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Converted to use flex for tokenizing input so we can use an easier to

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understand recursive descent parser, we can easily handle more syntax
variety, and we can more easily change the configuration items accepted.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@15732 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Reid Spencer 2004-08-14 09:37:15 +00:00
parent a3f185577c
commit 68fb37ad67
9 changed files with 754 additions and 725 deletions
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48
tools/llvmc/CompilerDriver.cpp
View File

@ -29,8 +29,38 @@ namespace {
if ( dotpos = std::string::npos ) return "";
return fullName.substr(dotpos+1);
}
const char OutputSuffix[] = ".o";
void WriteAction(CompilerDriver::Action* a) {
std::cerr << a->program;
std::vector<std::string>::iterator I = a->args.begin();
while (I != a->args.end()) {
std::cerr << " " + *I;
++I;
}
std::cerr << "\n";
}
void DumpConfigData(CompilerDriver::ConfigData* cd, const std::string& type ){
std::cerr << "Configuration Data For '" << cd->langName << "' (" << type
<< ")\n";
std::cerr << "translator.preprocesses=" << cd->TranslatorPreprocesses
<< "\n";
std::cerr << "translator.groks_dash_O=" << cd->TranslatorGroksDashO << "\n";
std::cerr << "translator.optimizes=" << cd->TranslatorOptimizes << "\n";
std::cerr << "preprocessor.needed=" << cd->PreprocessorNeeded << "\n";
std::cerr << "PreProcessor: ";
WriteAction(&cd->PreProcessor);
std::cerr << "Translator: ";
WriteAction(&cd->Translator);
std::cerr << "Optimizer: ";
WriteAction(&cd->Optimizer);
std::cerr << "Assembler: ";
WriteAction(&cd->Assembler);
std::cerr << "Linker: ";
WriteAction(&cd->Linker);
}
}
@ -80,21 +110,13 @@ CompilerDriver::Action* CompilerDriver::GetAction(ConfigData* cd,
}
assert(pat != 0 && "Invalid command pattern");
Action* a = new Action(*pat);
a->args[pat->inputAt] = input;
a->args[pat->outputAt] = output;
if (pat->inputAt < a->args.size())
a->args[pat->inputAt] = input;
if (pat->outputAt < a->args.size())
a->args[pat->outputAt] = output;
return a;
}
void CompilerDriver::WriteAction(Action* a) {
std::cerr << a->program;
std::vector<std::string>::iterator I = a->args.begin();
while (I != a->args.end()) {
std::cerr << " " + *I;
++I;
}
std::cerr << "\n";
}
void CompilerDriver::DoAction(Action*a)
{
if (isVerbose)
@ -170,6 +192,8 @@ int CompilerDriver::execute(const InputList& InpList,
if (cd == 0)
error(std::string("Files of type '") + I->second +
"' are not recognized." );
if (isDebug)
DumpConfigData(cd,I->second);
// We have valid configuration data, now figure out where the output
// of compilation should end up.

6
tools/llvmc/CompilerDriver.h
View File

@ -58,6 +58,7 @@ namespace llvm {
/// @brief A structure to hold the action data for a given source
/// language.
struct Action {
Action() : inputAt(0) , outputAt(0) {}
std::string program; ///< The program to execve
std::vector<std::string> args; ///< Arguments to the program
size_t inputAt; ///< Argument index to insert input file
@ -65,6 +66,10 @@ namespace llvm {
};
struct ConfigData {
ConfigData() : TranslatorPreprocesses(false),
TranslatorOptimizes(false),
TranslatorGroksDashO(false),
PreprocessorNeeded(false) {}
std::string langName; ///< The name of the source language
bool TranslatorPreprocesses;///< Translator program will pre-process
bool TranslatorOptimizes; ///< Translator program will optimize too
@ -155,7 +160,6 @@ namespace llvm {
private:
Action* GetAction(ConfigData* cd, const std::string& input,
const std::string& output, Phases phase );
void WriteAction(Action* a);
void DoAction(Action* a);
/// @}

603
tools/llvmc/ConfigData.cpp
View File

@ -13,391 +13,282 @@
//===------------------------------------------------------------------------===
#include "ConfigData.h"
#include "ConfigLexer.h"
#include "CompilerDriver.h"
#include "Support/StringExtras.h"
#include <iostream>
#include <fstream>
using namespace llvm;
extern int ::Configlex();
namespace llvm {
ConfigLexerInfo ConfigLexerData;
InputProvider* ConfigLexerInput = 0;
unsigned ConfigLexerLine = 1;
InputProvider::~InputProvider() {}
void InputProvider::error(const std::string& msg) {
std::cerr << name << ":" << ConfigLexerLine << ": Error: " << msg << "\n";
errCount++;
}
void InputProvider::checkErrors() {
if (errCount > 0) {
std::cerr << name << " had " << errCount << " errors. Terminating.\n";
exit(errCount);
}
}
}
namespace {
// This array of strings provides the input for ".ll" files (LLVM Assembly)
// to the configuration file parser. This data is just "built-in" to
// llvmc so it doesn't have to be read from a configuration file.
static const char* LL_Data[] = {
"lang.name=LLVM Assembly",
"lang.translator.preprocesses=false",
"lang.translator.optimizes=No",
"lang.translator.groks_dash_O=No",
"lang.preprocessor.needed=0",
"preprocessor.prog=",
"preprocessor.args=",
"translator.prog=llvm-as",
"translator.args=@in@ -o @out@",
"optimizer.prog=opt",
"optimizer.args=@in@ -o @out@",
"assembler.prog=llc",
"assembler.args=@in@ -o @out@",
"linker.prog=llvm-link",
"linker.args=@in@ -o @out@"
};
class FileInputProvider : public InputProvider {
public:
FileInputProvider(const std::string & fname)
: InputProvider(fname)
, F(fname.c_str()) {
ConfigLexerInput = this;
}
virtual ~FileInputProvider() { F.close(); ConfigLexerInput = 0; }
virtual unsigned read(char *buffer, unsigned max_size) {
if (F.good()) {
F.read(buffer,max_size);
if ( F.gcount() ) return F.gcount() - 1;
}
return 0;
}
// This array of strings provides the input for ".st" files (Stacker).
static const char* ST_Data[] = {
"lang.name=Stacker",
"lang.translator.preprocesses=false",
"lang.translator.optimizes=true",
"lang.translator.groks_dash_O=0",
"lang.preprocessor.needed=0",
"preprocessor.prog=cp",
"preprocessor.args=@in@ @out@",
"translator.prog=stkrc",
"translator.args=@in@ -o @out@ -S 2048",
"optimizer.prog=opt",
"optimizer.args=@in@ -o @out@",
"assembler.prog=llc",
"assembler.args=@in@ -o @out@",
"linker.prog=llvm-link",
"linker.args=@in@ -o @out@"
};
bool okay() { return F.good(); }
private:
std::ifstream F;
};
class InputProvider {
public:
virtual bool getLine(std::string& line) = 0;
virtual void error(const std::string& msg) = 0;
virtual bool errorOccurred() = 0;
};
struct ParseContext
{
int token;
InputProvider* provider;
CompilerDriver::ConfigData* confDat;
CompilerDriver::Action* action;
class StaticInputProvider : public InputProvider {
public:
StaticInputProvider(const char *data[], size_t count,
const std::string& nam) {
TheData = data;
limit = count;
where = 0;
name = nam;
errCount = 0;
}
virtual ~StaticInputProvider() {}
virtual bool getLine(std::string& line) {
if ( where >= limit ) return false;
line = TheData[where++];
return true;
int next() { return token = Configlex(); }
bool next_is_real() {
token = Configlex();
return (token != EOLTOK) && (token != ERRORTOK) && (token != 0);
}
virtual void error(const std::string& msg) {
std::cerr << name << ":" << where << ": Error: " << msg << "\n";
errCount++;
void eatLineRemnant() {
while (next_is_real()) ;
}
virtual bool errorOccurred() { return errCount > 0; };
void error(const std::string& msg, bool skip = true) {
provider->error(msg);
if (skip)
eatLineRemnant();
}
private:
const char**TheData;
size_t limit;
size_t where;
std::string name;
size_t errCount;
};
std::string parseName() {
std::string result;
if (next() == EQUALS) {
while (next_is_real()) {
switch (token ) {
case STRING :
case OPTION :
result += ConfigLexerData.StringVal + " ";
break;
default:
error("Invalid name");
break;
}
}
if (result.empty())
error("Name exepected");
else
result.erase(result.size()-1,1);
} else
error("= expected");
return result;
}
inline bool recognize(const char*& p, const char*token) {
while (*p == *token && *token != '\0')
++token, p++;
return *token == '\0' && ((*p == '\0') || ( *p == '.' ) || (*p == '='));
}
bool parseBoolean() {
bool result = true;
if (next() == EQUALS) {
if (next() == FALSETOK) {
result = false;
} else if (token != TRUETOK) {
error("Expecting boolean value");
return false;
}
if (next() != EOLTOK && token != 0) {
error("Extraneous tokens after boolean");
}
}
else
error("Expecting '='");
return result;
}
inline bool getBoolean(const std::string& value) {
switch (value[0]) {
case 't':
case 'T':
case '1':
case 'y':
case 'Y':
return true;
default :
return false;
}
return false;
}
void parseLang() {
if ( next() == NAME ) {
confDat->langName = parseName();
} else if (token == TRANSLATOR) {
switch (next()) {
case PREPROCESSES:
confDat->TranslatorPreprocesses = parseBoolean();
break;
case OPTIMIZES:
confDat->TranslatorOptimizes = parseBoolean();
break;
case GROKS_DASH_O:
confDat->TranslatorGroksDashO = parseBoolean();
break;
default:
error("Invalid lang.translator identifier");
break;
}
}
else if (token == PREPROCESSOR) {
if (next() == NEEDED)
confDat->PreprocessorNeeded = parseBoolean();
}
else {
error("Expecting valid identifier after 'lang.'");
}
}
inline void skipWhitespace( size_t& pos, const std::string& line ) {
while (pos < line.size() && (
line[pos] == ' ' || // Space
line[pos] == '\t' || // Horizontal Tab
line[pos] == '\n' || // New Line
line[pos] == '\v' || // Vertical Tab
line[pos] == '\f' || // Form Feed
line[pos] == '\r') // Carriate Return
)
pos++;
}
inline void parseArgs(CompilerDriver::Action& pat,
const std::string& value,
InputProvider& provider )
{
const char* p = value.c_str();
const char* argStart = p;
while (*p != '\0') {
switch (*p) {
case ' ':
if (argStart != p)
pat.args.push_back(std::string(argStart, p-argStart));
argStart = ++p;
break;
case '@' :
{
if (argStart != p)
pat.args.push_back(std::string(argStart,p-argStart));
const char* token = ++p;
while (*p != '@' && *p != 0)
p++;
if ( *p != '@' ) {
provider.error("Unterminated substitution token");
return;
void parseCommand(CompilerDriver::Action& action) {
if (next() == EQUALS) {
next();
if (token == EOLTOK) {
// no value (valid)
action.program.clear();
action.args.clear();
action.inputAt = 0;
action.outputAt = 0;
} else {
if (token == STRING || token == OPTION) {
action.program = ConfigLexerData.StringVal;
} else {
p++;
bool legal = false;
switch (token[0]) {
case 'i':
if (token[1] == 'n' && token[2] == '@' ) {
pat.inputAt = pat.args.size();
pat.args.push_back("in");
legal = true;
argStart = p;
}
break;
case 'o':
if (token[1] == 'u' && token[2] == 't' && token[3] == '@') {
pat.outputAt = pat.args.size();
pat.args.push_back("out");
legal = true;
argStart = p;
}
break;
default:
break;
}
if (!legal) {
provider.error("Invalid substitution token");
return;
}
error("Expecting a program name");
}
while (next_is_real()) {
if (token == STRING || token == OPTION)
action.args.push_back(ConfigLexerData.StringVal);
else if (token == IN_SUBST) {
action.inputAt = action.args.size();
action.args.push_back("in");
} else if (token == OUT_SUBST) {
action.outputAt = action.args.size();
action.args.push_back("out");
} else
error("Expecting a program argument", false);
}
}
break;
default :
p++;
break;
}
}
void parsePreProcessor() {
if (next() != COMMAND) {
error("Expecting 'command'");
return;
}
parseCommand(confDat->PreProcessor);
}
void parseTranslator() {
if (next() != COMMAND) {
error("Expecting 'command'");
return;
}
parseCommand(confDat->Translator);
}
void parseOptimizer() {
if (next() != COMMAND) {
error("Expecting 'command'");
return;
}
parseCommand(confDat->Optimizer);
}
void parseAssembler() {
if (next() != COMMAND) {
error("Expecting 'command'");
return;
}
parseCommand(confDat->Assembler);
}
void parseLinker() {
if (next() != COMMAND) {
error("Expecting 'command'");
return;
}
parseCommand(confDat->Linker);
}
void parseAssignment() {
switch (token) {
case LANG: return parseLang();
case PREPROCESSOR: return parsePreProcessor();
case TRANSLATOR: return parseTranslator();
case OPTIMIZER: return parseOptimizer();
case ASSEMBLER: return parseAssembler();
case LINKER: return parseLinker();
case EOLTOK: break; // just ignore
case ERRORTOK:
default:
error("Invalid top level configuration item identifier");
}
}
void parseFile() {
while ( next() != 0 ) {
parseAssignment();
}
provider->checkErrors();
}
};
void
ParseConfigData(InputProvider& provider, CompilerDriver::ConfigData& confDat) {
ParseContext ctxt;
ctxt.token = 0;
ctxt.provider = &provider;
ctxt.confDat = &confDat;
ctxt.action = 0;
ctxt.parseFile();
}
}
CompilerDriver::ConfigData*
ParseConfigData(InputProvider& provider) {
std::string line;
CompilerDriver::ConfigData data;
while ( provider.getLine(line) ) {
// Check line length first
size_t lineLen = line.size();
if (lineLen > 4096)
provider.error("length of input line (" + utostr(lineLen) +
") is too long");
// First, skip whitespace
size_t stPos = 0;
skipWhitespace(stPos, line);
// See if there's a hash mark. It and everything after it is
// ignored so lets delete that now.
size_t hashPos = line.find('#');
if (hashPos != std::string::npos)
line.erase(hashPos);
// Make sure we have something left to parse
if (line.size() == 0)
continue; // ignore full-line comment or whitespace line
// Find the equals sign
size_t eqPos = line.find('=');
if (eqPos == std::string::npos)
provider.error("Configuration directive is missing an =");
// extract the item name
std::string name(line, stPos, eqPos-stPos);
// directives without names are illegal
if (name.empty())
provider.error("Configuration directive name is empty");
// Skip whitespace in the value
size_t valPos = eqPos + 1;
skipWhitespace(valPos, line);
// Skip white space at end of value
size_t endPos = line.length() - 1;
while (line[endPos] == ' ')
endPos--;
// extract the item value
std::string value(line, valPos, endPos-valPos+1);
// Get the configuration item as a char pointer
const char*p = name.c_str();
// Indicate we haven't found an invalid item yet.
bool invalidItem = false;
// Parse the contents by examining first character and
// using the recognize function strategically
switch (*p++) {
case 'l' :
// could it be "lang."
if (*p == 'a') { // "lang." ?
if (recognize(p,"ang")) {
p++;
switch (*p++) {
case 'n':
if (recognize(p,"ame"))
data.langName = value;
else
invalidItem = true;
break;
case 't':
if (recognize(p,"ranslator")) {
p++;
if (recognize(p,"preprocesses"))
data.TranslatorPreprocesses = getBoolean(value);
else if (recognize(p, "optimizes"))
data.TranslatorOptimizes = getBoolean(value);
else if (recognize(p, "groks_dash_O"))
data.TranslatorGroksDashO = getBoolean(value);
else
invalidItem = true;
}
else
invalidItem = true;
break;
case 'p':
if (recognize(p,"reprocessor")) {
p++;
if (recognize(p,"needed")) {
data.PreprocessorNeeded = getBoolean(value);
} else
invalidItem = true;
}
else
invalidItem = true;
break;
default:
invalidItem = true;
break;
}
}
} else if (*p == 'i') { // "linker." ?
if (recognize(p,"inker")) {
p++;
if (recognize(p,"prog"))
data.Linker.program = value;
else if (recognize(p,"args"))
parseArgs(data.Linker,value,provider);
else
invalidItem = true;
}
else
invalidItem = true;
} else {
invalidItem = true;
}
break;
case 'p' :
if (*p == 'r') { // "preprocessor." ?
if (recognize(p, "reprocessor")) {
p++;
if (recognize(p,"prog"))
data.PreProcessor.program = value;
else if (recognize(p,"args"))
parseArgs(data.PreProcessor,value,provider);
else
invalidItem = true;
} else
invalidItem = true;
} else {
invalidItem = true;
}
break;
case 't' :
if (*p == 'r') { // "translator." ?
if (recognize(p, "ranslator")) {
p++;
if (recognize(p,"prog"))
data.Translator.program = value;
else if (recognize(p,"args"))
parseArgs(data.Translator,value,provider);
else
invalidItem = true;
} else
invalidItem = true;
} else {
invalidItem = true;
}
break;
case 'o' :
if (*p == 'p') { // "optimizer." ?
if (recognize(p, "ptimizer")) {
p++;
if (recognize(p,"prog"))
data.Optimizer.program = value;
else if (recognize(p,"args"))
parseArgs(data.Optimizer,value,provider);
else
invalidItem = true;
} else
invalidItem = true;
} else {
invalidItem = true;
}
break;
case 'a' :
if (*p == 's') { // "assembler." ?
if (recognize(p, "ssembler")) {
p++;
if (recognize(p,"prog"))
data.Assembler.program = value;
else if (recognize(p,"args"))
parseArgs(data.Assembler,value,provider);
else
invalidItem = true;
} else
invalidItem = true;
} else {
invalidItem = true;
}
break;
LLVMC_ConfigDataProvider::ReadConfigData(const std::string& ftype) {
CompilerDriver::ConfigData* result = 0;
if (configDir.empty()) {
FileInputProvider fip( std::string("/etc/llvm/") + ftype );
if (!fip.okay()) {
fip.error("Configuration for '" + ftype + "' is not available.");
fip.checkErrors();
}
else {
result = new CompilerDriver::ConfigData();
ParseConfigData(fip,*result);
}
} else {
FileInputProvider fip( configDir + "/" + ftype );
if (!fip.okay()) {
fip.error("Configuration for '" + ftype + "' is not available.");
fip.checkErrors();
}
else {
result = new CompilerDriver::ConfigData();
ParseConfigData(fip,*result);
}
if (invalidItem)
provider.error("Invalid configuration item: " + line.substr(stPos, eqPos-stPos));
}
return new CompilerDriver::ConfigData(data);
}
CompilerDriver::ConfigData*
ReadConfigData(const std::string& ftype) {
if ( ftype == "ll" ) {
StaticInputProvider sip(LL_Data, sizeof(LL_Data)/sizeof(LL_Data[0]),
"LLVM Assembly (internal)");
return ParseConfigData(sip);
} else if (ftype == "st") {
StaticInputProvider sip(ST_Data, sizeof(ST_Data)/sizeof(ST_Data[0]),
"Stacker (internal)");
return ParseConfigData(sip);
}
return 0;
}
return result;
}
LLVMC_ConfigDataProvider::LLVMC_ConfigDataProvider()

3
tools/llvmc/ConfigData.h
View File

@ -42,6 +42,9 @@ namespace llvm {
/// @brief Allow the configuration directory to be set
virtual void setConfigDir(const std::string& dirName) { configDir = dirName; }
private:
CompilerDriver::ConfigData* ReadConfigData(const std::string& ftype);
/// @}
/// @name Data
/// @{

77
tools/llvmc/ConfigLexer.h Normal file
View File

@ -0,0 +1,77 @@
//===- ConfigLexer.h - ConfigLexer Declarations -----------------*- C++ -*-===//
//
// The LLVM Compiler Infrastructure
//
// This file was developed by Reid Spencer and is distributed under the
// University of Illinois Open Source License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
//
// This file declares the types and data needed by ConfigLexer.l
//
//===------------------------------------------------------------------------===
#ifndef LLVM_TOOLS_LLVMC_CONFIGLEXER_H
#define LLVM_TOOLS_LLVMC_CONFIGLEXER_H
#include <string>
#include <istream>
namespace llvm {
struct ConfigLexerInfo
{
int64_t IntegerVal;
std::string StringVal;
};
extern ConfigLexerInfo ConfigLexerData;
extern unsigned ConfigLexerLine;
class InputProvider {
public:
InputProvider(const std::string& nm) {
name = nm;
errCount = 0;
}
virtual ~InputProvider();
virtual unsigned read(char *buf, unsigned max_size) = 0;
virtual void error(const std::string& msg);
virtual void checkErrors();
private:
std::string name;
unsigned errCount;
};
extern InputProvider* ConfigLexerInput;
enum ConfigLexerTokens {
EOFTOK = 0, ///< Returned by Configlex when we hit end of file
EOLTOK, ///< End of line
ERRORTOK, ///< Error token
OPTION, ///< A command line option
SEPARATOR, ///< A configuration item separator
EQUALS, ///< The equals sign, =
TRUETOK, ///< A boolean true value (true/yes/on)
FALSETOK, ///< A boolean false value (false/no/off)
INTEGER, ///< An integer
STRING, ///< A quoted string
IN_SUBST, ///< The input substitution item @in@
OUT_SUBST, ///< The output substitution item @out@
LANG, ///< The item "lang" (and case variants)
PREPROCESSOR, ///< The item "preprocessor" (and case variants)
TRANSLATOR, ///< The item "translator" (and case variants)
OPTIMIZER, ///< The item "optimizer" (and case variants)
ASSEMBLER, ///< The item "assembler" (and case variants)
LINKER, ///< The item "linker" (and case variants)
NAME, ///< The item "name" (and case variants)
NEEDED, ///< The item "needed" (and case variants)
COMMAND, ///< The item "command" (and case variants)
PREPROCESSES, ///< The item "preprocesses" (and case variants)
GROKS_DASH_O, ///< The item "groks_dash_O" (and case variants)
OPTIMIZES, ///< The item "optimizes" (and case variants)
};
}
#endif

135
tools/llvmc/ConfigLexer.l Normal file
View File

@ -0,0 +1,135 @@
/*===- ConfigLexer.l - Scanner for CompilerDriver Config Files -*- C++ -*--===//
//
// The LLVM Compiler Infrastructure
//
// This file was developed by Reid Spencer and is distributed under the
// University of Illinois Open Source License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
//
// This file implements the flex scanner for configuration files for the
// llvmc CompilerDriver.
//
//===----------------------------------------------------------------------===*/
%option prefix="Config"
%option yylineno
%option nostdinit
%option never-interactive
%option batch
%option noyywrap
%option nodefault
%option 8bit
%option outfile="ConfigLexer.cpp"
%option ecs
%option noreject
%option noyymore
%array
%{
#include "ConfigLexer.h"
#define YY_INPUT(buf,result,max_size) \
{ \
assert(ConfigLexerInput != 0 && "Oops"); \
result = ConfigLexerInput->read(buf,max_size); \
if (result == 0 ) result = YY_NULL; \
}
using namespace llvm;
/* Conversion of text ints to binary */
static int64_t IntToVal(const char *Buffer) {
int64_t Result = 0;
for (; *Buffer; Buffer++) {
int64_t OldRes = Result;
Result *= 10;
Result += *Buffer-'0';
}
return Result;
}
bool in_value = false;
%}
LANG lang|Lang|LANG
PREPROCESSOR preprocessor|PreProcessor|PREPROCESSOR
TRANSLATOR translator|Translator|TRANSLATOR
OPTIMIZER optimizer|Optimizer|OPTIMIZER
ASSEMBLER assembler|Assembler|ASSEMBLER
LINKER linker|Linker|LINKER
NAME name|Name|NAME
NEEDED needed|Needed|NEEDED
COMMAND command|Command|COMMAND
PREPROCESSES preprocesses|PreProcesses|PREPROCESSES
GROKS_DASH_O groks_dash_O|Groks_Dash_O|GROKS_DASH_O
OPTIMIZES optimizes|Optimizes|OPTIMIZES
Comment \#[^\n]*
NewLine \n
White [ \t]*
Option [-A-Za-z0-9_:%+/\\|,]*
Sep \.
Eq \=
String \"[^\"]*\"
Integer [-+]?[0-9]+
True true|True|TRUE
False false|False|FALSE
On on|On|ON
Off off|Off|OFF
Yes yes|Yes|YES
No no|No|NO
%%
{NewLine} { in_value = false; ConfigLexerLine++; return EOLTOK; }
{Comment} { /* Ignore comments */ }
{White} { /* Ignore whitespace */ }
{LANG} { if (in_value) { ConfigLexerData.StringVal = "lang";
return OPTION; } else return LANG; }
{PREPROCESSOR} { if (in_value) { ConfigLexerData.StringVal = "preprocessor";
return OPTION; } else return PREPROCESSOR; }
{TRANSLATOR} { if (in_value) { ConfigLexerData.StringVal = "translator";
return OPTION; } else return TRANSLATOR; }
{OPTIMIZER} { if (in_value) { ConfigLexerData.StringVal = "optimizer";
return OPTION; } else return OPTIMIZER; }
{ASSEMBLER} { if (in_value) { ConfigLexerData.StringVal = "assembler";
return OPTION; } else return ASSEMBLER; }
{LINKER} { if (in_value) { ConfigLexerData.StringVal = "linker";
return OPTION; } else return LINKER; }
{NAME} { if (in_value) { ConfigLexerData.StringVal = "name";
return OPTION; } else return NAME; }
{NEEDED} { if (in_value) { ConfigLexerData.StringVal = "needed";
return OPTION; } else return NEEDED; }
{COMMAND} { if (in_value) { ConfigLexerData.StringVal = "command";
return OPTION; } else return COMMAND; }
{PREPROCESSES} { if (in_value) { ConfigLexerData.StringVal = "preprocesses";
return OPTION; } else return PREPROCESSES; }
{GROKS_DASH_O} { if (in_value) { ConfigLexerData.StringVal = "groks_dash_O";
return OPTION; } else return GROKS_DASH_O; }
{OPTIMIZES} { if (in_value) { ConfigLexerData.StringVal = "optimizes";
return OPTION; } else return OPTIMIZES; }
{Sep} { if (in_value) { ConfigLexerData.StringVal = yytext;
return OPTION; } }
@in@ { if (in_value) return IN_SUBST; else return ERRORTOK; }
@out@ { if (in_value) return OUT_SUBST; else return ERRORTOK; }
{True} { if (in_value) return TRUETOK; else return ERRORTOK; }
{On} { if (in_value) return TRUETOK; else return ERRORTOK; }
{Yes} { if (in_value) return TRUETOK; else return ERRORTOK; }
{False} { if (in_value) return FALSETOK; else return ERRORTOK; }
{Off} { if (in_value) return FALSETOK; else return ERRORTOK; }
{No} { if (in_value) return FALSETOK; else return ERRORTOK; }
{Eq} { in_value = true; return EQUALS; }
{Option} { ConfigLexerData.StringVal = yytext; return OPTION; }
{Integer} { ConfigLexerData.IntegerVal = IntToVal(yytext); return INTEGER; }
{String} { yytext[yyleng-1] = 0; // nuke end quote
ConfigLexerData.StringVal = yytext+1; // Nuke start quote
return STRING;
}
%%

603
tools/llvmc/Configuration.cpp
View File

@ -13,391 +13,282 @@
//===------------------------------------------------------------------------===
#include "ConfigData.h"
#include "ConfigLexer.h"
#include "CompilerDriver.h"
#include "Support/StringExtras.h"
#include <iostream>
#include <fstream>
using namespace llvm;
extern int ::Configlex();
namespace llvm {
ConfigLexerInfo ConfigLexerData;
InputProvider* ConfigLexerInput = 0;
unsigned ConfigLexerLine = 1;
InputProvider::~InputProvider() {}
void InputProvider::error(const std::string& msg) {
std::cerr << name << ":" << ConfigLexerLine << ": Error: " << msg << "\n";
errCount++;
}
void InputProvider::checkErrors() {
if (errCount > 0) {
std::cerr << name << " had " << errCount << " errors. Terminating.\n";
exit(errCount);
}
}
}
namespace {
// This array of strings provides the input for ".ll" files (LLVM Assembly)
// to the configuration file parser. This data is just "built-in" to
// llvmc so it doesn't have to be read from a configuration file.
static const char* LL_Data[] = {
"lang.name=LLVM Assembly",
"lang.translator.preprocesses=false",
"lang.translator.optimizes=No",
"lang.translator.groks_dash_O=No",
"lang.preprocessor.needed=0",
"preprocessor.prog=",
"preprocessor.args=",
"translator.prog=llvm-as",
"translator.args=@in@ -o @out@",
"optimizer.prog=opt",
"optimizer.args=@in@ -o @out@",
"assembler.prog=llc",
"assembler.args=@in@ -o @out@",
"linker.prog=llvm-link",
"linker.args=@in@ -o @out@"
};
class FileInputProvider : public InputProvider {
public:
FileInputProvider(const std::string & fname)
: InputProvider(fname)
, F(fname.c_str()) {
ConfigLexerInput = this;
}
virtual ~FileInputProvider() { F.close(); ConfigLexerInput = 0; }
virtual unsigned read(char *buffer, unsigned max_size) {
if (F.good()) {
F.read(buffer,max_size);
if ( F.gcount() ) return F.gcount() - 1;
}
return 0;
}
// This array of strings provides the input for ".st" files (Stacker).
static const char* ST_Data[] = {
"lang.name=Stacker",
"lang.translator.preprocesses=false",
"lang.translator.optimizes=true",
"lang.translator.groks_dash_O=0",
"lang.preprocessor.needed=0",
"preprocessor.prog=cp",
"preprocessor.args=@in@ @out@",
"translator.prog=stkrc",
"translator.args=@in@ -o @out@ -S 2048",
"optimizer.prog=opt",
"optimizer.args=@in@ -o @out@",
"assembler.prog=llc",
"assembler.args=@in@ -o @out@",
"linker.prog=llvm-link",
"linker.args=@in@ -o @out@"
};
bool okay() { return F.good(); }
private:
std::ifstream F;
};
class InputProvider {
public:
virtual bool getLine(std::string& line) = 0;
virtual void error(const std::string& msg) = 0;
virtual bool errorOccurred() = 0;
};
struct ParseContext
{
int token;
InputProvider* provider;
CompilerDriver::ConfigData* confDat;
CompilerDriver::Action* action;
class StaticInputProvider : public InputProvider {
public:
StaticInputProvider(const char *data[], size_t count,
const std::string& nam) {
TheData = data;
limit = count;
where = 0;
name = nam;
errCount = 0;
}
virtual ~StaticInputProvider() {}
virtual bool getLine(std::string& line) {
if ( where >= limit ) return false;
line = TheData[where++];
return true;
int next() { return token = Configlex(); }
bool next_is_real() {
token = Configlex();
return (token != EOLTOK) && (token != ERRORTOK) && (token != 0);
}
virtual void error(const std::string& msg) {
std::cerr << name << ":" << where << ": Error: " << msg << "\n";
errCount++;
void eatLineRemnant() {
while (next_is_real()) ;
}
virtual bool errorOccurred() { return errCount > 0; };
void error(const std::string& msg, bool skip = true) {
provider->error(msg);
if (skip)
eatLineRemnant();
}
private:
const char**TheData;
size_t limit;
size_t where;
std::string name;
size_t errCount;
};
std::string parseName() {
std::string result;
if (next() == EQUALS) {
while (next_is_real()) {
switch (token ) {
case STRING :
case OPTION :
result += ConfigLexerData.StringVal + " ";
break;
default:
error("Invalid name");
break;
}
}
if (result.empty())
error("Name exepected");
else
result.erase(result.size()-1,1);
} else
error("= expected");
return result;
}
inline bool recognize(const char*& p, const char*token) {
while (*p == *token && *token != '\0')
++token, p++;
return *token == '\0' && ((*p == '\0') || ( *p == '.' ) || (*p == '='));
}
bool parseBoolean() {
bool result = true;
if (next() == EQUALS) {
if (next() == FALSETOK) {
result = false;
} else if (token != TRUETOK) {
error("Expecting boolean value");
return false;
}
if (next() != EOLTOK && token != 0) {
error("Extraneous tokens after boolean");
}
}
else
error("Expecting '='");
return result;
}
inline bool getBoolean(const std::string& value) {
switch (value[0]) {
case 't':
case 'T':
case '1':
case 'y':
case 'Y':
return true;
default :
return false;
}
return false;
}
void parseLang() {
if ( next() == NAME ) {
confDat->langName = parseName();
} else if (token == TRANSLATOR) {
switch (next()) {
case PREPROCESSES:
confDat->TranslatorPreprocesses = parseBoolean();
break;
case OPTIMIZES:
confDat->TranslatorOptimizes = parseBoolean();
break;
case GROKS_DASH_O:
confDat->TranslatorGroksDashO = parseBoolean();
break;
default:
error("Invalid lang.translator identifier");
break;
}
}
else if (token == PREPROCESSOR) {
if (next() == NEEDED)
confDat->PreprocessorNeeded = parseBoolean();
}
else {
error("Expecting valid identifier after 'lang.'");
}
}
inline void skipWhitespace( size_t& pos, const std::string& line ) {
while (pos < line.size() && (
line[pos] == ' ' || // Space
line[pos] == '\t' || // Horizontal Tab
line[pos] == '\n' || // New Line
line[pos] == '\v' || // Vertical Tab
line[pos] == '\f' || // Form Feed
line[pos] == '\r') // Carriate Return
)
pos++;
}
inline void parseArgs(CompilerDriver::Action& pat,
const std::string& value,
InputProvider& provider )
{
const char* p = value.c_str();
const char* argStart = p;
while (*p != '\0') {
switch (*p) {
case ' ':
if (argStart != p)
pat.args.push_back(std::string(argStart, p-argStart));
argStart = ++p;
break;
case '@' :
{
if (argStart != p)
pat.args.push_back(std::string(argStart,p-argStart));
const char* token = ++p;
while (*p != '@' && *p != 0)
p++;
if ( *p != '@' ) {
provider.error("Unterminated substitution token");
return;
void parseCommand(CompilerDriver::Action& action) {
if (next() == EQUALS) {
next();
if (token == EOLTOK) {
// no value (valid)
action.program.clear();
action.args.clear();
action.inputAt = 0;
action.outputAt = 0;
} else {
if (token == STRING || token == OPTION) {
action.program = ConfigLexerData.StringVal;
} else {
p++;
bool legal = false;
switch (token[0]) {
case 'i':
if (token[1] == 'n' && token[2] == '@' ) {
pat.inputAt = pat.args.size();
pat.args.push_back("in");
legal = true;
argStart = p;
}
break;
case 'o':
if (token[1] == 'u' && token[2] == 't' && token[3] == '@') {
pat.outputAt = pat.args.size();
pat.args.push_back("out");
legal = true;
argStart = p;
}
break;
default:
break;
}
if (!legal) {
provider.error("Invalid substitution token");
return;
}
error("Expecting a program name");
}
while (next_is_real()) {
if (token == STRING || token == OPTION)
action.args.push_back(ConfigLexerData.StringVal);
else if (token == IN_SUBST) {
action.inputAt = action.args.size();
action.args.push_back("in");
} else if (token == OUT_SUBST) {
action.outputAt = action.args.size();
action.args.push_back("out");
} else
error("Expecting a program argument", false);
}
}
break;
default :
p++;
break;
}
}
void parsePreProcessor() {
if (next() != COMMAND) {
error("Expecting 'command'");
return;
}
parseCommand(confDat->PreProcessor);
}
void parseTranslator() {
if (next() != COMMAND) {
error("Expecting 'command'");
return;
}
parseCommand(confDat->Translator);
}
void parseOptimizer() {
if (next() != COMMAND) {
error("Expecting 'command'");
return;
}
parseCommand(confDat->Optimizer);
}
void parseAssembler() {
if (next() != COMMAND) {
error("Expecting 'command'");
return;
}
parseCommand(confDat->Assembler);
}
void parseLinker() {
if (next() != COMMAND) {
error("Expecting 'command'");
return;
}
parseCommand(confDat->Linker);
}
void parseAssignment() {
switch (token) {
case LANG: return parseLang();
case PREPROCESSOR: return parsePreProcessor();
case TRANSLATOR: return parseTranslator();
case OPTIMIZER: return parseOptimizer();
case ASSEMBLER: return parseAssembler();
case LINKER: return parseLinker();
case EOLTOK: break; // just ignore
case ERRORTOK:
default:
error("Invalid top level configuration item identifier");
}
}
void parseFile() {
while ( next() != 0 ) {
parseAssignment();
}
provider->checkErrors();
}
};
void
ParseConfigData(InputProvider& provider, CompilerDriver::ConfigData& confDat) {
ParseContext ctxt;
ctxt.token = 0;
ctxt.provider = &provider;
ctxt.confDat = &confDat;
ctxt.action = 0;
ctxt.parseFile();
}
}
CompilerDriver::ConfigData*
ParseConfigData(InputProvider& provider) {
std::string line;
CompilerDriver::ConfigData data;
while ( provider.getLine(line) ) {
// Check line length first
size_t lineLen = line.size();
if (lineLen > 4096)
provider.error("length of input line (" + utostr(lineLen) +
") is too long");
// First, skip whitespace
size_t stPos = 0;
skipWhitespace(stPos, line);
// See if there's a hash mark. It and everything after it is
// ignored so lets delete that now.
size_t hashPos = line.find('#');
if (hashPos != std::string::npos)
line.erase(hashPos);
// Make sure we have something left to parse
if (line.size() == 0)
continue; // ignore full-line comment or whitespace line
// Find the equals sign
size_t eqPos = line.find('=');
if (eqPos == std::string::npos)
provider.error("Configuration directive is missing an =");
// extract the item name
std::string name(line, stPos, eqPos-stPos);
// directives without names are illegal
if (name.empty())
provider.error("Configuration directive name is empty");
// Skip whitespace in the value
size_t valPos = eqPos + 1;
skipWhitespace(valPos, line);
// Skip white space at end of value
size_t endPos = line.length() - 1;
while (line[endPos] == ' ')
endPos--;
// extract the item value
std::string value(line, valPos, endPos-valPos+1);
// Get the configuration item as a char pointer
const char*p = name.c_str();
// Indicate we haven't found an invalid item yet.
bool invalidItem = false;
// Parse the contents by examining first character and
// using the recognize function strategically
switch (*p++) {
case 'l' :
// could it be "lang."
if (*p == 'a') { // "lang." ?
if (recognize(p,"ang")) {
p++;
switch (*p++) {
case 'n':
if (recognize(p,"ame"))
data.langName = value;
else
invalidItem = true;
break;
case 't':
if (recognize(p,"ranslator")) {
p++;
if (recognize(p,"preprocesses"))
data.TranslatorPreprocesses = getBoolean(value);
else if (recognize(p, "optimizes"))
data.TranslatorOptimizes = getBoolean(value);
else if (recognize(p, "groks_dash_O"))
data.TranslatorGroksDashO = getBoolean(value);
else
invalidItem = true;
}
else
invalidItem = true;
break;
case 'p':
if (recognize(p,"reprocessor")) {
p++;
if (recognize(p,"needed")) {
data.PreprocessorNeeded = getBoolean(value);
} else
invalidItem = true;
}
else
invalidItem = true;
break;
default:
invalidItem = true;
break;
}
}
} else if (*p == 'i') { // "linker." ?
if (recognize(p,"inker")) {
p++;
if (recognize(p,"prog"))
data.Linker.program = value;
else if (recognize(p,"args"))
parseArgs(data.Linker,value,provider);
else
invalidItem = true;
}
else
invalidItem = true;
} else {
invalidItem = true;
}
break;
case 'p' :
if (*p == 'r') { // "preprocessor." ?
if (recognize(p, "reprocessor")) {
p++;
if (recognize(p,"prog"))
data.PreProcessor.program = value;
else if (recognize(p,"args"))
parseArgs(data.PreProcessor,value,provider);
else
invalidItem = true;
} else
invalidItem = true;
} else {
invalidItem = true;
}
break;
case 't' :
if (*p == 'r') { // "translator." ?
if (recognize(p, "ranslator")) {
p++;
if (recognize(p,"prog"))
data.Translator.program = value;
else if (recognize(p,"args"))
parseArgs(data.Translator,value,provider);
else
invalidItem = true;
} else
invalidItem = true;
} else {
invalidItem = true;
}
break;
case 'o' :
if (*p == 'p') { // "optimizer." ?
if (recognize(p, "ptimizer")) {
p++;
if (recognize(p,"prog"))
data.Optimizer.program = value;
else if (recognize(p,"args"))
parseArgs(data.Optimizer,value,provider);
else
invalidItem = true;
} else
invalidItem = true;
} else {
invalidItem = true;
}
break;
case 'a' :
if (*p == 's') { // "assembler." ?
if (recognize(p, "ssembler")) {
p++;
if (recognize(p,"prog"))
data.Assembler.program = value;
else if (recognize(p,"args"))
parseArgs(data.Assembler,value,provider);
else
invalidItem = true;
} else
invalidItem = true;
} else {
invalidItem = true;
}
break;
LLVMC_ConfigDataProvider::ReadConfigData(const std::string& ftype) {
CompilerDriver::ConfigData* result = 0;
if (configDir.empty()) {
FileInputProvider fip( std::string("/etc/llvm/") + ftype );
if (!fip.okay()) {
fip.error("Configuration for '" + ftype + "' is not available.");
fip.checkErrors();
}
else {
result = new CompilerDriver::ConfigData();
ParseConfigData(fip,*result);
}
} else {
FileInputProvider fip( configDir + "/" + ftype );
if (!fip.okay()) {
fip.error("Configuration for '" + ftype + "' is not available.");
fip.checkErrors();
}
else {
result = new CompilerDriver::ConfigData();
ParseConfigData(fip,*result);
}
if (invalidItem)
provider.error("Invalid configuration item: " + line.substr(stPos, eqPos-stPos));
}
return new CompilerDriver::ConfigData(data);
}
CompilerDriver::ConfigData*
ReadConfigData(const std::string& ftype) {
if ( ftype == "ll" ) {
StaticInputProvider sip(LL_Data, sizeof(LL_Data)/sizeof(LL_Data[0]),
"LLVM Assembly (internal)");
return ParseConfigData(sip);
} else if (ftype == "st") {
StaticInputProvider sip(ST_Data, sizeof(ST_Data)/sizeof(ST_Data[0]),
"Stacker (internal)");
return ParseConfigData(sip);
}
return 0;
}
return result;
}
LLVMC_ConfigDataProvider::LLVMC_ConfigDataProvider()

3
tools/llvmc/Configuration.h
View File

@ -42,6 +42,9 @@ namespace llvm {
/// @brief Allow the configuration directory to be set
virtual void setConfigDir(const std::string& dirName) { configDir = dirName; }
private:
CompilerDriver::ConfigData* ReadConfigData(const std::string& ftype);
/// @}
/// @name Data
/// @{

1
tools/llvmc/llvmc.cpp
View File

@ -207,6 +207,7 @@ int main(int argc, char **argv) {
// Construct the ConfigDataProvider object
LLVMC_ConfigDataProvider Provider;
Provider.setConfigDir(ConfigDir);
// Construct the CompilerDriver object
CompilerDriver CD(Provider);