From 413fe9a46200f9477d1b6bf2ba7a55b4f76b0760 Mon Sep 17 00:00:00 2001
From: Jacek Caban <jacek@codeweavers.com>
Date: Fri, 25 Nov 2011 12:06:30 +0100
Subject: [PATCH] jscript: Use bytecode for unary '-' expression.

---
 dlls/jscript/compile.c |  2 ++
 dlls/jscript/engine.c  | 22 ++++------------------
 dlls/jscript/engine.h  |  1 +
 dlls/jscript/parser.y  |  2 +-
 4 files changed, 8 insertions(+), 19 deletions(-)

diff --git a/dlls/jscript/compile.c b/dlls/jscript/compile.c
index 12dd04f20cf..17c949be18d 100644
--- a/dlls/jscript/compile.c
+++ b/dlls/jscript/compile.c
@@ -236,6 +236,8 @@ static HRESULT compile_expression(compiler_ctx_t *ctx, expression_t *expr)
         return compile_literal(ctx, ((literal_expression_t*)expr)->literal);
     case EXPR_LOGNEG:
         return compile_unary_expression(ctx, (unary_expression_t*)expr, OP_neg);
+    case EXPR_MINUS:
+        return compile_unary_expression(ctx, (unary_expression_t*)expr, OP_minus);
     case EXPR_NOTEQEQ:
         return compile_binary_expression(ctx, (binary_expression_t*)expr, OP_neq2);
     case EXPR_PLUS:
diff --git a/dlls/jscript/engine.c b/dlls/jscript/engine.c
index a0043265756..c4889f5ded7 100644
--- a/dlls/jscript/engine.c
+++ b/dlls/jscript/engine.c
@@ -2574,32 +2574,18 @@ HRESULT typeof_expression_eval(script_ctx_t *ctx, expression_t *_expr, DWORD fla
 }
 
 /* ECMA-262 3rd Edition    11.4.7 */
-HRESULT minus_expression_eval(script_ctx_t *ctx, expression_t *_expr, DWORD flags, jsexcept_t *ei, exprval_t *ret)
+HRESULT interp_minus(exec_ctx_t *ctx)
 {
-    unary_expression_t *expr = (unary_expression_t*)_expr;
-    exprval_t exprval;
-    VARIANT val, num;
+    VARIANT n;
     HRESULT hres;
 
     TRACE("\n");
 
-    hres = expr_eval(ctx, expr->expression, 0, ei, &exprval);
+    hres = stack_pop_number(ctx, &n);
     if(FAILED(hres))
         return hres;
 
-    hres = exprval_to_value(ctx, &exprval, ei, &val);
-    exprval_release(&exprval);
-    if(FAILED(hres))
-        return hres;
-
-    hres = to_number(ctx, &val, ei, &num);
-    VariantClear(&val);
-    if(FAILED(hres))
-        return hres;
-
-    ret->type = EXPRVAL_VARIANT;
-    num_set_val(&ret->u.var, -num_val(&num));
-    return S_OK;
+    return stack_push_number(ctx, -num_val(&n));
 }
 
 /* ECMA-262 3rd Edition    11.4.6 */
diff --git a/dlls/jscript/engine.h b/dlls/jscript/engine.h
index 736fe5ac058..dd319094d99 100644
--- a/dlls/jscript/engine.h
+++ b/dlls/jscript/engine.h
@@ -49,6 +49,7 @@ typedef struct _func_stack {
     X(eq2,        1, 0,0)                  \
     X(in,         1, 0,0)                  \
     X(int,        1, ARG_INT,    0)        \
+    X(minus,      1, 0,0)                  \
     X(neg,        1, 0,0)                  \
     X(neq2,       1, 0,0)                  \
     X(null,       1, 0,0)                  \
diff --git a/dlls/jscript/parser.y b/dlls/jscript/parser.y
index 2e8c0d8759c..3e7f0fe2083 100644
--- a/dlls/jscript/parser.y
+++ b/dlls/jscript/parser.y
@@ -1321,7 +1321,7 @@ static const expression_eval_t expression_eval_table[] = {
    delete_expression_eval,
    compiled_expression_eval,
    typeof_expression_eval,
-   minus_expression_eval,
+   compiled_expression_eval,
    compiled_expression_eval,
    post_increment_expression_eval,
    post_decrement_expression_eval,