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/*****
* process.h
* Andy Hammerlindl 2006/08/19
*
* Handles processing blocks of code (including files, strings, and the
* interactive prompt, for listing and parse-only modes as well as actually
* running it.
*****/
#ifndef PROCESS_H
#define PROCESS_H
#include "common.h"
#include "stm.h"
#include "stack.h"
#include "pipestream.h"
#include "callable.h"
#include "pen.h"
#include "dec.h"
#include "transform.h"
#include "parser.h"
#ifdef HAVE_RPC_RPC_H
#include "xstream.h"
#endif
// Process the code respecting the parseonly and listvariables flags of
// settings.
void processCode(absyntax::block *code);
void processFile(const string& filename, bool purge=false);
void processPrompt();
// Run the code in its own environment.
void runCode(absyntax::block *code);
void runString(const string& s, bool interactiveWrite=false);
void runFile(const string& filename);
void runPrompt();
// Run the code in a given run-time environment.
typedef vm::interactiveStack istack;
void runCodeEmbedded(absyntax::block *code, trans::coenv &e, istack &s);
void runStringEmbedded(const string& str, trans::coenv &e, istack &s);
void runPromptEmbedded(trans::coenv &e, istack &s);
// Basic listing.
void doUnrestrictedList();
template<class T>
class terminator {
public:
typedef mem::vector<T *> Pointer;
Pointer pointer;
// Return first available index
size_t available() {
size_t index=0;
for(typename Pointer::iterator p=pointer.begin(); p != pointer.end(); ++p) {
if(*p == NULL) {return index;}
++index;
}
pointer.push_back(NULL);
return index;
}
size_t add(T *p) {
size_t index=available();
pointer[index]=p;
return index;
}
void remove(size_t index) {
pointer[index]=NULL;
}
~terminator() {
for(typename Pointer::iterator p=pointer.begin(); p != pointer.end(); ++p) {
if(*p != NULL) {
(*p)->~T();
(*p)=NULL;
}
}
}
};
class texstream : public iopipestream {
public:
~texstream();
};
typedef std::pair<size_t,size_t> linecolumn;
typedef mem::map<CONST linecolumn,string> xkey_t;
typedef mem::deque<camp::transform> xtransform_t;
typedef mem::map<CONST string,xtransform_t> xmap_t;
struct processDataStruct {
texstream tex; // Bi-directional pipe to latex (to find label bbox)
mem::list<string> TeXpipepreamble;
mem::list<string> TeXpreamble;
vm::callable *atExitFunction;
vm::callable *atUpdateFunction;
vm::callable *atBreakpointFunction;
camp::pen defaultpen;
camp::pen currentpen;
// For xasy:
string fileName;
position topPos;
string KEY;
xkey_t xkey;
xmap_t xmap;
unsigned int xmapCount;
terminator<std::ofstream> ofile;
terminator<std::fstream> ifile;
#ifdef HAVE_RPC_RPC_H
terminator<xdr::ixstream> ixfile;
terminator<xdr::oxstream> oxfile;
#endif
processDataStruct() : xmapCount(0) {
atExitFunction=NULL;
atUpdateFunction=NULL;
atBreakpointFunction=NULL;
defaultpen=camp::pen::initialpen();
currentpen=camp::pen();
}
};
enum transMode {
TRANS_INTERACTIVE,
TRANS_NORMAL
};
// Abstract base class for the core object being run in line-at-a-time mode, it
// may be a block of code, file, or interactive prompt.
struct icore {
virtual ~icore() {}
virtual void doParse() = 0;
virtual void doList() = 0;
public:
virtual void preRun(trans::coenv &e, istack &s);
virtual void run(trans::coenv &e, istack &s, transMode tm=TRANS_NORMAL) = 0;
virtual void postRun(trans::coenv &, istack &s);
virtual void doRun(bool purge=false, transMode tm=TRANS_NORMAL);
virtual void process(bool purge=false);
};
// Abstract base class for one-time processing of an abstract syntax tree.
class itree : public icore {
string name;
absyntax::block *cachedTree;
public:
itree(string name="<unnamed>");
virtual absyntax::block *buildTree() = 0;
// Build the tree, possibly throwing a handled_error if it cannot be built.
virtual absyntax::block *getTree();
virtual string getName();
void doParse();
void doList();
void run(trans::coenv &e, istack &s, transMode tm=TRANS_NORMAL);
void doExec(transMode tm=TRANS_NORMAL);
};
class ifile : public itree {
string filename;
string outname;
string outname_save;
public:
ifile(const string& filename);
absyntax::block *buildTree();
void preRun(trans::coenv& e, istack& s);
void postRun(trans::coenv &e, istack& s);
void process(bool purge=false);
};
class icode : public itree {
absyntax::block *tree;
public:
icode(absyntax::block *tree, string name="<unnamed>")
: itree(name), tree(tree) {}
absyntax::block *buildTree() {
return tree;
}
};
class istring : public itree {
string str;
public:
istring(const string& str, string name="<eval>")
: itree(name), str(str) {}
absyntax::block *buildTree() {
return parser::parseString(str, getName());
}
};
processDataStruct &processData();
#endif
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