001 /* Copyright 2000, 2001, Compaq Computer Corporation */ 002 003 /* IF THIS IS A JAVA FILE, DO NOT EDIT IT! 004 005 Most Java files in this directory which are part of the Javafe AST 006 are automatically generated using the astgen comment (see 007 ESCTools/Javafe/astgen) from the input file 'hierarchy.h'. If you 008 wish to modify AST classes or introduce new ones, modify 009 'hierarchy.j.' 010 */ 011 012 package javafe.ast; 013 014 import javafe.util.Assert; 015 import javafe.util.Location; 016 import javafe.util.ErrorSet; 017 018 // Convention: unless otherwise noted, integer fields named "loc" refer 019 // to the location of the first character of the syntactic unit 020 021 022 023 /** 024 * Used to indicate the type of an illegal operation, so that error messages 025 * do not unnecessarily propagate; should only be used if the error has 026 * already been reported. 027 */ 028 public class ErrorType extends Type 029 { 030 public int getStartLoc() { return Location.NULL; } 031 032 //@ ensures \result != null; 033 //@ ensures !\result.syntax; 034 public static ErrorType make() { 035 //@ set I_will_establish_invariants_afterwards = true; 036 //@ set result.syntax = false; 037 return new ErrorType(); 038 } 039 040 041 // Generated boilerplate constructors: 042 043 /** 044 * Construct a raw ErrorType whose class invariant(s) have not 045 * yet been established. It is the caller's job to 046 * initialize the returned node's fields so that any 047 * class invariants hold. 048 */ 049 //@ requires I_will_establish_invariants_afterwards; 050 protected ErrorType() {} //@ nowarn Invariant,NonNullInit; 051 052 053 // Generated boilerplate methods: 054 055 public final int childCount() { 056 int sz = 0; 057 if (this.tmodifiers != null) sz += this.tmodifiers.size(); 058 return sz + 0; 059 } 060 061 public final Object childAt(int index) { 062 /*throws IndexOutOfBoundsException*/ 063 if (index < 0) 064 throw new IndexOutOfBoundsException("AST child index " + index); 065 int indexPre = index; 066 067 int sz; 068 069 sz = (this.tmodifiers == null ? 0 : this.tmodifiers.size()); 070 if (0 <= index && index < sz) 071 return this.tmodifiers.elementAt(index); 072 else index -= sz; 073 074 throw new IndexOutOfBoundsException("AST child index " + indexPre); 075 } //@ nowarn Exception; 076 077 public final String toString() { 078 return "[ErrorType" 079 + " tmodifiers = " + this.tmodifiers 080 + "]"; 081 } 082 083 public final int getTag() { 084 return TagConstants.ERRORTYPE; 085 } 086 087 public final void accept(Visitor v) { v.visitErrorType(this); } 088 089 public final Object accept(VisitorArgResult v, Object o) {return v.visitErrorType(this, o); } 090 091 public void check() { 092 super.check(); 093 if (this.tmodifiers != null) 094 for(int i = 0; i < this.tmodifiers.size(); i++) 095 this.tmodifiers.elementAt(i).check(); 096 } 097 098 //@ ensures \result != null; 099 public static ErrorType make(TypeModifierPragmaVec tmodifiers) { 100 //@ set I_will_establish_invariants_afterwards = true; 101 ErrorType result = new ErrorType(); 102 result.tmodifiers = tmodifiers; 103 return result; 104 } 105 }