зеркало из https://github.com/mozilla/pjs.git
major surgery to enable the "load()" native function.
This commit is contained in:
beard%netscape.com
Родитель
7b61502b1e
Коммит
5d6bcd66f6
103
js/js2/js2.cpp
103
js/js2/js2.cpp
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@ -88,8 +88,9 @@ static bool promptLine(LineReader &inReader, string &s, const char *prompt)
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return inReader.readLine(s) != 0;
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}
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World world;
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JSScope global;
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JavaScript::World world;
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/* "filename" of the console */
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const String ConsoleName = widenCString("<console>");
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const bool showTokens = false;
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@ -122,9 +123,7 @@ static JSValue print(const JSValues &argv)
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return kUndefinedValue;
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}
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#ifdef INTERPRET_INPUT
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static void genCode(Context &cx, StmtNode *p, const String &fileName)
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static ICodeModule* genCode(Context &cx, StmtNode *p, const String &fileName)
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{
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ICodeGenerator icg(&cx.getWorld(), cx.getGlobalObject());
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@ -139,24 +138,91 @@ static void genCode(Context &cx, StmtNode *p, const String &fileName)
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ICodeModule *icm = icg.complete();
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icm->setFileName (fileName);
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JSValue result = cx.interpret(icm, JSValues());
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stdOut << "result = " << result << "\n";
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delete icm;
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return icm;
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}
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static void readEvalFile(FILE* in, const String& fileName)
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{
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Context cx(world, &global);
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String buffer;
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string line;
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LineReader inReader(in);
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while (inReader.readLine(line) != 0) {
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appendChars(buffer, line.data(), line.size());
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try {
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Arena a;
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Parser p(world, a, buffer, fileName);
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StmtNode *parsedStatements = p.parseProgram();
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ASSERT(p.lexer.peek(true).hasKind(Token::end));
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{
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PrettyPrinter f(stdOut, 30);
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{
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PrettyPrinter::Block b(f, 2);
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f << "Program =";
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f.linearBreak(1);
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StmtNode::printStatements(f, parsedStatements);
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}
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f.end();
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}
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stdOut << '\n';
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// Generate code for parsedStatements, which is a linked
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// list of zero or more statements
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ICodeModule* icm = genCode(cx, parsedStatements, fileName);
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if (icm) {
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JSValue result = cx.interpret(icm, JSValues());
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delete icm;
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}
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clear(buffer);
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} catch (Exception &e) {
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/* If we got a syntax error on the end of input,
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* then wait for a continuation
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* of input rather than printing the error message. */
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if (!(e.hasKind(Exception::syntaxError) &&
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e.lineNum && e.pos == buffer.size() &&
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e.sourceFile == fileName)) {
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stdOut << '\n' << e.fullMessage();
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clear(buffer);
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}
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}
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}
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}
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static JSValue load(const JSValues &argv)
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{
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size_t n = argv.size();
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if (n > 1) { // the 'this' parameter is un-interesting
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struct {
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char operator() (char16 ch) { return static_cast<char>(ch); }
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} narrow;
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for (size_t i = 1; i < n; ++i) {
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JSValue val = argv[i].toString();
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if (val.isString()) {
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String fileName(*val.string);
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std::string str(fileName.length(), char());
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std::transform(fileName.begin(), fileName.end(), str.begin(), narrow);
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FILE* f = fopen(str.c_str(), "r");
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if (f) {
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readEvalFile(f, fileName);
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fclose(f);
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}
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}
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}
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}
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return kUndefinedValue;
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}
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#endif
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static void readEvalPrint(FILE *in, World &world)
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{
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JSScope glob;
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Context cx(world, &glob);
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Context cx(world, &global);
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#ifdef DEBUGGER_FOO
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jsd.attachToContext (&cx);
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#endif
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StringAtom& printName = world.identifiers[widenCString("print")];
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glob.defineNativeFunction(printName, print);
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global.defineNativeFunction(world.identifiers[widenCString("print")], print);
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global.defineNativeFunction(world.identifiers[widenCString("load")], load);
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String buffer;
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string line;
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@ -198,7 +264,12 @@ static void readEvalPrint(FILE *in, World &world)
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#endif
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// Generate code for parsedStatements, which is a linked
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// list of zero or more statements
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genCode(cx, parsedStatements, ConsoleName);
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ICodeModule* icm = genCode(cx, parsedStatements, ConsoleName);
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if (icm) {
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JSValue result = cx.interpret(icm, JSValues());
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stdOut << "result = " << result << "\n";
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delete icm;
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}
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#endif
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}
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clear(buffer);
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@ -88,8 +88,9 @@ static bool promptLine(LineReader &inReader, string &s, const char *prompt)
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return inReader.readLine(s) != 0;
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}
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World world;
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JSScope global;
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JavaScript::World world;
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/* "filename" of the console */
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const String ConsoleName = widenCString("<console>");
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const bool showTokens = false;
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@ -122,9 +123,7 @@ static JSValue print(const JSValues &argv)
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return kUndefinedValue;
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}
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#ifdef INTERPRET_INPUT
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static void genCode(Context &cx, StmtNode *p, const String &fileName)
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static ICodeModule* genCode(Context &cx, StmtNode *p, const String &fileName)
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{
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ICodeGenerator icg(&cx.getWorld(), cx.getGlobalObject());
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@ -139,24 +138,91 @@ static void genCode(Context &cx, StmtNode *p, const String &fileName)
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ICodeModule *icm = icg.complete();
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icm->setFileName (fileName);
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JSValue result = cx.interpret(icm, JSValues());
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stdOut << "result = " << result << "\n";
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delete icm;
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return icm;
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}
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static void readEvalFile(FILE* in, const String& fileName)
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{
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Context cx(world, &global);
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String buffer;
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string line;
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LineReader inReader(in);
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while (inReader.readLine(line) != 0) {
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appendChars(buffer, line.data(), line.size());
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try {
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Arena a;
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Parser p(world, a, buffer, fileName);
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StmtNode *parsedStatements = p.parseProgram();
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ASSERT(p.lexer.peek(true).hasKind(Token::end));
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{
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PrettyPrinter f(stdOut, 30);
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{
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PrettyPrinter::Block b(f, 2);
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f << "Program =";
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f.linearBreak(1);
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StmtNode::printStatements(f, parsedStatements);
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}
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f.end();
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}
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stdOut << '\n';
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// Generate code for parsedStatements, which is a linked
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// list of zero or more statements
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ICodeModule* icm = genCode(cx, parsedStatements, fileName);
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if (icm) {
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JSValue result = cx.interpret(icm, JSValues());
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delete icm;
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}
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clear(buffer);
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} catch (Exception &e) {
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/* If we got a syntax error on the end of input,
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* then wait for a continuation
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* of input rather than printing the error message. */
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if (!(e.hasKind(Exception::syntaxError) &&
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e.lineNum && e.pos == buffer.size() &&
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e.sourceFile == fileName)) {
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stdOut << '\n' << e.fullMessage();
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clear(buffer);
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}
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}
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}
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}
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static JSValue load(const JSValues &argv)
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{
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size_t n = argv.size();
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if (n > 1) { // the 'this' parameter is un-interesting
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struct {
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char operator() (char16 ch) { return static_cast<char>(ch); }
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} narrow;
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for (size_t i = 1; i < n; ++i) {
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JSValue val = argv[i].toString();
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if (val.isString()) {
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String fileName(*val.string);
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std::string str(fileName.length(), char());
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std::transform(fileName.begin(), fileName.end(), str.begin(), narrow);
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FILE* f = fopen(str.c_str(), "r");
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if (f) {
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readEvalFile(f, fileName);
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fclose(f);
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}
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}
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}
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}
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return kUndefinedValue;
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}
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#endif
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static void readEvalPrint(FILE *in, World &world)
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{
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JSScope glob;
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Context cx(world, &glob);
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Context cx(world, &global);
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#ifdef DEBUGGER_FOO
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jsd.attachToContext (&cx);
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#endif
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StringAtom& printName = world.identifiers[widenCString("print")];
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glob.defineNativeFunction(printName, print);
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global.defineNativeFunction(world.identifiers[widenCString("print")], print);
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global.defineNativeFunction(world.identifiers[widenCString("load")], load);
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String buffer;
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string line;
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@ -198,7 +264,12 @@ static void readEvalPrint(FILE *in, World &world)
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#endif
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// Generate code for parsedStatements, which is a linked
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// list of zero or more statements
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genCode(cx, parsedStatements, ConsoleName);
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ICodeModule* icm = genCode(cx, parsedStatements, ConsoleName);
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if (icm) {
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JSValue result = cx.interpret(icm, JSValues());
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stdOut << "result = " << result << "\n";
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delete icm;
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}
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#endif
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}
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clear(buffer);
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