From 0bd508db2f7e05d0317d3ab0e8eeb81219aa5572 Mon Sep 17 00:00:00 2001
From: Jacek Caban <jacek@codeweavers.com>
Date: Wed, 10 Sep 2008 21:05:14 +0200
Subject: [PATCH] jscript: Added this expression implementation.

---
 dlls/jscript/engine.c      | 16 +++++++++++++---
 dlls/jscript/engine.h      |  3 ++-
 dlls/jscript/jscript.c     |  2 +-
 dlls/jscript/tests/lang.js |  1 +
 4 files changed, 17 insertions(+), 5 deletions(-)

diff --git a/dlls/jscript/engine.c b/dlls/jscript/engine.c
index c15b05b1e3e..5119bb79782 100644
--- a/dlls/jscript/engine.c
+++ b/dlls/jscript/engine.c
@@ -132,7 +132,7 @@ void scope_release(scope_chain_t *scope)
     heap_free(scope);
 }
 
-HRESULT create_exec_ctx(DispatchEx *var_disp, scope_chain_t *scope, exec_ctx_t **ret)
+HRESULT create_exec_ctx(IDispatch *this_obj, DispatchEx *var_disp, scope_chain_t *scope, exec_ctx_t **ret)
 {
     exec_ctx_t *ctx;
 
@@ -140,6 +140,9 @@ HRESULT create_exec_ctx(DispatchEx *var_disp, scope_chain_t *scope, exec_ctx_t *
     if(!ctx)
         return E_OUTOFMEMORY;
 
+    IDispatch_AddRef(this_obj);
+    ctx->this_obj = this_obj;
+
     IDispatchEx_AddRef(_IDispatchEx_(var_disp));
     ctx->var_disp = var_disp;
 
@@ -161,6 +164,8 @@ void exec_release(exec_ctx_t *ctx)
         scope_release(ctx->scope_chain);
     if(ctx->var_disp)
         IDispatchEx_Release(_IDispatchEx_(ctx->var_disp));
+    if(ctx->this_obj)
+        IDispatch_Release(ctx->this_obj);
     heap_free(ctx);
 }
 
@@ -816,8 +821,13 @@ HRESULT call_expression_eval(exec_ctx_t *ctx, expression_t *_expr, DWORD flags,
 
 HRESULT this_expression_eval(exec_ctx_t *ctx, expression_t *expr, DWORD flags, jsexcept_t *ei, exprval_t *ret)
 {
-    FIXME("\n");
-    return E_NOTIMPL;
+    TRACE("\n");
+
+    ret->type = EXPRVAL_VARIANT;
+    V_VT(&ret->u.var) = VT_DISPATCH;
+    V_DISPATCH(&ret->u.var) = ctx->this_obj;
+    IDispatch_AddRef(ctx->this_obj);
+    return S_OK;
 }
 
 /* ECMA-262 3rd Edition    10.1.4 */
diff --git a/dlls/jscript/engine.h b/dlls/jscript/engine.h
index c8f41b0105c..57a68c2812b 100644
--- a/dlls/jscript/engine.h
+++ b/dlls/jscript/engine.h
@@ -76,6 +76,7 @@ struct _exec_ctx_t {
     parser_ctx_t *parser;
     scope_chain_t *scope_chain;
     DispatchEx *var_disp;
+    IDispatch *this_obj;
 };
 
 static inline void exec_addref(exec_ctx_t *ctx)
@@ -84,7 +85,7 @@ static inline void exec_addref(exec_ctx_t *ctx)
 }
 
 void exec_release(exec_ctx_t*);
-HRESULT create_exec_ctx(DispatchEx*,scope_chain_t*,exec_ctx_t**);
+HRESULT create_exec_ctx(IDispatch*,DispatchEx*,scope_chain_t*,exec_ctx_t**);
 HRESULT exec_source(exec_ctx_t*,parser_ctx_t*,source_elements_t*,jsexcept_t*,VARIANT*);
 
 typedef struct _statement_t statement_t;
diff --git a/dlls/jscript/jscript.c b/dlls/jscript/jscript.c
index a104aa9aadf..5646cb8cf7d 100644
--- a/dlls/jscript/jscript.c
+++ b/dlls/jscript/jscript.c
@@ -80,7 +80,7 @@ static HRESULT exec_global_code(JScript *This, parser_ctx_t *parser_ctx)
     VARIANT var;
     HRESULT hres;
 
-    hres = create_exec_ctx(This->ctx->script_disp, NULL, &exec_ctx);
+    hres = create_exec_ctx((IDispatch*)_IDispatchEx_(This->ctx->script_disp), This->ctx->script_disp, NULL, &exec_ctx);
     if(FAILED(hres))
         return hres;
 
diff --git a/dlls/jscript/tests/lang.js b/dlls/jscript/tests/lang.js
index 088468aa16f..4c26c2fd30e 100644
--- a/dlls/jscript/tests/lang.js
+++ b/dlls/jscript/tests/lang.js
@@ -68,5 +68,6 @@ ok(typeof(String.prototype) === "object", "typeof(String.prototype) is not objec
 ok(typeof(testFunc1) === "function", "typeof(testFunc1) is not function");
 ok(typeof(String) === "function", "typeof(String) is not function");
 ok(typeof(ScriptEngine) === "function", "typeof(ScriptEngine) is not function");
+ok(typeof(this) === "object", "typeof(this) is not object");
 
 reportSuccess();