| // |
| // Copyright (c) 2018 The ANGLE Project Authors. All rights reserved. |
| // Use of this source code is governed by a BSD-style license that can be |
| // found in the LICENSE file. |
| // |
| // ImmutableStringBuilder.cpp: Stringstream-like utility for building pool allocated strings where |
| // the maximum length is known in advance. |
| // |
| |
| #include "compiler/translator/ImmutableStringBuilder.h" |
| |
| #include <stdio.h> |
| |
| namespace sh |
| { |
| |
| ImmutableStringBuilder &ImmutableStringBuilder::operator<<(const ImmutableString &str) |
| { |
| ASSERT(mData != nullptr); |
| ASSERT(mPos + str.length() <= mMaxLength); |
| memcpy(mData + mPos, str.data(), str.length()); |
| mPos += str.length(); |
| return *this; |
| } |
| |
| ImmutableStringBuilder &ImmutableStringBuilder::operator<<(const char *str) |
| { |
| ASSERT(mData != nullptr); |
| size_t len = strlen(str); |
| ASSERT(mPos + len <= mMaxLength); |
| memcpy(mData + mPos, str, len); |
| mPos += len; |
| return *this; |
| } |
| |
| ImmutableStringBuilder &ImmutableStringBuilder::operator<<(const char &c) |
| { |
| ASSERT(mData != nullptr); |
| ASSERT(mPos + 1 <= mMaxLength); |
| mData[mPos++] = c; |
| return *this; |
| } |
| |
| void ImmutableStringBuilder::appendDecimal(const uint32_t &u) |
| { |
| int numChars = snprintf(mData + mPos, mMaxLength - mPos, "%d", u); |
| ASSERT(numChars >= 0); |
| ASSERT(mPos + numChars <= mMaxLength); |
| mPos += numChars; |
| } |
| |
| ImmutableStringBuilder::operator ImmutableString() |
| { |
| mData[mPos] = '\0'; |
| ImmutableString str(static_cast<const char *>(mData), mPos); |
| #if defined(ANGLE_ENABLE_ASSERTS) |
| // Make sure that nothing is added to the string after it is finalized. |
| mData = nullptr; |
| #endif |
| return str; |
| } |
| |
| } // namespace sh |