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//===-- Manifest.cpp ------------------------------------------------------===//
//
// This source file is part of the Swift.org open source project
//
// Copyright (c) 2014 - 2015 Apple Inc. and the Swift project authors
// Licensed under Apache License v2.0 with Runtime Library Exception
//
// See http://swift.org/LICENSE.txt for license information
// See http://swift.org/CONTRIBUTORS.txt for the list of Swift project authors
//
//===----------------------------------------------------------------------===//
#include "llbuild/Ninja/Manifest.h"
#include "llbuild/Basic/LLVM.h"
#include "llvm/Support/FileSystem.h"
#include "llvm/Support/Path.h"
using namespace llbuild;
using namespace llbuild::ninja;
bool Rule::isValidParameterName(StringRef name) {
return name == "command" ||
name == "description" ||
name == "deps" ||
name == "depfile" ||
name == "generator" ||
name == "pool" ||
name == "restat" ||
name == "rspfile" ||
name == "rspfile_content";
}
Manifest::Manifest() {
// Create the built-in console pool, and add it to the pool map.
consolePool = new (getAllocator()) Pool("console");
assert(consolePool != nullptr);
if (consolePool)
consolePool->setDepth(1);
pools["console"] = consolePool;
// Create the built-in phony rule, and add it to the rule map.
phonyRule = new (getAllocator()) Rule("phony");
getRootScope().getRules()["phony"] = phonyRule;
}
bool Manifest::normalize_path(StringRef workingDirectory, SmallVectorImpl<char>& tmp){
auto separatorRef = llvm::sys::path::get_separator();
assert(separatorRef.size() == 1);
char slash = *separatorRef.data();
if (llvm::sys::fs::make_absolute(workingDirectory, tmp) != std::error_code()) {
return false;
}
if (tmp.size() == 0 || !llvm::sys::path::is_absolute(tmp)) {
return false;
}
// Ignore root "network" prefixes, such as "//net/".
StringRef tmpRef{tmp.data(), tmp.size()};
auto rootNameLength = llvm::sys::path::root_name(tmpRef).size();
auto begin = tmp.begin() + rootNameLength;
auto src_it = begin;
auto dst_it = begin;
auto end = tmp.end();
for (; src_it < end; ++src_it) {
if (LLVM_LIKELY(*src_it != slash)) {
*dst_it++ = *src_it;
continue;
}
if (dst_it == begin || *(dst_it-1) != slash) {
*dst_it++ = slash;
}
// Current fragment "/"
if (LLVM_UNLIKELY(src_it + 1 >= end)) {
break;
}
if (LLVM_LIKELY(*(src_it + 1) != '.')) {
continue;
}
// Current fragment "/."
if (src_it + 2 >= end) {
++src_it;
continue;
}
if (*(src_it + 2) != '.') {
if (*(src_it + 2) == slash) {
// Means "/./"
++src_it;
} else {
// "/.?"
*dst_it++ = *++src_it;
}
continue;
}
if (src_it + 3 < end && *(src_it + 3) != slash) {
continue;
}
// Move destination pointer to the previous directory.
if (dst_it - begin <= 1) {
// Already at the top.
} else {
for (dst_it -= 2; dst_it > begin; --dst_it) {
if (LLVM_UNLIKELY(*dst_it == slash)) {
++dst_it;
break;
}
}
if (dst_it == begin) {
*dst_it++ = slash;
}
}
if (src_it + 3 < end) {
src_it += 2;
} else {
break;
}
}
tmp.resize(dst_it - tmp.begin());
return true;
}
Node* Manifest::findNode(StringRef workingDirectory, StringRef path0) {
SmallString<256> absPathTmp = path0;
if (!normalize_path(workingDirectory, absPathTmp)) {
return nullptr;
}
auto it = nodes.find(absPathTmp);
if (it == nodes.end()) {
return nullptr;
}
return it->second;
}
Node* Manifest::findOrCreateNode(StringRef workingDirectory, StringRef path0) {
SmallString<256> absPathTmp = path0;
if (!normalize_path(workingDirectory, absPathTmp)) {
return nullptr;
}
StringRef path = absPathTmp;
auto& result = nodes[path];
if (!result)
result = new (getAllocator()) Node(path, path0);
return result;
}
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