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152 lines
4.4 KiB
C++
152 lines
4.4 KiB
C++
/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*-
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*
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* The contents of this file are subject to the Netscape Public
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* License Version 1.1 (the "License"); you may not use this file
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* except in compliance with the License. You may obtain a copy of
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* the License at http://www.mozilla.org/NPL/
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*
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* Software distributed under the License is distributed on an "AS
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* IS" basis, WITHOUT WARRANTY OF ANY KIND, either express oqr
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* implied. See the License for the specific language governing
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* rights and limitations under the License.
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*
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* The Original Code is the JavaScript 2 Prototype.
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*
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* The Initial Developer of the Original Code is Netscape
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* Communications Corporation. Portions created by Netscape are
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* Copyright (C) 1998 Netscape Communications Corporation. All
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* Rights Reserved.
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*
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* Contributor(s):
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*
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* Alternatively, the contents of this file may be used under the
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* terms of the GNU Public License (the "GPL"), in which case the
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* provisions of the GPL are applicable instead of those above.
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* If you wish to allow use of your version of this file only
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* under the terms of the GPL and not to allow others to use your
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* version of this file under the NPL, indicate your decision by
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* deleting the provisions above and replace them with the notice
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* and other provisions required by the GPL. If you do not delete
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* the provisions above, a recipient may use your version of this
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* file under either the NPL or the GPL.
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*/
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#include "world.h"
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#include "debugger.h"
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#include <string>
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#include <ctype.h>
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#include <assert.h>
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namespace JavaScript {
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namespace Debugger {
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enum ShellCommand {
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ASSEMBLE,
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DISSASSEMBLE,
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STEP,
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PRINT,
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PRINT2,
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EXIT,
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COMMAND_COUNT
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};
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static const char *shell_cmd_names[] = {
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"assemble",
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"dissassemble",
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"step",
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"print",
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"print2",
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"exit",
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0
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};
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/* return true if str2 starts with/is str1
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* XXX ignore case */
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static bool
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startsWith (const String &str1, const String &str2)
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{
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uint n;
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size_t m = str1.size();
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if (m > str2.size())
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return false;
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for (n = 0; n < m; ++n)
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if (str1[n] != str2[n])
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return false;
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return true;
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}
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bool
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Shell::doCommand (Interpreter::Context * /*context*/, const String &source)
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{
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Lexer lex (mWorld, source, widenCString("debugger console"), 0);
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const String *cmd;
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ShellCommand match = COMMAND_COUNT;
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uint32 ambig_matches = 0;
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const Token &t = lex.get(true);
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if (t.hasKind(Token::identifier))
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cmd = &(t.getIdentifier());
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else
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{
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mErr << "you idiot.\n";
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return false;
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}
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for (int i = ASSEMBLE; i < COMMAND_COUNT; ++i)
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{
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String possibleMatch (widenCString(shell_cmd_names[i]));
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if (startsWith(*cmd, possibleMatch))
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{
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if (cmd->size() == possibleMatch.size())
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{
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/* exact match */
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ambig_matches = 0;
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match = (ShellCommand)i;
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break;
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}
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else if (match == COMMAND_COUNT) /* no match yet */
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match = (ShellCommand)i;
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else
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++ambig_matches; /* something already matched,
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* ambiguous command */
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}
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}
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if (ambig_matches == 0)
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switch (match)
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{
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case COMMAND_COUNT:
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mErr << "Unknown command '" << *cmd << "'.\n";
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break;
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case ASSEMBLE:
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case DISSASSEMBLE:
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case STEP:
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case PRINT:
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default:
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mErr << "Input '" << *cmd << "' matched command '" <<
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shell_cmd_names[match] << "'.\n";
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break;
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}
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else
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mErr << "Ambiguous command '" << *cmd << "', " <<
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(ambig_matches + 1) << " similar commands.\n";
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return (ambig_matches == 0);
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}
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} /* namespace Debugger */
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} /* namespace JavaScript */
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