Mercurial Hosting > luan
changeset 653:538b0ae08faa
compile IfStmt and BreakStmt
author | Franklin Schmidt <fschmidt@gmail.com> |
---|---|
date | Tue, 05 Apr 2016 13:01:04 -0600 |
parents | 067d9470184d |
children | ea7dbd2dfa65 |
files | core/src/luan/impl/ExpList.java core/src/luan/impl/LuanParser.java |
diffstat | 2 files changed, 28 insertions(+), 31 deletions(-) [+] |
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--- a/core/src/luan/impl/ExpList.java Mon Apr 04 23:26:06 2016 -0600 +++ b/core/src/luan/impl/ExpList.java Tue Apr 05 13:01:04 2016 -0600 @@ -17,7 +17,7 @@ } }; - static Expr[] toArray(List<Expressions> list) { + private static Expr[] toArray(List<Expressions> list) { Expr[] a = new Expr[list.size()]; for( int i=0; i<a.length; i++ ) { Expressions exprs = list.get(i);
--- a/core/src/luan/impl/LuanParser.java Mon Apr 04 23:26:06 2016 -0600 +++ b/core/src/luan/impl/LuanParser.java Tue Apr 05 13:01:04 2016 -0600 @@ -254,7 +254,7 @@ || (stmt=DoStmt()) != null || (stmt=WhileStmt()) != null || (stmt=RepeatStmt()) != null - || (stmt=stmtStr(IfStmt())) != null + || (stmt=IfStmt()) != null || (stmt=SetStmt()) != null || (stmt=ExpressionsStmt()) != null ) { @@ -351,8 +351,7 @@ return parser.failure(null); if( frame.loops <= 0 ) throw parser.exception("'break' outside of loop"); -// return parser.success( new StmtString("break;\n") ); - return parser.success( new StmtString(new BreakStmt()) ); + return parser.success( new StmtString("break;\n") ); } int forCounter = 0; @@ -390,7 +389,6 @@ +"if( " + firstVar.code + "==null ) break;\n" + loop.code +"}" - +"} catch(BreakException e) {\n" +"} finally {\n" +"$luan.stackClear("+stackStart+","+symbolsSize()+");\n" +"}\n" @@ -477,11 +475,9 @@ StmtString loop = RequiredLoopBlock(); RequiredKeyword("end",In.NOTHING); String code = "" - +"try {\n" - +" while( $Luan.checkBoolean(" + cnd.code + ") ) {\n" + +"while( $Luan.checkBoolean(" + cnd.code + ") ) {\n" + loop.code - +" }\n" - +"} catch(BreakException e) {}\n" + +"}\n" ; return parser.success( new StmtString(code) ); } @@ -494,11 +490,9 @@ RequiredKeyword("until",In.NOTHING); ExpString cnd = RequiredExpr(In.NOTHING).expr(); String code = "" - +"try {\n" - +" do {\n" + +"do {\n" + loop.code - +" } while( !$Luan.checkBoolean(" + cnd.code + ") );\n" - +"} catch(BreakException e) {}\n" + +"} while( !$Luan.checkBoolean(" + cnd.code + ") );\n" ; return parser.success( new StmtString(code) ); } @@ -510,26 +504,30 @@ return stmt; } - private Stmt IfStmt() throws ParseException { + private StmtString IfStmt() throws ParseException { parser.begin(); if( !Keyword("if",In.NOTHING) ) return parser.failure(null); - return parser.success( IfStmt2() ); - } - - private Stmt IfStmt2() throws ParseException { - parser.currentIndex(); - Expr cnd = expr(exp(RequiredExpr(In.NOTHING))); + StringBuilder sb = new StringBuilder(); + ExpString cnd; + StmtString block; + cnd = RequiredExpr(In.NOTHING).expr(); RequiredKeyword("then",In.NOTHING); - Stmt thenBlock = stmt(RequiredBlock()); - Stmt elseBlock; - if( Keyword("elseif",In.NOTHING) ) { - elseBlock = IfStmt2(); - } else { - elseBlock = Keyword("else",In.NOTHING) ? stmt(RequiredBlock()) : Stmt.EMPTY; - RequiredKeyword("end",In.NOTHING); + block = RequiredBlock(); + sb.append( "if( $Luan.checkBoolean(" ).append( cnd.code ).append( ") ) {\n" ).append( block.code ); + while( Keyword("elseif",In.NOTHING) ) { + cnd = RequiredExpr(In.NOTHING).expr(); + RequiredKeyword("then",In.NOTHING); + block = RequiredBlock(); + sb.append( "} else if( $Luan.checkBoolean(" ).append( cnd.code ).append( ") ) {\n" ).append( block.code ); } - return new IfStmt(cnd,thenBlock,elseBlock); + if( Keyword("else",In.NOTHING) ) { + block = RequiredBlock(); + sb.append( "} else {\n" ).append( block.code ); + } + RequiredKeyword("end",In.NOTHING); + sb.append( "}\n" ); + return parser.success( new StmtString(sb.toString()) ); } private StmtString SetStmt() throws ParseException { @@ -556,7 +554,6 @@ String varsStr = varsToString(vars.toArray(new Settable[0])); String code = "$Luan.set($luan," + varsStr + "," + values.code + "); "; return parser.success( new StmtString(code) ); -//qqq } private static String varsToString(Settable[] vars) { @@ -1520,9 +1517,9 @@ private ExpString exp(List<ExpString> list) { switch(list.size()) { case 0: - return new ExpString("null",true,false); + return new ExpString("LuanFunction.NOTHING",false,false); case 1: - return list.get(0).expr(); + return list.get(0); default: int lastI = list.size() - 1; StringBuilder sb = new StringBuilder();