daScript/src/ast/ast_parse.cpp at master · rburkholder/daScript · GitHub

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#include "daScript/misc/platform.h"

#include "daScript/ast/ast.h"

#include "daScript/ast/ast_expressions.h"

#include "../parser/parser_state.h"

typedef void * yyscan_t;

union YYSTYPE;

#define YY_EXTRA_TYPE das::DasParserState *

#define YY_NO_UNISTD_H

#include "../parser/lex.yy.h"

void das_yybegin(const char * str, uint32_t len, yyscan_t yyscanner);

int das_yyparse(yyscan_t yyscanner);

namespace das {

bool isUtf8Text ( const char * src, uint32_t length ) {

if ( length>=3 ) {

auto usrc = (const uint8_t *)src;

if ( usrc[0]==0xef && usrc[1]==0xbb && usrc[2]==0xbf) {

return true;

}

return false;

}

__forceinline bool isalphaE ( int ch ) {

return (ch>='a' && ch<='z') || (ch>='A' && ch<='Z');

}

__forceinline bool isalnumE ( int ch ) {

return (ch>='0' && ch<='9') || (ch>='a' && ch<='z') || (ch>='A' && ch<='Z');

}

void getAllRequireReq ( FileInfo * fi, const FileAccessPtr & access, vector<string> & req, das_set<FileInfo *> & collected ) {

const char * src = nullptr;

uint32_t length = 0;

fi->getSourceAndLength(src, length);

if ( isUtf8Text(src,length) ) { // skip utf8 byte order mark

src += 3;

length -= 3;

}

const char * src_end = src + length;

bool wb = true;

while ( src < src_end ) {

if ( src[0]=='"' ) {

src ++;

while ( src < src_end && src[0]!='"' ) {

src ++;

}

src ++;

wb = true;

continue;

} else if ( src[0]=='/' && src[1]=='/' ) {

while ( src < src_end && !(src[0]=='\n') ) {

src ++;

}

src ++;

wb = true;

continue;

} else if ( src[0]=='/' && src[1]=='*' ) {

int depth = 0;

while ( src < src_end ) {

if ( src[0]=='/' && src[1]=='*' ) {

depth ++;

src += 2;

} else if ( src[0]=='*' && src[1]=='/' ) {

if ( --depth==0 ) break;

src += 2;

} else {

src ++;

}

src +=2;

wb = true;

continue;

} else if ( wb && ((src+8)<src_end) && (src[0]=='r' || src[0]=='i') ) { // need space for 'require ' || 'include '

bool isReq = memcmp(src, "require", 7)==0;

bool isInc = !isReq && (memcmp(src, "include", 7)==0);

if ( isReq || isInc ) {

src += 7;

if ( isspace(src[0]) ) {

while ( src < src_end && isspace(src[0]) ) {

src ++;

}

if ( src >= src_end ) {

continue;

}

if ( src[0]=='_' || isalphaE(src[0]) || src[0] == '%' || src[0] == '.' || src[0]=='/' ) {

string mod;

mod += *src++;

while ( src < src_end && (isalnumE(src[0]) || src[0]=='_' || src[0]=='.' || src[0]=='/') ) {

mod += *src ++;

}

if ( isReq ) {

req.push_back(mod);

} else if ( isInc ) {

string incFileName = access->getIncludeFileName(fi->name,mod);

auto info = access->getFileInfo(incFileName);

if ( info ) {

if ( collected.find(info)==collected.end() ) {

collected.insert(info);

getAllRequireReq(info, access, req, collected);

}

continue;

} else {

wb = true;

goto nextChar;

}

} else {

wb = false;

goto nextChar;

}

} else {

goto nextChar;

}

nextChar:

wb = src[0]!='_' && (wb ? !isalnumE(src[0]) : !isalphaE(src[0]));

src ++;

}

vector<string> getAllRequire ( FileInfo * fi, const FileAccessPtr & access ) {

das_set<FileInfo *> collected;

vector<string> req;

getAllRequireReq(fi, access, req, collected);

return req;

}

string getModuleName ( const string & nameWithDots ) {

auto idx = nameWithDots.find_last_of("./");

if ( idx==string::npos ) return nameWithDots;

return nameWithDots.substr(idx+1);

}

string getModuleFileName ( const string & nameWithDots ) {

auto fname = nameWithDots;

// TODO: should we?

replace ( fname.begin(), fname.end(), '.', '/' );

return fname;

}

bool addRequirements(const string & fileName, ModuleGroup & libGroup, Module * mod, const FileAccessPtr & access, vector<string> & notAllowed, TextWriter * log, int tab ) {

if ( !access->isModuleAllowed(mod->name, fileName) ) {

notAllowed.push_back(mod->name);

if ( log ) {

*log << string(tab,'\t') << "dependency " << mod->name << " - NOT ALLOWED\n";

}

return false;

} else {

if ( log ) {

*log << string(tab,'\t') << "add dependency " << mod->name << "\n";

}

if ( libGroup.addModule(mod) ) {

tab ++;

for ( const auto & dep : mod->requireModule ) {

if ( !addRequirements(fileName, libGroup, dep.first, access, notAllowed, log, tab) ) {

return false;

}

tab --;

}

return true;

}

string getDasRoot ( void );

bool getPrerequisits ( const string & fileName,

const FileAccessPtr & access,

vector<ModuleInfo> & req,

vector<string> & missing,

vector<string> & circular,

vector<string> & notAllowed,

das_set<string> & dependencies,

ModuleGroup & libGroup,

TextWriter * log,

int tab,

bool allowPromoted ) {

if ( auto fi = access->getFileInfo(fileName) ) {

if ( log ) {

*log << string(tab,'\t') << "in " << fileName << "\n";

}

vector<string> ownReq = getAllRequire(fi, access);

for ( auto & mod : ownReq ) {

if ( log ) {

*log << string(tab,'\t') << "require " << mod << "\n";

}

auto module = Module::requireEx(mod, allowPromoted); // try native with that name

if ( !module ) {

auto info = access->getModuleInfo(mod, fileName);

if ( !info.moduleName.empty() ) {

mod = info.moduleName;

if ( log ) {

*log << string(tab,'\t') << " resolved as " << mod << "\n";

}

module = Module::requireEx(mod, allowPromoted); // try native with that name AGAIN (promoted?)

if ( !module ) {

auto it_r = find_if(req.begin(), req.end(), [&] ( const ModuleInfo & reqM ) {

return reqM.moduleName == mod;

});

if ( it_r==req.end() ) {

if ( dependencies.find(mod) != dependencies.end() ) {

// circular dependency

if ( log ) {

*log << string(tab,'\t') << "from " << fileName << " require " << mod << " - CIRCULAR DEPENDENCY\n";

}

circular.push_back(mod);

return false;

}

dependencies.insert(mod);

// module file name

if ( info.moduleName.empty() ) {

// request can't be translated to module name

if ( log ) {

*log << string(tab,'\t') << "from " << fileName << " require " << mod << " - MODULE INFO NOT FOUND\n";

}

missing.push_back(mod);

return false;

}

if ( !getPrerequisits(info.fileName, access, req, missing, circular, notAllowed, dependencies, libGroup, log, tab + 1, allowPromoted) ) {

return false;

}

if ( log ) {

*log << string(tab,'\t') << "from " << fileName << " require " << mod

<< " - ok, new module " << info.moduleName << " at " << info.fileName << "\n";

}

req.push_back(info);

} else {

if ( log ) {

*log << string(tab,'\t') << "from " << fileName << " require " << mod << " - already required\n";

}

} else {

if ( log ) {

*log << string(tab,'\t') << "from " << fileName << " require " << mod << " - shared, ok\n";

}

if ( !addRequirements(fileName, libGroup, module, access, notAllowed, log, tab) ) {

return false;

}

} else {

if ( log ) {

*log << string(tab,'\t') << "from " << fileName << " require " << mod << " - ok\n";

}

if ( !access->isModuleAllowed(module->name, fileName) ) {

notAllowed.push_back(module->name);

if ( log ) {

*log << string(tab,'\t') << "in " << fileName << " module " << module->name << " - NOT ALLOWED\n";

}

return false;

} else {

libGroup.addModule(module);

}

return true;

} else {

if ( log ) {

*log << string(tab,'\t') << "in " << fileName << " - FILE NOT FOUND\n"

<< string(tab+1,'\t') << "getDasRoot()=`" << getDasRoot() << "`\n";

}

missing.push_back(fileName);

return false;

}

// PARSER

extern "C" int64_t ref_time_ticks ();

extern "C" int get_time_usec (int64_t reft);

static DAS_THREAD_LOCAL int64_t totParse = 0;

static DAS_THREAD_LOCAL int64_t totInfer = 0;

static DAS_THREAD_LOCAL int64_t totOpt = 0;

static DAS_THREAD_LOCAL int64_t totM = 0;

ProgramPtr parseDaScript ( const string & fileName,

const FileAccessPtr & access,

TextWriter & logs,

ModuleGroup & libGroup,

bool exportAll,

bool isDep,

CodeOfPolicies policies ) {

ReuseCacheGuard rcg;

auto time0 = ref_time_ticks();

int err;

auto program = make_smart<Program>();

daScriptEnvironment::bound->g_Program = program;

daScriptEnvironment::bound->g_compilerLog = &logs;

program->promoteToBuiltin = false;

program->isCompiling = true;

program->isDependency = isDep;

program->needMacroModule = false;

program->policies = policies;

program->thisModuleGroup = &libGroup;

program->thisModuleName.clear();

libGroup.foreach([&](Module * pm){

program->library.addModule(pm);

return true;

},"*");

DasParserState parserState;

parserState.g_Access = access;

parserState.g_Program = program;

parserState.das_def_tab_size = daScriptEnvironment::bound->das_def_tab_size;

yyscan_t scanner = nullptr;

das_yylex_init_extra(&parserState, &scanner);

if ( auto fi = access->getFileInfo(fileName) ) {

parserState.g_FileAccessStack.push_back(fi);

const char * src = nullptr;

uint32_t len = 0;

fi->getSourceAndLength(src,len);

if (isUtf8Text(src, len)) {

das_yybegin(src + 3, len-3, scanner);

} else {

das_yybegin(src, len, scanner);

}

libGroup.foreach([&](Module * mod){

if ( mod->commentReader ) {

parserState.g_CommentReaders.push_back(mod->commentReader.get());

}

return true;

},"*");

} else {

program->error(fileName + " not found", "","",LineInfo());

program->isCompiling = false;

daScriptEnvironment::bound->g_Program.reset();

daScriptEnvironment::bound->g_compilerLog = nullptr;

return program;

}

err = das_yyparse(scanner);

das_yylex_destroy(scanner);

parserState = DasParserState();

totParse += get_time_usec(time0);

if ( err || program->failed() ) {

daScriptEnvironment::bound->g_Program.reset();

daScriptEnvironment::bound->g_compilerLog = nullptr;

sort(program->errors.begin(),program->errors.end());

program->isCompiling = false;

return program;

} else {

program->thisModule->doNotAllowUnsafe = !access->canModuleBeUnsafe(program->thisModule->name, fileName);

if ( policies.solid_context || program->options.getBoolOption("solid_context",false) ) {

program->thisModule->isSolidContext = true;

}

auto timeI = ref_time_ticks();

restartInfer: program->inferTypes(logs, libGroup);

if ( policies.macro_context_collect ) libGroup.collectMacroContexts();

totInfer += get_time_usec(timeI);

if ( !program->failed() ) {

program->buildAccessFlags(logs); // this is used by the lint pass

if ( program->patchAnnotations() ) {

goto restartInfer;

}

if ( !program->failed() ) {

if (!program->failed())

program->lint(logs, libGroup);

if ( policies.macro_context_collect ) libGroup.collectMacroContexts();

program->foldUnsafe();

auto timeO = ref_time_ticks();

if (program->getOptimize()) {

program->optimize(logs,libGroup);

} else {

program->buildAccessFlags(logs);

}

if ( policies.macro_context_collect ) libGroup.collectMacroContexts();

totOpt += get_time_usec(timeO);

if (!program->failed())

program->verifyAndFoldContracts();

if (!program->failed()) {

if ( program->thisModule->isModule || exportAll ) {

program->markModuleSymbolUse();

} else {

program->markExecutableSymbolUse();

program->removeUnusedSymbols();

}

if (!program->failed())

program->fixupAnnotations();

if (!program->failed())

program->deriveAliases(logs);

if (!program->failed())

program->allocateStack(logs);

if (!program->failed())

program->finalizeAnnotations();

if ( policies.macro_context_collect ) libGroup.collectMacroContexts();

}

if (!program->failed()) {

if (program->options.getBoolOption("log")) {

logs << *program;

}

daScriptEnvironment::bound->g_compilerLog = nullptr;

sort(program->errors.begin(), program->errors.end());

program->isCompiling = false;

if ( !program->failed() ) {

if ( program->needMacroModule ) {

if ( !program->thisModule->isModule ) { // checking if its a module

program->error("Module " + fileName + " is not setup correctly for macros",

"module Module_Name is required", "", LineInfo(),

CompilationError::module_does_not_have_a_name);

}

auto timeM = ref_time_ticks();

if (!program->failed())

program->markMacroSymbolUse();

if (!program->failed())

program->allocateStack(logs);

if (!program->failed())

program->makeMacroModule(logs);

totM += get_time_usec(timeM);

}

daScriptEnvironment::bound->g_Program.reset();

if ( policies.macro_context_collect ) libGroup.collectMacroContexts();

if ( program->options.getBoolOption("log_compile_time",false) ) {

auto dt = get_time_usec(time0) / 1000000.;

logs << "compiler took " << dt << ", " << fileName << "\n";

}

return program;

}

void addExtraDependency(

string modName,

string modFile,

vector<string> & missing,

vector<string> & circular,

vector<string> & notAllowed,

vector<ModuleInfo> & req,

das_set<string> & dependencies,

const FileAccessPtr & access,

ModuleGroup & libGroup,

CodeOfPolicies policies ) {

bool hasModule = false;

for ( auto & mod : req ) {

if ( mod.moduleName==modName) {

hasModule = true;

break;

}

if ( !hasModule && !modFile.empty() ) {

getPrerequisits(modFile, access, req, missing, circular, notAllowed,

dependencies, libGroup, nullptr, 1, !policies.ignore_shared_modules);

auto finfo = access->getFileInfo(modFile);

ModuleInfo info;

info.fileName = finfo->name;

info.importName = "";

info.moduleName = modName;

req.push_back(info);

}

ProgramPtr compileDaScript ( const string & fileName,

const FileAccessPtr & access,

TextWriter & logs,

ModuleGroup & libGroup,

bool exportAll,

CodeOfPolicies policies ) {

ReuseCacheGuard rcg;

auto time0 = ref_time_ticks();

totParse = 0;

totInfer = 0;

totOpt = 0;

totM = 0;

vector<ModuleInfo> req;

vector<string> missing, circular, notAllowed;

das_set<string> dependencies;

uint64_t preqT = 0;

if ( getPrerequisits(fileName, access, req, missing, circular, notAllowed,

dependencies, libGroup, nullptr, 1, !policies.ignore_shared_modules) ) {

preqT = get_time_usec(time0);

if ( policies.debugger ) {

addExtraDependency("debug", policies.debug_module, missing, circular, notAllowed, req, dependencies, access, libGroup, policies);

}

if ( policies.profiler ) {

addExtraDependency("profiler", policies.profile_module, missing, circular, notAllowed, req, dependencies, access, libGroup, policies);

}

for ( auto & mod : req ) {

if ( !libGroup.findModule(mod.moduleName) ) {

auto program = parseDaScript(mod.fileName, access, logs, libGroup, true, true, policies);

policies.threadlock_context |= program->options.getBoolOption("threadlock_context",false);

if ( program->failed() ) {

return program;

}

if ( policies.fail_on_lack_of_aot_export ) {

if ( !program->options.getBoolOption("no_aot",false) ) {

if ( program->thisModule->name.empty() ) {

program->error("Module " + mod.moduleName + " is not setup correctly for AOT",

"module " + mod.moduleName + " is required", "", LineInfo(),

CompilationError::module_does_not_have_a_name);

return program;

}

if ( program->thisModule->name.empty() ) {

program->thisModule->name = mod.moduleName;

}

if ( program->promoteToBuiltin ) {

bool regFromShar = false;

for ( auto & reqM : program->thisModule->requireModule ) {

if ( !reqM.first->builtIn ) {

program->error("Shared module " + program->thisModule->name + " has incorrect dependency type.",

"Can't require " + reqM.first->name + " because its not shared", "", LineInfo(),

CompilationError::module_required_from_shared);

regFromShar = true;

}

if ( regFromShar ) {

return program;

}

program->thisModule->promoteToBuiltin(access);

}

libGroup.addModule(program->thisModule.release());

program->library.foreach([&](Module * pm) -> bool {

if ( !pm->name.empty() && pm->name!="$" ) {

if ( !libGroup.findModule(pm->name) ) {

libGroup.addModule(pm);

}

return true;

}, "*");

}

auto res = parseDaScript(fileName, access, logs, libGroup, exportAll, false, policies);

policies.threadlock_context |= res->options.getBoolOption("threadlock_context",false);

if ( !res->failed() ) {

if ( res->options.getBoolOption("log_symbol_use") ) {

res->markSymbolUse(false, false, false, nullptr, &logs);

}

if ( policies.aot_module && (res->promoteToBuiltin || res->thisModule->isModule || exportAll) ) {

if (!res->failed()) {

if(exportAll)

res->markSymbolUse(false,true,true,nullptr);

else

res->markModuleSymbolUse();

}

if (!res->failed() && !exportAll)

res->removeUnusedSymbols();

if (!res->failed())

res->allocateStack(logs);

} else {

if (!res->failed())

res->markExecutableSymbolUse();

if ( res->getDebugger()) {

TextWriter ss;

for ( const auto & arq : res->allRequireDecl ) {

ss << get<1>(arq) << " ";

}

ss << fileName;

auto rtti_require = make_smart<Variable>();

rtti_require->name = "__rtti_require";

rtti_require->type = make_smart<TypeDecl>(Type::tString);

rtti_require->init = make_smart<ExprConstString>(ss.str());

rtti_require->init->type = make_smart<TypeDecl>(Type::tString);

rtti_require->used = true;

rtti_require->private_variable = true;

res->thisModule->addVariable(rtti_require);

}

if (!res->failed())

res->removeUnusedSymbols();

if (!res->failed())

res->allocateStack(logs);

}

if ( res->options.getBoolOption("log_require",false) ) {

TextWriter tw;

req.clear();

missing.clear();

circular.clear();

notAllowed.clear();

dependencies.clear();

getPrerequisits(fileName, access, req, missing, circular, notAllowed, dependencies, libGroup, &tw, 1, false);

logs << "module dependency graph:\n" << tw.str();

}

if ( !res->failed() ) {

auto hf = hash_blockz64((uint8_t *)fileName.c_str());

res->thisNamespace = "_anon_" + to_string(hf);

}

if ( res->options.getBoolOption("log_total_compile_time",false) ) {

auto totT = get_time_usec(time0);

logs << "compiler took " << (totT / 1000000.) << "\n"

<< "\trequire " << (preqT / 1000000.) << "\n"

<< "\tparse " << (totParse / 1000000.) << "\n"

<< "\tinfer " << (totInfer / 1000000.) << "\n"

<< "\toptimize " << (totOpt / 1000000.) << "\n"

<< "\tmacro " << (totM / 1000000.) << "\n"

;

}

return res;

} else {

TextWriter tw;

req.clear();

missing.clear();

circular.clear();

dependencies.clear();

getPrerequisits(fileName, access, req, missing, circular, notAllowed, dependencies, libGroup, &tw, 1, false);

auto program = make_smart<Program>();

program->policies = policies;

program->thisModuleGroup = &libGroup;

TextWriter err;

for ( auto & mis : missing ) {

err << "missing prerequisit " << mis << "\n";

}

for ( auto & mis : circular ) {

err << "circular dependency " << mis << "\n";

}

for ( auto & mis : notAllowed ) {

err << "module not allowed " << mis << "\n";

}

program->error(err.str(),"module dependency graph:\n" + tw.str(), "", LineInfo(),

CompilationError::module_not_found);

return program;

}

daScript/src/ast/ast_parse.cpp at master · rburkholder/daScript · GitHub

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