X-Git-Url: http://demsky.eecs.uci.edu/git/?a=blobdiff_plain;f=Robust%2Fcup%2Fjava_cup%2Fshift_action.java;fp=Robust%2Fcup%2Fjava_cup%2Fshift_action.java;h=0000000000000000000000000000000000000000;hb=refs%2Ftags%2Fbuildscript;hp=33fc17a6bf806eb3533619d6056b9ef1139a8aa3;hpb=b9df1caacff3dbe5959bc12e0e6ba46500fcd3e2;p=IRC.git diff --git a/Robust/cup/java_cup/shift_action.java b/Robust/cup/java_cup/shift_action.java deleted file mode 100644 index 33fc17a6..00000000 --- a/Robust/cup/java_cup/shift_action.java +++ /dev/null @@ -1,82 +0,0 @@ - -package java_cup; - -/** This class represents a shift action within the parse table. - * The action simply stores the state that it shifts to and responds - * to queries about its type. - * - * @version last updated: 11/25/95 - * @author Scott Hudson - */ -public class shift_action extends parse_action { - - /*-----------------------------------------------------------*/ - /*--- Constructor(s) ----------------------------------------*/ - /*-----------------------------------------------------------*/ - - /** Simple constructor. - * @param shft_to the state that this action shifts to. - */ - public shift_action(lalr_state shft_to) throws internal_error - { - /* sanity check */ - if (shft_to == null) - throw new internal_error( - "Attempt to create a shift_action to a null state"); - - _shift_to = shft_to; - } - - /*-----------------------------------------------------------*/ - /*--- (Access to) Instance Variables ------------------------*/ - /*-----------------------------------------------------------*/ - - /** The state we shift to. */ - protected lalr_state _shift_to; - - /** The state we shift to. */ - public lalr_state shift_to() {return _shift_to;} - - /*-----------------------------------------------------------*/ - /*--- General Methods ---------------------------------------*/ - /*-----------------------------------------------------------*/ - - /** Quick access to type of action. */ - public int kind() {return SHIFT;} - - /*. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .*/ - - /** Equality test. */ - public boolean equals(shift_action other) - { - return other != null && other.shift_to() == shift_to(); - } - - /*. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .*/ - - /** Generic equality test. */ - public boolean equals(Object other) - { - if (other instanceof shift_action) - return equals((shift_action)other); - else - return false; - } - - /*. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .*/ - - /** Compute a hash code. */ - public int hashCode() - { - /* use the hash code of the state we are shifting to */ - return shift_to().hashCode(); - } - - /*. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .*/ - - /** Convert to a string. */ - public String toString() {return "SHIFT(to state " + shift_to().index() + ")";} - - /*-----------------------------------------------------------*/ - -}