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-rw-r--r--src/java/com/sun/gluegen/pcpp/PCPP.java873
1 files changed, 0 insertions, 873 deletions
diff --git a/src/java/com/sun/gluegen/pcpp/PCPP.java b/src/java/com/sun/gluegen/pcpp/PCPP.java
deleted file mode 100644
index d5d9604..0000000
--- a/src/java/com/sun/gluegen/pcpp/PCPP.java
+++ /dev/null
@@ -1,873 +0,0 @@
-/*
- * Copyright (c) 2003 Sun Microsystems, Inc. All Rights Reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions are
- * met:
- *
- * - Redistribution of source code must retain the above copyright
- * notice, this list of conditions and the following disclaimer.
- *
- * - Redistribution in binary form must reproduce the above copyright
- * notice, this list of conditions and the following disclaimer in the
- * documentation and/or other materials provided with the distribution.
- *
- * Neither the name of Sun Microsystems, Inc. or the names of
- * contributors may be used to endorse or promote products derived from
- * this software without specific prior written permission.
- *
- * This software is provided "AS IS," without a warranty of any kind. ALL
- * EXPRESS OR IMPLIED CONDITIONS, REPRESENTATIONS AND WARRANTIES,
- * INCLUDING ANY IMPLIED WARRANTY OF MERCHANTABILITY, FITNESS FOR A
- * PARTICULAR PURPOSE OR NON-INFRINGEMENT, ARE HEREBY EXCLUDED. SUN
- * MICROSYSTEMS, INC. ("SUN") AND ITS LICENSORS SHALL NOT BE LIABLE FOR
- * ANY DAMAGES SUFFERED BY LICENSEE AS A RESULT OF USING, MODIFYING OR
- * DISTRIBUTING THIS SOFTWARE OR ITS DERIVATIVES. IN NO EVENT WILL SUN OR
- * ITS LICENSORS BE LIABLE FOR ANY LOST REVENUE, PROFIT OR DATA, OR FOR
- * DIRECT, INDIRECT, SPECIAL, CONSEQUENTIAL, INCIDENTAL OR PUNITIVE
- * DAMAGES, HOWEVER CAUSED AND REGARDLESS OF THE THEORY OF LIABILITY,
- * ARISING OUT OF THE USE OF OR INABILITY TO USE THIS SOFTWARE, EVEN IF
- * SUN HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGES.
- *
- * You acknowledge that this software is not designed or intended for use
- * in the design, construction, operation or maintenance of any nuclear
- * facility.
- *
- * Sun gratefully acknowledges that this software was originally authored
- * and developed by Kenneth Bradley Russell and Christopher John Kline.
- */
-
-package com.sun.gluegen.pcpp;
-
-import java.io.*;
-import java.util.*;
-
-/** A minimal pseudo-C-preprocessor designed in particular to preserve
- #define statements defining constants so they can be observed by a
- glue code generator. */
-
-public class PCPP {
- private static final boolean disableDebugPrint = true;
-
- public PCPP(List/*<String>*/ includePaths) {
- this.includePaths = includePaths;
- setOut(System.out);
- }
-
- public OutputStream out() { return out; }
- public void setOut(OutputStream out) { this.out = out; writer = new PrintWriter(out); }
-
- public void run(Reader reader, String filename) throws IOException {
- StreamTokenizer tok = null;
- BufferedReader bufReader = null;
- if (reader instanceof BufferedReader) {
- bufReader = (BufferedReader) reader;
- } else {
- bufReader = new BufferedReader(reader);
- }
- tok = new StreamTokenizer(new ConcatenatingReader(bufReader));
- tok.resetSyntax();
- tok.wordChars('a', 'z');
- tok.wordChars('A', 'Z');
- tok.wordChars('0', '9');
- tok.wordChars('_', '_');
- tok.wordChars('.', '.');
- tok.wordChars(128 + 32, 255);
- tok.whitespaceChars(0, ' ');
- tok.quoteChar('"');
- tok.quoteChar('\'');
- tok.eolIsSignificant(true);
- tok.slashSlashComments(true);
- tok.slashStarComments(true);
- ParseState curState = new ParseState(tok, filename);
- ParseState oldState = state;
- state = curState;
- lineDirective();
- parse();
- state = oldState;
- if (state != null) {
- lineDirective();
- }
- }
-
- public static void main(String[] args) {
- try {
- Reader reader = null;
- String filename = null;
-
- if (args.length == 0) {
- usage();
- }
-
- List includePaths = new ArrayList();
- for (int i = 0; i < args.length; i++) {
- if (i < args.length - 1) {
- String arg = args[i];
- if (arg.startsWith("-I")) {
- String[] paths = arg.substring(2).split(System.getProperty("path.separator"));
- for (int j = 0; j < paths.length; j++) {
- includePaths.add(paths[j]);
- }
- } else {
- usage();
- }
- } else {
- String arg = args[i];
- if (arg.equals("-")) {
- reader = new InputStreamReader(System.in);
- filename = "standard input";
- } else {
- if (arg.startsWith("-")) {
- usage();
- }
- filename = arg;
- reader = new BufferedReader(new FileReader(filename));
- }
- }
- }
-
- new PCPP(includePaths).run(reader, filename);
- } catch (IOException e) {
- e.printStackTrace();
- }
- }
-
- public String findFile(String filename) {
- String sep = File.separator;
- for (Iterator iter = includePaths.iterator(); iter.hasNext(); ) {
- String inclPath = (String) iter.next();
- String fullPath = inclPath + sep + filename;
- File file = new File(fullPath);
- if (file.exists()) {
- return fullPath;
- }
- }
- return null;
- }
-
- //----------------------------------------------------------------------
- // Internals only below this point
- //
-
- private static void usage() {
- System.out.println("Usage: java PCPP [filename | -]");
- System.out.println("Minimal pseudo-C-preprocessor.");
- System.out.println("Output goes to standard output. Standard input can be used as input");
- System.out.println("by passing '-' as the argument.");
- System.exit(1);
- }
-
- /** Map containing the results of #define statements. We must
- evaluate certain very simple definitions (to properly handle
- OpenGL's gl.h) but preserve the text of definitions evaluating
- to constants. Macros and multi-line defines (which typically
- contain either macro definitions or expressions) are currently
- not handled. */
- private Map/*<String, String>*/ defineMap = new HashMap();
- private Set/*<String>*/ nonConstantDefines = new HashSet();
-
- /** List containing the #include paths as Strings */
- private List/*<String>*/ includePaths;
-
- // State
- static class ParseState {
- private StreamTokenizer tok;
- private String filename;
- private int lineNumber;
- private boolean startOfLine;
- private boolean startOfFile;
-
- ParseState(StreamTokenizer tok, String filename) {
- this.tok = tok;
- this.filename = filename;
- lineNumber = 1;
- startOfLine = true;
- startOfFile = true;
- }
-
- StreamTokenizer tok() { return tok; }
- String filename() { return filename; }
- int lineNumber() { return tok.lineno(); }
- boolean startOfLine() { return startOfLine; }
- void setStartOfLine(boolean val) { startOfLine = val; }
- boolean startOfFile() { return startOfFile; }
- void setStartOfFile(boolean val) { startOfFile = val; }
- }
-
- private ParseState state;
-
- // Accessors
-
- private void pushBackToken() throws IOException {
- state.tok().pushBack();
- }
-
- /** Equivalent to nextToken(false) */
- private int nextToken() throws IOException {
- return nextToken(false);
- }
-
- private int nextToken(boolean returnEOLs) throws IOException {
- int lineno = lineNumber();
- // Check to see whether the previous call to nextToken() left an
- // EOL on the stream
- if (curToken() == StreamTokenizer.TT_EOL) {
- state.setStartOfLine(true);
- } else if (!state.startOfFile()) {
- state.setStartOfLine(false);
- }
- state.setStartOfFile(false);
- int val = state.tok().nextToken();
- if (!returnEOLs) {
- if (val == StreamTokenizer.TT_EOL) {
- do {
- // Consume and return next token, setting state appropriately
- val = state.tok().nextToken();
- state.setStartOfLine(true);
- println();
- } while (val == StreamTokenizer.TT_EOL);
- }
- }
- if (lineNumber() > lineno + 1) {
- // This is a little noisier than it needs to be, but does handle
- // the case of multi-line comments properly
- lineDirective();
- }
- return val;
- }
-
- /**
- * Reads the next token and throws an IOException if it is not the specified
- * token character.
- */
- private void nextRequiredToken(int requiredToken) throws IOException {
- int nextTok = nextToken();
- if (nextTok != requiredToken) {
- String msg = "Expected token '" + requiredToken + "' but got ";
- switch (nextTok) {
- case StreamTokenizer.TT_EOF: msg += "<EOF>"; break;
- case StreamTokenizer.TT_EOL: msg += "<EOL>"; break;
- default: msg += "'" + curTokenAsString() + "'"; break;
- }
- msg += " at file " + filename() + ", line " + lineNumber();
- throw new IOException(msg);
- }
- }
-
- private int curToken() {
- return state.tok().ttype;
- }
-
- private String curTokenAsString() {
- int t = curToken();
- if (t == StreamTokenizer.TT_WORD) {
- return curWord();
- }
- if (t == StreamTokenizer.TT_EOL) {
- throw new RuntimeException("Should not be converting EOL characters to strings");
- }
- char c = (char) t;
- if (c == '"' || c == '\'') {
- StringBuffer buf = new StringBuffer();
- buf.append(c);
- buf.append(state.tok().sval);
- buf.append(c);
- return buf.toString();
- }
- return new String(new char[] { c });
- }
-
- private String nextWord() throws IOException {
- int val = nextToken();
- if (val != StreamTokenizer.TT_WORD) {
- throw new RuntimeException("Expected word at file " + filename() +
- ", line " + lineNumber());
- }
- return curWord();
- }
-
- private String curWord() {
- return state.tok().sval;
- }
-
- private boolean startOfLine() {
- return state.startOfLine();
- }
-
- private String filename() {
- return state.filename();
- }
-
- private int lineNumber() {
- return state.lineNumber();
- }
-
- /////////////
- // Parsing //
- /////////////
-
- private void parse() throws IOException {
- int tok = 0;
- while ((tok = nextToken()) != StreamTokenizer.TT_EOF) {
- // A '#' at the beginning of a line is a preprocessor directive
- if (startOfLine() && (tok == '#')) {
- preprocessorDirective();
- } else {
- // Output white space plus current token, handling #defines
- // (though not properly -- only handling #defines to constants and the empty string)
- print(" ");
- String s = curTokenAsString();
- String newS = (String) defineMap.get(s);
- if (newS == null) {
- newS = s;
- }
- print(newS);
- }
- }
- flush();
- }
-
- private void preprocessorDirective() throws IOException {
- String w = nextWord();
- boolean shouldPrint = true;
- if (w.equals("define")) {
- handleDefine();
- shouldPrint = false;
- } else if (w.equals("undef")) {
- handleUndefine();
- shouldPrint = false;
- } else if (w.equals("if") || w.equals("elif")) {
- handleIf(w.equals("if"));
- shouldPrint = false;
- } else if (w.equals("ifdef") || w.equals("ifndef")) {
- handleIfdef(w.equals("ifdef"));
- shouldPrint = false;
- } else if (w.equals("else")) {
- handleElse();
- shouldPrint = false;
- } else if (w.equals("endif")) {
- handleEndif();
- shouldPrint = false;
- } else if (w.equals("include")) {
- handleInclude();
- shouldPrint = false;
- } else {
- // Unknown preprocessor directive (#pragma?) -- ignore
- }
- if (shouldPrint) {
- print("# ");
- printToken();
- }
- }
-
- ////////////////////////////////////
- // Handling of #define directives //
- ////////////////////////////////////
-
- private void handleUndefine() throws IOException {
- // Next token is the name of the #undef
- String name = nextWord();
-
- debugPrint(true, "#undef " + name);
-
- // there shouldn't be any extra symbols after the name, but just in case...
- List values = new ArrayList();
- while (nextToken(true) != StreamTokenizer.TT_EOL) {
- values.add(curTokenAsString());
- }
-
- if (enabled()) {
- String oldDef = (String)defineMap.remove(name);
- if (oldDef == null) {
- System.err.println("WARNING: ignoring redundant \"#undef " +
- name + "\", at \"" + filename() + "\" line " + lineNumber() +
- ": \"" + name + "\" was not previously defined");
- } else {
- // System.err.println("UNDEFINED: '" + name + "' (line " + lineNumber() + " file " + filename() + ")");
- }
- nonConstantDefines.remove(name);
- }
- else System.err.println("FAILED TO UNDEFINE: '" + name + "' (line " + lineNumber() + " file " + filename() + ")");
- }
-
- private void handleDefine() throws IOException {
- // Next token is the name of the #define
- String name = nextWord();
- //System.err.println("IN HANDLE_DEFINE: '" + name + "' (line " + lineNumber() + " file " + filename() + ")");
- // (Note that this is not actually proper handling for multi-line #defines)
- List values = new ArrayList();
- while (nextToken(true) != StreamTokenizer.TT_EOL) {
- values.add(curTokenAsString());
- }
- // if we're not within an active block of code (like inside an "#ifdef
- // FOO" where FOO isn't defined), then don't actually alter the definition
- // map.
- debugPrint(true, "#define " + name);
- if (enabled())
- {
- boolean emitDefine = true;
-
- // Handle #definitions to nothing or to a constant value
- int sz = values.size();
- if (sz == 0) {
- // definition to nothing, like "#define FOO"
- String oldDef = (String)defineMap.put(name, "");
- if (oldDef != null) {
- System.err.println("WARNING: \"" + name + "\" redefined from \"" +
- oldDef + "\" to \"\"");
- }
- // We don't want to emit the define, because it would serve no purpose
- // and cause GlueGen errors (confuse the GnuCParser)
- emitDefine = false;
- //System.out.println("//---DEFINED: " + name + "to \"\"");
- } else if (sz == 1) {
- // See whether the value is a constant
- String value = (String) values.get(0);
- if (isConstant(value)) {
- // Value is numeric constant like "#define FOO 5".
- // Put it in the #define map
- String oldDef = (String)defineMap.put(name, value);
- if (oldDef != null) {
- System.err.println("WARNING: \"" + name + "\" redefined from \"" +
- oldDef + "\" to \"" + value + "\"");
- }
- //System.out.println("//---DEFINED: " + name + " to \"" + value + "\"");
- } else {
- // Value is a symbolic constant like "#define FOO BAR".
- // Try to look up the symbol's value
- String newValue = resolveDefine(value, true);
- if (newValue != null) {
- // Set the value to the value of the symbol.
- //
- // TO DO: Is this correct? Why not output the symbol unchanged?
- // I think that it's a good thing to see that some symbols are
- // defined in terms of others. -chris
- values.set(0, newValue);
- }
- else
- {
- // Still perform textual replacement
- defineMap.put(name, value);
- nonConstantDefines.add(name);
- emitDefine = false;
- }
- }
- }
- else
- {
- // Non-constant define; try to do reasonable textual substitution anyway
- // (FIXME: should identify some of these, like (-1), as constants)
- emitDefine = false;
- StringBuffer val = new StringBuffer();
- for (int i = 0; i < sz; i++) {
- if (i != 0) {
- val.append(" ");
- }
- val.append(resolveDefine((String) values.get(i), false));
- }
- if (defineMap.get(name) != null) {
- // This is probably something the user should investigate.
- throw new RuntimeException("Cannot redefine symbol \"" + name +
- " from \"" + defineMap.get(name) + "\" to non-constant " +
- " definition \"" + val.toString() + "\"");
- }
- defineMap.put(name, val.toString());
- nonConstantDefines.add(name);
- }
-
- if (emitDefine)
- {
- // Print name and value
- print("# define ");
- print(name);
- for (Iterator iter = values.iterator(); iter.hasNext(); ) {
- print(" ");
- print((String) iter.next());
- }
- println();
- }
-
- } // end if (enabled())
-
- //System.err.println("OUT HANDLE_DEFINE: " + name);
- }
-
- private boolean isConstant(String s) {
- if (s.startsWith("0x") || s.startsWith("0X")) {
- return checkHex(s);
- } else {
- return checkDecimal(s);
- }
- }
-
- private boolean checkHex(String s) {
- for (int i = 2; i < s.length(); i++) {
- char c = s.charAt(i);
- if (!((c >= '0' && c <= '9') ||
- (c >= 'a' && c <= 'f') ||
- (c >= 'A' && c <= 'F'))) {
- return false;
- }
- }
- return true;
- }
-
- private boolean checkDecimal(String s) {
- try {
- Float.valueOf(s);
- }
- catch (NumberFormatException e) {
- // not parsable as a number
- return false;
- }
- return true;
- }
-
- private String resolveDefine(String word, boolean returnNullIfNotFound) {
- String lastWord = (String) defineMap.get(word);
- if (lastWord == null) {
- if (returnNullIfNotFound) {
- return null;
- }
- return word;
- }
- String nextWord = null;
- do {
- nextWord = (String) defineMap.get(lastWord);
- if (nextWord != null) {
- lastWord = nextWord;
- }
- } while (nextWord != null);
- return lastWord;
- }
-
- ////////////////////////////////////////////////
- // Handling of #if/#ifdef/ifndef/endif directives //
- ////////////////////////////////////////////////
-
- /**
- * @param isIfdef if true, we're processing #ifdef; if false, we're
- * processing #ifndef.
- */
- private void handleIfdef(boolean isIfdef) throws IOException {
- // Next token is the name of the #ifdef
- String symbolName = nextWord();
- debugPrint(true, (isIfdef ? "#ifdef " : "#ifndef ") + symbolName);
- boolean symbolIsDefined = defineMap.get(symbolName) != null;
- //debugPrint(true, "HANDLE_IFDEF: ifdef(" + symbolName + ") = " + symbolIsDefined );
- pushEnableBit(enabled() && symbolIsDefined == isIfdef);
- }
-
- /** Handles #else directives */
- private void handleElse() throws IOException {
- boolean enabledStatusBeforeElse = enabled();
- popEnableBit();
- pushEnableBit(enabled() && !enabledStatusBeforeElse);
- debugPrint(true, "#else ");
- }
-
- private void handleEndif() {
- boolean enabledBeforePopping = enabled();
- popEnableBit();
-
- // print the endif if we were enabled prior to popEnableBit() (sending
- // false to debugPrint means "print regardless of current enabled() state).
- debugPrint(!enabledBeforePopping, "#endif/end-else");
- }
-
- /**
- * @param isIf if true, we're processing #if; if false, we're
- * processing #elif.
- */
- private void handleIf(boolean isIf) throws IOException {
- //System.out.println("IN HANDLE_" + (isIf ? "IF" : "ELIF") + " file \"" + filename() + " line " + lineNumber());
- debugPrint(true, (isIf ? "#if" : "#elif"));
- boolean defineEvaluatedToTrue = handleIfRecursive(true);
- if (!isIf) {
- popEnableBit();
- }
- pushEnableBit(enabled() && defineEvaluatedToTrue == isIf);
- //System.out.println("OUT HANDLE_" + (isIf ? "IF" : "ELIF") +" (evaluated to " + defineEvaluatedToTrue + ")");
- }
-
- //static int tmp = -1;
-
- /**
- * This method is called recursively to process nested sub-expressions such as:
- * <pre>
- * #if !defined(OPENSTEP) && !(defined(NeXT) || !defined(NeXT_PDO))
- *</pre>
- *
- * @param greedy if true, continue evaluating sub-expressions until EOL is
- * reached. If false, return as soon as the first sub-expression is
- * processed.
- * @return the value of the sub-expression or (if greedy==true)
- * series of sub-expressions.
- */
- private boolean handleIfRecursive(boolean greedy) throws IOException {
- //System.out.println("IN HANDLE_IF_RECURSIVE (" + ++tmp + ", greedy = " + greedy + ")"); System.out.flush();
-
- // ifValue keeps track of the current value of the potentially nested
- // "defined()" expressions as we process them.
- boolean ifValue = true;
- int openParens = 0;
- int tok;
- do {
- tok = nextToken(true);
- //System.out.println("-- READ: [" + (tok == StreamTokenizer.TT_EOL ? "<EOL>" :curTokenAsString()) + "]");
- switch (tok) {
- case '(':
- ++openParens;
- //System.out.println("OPEN PARENS = " + openParens);
- ifValue = ifValue && handleIfRecursive(true);
- break;
- case ')':
- --openParens;
- //System.out.println("OPEN PARENS = " + openParens);
- break;
- case '!':
- {
- //System.out.println("HANDLE_IF_RECURSIVE HANDLING !");
- boolean rhs = handleIfRecursive(false);
- ifValue = !rhs;
- //System.out.println("HANDLE_IF_RECURSIVE HANDLED OUT !, RHS = " + rhs);
- }
- break;
- case '&':
- {
- nextRequiredToken('&');
- //System.out.println("HANDLE_IF_RECURSIVE HANDLING &&, LHS = " + ifValue);
- boolean rhs = handleIfRecursive(true);
- //System.out.println("HANDLE_IF_RECURSIVE HANDLED &&, RHS = " + rhs);
- ifValue = ifValue && rhs;
- }
- break;
- case '|':
- {
- nextRequiredToken('|');
- //System.out.println("HANDLE_IF_RECURSIVE HANDLING ||, LHS = " + ifValue);
- boolean rhs = handleIfRecursive(true);
- //System.out.println("HANDLE_IF_RECURSIVE HANDLED ||, RHS = " + rhs);
- ifValue = ifValue || rhs;
- }
- break;
- case '>':
- {
- // NOTE: we don't handle expressions like this properly
- boolean rhs = handleIfRecursive(true);
- ifValue = false;
- }
- break;
- case '<':
- {
- // NOTE: we don't handle expressions like this properly
- boolean rhs = handleIfRecursive(true);
- ifValue = false;
- }
- break;
- case '=':
- {
- // NOTE: we don't handle expressions like this properly
- boolean rhs = handleIfRecursive(true);
- ifValue = false;
- }
- break;
- case StreamTokenizer.TT_WORD:
- {
- String word = curTokenAsString();
- if (word.equals("defined")) {
- // Handle things like #if defined(SOMESYMBOL)
- nextRequiredToken('(');
- String symbol = nextWord();
- boolean isDefined = defineMap.get(symbol) != null;
- //System.out.println("HANDLE_IF_RECURSIVE HANDLING defined(" + symbol + ") = " + isDefined);
- ifValue = ifValue && isDefined;
- nextRequiredToken(')');
- }
- else {
- // Handle things like #if SOME_SYMBOL.
- String symbolValue = (String)defineMap.get(word);
-
- // See if the statement is "true"; i.e., a non-zero expression
- if (symbolValue != null) {
- // The statement is true if the symbol is defined and is a constant expression
- return (!nonConstantDefines.contains(word));
- } else {
- // The statement is true if the symbol evaluates to a non-zero value
- //
- // NOTE: This doesn't yet handle evaluable expressions like "#if
- // SOME_SYMBOL > 5" or "#if SOME_SYMBOL == 0", both of which are
- // valid syntax. It only handles numeric symbols like "#if 1"
-
- try {
- // see if it's in decimal form
- return Double.parseDouble(word) != 0;
- }
- catch (NumberFormatException nfe1) {
- try {
- // ok, it's not a valid decimal value, try hex/octal value
- return Long.parseLong(word) != 0;
- }
- catch (NumberFormatException nfe2) {
- try {
- // ok, it's not a valid hex/octal value, try boolean
- return Boolean.valueOf(word) == Boolean.TRUE;
- }
- catch (NumberFormatException nfe3) {
- // give up; the symbol isn't a numeric or boolean value
- return false;
- }
- }
- }
- }
- }
- } // end case TT_WORD
- break;
- case StreamTokenizer.TT_EOL:
- //System.out.println("HANDLE_IF_RECURSIVE HIT <EOL>!");
- pushBackToken(); // so caller hits EOL as well if we're recursing
- break;
- case StreamTokenizer.TT_EOF:
- throw new RuntimeException("Unexpected end of file while parsing " +
- "#if statement at file " + filename() + ", line " + lineNumber());
-
- default:
- throw new RuntimeException("Unexpected token (" + curTokenAsString() +
- ") while parsing " + "#if statement at file " + filename() +
- ", line " + lineNumber());
- }
- //System.out.println("END OF WHILE: greedy = " + greedy + " parens = " +openParens + " not EOL = " + (tok != StreamTokenizer.TT_EOL) + " --> " + ((greedy && openParens >= 0) && tok != StreamTokenizer.TT_EOL));
- } while ((greedy && openParens >= 0) && tok != StreamTokenizer.TT_EOL);
- //System.out.println("OUT HANDLE_IF_RECURSIVE (" + tmp-- + ", returning " + ifValue + ")");
- //System.out.flush();
- return ifValue;
- }
-
- /////////////////////////////////////
- // Handling of #include directives //
- /////////////////////////////////////
-
- private void handleInclude() throws IOException {
- // Two kinds of #includes: one with quoted string for argument,
- // one with angle brackets surrounding argument
- int t = nextToken();
- String filename = null;
- if (t == '"') {
- filename = curWord();
- } else if (t == '<') {
- // Components of path name are coming in as separate tokens;
- // concatenate them
- StringBuffer buf = new StringBuffer();
- while ((t = nextToken()) != '>' && (t != StreamTokenizer.TT_EOF)) {
- buf.append(curTokenAsString());
- }
- if (t == StreamTokenizer.TT_EOF) {
- System.err.println("WARNING: unexpected EOF while processing #include directive");
- }
- filename = buf.toString();
- }
- // if we're not within an active block of code (like inside an "#ifdef
- // FOO" where FOO isn't defined), then don't actually process the
- // #included file.
- debugPrint(true, "#include [" + filename + "]");
- if (enabled())
- {
- // Look up file in known #include path
- String fullname = findFile(filename);
- //System.out.println("ACTIVE BLOCK, LOADING " + filename);
- if (fullname == null) {
- System.err.println("WARNING: unable to find #include file \"" + filename + "\"");
- return;
- }
- // Process this file in-line
- Reader reader = new BufferedReader(new FileReader(fullname));
- run(reader, fullname);
- }
- else
- {
- //System.out.println("INACTIVE BLOCK, SKIPPING " + filename);
- }
- }
-
- ////////////
- // Output //
- ////////////
-
- private OutputStream out;
- private PrintWriter writer;
- private ArrayList enabledBits = new ArrayList();
-
- private static int debugPrintIndentLevel = 0;
- private void debugPrint(boolean onlyPrintIfEnabled, String msg)
- {
- if (disableDebugPrint) {
- return;
- }
-
- if (!onlyPrintIfEnabled || (onlyPrintIfEnabled && enabled()))
- {
- for (int i = debugPrintIndentLevel; --i >0; ) {
- System.out.print(" ");
- }
- System.out.println(msg + " (line " + lineNumber() + " file " + filename() + ")");
- }
- }
-
- private void pushEnableBit(boolean enabled) {
- enabledBits.add(new Boolean(enabled));
- ++debugPrintIndentLevel;
- //debugPrint(false, "PUSH_ENABLED, NOW: " + enabled());
- }
-
- private void popEnableBit() {
- if (enabledBits.size() == 0) {
- System.err.println("WARNING: mismatched #ifdef/endif pairs");
- return;
- }
- enabledBits.remove(enabledBits.size() - 1);
- --debugPrintIndentLevel;
- //debugPrint(false, "POP_ENABLED, NOW: " + enabled());
- }
-
- private boolean enabled() {
- return (enabledBits.size() == 0 ||
- ((Boolean) enabledBits.get(enabledBits.size() - 1)).booleanValue());
- }
-
- private void print(String s) {
- if (enabled()) {
- writer.print(s);
- //System.out.print(s);//debug
- }
- }
-
- private void print(char c) {
- if (enabled()) {
- writer.print(c);
- //System.err.print(c); //debug
- }
- }
-
- private void println() {
- if (enabled()) {
- writer.println();
- //System.err.println();//debug
- }
- }
-
- private void printToken() {
- print(curTokenAsString());
- }
-
- private void flush() {
- if (enabled()) {
- writer.flush();
- //System.err.flush(); //debug
- }
- }
-
- private void lineDirective() {
- print("# " + lineNumber() + " \"" + filename() + "\"");
- println();
- }
-}
generated by cgit v1.2.3 (git 2.39.1) at 2024-11-29 22:54:41 +0000