man ScriptImage (Fonctions bibliothèques) - A derivable class to hold compiled script images for active processes. Script compiler image set.
NAME
ScriptImage - A derivable class to hold compiled script images for active processes. Script compiler image set.
SYNOPSIS
#include <script.h>
Inherits Script.
Public Methods
virtual Name * getScript (const char *name)
Fetch named script.
virtual Name * dupScript (const char *name, const char *target)
Duplicate script if needed.
unsigned gather (const char *suffix, Name **array, unsigned size)
Fetch list of relational scripts.
std::istream * getSource (void)
Used by embedded interpreters to fetch script from the current source file.
Protected Methods
char * getToken (char **pre=NULL)
Method getHandler (const char *keyword)
Get the interpreter method pointer for a given keyword.
ScriptImage (ScriptCommand *cmdset, const char *symset)
Construct a new working image.
void purge (void)
Purge and reload the script image workspace.
Name * include (const char *scrfile)
A method to invoke the script compiler to include a script only if it has not been included already.
int compile (const char *scrfile)
The script compiler itself.
int compile (const char *scrfile, char *name)
Compile a script from disk and give it a different internal 'name' as passed.
int compile (std::istream *str, char *name, const char *scrname=NULL)
Compile an open stream object into a script.
void commit (void)
Used in the derived constructor to 'commit' the current image for new processes.
virtual bool preProcess (const char *directive, Name *script)
used to create dialect specific pre-precessor directives.
virtual const char * getDefined (const char *token)
Used to process '$const' inserts.
void load (Initial *ilist)
Used by a derived constructor to load an initialization list.
void initial (const char *keyword, const char *value, unsigned size=0)
Used to load a single initialization list entry.
Protected Attributes
std::ifstream scrSource
std::istream * scrStream
ScriptCommand * cmds
int refcount
Name * index [37]
char * buffer
unsigned bufsize
char * bp
bool quote
unsigned paren
Mutex duplock
ScriptImage::InitialList * ilist
Friends
class ScriptInterp
class ScriptModule
DETAILED DESCRIPTION
A derivable class to hold compiled script images for active processes. Script compiler image set.
This includes the script image compiler itself. Typically, a script is compiled one file at a time from a directory, and the committed, during the constructor in a derived class.
Author: David Sugar <dyfet@ostel.com>.
CONSTRUCTOR & DESTRUCTOR DOCUMENTATION
ScriptImage::ScriptImage (ScriptCommand * cmdset, const char * symset) [protected]
Construct a new working image.
This must be derived to an application specific compiler that can scan directories and invoke the compiler as needed.
Parameters:
- cmdset
- of keyword table object used.
MEMBER FUNCTION DOCUMENTATION
void ScriptImage::commit (void) [protected]
Used in the derived constructor to 'commit' the current image for new processes.
This is usually the last statement in the derived constructor.
int ScriptImage::compile (std::istream * str, char * name, const char * scrname = NULL) [protected]
Compile an open stream object into a script.
Returns: lines of script compiled.
Parameters:
- stream
- object to use.
- name
- of script save under.
int ScriptImage::compile (const char * scrfile, char * name) [protected]
Compile a script from disk and give it a different internal 'name' as passed.
Returns: lines of script compiled.
Parameters:
- name
- of script file to compile.
- name
- of script to save under.
- test
- if script already loaded.
int ScriptImage::compile (const char * scrfile) [protected]
The script compiler itself.
This linearly compiles a Bayonne script file that is specified. Normally used along with a dir scanner in the constructor.
Returns: lines of script compiled.
Parameters:
- name
- of script file to compile.
virtual Name* ScriptImage::dupScript (const char * name, const char * target) [virtual]
Duplicate script if needed.
Parameters:
- script
- name to dup.
- target
- name to dup as.
Returns: script or NULL.
unsigned ScriptImage::gather (const char * suffix, Name ** array, unsigned size)
Fetch list of relational scripts.
Parameters:
- suffix.
- index.
- max
- entries.
Returns: count of entries found.
virtual const char* ScriptImage::getDefined (const char * token) [inline, protected, virtual]
Used to process '$const' inserts.
Returns: string if found.
Parameters:
- script
- token being substituted.
Method ScriptImage::getHandler (const char * keyword) [inline, protected]
Get the interpreter method pointer for a given keyword.
Returns: method handler.
Parameters:
- keyword
- to search.
virtual Name* ScriptImage::getScript (const char * name) [virtual]
Fetch named script.
Parameters:
- script
- name to find.
Returns: script or NULL.
std::istream* ScriptImage::getSource (void) [inline]
Used by embedded interpreters to fetch script from the current source file.
Returns: reference to source file stream.
Name* ScriptImage::include (const char * scrfile) [protected]
A method to invoke the script compiler to include a script only if it has not been included already.
Returns: named script object.
Parameters:
- name
- of script file to compile.
void ScriptImage::initial (const char * keyword, const char * value, unsigned size = 0) [protected]
Used to load a single initialization list entry.
Parameters:
- keyword
- value
- size
void ScriptImage::load (Initial * ilist) [protected]
Used by a derived constructor to load an initialization list.
Parameters:
- initialization
- list.
virtual bool ScriptImage::preProcess (const char * directive, Name * script) [inline, protected, virtual]
used to create dialect specific pre-precessor directives.
Returns: true if directive claimed.
Parameters:
- directive
- script
- object being built
AUTHOR
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