C - Good Design = Flexible Software: Give Your Software a 30-minuteWorkout(dictionary, key, value)

21st Century C: C Tips from the New School
(O'Reilly Media)
Ben Klemens (著)

開発環境

• OS X Yosemite - Apple (OS)
• Emacs (CUI)、BBEdit - Bare Bones Software, Inc. (GUI) (Text Editor)
• C (プログラミング言語)
• LLVM/Clang (コンパイラ, Xcode - Apple)

Head First Object-Oriented Analysis and Design: A Brain Friendly Guide to OOA&D (Brett McLaughlin (著)、 Gary Pollice (著)、 David West (著) 、 O'Reilly Media)のChapter 5. Good Design = Flexible Software: Give Your Software a 30-minute Workout、INVENTORY ROUNDUP(No. 3337)をC言語で考えてみる。

INVENTORY ROUNDUP(No. 3337)

コード(BBEdit, Emacs)

find_instrument.c

#include "dict.h"
#include "instrument_spec.h"
#include "inventory.h"

static void initialize_inventory(inventory *in) {
  /* ... */
  properties = dictionary_new();
  dictionary_add(properties, "instrument_type", "guitar");
  dictionary_add(properties, "builder", "martin");
  dictionary_add(properties, "model", "D");
  dictionary_add(properties, "type", "acoustic");
  dictionary_add(properties, "num_strings", 6);
  dictionary_add(properties, "top_wood", "adirondack");
  dictionary_add(properties, "back_wood", "mahogany");
  spec = instrument_spec_new();
  spec->properties = *(dictionary_copy(properties));
  dictionary_free(properties);
  in->add_instrument("122784", 5495.95, spec);
  instrument_spec_free(spec);

  properties = dictionary_new();
  dictionary_add(properties, "instrument_type", "guitar");
  dictionary_add(properties, "builder", "fender");
  dictionary_add(properties, "model", "stratocastor");
  dictionary_add(properties, "type", "electric");
  dictionary_add(properties, "num_strings", 6);
  dictionary_add(properties, "top_wood", "alder");
  dictionary_add(properties, "back_wood", "alder");
  spec = instrument_spec_new();
  spec->properties = *(dictionary_copy(properties));
  dictionary_free(properties);
  in->add_instrument("V95693", 1499.95, spec);
  instrument_spec_free(spec);  

  properties = dictionary_new();
  dictionary_add(properties, "instrument_type", "guitar");
  dictionary_add(properties, "builder", "fender");
  dictionary_add(properties, "model", "stratocastor");
  dictionary_add(properties, "type", "electric");
  dictionary_add(properties, "num_strings", 6);
  dictionary_add(properties, "top_wood", "alder");
  dictionary_add(properties, "back_wood", "alder");
  spec = instrument_spec_new();
  spec->properties = *(dictionary_copy(properties));
  dictionary_free(properties);
  in->add_instrument("V9512", 1549.95, spec);
  instrument_spec_free(spec);  

  properties = dictionary_new();
  dictionary_add(properties, "instrument_type", "guitar");
  dictionary_add(properties, "builder", "gibson");
  dictionary_add(properties, "model", "5G");
  dictionary_add(properties, "type", "electric");
  dictionary_add(properties, "num_strings", 6);
  dictionary_add(properties, "top_wood", "mahogany");
  dictionary_add(properties, "back_wood", "mahogany");
  spec = instrument_spec_new();
  spec->properties = *(dictionary_copy(properties));
  dictionary_free(properties);
  in->add_instrument("82765501", 1890.95, spec);
  instrument_spec_free(spec);  

  properties = dictionary_new();
  dictionary_add(properties, "instrument_type", "guitar");
  dictionary_add(properties, "builder", "gibson");
  dictionary_add(properties, "model", "Les Paul");
  dictionary_add(properties, "type", "electric");
  dictionary_add(properties, "num_strings", 6);
  dictionary_add(properties, "top_wood", "maple");
  dictionary_add(properties, "back_wood", "maple");
  spec = instrument_spec_new();
  spec->properties = *(dictionary_copy(properties));
  dictionary_free(properties);
  in->add_instrument("70108276", 52295.95, spec);
  instrument_spec_free(spec);  

  properties = dictionary_new();
  dictionary_add(properties, "instrument_type", "mandolin");
  dictionary_add(properties, "builder", "gibson");
  dictionary_add(properties, "model", "F5-G");
  dictionary_add(properties, "type", "acoustic");
  dictionary_add(properties, "top_wood", "maple");
  dictionary_add(properties, "back_wood", "maple");
  spec = instrument_spec_new();
  spec->properties = *(dictionary_copy(properties));
  dictionary_free(properties);
  in->add_instrument("9019920", 5495.99, spec);
  instrument_spec_free(spec);

  properties = dictionary_new();
  dictionary_add(properties, "instrument_type", "banjo");
  dictionary_add(properties, "builder", "gibson");
  dictionary_add(properties, "model", "RB-3");
  dictionary_add(properties, "type", "acoustic");
  dictionary_add(properties, "num_strings", 5);
  dictionary_add(properties, "back_wood", "maple");
  spec = instrument_spec_new();
  spec->properties = *(dictionary_copy(properties));
  dictionary_free(properties);
  in->add_instrument("8900231", 2945.95, spec);
  instrument_spec_free(spec);  
}
                                 
int main() {
  inventory *i = inventory_new();
  initialize_inventory(i);
  dict *properties = dictionary_new();
  /*  */
  dictionary_free(properties);  
  inventory_free(i);
}