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parse.c
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parse.c
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/*
* This file is part of OpenModelica.
*
* Copyright (c) 1998-CurrentYear, Linköpings University,
* Department of Computer and Information Science,
* SE-58183 Linköping, Sweden.
*
* All rights reserved.
*
* THIS PROGRAM IS PROVIDED UNDER THE TERMS OF THIS OSMC PUBLIC
* LICENSE (OSMC-PL). ANY USE, REPRODUCTION OR DISTRIBUTION OF
* THIS PROGRAM CONSTITUTES RECIPIENT'S ACCEPTANCE OF THE OSMC
* PUBLIC LICENSE.
*
* The OpenModelica software and the Open Source Modelica
* Consortium (OSMC) Public License (OSMC-PL) are obtained
* from Linköpings University, either from the above address,
* from the URL: http://www.ida.liu.se/projects/OpenModelica
* and in the OpenModelica distribution.
*
* This program is distributed WITHOUT ANY WARRANTY; without
* even the implied warranty of MERCHANTABILITY or FITNESS
* FOR A PARTICULAR PURPOSE, EXCEPT AS EXPRESSLY SET FORTH
* IN THE BY RECIPIENT SELECTED SUBSIDIARY LICENSE CONDITIONS
* OF OSMC-PL.
*
* See the full OSMC Public License conditions for more details.
*
*/
/* Include standard headers before we do odd things with the __cplusplus define */
#include <stdio.h>
#include <stdlib.h>
#include <errno.h>
#include <string.h>
#define bool int
#include <MetaModelica_Lexer.h>
#include <Modelica_3_Lexer.h>
#include <ParModelica_Lexer.h>
#include <ModelicaParser.h>
#include <antlr3intstream.h>
#include <antlr3config.h>
#include "errorext.h"
#include "systemimpl.h"
#include "util/omc_file.h"
pthread_once_t parser_once_create_key = PTHREAD_ONCE_INIT;
pthread_key_t modelicaParserKey;
static void make_key()
{
pthread_key_create(&modelicaParserKey,NULL);
}
static void lexNoRecover(pANTLR3_LEXER lexer)
{
pANTLR3_INT_STREAM inputStream = (pANTLR3_INT_STREAM) NULL;
lexer->rec->state->error = ANTLR3_TRUE;
lexer->rec->state->failed = ANTLR3_TRUE;
inputStream = lexer->input->istream;
inputStream->consume(inputStream);
}
static void noRecover(pANTLR3_BASE_RECOGNIZER recognizer)
{
recognizer->state->error = ANTLR3_TRUE;
recognizer->state->failed = ANTLR3_TRUE;
}
static void* noRecoverFromMismatchedSet(pANTLR3_BASE_RECOGNIZER recognizer, pANTLR3_BITSET_LIST follow)
{
recognizer->state->error = ANTLR3_TRUE;
recognizer->state->failed = ANTLR3_TRUE;
return NULL;
}
static void* noRecoverFromMismatchedToken(pANTLR3_BASE_RECOGNIZER recognizer, ANTLR3_UINT32 ttype, pANTLR3_BITSET_LIST follow)
{
pANTLR3_PARSER parser;
pANTLR3_TREE_PARSER tparser;
pANTLR3_INT_STREAM is;
void * matchedSymbol;
// Invoke the debugger event if there is a debugger listening to us
//
if (recognizer->debugger != NULL)
{
recognizer->debugger->recognitionException(recognizer->debugger, recognizer->state->exception);
}
switch (recognizer->type)
{
case ANTLR3_TYPE_PARSER:
parser = (pANTLR3_PARSER) (recognizer->super);
tparser = (pANTLR3_TREE_PARSER) NULL;
is = parser->tstream->istream;
break;
case ANTLR3_TYPE_TREE_PARSER:
tparser = (pANTLR3_TREE_PARSER) (recognizer->super);
parser = (pANTLR3_PARSER) NULL;
is = tparser->ctnstream->tnstream->istream;
break;
default:
ANTLR3_FPRINTF(stderr, "Base recognizer function recoverFromMismatchedToken called by unknown parser type - provide override for this function\n");
return NULL;
break;
}
recognizer->state->failed = ANTLR3_TRUE;
// Create an exception if we need one
//
if (recognizer->state->exception == NULL)
{
antlr3RecognitionExceptionNew(recognizer);
}
if ( recognizer->mismatchIsUnwantedToken(recognizer, is, ttype) == ANTLR3_TRUE)
{
recognizer->state->exception->type = ANTLR3_UNWANTED_TOKEN_EXCEPTION;
recognizer->state->exception->message = (void*)ANTLR3_UNWANTED_TOKEN_EXCEPTION_NAME;
recognizer->state->exception->expecting = ttype;
return NULL;
}
if (recognizer->mismatchIsMissingToken(recognizer, is, follow))
{
matchedSymbol = recognizer->getMissingSymbol(recognizer, is, recognizer->state->exception, ttype, follow);
recognizer->state->exception->type = ANTLR3_MISSING_TOKEN_EXCEPTION;
recognizer->state->exception->message = (void*)ANTLR3_MISSING_TOKEN_EXCEPTION_NAME;
recognizer->state->exception->token = matchedSymbol;
recognizer->state->exception->expecting = ttype;
return NULL;
}
// Neither deleting nor inserting tokens allows recovery
// must just report the exception.
//
recognizer->state->error = ANTLR3_TRUE;
return NULL;
}
static void handleLexerError(pANTLR3_BASE_RECOGNIZER recognizer, pANTLR3_UINT8 * tokenNames)
{
pANTLR3_LEXER lexer = (pANTLR3_LEXER)(recognizer->super);
int isEOF = lexer->input->istream->_LA(lexer->input->istream, 1) == -1;
char* chars[] = {
isEOF ? strdup("<EOF>") : strdup((const char*)(lexer->input->substr(lexer->input, lexer->getCharIndex(lexer), lexer->getCharIndex(lexer)+10)->chars)),
strdup((const char*)lexer->getText(lexer)->chars)
};
int line = 0;
int offset = 0;
if (strlen(chars[1]) > 20)
chars[1][20] = '\0';
line = lexer->getLine(lexer);
offset = lexer->getCharPositionInLine(lexer)+1;
if (*chars[1] && !ModelicaParser_lexerError) {
c_add_source_message(NULL,2, ErrorType_syntax, ErrorLevel_error, "Lexer got '%s' but failed to recognize the rest: '%s'", (const char**) chars, 2, line, offset, line, offset, false, ModelicaParser_filename_C_testsuiteFriendly);
} else if (!ModelicaParser_lexerError) {
c_add_source_message(NULL,2, ErrorType_syntax, ErrorLevel_error, "Lexer failed to recognize '%s'", (const char**) chars, 1, line, offset, line, offset, false, ModelicaParser_filename_C_testsuiteFriendly);
}
ModelicaParser_lexerError = ANTLR3_TRUE;
free(chars[0]);
free(chars[1]);
}
#include "lookupTokenName.c"
/* Error handling based on antlr3baserecognizer.c */
static void handleParseError(pANTLR3_BASE_RECOGNIZER recognizer, pANTLR3_UINT8 * tokenNames)
{
pANTLR3_PARSER parser;
pANTLR3_EXCEPTION ex;
pANTLR3_COMMON_TOKEN preToken,nextToken;
pANTLR3_TOKEN_STREAM tokenStream;
int type;
const char *token_text[3] = {0,0,0};
int p_offset, n_offset, p_line, n_line;
recognizer->state->error = ANTLR3_TRUE;
recognizer->state->failed = ANTLR3_TRUE;
if (ModelicaParser_lexerError)
return;
// Retrieve some info for easy reading.
ex = recognizer->state->exception;
switch (recognizer->type)
{
case ANTLR3_TYPE_PARSER:
parser = (pANTLR3_PARSER) (recognizer->super);
token_text[1] = (const char*) ex->message;
type = ex->type;
tokenStream = parser->getTokenStream(parser);
preToken = tokenStream->_LT(tokenStream,1);
nextToken = tokenStream->_LT(tokenStream,2);
if (preToken == NULL) preToken = nextToken;
p_line = preToken->line;
n_line = nextToken->line;
p_offset = preToken->charPosition+1;
n_offset = nextToken->charPosition;
break;
default:
ANTLR3_FPRINTF(stderr, "Base recognizer function displayRecognitionError called by unknown parser type - provide override for this function\n");
return;
break;
}
switch (type) {
case ANTLR3_UNWANTED_TOKEN_EXCEPTION:
{
ANTLR3_COMMON_TOKEN *token = (ANTLR3_COMMON_TOKEN*) ex->token;
ANTLR3_STRING *str = token->getText(token);
token_text[0] = lookupTokenName(token->type,tokenNames);
token_text[1] = token->type == ANTLR3_TOKEN_EOF ? "" : (const char*) str->chars;
token_text[2] = lookupTokenName(ex->expecting,tokenNames);
c_add_source_message(NULL,2, ErrorType_syntax, ErrorLevel_error, "Expected token of type %s, got '%s' of type %s", token_text, 3, p_line, p_offset, n_line, n_offset, false, ModelicaParser_filename_C_testsuiteFriendly);
break;
}
case ANTLR3_MISSING_TOKEN_EXCEPTION:
token_text[0] = lookupTokenName(ex->expecting,tokenNames);
c_add_source_message(NULL,2, ErrorType_syntax, ErrorLevel_error, "Missing token: %s", token_text, 1, p_line, p_offset, p_line, p_offset, false, ModelicaParser_filename_C_testsuiteFriendly);
break;
case ANTLR3_NO_VIABLE_ALT_EXCEPTION:
token_text[0] = preToken->type == ANTLR3_TOKEN_EOF ? "<EOF>" : (const char*)preToken->getText(preToken)->chars;
if (preToken->type == ANTLR3_TOKEN_EOF) n_offset = p_offset;
c_add_source_message(NULL,2, ErrorType_syntax, ErrorLevel_error, "No viable alternative near token: %s", token_text, 1, p_line, p_offset, n_line, n_offset, false, ModelicaParser_filename_C_testsuiteFriendly);
break;
case ModelicaParserException:
{
fileinfo* info = (fileinfo*) ex->custom;
c_add_source_message(NULL,2, ErrorType_syntax, ErrorLevel_error, "Parse error: %s", token_text+1, 1, info->line1, info->offset1, info->line2, info->offset2, false, ModelicaParser_filename_C_testsuiteFriendly);
free(info);
ex->custom = 0;
break;
}
case ANTLR3_MISMATCHED_SET_EXCEPTION:
case ANTLR3_EARLY_EXIT_EXCEPTION:
case ANTLR3_RECOGNITION_EXCEPTION:
default:
token_text[2] = (const char*)ex->message;
token_text[1] = preToken->type == ANTLR3_TOKEN_EOF ? "" : (const char*)preToken->getText(preToken)->chars;
token_text[0] = lookupTokenName(preToken->type,tokenNames);
if (preToken->type == ANTLR3_TOKEN_EOF) n_offset = p_offset;
c_add_source_message(NULL,2, ErrorType_syntax, ErrorLevel_error, "Parser error: %s near: %s (%s)", token_text, 3, p_line, p_offset, n_line, n_offset, false, ModelicaParser_filename_C_testsuiteFriendly);
break;
}
}
static void* parseStream(pANTLR3_INPUT_STREAM input, int langStd, int runningTestsuite)
{
pANTLR3_LEXER pLexer;
pANTLR3_COMMON_TOKEN_STREAM tstream;
pModelicaParser psr;
void* lxr = 0;
void* res = NULL;
char* oldfilename;
// Only use the basename of the file when running the testsuite
oldfilename = (char*) ModelicaParser_filename_C;
ModelicaParser_filename_C = SystemImpl__iconv(ModelicaParser_filename_C,"UTF-8","UTF-8",1);
if (!*ModelicaParser_filename_C) return NULL;
ModelicaParser_filename_C = strdup(ModelicaParser_filename_C);
ModelicaParser_filename_OMC = mmc_mk_scon(ModelicaParser_filename_C);
ModelicaParser_langStd = langStd;
if (ModelicaParser_flags & PARSE_META_MODELICA) {
lxr = MetaModelica_LexerNew(input);
//printf("Parsing MetaModelica.\n\n");
if (lxr == NULL ) { fprintf(stderr, "Unable to create the lexer due to malloc() failure1\n"); fflush(stderr); exit(ANTLR3_ERR_NOMEM); }
pLexer = ((pMetaModelica_Lexer)lxr)->pLexer;
pLexer->rec->displayRecognitionError = handleLexerError;
pLexer->recover = lexNoRecover;
tstream = antlr3CommonTokenStreamSourceNew(ANTLR3_SIZE_HINT, TOKENSOURCE(((pMetaModelica_Lexer)lxr)));
}
else if (ModelicaParser_flags & PARSE_PARMODELICA) {
lxr = ParModelica_LexerNew(input);
//printf("Parsing ParModelica.\n\n");
if (lxr == NULL ) { fprintf(stderr, "Unable to create the lexer due to malloc() failure1\n"); exit(ANTLR3_ERR_NOMEM); }
pLexer = ((pParModelica_Lexer)lxr)->pLexer;
pLexer->rec->displayRecognitionError = handleLexerError;
pLexer->recover = lexNoRecover;
tstream = antlr3CommonTokenStreamSourceNew(ANTLR3_SIZE_HINT, TOKENSOURCE(((pParModelica_Lexer)lxr)));
} else {
lxr = Modelica_3_LexerNew(input);
if (lxr == NULL ) { fprintf(stderr, "Unable to create the lexer due to malloc() failure1\n"); fflush(stderr); exit(ANTLR3_ERR_NOMEM); }
pLexer = ((pModelica_3_Lexer)lxr)->pLexer;
pLexer->rec->displayRecognitionError = handleLexerError;
pLexer->recover = lexNoRecover;
tstream = antlr3CommonTokenStreamSourceNew(ANTLR3_SIZE_HINT, TOKENSOURCE(((pModelica_3_Lexer)lxr)));
}
ModelicaParser_lexerError = ANTLR3_FALSE;
if (tstream == NULL) { fprintf(stderr, "Out of memory trying to allocate token stream\n"); fflush(stderr); exit(ANTLR3_ERR_NOMEM); }
tstream->channel = ANTLR3_TOKEN_DEFAULT_CHANNEL;
tstream->discardOffChannel = ANTLR3_TRUE;
tstream->discardOffChannelToks(tstream, ANTLR3_FALSE);
// Finally, now that we have our lexer constructed, create the parser
psr = ModelicaParserNew(tstream); // ModelicaParserNew is generated by ANTLR3
if (tstream == NULL) { fprintf(stderr, "Out of memory trying to allocate parser\n"); fflush(stderr); exit(ANTLR3_ERR_NOMEM); }
psr->pParser->rec->displayRecognitionError = handleParseError;
psr->pParser->rec->recover = noRecover;
psr->pParser->rec->recoverFromMismatchedToken = noRecoverFromMismatchedToken;
// psr->pParser->rec->recoverFromMismatchedSet = noRecoverFromMismatchedSet;
/* if (ModelicaParser_flags & PARSE_FLAT)
res = psr->flat_class(psr);
else */
if (ModelicaParser_flags & PARSE_EXPRESSION) {
res = psr->interactive_stmt(psr);
} else if (ModelicaParser_flags & PARSE_PATH) {
res = psr->name_path_end(psr);
} else if (ModelicaParser_flags & PARSE_CREF) {
res = psr->component_reference_end(psr);
} else {
res = psr->stored_definition(psr);
}
if (ModelicaParser_lexerError || pLexer->rec->state->failed || psr->pParser->rec->state->failed) { // Some parts of the AST are NULL if errors are used...
res = NULL;
}
psr->free(psr);
psr = (pModelicaParser) NULL;
tstream->free(tstream);
tstream = (pANTLR3_COMMON_TOKEN_STREAM) NULL;
if (ModelicaParser_flags & PARSE_META_MODELICA) {
((pMetaModelica_Lexer)lxr)->free((pMetaModelica_Lexer)lxr);
} else if (ModelicaParser_flags & PARSE_PARMODELICA) {
((pParModelica_Lexer)lxr)->free((pParModelica_Lexer)lxr);
} else {
((pModelica_3_Lexer)lxr)->free((pModelica_3_Lexer)lxr);
}
lxr = NULL;
input->close(input);
input = (pANTLR3_INPUT_STREAM) NULL;
free((char*)ModelicaParser_filename_C);
ModelicaParser_filename_C = oldfilename;
return res;
}
static void* parseString(const char* data, const char* interactiveFilename, int flags, int langStd, int runningTestsuite)
{
bool debug = false; //check_debug_flag("parsedebug");
time_t current_time = time(NULL);
pANTLR3_UINT8 fName;
pANTLR3_INPUT_STREAM input;
parser_members members;
pthread_once(&parser_once_create_key,make_key);
pthread_setspecific(modelicaParserKey,&members);
members.encoding = "UTF-8";
members.filename_C = interactiveFilename;
members.filename_C_testsuiteFriendly = interactiveFilename;
members.flags = flags;
members.readonly = 0;
members.first_comment = 0;
members.timestamp = mmc_mk_rcon((double)current_time);
if (debug) { fprintf(stderr, "Starting parsing of file: %s\n", members.filename_C); fflush(stderr); }
fName = (pANTLR3_UINT8)members.filename_C;
#if defined(ANTLR_C_VERSION_3_2)
input = antlr3NewAsciiStringInPlaceStream((pANTLR3_UINT8)data,strlen(data),fName);
#elif defined(ANTLR_C_VERSION_3_4)
input = antlr3StringStreamNew((pANTLR3_UINT8)data, ANTLR3_ENC_8BIT, strlen(data), fName);
#else
#error "Neither ANTLR_C_VERSION_3_2 or ANTLR_C_VERSION_3_4 is defined. Could not find the ANTLR 3.x C runtime!"
#endif
if ( input == NULL ) {
fprintf(stderr, "Unable to open file %s\n", members.filename_C); fflush(stderr);
return NULL;
}
return parseStream(input, langStd, runningTestsuite);
}
#ifdef OMENCRYPTION
#include "../../OMEncryption/Parser/parseEncryption.c"
#endif
static void* parseFile(const char* fileName, const char* infoName, int flags, const char *encoding, int langStd, int runningTestsuite, const char* libraryPath, void* lveInstance)
{
bool debug = false; //check_debug_flag("parsedebug");
pANTLR3_UINT8 fName;
pANTLR3_INPUT_STREAM input;
int len = 0;
parser_members members;
pthread_once(&parser_once_create_key,make_key);
pthread_setspecific(modelicaParserKey,&members);
members.encoding = encoding;
members.filename_C = fileName;
members.filename_C_testsuiteFriendly = infoName;
members.flags = flags;
members.readonly = !SystemImpl__regularFileWritable(fileName);
omc_first_comment = 0;
if (debug) { fprintf(stderr, "Starting parsing of file: %s\n", fileName); fflush(stderr); }
len = strlen(fileName);
if (len > 3 && 0==strcmp(fileName+len-4,".mof"))
ModelicaParser_flags |= PARSE_FLAT;
#ifdef OMENCRYPTION
if (len > 3 && 0==strcmp(fileName+len-4,".moc")) {
return parseEncryptedFile(fileName, langStd, runningTestsuite, libraryPath, lveInstance);
}
#else
if (len > 3 && 0==strcmp(fileName+len-4,".moc")) {
c_add_message(NULL,-1, ErrorType_scripting, ErrorLevel_error, gettext("Cannot load the encrypted package. OpenModelica is not compiled with encryption support."), NULL, 0);
return NULL;
}
#endif
/*
* Workaround: ANTLR3 does not like 0-length files on Windows!
* So we pass an empty string instead :)
*/
#if defined(__MINGW32__) || defined(_MSC_VER)
struct _stat st;
#else
struct stat st;
#endif
omc_stat(members.filename_C, &st);
members.timestamp = mmc_mk_rcon((double)st.st_mtime);
if (0 == st.st_size) return parseString("",members.filename_C,ModelicaParser_flags, langStd, runningTestsuite);
fName = (pANTLR3_UINT8)fileName;
#if defined(ANTLR_C_VERSION_3_2)
input = antlr3AsciiFileStreamNew(fName);
#elif defined(ANTLR_C_VERSION_3_4)
input = antlr3FileStreamNew(fName, ANTLR3_ENC_8BIT);
#else
#error "Neither ANTLR_C_VERSION_3_2 or ANTLR_C_VERSION_3_4 is defined. Could not find the ANTLR 3.x C runtime!"
#endif
if ( input == NULL ) {
return NULL;
}
return parseStream(input, langStd, runningTestsuite);
}
int startLibraryVendorExecutable(const char* path, void** lveInstance)
{
*lveInstance = mmc_mk_some(0);
#ifdef OMENCRYPTION
return startLibraryVendorExecutableImpl(path, lveInstance);
#endif
return 0;
}
int checkLVEToolLicense(void** lveInstance, const char* packageName)
{
#ifdef OMENCRYPTION
return checkLVEToolLicenseImpl(lveInstance, packageName);
#endif
return 0;
}
void checkLVEToolFeature(void** lveInstance, const char* feature)
{
#ifdef OMENCRYPTION
checkLVEToolFeatureImpl(lveInstance, feature);
#endif
}
void stopLibraryVendorExecutable(void** lveInstance)
{
#ifdef OMENCRYPTION
stopLibraryVendorExecutableImpl(lveInstance);
#endif
}