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      1 // Copyright 2010 the V8 project authors. All rights reserved.
      2 // Redistribution and use in source and binary forms, with or without
      3 // modification, are permitted provided that the following conditions are
      4 // met:
      5 //
      6 //     * Redistributions of source code must retain the above copyright
      7 //       notice, this list of conditions and the following disclaimer.
      8 //     * Redistributions in binary form must reproduce the above
      9 //       copyright notice, this list of conditions and the following
     10 //       disclaimer in the documentation and/or other materials provided
     11 //       with the distribution.
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     13 //       contributors may be used to endorse or promote products derived
     14 //       from this software without specific prior written permission.
     15 //
     16 // THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
     17 // "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
     18 // LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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     20 // OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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     24 // THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
     25 // (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
     26 // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
     27 
     28 // Adapted from test/mjsunit/compiler/variables.js
     29 
     30 #include <limits.h>
     31 
     32 #include "src/v8.h"
     33 
     34 #include "src/api.h"
     35 #include "src/compilation-cache.h"
     36 #include "src/execution.h"
     37 #include "src/isolate.h"
     38 #include "src/parser.h"
     39 #include "src/platform.h"
     40 #include "src/snapshot.h"
     41 #include "src/unicode-inl.h"
     42 #include "src/utils.h"
     43 #include "test/cctest/cctest.h"
     44 
     45 using ::v8::Context;
     46 using ::v8::Extension;
     47 using ::v8::Function;
     48 using ::v8::FunctionTemplate;
     49 using ::v8::Handle;
     50 using ::v8::HandleScope;
     51 using ::v8::Local;
     52 using ::v8::Message;
     53 using ::v8::MessageCallback;
     54 using ::v8::Object;
     55 using ::v8::ObjectTemplate;
     56 using ::v8::Persistent;
     57 using ::v8::Script;
     58 using ::v8::StackTrace;
     59 using ::v8::String;
     60 using ::v8::TryCatch;
     61 using ::v8::Undefined;
     62 using ::v8::V8;
     63 using ::v8::Value;
     64 
     65 static void ExpectInt32(int32_t expected, Local<Value> result) {
     66   CHECK(result->IsInt32());
     67   CHECK_EQ(expected, result->Int32Value());
     68 }
     69 
     70 
     71 // Global variables.
     72 TEST(global_variables) {
     73   LocalContext env;
     74   v8::HandleScope scope(env->GetIsolate());
     75   Local<Value> result = CompileRun(
     76 "var x = 0;"
     77 "function f0() { return x; }"
     78 "f0();");
     79   ExpectInt32(0, result);
     80 }
     81 
     82 
     83 // Parameters.
     84 TEST(parameters) {
     85   LocalContext env;
     86   v8::HandleScope scope(env->GetIsolate());
     87   Local<Value> result = CompileRun(
     88 "function f1(x) { return x; }"
     89 "f1(1);");
     90   ExpectInt32(1, result);
     91 }
     92 
     93 
     94 // Stack-allocated locals.
     95 TEST(stack_allocated_locals) {
     96   LocalContext env;
     97   v8::HandleScope scope(env->GetIsolate());
     98   Local<Value> result = CompileRun(
     99 "function f2() { var x = 2; return x; }"
    100 "f2();");
    101   ExpectInt32(2, result);
    102 }
    103 
    104 
    105 // Context-allocated locals.  Local function forces x into f3's context.
    106 TEST(context_allocated_locals) {
    107   LocalContext env;
    108   v8::HandleScope scope(env->GetIsolate());
    109   Local<Value> result = CompileRun(
    110 "function f3(x) {"
    111 "  function g() { return x; }"
    112 "  return x;"
    113 "}"
    114 "f3(3);");
    115   ExpectInt32(3, result);
    116 }
    117 
    118 
    119 // Local function reads x from an outer context.
    120 TEST(read_from_outer_context) {
    121   LocalContext env;
    122   v8::HandleScope scope(env->GetIsolate());
    123   Local<Value> result = CompileRun(
    124 "function f4(x) {"
    125 "  function g() { return x; }"
    126 "  return g();"
    127 "}"
    128 "f4(4);");
    129   ExpectInt32(4, result);
    130 }
    131 
    132 
    133 // Local function reads x from an outer context.
    134 TEST(lookup_slots) {
    135   LocalContext env;
    136   v8::HandleScope scope(env->GetIsolate());
    137   Local<Value> result = CompileRun(
    138 "function f5(x) {"
    139 "  with ({}) return x;"
    140 "}"
    141 "f5(5);");
    142   ExpectInt32(5, result);
    143 }
    144