Updating to start DikDik project branch.

git-svn-id: svn://10.0.0.236/branches/JS2_DIKDIK_BRANCH@92037 18797224-902f-48f8-a5cc-f745e15eee43

mozilla/js2/tests/cpp/DikDik_Shell.cpp

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+// -*- 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.
+
+
+//
+// JS2 shell.
+//
+
+#ifdef _WIN32
+ // Turn off warnings about identifiers too long in browser information
+ #pragma warning(disable: 4786)
+#endif
+
+
+#include <algorithm>
+#include <assert.h>
+
+#include "world.h"
+#include "reader.h"
+#include "parser.h"
+#include "js2runtime.h"
+#include "bytecodegen.h"
+
+#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
+
+namespace JavaScript {
+namespace Shell {
+    
+//    using namespace JS2Runtime;
+    
+
+// 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 (prompt) {
+        stdOut << prompt;
+	  #ifdef XP_MAC_MPW
+        // Print a CR after the prompt because MPW grabs the entire
+        // line when entering an interactive command.
+        stdOut << '\n';
+	  #endif
+    }
+    return inReader.readLine(s) != 0;
+}
+
+World world;
+
+/* "filename" of the console */
+const String ConsoleName = widenCString("<console>");
+const bool showTokens = false;
+
+#define INTERPRET_INPUT 0
+
+static void readEvalPrint(FILE *in, World &world)
+{
+    String buffer;
+    string line;
+    LineReader inReader(in);
+
+    JSObject globalObject;
+    Context cx(&globalObject, world);
+
+    while (promptLine(inReader, line, buffer.empty() ? "dd> " : "> ")) {
+        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';
+#ifdef INTERPRET_INPUT
+				// Generate code for parsedStatements, which is a linked 
+                // list of zero or more statements
+                cx.buildRuntime(parsedStatements);
+                stdOut << globalObject;
+                JS2Runtime::ByteCodeModule* bcm = cx.genCode(parsedStatements, ConsoleName);
+                if (bcm) {
+#ifdef SHOW_ICODE
+                    stdOut << *bcm;
+#endif
+                    JSValue result = cx.interpret(bcm, JSValueList());
+                    stdOut << "result = " << result << "\n";
+                    delete bcm;
+                }
+#endif
+            }
+            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';
+}
+
+} /* namespace Shell */
+} /* namespace JavaScript */
+
+
+#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
+
+    using namespace JavaScript;
+    using namespace Shell;
+
+    readEvalPrint(stdin, world);
+    return 0;
+}