mirror of
https://github.com/mozilla/gecko-dev.git
synced 2024-11-08 12:37:37 +00:00
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 or
|
|
* 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, Pragma::Flags flags)
|
|
{
|
|
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, flags, 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, Pragma::js2);
|
|
|
|
return 0;
|
|
// return ProcessArgs(argv + 1, argc - 1);
|
|
}
|