| /* |
| * Copyright (C) 2016-2017 Apple Inc. All rights reserved. |
| * |
| * Redistribution and use in source and binary forms, with or without |
| * modification, are permitted provided that the following conditions |
| * are met: |
| * 1. Redistributions of source code must retain the above copyright |
| * notice, this list of conditions and the following disclaimer. |
| * 2. 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. |
| * |
| * THIS SOFTWARE IS PROVIDED BY APPLE INC. ``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 APPLE INC. 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 "config.h" |
| #include "StackFrame.h" |
| |
| #include "CodeBlock.h" |
| #include "DebuggerPrimitives.h" |
| #include "JSCInlines.h" |
| #include <wtf/text/StringBuilder.h> |
| |
| namespace JSC { |
| |
| StackFrame::StackFrame(VM& vm, JSCell* owner, JSCell* callee) |
| : m_callee(vm, owner, callee) |
| { |
| } |
| |
| StackFrame::StackFrame(VM& vm, JSCell* owner, JSCell* callee, CodeBlock* codeBlock, unsigned bytecodeOffset) |
| : m_callee(vm, owner, callee) |
| , m_codeBlock(vm, owner, codeBlock) |
| , m_bytecodeOffset(bytecodeOffset) |
| { |
| } |
| |
| StackFrame::StackFrame(Wasm::IndexOrName indexOrName) |
| : m_wasmFunctionIndexOrName(indexOrName) |
| , m_isWasmFrame(true) |
| { |
| } |
| |
| intptr_t StackFrame::sourceID() const |
| { |
| if (!m_codeBlock) |
| return noSourceID; |
| return m_codeBlock->ownerScriptExecutable()->sourceID(); |
| } |
| |
| String StackFrame::sourceURL() const |
| { |
| if (m_isWasmFrame) |
| return ASCIILiteral("[wasm code]"); |
| |
| if (!m_codeBlock) { |
| return ASCIILiteral("[native code]"); |
| } |
| |
| String sourceURL = m_codeBlock->ownerScriptExecutable()->sourceURL(); |
| if (!sourceURL.isNull()) |
| return sourceURL; |
| return emptyString(); |
| } |
| |
| String StackFrame::functionName(VM& vm) const |
| { |
| if (m_isWasmFrame) |
| return makeString(m_wasmFunctionIndexOrName); |
| |
| if (m_codeBlock) { |
| switch (m_codeBlock->codeType()) { |
| case EvalCode: |
| return ASCIILiteral("eval code"); |
| case ModuleCode: |
| return ASCIILiteral("module code"); |
| case FunctionCode: |
| break; |
| case GlobalCode: |
| return ASCIILiteral("global code"); |
| default: |
| ASSERT_NOT_REACHED(); |
| } |
| } |
| String name; |
| if (m_callee) { |
| if (m_callee->isObject()) |
| name = getCalculatedDisplayName(vm, jsCast<JSObject*>(m_callee.get())).impl(); |
| } |
| return name.isNull() ? emptyString() : name; |
| } |
| |
| void StackFrame::computeLineAndColumn(unsigned& line, unsigned& column) const |
| { |
| if (!m_codeBlock) { |
| line = 0; |
| column = 0; |
| return; |
| } |
| |
| int divot = 0; |
| int unusedStartOffset = 0; |
| int unusedEndOffset = 0; |
| m_codeBlock->expressionRangeForBytecodeOffset(m_bytecodeOffset, divot, unusedStartOffset, unusedEndOffset, line, column); |
| |
| ScriptExecutable* executable = m_codeBlock->ownerScriptExecutable(); |
| if (executable->hasOverrideLineNumber()) |
| line = executable->overrideLineNumber(); |
| } |
| |
| String StackFrame::toString(VM& vm) const |
| { |
| StringBuilder traceBuild; |
| String functionName = this->functionName(vm); |
| String sourceURL = this->sourceURL(); |
| traceBuild.append(functionName); |
| if (!sourceURL.isEmpty()) { |
| if (!functionName.isEmpty()) |
| traceBuild.append('@'); |
| traceBuild.append(sourceURL); |
| if (hasLineAndColumnInfo()) { |
| unsigned line; |
| unsigned column; |
| computeLineAndColumn(line, column); |
| |
| traceBuild.append(':'); |
| traceBuild.appendNumber(line); |
| traceBuild.append(':'); |
| traceBuild.appendNumber(column); |
| } |
| } |
| return traceBuild.toString().impl(); |
| } |
| |
| void StackFrame::visitChildren(SlotVisitor& visitor) |
| { |
| if (m_callee) |
| visitor.append(m_callee); |
| if (m_codeBlock) |
| visitor.append(m_codeBlock); |
| } |
| |
| } // namespace JSC |
| |