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-rw-r--r--deps/v8/preparser/preparser-process.cc372
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diff --git a/deps/v8/preparser/preparser-process.cc b/deps/v8/preparser/preparser-process.cc
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--- a/deps/v8/preparser/preparser-process.cc
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@@ -1,372 +0,0 @@
-// Copyright 2012 the V8 project authors. All rights reserved.
-// Redistribution and use in source and binary forms, with or without
-// modification, are permitted provided that the following conditions are
-// met:
-//
-// * Redistributions of source code must retain the above copyright
-// notice, this list of conditions and the following disclaimer.
-// * Redistributions in binary form must reproduce the above
-// copyright notice, this list of conditions and the following
-// disclaimer in the documentation and/or other materials provided
-// with the distribution.
-// * Neither the name of Google Inc. nor the names of its
-// contributors may be used to endorse or promote products derived
-// from this software without specific prior written permission.
-//
-// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
-// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
-// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
-// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
-// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
-// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
-// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
-// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
-// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
-// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
-// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
-
-#include <stdlib.h>
-#include <stdarg.h>
-#include <stdio.h>
-#include <string.h>
-
-#include "../include/v8.h"
-#include "../include/v8stdint.h"
-#include "../include/v8-preparser.h"
-
-#include "../src/preparse-data-format.h"
-
-namespace i = v8::internal;
-
-// This file is only used for testing the preparser.
-// The first argument must be the path of a JavaScript source file, or
-// the flags "-e" and the next argument is then the source of a JavaScript
-// program.
-// Optionally this can be followed by the word "throws" (case sensitive),
-// which signals that the parsing is expected to throw - the default is
-// to expect the parsing to not throw.
-// The command line can further be followed by a message text (the
-// *type* of the exception to throw), and even more optionally, the
-// start and end position reported with the exception.
-//
-// This source file is preparsed and tested against the expectations, and if
-// successful, the resulting preparser data is written to stdout.
-// Diagnostic output is output on stderr.
-// The source file must contain only ASCII characters (UTF-8 isn't supported).
-// The file is read into memory, so it should have a reasonable size.
-
-
-// Adapts an ASCII string to the UnicodeInputStream interface.
-class AsciiInputStream : public v8::UnicodeInputStream {
- public:
- AsciiInputStream(const uint8_t* buffer, size_t length)
- : buffer_(buffer),
- end_offset_(static_cast<int>(length)),
- offset_(0) { }
-
- virtual ~AsciiInputStream() { }
-
- virtual void PushBack(int32_t ch) {
- offset_--;
-#ifdef DEBUG
- if (offset_ < 0 ||
- (ch != ((offset_ >= end_offset_) ? -1 : buffer_[offset_]))) {
- fprintf(stderr, "Invalid pushback: '%c' at offset %d.", ch, offset_);
- exit(1);
- }
-#endif
- }
-
- virtual int32_t Next() {
- if (offset_ >= end_offset_) {
- offset_++; // Increment anyway to allow symmetric pushbacks.
- return -1;
- }
- uint8_t next_char = buffer_[offset_];
-#ifdef DEBUG
- if (next_char > 0x7fu) {
- fprintf(stderr, "Non-ASCII character in input: '%c'.", next_char);
- exit(1);
- }
-#endif
- offset_++;
- return static_cast<int32_t>(next_char);
- }
-
- private:
- const uint8_t* buffer_;
- const int end_offset_;
- int offset_;
-};
-
-
-bool ReadBuffer(FILE* source, void* buffer, size_t length) {
- size_t actually_read = fread(buffer, 1, length, source);
- return (actually_read == length);
-}
-
-
-bool WriteBuffer(FILE* dest, const void* buffer, size_t length) {
- size_t actually_written = fwrite(buffer, 1, length, dest);
- return (actually_written == length);
-}
-
-
-class PreparseDataInterpreter {
- public:
- PreparseDataInterpreter(const uint8_t* data, int length)
- : data_(data), length_(length), message_(NULL) { }
-
- ~PreparseDataInterpreter() {
- if (message_ != NULL) delete[] message_;
- }
-
- bool valid() {
- int header_length =
- i::PreparseDataConstants::kHeaderSize * sizeof(int); // NOLINT
- return length_ >= header_length;
- }
-
- bool throws() {
- return valid() &&
- word(i::PreparseDataConstants::kHasErrorOffset) != 0;
- }
-
- const char* message() {
- if (message_ != NULL) return message_;
- if (!throws()) return NULL;
- int text_pos = i::PreparseDataConstants::kHeaderSize +
- i::PreparseDataConstants::kMessageTextPos;
- int length = word(text_pos);
- char* buffer = new char[length + 1];
- for (int i = 1; i <= length; i++) {
- int character = word(text_pos + i);
- buffer[i - 1] = character;
- }
- buffer[length] = '\0';
- message_ = buffer;
- return buffer;
- }
-
- int beg_pos() {
- if (!throws()) return -1;
- return word(i::PreparseDataConstants::kHeaderSize +
- i::PreparseDataConstants::kMessageStartPos);
- }
-
- int end_pos() {
- if (!throws()) return -1;
- return word(i::PreparseDataConstants::kHeaderSize +
- i::PreparseDataConstants::kMessageEndPos);
- }
-
- private:
- int word(int offset) {
- const int* word_data = reinterpret_cast<const int*>(data_);
- if (word_data + offset < reinterpret_cast<const int*>(data_ + length_)) {
- return word_data[offset];
- }
- return -1;
- }
-
- const uint8_t* const data_;
- const int length_;
- const char* message_;
-};
-
-
-template <typename T>
-class ScopedPointer {
- public:
- explicit ScopedPointer() : pointer_(NULL) {}
- explicit ScopedPointer(T* pointer) : pointer_(pointer) {}
- ~ScopedPointer() { if (pointer_ != NULL) delete[] pointer_; }
- T& operator[](int index) { return pointer_[index]; }
- T* operator*() { return pointer_ ;}
- T* operator=(T* new_value) {
- if (pointer_ != NULL) delete[] pointer_;
- pointer_ = new_value;
- return new_value;
- }
- private:
- T* pointer_;
-};
-
-
-
-void fail(v8::PreParserData* data, const char* message, ...) {
- va_list args;
- va_start(args, message);
- vfprintf(stderr, message, args);
- va_end(args);
- fflush(stderr);
- if (data != NULL) {
- // Print preparser data to stdout.
- uint32_t size = static_cast<uint32_t>(data->size());
- fprintf(stderr, "LOG: data size: %u\n", size);
- if (!WriteBuffer(stdout, data->data(), size)) {
- perror("ERROR: Writing data");
- fflush(stderr);
- }
- }
- exit(EXIT_FAILURE);
-}
-
-
-bool IsFlag(const char* arg) {
- // Anything starting with '-' is considered a flag.
- // It's summarily ignored for now.
- return arg[0] == '-';
-}
-
-
-struct ExceptionExpectation {
- ExceptionExpectation()
- : throws(false), type(NULL), beg_pos(-1), end_pos(-1) { }
- bool throws;
- const char* type;
- int beg_pos;
- int end_pos;
-};
-
-
-void CheckException(v8::PreParserData* data,
- ExceptionExpectation* expects) {
- PreparseDataInterpreter reader(data->data(), static_cast<int>(data->size()));
- if (expects->throws) {
- if (!reader.throws()) {
- if (expects->type == NULL) {
- fail(data, "Didn't throw as expected\n");
- } else {
- fail(data, "Didn't throw \"%s\" as expected\n", expects->type);
- }
- }
- if (expects->type != NULL) {
- const char* actual_message = reader.message();
- if (strcmp(expects->type, actual_message)) {
- fail(data, "Wrong error message. Expected <%s>, found <%s> at %d..%d\n",
- expects->type, actual_message, reader.beg_pos(), reader.end_pos());
- }
- }
- if (expects->beg_pos >= 0) {
- if (expects->beg_pos != reader.beg_pos()) {
- fail(data, "Wrong error start position: Expected %i, found %i\n",
- expects->beg_pos, reader.beg_pos());
- }
- }
- if (expects->end_pos >= 0) {
- if (expects->end_pos != reader.end_pos()) {
- fail(data, "Wrong error end position: Expected %i, found %i\n",
- expects->end_pos, reader.end_pos());
- }
- }
- } else if (reader.throws()) {
- const char* message = reader.message();
- fail(data, "Throws unexpectedly with message: %s at location %d-%d\n",
- message, reader.beg_pos(), reader.end_pos());
- }
-}
-
-
-ExceptionExpectation ParseExpectation(int argc, const char* argv[]) {
- // Parse ["throws" [<exn-type> [<start> [<end>]]]].
- ExceptionExpectation expects;
- int arg_index = 0;
- while (argc > arg_index && strncmp("throws", argv[arg_index], 7)) {
- arg_index++;
- }
- if (argc > arg_index) {
- expects.throws = true;
- arg_index++;
- if (argc > arg_index && !IsFlag(argv[arg_index])) {
- expects.type = argv[arg_index];
- arg_index++;
- if (argc > arg_index && !IsFlag(argv[arg_index])) {
- expects.beg_pos = atoi(argv[arg_index]); // NOLINT
- arg_index++;
- if (argc > arg_index && !IsFlag(argv[arg_index])) {
- expects.end_pos = atoi(argv[arg_index]); // NOLINT
- }
- }
- }
- }
- return expects;
-}
-
-
-int main(int argc, const char* argv[]) {
- // Parse command line.
- // Format: preparser (<scriptfile> | -e "<source>")
- // ["throws" [<exn-type> [<start> [<end>]]]]
- // Any flags (except an initial -e) are ignored.
- // Flags must not separate "throws" and its arguments.
-
- // Check for mandatory filename argument.
- int arg_index = 1;
- if (argc <= arg_index) {
- fail(NULL, "ERROR: No filename on command line.\n");
- }
- const uint8_t* source = NULL;
- const char* filename = argv[arg_index];
- if (!strcmp(filename, "-e")) {
- arg_index++;
- if (argc <= arg_index) {
- fail(NULL, "ERROR: No source after -e on command line.\n");
- }
- source = reinterpret_cast<const uint8_t*>(argv[arg_index]);
- }
- // Check remainder of command line for exception expectations.
- arg_index++;
- ExceptionExpectation expects =
- ParseExpectation(argc - arg_index, argv + arg_index);
-
- v8::V8::Initialize();
-
- ScopedPointer<uint8_t> buffer;
- size_t length;
-
- if (source == NULL) {
- // Open JS file.
- FILE* input = fopen(filename, "rb");
- if (input == NULL) {
- perror("ERROR: Error opening file");
- fflush(stderr);
- return EXIT_FAILURE;
- }
- // Find length of JS file.
- if (fseek(input, 0, SEEK_END) != 0) {
- perror("ERROR: Error during seek");
- fflush(stderr);
- return EXIT_FAILURE;
- }
- length = static_cast<size_t>(ftell(input));
- rewind(input);
- // Read JS file into memory buffer.
- buffer = new uint8_t[length];
- if (!ReadBuffer(input, *buffer, length)) {
- perror("ERROR: Reading file");
- fflush(stderr);
- return EXIT_FAILURE;
- }
- fclose(input);
- source = *buffer;
- } else {
- length = strlen(reinterpret_cast<const char*>(source));
- }
-
- // Preparse input file.
- AsciiInputStream input_buffer(source, length);
- size_t kMaxStackSize = 64 * 1024 * sizeof(void*); // NOLINT
- v8::PreParserData data = v8::Preparse(&input_buffer, kMaxStackSize);
-
- // Fail if stack overflow.
- if (data.stack_overflow()) {
- fail(&data, "ERROR: Stack overflow\n");
- }
-
- // Check that the expected exception is thrown, if an exception is
- // expected.
- CheckException(&data, &expects);
-
- return EXIT_SUCCESS;
-}
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