Remove service-compiler related code.

tools/servicec/lib/src/resources/cc/unicode.cc

-// Copyright (c) 2012, the Dart project authors.  Please see the AUTHORS file
-// for details. All rights reserved. Use of this source code is governed by a
-// BSD-style license that can be found in the LICENSE file.
-
-#include "unicode.h"
-
-const int8_t Utf8::kTrailBytes[256] = {
-  1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
-  1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
-  1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
-  1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
-  1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
-  1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
-  1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
-  1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
-  0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
-  0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
-  0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
-  0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
-  2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2,
-  2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2,
-  3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3,
-  4, 4, 4, 4, 4, 4, 4, 4, 5, 5, 5, 5, 6, 6, 0, 0
-};
-
-
-const uint32_t Utf8::kMagicBits[7] = {
-  0,  // Padding.
-  0x00000000,
-  0x00003080,
-  0x000E2080,
-  0x03C82080,
-  0xFA082080,
-  0x82082080
-};
-
-
-// Minimum values of code points used to check shortest form.
-const uint32_t Utf8::kOverlongMinimum[7] = {
-  0,  // Padding.
-  0x0,
-  0x80,
-  0x800,
-  0x10000,
-  0xFFFFFFFF,
-  0xFFFFFFFF
-};
-
-class CodePointIterator {
- public:
-  explicit CodePointIterator(List<uint16_t> str)
-      : str_(str),
-        ch_(0),
-        index_(-1),
-        end_(str.length()) {
-  }
-
-  int32_t Current() const {
-    return ch_;
-  }
-
-  bool Next() {
-    intptr_t length = Utf16::Length(ch_);
-    if (index_ < (end_ - length)) {
-      index_ += length;
-      ch_ = str_[index_];
-      if (Utf16::IsLeadSurrogate(ch_) && (index_ < (end_ - 1))) {
-        int32_t ch2 = str_[index_ + 1];
-        if (Utf16::IsTrailSurrogate(ch2)) {
-          ch_ = Utf16::Decode(ch_, ch2);
-        }
-      }
-      return true;
-    }
-    index_ = end_;
-    return false;
-  }
-
- private:
-  List<uint16_t> str_;
-  int32_t ch_;
-  intptr_t index_;
-  intptr_t end_;
-};
-
-// Returns the most restricted coding form in which the sequence of utf8
-// characters in 'utf8_array' can be represented in, and the number of
-// code units needed in that form.
-intptr_t Utf8::CodeUnitCount(const char* utf8_array,
-                             intptr_t array_len,
-                             Type* type) {
-  intptr_t len = 0;
-  Type char_type = kLatin1;
-  for (intptr_t i = 0; i < array_len; i++) {
-    uint8_t code_unit = utf8_array[i];
-    if (!IsTrailByte(code_unit)) {
-      ++len;
-      if (!IsLatin1SequenceStart(code_unit)) {  // > U+00FF
-        if (IsSupplementarySequenceStart(code_unit)) {  // >= U+10000
-          char_type = kSupplementary;
-          ++len;
-        } else if (char_type == kLatin1) {
-          char_type = kBMP;
-        }
-      }
-    }
-  }
-  *type = char_type;
-  return len;
-}
-
-intptr_t Utf8::Length(int32_t ch) {
-  if (ch <= kMaxOneByteChar) {
-    return 1;
-  } else if (ch <= kMaxTwoByteChar) {
-    return 2;
-  } else if (ch <= kMaxThreeByteChar) {
-    return 3;
-  }
-  return 4;
-}
-
-intptr_t Utf8::Length(List<uint16_t> str) {
-  intptr_t length = 0;
-  CodePointIterator it(str);
-  while (it.Next()) {
-    int32_t ch = it.Current();
-    length += Utf8::Length(ch);
-  }
-  return length;
-}
-
-intptr_t Utf8::Encode(int32_t ch, char* dst) {
-  static const int kMask = ~(1 << 6);
-  if (ch <= kMaxOneByteChar) {
-    dst[0] = ch;
-    return 1;
-  }
-  if (ch <= kMaxTwoByteChar) {
-    dst[0] = 0xC0 | (ch >> 6);
-    dst[1] = 0x80 | (ch & kMask);
-    return 2;
-  }
-  if (ch <= kMaxThreeByteChar) {
-    dst[0] = 0xE0 | (ch >> 12);
-    dst[1] = 0x80 | ((ch >> 6) & kMask);
-    dst[2] = 0x80 | (ch & kMask);
-    return 3;
-  }
-  dst[0] = 0xF0 | (ch >> 18);
-  dst[1] = 0x80 | ((ch >> 12) & kMask);
-  dst[2] = 0x80 | ((ch >> 6) & kMask);
-  dst[3] = 0x80 | (ch & kMask);
-  return 4;
-}
-
-intptr_t Utf8::Encode(List<uint16_t> src, char* dst, intptr_t len) {
-  intptr_t pos = 0;
-  CodePointIterator it(src);
-  while (it.Next()) {
-    int32_t ch = it.Current();
-    intptr_t num_bytes = Utf8::Length(ch);
-    if (pos + num_bytes > len) {
-      break;
-    }
-    Utf8::Encode(ch, &dst[pos]);
-    pos += num_bytes;
-  }
-  return pos;
-}
-
-intptr_t Utf8::Decode(const char* utf8_array,
-                      intptr_t array_len,
-                      int32_t* dst) {
-  uint32_t ch = utf8_array[0] & 0xFF;
-  intptr_t i = 1;
-  if (ch >= 0x80) {
-    intptr_t num_trail_bytes = kTrailBytes[ch];
-    bool is_malformed = false;
-    for (; i < num_trail_bytes; ++i) {
-      if (i < array_len) {
-        uint8_t code_unit = utf8_array[i];
-        is_malformed |= !IsTrailByte(code_unit);
-        ch = (ch << 6) + code_unit;
-      } else {
-        *dst = -1;
-        return 0;
-      }
-    }
-    ch -= kMagicBits[num_trail_bytes];
-    if (!((is_malformed == false) &&
-          (i == num_trail_bytes) &&
-          !Utf::IsOutOfRange(ch) &&
-          !IsNonShortestForm(ch, i) &&
-          !Utf16::IsSurrogate(ch))) {
-      *dst = -1;
-      return 0;
-    }
-  }
-  *dst = ch;
-  return i;
-}
-
-bool Utf8::DecodeToUTF16(const char* utf8_array,
-                         intptr_t array_len,
-                         uint16_t* dst,
-                         intptr_t len) {
-  intptr_t i = 0;
-  intptr_t j = 0;
-  intptr_t num_bytes;
-  for (; (i < array_len) && (j < len); i += num_bytes, ++j) {
-    int32_t ch;
-    bool is_supplementary = IsSupplementarySequenceStart(utf8_array[i]);
-    num_bytes = Utf8::Decode(&utf8_array[i], (array_len - i), &ch);
-    if (ch == -1) {
-      return false;  // Invalid input.
-    }
-    if (is_supplementary) {
-      Utf16::Encode(ch, &dst[j]);
-      j = j + 1;
-    } else {
-      dst[j] = ch;
-    }
-  }
-  if ((i < array_len) && (j == len)) {
-    return false;  // Output overflow.
-  }
-  return true;  // Success.
-}
-
-void Utf16::Encode(int32_t codepoint, uint16_t* dst) {
-  dst[0] = (Utf16::kLeadSurrogateOffset + (codepoint >> 10));
-  dst[1] = (0xDC00 + (codepoint & 0x3FF));
-}