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#include "cmConfigure.h" // IWYU pragma: keep
#include <cstdlib>
#include <iostream>
#include <map>
#include <string>
#include <utility>
#include <vector>
#include "cmsys/FStream.hxx"
#include "cmSystemTools.h"
class CompileCommandParser
{
public:
class CommandType : public std::map<std::string, std::string>
{
public:
std::string const& at(std::string const& k) const
{
auto i = this->find(k);
if (i != this->end()) {
return i->second;
}
static std::string emptyString;
return emptyString;
}
};
using TranslationUnitsType = std::vector<CommandType>;
CompileCommandParser(std::istream& input)
: Input(input)
{
}
void Parse()
{
this->NextNonWhitespace();
this->ParseTranslationUnits();
}
const TranslationUnitsType& GetTranslationUnits()
{
return this->TranslationUnits;
}
private:
void ParseTranslationUnits()
{
this->TranslationUnits = TranslationUnitsType();
this->ExpectOrDie('[', "at start of compile command file\n");
do {
this->ParseTranslationUnit();
this->TranslationUnits.push_back(this->Command);
} while (this->Expect(','));
this->ExpectOrDie(']', "at end of array");
}
void ParseTranslationUnit()
{
this->Command = CommandType();
if (!this->Expect('{')) {
return;
}
if (this->Expect('}')) {
return;
}
do {
this->ParseString();
std::string name = this->String;
this->ExpectOrDie(':', "between name and value");
this->ParseString();
std::string value = this->String;
this->Command[name] = value;
} while (this->Expect(','));
this->ExpectOrDie('}', "at end of object");
}
void ParseString()
{
this->String = "";
if (!this->Expect('"')) {
return;
}
while (!this->Expect('"')) {
this->Expect('\\');
this->String.append(1, this->C);
this->Next();
}
}
bool Expect(char c)
{
if (this->C == c) {
this->NextNonWhitespace();
return true;
}
return false;
}
void ExpectOrDie(char c, const std::string& message)
{
if (!this->Expect(c)) {
this->ErrorExit(std::string("'") + c + "' expected " + message + ".");
}
}
void NextNonWhitespace()
{
do {
this->Next();
} while (this->IsWhitespace());
}
void Next()
{
this->C = char(this->Input.get());
if (this->Input.bad()) {
this->ErrorExit("Unexpected end of file.");
}
}
void ErrorExit(const std::string& message)
{
std::cout << "ERROR: " << message;
exit(1);
}
bool IsWhitespace()
{
return (this->C == ' ' || this->C == '\t' || this->C == '\n' ||
this->C == '\r');
}
char C;
TranslationUnitsType TranslationUnits;
CommandType Command;
std::string String;
std::istream& Input;
};
int main()
{
cmsys::ifstream file("compile_commands.json");
CompileCommandParser parser(file);
parser.Parse();
for (auto const& tu : parser.GetTranslationUnits()) {
std::vector<std::string> command;
cmSystemTools::ParseUnixCommandLine(tu.at("command").c_str(), command);
if (!cmSystemTools::RunSingleCommand(command, nullptr, nullptr, nullptr,
tu.at("directory").c_str())) {
std::cout << "ERROR: Failed to run command \"" << command[0] << "\""
<< std::endl;
exit(1);
}
}
return 0;
}
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