8de5b49cdf 2010-11-09        kinaba: /**
4198578702 2010-11-07        kinaba:  * Authors: k.inaba
4198578702 2010-11-07        kinaba:  * License: NYSL 0.9982 http://www.kmonos.net/nysl/
4198578702 2010-11-07        kinaba:  *
4198578702 2010-11-07        kinaba:  * Evaluator for Polemy programming language.
423f308350 2010-11-07        kinaba:  */
4198578702 2010-11-07        kinaba: module polemy.eval;
4198578702 2010-11-07        kinaba: import polemy._common;
3464a035ec 2010-11-20        kinaba: import polemy.failure;
423f308350 2010-11-07        kinaba: import polemy.ast;
3f5dc76a75 2010-11-07        kinaba: import polemy.parse;
b0d8d7875b 2010-11-08        kinaba: import polemy.value;
435fa085ec 2010-11-21        kinaba: import polemy.layer;
423f308350 2010-11-07        kinaba: 
6ac127ddd0 2010-11-23        kinaba: class Evaluator
423f308350 2010-11-07        kinaba: {
6ac127ddd0 2010-11-23        kinaba: public:
6ac127ddd0 2010-11-23        kinaba: 	this() { theContext = new Table; }
6ac127ddd0 2010-11-23        kinaba: 
6ac127ddd0 2010-11-23        kinaba: 	Value evalAST(AST e)
6ac127ddd0 2010-11-23        kinaba: 	{
6ac127ddd0 2010-11-23        kinaba: 		return eval(e, ValueLayer, theContext, OverwriteCtx);
6ac127ddd0 2010-11-23        kinaba: 	}
6ac127ddd0 2010-11-23        kinaba: 
6ac127ddd0 2010-11-23        kinaba: 	Value evalString(S,T...)(S str, T fn_ln_cn)
6ac127ddd0 2010-11-23        kinaba: 	{
6ac127ddd0 2010-11-23        kinaba: 		return evalAST(parseString(str,fn_ln_cn));
6ac127ddd0 2010-11-23        kinaba: 	}
6ac127ddd0 2010-11-23        kinaba: 
6ac127ddd0 2010-11-23        kinaba: 	Value evalFile(S,T...)(S filename, T ln_cn)
6ac127ddd0 2010-11-23        kinaba: 	{
6ac127ddd0 2010-11-23        kinaba: 		return evalAST(parseFile(filename,ln_cn));
6ac127ddd0 2010-11-23        kinaba: 	}
6ac127ddd0 2010-11-23        kinaba: 
6ac127ddd0 2010-11-23        kinaba: 	Table globalContext()
6ac127ddd0 2010-11-23        kinaba: 	{
6ac127ddd0 2010-11-23        kinaba: 		return theContext;
6ac127ddd0 2010-11-23        kinaba: 	}
6ac127ddd0 2010-11-23        kinaba: 
6ac127ddd0 2010-11-23        kinaba: private:
6ac127ddd0 2010-11-23        kinaba: 	Table theContext;
6ac127ddd0 2010-11-23        kinaba: 
6ac127ddd0 2010-11-23        kinaba: private:
6ac127ddd0 2010-11-23        kinaba: 	enum : bool { CascadeCtx=false, OverwriteCtx=true };
6ac127ddd0 2010-11-23        kinaba: 
6ac127ddd0 2010-11-23        kinaba: 	Value eval( AST e, Layer lay, Table ctx, bool overwriteCtx=CascadeCtx )
6ac127ddd0 2010-11-23        kinaba: 	{
6ac127ddd0 2010-11-23        kinaba: 		// dynamic-overload-resolution-pattern: modify here
6ac127ddd0 2010-11-23        kinaba: 		enum funName = "eval";
6ac127ddd0 2010-11-23        kinaba: 		alias TypeTuple!(e,lay,ctx,overwriteCtx) params;
6ac127ddd0 2010-11-23        kinaba: 
6ac127ddd0 2010-11-23        kinaba: 		// dynamic-overload-resolution-pattern: dispatch
6ac127ddd0 2010-11-23        kinaba: 		alias typeof(__traits(getOverloads, this, funName)) ovTypes;
6ac127ddd0 2010-11-23        kinaba: 		alias staticMap!(firstParam, ovTypes)              fstTypes;
6ac127ddd0 2010-11-23        kinaba: 		alias DerivedToFront!(fstTypes)             fstTypes_sorted;
6ac127ddd0 2010-11-23        kinaba: 		foreach(i, T; fstTypes_sorted)
6ac127ddd0 2010-11-23        kinaba: 			static if( is(T == typeof(params[0])) ) {} else if( auto _x = cast(T)params[0] )
6ac127ddd0 2010-11-23        kinaba: 				return __traits(getOverloads, this, funName)[i](_x, params[1..$]);
6ac127ddd0 2010-11-23        kinaba: 
6ac127ddd0 2010-11-23        kinaba: 		// dynamic-overload-resolution-pattern: default behavior
6ac127ddd0 2010-11-23        kinaba: 		assert(false, text("eval() for ",typeid(e)," [",e.pos,"] is not defined"));
6ac127ddd0 2010-11-23        kinaba: 	}
6ac127ddd0 2010-11-23        kinaba: 
6ac127ddd0 2010-11-23        kinaba: private:
6ac127ddd0 2010-11-23        kinaba: 	Value eval( Str e, Layer lay, Table ctx, bool overwriteCtx=CascadeCtx )
6ac127ddd0 2010-11-23        kinaba: 	{
6ac127ddd0 2010-11-23        kinaba: 		Value v = new StrValue(e.data);
6ac127ddd0 2010-11-23        kinaba: 		if( lay==RawMacroLayer || lay==MacroLayer )
6ac127ddd0 2010-11-23        kinaba: 		{
6ac127ddd0 2010-11-23        kinaba: 			auto ast = new Table;
6ac127ddd0 2010-11-23        kinaba: 			ast.set("pos",  ValueLayer, fromPos(e.pos));
6ac127ddd0 2010-11-23        kinaba: 			ast.set("is",   ValueLayer, new StrValue("str"));
6ac127ddd0 2010-11-23        kinaba: 			ast.set("data", ValueLayer, v);
6ac127ddd0 2010-11-23        kinaba: 			return ast;
6ac127ddd0 2010-11-23        kinaba: 		}
6ac127ddd0 2010-11-23        kinaba: 		if( lay==ValueLayer )
6ac127ddd0 2010-11-23        kinaba: 			return v;
6ac127ddd0 2010-11-23        kinaba: 		return lift(v, lay, ctx, e.pos);
6ac127ddd0 2010-11-23        kinaba: 	}
6ac127ddd0 2010-11-23        kinaba: 
6ac127ddd0 2010-11-23        kinaba: 	Value eval( Int e, Layer lay, Table ctx, bool overwriteCtx=CascadeCtx )
6ac127ddd0 2010-11-23        kinaba: 	{
6ac127ddd0 2010-11-23        kinaba: 		Value v = new IntValue(e.data);
6ac127ddd0 2010-11-23        kinaba: 		if( lay==RawMacroLayer || lay==MacroLayer )
6ac127ddd0 2010-11-23        kinaba: 		{
6ac127ddd0 2010-11-23        kinaba: 			auto ast = new Table;
6ac127ddd0 2010-11-23        kinaba: 			ast.set("pos",  ValueLayer, fromPos(e.pos));
6ac127ddd0 2010-11-23        kinaba: 			ast.set("is",   ValueLayer, new StrValue("int"));
6ac127ddd0 2010-11-23        kinaba: 			ast.set("data", ValueLayer, v);
6ac127ddd0 2010-11-23        kinaba: 			return ast;
6ac127ddd0 2010-11-23        kinaba: 		}
6ac127ddd0 2010-11-23        kinaba: 		if( lay==ValueLayer )
6ac127ddd0 2010-11-23        kinaba: 			return v;
6ac127ddd0 2010-11-23        kinaba: 		return lift(v, lay, ctx, e.pos);
6ac127ddd0 2010-11-23        kinaba: 	}
6ac127ddd0 2010-11-23        kinaba: 
6ac127ddd0 2010-11-23        kinaba: 	Value eval( Var e, Layer lay, Table ctx, bool overwriteCtx=CascadeCtx )
6ac127ddd0 2010-11-23        kinaba: 	{
6ac127ddd0 2010-11-23        kinaba: 		if( lay==RawMacroLayer || lay==MacroLayer )
6ac127ddd0 2010-11-23        kinaba: 		{
6ac127ddd0 2010-11-23        kinaba: 			if( ctx.has(e.name,MacroLayer) )
6ac127ddd0 2010-11-23        kinaba: 				return ctx.get(e.name, MacroLayer, e.pos);
6ac127ddd0 2010-11-23        kinaba: 			auto ast = new Table;
6ac127ddd0 2010-11-23        kinaba: 			ast.set("pos",  ValueLayer, fromPos(e.pos));
6ac127ddd0 2010-11-23        kinaba: 			ast.set("is",   ValueLayer, new StrValue("var"));
6ac127ddd0 2010-11-23        kinaba: 			ast.set("name", ValueLayer, new StrValue(e.name));
6ac127ddd0 2010-11-23        kinaba: 			return ast;
6ac127ddd0 2010-11-23        kinaba: 		}
6ac127ddd0 2010-11-23        kinaba: 		if( lay==ValueLayer || ctx.has(e.name, lay) )
6ac127ddd0 2010-11-23        kinaba: 			return ctx.get(e.name, lay, e.pos);
6ac127ddd0 2010-11-23        kinaba: 		return lift(ctx.get(e.name, ValueLayer, e.pos), lay, ctx, e.pos);
6ac127ddd0 2010-11-23        kinaba: 	}
6ac127ddd0 2010-11-23        kinaba: 
6ac127ddd0 2010-11-23        kinaba: 	Value eval( App e, Layer lay, Table ctx, bool overwriteCtx=CascadeCtx )
6ac127ddd0 2010-11-23        kinaba: 	{
6ac127ddd0 2010-11-23        kinaba: 		Value f = eval( e.fun, lay, ctx );
6ac127ddd0 2010-11-23        kinaba: 		if( lay==RawMacroLayer || lay==MacroLayer )
6ac127ddd0 2010-11-23        kinaba: 		{
6ac127ddd0 2010-11-23        kinaba: 			if( auto ff = cast(FunValue)f )
6ac127ddd0 2010-11-23        kinaba: 				return invokeFunction(ff, e.args, MacroLayer, ctx, e.pos);
6ac127ddd0 2010-11-23        kinaba: 			Table ast = new Table;
6ac127ddd0 2010-11-23        kinaba: 			ast.set("pos",  ValueLayer, fromPos(e.pos));
6ac127ddd0 2010-11-23        kinaba: 			ast.set("is",   ValueLayer, new StrValue("app"));
6ac127ddd0 2010-11-23        kinaba: 			ast.set("fun",  ValueLayer, f);
6ac127ddd0 2010-11-23        kinaba: 			Table args = new Table;
6ac127ddd0 2010-11-23        kinaba: 			foreach_reverse(a; e.args)
6ac127ddd0 2010-11-23        kinaba: 				args = makeCons(eval(a, lay, ctx), args);
6ac127ddd0 2010-11-23        kinaba: 			ast.set("args", ValueLayer, args);
6ac127ddd0 2010-11-23        kinaba: 			return ast;
6ac127ddd0 2010-11-23        kinaba: 		}
6ac127ddd0 2010-11-23        kinaba: 		else
6ac127ddd0 2010-11-23        kinaba: 		{
6ac127ddd0 2010-11-23        kinaba: 			return invokeFunction(f, e.args, lay, ctx, e.pos);
6ac127ddd0 2010-11-23        kinaba: 		}
6ac127ddd0 2010-11-23        kinaba: 	}
6ac127ddd0 2010-11-23        kinaba: 
6ac127ddd0 2010-11-23        kinaba: 	Value eval( Fun e, Layer lay, Table ctx, bool overwriteCtx=CascadeCtx )
6ac127ddd0 2010-11-23        kinaba: 	{
6ac127ddd0 2010-11-23        kinaba: 		if( lay==RawMacroLayer || lay==MacroLayer )
6ac127ddd0 2010-11-23        kinaba: 		{
6ac127ddd0 2010-11-23        kinaba: 			Table t = new Table;
6ac127ddd0 2010-11-23        kinaba: 			t.set("pos",     ValueLayer, fromPos(e.pos));
6ac127ddd0 2010-11-23        kinaba: 			t.set("is",      ValueLayer, new StrValue("fun"));
6ac127ddd0 2010-11-23        kinaba: 			t.set("funbody", ValueLayer, eval(e.funbody,lay,ctx));
6ac127ddd0 2010-11-23        kinaba: 			Table params = new Table;
6ac127ddd0 2010-11-23        kinaba: 			foreach_reverse(p; e.params)
6ac127ddd0 2010-11-23        kinaba: 			{
6ac127ddd0 2010-11-23        kinaba: 				Table lays = new Table;
6ac127ddd0 2010-11-23        kinaba: 				foreach_reverse(l; p.layers)
6ac127ddd0 2010-11-23        kinaba: 					lays = makeCons(new StrValue(l), lays);
6ac127ddd0 2010-11-23        kinaba: 				Table kv = new Table;
6ac127ddd0 2010-11-23        kinaba: 				kv.set("name", ValueLayer, new StrValue(p.name));
6ac127ddd0 2010-11-23        kinaba: 				kv.set("layers", ValueLayer, lays);
6ac127ddd0 2010-11-23        kinaba: 				Table cons = new Table;
6ac127ddd0 2010-11-23        kinaba: 				params = makeCons(kv, params);
6ac127ddd0 2010-11-23        kinaba: 			}
6ac127ddd0 2010-11-23        kinaba: 			t.set("params", ValueLayer, params);
6ac127ddd0 2010-11-23        kinaba: 			return t;
6ac127ddd0 2010-11-23        kinaba: 		}
6ac127ddd0 2010-11-23        kinaba: 		else
6ac127ddd0 2010-11-23        kinaba: 		{
6ac127ddd0 2010-11-23        kinaba: 			return createNewFunction(e, ctx);
6ac127ddd0 2010-11-23        kinaba: 		}
6ac127ddd0 2010-11-23        kinaba: 	}
6ac127ddd0 2010-11-23        kinaba: 
6ac127ddd0 2010-11-23        kinaba: 	Value eval( Lay e, Layer lay, Table ctx, bool overwriteCtx=CascadeCtx )
f86026acb8 2010-11-21        kinaba: 	{
6ac127ddd0 2010-11-23        kinaba: 		if( lay == RawMacroLayer )
6ac127ddd0 2010-11-23        kinaba: 		{
6ac127ddd0 2010-11-23        kinaba: 			Value r = eval(e.expr, lay, ctx);
6ac127ddd0 2010-11-23        kinaba: 			auto ast = new Table; // todo: pos
6ac127ddd0 2010-11-23        kinaba: 			ast.set("pos",   ValueLayer, fromPos(e.pos));
6ac127ddd0 2010-11-23        kinaba: 			ast.set("is",    ValueLayer, new StrValue("lay"));
6ac127ddd0 2010-11-23        kinaba: 			ast.set("layer", ValueLayer, new StrValue(e.layer));
6ac127ddd0 2010-11-23        kinaba: 			ast.set("expr",  ValueLayer, r);
6ac127ddd0 2010-11-23        kinaba: 			return ast;
6ac127ddd0 2010-11-23        kinaba: 		}
6ac127ddd0 2010-11-23        kinaba: 		else
6ac127ddd0 2010-11-23        kinaba: 			return eval(e.expr, e.layer, ctx);
f86026acb8 2010-11-21        kinaba: 	}
f86026acb8 2010-11-21        kinaba: 
6ac127ddd0 2010-11-23        kinaba: 	Value eval( Let e, Layer lay, Table ctx, bool overwriteCtx=CascadeCtx )
f86026acb8 2010-11-21        kinaba: 	{
6ac127ddd0 2010-11-23        kinaba: 		// todo @macro let
6ac127ddd0 2010-11-23        kinaba: 		if( lay==RawMacroLayer || lay==MacroLayer )
a5fe6233c1 2010-11-21        kinaba: 		{
6ac127ddd0 2010-11-23        kinaba: 			auto ast = new Table; // todo: pos
6ac127ddd0 2010-11-23        kinaba: 			ast.set("pos",   ValueLayer, fromPos(e.pos));
6ac127ddd0 2010-11-23        kinaba: 			ast.set("is",    ValueLayer, new StrValue("let"));
6ac127ddd0 2010-11-23        kinaba: 			ast.set("name",  ValueLayer, new StrValue(e.name));
6ac127ddd0 2010-11-23        kinaba: 			ast.set("layer", ValueLayer, new StrValue(e.layer));
6ac127ddd0 2010-11-23        kinaba: 			ast.set("init",  ValueLayer, eval(e.init, lay, ctx));
6ac127ddd0 2010-11-23        kinaba: 			ast.set("expr",  ValueLayer, eval(e.expr, lay, ctx));
6ac127ddd0 2010-11-23        kinaba: 			return ast;
f86026acb8 2010-11-21        kinaba: 		}
f86026acb8 2010-11-21        kinaba: 		else
1c01f44f52 2010-11-13        kinaba: 		{
6ac127ddd0 2010-11-23        kinaba: 			if( !overwriteCtx )
a5fe6233c1 2010-11-21        kinaba: 				ctx = new Table(ctx, Table.Kind.NotPropagateSet);
6ac127ddd0 2010-11-23        kinaba: 			Value ri = eval(e.init, lay, ctx);
6ac127ddd0 2010-11-23        kinaba: 			string theLayer = e.layer.empty ? (lay==RawMacroLayer ? MacroLayer : lay) : e.layer;
6ac127ddd0 2010-11-23        kinaba: 			ctx.set(e.name, theLayer, ri);
6ac127ddd0 2010-11-23        kinaba: 			return eval(e.expr, lay, ctx, OverwriteCtx);
6ac127ddd0 2010-11-23        kinaba: 		}
6ac127ddd0 2010-11-23        kinaba: 	}
6ac127ddd0 2010-11-23        kinaba: 
6ac127ddd0 2010-11-23        kinaba: private:
6ac127ddd0 2010-11-23        kinaba: 	Value invokeFunction(Value _f, AST[] args, Layer lay, Table ctx, LexPosition pos=null)
6ac127ddd0 2010-11-23        kinaba: 	{
6ac127ddd0 2010-11-23        kinaba: 		if(auto f = cast(FunValue)_f)
3f6f41b558 2010-11-20        kinaba: 		{
6ac127ddd0 2010-11-23        kinaba: 			Table newCtx = new Table(f.definitionContext(), Table.Kind.NotPropagateSet);
6ac127ddd0 2010-11-23        kinaba: 			foreach(i,p; f.params())
6ac127ddd0 2010-11-23        kinaba: 				if( p.layers.empty )
6ac127ddd0 2010-11-23        kinaba: 					newCtx.set(p.name, (lay==RawMacroLayer ? MacroLayer : lay), eval(args[i], lay, ctx));
6ac127ddd0 2010-11-23        kinaba: 				else
6ac127ddd0 2010-11-23        kinaba: 					foreach(argLay; p.layers)
6ac127ddd0 2010-11-23        kinaba: 						newCtx.set(p.name, argLay, eval(args[i], argLay, ctx));
6ac127ddd0 2010-11-23        kinaba: 			return f.invoke(pos, lay, newCtx);
3f6f41b558 2010-11-20        kinaba: 		}
6ac127ddd0 2010-11-23        kinaba: 		throw genex!RuntimeException(pos, text("tried to call non-function: ",_f));
6ac127ddd0 2010-11-23        kinaba: 	}
f86026acb8 2010-11-21        kinaba: 
6ac127ddd0 2010-11-23        kinaba: 	Value lift(Value v, Layer lay, Table ctx, LexPosition pos=null)
f86026acb8 2010-11-21        kinaba: 	{
6ac127ddd0 2010-11-23        kinaba: 		// functions are automatically lifterd
6ac127ddd0 2010-11-23        kinaba: 		if( cast(FunValue) v )
6ac127ddd0 2010-11-23        kinaba: 			return v;
6ac127ddd0 2010-11-23        kinaba: 
6ac127ddd0 2010-11-23        kinaba: 		// similar to invoke Function, but with only one argument bound to ValueLayer
6ac127ddd0 2010-11-23        kinaba: 		if(auto f = cast(FunValue)ctx.get(lay, SystemLayer, pos))
6ac127ddd0 2010-11-23        kinaba: 		{
6ac127ddd0 2010-11-23        kinaba: 			Table newCtx = new Table(f.definitionContext(), Table.Kind.NotPropagateSet);
6ac127ddd0 2010-11-23        kinaba: 			auto ps = f.params();
6ac127ddd0 2010-11-23        kinaba: 			if( ps.length != 1 )
6ac127ddd0 2010-11-23        kinaba: 				throw genex!RuntimeException(pos, "lift function must take exactly one argument at "~ValueLayer~" layer");
6ac127ddd0 2010-11-23        kinaba: 			if( ps[0].layers.length==0 || ps[0].layers.length==1 && ps[0].layers[0]==ValueLayer )
6ac127ddd0 2010-11-23        kinaba: 			{
6ac127ddd0 2010-11-23        kinaba: 				newCtx.set(ps[0].name, ValueLayer, v);
6ac127ddd0 2010-11-23        kinaba: 				return f.invoke(pos, ValueLayer, newCtx);
6ac127ddd0 2010-11-23        kinaba: 			}
6ac127ddd0 2010-11-23        kinaba: 			else
6ac127ddd0 2010-11-23        kinaba: 				throw genex!RuntimeException(pos, "lift function must take exactly one argument at "~ValueLayer~" layer");
6ac127ddd0 2010-11-23        kinaba: 		}
6ac127ddd0 2010-11-23        kinaba: 		throw genex!RuntimeException(pos, "tried to call non-function");
3995a5eb6a 2010-11-21        kinaba: 	}
3995a5eb6a 2010-11-21        kinaba: 
6ac127ddd0 2010-11-23        kinaba: 	Value createNewFunction(Fun e, Table ctx)
6ac127ddd0 2010-11-23        kinaba: 	{
6ac127ddd0 2010-11-23        kinaba: 		class UserDefinedFunValue : FunValue
1c01f44f52 2010-11-13        kinaba: 		{
6ac127ddd0 2010-11-23        kinaba: 			Fun ast;
6ac127ddd0 2010-11-23        kinaba: 			Table      defCtx;
6ac127ddd0 2010-11-23        kinaba: 			override const(Parameter[]) params() { return ast.params; }
6ac127ddd0 2010-11-23        kinaba: 			override Table definitionContext() { return defCtx; }
6ac127ddd0 2010-11-23        kinaba: 
6ac127ddd0 2010-11-23        kinaba: 			this(Fun ast, Table defCtx) { this.ast=ast; this.defCtx=defCtx; }
6ac127ddd0 2010-11-23        kinaba: 			override string toString() const { return sprintf!"(function:%x:%x)"(cast(void*)ast, cast(void*)defCtx); }
6ac127ddd0 2010-11-23        kinaba: 			override bool opEquals(Object rhs_) const /// member-by-member equality
6ac127ddd0 2010-11-23        kinaba: 			{
6ac127ddd0 2010-11-23        kinaba: 				if( auto rhs = cast(typeof(this))rhs_ )
6ac127ddd0 2010-11-23        kinaba: 					return this.ast==rhs.ast && this.defCtx==rhs.defCtx;
6ac127ddd0 2010-11-23        kinaba: 				assert(false, sprintf!"Cannot compare %s with %s"(typeid(this), typeid(rhs_)));
6ac127ddd0 2010-11-23        kinaba: 			}
6ac127ddd0 2010-11-23        kinaba: 			override hash_t toHash() const /// member-by-member hash
6ac127ddd0 2010-11-23        kinaba: 			{
6ac127ddd0 2010-11-23        kinaba: 				return typeid(this.ast).getHash(&this.ast) + typeid(this.defCtx).getHash(&this.defCtx);
6ac127ddd0 2010-11-23        kinaba: 			}
6ac127ddd0 2010-11-23        kinaba: 			override int opCmp(Object rhs_) /// member-by-member compare
6ac127ddd0 2010-11-23        kinaba: 			{
6ac127ddd0 2010-11-23        kinaba: 				if( auto rhs = cast(typeof(this))rhs_ )
6ac127ddd0 2010-11-23        kinaba: 				{
6ac127ddd0 2010-11-23        kinaba: 					if(auto i = this.ast.opCmp(rhs.ast))
6ac127ddd0 2010-11-23        kinaba: 						return i;
6ac127ddd0 2010-11-23        kinaba: 					return this.defCtx.opCmp(rhs.defCtx);
6ac127ddd0 2010-11-23        kinaba: 				}
6ac127ddd0 2010-11-23        kinaba: 				assert(false, sprintf!"Cannot compare %s with %s"(typeid(this), typeid(rhs_)));
a5fe6233c1 2010-11-21        kinaba: 			}
6ac127ddd0 2010-11-23        kinaba: 
6ac127ddd0 2010-11-23        kinaba: 			override Value invoke(LexPosition pos, Layer lay, Table ctx)
a5fe6233c1 2010-11-21        kinaba: 			{
6ac127ddd0 2010-11-23        kinaba: 				if( lay == MacroLayer )
6ac127ddd0 2010-11-23        kinaba: 					return eval(ast.funbody, lay, ctx);
6ac127ddd0 2010-11-23        kinaba: 				auto macroed = tableToAST(ValueLayer, eval(e.funbody, RawMacroLayer, ctx));
6ac127ddd0 2010-11-23        kinaba: 				return eval(macroed, lay, ctx);
3f6f41b558 2010-11-20        kinaba: 			}
6ac127ddd0 2010-11-23        kinaba: 		}
6ac127ddd0 2010-11-23        kinaba: 		return new UserDefinedFunValue(e,ctx);
6ac127ddd0 2010-11-23        kinaba: 	}
6ac127ddd0 2010-11-23        kinaba: 
6ac127ddd0 2010-11-23        kinaba: public:
6ac127ddd0 2010-11-23        kinaba: 	/// TODO: move up
6ac127ddd0 2010-11-23        kinaba: 	/// TDOO: to other layers?
6ac127ddd0 2010-11-23        kinaba: 	void addPrimitive(R,T...)(string name, Layer lay, R delegate (T) dg)
6ac127ddd0 2010-11-23        kinaba: 	{
6ac127ddd0 2010-11-23        kinaba: 		class NativeFunValue : FunValue
a5fe6233c1 2010-11-21        kinaba: 		{
6ac127ddd0 2010-11-23        kinaba: 			Parameter[] params_data;
6ac127ddd0 2010-11-23        kinaba: 			override string toString() { return sprintf!"(native:%x)"(dg.funcptr); }
6ac127ddd0 2010-11-23        kinaba: 			override const(Parameter[]) params() { return params_data; }
6ac127ddd0 2010-11-23        kinaba: 			override Table definitionContext() { return new Table; } // todo: cache
6ac127ddd0 2010-11-23        kinaba: 			this(){
6ac127ddd0 2010-11-23        kinaba: 				foreach(i, Ti; T)
6ac127ddd0 2010-11-23        kinaba: 					params_data ~= new Parameter(text(i), []);
6ac127ddd0 2010-11-23        kinaba: 			}
6ac127ddd0 2010-11-23        kinaba: 			override Value invoke(LexPosition pos, Layer lay, Table ctx)
6ac127ddd0 2010-11-23        kinaba: 			{
6ac127ddd0 2010-11-23        kinaba: 				if( lay != ValueLayer )
6ac127ddd0 2010-11-23        kinaba: 					throw genex!RuntimeException(pos, "only "~ValueLayer~" layer can call native function");
6ac127ddd0 2010-11-23        kinaba: 				T typed_args;
6ac127ddd0 2010-11-23        kinaba: 				foreach(i, Ti; T) {
6ac127ddd0 2010-11-23        kinaba: 					typed_args[i] = cast(Ti) ctx.get(text(i), ValueLayer);
6ac127ddd0 2010-11-23        kinaba: 					if( typed_args[i] is null )
6ac127ddd0 2010-11-23        kinaba: 						throw genex!RuntimeException(pos, sprintf!"type mismatch on the argument %d"(i+1));
6ac127ddd0 2010-11-23        kinaba: 				}
6ac127ddd0 2010-11-23        kinaba: 				try {
6ac127ddd0 2010-11-23        kinaba: 					return dg(typed_args);
6ac127ddd0 2010-11-23        kinaba: 				} catch( RuntimeException e ) {
6ac127ddd0 2010-11-23        kinaba: 					throw e.pos is null ? new RuntimeException(pos, e.msg, e.file, e.line) : e;
6ac127ddd0 2010-11-23        kinaba: 				}
8e3db9ef20 2010-11-20        kinaba: 			}
1c01f44f52 2010-11-13        kinaba: 		}
6ac127ddd0 2010-11-23        kinaba: 		theContext.set(name, lay, new NativeFunValue);
6ac127ddd0 2010-11-23        kinaba: 	}
6ac127ddd0 2010-11-23        kinaba: }
6ac127ddd0 2010-11-23        kinaba: 
6ac127ddd0 2010-11-23        kinaba: version(unittest) import polemy.runtime;
6ac127ddd0 2010-11-23        kinaba: unittest
6ac127ddd0 2010-11-23        kinaba: {
6ac127ddd0 2010-11-23        kinaba: 	auto e = new Evaluator;
6ac127ddd0 2010-11-23        kinaba: 	enrollRuntimeLibrary(e);
6ac127ddd0 2010-11-23        kinaba: 	auto r = assert_nothrow( e.evalString(`var x = 21; x + x*x;`) );
6ac127ddd0 2010-11-23        kinaba: 	assert_eq( r, new IntValue(BigInt(21+21*21)) );
6ac127ddd0 2010-11-23        kinaba: 	assert_eq( e.globalContext.get("x",ValueLayer), new IntValue(BigInt(21)) );
6ac127ddd0 2010-11-23        kinaba: 	assert_nothrow( e.globalContext.get("x",ValueLayer) );
6ac127ddd0 2010-11-23        kinaba: 	assert_throw!RuntimeException( e.globalContext.get("y",ValueLayer) );
6ac127ddd0 2010-11-23        kinaba: }
6ac127ddd0 2010-11-23        kinaba: unittest
6ac127ddd0 2010-11-23        kinaba: {
6ac127ddd0 2010-11-23        kinaba: 	auto e = new Evaluator;
6ac127ddd0 2010-11-23        kinaba: 	enrollRuntimeLibrary(e);
6ac127ddd0 2010-11-23        kinaba: 	auto r = assert_nothrow( e.evalString(`var x = 21; var x = x + x*x;`) );
6ac127ddd0 2010-11-23        kinaba: 	assert_eq( r, new IntValue(BigInt(21+21*21)) );
6ac127ddd0 2010-11-23        kinaba: 	assert_eq( e.globalContext.get("x",ValueLayer), new IntValue(BigInt(21+21*21)) );
6ac127ddd0 2010-11-23        kinaba: 	assert_nothrow( e.globalContext.get("x",ValueLayer) );
6ac127ddd0 2010-11-23        kinaba: 	assert_throw!RuntimeException( e.globalContext.get("y",ValueLayer) );
6ac127ddd0 2010-11-23        kinaba: }
6ac127ddd0 2010-11-23        kinaba: unittest
6ac127ddd0 2010-11-23        kinaba: {
6ac127ddd0 2010-11-23        kinaba: 	auto e = new Evaluator;
6ac127ddd0 2010-11-23        kinaba: 	enrollRuntimeLibrary(e);
6ac127ddd0 2010-11-23        kinaba: 	assert_eq( e.evalString(`let x=1; let y=(let x=2); x`), new IntValue(BigInt(1)) );
6ac127ddd0 2010-11-23        kinaba: 	assert_eq( e.evalString(`let x=1; let y=(let x=2;fun(){x}); y()`), new IntValue(BigInt(2)) );
6ac127ddd0 2010-11-23        kinaba: }
6ac127ddd0 2010-11-23        kinaba: 
6ac127ddd0 2010-11-23        kinaba: unittest
6ac127ddd0 2010-11-23        kinaba: {
6ac127ddd0 2010-11-23        kinaba: 	auto e = new Evaluator;
6ac127ddd0 2010-11-23        kinaba: 	enrollRuntimeLibrary(e);
6ac127ddd0 2010-11-23        kinaba: 	assert_eq( e.evalString(`@a x=1; @b x=2; @a(x)`), new IntValue(BigInt(1)) );
6ac127ddd0 2010-11-23        kinaba: 	assert_eq( e.evalString(`@a x=1; @b x=2; @b(x)`), new IntValue(BigInt(2)) );
6ac127ddd0 2010-11-23        kinaba: 	assert_eq( e.evalString(`let x=1; let _ = (@a x=2;2); x`), new IntValue(BigInt(1)) );
6ac127ddd0 2010-11-23        kinaba: 	e = new Evaluator;
6ac127ddd0 2010-11-23        kinaba: 	assert_throw!Throwable( e.evalString(`let x=1; let _ = (@a x=2;2); @a(x)`) );
6ac127ddd0 2010-11-23        kinaba: }
6ac127ddd0 2010-11-23        kinaba: 
6ac127ddd0 2010-11-23        kinaba: unittest
6ac127ddd0 2010-11-23        kinaba: {
6ac127ddd0 2010-11-23        kinaba: 	auto e = new Evaluator;
6ac127ddd0 2010-11-23        kinaba: 	enrollRuntimeLibrary(e);
6ac127ddd0 2010-11-23        kinaba: 	assert_eq( e.evalString(`
6ac127ddd0 2010-11-23        kinaba: 		@@s(x){x};
6ac127ddd0 2010-11-23        kinaba: 		@s "+" = fun(x, y) {@value(
6ac127ddd0 2010-11-23        kinaba: 			@s(x) - @s(y)
6ac127ddd0 2010-11-23        kinaba: 		)};
6ac127ddd0 2010-11-23        kinaba: 		@s(1 + 2)
6ac127ddd0 2010-11-23        kinaba: 	`), new IntValue(BigInt(-1)) );
6ac127ddd0 2010-11-23        kinaba: }
6ac127ddd0 2010-11-23        kinaba: 
6ac127ddd0 2010-11-23        kinaba: unittest
6ac127ddd0 2010-11-23        kinaba: {
6ac127ddd0 2010-11-23        kinaba: 	auto e = new Evaluator;
6ac127ddd0 2010-11-23        kinaba: 	enrollRuntimeLibrary(e);
6ac127ddd0 2010-11-23        kinaba: 	assert_eq( e.evalString(`
6ac127ddd0 2010-11-23        kinaba: @@3(x){x};
6ac127ddd0 2010-11-23        kinaba: def incr(x) { x+1 };
6ac127ddd0 2010-11-23        kinaba: @ 3 incr(x) {@value( if(@ 3(x)+1< 3){@ 3(x)+1}else{0} )};
6ac127ddd0 2010-11-23        kinaba: def fb(n @value @3) { @3(n) };
6ac127ddd0 2010-11-23        kinaba: fb(incr(incr(incr(0))))
6ac127ddd0 2010-11-23        kinaba: 	`), new IntValue(BigInt(0)) );
423f308350 2010-11-07        kinaba: }
8d297342aa 2010-11-08        kinaba: 
5e407d7cf8 2010-11-08        kinaba: unittest
5e407d7cf8 2010-11-08        kinaba: {
6ac127ddd0 2010-11-23        kinaba: 	auto e = new Evaluator;
6ac127ddd0 2010-11-23        kinaba: 	enrollRuntimeLibrary(e);
6ac127ddd0 2010-11-23        kinaba: 	assert_nothrow( e.evalString(`
6ac127ddd0 2010-11-23        kinaba: @macro twice(x) { x; x };
6ac127ddd0 2010-11-23        kinaba: def main() { twice(1) };
6ac127ddd0 2010-11-23        kinaba: main()
6ac127ddd0 2010-11-23        kinaba: 	`) );
5e407d7cf8 2010-11-08        kinaba: }
3995a5eb6a 2010-11-21        kinaba: /*
423f308350 2010-11-07        kinaba: unittest
423f308350 2010-11-07        kinaba: {
2459e9a821 2010-11-09        kinaba: 	assert_eq( evalString(`var fac = fun(x){
633e700889 2010-11-07        kinaba: 		if(x)
633e700889 2010-11-07        kinaba: 			{ x*fac(x-1); }
633e700889 2010-11-07        kinaba: 		else
633e700889 2010-11-07        kinaba: 			{ 1; };
633e700889 2010-11-07        kinaba: 	};
2459e9a821 2010-11-09        kinaba: 	fac(10);`).val, new IntValue(BigInt(10*9*8*5040)));
2459e9a821 2010-11-09        kinaba: 	assert_eq( evalString(`var fib = fun(x){
172a537bea 2010-11-07        kinaba: 		if(x<2)
172a537bea 2010-11-07        kinaba: 			{ 1; }
172a537bea 2010-11-07        kinaba: 		else
172a537bea 2010-11-07        kinaba: 			{ fib(x-1) + fib(x-2); };
172a537bea 2010-11-07        kinaba: 	};
8e3db9ef20 2010-11-20        kinaba: 	fib(5);`).val, new IntValue(BigInt(8)));
7465fcdd7f 2010-11-09        kinaba: }
7465fcdd7f 2010-11-09        kinaba: unittest
7465fcdd7f 2010-11-09        kinaba: {
c368edbcb1 2010-11-13        kinaba: 	assert_eq( evalString(`@@t = fun(x){x+1}; @t(123)`).val, new IntValue(BigInt(124)) );
060f267779 2010-11-20        kinaba: 	// there was a bug that declaration in the first line of function definition
060f267779 2010-11-20        kinaba: 	// cannot be recursive
060f267779 2010-11-20        kinaba: 	assert_nothrow( evalString(`def foo() {
060f267779 2010-11-20        kinaba:   def bar(y) { if(y<1) {0} else {bar(0)} };
060f267779 2010-11-20        kinaba:   bar(1)
060f267779 2010-11-20        kinaba: }; foo()`) );
423f308350 2010-11-07        kinaba: }
3995a5eb6a 2010-11-21        kinaba: */