Version bump to 1.4.0-SNAPSHOT.

Rewrite build system to use gradle.
Clean up source for the new generation.

1 files changed, 189 insertions, 0 deletions

diff --git a/src/main/java/org/anarres/cpp/Macro.java b/src/main/java/org/anarres/cpp/Macro.java
new file mode 100644
index 0000000..534cb2b
--- /dev/null
+++ b/src/main/java/org/anarres/cpp/Macro.java
@@ -0,0 +1,189 @@
+/*
+ * Anarres C Preprocessor
+ * Copyright (c) 2007-2008, Shevek
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express
+ * or implied.  See the License for the specific language governing
+ * permissions and limitations under the License.
+ */
+
+package org.anarres.cpp;
+
+import java.util.ArrayList;
+import java.util.Iterator;
+import java.util.List;
+
+/**
+ * A macro object.
+ *
+ * This encapsulates a name, an argument count, and a token stream
+ * for replacement. The replacement token stream may contain the
+ * extra tokens {@link Token#M_ARG} and {@link Token#M_STRING}.
+ */
+public class Macro {
+	private Source			source;
+	private String			name;
+	/* It's an explicit decision to keep these around here. We don't
+	 * need to; the argument token type is M_ARG and the value
+	 * is the index. The strings themselves are only used in
+	 * stringification of the macro, for debugging. */
+	private List<String>	args;
+	private boolean			variadic;
+	private List<Token>		tokens;
+
+	public Macro(Source source, String name) {
+		this.source = source;
+		this.name = name;
+		this.args = null;
+		this.variadic = false;
+		this.tokens = new ArrayList<Token>();
+	}
+
+	public Macro(String name) {
+		this(null, name);
+	}
+
+	/**
+	 * Sets the Source from which this macro was parsed.
+	 */
+	public void setSource(Source s) {
+		this.source = s;
+	}
+
+	/**
+	 * Returns the Source from which this macro was parsed.
+	 *
+	 * This method may return null if the macro was not parsed
+	 * from a regular file.
+	 */
+	public Source getSource() {
+		return source;
+	}
+
+	/**
+	 * Returns the name of this macro.
+	 */
+	public String getName() {
+		return name;
+	}
+
+	/**
+	 * Sets the arguments to this macro.
+	 */
+	public void setArgs(List<String> args) {
+		this.args = args;
+	}
+
+	/**
+	 * Returns true if this is a function-like macro.
+	 */
+	public boolean isFunctionLike() {
+		return args != null;
+	}
+
+	/**
+	 * Returns the number of arguments to this macro.
+	 */
+	public int getArgs() {
+		return args.size();
+	}
+
+	/**
+	 * Sets the variadic flag on this Macro.
+	 */
+	public void setVariadic(boolean b) {
+		this.variadic = b;
+	}
+
+	/**
+	 * Returns true if this is a variadic function-like macro.
+	 */
+	public boolean isVariadic() {
+		return variadic;
+	}
+
+	/**
+	 * Adds a token to the expansion of this macro.
+	 */
+	public void addToken(Token tok) {
+		this.tokens.add(tok);
+	}
+
+	/**
+	 * Adds a "paste" operator to the expansion of this macro.
+	 *
+	 * A paste operator causes the next token added to be pasted
+	 * to the previous token when the macro is expanded.
+	 * It is an error for a macro to end with a paste token.
+	 */
+	public void addPaste(Token tok) {
+		/*
+		 * Given: tok0 ## tok1
+		 * We generate: M_PASTE, tok0, tok1
+		 * This extends as per a stack language:
+		 * tok0 ## tok1 ## tok2 ->
+		 *   M_PASTE, tok0, M_PASTE, tok1, tok2
+		 */
+		this.tokens.add(tokens.size() - 1, tok);
+	}
+
+	/* pp */ List<Token> getTokens() {
+		return tokens;
+	}
+
+	/* Paste tokens are inserted before the first of the two pasted
+	 * tokens, so it's a kind of bytecode notation. This method
+	 * swaps them around again. We know that there will never be two
+	 * sequential paste tokens, so a boolean is sufficient. */
+	public String getText() {
+		StringBuilder	buf = new StringBuilder();
+		boolean			paste = false;
+		for (int i = 0; i < tokens.size(); i++) {
+			Token	tok = tokens.get(i);
+			if (tok.getType() == Token.M_PASTE) {
+				assert paste == false : "Two sequential pastes.";
+				paste = true;
+				continue;
+			}
+			else {
+				buf.append(tok.getText());
+			}
+			if (paste) {
+				buf.append(" #" + "# ");
+				paste = false;
+			}
+			// buf.append(tokens.get(i));
+		}
+		return buf.toString();
+	}
+
+    @Override
+	public String toString() {
+		StringBuilder	buf = new StringBuilder(name);
+		if (args != null) {
+			buf.append('(');
+			Iterator<String>	it = args.iterator();
+			while (it.hasNext()) {
+				buf.append(it.next());
+				if (it.hasNext())
+					buf.append(", ");
+				else if (isVariadic())
+					buf.append("...");
+			}
+			buf.append(')');
+		}
+		if (!tokens.isEmpty()) {
+			buf.append(" => ").append(getText());
+		}
+		return buf.toString();
+	}
+
+}