diff options
Diffstat (limited to 'source/base/definition.d')
-rw-r--r-- | source/base/definition.d | 84 |
1 files changed, 0 insertions, 84 deletions
diff --git a/source/base/definition.d b/source/base/definition.d deleted file mode 100644 index d37ad20..0000000 --- a/source/base/definition.d +++ /dev/null @@ -1,84 +0,0 @@ -module base.definition; - -import std.string; -import std.variant; -import std.typecons; - -import std.container : DList; - -import base.stack; - -alias Words = Stack!Token[string]; - -Words words; - -bool handle(Token token) { - return token.visit!( - (int value) => handle(value), - (bool value) => handle(value), - (string word ) => handle(word) - ); -} - -Stack!Token get(string word) { - if ( word in words ) { - return words[word].dup; - } else { - return Stack!Token(Token(word)); - } -} - -private { - -Nullable!(DList!Token) definition; - -void register(DList!Token definition) { - string wordToBeDefined; - - definition.front.visit!( - (int value) => wordToBeDefined = "", - (bool value) => wordToBeDefined = "", - (string name ) => wordToBeDefined = name - ); - - if ( wordToBeDefined == "" ) { - throw new Exception("words may not be numeric or boolean"); - } - - definition.removeFront; - words[wordToBeDefined] = Stack!Token(definition[]); -} - -template handle(T) -if ( is(T == int) || is(T == bool) ) { - bool handle(T value) { - if ( definition.isNull ) { - return false; - } else { - definition.insertBack(Token(value)); - return true; - } - } -} - -bool handle(string word) { - if ( definition.isNull ) { - if ( word == "ยง" ) { - definition = DList!Token(); - return true; - } else { - return false; - } - } else { - if ( word == ";" ) { - register(definition); - definition.nullify; - } else { - definition.insertBack(Token(word)); - } - - return true; - } -} - -} |