Create array caches for variable map's keys and values

Author	DaveJarvis <email>
Date	2022-11-26 17:28:37 GMT-0800
Commit	1eb19f210b20e404b1b9b3ad40aba3b9252071a3
Parent	e1e6386
Delta	20 lines added, 15 lines removed, 5-line increase

src/main/java/com/keenwrite/sigils/RKeyOperator.java

		private static final char KEY_SEPARATOR_R = '$';

		+ private final StringBuilder mVarName = new StringBuilder( 128 );
		+
		/**
		* Constructs a new instance capable of converting dot-separated variable
		* names into R's dollar-symbol-separated names.
		*/
		- public RKeyOperator() {}
		+ public RKeyOperator() { }

		/**

		assert !key.isBlank();

		- final var rVarName = new StringBuilder( key.length() + 3 );
		- rVarName.append( "v" );
		- rVarName.append( KEY_SEPARATOR_R );
		- rVarName.append( key );
		+ mVarName.setLength( 0 );
		+
		+ //final var rVarName = new StringBuilder( key.length() + 3 );
		+ mVarName.append( "v" );
		+ mVarName.append( KEY_SEPARATOR_R );
		+ mVarName.append( key );

		// The 3 is for v$ + first char, which cannot be a separator.
		- for( int i = rVarName.length() - 1; i >= 3; i-- ) {
		- if( rVarName.charAt( i ) == KEY_SEPARATOR_DEF ) {
		- rVarName.setCharAt( i, KEY_SEPARATOR_R );
		+ for( int i = mVarName.length() - 1; i >= 3; i-- ) {
		+ if( mVarName.charAt( i ) == KEY_SEPARATOR_DEF ) {
		+ mVarName.setCharAt( i, KEY_SEPARATOR_R );
		}
		}

		- return rVarName.toString();
		+ return mVarName.toString();
		}
		}

src/main/java/com/keenwrite/processors/text/AhoCorasickReplacer.java

		* Default (empty) constructor.
		*/
		- protected AhoCorasickReplacer() {
		- }
		+ protected AhoCorasickReplacer() { }

		@Override
		public String replace( final String text, final Map<String, String> map ) {
		// Create a buffer sufficiently large that re-allocations are minimized.
		- final var sb = new StringBuilder( (int)(text.length() * 1.25) );
		+ final var sb = new StringBuilder( (int) (text.length() * 1.25) );

		// Definition names cannot overlap.

src/main/java/com/keenwrite/processors/text/StringUtilsReplacer.java

		package com.keenwrite.processors.text;

		+import org.apache.commons.lang3.StringUtils;
		+
		import java.util.Map;

		import static org.apache.commons.lang3.StringUtils.replaceEach;

		/**
		- * Replaces text using Apache's StringUtils.replaceEach method.
		+ * Replaces text using a brute-force
		+ * {@link StringUtils#replaceEach(String, String[], String[])}} method.
		*/
		public class StringUtilsReplacer extends AbstractTextReplacer {

		/**
		* Default (empty) constructor.
		*/
		- protected StringUtilsReplacer() {
		- }
		+ protected StringUtilsReplacer() { }

		@Override