820e7198cc 2010-11-07        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:  * Syntax tree for Polemy programming language.
423f308350 2010-11-07        kinaba:  */
4198578702 2010-11-07        kinaba: module polemy.ast;
4198578702 2010-11-07        kinaba: import polemy._common;
80ff567c75 2010-11-08        kinaba: import polemy.lex;
423f308350 2010-11-07        kinaba: 
b985f3bf91 2010-11-08        kinaba: abstract class AST
423f308350 2010-11-07        kinaba: {
423f308350 2010-11-07        kinaba: 	immutable LexPosition pos;
423f308350 2010-11-07        kinaba: 	mixin SimpleConstructor;
423f308350 2010-11-07        kinaba: }
423f308350 2010-11-07        kinaba: 
b985f3bf91 2010-11-08        kinaba: class StrLiteral : AST
80ff567c75 2010-11-08        kinaba: {
80ff567c75 2010-11-08        kinaba: 	string data;
80ff567c75 2010-11-08        kinaba: 	mixin SimpleClass;
80ff567c75 2010-11-08        kinaba: }
80ff567c75 2010-11-08        kinaba: 
b985f3bf91 2010-11-08        kinaba: class IntLiteral : AST
3f5dc76a75 2010-11-07        kinaba: {
80ff567c75 2010-11-08        kinaba: 	BigInt data;
80ff567c75 2010-11-08        kinaba: 	mixin SimpleClass;
b985f3bf91 2010-11-08        kinaba: 	this(immutable LexPosition pos, long n) {super(pos); data = n;}
b985f3bf91 2010-11-08        kinaba: 	this(immutable LexPosition pos, BigInt n) {super(pos); data = n;}
b985f3bf91 2010-11-08        kinaba: 	this(immutable LexPosition pos, string n) {super(pos); data = BigInt(n);}
3f5dc76a75 2010-11-07        kinaba: }
3f5dc76a75 2010-11-07        kinaba: 
b985f3bf91 2010-11-08        kinaba: class VarExpression : AST
423f308350 2010-11-07        kinaba: {
80ff567c75 2010-11-08        kinaba: 	string var;
80ff567c75 2010-11-08        kinaba: 	mixin SimpleClass;
423f308350 2010-11-07        kinaba: }
423f308350 2010-11-07        kinaba: 
b985f3bf91 2010-11-08        kinaba: class LetExpression : AST
423f308350 2010-11-07        kinaba: {
b985f3bf91 2010-11-08        kinaba: 	string var;
aa770610d3 2010-11-08        kinaba: 	string layer;
b985f3bf91 2010-11-08        kinaba: 	AST    init;
b985f3bf91 2010-11-08        kinaba: 	AST    expr;
80ff567c75 2010-11-08        kinaba: 	mixin SimpleClass;
423f308350 2010-11-07        kinaba: }
423f308350 2010-11-07        kinaba: 
b985f3bf91 2010-11-08        kinaba: class FuncallExpression : AST
423f308350 2010-11-07        kinaba: {
b985f3bf91 2010-11-08        kinaba: 	AST   fun;
b985f3bf91 2010-11-08        kinaba: 	AST[] args;
b985f3bf91 2010-11-08        kinaba: 	this(immutable LexPosition pos, AST fun, AST[] args...)
80ff567c75 2010-11-08        kinaba: 		{ super(pos); this.fun=fun; this.args=args.dup; }
80ff567c75 2010-11-08        kinaba: 	mixin SimpleClass;
423f308350 2010-11-07        kinaba: }
423f308350 2010-11-07        kinaba: 
b985f3bf91 2010-11-08        kinaba: class FunLiteral : AST
423f308350 2010-11-07        kinaba: {
80ff567c75 2010-11-08        kinaba: 	string[] params;
b985f3bf91 2010-11-08        kinaba: 	AST      funbody;
80ff567c75 2010-11-08        kinaba: 	mixin SimpleClass;
423f308350 2010-11-07        kinaba: }
423f308350 2010-11-07        kinaba: 
80ff567c75 2010-11-08        kinaba: /// Handy Generator for AST nodes. To use this, mixin EasyAst;
80ff567c75 2010-11-08        kinaba: 
80ff567c75 2010-11-08        kinaba: /*mixin*/
b985f3bf91 2010-11-08        kinaba: template EasyAST()
423f308350 2010-11-07        kinaba: {
80ff567c75 2010-11-08        kinaba: 	template genEast(T)
80ff567c75 2010-11-08        kinaba: 		{ T genEast(P...)(P ps) { return new T(LexPosition.dummy, ps); } }
423f308350 2010-11-07        kinaba: 
b985f3bf91 2010-11-08        kinaba: 	alias genEast!StrLiteral strl;
b985f3bf91 2010-11-08        kinaba: 	alias genEast!IntLiteral intl;
aa770610d3 2010-11-08        kinaba: 	auto fun(string[] xs, AST ps) { return genEast!FunLiteral(xs,ps); } // to help type inference of D
80ff567c75 2010-11-08        kinaba: 	alias genEast!VarExpression var;
b985f3bf91 2010-11-08        kinaba: 	alias genEast!LetExpression let;
b985f3bf91 2010-11-08        kinaba: 	alias genEast!FuncallExpression call;
423f308350 2010-11-07        kinaba: }