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// Copyright 2021 The Dawn Authors
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
#include "dawn_native/CompilationMessages.h"
#include "common/Assert.h"
#include "dawn_native/dawn_platform.h"
#include <tint/tint.h>
namespace dawn::native {
namespace {
WGPUCompilationMessageType tintSeverityToMessageType(tint::diag::Severity severity) {
switch (severity) {
case tint::diag::Severity::Note:
return WGPUCompilationMessageType_Info;
case tint::diag::Severity::Warning:
return WGPUCompilationMessageType_Warning;
default:
return WGPUCompilationMessageType_Error;
}
}
} // anonymous namespace
OwnedCompilationMessages::OwnedCompilationMessages() {
mCompilationInfo.nextInChain = 0;
mCompilationInfo.messageCount = 0;
mCompilationInfo.messages = nullptr;
}
void OwnedCompilationMessages::AddMessageForTesting(std::string message,
wgpu::CompilationMessageType type,
uint64_t lineNum,
uint64_t linePos,
uint64_t offset,
uint64_t length) {
// Cannot add messages after GetCompilationInfo has been called.
ASSERT(mCompilationInfo.messages == nullptr);
mMessageStrings.push_back(message);
mMessages.push_back({nullptr, nullptr, static_cast<WGPUCompilationMessageType>(type),
lineNum, linePos, offset, length});
}
void OwnedCompilationMessages::AddMessage(const tint::diag::Diagnostic& diagnostic) {
// Cannot add messages after GetCompilationInfo has been called.
ASSERT(mCompilationInfo.messages == nullptr);
// Tint line and column values are 1-based.
uint64_t lineNum = diagnostic.source.range.begin.line;
uint64_t linePos = diagnostic.source.range.begin.column;
// The offset is 0-based.
uint64_t offset = 0;
uint64_t length = 0;
if (lineNum && linePos && diagnostic.source.file) {
const auto& lines = diagnostic.source.file->content.lines;
size_t i = 0;
// To find the offset of the message position, loop through each of the first lineNum-1
// lines and add it's length (+1 to account for the line break) to the offset.
for (; i < lineNum - 1; ++i) {
offset += lines[i].length() + 1;
}
// If the end line is on a different line from the beginning line, add the length of the
// lines in between to the ending offset.
uint64_t endLineNum = diagnostic.source.range.end.line;
uint64_t endLinePos = diagnostic.source.range.end.column;
// If the range has a valid start but the end it not specified, clamp it to the start.
if (endLineNum == 0 || endLinePos == 0) {
endLineNum = lineNum;
endLinePos = linePos;
}
// Negative ranges aren't allowed
ASSERT(endLineNum >= lineNum);
uint64_t endOffset = offset;
for (; i < endLineNum - 1; ++i) {
endOffset += lines[i].length() + 1;
}
// Add the line positions to the offset and endOffset to get their final positions
// within the code string.
offset += linePos - 1;
endOffset += endLinePos - 1;
// Negative ranges aren't allowed
ASSERT(endOffset >= offset);
// The length of the message is the difference between the starting offset and the
// ending offset.
length = endOffset - offset;
}
if (diagnostic.code) {
mMessageStrings.push_back(std::string(diagnostic.code) + ": " + diagnostic.message);
} else {
mMessageStrings.push_back(diagnostic.message);
}
mMessages.push_back({nullptr, nullptr, tintSeverityToMessageType(diagnostic.severity),
lineNum, linePos, offset, length});
}
void OwnedCompilationMessages::AddMessages(const tint::diag::List& diagnostics) {
// Cannot add messages after GetCompilationInfo has been called.
ASSERT(mCompilationInfo.messages == nullptr);
for (const auto& diag : diagnostics) {
AddMessage(diag);
}
AddFormattedTintMessages(diagnostics);
}
void OwnedCompilationMessages::ClearMessages() {
// Cannot clear messages after GetCompilationInfo has been called.
ASSERT(mCompilationInfo.messages == nullptr);
mMessageStrings.clear();
mMessages.clear();
}
const WGPUCompilationInfo* OwnedCompilationMessages::GetCompilationInfo() {
mCompilationInfo.messageCount = mMessages.size();
mCompilationInfo.messages = mMessages.data();
// Ensure every message points at the correct message string. Cannot do this earlier, since
// vector reallocations may move the pointers around.
for (size_t i = 0; i < mCompilationInfo.messageCount; ++i) {
WGPUCompilationMessage& message = mMessages[i];
std::string& messageString = mMessageStrings[i];
message.message = messageString.c_str();
}
return &mCompilationInfo;
}
const std::vector<std::string>& OwnedCompilationMessages::GetFormattedTintMessages() {
return mFormattedTintMessages;
}
void OwnedCompilationMessages::AddFormattedTintMessages(const tint::diag::List& diagnostics) {
tint::diag::List messageList;
size_t warningCount = 0;
size_t errorCount = 0;
for (auto& diag : diagnostics) {
switch (diag.severity) {
case (tint::diag::Severity::Fatal):
case (tint::diag::Severity::Error):
case (tint::diag::Severity::InternalCompilerError): {
errorCount++;
messageList.add(tint::diag::Diagnostic(diag));
break;
}
case (tint::diag::Severity::Warning): {
warningCount++;
messageList.add(tint::diag::Diagnostic(diag));
break;
}
default:
break;
}
}
if (errorCount == 0 && warningCount == 0) {
return;
}
tint::diag::Formatter::Style style;
style.print_newline_at_end = false;
std::ostringstream t;
if (errorCount > 0) {
t << errorCount << " error(s) ";
if (warningCount > 0) {
t << "and ";
}
}
if (warningCount > 0) {
t << warningCount << " warning(s) ";
}
t << "generated while compiling the shader:" << std::endl
<< tint::diag::Formatter{style}.format(messageList);
mFormattedTintMessages.push_back(t.str());
}
} // namespace dawn::native