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/*
* Copyright (C) 2011 The Android Open Source Project
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#include "TypeFactory.h"
#include "Parser.h"
#include "VarType.h"
#include "strUtils.h"
#include <map>
#include <string>
#include <stdio.h>
#include <stdlib.h>
TypeFactory * TypeFactory::m_instance = NULL;
typedef std::map<std::string, VarType> TypeMap;
static TypeMap g_varMap;
static bool g_initialized = false;
static int g_typeId = 0;
#define ADD_TYPE(name, size, printformat,ispointer) \
g_varMap.insert(std::pair<std::string, VarType>(name, VarType(g_typeId++, name, (size + 7) >> 3, printformat , ispointer)));
void TypeFactory::initBaseTypes()
{
g_initialized = true;
ADD_TYPE("UNKNOWN", 0, "0x%x", false);
ADD_TYPE("void", 0, "0x%x", false);
ADD_TYPE("char", 8, "%c", false);
ADD_TYPE("int", 32, "%d", false);
ADD_TYPE("float", 32, "%d", false);
ADD_TYPE("short", 16, "%d", false);
}
int TypeFactory::initFromFile(const std::string &filename)
{
if (!g_initialized) {
initBaseTypes();
}
FILE *fp = fopen(filename.c_str(), "rt");
if (fp == NULL) {
perror(filename.c_str());
return -1;
}
char line[1000];
int lc = 0;
while(fgets(line, sizeof(line), fp) != NULL) {
lc++;
std::string str = trim(line);
if (str.size() == 0 || str.at(0) == '#') {
continue;
}
size_t pos = 0, last;
std::string name;
name = getNextToken(str, pos, &last, WHITESPACE);
name = normalizeTypeDeclaration(name);
if (name.size() == 0) {
fprintf(stderr, "Error: %d : missing type name\n", lc);
return -2;
}
pos = last + 1;
std::string size;
size = getNextToken(str, pos, &last, WHITESPACE);
if (size.size() == 0) {
fprintf(stderr, "Error: %d : missing type width\n", lc);
return -2;
}
pos = last + 1;
std::string printString;
printString = getNextToken(str, pos, &last, WHITESPACE);
if (printString.size() == 0) {
fprintf(stderr, "Error: %d : missing print-string\n", lc);
return -2;
}
// The ispointer definition is optional since we can just
// look at the type name, and determine it is a pointer if
// it ends with '*'.
bool isPointer = (name[name.size() - 1U] == '*');
pos = last + 1;
std::string pointerDef;
pointerDef = getNextToken(str, pos, &last, WHITESPACE);
if (pointerDef.size() != 0) {
// Just a little sanity check.
if (std::string("true")==pointerDef) {
if (!isPointer) {
fprintf(stderr, "Error: %d: invalid isPointer definition: 'true' but name does not end with '*'!\n", lc);
return -2;
}
} else if (std::string("false")==pointerDef) {
if (isPointer) {
fprintf(stderr, "Error: %d: invalid isPointer definition: 'false' but name does end with '*'!\n", lc);
return -2;
}
} else {
fprintf(stderr, "Error: %d : invalid isPointer definition, must be either \"true\" or \"false\"\n", lc);
return -2;
}
}
size_t bitSize = atoi(size.c_str());
size_t byteSize = (bitSize + 7) >> 3;
if (getVarTypeByName(name)->id() != 0) {
fprintf(stderr,
"Warining: %d : type %s is already known, definition in line %d is taken\n",
lc, name.c_str(), lc);
}
g_varMap.insert(std::pair<std::string, VarType>(
name, VarType(g_typeId++,
name,
byteSize,
printString,
isPointer)));
std::string constName = "const " + name;
g_varMap.insert(std::pair<std::string, VarType>(
constName, VarType(g_typeId++,
constName,
byteSize,
printString,
isPointer))); //add a const type
}
g_initialized = true;
return 0;
}
const VarType * TypeFactory::getVarTypeByName(const std::string & type)
{
if (!g_initialized) {
initBaseTypes();
}
TypeMap::iterator i = g_varMap.find(type);
if (i == g_varMap.end()) {
i = g_varMap.find("UNKNOWN");
}
return &(i->second);
}
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