From 44f419264898f84fe5536f3ea159c18b381e6083 Mon Sep 17 00:00:00 2001
From: Adrian Kummerlaender
Date: Sun, 16 Apr 2017 13:17:22 +0200
Subject: Extract variable management, move into `state` package

---
 source/base/definition.d | 84 ------------------------------------------------
 source/base/stack.d      | 48 ---------------------------
 2 files changed, 132 deletions(-)
 delete mode 100644 source/base/definition.d
 delete mode 100644 source/base/stack.d

(limited to 'source/base')

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 == "§" ) {
-			definition = DList!Token();
-			return true;
-		} else {
-			return false;
-		}
-	} else {
-		if ( word == ";" ) {
-			register(definition);
-			definition.nullify;
-		} else {
-			definition.insertBack(Token(word));
-		}
-
-		return true;
-	}
-}
-
-}
diff --git a/source/base/stack.d b/source/base/stack.d
deleted file mode 100644
index c6e1a59..0000000
--- a/source/base/stack.d
+++ /dev/null
@@ -1,48 +0,0 @@
-module base.stack;
-
-import std.conv;
-import std.string;
-import std.variant;
-import std.container : SList;
-
-alias Token = Algebraic!(int, bool, string);
-alias Stack = SList;
-
-Stack!Token stack;
-
-Token toToken(string value) {
-	if ( value.isNumeric ) {
-		return Token(parse!int(value));
-	} else {
-		return Token(value);
-	}
-}
-
-Token top(ref Stack!Token stack) {
-	if ( stack.empty ) {
-		throw new Exception("stack is empty");
-	} else {
-		return stack.front;
-	}
-}
-
-Token pop(ref Stack!Token stack) {
-	Token token = stack.top;
-	stack.removeFront;
-	return token;
-}
-
-template push(T)
-if ( is(T == int) || is(T == bool) || is (T == string) ) {
-	void push(ref Stack!Token stack, T value) {
-		stack.push(Token(value));
-	}
-}
-
-void push(ref Stack!Token stack, Token token) {
-	stack.insertFront(token);
-}
-
-void push(ref Stack!Token stack, Stack!Token prefix) {
-	stack.insertFront(prefix[]);
-}
-- 
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