From ed9b5cdfc648e86fd463bfa8d86b94c41671e14c Mon Sep 17 00:00:00 2001
From: jeff
Date: Sun, 8 Feb 2015 21:29:25 -0500
Subject: switch all classes to new signature/type system

---
 src/cuchaz/enigma/mapping/NameValidator.java | 80 ++++++++++++++++++++++++++++
 1 file changed, 80 insertions(+)
 create mode 100644 src/cuchaz/enigma/mapping/NameValidator.java

(limited to 'src/cuchaz/enigma/mapping/NameValidator.java')

diff --git a/src/cuchaz/enigma/mapping/NameValidator.java b/src/cuchaz/enigma/mapping/NameValidator.java
new file mode 100644
index 0000000..35a17f9
--- /dev/null
+++ b/src/cuchaz/enigma/mapping/NameValidator.java
@@ -0,0 +1,80 @@
+/*******************************************************************************
+ * Copyright (c) 2014 Jeff Martin.
+ * All rights reserved. This program and the accompanying materials
+ * are made available under the terms of the GNU Public License v3.0
+ * which accompanies this distribution, and is available at
+ * http://www.gnu.org/licenses/gpl.html
+ * 
+ * Contributors:
+ *     Jeff Martin - initial API and implementation
+ ******************************************************************************/
+package cuchaz.enigma.mapping;
+
+import java.util.Arrays;
+import java.util.List;
+import java.util.regex.Pattern;
+
+import javassist.bytecode.Descriptor;
+
+public class NameValidator {
+	
+	private static final Pattern IdentifierPattern;
+	private static final Pattern ClassPattern;
+	private static final List<String> ReservedWords = Arrays.asList(
+		"abstract", "continue", "for", "new", "switch", "assert", "default", "goto", "package", "synchronized",
+		"boolean", "do", "if", "private", "this", "break", "double", "implements", "protected", "throw", "byte",
+		"else", "import", "public", "throws", "case", "enum", "instanceof", "return", "transient", "catch",
+		"extends", "int", "short", "try", "char", "final", "interface", "static", "void", "class", "finally",
+		"long", "strictfp", "volatile", "const", "float", "native", "super", "while"
+	);
+	
+	static {
+		
+		// java allows all kinds of weird characters...
+		StringBuilder startChars = new StringBuilder();
+		StringBuilder partChars = new StringBuilder();
+		for (int i = Character.MIN_CODE_POINT; i <= Character.MAX_CODE_POINT; i++) {
+			if (Character.isJavaIdentifierStart(i)) {
+				startChars.appendCodePoint(i);
+			}
+			if (Character.isJavaIdentifierPart(i)) {
+				partChars.appendCodePoint(i);
+			}
+		}
+		
+		String identifierRegex = "[A-Za-z_<][A-Za-z0-9_>]*";
+		IdentifierPattern = Pattern.compile(identifierRegex);
+		ClassPattern = Pattern.compile(String.format("^(%s(\\.|/))*(%s)$", identifierRegex, identifierRegex));
+	}
+	
+	public static String validateClassName(String name, boolean packageRequired) {
+		if (name == null) {
+			return null;
+		}
+		if (!ClassPattern.matcher(name).matches() || ReservedWords.contains(name)) {
+			throw new IllegalNameException(name, "This doesn't look like a legal class name");
+		}
+		if (packageRequired && new ClassEntry(name).getPackageName() == null) {
+			throw new IllegalNameException(name, "Class must be in a package");
+		}
+		return Descriptor.toJvmName(name);
+	}
+	
+	public static String validateFieldName(String name) {
+		if (name == null) {
+			return null;
+		}
+		if (!IdentifierPattern.matcher(name).matches() || ReservedWords.contains(name)) {
+			throw new IllegalNameException(name, "This doesn't look like a legal identifier");
+		}
+		return name;
+	}
+	
+	public static String validateMethodName(String name) {
+		return validateFieldName(name);
+	}
+	
+	public static String validateArgumentName(String name) {
+		return validateFieldName(name);
+	}
+}
-- 
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