编译原理实验三语义分析JavaCC代码

/* Generated By:JavaCC: Do not edit this line. ifParse.java */ package ifelsesematic; import java.io.FileInputStream; import java.io.FileNotFoundException; import java.util.ArrayList; @SuppressWarnings("all") public class ifParse implements ifParseConstants { public int count=0; /*四元式标号*/ public static ArrayList<Sys> sysList = new ArrayList<Sys>(); public int ncount=0; /*临时变量下标*/ public static void main(String args[]) throws ParseException { FileInputStream fileStream; try { fileStream = new FileInputStream("test1.c"); ifParse parser = new ifParse(fileStream); System.out.println("Reading from standard input..."); System.out.println("Enter c programe only main() with only while();\" :"); try { switch (parser.start()) { case 0: System.out.println("OK."); break; case 1: System.out.println("Goodbye."); break; default: break; } for(int i = 0; i<sysList.size(); i++){ System.out.println(sysList.get(i)); } } catch (Exception e) { System.out.println("NOK."); System.out.println(e.getMessage()); parser.ReInit(System.in); } catch (Error e) { System.out.println("Oops."); System.out.println(e.getMessage()); } } catch (FileNotFoundException e1) { e1.printStackTrace(); } } final public int start() throws ParseException { switch ((jj_ntk==-1)?jj_ntk():jj_ntk) { case VOID: Procedure(); jj_consume_token(0); {if (true) return 0;} break; case 0: jj_consume_token(0); {if (true) return 1;} break; default: jj_la1[0] = jj_gen; jj_consume_token(-1); throw new ParseException(); } throw new Error("Missing return statement in function"); } /*处理主程序*/ final public void Procedure() throws ParseException { jj_consume_token(VOID); jj_consume_token(MAIN); jj_consume_token(LC); jj_consume_token(RC); jj_consume_token(LB); Statement(); jj_consume_token(RB); } final public void Statement() throws ParseException { IfStatement(); label_1: while (true) { if (jj_2_1(2)) { ; } else { break label_1; } ElseifStatement(); } switch ((jj_ntk==-1)?jj_ntk():jj_ntk) { case ELSE: ElseStatement(); break; default: jj_la1[1] = jj_gen; ; } } /* IfStatement */ final public void IfStatement() throws ParseException { Token node; // int j1; int next; //下一个四元式标号 Sys newsys; jj_consume_token(IF); jj_consume_token(LC); next=count+1; Condition(); jj_consume_token(RC); count++; j1=count; newsys = new Sys(count+"","J","_", "_", j1+"#"); //声明一个新的四元式(1：J,_,_,1#) sysList.add(newsys); jj_consume_token(LB); next=count+1; switch ((jj_ntk==-1)?jj_ntk():jj_ntk) { case IDENTIFIER: Assign(); jj_consume_token(28); break; case IF: Statement(); break; default: jj_la1[2] = jj_gen; jj_consume_token(-1); throw new ParseException(); } jj_consume_token(RB); count++; //count=2 newsys = new Sys(count+"","J","_", "_", next+""); //声明一个新的四元式(2:J,_,_,1#) sysList.add(newsys); EditSys.huitian(sysList, j1+"#", count+1+""); //回填如果四元式列表中有result==1#的则将其result置为2 } /* ElseStatement */ final public void ElseStatement() throws ParseException { Token node; int j1; int next; //下一个四元式标号 Sys newsys; jj_consume_token(ELSE); jj_consume_token(LB); next=count+1; switch ((jj_ntk==-1)?jj_ntk():jj_ntk) { case IDENTIFIER: Assign(); jj_consume_token(28); break; case IF: Statement(); break; default: jj_la1[3] = jj_gen; jj_consume_token(-1); throw new ParseException(); } jj_consume_token(RB); count++; j1=count; //count=2 newsys = new Sys(count+"","J","_", "_", next+""); //声明一个新的四元式(2:J,_,_,1#) sysList.add(newsys); EditSys.huitian(sysList, j1+"#", count+1+""); //回填如果四元式列表中有result==1#的则将其result置为2 } final public void ElseifStatement() throws ParseException { Token node; int j1; int next; //下一个四元式标号 Sys newsys; jj_consume_token(ELSE); jj_consume_token(IF); jj_consume_token(LC); next=count+1; Condition(); jj_consume_token(RC); count++; j1=count; newsys = new Sys(count+"","J","_", "_", j1+"#"); sysList.add(newsys); jj_consume_token(LB); next=count+1; switch ((jj_ntk==-1)?jj_ntk():jj_ntk) { case IDENTIFIER: Assign(); jj_consume_token(28); break; case IF: Statement(); break; default: jj_la1[4] = jj_gen; jj_consume_token(-1); throw new ParseException(); } jj_consume_token(RB); count++; newsys = new Sys(count+"","J","_", "_",j1+"#"+""); sysList.add(newsys); EditSys.huitian(sysList, j1+"#", count+1+""); } /* void IfStatement(): { Token node; int j1; int next; Sys newsys; } { <IF><LC> { next=count+1; } Condition()<RC> { count++; j1=count; newsys = new Sys(count+"","J","_", "_", j1+"#"); sysList.add(newsys); } <LB> { next=count+1; } ((Assign()";")|Statement())<RB> { count++; newsys = new Sys(count+"","J","_", "_", j1+"#"+""); sysList.add(newsys); EditSys.huitian(sysList, j1+"#", count+1+""); } } void ElseifStatement(): { Token node; int j1; int next; Sys newsys; } { <ELSE><IF><LC> { next=count+1; } Condition()<RC> { count++; j1=count; newsys = new Sys(count+"","J","_", "_", j1+"#"); sysList.add(newsys); } <LB> { next=count+1; } ((Assign()";")|Statement())<RB> { count++; newsys = new Sys(count+"","J","_", "_",j1+"#"+""); sysList.add(newsys); EditSys.huitian(sysList, j1+"#", count+1+""); } } void ElseStatement(): { Token node; int j1; int next; Sys newsys; } { <ELSE> <LB> { next=count+1; } ((Assign()";")|Statement())<RB> { count++; j1=count; newsys = new Sys(count+"","J","_", "_", j1+"#"); sysList.add(newsys); EditSys.huitian(sysList, j1+"#", count+1+""); } }*/ final public String Expression() throws ParseException { //定义变量 String first; String middle; String temp=""; Sys newsys; //函数体 first = Term(); temp=first; label_2: while (true) { switch ((jj_ntk==-1)?jj_ntk():jj_ntk) { case PLUS: case MINUS: ; break; default: jj_la1[5] = jj_gen; break label_2; } switch ((jj_ntk==-1)?jj_ntk():jj_ntk) { case PLUS: jj_consume_token(PLUS); middle = Term(); //加法要分步计算 count++; temp="T"+ncount; ncount++; newsys = new Sys(count+"","+",first,middle,temp); sysList.add(newsys); first = temp; //fi