diff options
author | Shevek <[email protected]> | 2013-12-27 05:49:13 -0800 |
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committer | Shevek <[email protected]> | 2013-12-27 05:49:13 -0800 |
commit | bdc6c852f418c3e042aa41469d84544e5f60a526 (patch) | |
tree | 7866346f0fa48ad46a6a427d016dd4b83451dbbe /src/java/org/anarres/cpp/Source.java | |
parent | 39264fd6d2a6646e49f83b5b2b3512c1663a1c9b (diff) |
Version bump to 1.4.0-SNAPSHOT.
Rewrite build system to use gradle.
Clean up source for the new generation.
Diffstat (limited to 'src/java/org/anarres/cpp/Source.java')
-rw-r--r-- | src/java/org/anarres/cpp/Source.java | 293 |
1 files changed, 0 insertions, 293 deletions
diff --git a/src/java/org/anarres/cpp/Source.java b/src/java/org/anarres/cpp/Source.java deleted file mode 100644 index 5f50a86..0000000 --- a/src/java/org/anarres/cpp/Source.java +++ /dev/null @@ -1,293 +0,0 @@ -/* - * 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.io.BufferedReader; -import java.io.Closeable; -import java.io.File; -import java.io.FileReader; -import java.io.IOException; -import java.io.PushbackReader; -import java.io.Reader; -import java.io.StringReader; - -import java.util.Iterator; -import java.util.List; -import java.util.Set; - -import static org.anarres.cpp.Token.*; - -/** - * An input to the Preprocessor. - * - * Inputs may come from Files, Strings or other sources. The - * preprocessor maintains a stack of Sources. Operations such as - * file inclusion or token pasting will push a new source onto - * the Preprocessor stack. Sources pop from the stack when they - * are exhausted; this may be transparent or explicit. - * - * BUG: Error messages are not handled properly. - */ -public abstract class Source implements Iterable<Token>, Closeable { - private Source parent; - private boolean autopop; - private PreprocessorListener listener; - private boolean active; - private boolean werror; - - /* LineNumberReader */ - -/* - // We can't do this, since we would lose the LexerException - private class Itr implements Iterator { - private Token next = null; - private void advance() { - try { - if (next != null) - next = token(); - } - catch (IOException e) { - throw new UnsupportedOperationException( - "Failed to advance token iterator: " + - e.getMessage() - ); - } - } - public boolean hasNext() { - return next.getType() != EOF; - } - public Token next() { - advance(); - Token t = next; - next = null; - return t; - } - public void remove() { - throw new UnsupportedOperationException( - "Cannot remove tokens from a Source." - ); - } - } -*/ - - public Source() { - this.parent = null; - this.autopop = false; - this.listener = null; - this.active = true; - this.werror = false; - } - - /** - * Sets the parent source of this source. - * - * Sources form a singly linked list. - */ - /* pp */ void setParent(Source parent, boolean autopop) { - this.parent = parent; - this.autopop = autopop; - } - - /** - * Returns the parent source of this source. - * - * Sources form a singly linked list. - */ - /* pp */ final Source getParent() { - return parent; - } - - // @OverrideMustInvoke - /* pp */ void init(Preprocessor pp) { - setListener(pp.getListener()); - this.werror = pp.getWarnings().contains(Warning.ERROR); - } - - /** - * Sets the listener for this Source. - * - * Normally this is set by the Preprocessor when a Source is - * used, but if you are using a Source as a standalone object, - * you may wish to call this. - */ - public void setListener(PreprocessorListener pl) { - this.listener = pl; - } - - /** - * Returns the File currently being lexed. - * - * If this Source is not a {@link FileLexerSource}, then - * it will ask the parent Source, and so forth recursively. - * If no Source on the stack is a FileLexerSource, returns null. - */ - /* pp */ String getPath() { - Source parent = getParent(); - if (parent != null) - return parent.getPath(); - return null; - } - - /** - * Returns the human-readable name of the current Source. - */ - /* pp */ String getName() { - Source parent = getParent(); - if (parent != null) - return parent.getName(); - return null; - } - - /** - * Returns the current line number within this Source. - */ - public int getLine() { - Source parent = getParent(); - if (parent == null) - return 0; - return parent.getLine(); - } - - /** - * Returns the current column number within this Source. - */ - public int getColumn() { - Source parent = getParent(); - if (parent == null) - return 0; - return parent.getColumn(); - } - - /** - * Returns true if this Source is expanding the given macro. - * - * This is used to prevent macro recursion. - */ - /* pp */ boolean isExpanding(Macro m) { - Source parent = getParent(); - if (parent != null) - return parent.isExpanding(m); - return false; - } - - /** - * Returns true if this Source should be transparently popped - * from the input stack. - * - * Examples of such sources are macro expansions. - */ - /* pp */ boolean isAutopop() { - return autopop; - } - - /** - * Returns true if this source has line numbers. - */ - /* pp */ boolean isNumbered() { - return false; - } - - /* This is an incredibly lazy way of disabling warnings when - * the source is not active. */ - /* pp */ void setActive(boolean b) { - this.active = b; - } - - /* pp */ boolean isActive() { - return active; - } - - /** - * Returns the next Token parsed from this input stream. - * - * @see Token - */ - public abstract Token token() - throws IOException, - LexerException; - - /** - * Returns a token iterator for this Source. - */ - public Iterator<Token> iterator() { - return new SourceIterator(this); - } - - /** - * Skips tokens until the end of line. - * - * @param white true if only whitespace is permitted on the - * remainder of the line. - * @return the NL token. - */ - public Token skipline(boolean white) - throws IOException, - LexerException { - for (;;) { - Token tok = token(); - switch (tok.getType()) { - case EOF: - /* There ought to be a newline before EOF. - * At least, in any skipline context. */ - /* XXX Are we sure about this? */ - warning(tok.getLine(), tok.getColumn(), - "No newline before end of file"); - return new Token(NL, - tok.getLine(), tok.getColumn(), - "\n"); - // return tok; - case NL: - /* This may contain one or more newlines. */ - return tok; - case CCOMMENT: - case CPPCOMMENT: - case WHITESPACE: - break; - default: - /* XXX Check white, if required. */ - if (white) - warning(tok.getLine(), tok.getColumn(), - "Unexpected nonwhite token"); - break; - } - } - } - - protected void error(int line, int column, String msg) - throws LexerException { - if (listener != null) - listener.handleError(this, line, column, msg); - else - throw new LexerException("Error at " + line + ":" + column + ": " + msg); - } - - protected void warning(int line, int column, String msg) - throws LexerException { - if (werror) - error(line, column, msg); - else if (listener != null) - listener.handleWarning(this, line, column, msg); - else - throw new LexerException("Warning at " + line + ":" + column + ": " + msg); - } - - public void close() - throws IOException { - } - -} |