/* Copyright (c) 2013, Oracle and/or its affiliates. All rights reserved.

 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.

 *

 * This code is free software; you can redistribute it and/or modify it

 * under the terms of the GNU General Public License version 2 only, as

 * published by the Free Software Foundation.

 *

 * This code is distributed in the hope that it will be useful, but WITHOUT

 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or

 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License

 * version 2 for more details (a copy is included in the LICENSE file that

 * accompanied this code).

 *

 * You should have received a copy of the GNU General Public License version

 * 2 along with this work; if not, write to the Free Software Foundation,

 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.

 *

 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA

 * or visit www.oracle.com if you need additional information or have any

 * questions.

 *

 */

#include "precompiled.hpp"

#include "ci/ciMethodData.hpp"

#include "ci/ciReplay.hpp"

#include "ci/ciUtilities.hpp"

#include "compiler/compileBroker.hpp"

#include "memory/allocation.inline.hpp"

#include "memory/oopFactory.hpp"

#include "memory/resourceArea.hpp"

#include "utilities/copy.hpp"

#include "utilities/macros.hpp"

#ifndef PRODUCT

// ciReplay

typedef struct _ciMethodDataRecord {

} ciMethodDataRecord;

typedef struct _ciMethodRecord {

} ciMethodRecord;

static CompileReplay* replay_state;

class CompileReplay : public StackObj {

 private:

  const char* _error_message;

 public:

  CompileReplay(const char* filename, TRAPS) {

      fprintf(stderr, "ERROR: Can't open replay file %s\n", filename);

    }

    _error_message = NULL;

    test();

  }

  ~CompileReplay() {

  }

  void test() {

    assert(parse_int("test") == 1, "what");

    assert(parse_int("test") == 2, "what");

    assert(strcmp(parse_string(), "foo") == 0, "what");

    assert(parse_int("test") == 4, "what");

    assert(strcmp(parse_string(), "bar") == 0, "what");

    assert(parse_intptr_t("test") == 9, "what");

    assert(strcmp(parse_quoted_string(), "this is it") == 0, "what");

  }

  bool had_error() {

  }

  bool can_replay() {

  }

  void report_error(const char* msg) {

    _error_message = msg;

    }

  }

  int parse_int(const char* label) {

    if (had_error()) {

      return 0;

    }

    int v = 0;

    int read;

      report_error(label);

    } else {

    }

    return v;

  }

  intptr_t parse_intptr_t(const char* label) {

    if (had_error()) {

      return 0;

    }

    intptr_t v = 0;

    int read;

      report_error(label);

    } else {

    }

    return v;

  }

  void skip_ws() {

    // Skip any leading whitespace

    }

  }

  char* scan_and_terminate(char delim) {

    }

    }

      // nothing here

      return NULL;

    }

    return str;

  }

  char* parse_string() {

    if (had_error()) return NULL;

    skip_ws();

    return scan_and_terminate(' ');

  }

  char* parse_quoted_string() {

    if (had_error()) return NULL;

    skip_ws();

      return scan_and_terminate('"');

    } else {

      return scan_and_terminate(' ');

    }

  }

  const char* parse_escaped_string() {

    char* result = parse_quoted_string();

    if (result != NULL) {

      unescape_string(result);

    }

    return result;

  }

  // Look for the tag 'tag' followed by an

  bool parse_tag_and_count(const char* tag, int& length) {

    const char* t = parse_string();

    if (t == NULL) {

      return false;

    }

    if (strcmp(tag, t) != 0) {

      report_error(tag);

      return false;

    }

    length = parse_int("parse_tag_and_count");

    return !had_error();

  }

  // Parse a sequence of raw data encoded as bytes and return the

  // resulting data.

  char* parse_data(const char* tag, int& length) {

    if (!parse_tag_and_count(tag, length)) {

      return NULL;

    }

    char * result = NEW_RESOURCE_ARRAY(char, length);

    for (int i = 0; i < length; i++) {

      int val = parse_int("data");

      result[i] = val;

    }

    return result;

  }

  // Parse a standard chunk of data emitted as:

  //   'tag' <length> # # ...

  // Where each # is an intptr_t item

  intptr_t* parse_intptr_data(const char* tag, int& length) {

    if (!parse_tag_and_count(tag, length)) {

      return NULL;

    }

    intptr_t* result = NEW_RESOURCE_ARRAY(intptr_t, length);

    for (int i = 0; i < length; i++) {

      skip_ws();

      intptr_t val = parse_intptr_t("data");

      result[i] = val;

    }

    return result;

  }

  // Parse a possibly quoted version of a symbol into a symbolOop

  Symbol* parse_symbol(TRAPS) {

    const char* str = parse_escaped_string();

    if (str != NULL) {

      Symbol* sym = SymbolTable::lookup(str, (int)strlen(str), CHECK_NULL);

      return sym;

    }

    return NULL;

  }

  // Parse a valid klass name and look it up

  Klass* parse_klass(TRAPS) {

    const char* str = parse_escaped_string();

    Symbol* klass_name = SymbolTable::lookup(str, (int)strlen(str), CHECK_NULL);

    if (klass_name != NULL) {

      if (HAS_PENDING_EXCEPTION) {

        oop throwable = PENDING_EXCEPTION;

        java_lang_Throwable::print(throwable, tty);

        tty->cr();

        report_error(str);

        return NULL;

      }

      return k;

    }

    return NULL;

  }

  // Lookup a klass

  Klass* resolve_klass(const char* klass, TRAPS) {

    Symbol* klass_name = SymbolTable::lookup(klass, (int)strlen(klass), CHECK_NULL);

  }

  // Parse the standard tuple of <klass> <name> <signature>

  Method* parse_method(TRAPS) {

    InstanceKlass* k = (InstanceKlass*)parse_klass(CHECK_NULL);

    Symbol* method_name = parse_symbol(CHECK_NULL);

    Symbol* method_signature = parse_symbol(CHECK_NULL);

    Method* m = k->find_method(method_name, method_signature);

    if (m == NULL) {

      report_error("Can't find method");

    }

    return m;

  }

  // Process each line of the replay file executing each command until

  // the file ends.

  void process(TRAPS) {

    while(c != EOF) {

      }

    }

  }

  void process_command(TRAPS) {

    char* cmd = parse_string();

    if (cmd == NULL) {

      return;

    }

    if (strcmp("#", cmd) == 0) {

      // ignore

    } else if (strcmp("compile", cmd) == 0) {

      process_compile(CHECK);

    } else if (strcmp("ciMethod", cmd) == 0) {

      process_ciMethod(CHECK);

    } else if (strcmp("ciMethodData", cmd) == 0) {

      process_ciMethodData(CHECK);

    } else if (strcmp("staticfield", cmd) == 0) {

      process_staticfield(CHECK);

    } else if (strcmp("ciInstanceKlass", cmd) == 0) {

      process_ciInstanceKlass(CHECK);

    } else if (strcmp("instanceKlass", cmd) == 0) {

      process_instanceKlass(CHECK);

#if INCLUDE_JVMTI

    } else if (strcmp("JvmtiExport", cmd) == 0) {

      process_JvmtiExport(CHECK);

#endif // INCLUDE_JVMTI

    } else {

      report_error("unknown command");

    }

  }

  // validation of comp_level

  bool is_valid_comp_level(int comp_level) {

    const int msg_len = 256;

    char* msg = NULL;

    if (!is_compile(comp_level)) {

      msg = NEW_RESOURCE_ARRAY(char, msg_len);

      jio_snprintf(msg, msg_len, "%d isn't compilation level", comp_level);

    } else if (!TieredCompilation && (comp_level != CompLevel_highest_tier)) {

      msg = NEW_RESOURCE_ARRAY(char, msg_len);

      switch (comp_level) {

        case CompLevel_simple:

          jio_snprintf(msg, msg_len, "compilation level %d requires Client VM or TieredCompilation", comp_level);

          break;

        case CompLevel_full_optimization:

          jio_snprintf(msg, msg_len, "compilation level %d requires Server VM", comp_level);

          break;

        default:

          jio_snprintf(msg, msg_len, "compilation level %d requires TieredCompilation", comp_level);

      }

    }

    if (msg != NULL) {

      report_error(msg);

      return false;

    }

    return true;

  }

  void process_compile(TRAPS) {

    Method* method = parse_method(CHECK);

    if (had_error()) return;

    int entry_bci = parse_int("entry_bci");

    const char* comp_level_label = "comp_level";

    int comp_level = parse_int(comp_level_label);

    // old version w/o comp_level

    if (had_error() && (error_message() == comp_level_label)) {

      comp_level = CompLevel_full_optimization;

    }

    if (!is_valid_comp_level(comp_level)) {

      return;

    }