public static void Main() { String[] args = Environment.GetCommandLineArgs(); CmdIo source = new CmdIo(); try { source = new CmdIo(args); Tok tokenizer = new Tok(source); Lib funclibrary = new Lib(); Parser parser = new Parser(source, tokenizer, funclibrary); parser.parse_and_compile(); source.Finish(); } catch { source.Message("plil: compiler error."); } }
void label(Tok s) { Var var = new Var(); String label1 = "L@@" + s.getValue(); io.Message(s + "[Label]"); var.setName(label1); var.setType(Var.VAR_LABEL); try { currenttree.add(var); } catch { io.Abort("PL0111: invalid label declaration"); } if (tok.getId() != Tok.TOK_1_REL) { io.Abort("PL0112: ':' expected"); } io.Message(tok + "[:]"); last_label = s.getValue(); tok.scan(); }
void label(Tok s) { Var var = new Var(); String label1 = "L@@"+s.getValue(); io.Message(s+"[Label]"); var.setName(label1); var.setType(Var.VAR_LABEL); try { currenttree.add(var); } catch { io.Abort("PL0111: invalid label declaration"); } if (tok.getId() != Tok.TOK_1_REL) io.Abort("PL0112: ':' expected"); io.Message(tok+"[:]"); last_label = s.getValue(); tok.scan(); }
void ident_stmt(VarList curtree) { Tok s = new Tok(null); VarList vars = new VarList(); Var V; int gotType = Tok.TOK_BINARY; s.setValue(tok.getValue()); s.setId(tok.getId()); tok.scan(); switch (tok.getId()) { case Tok.TOK_1_EQUALS: if (curtree.FindByName(s.getValue()) == null) io.Abort("PL0137: undeclared variable"); V = new Var(); V.setName(s.getValue()); vars.add(V); io.Message(s+"[Variable]"); io.Message(tok+"[Equals]"); tok.scan(); gotType = bool_expr(0); typeCheckAssign(gotType, curtree.FindByName(vars.FindByIndex(0).getName()).getTypeId()); null_stmt(); break; case Tok.TOK_1_COMMA: io.Message(s+"[Variable]"); if (curtree.FindByName(s.getValue()) == null) io.Abort("PL0137: undeclared variable"); V = new Var(); V.setName(s.getValue()); vars.add(V); while (tok.getId() != Tok.TOK_1_EQUALS) { if (tok.getFirstChar() != ',') io.Abort("PL0138: ',' or '=' expected"); io.Message(tok+"[Comma]"); tok.scan(); if (tok.getId() != Tok.TOK_IDENT) io.Abort("PL0139: ident expected"); if (curtree.FindByName(tok.getValue()) == null) io.Abort("PL0137: undeclared variable"); V = new Var(); V.setName(tok.getValue()); vars.add(V); io.Message(tok+"[Variable]"); tok.scan(); } io.Message(tok+"[Assign]"); tok.scan(); gotType = bool_expr(0); typeCheckAssign(gotType, curtree.FindByName(vars.FindByIndex(0).getName()).getTypeId()); null_stmt(); break; case Tok.TOK_1_REL: label(s); break; default: io.Abort("PL0140: not found expected token ':', ',' or '='"); break; } for (int i = 0; i < vars.Length(); i ++) { typeCheckAssign(gotType, curtree.FindByName(vars.FindByIndex(i).getName()).getTypeId()); emit.Store(curtree.FindByName(vars.FindByIndex(i).getName())); if (i < vars.Length() -1) emit.Load(curtree.FindByName(vars.FindByIndex(0).getName())); } }
public Parser(Io i, Tok t, Lib l) { io = i; tok = t; lib = l; }
public Parser(Io i, Tok t, Lib l) { io = i; tok = t; lib = l; }
void ident_stmt(VarList curtree) { Tok s = new Tok(null); VarList vars = new VarList(); Var V; int gotType = Tok.TOK_BINARY; s.setValue(tok.getValue()); s.setId(tok.getId()); tok.scan(); switch (tok.getId()) { case Tok.TOK_1_EQUALS: if (curtree.FindByName(s.getValue()) == null) { io.Abort("PL0137: undeclared variable"); } V = new Var(); V.setName(s.getValue()); vars.add(V); io.Message(s + "[Variable]"); io.Message(tok + "[Equals]"); tok.scan(); gotType = bool_expr(0); typeCheckAssign(gotType, curtree.FindByName(vars.FindByIndex(0).getName()).getTypeId()); null_stmt(); break; case Tok.TOK_1_COMMA: io.Message(s + "[Variable]"); if (curtree.FindByName(s.getValue()) == null) { io.Abort("PL0137: undeclared variable"); } V = new Var(); V.setName(s.getValue()); vars.add(V); while (tok.getId() != Tok.TOK_1_EQUALS) { if (tok.getFirstChar() != ',') { io.Abort("PL0138: ',' or '=' expected"); } io.Message(tok + "[Comma]"); tok.scan(); if (tok.getId() != Tok.TOK_IDENT) { io.Abort("PL0139: ident expected"); } if (curtree.FindByName(tok.getValue()) == null) { io.Abort("PL0137: undeclared variable"); } V = new Var(); V.setName(tok.getValue()); vars.add(V); io.Message(tok + "[Variable]"); tok.scan(); } io.Message(tok + "[Assign]"); tok.scan(); gotType = bool_expr(0); typeCheckAssign(gotType, curtree.FindByName(vars.FindByIndex(0).getName()).getTypeId()); null_stmt(); break; case Tok.TOK_1_REL: label(s); break; default: io.Abort("PL0140: not found expected token ':', ',' or '='"); break; } for (int i = 0; i < vars.Length(); i++) { typeCheckAssign(gotType, curtree.FindByName(vars.FindByIndex(i).getName()).getTypeId()); emit.Store(curtree.FindByName(vars.FindByIndex(i).getName())); if (i < vars.Length() - 1) { emit.Load(curtree.FindByName(vars.FindByIndex(0).getName())); } } }