aslcstyle.y revision 1.1.1.4.2.2 1 1.1.1.4.2.2 jdolecek NoEcho('
2 1.1.1.4.2.2 jdolecek /******************************************************************************
3 1.1.1.4.2.2 jdolecek *
4 1.1.1.4.2.2 jdolecek * Module Name: aslcstyle.y - Production rules for symbolic operators
5 1.1.1.4.2.2 jdolecek *
6 1.1.1.4.2.2 jdolecek *****************************************************************************/
7 1.1.1.4.2.2 jdolecek
8 1.1.1.4.2.2 jdolecek /*
9 1.1.1.4.2.2 jdolecek * Copyright (C) 2000 - 2017, Intel Corp.
10 1.1.1.4.2.2 jdolecek * All rights reserved.
11 1.1.1.4.2.2 jdolecek *
12 1.1.1.4.2.2 jdolecek * Redistribution and use in source and binary forms, with or without
13 1.1.1.4.2.2 jdolecek * modification, are permitted provided that the following conditions
14 1.1.1.4.2.2 jdolecek * are met:
15 1.1.1.4.2.2 jdolecek * 1. Redistributions of source code must retain the above copyright
16 1.1.1.4.2.2 jdolecek * notice, this list of conditions, and the following disclaimer,
17 1.1.1.4.2.2 jdolecek * without modification.
18 1.1.1.4.2.2 jdolecek * 2. Redistributions in binary form must reproduce at minimum a disclaimer
19 1.1.1.4.2.2 jdolecek * substantially similar to the "NO WARRANTY" disclaimer below
20 1.1.1.4.2.2 jdolecek * ("Disclaimer") and any redistribution must be conditioned upon
21 1.1.1.4.2.2 jdolecek * including a substantially similar Disclaimer requirement for further
22 1.1.1.4.2.2 jdolecek * binary redistribution.
23 1.1.1.4.2.2 jdolecek * 3. Neither the names of the above-listed copyright holders nor the names
24 1.1.1.4.2.2 jdolecek * of any contributors may be used to endorse or promote products derived
25 1.1.1.4.2.2 jdolecek * from this software without specific prior written permission.
26 1.1.1.4.2.2 jdolecek *
27 1.1.1.4.2.2 jdolecek * Alternatively, this software may be distributed under the terms of the
28 1.1.1.4.2.2 jdolecek * GNU General Public License ("GPL") version 2 as published by the Free
29 1.1.1.4.2.2 jdolecek * Software Foundation.
30 1.1.1.4.2.2 jdolecek *
31 1.1.1.4.2.2 jdolecek * NO WARRANTY
32 1.1.1.4.2.2 jdolecek * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
33 1.1.1.4.2.2 jdolecek * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
34 1.1.1.4.2.2 jdolecek * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR
35 1.1.1.4.2.2 jdolecek * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
36 1.1.1.4.2.2 jdolecek * HOLDERS OR CONTRIBUTORS BE LIABLE FOR SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
37 1.1.1.4.2.2 jdolecek * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
38 1.1.1.4.2.2 jdolecek * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
39 1.1.1.4.2.2 jdolecek * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
40 1.1.1.4.2.2 jdolecek * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
41 1.1.1.4.2.2 jdolecek * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
42 1.1.1.4.2.2 jdolecek * POSSIBILITY OF SUCH DAMAGES.
43 1.1.1.4.2.2 jdolecek */
44 1.1.1.4.2.2 jdolecek
45 1.1.1.4.2.2 jdolecek ')
46 1.1.1.4.2.2 jdolecek
47 1.1.1.4.2.2 jdolecek /*******************************************************************************
48 1.1.1.4.2.2 jdolecek *
49 1.1.1.4.2.2 jdolecek * Production rules for the symbolic (c-style) operators
50 1.1.1.4.2.2 jdolecek *
51 1.1.1.4.2.2 jdolecek ******************************************************************************/
52 1.1.1.4.2.2 jdolecek
53 1.1.1.4.2.2 jdolecek /*
54 1.1.1.4.2.2 jdolecek * ASL Extensions: C-style math/logical operators and expressions.
55 1.1.1.4.2.2 jdolecek * The implementation transforms these operators into the standard
56 1.1.1.4.2.2 jdolecek * AML opcodes and syntax.
57 1.1.1.4.2.2 jdolecek *
58 1.1.1.4.2.2 jdolecek * Supported operators and precedence rules (high-to-low)
59 1.1.1.4.2.2 jdolecek *
60 1.1.1.4.2.2 jdolecek * NOTE: The operator precedence and associativity rules are
61 1.1.1.4.2.2 jdolecek * implemented by the tokens in asltokens.y
62 1.1.1.4.2.2 jdolecek *
63 1.1.1.4.2.2 jdolecek * (left-to-right):
64 1.1.1.4.2.2 jdolecek * 1) ( ) expr++ expr--
65 1.1.1.4.2.2 jdolecek *
66 1.1.1.4.2.2 jdolecek * (right-to-left):
67 1.1.1.4.2.2 jdolecek * 2) ! ~
68 1.1.1.4.2.2 jdolecek *
69 1.1.1.4.2.2 jdolecek * (left-to-right):
70 1.1.1.4.2.2 jdolecek * 3) * / %
71 1.1.1.4.2.2 jdolecek * 4) + -
72 1.1.1.4.2.2 jdolecek * 5) >> <<
73 1.1.1.4.2.2 jdolecek * 6) < > <= >=
74 1.1.1.4.2.2 jdolecek * 7) == !=
75 1.1.1.4.2.2 jdolecek * 8) &
76 1.1.1.4.2.2 jdolecek * 9) ^
77 1.1.1.4.2.2 jdolecek * 10) |
78 1.1.1.4.2.2 jdolecek * 11) &&
79 1.1.1.4.2.2 jdolecek * 12) ||
80 1.1.1.4.2.2 jdolecek *
81 1.1.1.4.2.2 jdolecek * (right-to-left):
82 1.1.1.4.2.2 jdolecek * 13) = += -= *= /= %= <<= >>= &= ^= |=
83 1.1.1.4.2.2 jdolecek */
84 1.1.1.4.2.2 jdolecek
85 1.1.1.4.2.2 jdolecek
86 1.1.1.4.2.2 jdolecek /*******************************************************************************
87 1.1.1.4.2.2 jdolecek *
88 1.1.1.4.2.2 jdolecek * Basic operations for math and logical expressions.
89 1.1.1.4.2.2 jdolecek *
90 1.1.1.4.2.2 jdolecek ******************************************************************************/
91 1.1.1.4.2.2 jdolecek
92 1.1.1.4.2.2 jdolecek Expression
93 1.1.1.4.2.2 jdolecek
94 1.1.1.4.2.2 jdolecek /* Unary operators */
95 1.1.1.4.2.2 jdolecek
96 1.1.1.4.2.2 jdolecek : PARSEOP_EXP_LOGICAL_NOT {$<n>$ = TrCreateLeafOp (PARSEOP_LNOT);}
97 1.1.1.4.2.2 jdolecek TermArg {$$ = TrLinkOpChildren ($<n>2,1,$3);}
98 1.1.1.4.2.2 jdolecek | PARSEOP_EXP_NOT {$<n>$ = TrCreateLeafOp (PARSEOP_NOT);}
99 1.1.1.4.2.2 jdolecek TermArg {$$ = TrLinkOpChildren ($<n>2,2,$3,TrCreateNullTargetOp ());}
100 1.1.1.4.2.2 jdolecek
101 1.1.1.4.2.2 jdolecek | SuperName PARSEOP_EXP_INCREMENT {$<n>$ = TrCreateLeafOp (PARSEOP_INCREMENT);}
102 1.1.1.4.2.2 jdolecek {$$ = TrLinkOpChildren ($<n>3,1,$1);}
103 1.1.1.4.2.2 jdolecek | SuperName PARSEOP_EXP_DECREMENT {$<n>$ = TrCreateLeafOp (PARSEOP_DECREMENT);}
104 1.1.1.4.2.2 jdolecek {$$ = TrLinkOpChildren ($<n>3,1,$1);}
105 1.1.1.4.2.2 jdolecek
106 1.1.1.4.2.2 jdolecek /* Binary operators: math and logical */
107 1.1.1.4.2.2 jdolecek
108 1.1.1.4.2.2 jdolecek | TermArg PARSEOP_EXP_ADD {$<n>$ = TrCreateLeafOp (PARSEOP_ADD);}
109 1.1.1.4.2.2 jdolecek TermArg {$$ = TrLinkOpChildren ($<n>3,3,$1,$4,TrCreateNullTargetOp ());}
110 1.1.1.4.2.2 jdolecek | TermArg PARSEOP_EXP_DIVIDE {$<n>$ = TrCreateLeafOp (PARSEOP_DIVIDE);}
111 1.1.1.4.2.2 jdolecek TermArg {$$ = TrLinkOpChildren ($<n>3,4,$1,$4,TrCreateNullTargetOp (),
112 1.1.1.4.2.2 jdolecek TrCreateNullTargetOp ());}
113 1.1.1.4.2.2 jdolecek | TermArg PARSEOP_EXP_MODULO {$<n>$ = TrCreateLeafOp (PARSEOP_MOD);}
114 1.1.1.4.2.2 jdolecek TermArg {$$ = TrLinkOpChildren ($<n>3,3,$1,$4,TrCreateNullTargetOp ());}
115 1.1.1.4.2.2 jdolecek | TermArg PARSEOP_EXP_MULTIPLY {$<n>$ = TrCreateLeafOp (PARSEOP_MULTIPLY);}
116 1.1.1.4.2.2 jdolecek TermArg {$$ = TrLinkOpChildren ($<n>3,3,$1,$4,TrCreateNullTargetOp ());}
117 1.1.1.4.2.2 jdolecek | TermArg PARSEOP_EXP_SHIFT_LEFT {$<n>$ = TrCreateLeafOp (PARSEOP_SHIFTLEFT);}
118 1.1.1.4.2.2 jdolecek TermArg {$$ = TrLinkOpChildren ($<n>3,3,$1,$4,TrCreateNullTargetOp ());}
119 1.1.1.4.2.2 jdolecek | TermArg PARSEOP_EXP_SHIFT_RIGHT {$<n>$ = TrCreateLeafOp (PARSEOP_SHIFTRIGHT);}
120 1.1.1.4.2.2 jdolecek TermArg {$$ = TrLinkOpChildren ($<n>3,3,$1,$4,TrCreateNullTargetOp ());}
121 1.1.1.4.2.2 jdolecek | TermArg PARSEOP_EXP_SUBTRACT {$<n>$ = TrCreateLeafOp (PARSEOP_SUBTRACT);}
122 1.1.1.4.2.2 jdolecek TermArg {$$ = TrLinkOpChildren ($<n>3,3,$1,$4,TrCreateNullTargetOp ());}
123 1.1.1.4.2.2 jdolecek
124 1.1.1.4.2.2 jdolecek | TermArg PARSEOP_EXP_AND {$<n>$ = TrCreateLeafOp (PARSEOP_AND);}
125 1.1.1.4.2.2 jdolecek TermArg {$$ = TrLinkOpChildren ($<n>3,3,$1,$4,TrCreateNullTargetOp ());}
126 1.1.1.4.2.2 jdolecek | TermArg PARSEOP_EXP_OR {$<n>$ = TrCreateLeafOp (PARSEOP_OR);}
127 1.1.1.4.2.2 jdolecek TermArg {$$ = TrLinkOpChildren ($<n>3,3,$1,$4,TrCreateNullTargetOp ());}
128 1.1.1.4.2.2 jdolecek | TermArg PARSEOP_EXP_XOR {$<n>$ = TrCreateLeafOp (PARSEOP_XOR);}
129 1.1.1.4.2.2 jdolecek TermArg {$$ = TrLinkOpChildren ($<n>3,3,$1,$4,TrCreateNullTargetOp ());}
130 1.1.1.4.2.2 jdolecek
131 1.1.1.4.2.2 jdolecek | TermArg PARSEOP_EXP_GREATER {$<n>$ = TrCreateLeafOp (PARSEOP_LGREATER);}
132 1.1.1.4.2.2 jdolecek TermArg {$$ = TrLinkOpChildren ($<n>3,2,$1,$4);}
133 1.1.1.4.2.2 jdolecek | TermArg PARSEOP_EXP_GREATER_EQUAL {$<n>$ = TrCreateLeafOp (PARSEOP_LGREATEREQUAL);}
134 1.1.1.4.2.2 jdolecek TermArg {$$ = TrLinkOpChildren ($<n>3,2,$1,$4);}
135 1.1.1.4.2.2 jdolecek | TermArg PARSEOP_EXP_LESS {$<n>$ = TrCreateLeafOp (PARSEOP_LLESS);}
136 1.1.1.4.2.2 jdolecek TermArg {$$ = TrLinkOpChildren ($<n>3,2,$1,$4);}
137 1.1.1.4.2.2 jdolecek | TermArg PARSEOP_EXP_LESS_EQUAL {$<n>$ = TrCreateLeafOp (PARSEOP_LLESSEQUAL);}
138 1.1.1.4.2.2 jdolecek TermArg {$$ = TrLinkOpChildren ($<n>3,2,$1,$4);}
139 1.1.1.4.2.2 jdolecek
140 1.1.1.4.2.2 jdolecek | TermArg PARSEOP_EXP_EQUAL {$<n>$ = TrCreateLeafOp (PARSEOP_LEQUAL);}
141 1.1.1.4.2.2 jdolecek TermArg {$$ = TrLinkOpChildren ($<n>3,2,$1,$4);}
142 1.1.1.4.2.2 jdolecek | TermArg PARSEOP_EXP_NOT_EQUAL {$<n>$ = TrCreateLeafOp (PARSEOP_LNOTEQUAL);}
143 1.1.1.4.2.2 jdolecek TermArg {$$ = TrLinkOpChildren ($<n>3,2,$1,$4);}
144 1.1.1.4.2.2 jdolecek
145 1.1.1.4.2.2 jdolecek | TermArg PARSEOP_EXP_LOGICAL_AND {$<n>$ = TrCreateLeafOp (PARSEOP_LAND);}
146 1.1.1.4.2.2 jdolecek TermArg {$$ = TrLinkOpChildren ($<n>3,2,$1,$4);}
147 1.1.1.4.2.2 jdolecek | TermArg PARSEOP_EXP_LOGICAL_OR {$<n>$ = TrCreateLeafOp (PARSEOP_LOR);}
148 1.1.1.4.2.2 jdolecek TermArg {$$ = TrLinkOpChildren ($<n>3,2,$1,$4);}
149 1.1.1.4.2.2 jdolecek
150 1.1.1.4.2.2 jdolecek /* Parentheses */
151 1.1.1.4.2.2 jdolecek
152 1.1.1.4.2.2 jdolecek | PARSEOP_OPEN_PAREN
153 1.1.1.4.2.2 jdolecek Expression
154 1.1.1.4.2.2 jdolecek PARSEOP_CLOSE_PAREN {$$ = $2;}
155 1.1.1.4.2.2 jdolecek
156 1.1.1.4.2.2 jdolecek /* Index term -- "= BUF1[5]" on right-hand side of an equals (source) */
157 1.1.1.4.2.2 jdolecek
158 1.1.1.4.2.2 jdolecek | IndexExpTerm
159 1.1.1.4.2.2 jdolecek ;
160 1.1.1.4.2.2 jdolecek
161 1.1.1.4.2.2 jdolecek /*
162 1.1.1.4.2.2 jdolecek * Index term -- "BUF1[5] = " or " = BUF1[5] on either the left side
163 1.1.1.4.2.2 jdolecek * of an equals (target) or the right side (source)
164 1.1.1.4.2.2 jdolecek * Currently used in these terms:
165 1.1.1.4.2.2 jdolecek * Expression
166 1.1.1.4.2.2 jdolecek * ObjectTypeSource
167 1.1.1.4.2.2 jdolecek * DerefOfSource
168 1.1.1.4.2.2 jdolecek * Type6Opcode
169 1.1.1.4.2.2 jdolecek */
170 1.1.1.4.2.2 jdolecek IndexExpTerm
171 1.1.1.4.2.2 jdolecek
172 1.1.1.4.2.2 jdolecek : SuperName
173 1.1.1.4.2.2 jdolecek PARSEOP_EXP_INDEX_LEFT
174 1.1.1.4.2.2 jdolecek TermArg
175 1.1.1.4.2.2 jdolecek PARSEOP_EXP_INDEX_RIGHT {$$ = TrCreateLeafOp (PARSEOP_INDEX);
176 1.1.1.4.2.2 jdolecek TrLinkOpChildren ($$,3,$1,$3,TrCreateNullTargetOp ());}
177 1.1.1.4.2.2 jdolecek ;
178 1.1.1.4.2.2 jdolecek
179 1.1.1.4.2.2 jdolecek
180 1.1.1.4.2.2 jdolecek /*******************************************************************************
181 1.1.1.4.2.2 jdolecek *
182 1.1.1.4.2.2 jdolecek * All assignment-type operations -- math and logical. Includes simple
183 1.1.1.4.2.2 jdolecek * assignment and compound assignments.
184 1.1.1.4.2.2 jdolecek *
185 1.1.1.4.2.2 jdolecek ******************************************************************************/
186 1.1.1.4.2.2 jdolecek
187 1.1.1.4.2.2 jdolecek EqualsTerm
188 1.1.1.4.2.2 jdolecek
189 1.1.1.4.2.2 jdolecek /* Allow parens anywhere */
190 1.1.1.4.2.2 jdolecek
191 1.1.1.4.2.2 jdolecek : PARSEOP_OPEN_PAREN
192 1.1.1.4.2.2 jdolecek EqualsTerm
193 1.1.1.4.2.2 jdolecek PARSEOP_CLOSE_PAREN {$$ = $2;}
194 1.1.1.4.2.2 jdolecek
195 1.1.1.4.2.2 jdolecek /* Simple Store() operation */
196 1.1.1.4.2.2 jdolecek
197 1.1.1.4.2.2 jdolecek | SuperName
198 1.1.1.4.2.2 jdolecek PARSEOP_EXP_EQUALS
199 1.1.1.4.2.2 jdolecek TermArg {$$ = TrCreateAssignmentOp ($1, $3);}
200 1.1.1.4.2.2 jdolecek
201 1.1.1.4.2.2 jdolecek /* Chained equals: (a=RefOf)=b, a=b=c=d etc. */
202 1.1.1.4.2.2 jdolecek
203 1.1.1.4.2.2 jdolecek | PARSEOP_OPEN_PAREN
204 1.1.1.4.2.2 jdolecek EqualsTerm
205 1.1.1.4.2.2 jdolecek PARSEOP_CLOSE_PAREN
206 1.1.1.4.2.2 jdolecek PARSEOP_EXP_EQUALS
207 1.1.1.4.2.2 jdolecek TermArg {$$ = TrCreateAssignmentOp ($2, $5);}
208 1.1.1.4.2.2 jdolecek
209 1.1.1.4.2.2 jdolecek /* Compound assignments -- Add (operand, operand, target) */
210 1.1.1.4.2.2 jdolecek
211 1.1.1.4.2.2 jdolecek | TermArg PARSEOP_EXP_ADD_EQ {$<n>$ = TrCreateLeafOp (PARSEOP_ADD);}
212 1.1.1.4.2.2 jdolecek TermArg {$$ = TrLinkOpChildren ($<n>3,3,$1,$4,
213 1.1.1.4.2.2 jdolecek TrSetOpFlags (TrCreateTargetOp ($1, NULL), OP_IS_TARGET));}
214 1.1.1.4.2.2 jdolecek
215 1.1.1.4.2.2 jdolecek | TermArg PARSEOP_EXP_DIV_EQ {$<n>$ = TrCreateLeafOp (PARSEOP_DIVIDE);}
216 1.1.1.4.2.2 jdolecek TermArg {$$ = TrLinkOpChildren ($<n>3,4,$1,$4,TrCreateNullTargetOp (),
217 1.1.1.4.2.2 jdolecek TrSetOpFlags (TrCreateTargetOp ($1, NULL), OP_IS_TARGET));}
218 1.1.1.4.2.2 jdolecek
219 1.1.1.4.2.2 jdolecek | TermArg PARSEOP_EXP_MOD_EQ {$<n>$ = TrCreateLeafOp (PARSEOP_MOD);}
220 1.1.1.4.2.2 jdolecek TermArg {$$ = TrLinkOpChildren ($<n>3,3,$1,$4,
221 1.1.1.4.2.2 jdolecek TrSetOpFlags (TrCreateTargetOp ($1, NULL), OP_IS_TARGET));}
222 1.1.1.4.2.2 jdolecek
223 1.1.1.4.2.2 jdolecek | TermArg PARSEOP_EXP_MUL_EQ {$<n>$ = TrCreateLeafOp (PARSEOP_MULTIPLY);}
224 1.1.1.4.2.2 jdolecek TermArg {$$ = TrLinkOpChildren ($<n>3,3,$1,$4,
225 1.1.1.4.2.2 jdolecek TrSetOpFlags (TrCreateTargetOp ($1, NULL), OP_IS_TARGET));}
226 1.1.1.4.2.2 jdolecek
227 1.1.1.4.2.2 jdolecek | TermArg PARSEOP_EXP_SHL_EQ {$<n>$ = TrCreateLeafOp (PARSEOP_SHIFTLEFT);}
228 1.1.1.4.2.2 jdolecek TermArg {$$ = TrLinkOpChildren ($<n>3,3,$1,$4,
229 1.1.1.4.2.2 jdolecek TrSetOpFlags (TrCreateTargetOp ($1, NULL), OP_IS_TARGET));}
230 1.1.1.4.2.2 jdolecek
231 1.1.1.4.2.2 jdolecek | TermArg PARSEOP_EXP_SHR_EQ {$<n>$ = TrCreateLeafOp (PARSEOP_SHIFTRIGHT);}
232 1.1.1.4.2.2 jdolecek TermArg {$$ = TrLinkOpChildren ($<n>3,3,$1,$4,
233 1.1.1.4.2.2 jdolecek TrSetOpFlags (TrCreateTargetOp ($1, NULL), OP_IS_TARGET));}
234 1.1.1.4.2.2 jdolecek
235 1.1.1.4.2.2 jdolecek | TermArg PARSEOP_EXP_SUB_EQ {$<n>$ = TrCreateLeafOp (PARSEOP_SUBTRACT);}
236 1.1.1.4.2.2 jdolecek TermArg {$$ = TrLinkOpChildren ($<n>3,3,$1,$4,
237 1.1.1.4.2.2 jdolecek TrSetOpFlags (TrCreateTargetOp ($1, NULL), OP_IS_TARGET));}
238 1.1.1.4.2.2 jdolecek
239 1.1.1.4.2.2 jdolecek | TermArg PARSEOP_EXP_AND_EQ {$<n>$ = TrCreateLeafOp (PARSEOP_AND);}
240 1.1.1.4.2.2 jdolecek TermArg {$$ = TrLinkOpChildren ($<n>3,3,$1,$4,
241 1.1.1.4.2.2 jdolecek TrSetOpFlags (TrCreateTargetOp ($1, NULL), OP_IS_TARGET));}
242 1.1.1.4.2.2 jdolecek
243 1.1.1.4.2.2 jdolecek | TermArg PARSEOP_EXP_OR_EQ {$<n>$ = TrCreateLeafOp (PARSEOP_OR);}
244 1.1.1.4.2.2 jdolecek TermArg {$$ = TrLinkOpChildren ($<n>3,3,$1,$4,
245 1.1.1.4.2.2 jdolecek TrSetOpFlags (TrCreateTargetOp ($1, NULL), OP_IS_TARGET));}
246 1.1.1.4.2.2 jdolecek
247 1.1.1.4.2.2 jdolecek | TermArg PARSEOP_EXP_XOR_EQ {$<n>$ = TrCreateLeafOp (PARSEOP_XOR);}
248 1.1.1.4.2.2 jdolecek TermArg {$$ = TrLinkOpChildren ($<n>3,3,$1,$4,
249 1.1.1.4.2.2 jdolecek TrSetOpFlags (TrCreateTargetOp ($1, NULL), OP_IS_TARGET));}
250 1.1.1.4.2.2 jdolecek ;
251