= 1)' is not null")
x = 3
Call ok(2+2 = 4, "2+2 = " & (2+2))
Call ok(false + 6 + true = 5, "false + 6 + true <> 5")