mirror of
https://github.com/amyinspace/MagicSetEditor2.git
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twanvl
1b516e781f
git-svn-id: svn://svn.code.sf.net/p/magicseteditor/code/trunk@852 0fc631ac-6414-0410-93d0-97cfa31319b6
94 lines
3.5 KiB
C++
94 lines
3.5 KiB
C++
//+----------------------------------------------------------------------------+
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//| Description: Magic Set Editor - Program to make Magic (tm) cards |
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//| Copyright: (C) 2001 - 2008 Twan van Laarhoven and "coppro" |
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//| License: GNU General Public License 2 or later (see file COPYING) |
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//+----------------------------------------------------------------------------+
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#ifndef HEADER_SCRIPT_VALUE
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#define HEADER_SCRIPT_VALUE
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// ----------------------------------------------------------------------------- : Includes
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#include <util/prec.hpp>
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#include <gfx/color.hpp>
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class Context;
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class Dependency;
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// ----------------------------------------------------------------------------- : ScriptValue
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DECLARE_POINTER_TYPE(ScriptValue);
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enum ScriptType
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{ SCRIPT_NIL
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, SCRIPT_INT
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, SCRIPT_DOUBLE
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, SCRIPT_STRING
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, SCRIPT_COLOR
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, SCRIPT_IMAGE
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, SCRIPT_FUNCTION
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, SCRIPT_OBJECT // Only ScriptObject
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, SCRIPT_COLLECTION
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, SCRIPT_ITERATOR
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, SCRIPT_DUMMY
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, SCRIPT_ERROR
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};
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/// A value that can be handled by the scripting engine.
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/// Actual values are derived types
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class ScriptValue : public IntrusivePtrBaseWithDelete {
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public:
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virtual ~ScriptValue() {}
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/// Information on the type of this value
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virtual ScriptType type() const = 0;
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/// Name of the type of value
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virtual String typeName() const = 0;
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/// A pointer that uniquely identifies the value, used for comparing.
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/** If implementation is not possible, should return nullptr. */
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virtual const void* comparePointer() const;
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/// Convert this value to a string
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virtual operator String() const;
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/// Convert this value to a double
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virtual operator double() const;
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/// Convert this value to an integer
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virtual operator int() const;
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/// Convert this value to a boolean
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inline operator bool() const { return (int)*this; }
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/// Convert this value to a color
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virtual operator AColor() const;
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/// Explicit overload to convert to a string
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/** This is sometimes necessary, because wxString has an int constructor,
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* which confuses gcc. */
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inline String toString() const { return *this; }
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/// Get a member variable from this value
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virtual ScriptValueP getMember(const String& name) const;
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/// Signal that a script depends on a member of this value
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/** It is the abstract version of getMember*/
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virtual ScriptValueP dependencyMember(const String& name, const Dependency&) const;
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/// Evaluate this value (if it is a function)
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virtual ScriptValueP eval(Context&) const;
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/// Mark the scripts that this function depends on
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/** Return value is an abstract version of the return value of eval */
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virtual ScriptValueP dependencies(Context&, const Dependency&) const;
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/// Return an iterator for the current collection, an iterator is a value that has next()
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/** thisP can be used to prevent destruction of the collection */
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virtual ScriptValueP makeIterator(const ScriptValueP& thisP) const;
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/// Return the next item for this iterator, or ScriptValueP() if there is no such item
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virtual ScriptValueP next();
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/// Return the number of items in this value (assuming it is a collection)
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virtual int itemCount() const;
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};
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extern ScriptValueP script_nil; ///< The preallocated nil value
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extern ScriptValueP script_true; ///< The preallocated true value
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extern ScriptValueP script_false; ///< The preallocated false value
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extern ScriptValueP dependency_dummy; ///< Dummy value used during dependency analysis
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// ----------------------------------------------------------------------------- : EOF
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#endif
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