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Implement a very basic colored syntax highlighting for llvm-dwarfdump.

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The color scheme is the same as the one used by the colorize dwarfdump
script on Darwin.
A new --color option can be used to forcibly turn color on or off.

http://reviews.llvm.org/D6852

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@225269 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Adrian Prantl
2015-01-06 16:50:25 +00:00
parent 15914b5c22
commit aea3b23b9b
5 changed files with 112 additions and 21 deletions
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lib/DebugInfo/DWARFDebugInfoEntry.cpp
+19 -13
View File
@@ -7,6 +7,7 @@
//
//===----------------------------------------------------------------------===//
#include "SyntaxHighlighting.h"
#include "llvm/DebugInfo/DWARFDebugInfoEntry.h"
#include "llvm/DebugInfo/DWARFCompileUnit.h"
#include "llvm/DebugInfo/DWARFContext.h"
@@ -19,6 +20,7 @@
#include "llvm/Support/raw_ostream.h"
using namespace llvm;
using namespace dwarf;
using namespace syntax;
// Small helper to extract a DIE pointed by a reference
// attribute. It looks up the Unit containing the DIE and calls
@@ -39,15 +41,17 @@ void DWARFDebugInfoEntryMinimal::dump(raw_ostream &OS, DWARFUnit *u,
if (debug_info_data.isValidOffset(offset)) {
uint32_t abbrCode = debug_info_data.getULEB128(&offset);
WithColor(OS, syntax::Address).get() << format("\n0x%8.8x: ", Offset);
OS << format("\n0x%8.8x: ", Offset);
if (abbrCode) {
if (AbbrevDecl) {
const char *tagString = TagString(getTag());
if (tagString)
OS.indent(indent) << tagString;
else
OS.indent(indent) << format("DW_TAG_Unknown_%x", getTag());
const char *tagString = TagString(getTag());
if (tagString)
WithColor(OS, syntax::Tag).get().indent(indent) << tagString;
else
WithColor(OS, syntax::Tag).get().indent(indent) <<
format("DW_TAG_Unknown_%x", getTag());
OS << format(" [%u] %c\n", abbrCode,
AbbrevDecl->hasChildren() ? '*' : ' ');
@@ -114,9 +118,10 @@ void DWARFDebugInfoEntryMinimal::dumpAttribute(raw_ostream &OS,
OS.indent(indent+2);
const char *attrString = AttributeString(attr);
if (attrString)
OS << attrString;
WithColor(OS, syntax::Attribute) << attrString;
else
OS << format("DW_AT_Unknown_%x", attr);
WithColor(OS, syntax::Attribute).get() << format("DW_AT_Unknown_%x", attr);
const char *formString = FormEncodingString(form);
if (formString)
OS << " [" << formString << ']';
@@ -132,7 +137,9 @@ void DWARFDebugInfoEntryMinimal::dumpAttribute(raw_ostream &OS,
const char *Name = nullptr;
std::string File;
auto Color = syntax::Enumerator;
if (attr == DW_AT_decl_file || attr == DW_AT_call_file) {
Color = syntax::String;
if (const auto *LT = u->getContext().getLineTableForUnit(u))
if (LT->getFileNameByIndex(
formValue.getAsUnsignedConstant().getValue(),
@@ -144,13 +151,12 @@ void DWARFDebugInfoEntryMinimal::dumpAttribute(raw_ostream &OS,
} else if (Optional<uint64_t> Val = formValue.getAsUnsignedConstant())
Name = AttributeValueString(attr, *Val);
if (Name) {
OS << Name;
} else if (attr == DW_AT_decl_line || attr == DW_AT_call_line) {
if (Name)
WithColor(OS, Color) << Name;
else if (attr == DW_AT_decl_line || attr == DW_AT_call_line)
OS << *formValue.getAsUnsignedConstant();
} else {
else
formValue.dump(OS, u);
}
// We have dumped the attribute raw value. For some attributes
// having both the raw value and the pretty-printed value is