Jacek Caban : jscript: Use bytecode for comma expression implementation.

[Alexandre Julliard]

Module: wine
Branch: master
Commit: 47314a92d7c1d46739108ba21994ea3c2abba9af
URL:    http://source.winehq.org/git/wine.git/?a=commit;h=47314a92d7c1d46739108ba219...

Author: Jacek Caban 
Date:   Fri Nov 25 12:05:50 2011 +0100

jscript: Use bytecode for comma expression implementation.

---

dlls/jscript/compile.c |   17 +++++++++++++++++
 dlls/jscript/engine.c  |   28 ++++++++--------------------
 dlls/jscript/engine.h  |    2 +-
 dlls/jscript/parser.y  |    2 +-
 4 files changed, 27 insertions(+), 22 deletions(-)

diff --git a/dlls/jscript/compile.c b/dlls/jscript/compile.c
index 4b5b91b..77391bd 100644
--- a/dlls/jscript/compile.c
+++ b/dlls/jscript/compile.c
@@ -156,6 +156,21 @@ static HRESULT compile_unary_expression(compiler_ctx_t *ctx, unary_expression_t
     return push_instr(ctx, op) == -1 ? E_OUTOFMEMORY : S_OK;
 }

+/* ECMA-262 3rd Edition    11.14 */
+static HRESULT compile_comma_expression(compiler_ctx_t *ctx, binary_expression_t *expr)
+{
+    HRESULT hres;
+
+    hres = compile_expression(ctx, expr->expression1);
+    if(FAILED(hres))
+        return hres;
+
+    if(push_instr(ctx, OP_pop) == -1)
+        return E_OUTOFMEMORY;
+
+    return compile_expression(ctx, expr->expression2);
+}
+
 static HRESULT compile_interp_fallback(compiler_ctx_t *ctx, expression_t *expr)
 {
     unsigned instr;
@@ -211,6 +226,8 @@ static HRESULT compile_expression(compiler_ctx_t *ctx, expression_t *expr)
         return compile_binary_expression(ctx, (binary_expression_t*)expr, OP_add);
     case EXPR_BITNEG:
         return compile_unary_expression(ctx, (unary_expression_t*)expr, OP_bneg);
+    case EXPR_COMMA:
+        return compile_comma_expression(ctx, (binary_expression_t*)expr);
     case EXPR_EQEQ:
         return compile_binary_expression(ctx, (binary_expression_t*)expr, OP_eq2);
     case EXPR_IN:
diff --git a/dlls/jscript/engine.c b/dlls/jscript/engine.c
index e706407..87f873c 100644
--- a/dlls/jscript/engine.c
+++ b/dlls/jscript/engine.c
@@ -1910,26 +1910,6 @@ HRESULT property_value_expression_eval(script_ctx_t *ctx, expression_t *_expr, D
     return S_OK;
 }

-/* ECMA-262 3rd Edition    11.14 */
-HRESULT comma_expression_eval(script_ctx_t *ctx, expression_t *_expr, DWORD flags, jsexcept_t *ei, exprval_t *ret)
-{
-    binary_expression_t *expr = (binary_expression_t*)_expr;
-    VARIANT lval, rval;
-    HRESULT hres;
-
-    TRACE("\n");
-
-    hres = get_binary_expr_values(ctx, expr, ei, &lval, &rval);
-    if(FAILED(hres))
-        return hres;
-
-    VariantClear(&lval);
-
-    ret->type = EXPRVAL_VARIANT;
-    ret->u.var = rval;
-    return S_OK;
-}
-
 /* ECMA-262 3rd Edition    11.11 */
 HRESULT logical_or_expression_eval(script_ctx_t *ctx, expression_t *_expr, DWORD flags, jsexcept_t *ei, exprval_t *ret)
 {
@@ -3342,6 +3322,14 @@ HRESULT assign_xor_expression_eval(script_ctx_t *ctx, expression_t *_expr, DWORD
     return assign_oper_eval(ctx, expr->expression1, expr->expression2, xor_eval, ei, ret);
 }

+static HRESULT interp_pop(exec_ctx_t *ctx)
+{
+    TRACE("\n");
+
+    stack_popn(ctx, 1);
+    return S_OK;
+}
+
 static HRESULT interp_ret(exec_ctx_t *ctx)
 {
     TRACE("\n");
diff --git a/dlls/jscript/engine.h b/dlls/jscript/engine.h
index c42b2e8..a713e02 100644
--- a/dlls/jscript/engine.h
+++ b/dlls/jscript/engine.h
@@ -52,6 +52,7 @@ typedef struct _func_stack {
     X(neg,        1, 0,0)                  \
     X(neq2,       1, 0,0)                  \
     X(null,       1, 0,0)                  \
+    X(pop,        1, 0,0)                  \
     X(regexp,     1, ARG_STR,    ARG_INT)  \
     X(str,        1, ARG_STR,    0)        \
     X(this,       1, 0,0)                  \
@@ -534,7 +535,6 @@ HRESULT identifier_expression_eval(script_ctx_t*,expression_t*,DWORD,jsexcept_t*
 HRESULT array_literal_expression_eval(script_ctx_t*,expression_t*,DWORD,jsexcept_t*,exprval_t*) DECLSPEC_HIDDEN;
 HRESULT property_value_expression_eval(script_ctx_t*,expression_t*,DWORD,jsexcept_t*,exprval_t*) DECLSPEC_HIDDEN;

-HRESULT comma_expression_eval(script_ctx_t*,expression_t*,DWORD,jsexcept_t*,exprval_t*) DECLSPEC_HIDDEN;
 HRESULT logical_or_expression_eval(script_ctx_t*,expression_t*,DWORD,jsexcept_t*,exprval_t*) DECLSPEC_HIDDEN;
 HRESULT logical_and_expression_eval(script_ctx_t*,expression_t*,DWORD,jsexcept_t*,exprval_t*) DECLSPEC_HIDDEN;
 HRESULT binary_or_expression_eval(script_ctx_t*,expression_t*,DWORD,jsexcept_t*,exprval_t*) DECLSPEC_HIDDEN;
diff --git a/dlls/jscript/parser.y b/dlls/jscript/parser.y
index f051c0c..d8daa59 100644
--- a/dlls/jscript/parser.y
+++ b/dlls/jscript/parser.y
@@ -1305,7 +1305,7 @@ static expression_t *new_function_expression(parser_ctx_t *ctx, const WCHAR *ide
 }

static const expression_eval_t expression_eval_table[] = {
-   comma_expression_eval,
+   compiled_expression_eval,
    logical_or_expression_eval,
    logical_and_expression_eval,
    binary_or_expression_eval,