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#include "CxxPreProcessor.h"
#include "file_logger.h"
#include <wx/regex.h>
CxxPreProcessor::CxxPreProcessor()
: m_options(0)
, m_maxDepth(-1)
, m_currentDepth(0)
{
}
CxxPreProcessor::~CxxPreProcessor() {}
void CxxPreProcessor::Parse(const wxFileName& filename, size_t options)
{
try {
m_options = options;
std::unordered_set<wxString> V;
CxxPreProcessorScanner scanner(filename, m_options, V);
// Remove the option so recursive scanner won't get it
m_options &= ~kLexerOpt_DontCollectMacrosDefinedInThisFile;
if(!scanner.IsNull()) {
scanner.Parse(this);
}
} catch(CxxLexerException& e) {
wxUnusedVar(e);
}
// Delete all the 'deleteOnExit' tokens
CxxPreProcessorToken::Map_t filteredMap;
filteredMap.reserve(m_tokens.size());
for(const auto& p : m_tokens) {
if(!p.second.deleteOnExit) {
filteredMap.insert(std::make_pair(p.first, p.second));
}
}
m_tokens.swap(filteredMap);
}
bool CxxPreProcessor::ExpandInclude(const wxFileName& currentFile, const wxString& includeStatement,
wxFileName& outFile)
{
// skip STL debug folders
if(includeStatement.StartsWith("<debug/")) {
return false;
}
wxString includeName = includeStatement;
includeName.Replace("\"", "");
includeName.Replace("<", "");
includeName.Replace(">", "");
// Try the current file's directory first
wxArrayString paths = m_includePaths;
paths.Insert(currentFile.GetPath(), 0);
if(m_noSuchFiles.count(includeStatement)) {
// wxPrintf("No such file hit\n");
return false;
}
auto iter = m_fileMapping.find(includeStatement);
if(iter != m_fileMapping.end()) {
// if this file has a mapped file, it means that we either
// already scanned it or could not find a match for it
// wxPrintf("File already been scanned\n");
return false;
}
for(size_t i = 0; i < paths.GetCount(); ++i) {
wxString tmpfile;
tmpfile << paths.Item(i) << "/" << includeName;
wxFileName fn(tmpfile);
if(fn.FileExists()) {
fn.MakeAbsolute();
m_fileMapping.insert({ includeStatement, fn.GetFullPath() });
outFile = fn;
return true;
}
}
// remember that we could not locate this include statement
m_noSuchFiles.insert(includeStatement);
m_fileMapping.insert(std::make_pair(includeStatement, wxString()));
return false;
}
void CxxPreProcessor::AddIncludePath(const wxString& path) { m_includePaths.Add(path); }
void CxxPreProcessor::AddDefinition(const wxString& def)
{
wxString macroName = def.BeforeFirst('=');
wxString macroValue = def.AfterFirst('=');
CxxPreProcessorToken token;
token.name = macroName;
token.value = macroValue;
m_tokens.insert(std::make_pair(macroName, token));
}
wxArrayString CxxPreProcessor::GetDefinitions() const
{
wxArrayString defs;
CxxPreProcessorToken::Map_t::const_iterator iter = m_tokens.begin();
for(; iter != m_tokens.end(); ++iter) {
wxString macro;
macro = iter->second.name;
if(!iter->second.value.IsEmpty()) {
macro << "=" << iter->second.value;
}
defs.Add(macro);
}
return defs;
}
wxString CxxPreProcessor::GetGxxCommand(const wxString& gxx, const wxString& filename) const
{
wxString command;
command << gxx << " -dM -E -D__WXMSW__ -D__cplusplus -fsyntax-only ";
for(size_t i = 0; i < m_includePaths.GetCount(); ++i) {
command << "-I" << m_includePaths.Item(i) << " ";
}
command << " - < " << filename;
return command;
}
void CxxPreProcessor::SetIncludePaths(const wxArrayString& includePaths)
{
m_includePaths.Clear();
m_includePaths.reserve(includePaths.size());
std::unordered_set<wxString> S;
S.reserve(includePaths.size());
for(size_t i = 0; i < includePaths.GetCount(); ++i) {
wxString path = includePaths.Item(i);
path.Trim().Trim(false);
if(path.IsEmpty()) {
continue;
}
if(S.count(path) == 0) {
m_includePaths.Add(path);
S.insert(path);
}
}
}
bool CxxPreProcessor::CanGoDeeper() const
{
if(m_maxDepth == -1)
return true;
return m_currentDepth < m_maxDepth;
}
void CxxPreProcessor::DecDepth()
{
m_currentDepth--;
if(m_currentDepth < 0) {
m_currentDepth = 0;
}
}
void CxxPreProcessor::IncDepth() { m_currentDepth++; }
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