8de5b49cdf 2010-11-09        kinaba: /**
b0d8d7875b 2010-11-08        kinaba:  * Authors: k.inaba
b0d8d7875b 2010-11-08        kinaba:  * License: NYSL 0.9982 http://www.kmonos.net/nysl/
b0d8d7875b 2010-11-08        kinaba:  *
b0d8d7875b 2010-11-08        kinaba:  * Runtime data structures for Polemy programming language.
b0d8d7875b 2010-11-08        kinaba:  */
b0d8d7875b 2010-11-08        kinaba: module polemy.value;
b0d8d7875b 2010-11-08        kinaba: import polemy._common;
aa770610d3 2010-11-08        kinaba: import polemy.lex;
3f6f41b558 2010-11-20        kinaba: import polemy.ast;
b0d8d7875b 2010-11-08        kinaba: 
aa770610d3 2010-11-08        kinaba: /// Raised when something went wrong in runtime
aa770610d3 2010-11-08        kinaba: 
aa770610d3 2010-11-08        kinaba: class RuntimeException : Exception
b0d8d7875b 2010-11-08        kinaba: {
7465fcdd7f 2010-11-09        kinaba: 	mixin ExceptionWithPosition;
b0d8d7875b 2010-11-08        kinaba: }
aa770610d3 2010-11-08        kinaba: 
aa770610d3 2010-11-08        kinaba: /// Runtime values of Polemy
b0d8d7875b 2010-11-08        kinaba: 
b0d8d7875b 2010-11-08        kinaba: abstract class Value
b0d8d7875b 2010-11-08        kinaba: {
b0d8d7875b 2010-11-08        kinaba: }
b0d8d7875b 2010-11-08        kinaba: 
515502e8d1 2010-11-20        kinaba: ///
b0d8d7875b 2010-11-08        kinaba: class IntValue : Value
b0d8d7875b 2010-11-08        kinaba: {
b0d8d7875b 2010-11-08        kinaba: 	BigInt data;
aa770610d3 2010-11-08        kinaba: 
7465fcdd7f 2010-11-09        kinaba: 	mixin SimpleClass;
aa770610d3 2010-11-08        kinaba: 	override string toString() const { return std.bigint.toDecimalString(cast(BigInt)data); }
b0d8d7875b 2010-11-08        kinaba: }
b0d8d7875b 2010-11-08        kinaba: 
515502e8d1 2010-11-20        kinaba: ///
b0d8d7875b 2010-11-08        kinaba: class StrValue : Value
b0d8d7875b 2010-11-08        kinaba: {
b0d8d7875b 2010-11-08        kinaba: 	string data;
aa770610d3 2010-11-08        kinaba: 
7465fcdd7f 2010-11-09        kinaba: 	mixin SimpleClass;
b0d8d7875b 2010-11-08        kinaba: 	override string toString() const { return data; }
b0d8d7875b 2010-11-08        kinaba: }
b0d8d7875b 2010-11-08        kinaba: 
515502e8d1 2010-11-20        kinaba: ///
b0d8d7875b 2010-11-08        kinaba: class FunValue : Value
b0d8d7875b 2010-11-08        kinaba: {
7465fcdd7f 2010-11-09        kinaba: 	Value delegate(immutable LexPosition pos, string lay, Value[]) data;
aa770610d3 2010-11-08        kinaba: 
b0d8d7875b 2010-11-08        kinaba: 	mixin SimpleConstructor;
aa770610d3 2010-11-08        kinaba: 	alias data call;
b0d8d7875b 2010-11-08        kinaba: 	override string toString() const { return sprintf!"(function:%s:%s)"(data.ptr,data.funcptr); }
5afe8e3f26 2010-11-13        kinaba: }
5afe8e3f26 2010-11-13        kinaba: 
515502e8d1 2010-11-20        kinaba: ///
5afe8e3f26 2010-11-13        kinaba: class UndValue : Value
5afe8e3f26 2010-11-13        kinaba: {
5afe8e3f26 2010-11-13        kinaba: 	mixin SimpleClass;
5afe8e3f26 2010-11-13        kinaba: 	override string toString() const { return "<undefined>"; }
515502e8d1 2010-11-20        kinaba: }
515502e8d1 2010-11-20        kinaba: 
515502e8d1 2010-11-20        kinaba: /// Named Constructor for FunValue
515502e8d1 2010-11-20        kinaba: 
515502e8d1 2010-11-20        kinaba: FunValue nativef(Value delegate(immutable LexPosition pos, Layer lay, Value[] args) dg)
515502e8d1 2010-11-20        kinaba: {
515502e8d1 2010-11-20        kinaba: 	return new FunValue(dg);
515502e8d1 2010-11-20        kinaba: }
515502e8d1 2010-11-20        kinaba: 
515502e8d1 2010-11-20        kinaba: /// Named Constructor for FunValue
515502e8d1 2010-11-20        kinaba: 
515502e8d1 2010-11-20        kinaba: FunValue native(R,T...)(R delegate (T) dg)
515502e8d1 2010-11-20        kinaba: {
515502e8d1 2010-11-20        kinaba: 	return nativef( delegate Value(immutable LexPosition pos, Layer lay, Value[] args) {
515502e8d1 2010-11-20        kinaba: 		if( lay != "@v" )
515502e8d1 2010-11-20        kinaba: 			throw genex!RuntimeException(pos, "only @v layer can call native function");
515502e8d1 2010-11-20        kinaba: 		if( T.length != args.length )
515502e8d1 2010-11-20        kinaba: 			throw genex!RuntimeException(pos, "argument number mismatch!");
515502e8d1 2010-11-20        kinaba: 		T typed_args;
515502e8d1 2010-11-20        kinaba: 		foreach(i, Ti; T)
515502e8d1 2010-11-20        kinaba: 		{
515502e8d1 2010-11-20        kinaba: 			typed_args[i] = cast(Ti) args[i];
515502e8d1 2010-11-20        kinaba: 			if( typed_args[i] is null )
515502e8d1 2010-11-20        kinaba: 				throw genex!RuntimeException(pos, sprintf!"type mismatch on the argument %d"(i+1));
515502e8d1 2010-11-20        kinaba: 		}
515502e8d1 2010-11-20        kinaba: 		try {
515502e8d1 2010-11-20        kinaba: 			return dg(typed_args);
515502e8d1 2010-11-20        kinaba: 		} catch( RuntimeException e ) {
515502e8d1 2010-11-20        kinaba: 			throw e.pos is null ? new RuntimeException(pos, e.msg, e.file, e.line) : e;
515502e8d1 2010-11-20        kinaba: 		}
515502e8d1 2010-11-20        kinaba: 	});
aa770610d3 2010-11-08        kinaba: }
aa770610d3 2010-11-08        kinaba: 
aa770610d3 2010-11-08        kinaba: /// Layer ID
aa770610d3 2010-11-08        kinaba: 
aa770610d3 2010-11-08        kinaba: alias string Layer;
aa770610d3 2010-11-08        kinaba: 
aa770610d3 2010-11-08        kinaba: /// Context (variable environment)
aa770610d3 2010-11-08        kinaba: /// Simlar to prototype chain of ECMAScript etc.
aa770610d3 2010-11-08        kinaba: /// But extended with the notion of "Layer"
aa770610d3 2010-11-08        kinaba: 
aa770610d3 2010-11-08        kinaba: class Table : Value
b0d8d7875b 2010-11-08        kinaba: {
aa770610d3 2010-11-08        kinaba: 	enum Kind {PropagateSet, NotPropagateSet};
b0d8d7875b 2010-11-08        kinaba: 
aa770610d3 2010-11-08        kinaba: 	this( Table proto=null, Kind k = Kind.PropagateSet )
aa770610d3 2010-11-08        kinaba: 		{ this.prototype = proto; this.kind = k; }
aa770610d3 2010-11-08        kinaba: 
8de5b49cdf 2010-11-09        kinaba: 	void set(string i, Layer lay, Value v, in LexPosition pos=null)
8de5b49cdf 2010-11-09        kinaba: 	{
8de5b49cdf 2010-11-09        kinaba: 		if( setIfExist(i, lay, v) )
8de5b49cdf 2010-11-09        kinaba: 			return;
8de5b49cdf 2010-11-09        kinaba: 		data[i][lay] = v;
8de5b49cdf 2010-11-09        kinaba: 	}
8de5b49cdf 2010-11-09        kinaba: 
515502e8d1 2010-11-20        kinaba: 	bool has(string i, Layer lay, in LexPosition pos=null)
515502e8d1 2010-11-20        kinaba: 	{
515502e8d1 2010-11-20        kinaba: 		if( i in data ) {
515502e8d1 2010-11-20        kinaba: 			if( lay !in data[i] )
515502e8d1 2010-11-20        kinaba: 				return false;
515502e8d1 2010-11-20        kinaba: 			return true;
515502e8d1 2010-11-20        kinaba: 		}
515502e8d1 2010-11-20        kinaba: 		if( prototype is null )
515502e8d1 2010-11-20        kinaba: 			return false;
515502e8d1 2010-11-20        kinaba: 		return prototype.has(i, lay, pos);
515502e8d1 2010-11-20        kinaba: 	}
515502e8d1 2010-11-20        kinaba: 
8de5b49cdf 2010-11-09        kinaba: 	Value get(string i, Layer lay, in LexPosition pos=null)
aa770610d3 2010-11-08        kinaba: 	{
5afe8e3f26 2010-11-13        kinaba: 		if( i in data ) {
515502e8d1 2010-11-20        kinaba: 			// [TODO] consider forwarding to proto also in this case
5afe8e3f26 2010-11-13        kinaba: 			if( lay !in data[i] )
5afe8e3f26 2010-11-13        kinaba: 				throw genex!RuntimeException(pos, sprintf!"variable %s is not set in layer %s"(i,lay));
8de5b49cdf 2010-11-09        kinaba: 			return data[i][lay];
5afe8e3f26 2010-11-13        kinaba: 		}
8de5b49cdf 2010-11-09        kinaba: 		if( prototype is null )
8de5b49cdf 2010-11-09        kinaba: 			throw new RuntimeException(pos, sprintf!"variable %s not found"(i));
5afe8e3f26 2010-11-13        kinaba: 		return prototype.get(i, lay, pos);
515502e8d1 2010-11-20        kinaba: 	}
515502e8d1 2010-11-20        kinaba: 
3f6f41b558 2010-11-20        kinaba: 	T access(T,S...)( Layer lay, string path, S rest )
3f6f41b558 2010-11-20        kinaba: 	{
3f6f41b558 2010-11-20        kinaba: 		static if( rest.length == 0 )
3f6f41b558 2010-11-20        kinaba: 		{
3f6f41b558 2010-11-20        kinaba: 			if( this.has(path, lay) )
3f6f41b558 2010-11-20        kinaba: 				return cast(T) this.get(path, lay);
3f6f41b558 2010-11-20        kinaba: 		}
3f6f41b558 2010-11-20        kinaba: 		else
3f6f41b558 2010-11-20        kinaba: 		{
3f6f41b558 2010-11-20        kinaba: 			if(auto next = this.access!Table(lay,path))
3f6f41b558 2010-11-20        kinaba: 				return next.access!T(lay,rest);
3f6f41b558 2010-11-20        kinaba: 		}
3f6f41b558 2010-11-20        kinaba: 		return null;
3f6f41b558 2010-11-20        kinaba: 	}
3f6f41b558 2010-11-20        kinaba: 
aa770610d3 2010-11-08        kinaba: private:
aa770610d3 2010-11-08        kinaba: 	Table                prototype;
aa770610d3 2010-11-08        kinaba: 	Kind                 kind;
aa770610d3 2010-11-08        kinaba: 	Value[Layer][string] data;
aa770610d3 2010-11-08        kinaba: 
aa770610d3 2010-11-08        kinaba: 	bool setIfExist(string i, Layer lay, Value v)
b0d8d7875b 2010-11-08        kinaba: 	{
aa770610d3 2010-11-08        kinaba: 		if( i in data )
aa770610d3 2010-11-08        kinaba: 		{
aa770610d3 2010-11-08        kinaba: 			data[i][lay] = v;
aa770610d3 2010-11-08        kinaba: 			return true;
aa770610d3 2010-11-08        kinaba: 		}
aa770610d3 2010-11-08        kinaba: 		if( kind==Kind.PropagateSet && prototype !is null )
aa770610d3 2010-11-08        kinaba: 			return prototype.setIfExist(i, lay, v);
aa770610d3 2010-11-08        kinaba: 		return false;
b0d8d7875b 2010-11-08        kinaba: 	}
aa770610d3 2010-11-08        kinaba: }
aa770610d3 2010-11-08        kinaba: 
aa770610d3 2010-11-08        kinaba: unittest
aa770610d3 2010-11-08        kinaba: {
aa770610d3 2010-11-08        kinaba: 	Table c0 = new Table;
aa770610d3 2010-11-08        kinaba: 	Table c01 = new Table(c0, Table.Kind.NotPropagateSet);
aa770610d3 2010-11-08        kinaba: 	Table c012 = new Table(c01, Table.Kind.PropagateSet);
aa770610d3 2010-11-08        kinaba: 	Table c013 = new Table(c01, Table.Kind.PropagateSet);
aa770610d3 2010-11-08        kinaba: 
7465fcdd7f 2010-11-09        kinaba: 	assert_nothrow( c012.set("x", "@v", new IntValue(BigInt(12))) );
7465fcdd7f 2010-11-09        kinaba: 	assert_throw!RuntimeException( c013.get("x", "@v") );
7465fcdd7f 2010-11-09        kinaba: 	assert_nothrow( c013.set("x", "@v", new IntValue(BigInt(13))) );
7465fcdd7f 2010-11-09        kinaba: 	assert_eq( c013.get("x", "@v"), new IntValue(BigInt(13)) );
7465fcdd7f 2010-11-09        kinaba: 	assert_eq( c012.get("x", "@v"), new IntValue(BigInt(12)) );
7465fcdd7f 2010-11-09        kinaba: 	assert_throw!RuntimeException( c01.get("x", "@v") );
7465fcdd7f 2010-11-09        kinaba: 
7465fcdd7f 2010-11-09        kinaba: 	assert_nothrow( c01.set("y", "@v", new IntValue(BigInt(1))) );
7465fcdd7f 2010-11-09        kinaba: 	assert_eq( c013.get("y", "@v"), new IntValue(BigInt(1)) );
7465fcdd7f 2010-11-09        kinaba: 	assert_eq( c012.get("y", "@v"), new IntValue(BigInt(1)) );
7465fcdd7f 2010-11-09        kinaba: 	assert_eq( c01.get("y", "@v"), new IntValue(BigInt(1)) );
aa770610d3 2010-11-08        kinaba: 
7465fcdd7f 2010-11-09        kinaba: 	assert_nothrow( c0.set("z", "@v", new IntValue(BigInt(0))) );
7465fcdd7f 2010-11-09        kinaba: 	assert_eq( c013.get("z", "@v"), new IntValue(BigInt(0)) );
7465fcdd7f 2010-11-09        kinaba: 	assert_eq( c012.get("z", "@v"), new IntValue(BigInt(0)) );
7465fcdd7f 2010-11-09        kinaba: 	assert_eq( c01.get("z", "@v"), new IntValue(BigInt(0)) );
7465fcdd7f 2010-11-09        kinaba: 	assert_eq( c0.get("z", "@v"), new IntValue(BigInt(0)) );
aa770610d3 2010-11-08        kinaba: 
7465fcdd7f 2010-11-09        kinaba: 	assert_nothrow( c012.set("y", "@v", new IntValue(BigInt(444))) );
7465fcdd7f 2010-11-09        kinaba: 	assert_eq( c013.get("y", "@v"), new IntValue(BigInt(444)) );
7465fcdd7f 2010-11-09        kinaba: 	assert_eq( c012.get("y", "@v"), new IntValue(BigInt(444)) );
7465fcdd7f 2010-11-09        kinaba: 	assert_eq( c01.get("y", "@v"), new IntValue(BigInt(444)) );
aa770610d3 2010-11-08        kinaba: 
7465fcdd7f 2010-11-09        kinaba: 	assert_nothrow( c012.set("z", "@v", new IntValue(BigInt(555))) );
7465fcdd7f 2010-11-09        kinaba: 	assert_eq( c013.get("z", "@v"), new IntValue(BigInt(0)) );
7465fcdd7f 2010-11-09        kinaba: 	assert_eq( c012.get("z", "@v"), new IntValue(BigInt(555)) );
7465fcdd7f 2010-11-09        kinaba: 	assert_eq( c01.get("z", "@v"), new IntValue(BigInt(0)) );
7465fcdd7f 2010-11-09        kinaba: 	assert_eq( c0.get("z", "@v"), new IntValue(BigInt(0)) );
aa770610d3 2010-11-08        kinaba: 
aa770610d3 2010-11-08        kinaba: 	// [TODO] define the semantics and test @layers
3f6f41b558 2010-11-20        kinaba: }
3f6f41b558 2010-11-20        kinaba: 
3f6f41b558 2010-11-20        kinaba: immutable(LexPosition) extractPos( Table t )
3f6f41b558 2010-11-20        kinaba: {
3f6f41b558 2010-11-20        kinaba: 	Layer theLayer = "@v";
3f6f41b558 2010-11-20        kinaba: 	if(auto tt = t.access!Table(theLayer, "pos"))
3f6f41b558 2010-11-20        kinaba: 	{
3f6f41b558 2010-11-20        kinaba: 		auto fn = tt.access!StrValue(theLayer, "filename");
3f6f41b558 2010-11-20        kinaba: 		auto ln = tt.access!IntValue(theLayer, "lineno");
3f6f41b558 2010-11-20        kinaba: 		auto cl = tt.access!IntValue(theLayer, "column");
3f6f41b558 2010-11-20        kinaba: 		if(fn !is null && ln !is null && cl !is null)
3f6f41b558 2010-11-20        kinaba: 			return new immutable(LexPosition)(fn.data,cast(int)ln.data.toInt,cast(int)cl.data.toInt);
3f6f41b558 2010-11-20        kinaba: 	}
3f6f41b558 2010-11-20        kinaba: 	return null;
3f6f41b558 2010-11-20        kinaba: }
3f6f41b558 2010-11-20        kinaba: 
3f6f41b558 2010-11-20        kinaba: Value[] tableAsConsList( Layer theLayer, Table t )
3f6f41b558 2010-11-20        kinaba: {
3f6f41b558 2010-11-20        kinaba: 	Value[] result;
3f6f41b558 2010-11-20        kinaba: 	while(t)
3f6f41b558 2010-11-20        kinaba: 		if(auto v  = t.access!Value(theLayer, "car"))
3f6f41b558 2010-11-20        kinaba: 		{
3f6f41b558 2010-11-20        kinaba: 			result ~= v;
3f6f41b558 2010-11-20        kinaba: 			t = t.access!Table(theLayer, "cdr");
3f6f41b558 2010-11-20        kinaba: 		}
3f6f41b558 2010-11-20        kinaba: 		else
3f6f41b558 2010-11-20        kinaba: 			break;
3f6f41b558 2010-11-20        kinaba: 	return result;
3f6f41b558 2010-11-20        kinaba: }
3f6f41b558 2010-11-20        kinaba: 
3f6f41b558 2010-11-20        kinaba: AST[] tableToASTList( Layer theLayer, Table t )
3f6f41b558 2010-11-20        kinaba: {
3f6f41b558 2010-11-20        kinaba: 	AST[] result;
3f6f41b558 2010-11-20        kinaba: 	foreach(v; tableAsConsList(theLayer, t))
3f6f41b558 2010-11-20        kinaba: 		if(auto t = cast(Table)v)
3f6f41b558 2010-11-20        kinaba: 			result ~= tableToAST(theLayer,t);
3f6f41b558 2010-11-20        kinaba: 		else
3f6f41b558 2010-11-20        kinaba: 			throw genex!RuntimeException(cast(LexPosition)null, "Invalid AST (non-table in cons-list)");
3f6f41b558 2010-11-20        kinaba: 	return result;
3f6f41b558 2010-11-20        kinaba: }
3f6f41b558 2010-11-20        kinaba: 
3f6f41b558 2010-11-20        kinaba: AST tableToAST( Layer theLayer, Table t )
3f6f41b558 2010-11-20        kinaba: {
3f6f41b558 2010-11-20        kinaba: 	auto nodeType = t.access!StrValue(theLayer, "is");
3f6f41b558 2010-11-20        kinaba: 	if( nodeType is null )
3f6f41b558 2010-11-20        kinaba: 		throw genex!RuntimeException(cast(LexPosition)null, "Invalid AST {is:(not string)}");
3f6f41b558 2010-11-20        kinaba: 	auto pos = extractPos(t);
3f6f41b558 2010-11-20        kinaba: 	switch(nodeType.data)
3f6f41b558 2010-11-20        kinaba: 	{
3f6f41b558 2010-11-20        kinaba: 	case "int":
3f6f41b558 2010-11-20        kinaba: 		if(auto v = t.access!IntValue(theLayer, "data"))
3f6f41b558 2010-11-20        kinaba: 			return new IntLiteral(pos, v.data);
3f6f41b558 2010-11-20        kinaba: 		throw genex!RuntimeException(cast(LexPosition)null, `Invalid AST {is:"int", data:(not int)}`);
3f6f41b558 2010-11-20        kinaba: 	case "str":
3f6f41b558 2010-11-20        kinaba: 		if(auto v = t.access!StrValue(theLayer, "data"))
3f6f41b558 2010-11-20        kinaba: 			return new StrLiteral(pos, v.data);
3f6f41b558 2010-11-20        kinaba: 		throw genex!RuntimeException(cast(LexPosition)null, `Invalid AST {is:"str", data:(not string)}`);
3f6f41b558 2010-11-20        kinaba: 	case "var":
3f6f41b558 2010-11-20        kinaba: 		if(auto v = t.access!StrValue(theLayer, "name"))
3f6f41b558 2010-11-20        kinaba: 			return new VarExpression(pos, v.data);
3f6f41b558 2010-11-20        kinaba: 		throw genex!RuntimeException(cast(LexPosition)null, `Invalid AST {is:"var", name:(not string)}`);
3f6f41b558 2010-11-20        kinaba: 	case "lay":
3f6f41b558 2010-11-20        kinaba: 		if(auto v = t.access!StrValue(theLayer, "layer"))
3f6f41b558 2010-11-20        kinaba: 			if(auto e = t.access!Table(theLayer, "expr"))
3f6f41b558 2010-11-20        kinaba: 				return new LayeredExpression(pos, v.data, tableToAST(theLayer,e));
3f6f41b558 2010-11-20        kinaba: 			else
3f6f41b558 2010-11-20        kinaba: 				throw genex!RuntimeException(cast(LexPosition)null, `Invalid AST {is:"lay", expr:(not table)}`);
3f6f41b558 2010-11-20        kinaba: 		throw genex!RuntimeException(cast(LexPosition)null, `Invalid AST {is:"lay", layer:(not string)}`);
3f6f41b558 2010-11-20        kinaba: 	case "let":
3f6f41b558 2010-11-20        kinaba: 		if(auto n = t.access!StrValue(theLayer, "name"))
3f6f41b558 2010-11-20        kinaba: 		if(auto e = t.access!Table(theLayer, "init"))
3f6f41b558 2010-11-20        kinaba: 		if(auto b = t.access!Table(theLayer, "expr"))
3f6f41b558 2010-11-20        kinaba: 		{
3f6f41b558 2010-11-20        kinaba: 			string nn = n.data;
3f6f41b558 2010-11-20        kinaba: 			auto ee = tableToAST(theLayer, e);
3f6f41b558 2010-11-20        kinaba: 			auto bb = tableToAST(theLayer, b);
3f6f41b558 2010-11-20        kinaba: 			Layer lay="";
3f6f41b558 2010-11-20        kinaba: 			if(auto l = t.access!StrValue(theLayer, "layer"))
3f6f41b558 2010-11-20        kinaba: 				lay = l.data;
3f6f41b558 2010-11-20        kinaba: 			return new LetExpression(pos, nn, lay, ee, bb);
3f6f41b558 2010-11-20        kinaba: 		}
3f6f41b558 2010-11-20        kinaba: 		throw genex!RuntimeException(cast(LexPosition)null, `Invalid AST {is:"let", name:"???", init:"???", expr:"???"}`);
3f6f41b558 2010-11-20        kinaba: 	case "app":
3f6f41b558 2010-11-20        kinaba: 		if(auto f = t.access!Table(theLayer, "fun"))
3f6f41b558 2010-11-20        kinaba: 		if(auto a = t.access!Table(theLayer, "arg"))
3f6f41b558 2010-11-20        kinaba: 			return new FuncallExpression(pos, tableToAST(theLayer,f), tableToASTList(theLayer,a));
3f6f41b558 2010-11-20        kinaba: 		throw genex!RuntimeException(cast(LexPosition)null, `Invalid AST {is:"app", fun:???, arg:???}`);
3f6f41b558 2010-11-20        kinaba: 	case "fun":
3f6f41b558 2010-11-20        kinaba: 		if(auto p = t.access!Table(theLayer, "param"))
3f6f41b558 2010-11-20        kinaba: 		if(auto b = t.access!Table(theLayer, "body"))
3f6f41b558 2010-11-20        kinaba: 		{
3f6f41b558 2010-11-20        kinaba: 			Parameter[] ps;
3f6f41b558 2010-11-20        kinaba: 			foreach(v; tableAsConsList(theLayer, p))
3f6f41b558 2010-11-20        kinaba: 			{
3f6f41b558 2010-11-20        kinaba: 				if(auto tt = cast(Table)v)
3f6f41b558 2010-11-20        kinaba: 				if(auto ss = tt.access!StrValue(theLayer, "name"))
3f6f41b558 2010-11-20        kinaba: 				if(auto ll = tt.access!Table(theLayer, "layer"))
3f6f41b558 2010-11-20        kinaba: 				{
3f6f41b558 2010-11-20        kinaba: 					Layer[] ls;
3f6f41b558 2010-11-20        kinaba: 					foreach(lll; tableAsConsList(theLayer, ll))
3f6f41b558 2010-11-20        kinaba: 						if(auto l = cast(StrValue)lll)
3f6f41b558 2010-11-20        kinaba: 							ls ~= l.data;
3f6f41b558 2010-11-20        kinaba: 						else
3f6f41b558 2010-11-20        kinaba: 							throw genex!RuntimeException(cast(LexPosition)null, `Invalid AST {bad fun params}`);
3f6f41b558 2010-11-20        kinaba: 					ps ~= new Parameter(ss.data, ls);
3f6f41b558 2010-11-20        kinaba: 					continue;
3f6f41b558 2010-11-20        kinaba: 				}
3f6f41b558 2010-11-20        kinaba: 				else
3f6f41b558 2010-11-20        kinaba: 				{
3f6f41b558 2010-11-20        kinaba: 					Layer[] emp;
3f6f41b558 2010-11-20        kinaba: 					ps ~= new Parameter(ss.data, emp);
3f6f41b558 2010-11-20        kinaba: 				}
3f6f41b558 2010-11-20        kinaba: 				throw genex!RuntimeException(cast(LexPosition)null, `Invalid AST {bad fun params}`);
3f6f41b558 2010-11-20        kinaba: 			}
3f6f41b558 2010-11-20        kinaba: 			auto bb = tableToAST(theLayer, b);
3f6f41b558 2010-11-20        kinaba: 			return new FunLiteral(pos,ps,bb);
3f6f41b558 2010-11-20        kinaba: 		}
3f6f41b558 2010-11-20        kinaba: 		throw genex!RuntimeException(cast(LexPosition)null, `Invalid AST {is:"fun", param:???, body:???}`);
3f6f41b558 2010-11-20        kinaba: 	default:
3f6f41b558 2010-11-20        kinaba: 		throw genex!RuntimeException(cast(LexPosition)null, sprintf!`Invalid AST {is: "%s"} unknown`(nodeType.data));
3f6f41b558 2010-11-20        kinaba: 	}
b0d8d7875b 2010-11-08        kinaba: }