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#ifndef SCRIPTBUILDER_H
#define SCRIPTBUILDER_H
//---------------------------
// Compilation settings
//
// Set this flag to turn on/off metadata processing
// 0 = off
// 1 = on
#ifndef AS_PROCESS_METADATA
#define AS_PROCESS_METADATA 1
#endif
// TODO: Implement flags for turning on/off include directives and conditional programming
//---------------------------
// Declaration
//
#ifndef ANGELSCRIPT_H
// Avoid having to inform include path if header is already include before
#include <angelscript.h>
#endif
#if defined(_MSC_VER) && _MSC_VER <= 1200
// disable the annoying warnings on MSVC 6
#pragma warning (disable:4786)
#endif
#include <string>
#include <map>
#include <set>
#include <vector>
#include <string.h> // _strcmpi
BEGIN_AS_NAMESPACE
class CScriptBuilder;
// This callback will be called for each #include directive encountered by the
// builder. The callback should call the AddSectionFromFile or AddSectionFromMemory
// to add the included section to the script. If the include cannot be resolved
// then the function should return a negative value to abort the compilation.
typedef int (*INCLUDECALLBACK_t)(const char *include, const char *from, CScriptBuilder *builder, void *userParam);
// Helper class for loading and pre-processing script files to
// support include directives and metadata declarations
class CScriptBuilder
{
public:
CScriptBuilder();
// Start a new module
int StartNewModule(asIScriptEngine *engine, const char *moduleName);
// Load a script section from a file on disk
// Returns 1 if the file was included
// 0 if the file had already been included before
// <0 on error
int AddSectionFromFile(const char *filename);
// Load a script section from memory
// Returns 1 if the section was included
// 0 if a section with the same name had already been included before
// <0 on error
int AddSectionFromMemory(const char *sectionName,
const char *scriptCode,
unsigned int scriptLength = 0,
int lineOffset = 0);
// Build the added script sections
int BuildModule();
// Returns the current module
asIScriptModule *GetModule();
// Register the callback for resolving include directive
void SetIncludeCallback(INCLUDECALLBACK_t callback, void *userParam);
// Add a pre-processor define for conditional compilation
void DefineWord(const char *word);
// Enumerate included script sections
unsigned int GetSectionCount() const;
std::string GetSectionName(unsigned int idx) const;
#if AS_PROCESS_METADATA == 1
// Get metadata declared for classes, interfaces, and enums
const char *GetMetadataStringForType(int typeId);
// Get metadata declared for functions
const char *GetMetadataStringForFunc(asIScriptFunction *func);
// Get metadata declared for global variables
const char *GetMetadataStringForVar(int varIdx);
// Get metadata declared for class variables
const char *GetMetadataStringForTypeProperty(int typeId, int varIdx);
// Get metadata declared for class methods
const char *GetMetadataStringForTypeMethod(int typeId, asIScriptFunction *method);
#endif
protected:
void ClearAll();
int Build();
int ProcessScriptSection(const char *script, unsigned int length, const char *sectionname, int lineOffset);
int LoadScriptSection(const char *filename);
bool IncludeIfNotAlreadyIncluded(const char *filename);
int SkipStatement(int pos);
int ExcludeCode(int start);
void OverwriteCode(int start, int len);
asIScriptEngine *engine;
asIScriptModule *module;
std::string modifiedScript;
INCLUDECALLBACK_t includeCallback;
void *callbackParam;
#if AS_PROCESS_METADATA == 1
int ExtractMetadataString(int pos, std::string &outMetadata);
int ExtractDeclaration(int pos, std::string &outName, std::string &outDeclaration, int &outType);
enum METADATATYPE
{
MDT_TYPE = 1,
MDT_FUNC = 2,
MDT_VAR = 3,
MDT_VIRTPROP = 4,
MDT_FUNC_OR_VAR = 5
};
// Temporary structure for storing metadata and declaration
struct SMetadataDecl
{
SMetadataDecl(std::string m, std::string n, std::string d, int t, std::string c, std::string ns) : metadata(m), name(n), declaration(d), type(t), parentClass(c), nameSpace(ns) {}
std::string metadata;
std::string name;
std::string declaration;
int type;
std::string parentClass;
std::string nameSpace;
};
std::vector<SMetadataDecl> foundDeclarations;
std::string currentClass;
std::string currentNamespace;
// Storage of metadata for global declarations
std::map<int, std::string> typeMetadataMap;
std::map<int, std::string> funcMetadataMap;
std::map<int, std::string> varMetadataMap;
// Storage of metadata for class member declarations
struct SClassMetadata
{
SClassMetadata(const std::string& aName) : className(aName) {}
std::string className;
std::map<int, std::string> funcMetadataMap;
std::map<int, std::string> varMetadataMap;
};
std::map<int, SClassMetadata> classMetadataMap;
#endif
#ifdef _WIN32
// On Windows the filenames are case insensitive so the comparisons to
// avoid duplicate includes must also be case insensitive. True case insensitive
// is not easy as it must be language aware, but a simple implementation such
// as strcmpi should suffice in almost all cases.
//
// ref: http://www.gotw.ca/gotw/029.htm
// ref: https://msdn.microsoft.com/en-us/library/windows/desktop/dd317761(v=vs.85).aspx
// ref: http://site.icu-project.org/
// TODO: Strings by default are treated as UTF8 encoded. If the application choses to
// use a different encoding, the comparison algorithm should be adjusted as well
struct ci_less
{
bool operator()(const std::string &a, const std::string &b) const
{
return _strcmpi(a.c_str(), b.c_str()) < 0;
}
};
std::set<std::string, ci_less> includedScripts;
#else
std::set<std::string> includedScripts;
#endif
std::set<std::string> definedWords;
};
END_AS_NAMESPACE
#endif
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