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 public class ParenExpr extends Expr 023 { 024 public /*@ non_null @*/ Expr expr; 025 026 //@ invariant locOpenParen != javafe.util.Location.NULL; 027 public int locOpenParen; 028 029 //@ invariant locCloseParen != javafe.util.Location.NULL; 030 public int locCloseParen; 031 032 public int getStartLoc() { return locOpenParen; } 033 public int getEndLoc() { return locCloseParen; } 034 035 036 // Generated boilerplate constructors: 037 038 /** 039 * Construct a raw ParenExpr whose class invariant(s) have not 040 * yet been established. It is the caller's job to 041 * initialize the returned node's fields so that any 042 * class invariants hold. 043 */ 044 //@ requires I_will_establish_invariants_afterwards; 045 protected ParenExpr() {} //@ nowarn Invariant,NonNullInit; 046 047 048 // Generated boilerplate methods: 049 050 public final int childCount() { 051 return 1; 052 } 053 054 public final Object childAt(int index) { 055 /*throws IndexOutOfBoundsException*/ 056 if (index < 0) 057 throw new IndexOutOfBoundsException("AST child index " + index); 058 int indexPre = index; 059 060 int sz; 061 062 if (index == 0) return this.expr; 063 else index--; 064 065 throw new IndexOutOfBoundsException("AST child index " + indexPre); 066 } //@ nowarn Exception; 067 068 public final String toString() { 069 return "[ParenExpr" 070 + " expr = " + this.expr 071 + " locOpenParen = " + this.locOpenParen 072 + " locCloseParen = " + this.locCloseParen 073 + "]"; 074 } 075 076 public final int getTag() { 077 return TagConstants.PARENEXPR; 078 } 079 080 public final void accept(Visitor v) { v.visitParenExpr(this); } 081 082 public final Object accept(VisitorArgResult v, Object o) {return v.visitParenExpr(this, o); } 083 084 public void check() { 085 super.check(); 086 this.expr.check(); 087 } 088 089 //@ requires locOpenParen != javafe.util.Location.NULL; 090 //@ requires locCloseParen != javafe.util.Location.NULL; 091 //@ ensures \result != null; 092 public static ParenExpr make(/*@ non_null @*/ Expr expr, int locOpenParen, int locCloseParen) { 093 //@ set I_will_establish_invariants_afterwards = true; 094 ParenExpr result = new ParenExpr(); 095 result.expr = expr; 096 result.locOpenParen = locOpenParen; 097 result.locCloseParen = locCloseParen; 098 return result; 099 } 100 }