forked from OSchip/llvm-project
82 lines
2.9 KiB
C++
82 lines
2.9 KiB
C++
//===-- Highlighter.cpp -----------------------------------------*- C++ -*-===//
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//
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// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
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// See https://llvm.org/LICENSE.txt for license information.
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// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
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//
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//===----------------------------------------------------------------------===//
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#include "lldb/Core/Highlighter.h"
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#include "lldb/Target/Language.h"
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#include "lldb/Utility/AnsiTerminal.h"
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#include "lldb/Utility/StreamString.h"
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using namespace lldb_private;
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using namespace lldb_private::ansi;
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void HighlightStyle::ColorStyle::Apply(Stream &s, llvm::StringRef value) const {
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s << m_prefix << value << m_suffix;
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}
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void HighlightStyle::ColorStyle::Set(llvm::StringRef prefix,
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llvm::StringRef suffix) {
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m_prefix = FormatAnsiTerminalCodes(prefix);
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m_suffix = FormatAnsiTerminalCodes(suffix);
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}
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void DefaultHighlighter::Highlight(const HighlightStyle &options,
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llvm::StringRef line,
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llvm::Optional<size_t> cursor_pos,
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llvm::StringRef previous_lines,
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Stream &s) const {
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// If we don't have a valid cursor, then we just print the line as-is.
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if (!cursor_pos || *cursor_pos >= line.size()) {
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s << line;
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return;
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}
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// If we have a valid cursor, we have to apply the 'selected' style around
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// the character below the cursor.
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// Split the line around the character which is below the cursor.
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size_t column = *cursor_pos;
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// Print the characters before the cursor.
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s << line.substr(0, column);
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// Print the selected character with the defined color codes.
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options.selected.Apply(s, line.substr(column, 1));
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// Print the rest of the line.
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s << line.substr(column + 1U);
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}
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static HighlightStyle::ColorStyle GetColor(const char *c) {
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return HighlightStyle::ColorStyle(c, "${ansi.normal}");
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}
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HighlightStyle HighlightStyle::MakeVimStyle() {
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HighlightStyle result;
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result.comment = GetColor("${ansi.fg.purple}");
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result.scalar_literal = GetColor("${ansi.fg.red}");
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result.keyword = GetColor("${ansi.fg.green}");
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return result;
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}
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const Highlighter &
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HighlighterManager::getHighlighterFor(lldb::LanguageType language_type,
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llvm::StringRef path) const {
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Language *language = lldb_private::Language::FindPlugin(language_type, path);
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if (language && language->GetHighlighter())
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return *language->GetHighlighter();
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return m_default;
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}
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std::string Highlighter::Highlight(const HighlightStyle &options,
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llvm::StringRef line,
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llvm::Optional<size_t> cursor_pos,
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llvm::StringRef previous_lines) const {
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StreamString s;
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Highlight(options, line, cursor_pos, previous_lines, s);
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s.Flush();
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return s.GetString().str();
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}
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