Separate general I/O from parsing.

1 files changed, 0 insertions, 215 deletions

diff --git a/BJC-Utils2/src/main/java/bjc/utils/parserutils/RuleBasedConfigReader.java b/BJC-Utils2/src/main/java/bjc/utils/parserutils/RuleBasedConfigReader.java
deleted file mode 100644
index b26030c..0000000
--- a/BJC-Utils2/src/main/java/bjc/utils/parserutils/RuleBasedConfigReader.java
+++ /dev/null
@@ -1,215 +0,0 @@
-package bjc.utils.parserutils;
-
-import bjc.utils.data.IHolder;
-import bjc.utils.data.IPair;
-import bjc.utils.data.Identity;
-import bjc.utils.data.Pair;
-import bjc.utils.exceptions.UnknownPragmaException;
-import bjc.utils.funcdata.FunctionalMap;
-import bjc.utils.funcdata.FunctionalStringTokenizer;
-import bjc.utils.funcdata.IMap;
-
-import java.io.InputStream;
-import java.util.InputMismatchException;
-import java.util.Scanner;
-import java.util.function.BiConsumer;
-import java.util.function.Consumer;
-
-/**
- * This class parses a rules based config file, and uses it to drive a provided
- * set of actions
- *
- * @author ben
- *
- * @param <E>
- *                The type of the state object to use
- *
- */
-public class RuleBasedConfigReader<E> {
-	// Function to execute when starting a rule
-	// Takes the tokenizer, and a pair of the read token and application
-	// state
-	private BiConsumer<FunctionalStringTokenizer, IPair<String, E>> start;
-
-	// Function to use when continuing a rule
-	// Takes a tokenizer and application state
-	private BiConsumer<FunctionalStringTokenizer, E> continueRule;
-
-	// Function to use when ending a rule
-	// Takes an application state
-	private Consumer<E> end;
-
-	// Map of pragma names to pragma actions
-	// Pragma actions are functions taking a tokenizer and application state
-	private IMap<String, BiConsumer<FunctionalStringTokenizer, E>> pragmas;
-
-	/**
-	 * Create a new rule-based config reader
-	 *
-	 * @param start
-	 *                The action to fire when starting a rule
-	 * @param continueRule
-	 *                The action to fire when continuing a rule
-	 * @param end
-	 *                The action to fire when ending a rule
-	 */
-	public RuleBasedConfigReader(BiConsumer<FunctionalStringTokenizer, IPair<String, E>> start,
-			BiConsumer<FunctionalStringTokenizer, E> continueRule, Consumer<E> end) {
-		this.start = start;
-		this.continueRule = continueRule;
-		this.end = end;
-
-		this.pragmas = new FunctionalMap<>();
-	}
-
-	/**
-	 * Add a pragma to this reader
-	 *
-	 * @param name
-	 *                The name of the pragma to add
-	 * @param action
-	 *                The function to execute when this pragma is read
-	 */
-	public void addPragma(String name, BiConsumer<FunctionalStringTokenizer, E> action) {
-		if(name == null)
-			throw new NullPointerException("Pragma name must not be null");
-		else if(action == null) throw new NullPointerException("Pragma action must not be null");
-
-		pragmas.put(name, action);
-	}
-
-	private void continueRule(E state, boolean isRuleOpen, String line) {
-		// Make sure our input is correct
-		if(isRuleOpen == false)
-			throw new InputMismatchException("Cannot continue rule with no rule open");
-		else if(continueRule == null)
-			throw new InputMismatchException("Rule continuation not supported for current grammar");
-
-		// Accept the rule
-		continueRule.accept(new FunctionalStringTokenizer(line.substring(1), " "), state);
-	}
-
-	private boolean endRule(E state, boolean isRuleOpen) {
-		// Ignore blank line without an open rule
-		if(isRuleOpen == false)
-			// Do nothing
-			return false;
-		else {
-			// Nothing happens on rule end
-			if(end != null) {
-				// Process the rule ending
-				end.accept(state);
-			}
-
-			// Return a closed rule
-			return false;
-		}
-	}
-
-	/**
-	 * Run a stream through this reader
-	 *
-	 * @param input
-	 *                The stream to get input
-	 * @param initialState
-	 *                The initial state of the reader
-	 * @return The final state of the reader
-	 */
-	public E fromStream(InputStream input, E initialState) {
-		if(input == null) throw new NullPointerException("Input stream must not be null");
-
-		// Application state: We're giving this back later
-		E state = initialState;
-
-		// Prepare our input source
-		try(Scanner source = new Scanner(input)) {
-			source.useDelimiter("\n");
-			// This is true when a rule's open
-			IHolder<Boolean> isRuleOpen = new Identity<>(false);
-
-			// Do something for every line of the file
-			source.forEachRemaining((line) -> {
-				// Skip comment lines
-				if(line.startsWith("#") || line.startsWith("//"))
-					// It's a comment
-					return;
-				else if(line.equals("")) {
-					// End the rule
-					isRuleOpen.replace(endRule(state, isRuleOpen.getValue()));
-				} else if(line.startsWith("\t")) {
-					// Continue the rule
-					continueRule(state, isRuleOpen.getValue(), line);
-				} else {
-					// Open a rule
-					isRuleOpen.replace(startRule(state, isRuleOpen.getValue(), line));
-				}
-			});
-		}
-
-		// Return the state that the user has created
-		return state;
-
-	}
-
-	/**
-	 * Set the action to execute when continuing a rule
-	 *
-	 * @param continueRule
-	 *                The action to execute on continuation of a rule
-	 */
-	public void setContinueRule(BiConsumer<FunctionalStringTokenizer, E> continueRule) {
-		this.continueRule = continueRule;
-	}
-
-	/**
-	 * Set the action to execute when ending a rule
-	 *
-	 * @param end
-	 *                The action to execute on ending of a rule
-	 */
-	public void setEndRule(Consumer<E> end) {
-		this.end = end;
-	}
-
-	/**
-	 * Set the action to execute when starting a rule
-	 *
-	 * @param start
-	 *                The action to execute on starting of a rule
-	 */
-	public void setStartRule(BiConsumer<FunctionalStringTokenizer, IPair<String, E>> start) {
-		if(start == null) throw new NullPointerException("Action on rule start must be non-null");
-
-		this.start = start;
-	}
-
-	private boolean startRule(E state, boolean isRuleOpen, String line) {
-		// Create the line tokenizer
-		FunctionalStringTokenizer tokenizer = new FunctionalStringTokenizer(line, " ");
-
-		// Get the initial token
-		String nextToken = tokenizer.nextToken();
-
-		// Handle pragmas
-		if(nextToken.equals("pragma")) {
-			// Get the pragma name
-			String token = tokenizer.nextToken();
-
-			// Handle pragmas
-			pragmas.getOrDefault(token, (tokenzer, stat) -> {
-				throw new UnknownPragmaException("Unknown pragma " + token);
-			}).accept(tokenizer, state);
-		} else {
-			// Make sure input is correct
-			if(isRuleOpen == true)
-				throw new InputMismatchException("Nested rules are currently not supported");
-
-			// Start a rule
-			start.accept(tokenizer, new Pair<>(nextToken, state));
-
-			isRuleOpen = true;
-		}
-
-		return isRuleOpen;
-	}
-}