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 escjava.ast; 013 014 import java.util.Hashtable; 015 import java.util.Set; 016 import java.util.ArrayList; 017 018 import javafe.ast.*; 019 import javafe.util.Assert; 020 import javafe.util.Location; 021 import escjava.ParsedRoutineSpecs; 022 023 // Convention: unless otherwise noted, integer fields named "loc" refer 024 // to the location of the first character of the syntactic unit 025 026 //# TagBase javafe.tc.TagConstants.LAST_TAG + 1 027 //# VisitorRoot javafe.ast.Visitor 028 029 030 public class NaryExpr extends GCExpr 031 { 032 public int op; 033 034 public /*@ non_null @*/ Identifier methodName; 035 036 public /*@ non_null @*/ ExprVec exprs; 037 038 039 public final int getTag() { return op; } 040 041 private void postCheck() { 042 boolean goodtag = 043 ( 044 op == TagConstants.CLASSLITERALFUNC 045 || op == TagConstants.DTTFSA 046 || op == TagConstants.ELEMTYPE 047 || op == TagConstants.FRESH 048 || op == TagConstants.MAX 049 || op == TagConstants.NOWARN_OP 050 || op == TagConstants.TYPEOF 051 || op == TagConstants.WACK_BIGINT_MATH 052 || op == TagConstants.WACK_DURATION 053 || op == TagConstants.WACK_JAVA_MATH 054 || op == TagConstants.WACK_NOWARN 055 || op == TagConstants.WACK_SAFE_MATH 056 || op == TagConstants.WACK_WORKING_SPACE 057 || op == TagConstants.WARN 058 || op == TagConstants.WARN_OP 059 || (TagConstants.FIRSTFUNCTIONTAG <= op 060 && op <= TagConstants.LASTFUNCTIONTAG) 061 ); 062 Assert.notFalse(goodtag); 063 } 064 065 066 067 // Generated boilerplate constructors: 068 069 /** 070 * Construct a raw NaryExpr whose class invariant(s) have not 071 * yet been established. It is the caller's job to 072 * initialize the returned node's fields so that any 073 * class invariants hold. 074 */ 075 //@ requires I_will_establish_invariants_afterwards; 076 protected NaryExpr() {} //@ nowarn Invariant,NonNullInit; 077 078 079 // Generated boilerplate methods: 080 081 public final int childCount() { 082 int sz = 0; 083 if (this.exprs != null) sz += this.exprs.size(); 084 return sz + 1; 085 } 086 087 public final Object childAt(int index) { 088 /*throws IndexOutOfBoundsException*/ 089 if (index < 0) 090 throw new IndexOutOfBoundsException("AST child index " + index); 091 int indexPre = index; 092 093 int sz; 094 095 if (index == 0) return this.methodName; 096 else index--; 097 098 sz = (this.exprs == null ? 0 : this.exprs.size()); 099 if (0 <= index && index < sz) 100 return this.exprs.elementAt(index); 101 else index -= sz; 102 103 throw new IndexOutOfBoundsException("AST child index " + indexPre); 104 } //@ nowarn Exception; 105 106 public final String toString() { 107 return "[NaryExpr" 108 + " sloc = " + this.sloc 109 + " eloc = " + this.eloc 110 + " op = " + this.op 111 + " methodName = " + this.methodName 112 + " exprs = " + this.exprs 113 + "]"; 114 } 115 116 public final void accept(javafe.ast.Visitor v) { 117 if (v instanceof Visitor) ((Visitor)v).visitNaryExpr(this); 118 } 119 120 public final Object accept(javafe.ast.VisitorArgResult v, Object o) { 121 if (v instanceof VisitorArgResult) return ((VisitorArgResult)v).visitNaryExpr(this, o); else return null; 122 } 123 124 public void check() { 125 super.check(); 126 this.methodName.check(); 127 for(int i = 0; i < this.exprs.size(); i++) 128 this.exprs.elementAt(i).check(); 129 postCheck(); 130 } 131 132 //@ ensures \result != null; 133 public static NaryExpr make(int sloc, int eloc, int op, /*@ non_null @*/ Identifier methodName, /*@ non_null @*/ ExprVec exprs) { 134 //@ set I_will_establish_invariants_afterwards = true; 135 NaryExpr result = new NaryExpr(); 136 result.sloc = sloc; 137 result.eloc = eloc; 138 result.op = op; 139 result.methodName = methodName; 140 result.exprs = exprs; 141 return result; 142 } 143 }