mirror of
https://github.com/mozilla/gecko-dev.git
synced 2024-11-06 00:55:37 +00:00
1a4b241ed2
unix now has an autoconf based make system. currently the new make system only makes parser related files, back end stuff to be added soon. mac and windows makesystems will be checked in next. parser.cpp has been factored into token.*, lexer.*, and parser.* utilities.cpp has been factored into formatter.*, exception.*, mem.*, strings.*,ds.h, stlcfg.h, and algo.h
148 lines
4.6 KiB
C++
148 lines
4.6 KiB
C++
/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*-
|
|
*
|
|
* The contents of this file are subject to the Netscape Public
|
|
* License Version 1.1 (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.mozilla.org/NPL/
|
|
*
|
|
* Software distributed under the License is distributed on an "AS
|
|
* IS" basis, WITHOUT WARRANTY OF ANY KIND, either express oqr
|
|
* implied. See the License for the specific language governing
|
|
* rights and limitations under the License.
|
|
*
|
|
* The Original Code is the JavaScript 2 Prototype.
|
|
*
|
|
* The Initial Developer of the Original Code is Netscape
|
|
* Communications Corporation. Portions created by Netscape are
|
|
* Copyright (C) 1998 Netscape Communications Corporation. All
|
|
* Rights Reserved.
|
|
*
|
|
* Contributor(s):
|
|
*
|
|
* Alternatively, the contents of this file may be used under the
|
|
* terms of the GNU Public License (the "GPL"), in which case the
|
|
* provisions of the GPL are applicable instead of those above.
|
|
* If you wish to allow use of your version of this file only
|
|
* under the terms of the GPL and not to allow others to use your
|
|
* version of this file under the NPL, indicate your decision by
|
|
* deleting the provisions above and replace them with the notice
|
|
* and other provisions required by the GPL. If you do not delete
|
|
* the provisions above, a recipient may use your version of this
|
|
* file under either the NPL or the GPL.
|
|
*/
|
|
|
|
#include <assert.h>
|
|
#include "world.h"
|
|
#include "parser.h"
|
|
#include "reader.h"
|
|
|
|
using namespace JavaScript;
|
|
|
|
World world;
|
|
const bool showTokens = false;
|
|
const String consoleName = widenCString("<console>");
|
|
|
|
#if defined(XP_MAC) && !defined(XP_MAC_MPW)
|
|
#include <SIOUX.h>
|
|
#include <MacTypes.h>
|
|
|
|
static char *mac_argv[] = {"js2", 0};
|
|
|
|
static void initConsole(StringPtr consoleName, const char* startupMessage,
|
|
int &argc, char **&argv)
|
|
{
|
|
SIOUXSettings.autocloseonquit = false;
|
|
SIOUXSettings.asktosaveonclose = false;
|
|
SIOUXSetTitle(consoleName);
|
|
|
|
// Set up a buffer for stderr (otherwise it's a pig).
|
|
static char buffer[BUFSIZ];
|
|
setvbuf(stderr, buffer, _IOLBF, BUFSIZ);
|
|
|
|
JavaScript::stdOut << startupMessage;
|
|
|
|
argc = 1;
|
|
argv = mac_argv;
|
|
}
|
|
#endif
|
|
|
|
// Interactively read a line from the input stream in and put it into
|
|
// s. Return false if reached the end of input before reading anything.
|
|
static bool promptLine(LineReader &inReader, string &s, const char *prompt)
|
|
{
|
|
#if !defined XP_MAC_MPW
|
|
if (prompt)
|
|
stdOut << prompt;
|
|
#endif
|
|
return inReader.readLine(s) != 0;
|
|
}
|
|
|
|
static void readEvalPrint(FILE *in, World &world)
|
|
{
|
|
String buffer;
|
|
string line;
|
|
LineReader inReader(in);
|
|
|
|
while (promptLine(inReader, line, buffer.empty() ? "js parser> " : "> ")) {
|
|
appendChars(buffer, line.data(), line.size());
|
|
try {
|
|
Arena a;
|
|
Parser p(world, a, buffer, consoleName);
|
|
|
|
if (showTokens) {
|
|
Lexer &l = p.lexer;
|
|
while (true) {
|
|
const Token &t = l.get(true);
|
|
if (t.hasKind(Token::end))
|
|
break;
|
|
stdOut << ' ';
|
|
t.print(stdOut, true);
|
|
}
|
|
stdOut << '\n';
|
|
} else {
|
|
StmtNode *parsedStatements = p.parseProgram();
|
|
ASSERT(p.lexer.peek(true).hasKind(Token::end));
|
|
{
|
|
PrettyPrinter f(stdOut, 30);
|
|
{
|
|
PrettyPrinter::Block b(f, 2);
|
|
f << "Program =";
|
|
f.linearBreak(1);
|
|
StmtNode::printStatements(f, parsedStatements);
|
|
}
|
|
f.end();
|
|
}
|
|
stdOut << '\n';
|
|
}
|
|
clear(buffer);
|
|
} catch (Exception &e) {
|
|
/* If we got a syntax error on the end of input,
|
|
* then wait for a continuation
|
|
* of input rather than printing the error message. */
|
|
if (!(e.hasKind(Exception::syntaxError) &&
|
|
e.lineNum && e.pos == buffer.size() &&
|
|
e.sourceFile == consoleName)) {
|
|
stdOut << '\n' << e.fullMessage();
|
|
clear(buffer);
|
|
}
|
|
}
|
|
}
|
|
stdOut << '\n';
|
|
}
|
|
|
|
|
|
#if defined(XP_MAC) && !defined(XP_MAC_MPW)
|
|
int main(int argc, char **argv)
|
|
{
|
|
initConsole("\pJavaScript Shell", "Welcome to the js2 shell.\n", argc, argv);
|
|
#else
|
|
int main(int , char **)
|
|
{
|
|
#endif
|
|
|
|
readEvalPrint(stdin, world);
|
|
|
|
return 0;
|
|
// return ProcessArgs(argv + 1, argc - 1);
|
|
}
|