John Kessenich | 34fb036 | 2016-05-03 23:17:20 -0600 | [diff] [blame] | 1 | // |
John Kessenich | 927608b | 2017-01-06 12:34:14 -0700 | [diff] [blame] | 2 | // Copyright (C) 2016 Google, Inc. |
John Kessenich | 34fb036 | 2016-05-03 23:17:20 -0600 | [diff] [blame] | 3 | // |
John Kessenich | 927608b | 2017-01-06 12:34:14 -0700 | [diff] [blame] | 4 | // All rights reserved. |
John Kessenich | 34fb036 | 2016-05-03 23:17:20 -0600 | [diff] [blame] | 5 | // |
John Kessenich | 927608b | 2017-01-06 12:34:14 -0700 | [diff] [blame] | 6 | // Redistribution and use in source and binary forms, with or without |
| 7 | // modification, are permitted provided that the following conditions |
| 8 | // are met: |
John Kessenich | 34fb036 | 2016-05-03 23:17:20 -0600 | [diff] [blame] | 9 | // |
| 10 | // Redistributions of source code must retain the above copyright |
| 11 | // notice, this list of conditions and the following disclaimer. |
| 12 | // |
| 13 | // Redistributions in binary form must reproduce the above |
| 14 | // copyright notice, this list of conditions and the following |
| 15 | // disclaimer in the documentation and/or other materials provided |
| 16 | // with the distribution. |
| 17 | // |
| 18 | // Neither the name of Google, Inc., nor the names of its |
| 19 | // contributors may be used to endorse or promote products derived |
| 20 | // from this software without specific prior written permission. |
| 21 | // |
John Kessenich | 927608b | 2017-01-06 12:34:14 -0700 | [diff] [blame] | 22 | // THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS |
| 23 | // "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT |
| 24 | // LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS |
| 25 | // FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE |
| 26 | // COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, |
| 27 | // INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, |
| 28 | // BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; |
| 29 | // LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER |
| 30 | // CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT |
| 31 | // LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN |
| 32 | // ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE |
| 33 | // POSSIBILITY OF SUCH DAMAGE. |
John Kessenich | 34fb036 | 2016-05-03 23:17:20 -0600 | [diff] [blame] | 34 | // |
| 35 | |
| 36 | // Map from physical token form (e.g. '-') to logical operator |
| 37 | // form (e.g., binary subtract or unary negate). |
| 38 | |
| 39 | #include "hlslOpMap.h" |
| 40 | |
| 41 | namespace glslang { |
| 42 | |
| 43 | // Map parsing tokens that could be assignments into assignment operators. |
| 44 | TOperator HlslOpMap::assignment(EHlslTokenClass op) |
| 45 | { |
| 46 | switch (op) { |
| 47 | case EHTokAssign: return EOpAssign; |
| 48 | case EHTokMulAssign: return EOpMulAssign; |
| 49 | case EHTokDivAssign: return EOpDivAssign; |
| 50 | case EHTokAddAssign: return EOpAddAssign; |
| 51 | case EHTokModAssign: return EOpModAssign; |
| 52 | case EHTokLeftAssign: return EOpLeftShiftAssign; |
| 53 | case EHTokRightAssign: return EOpRightShiftAssign; |
| 54 | case EHTokAndAssign: return EOpAndAssign; |
| 55 | case EHTokXorAssign: return EOpExclusiveOrAssign; |
| 56 | case EHTokOrAssign: return EOpInclusiveOrAssign; |
| 57 | case EHTokSubAssign: return EOpSubAssign; |
| 58 | |
| 59 | default: |
| 60 | return EOpNull; |
| 61 | } |
| 62 | } |
| 63 | |
| 64 | // Map parsing tokens that could be binary operations into binary operators. |
| 65 | TOperator HlslOpMap::binary(EHlslTokenClass op) |
| 66 | { |
| 67 | switch (op) { |
| 68 | case EHTokPlus: return EOpAdd; |
| 69 | case EHTokDash: return EOpSub; |
| 70 | case EHTokStar: return EOpMul; |
| 71 | case EHTokSlash: return EOpDiv; |
| 72 | case EHTokPercent: return EOpMod; |
| 73 | case EHTokRightOp: return EOpRightShift; |
| 74 | case EHTokLeftOp: return EOpLeftShift; |
| 75 | case EHTokAmpersand: return EOpAnd; |
| 76 | case EHTokVerticalBar: return EOpInclusiveOr; |
| 77 | case EHTokCaret: return EOpExclusiveOr; |
| 78 | case EHTokEqOp: return EOpEqual; |
| 79 | case EHTokNeOp: return EOpNotEqual; |
| 80 | case EHTokLeftAngle: return EOpLessThan; |
| 81 | case EHTokRightAngle: return EOpGreaterThan; |
| 82 | case EHTokLeOp: return EOpLessThanEqual; |
| 83 | case EHTokGeOp: return EOpGreaterThanEqual; |
| 84 | case EHTokOrOp: return EOpLogicalOr; |
| 85 | case EHTokXorOp: return EOpLogicalXor; |
| 86 | case EHTokAndOp: return EOpLogicalAnd; |
| 87 | |
| 88 | default: |
| 89 | return EOpNull; |
| 90 | } |
| 91 | } |
| 92 | |
| 93 | // Map parsing tokens that could be unary operations into unary operators. |
| 94 | // These are just the ones that can appear in front of its operand. |
| 95 | TOperator HlslOpMap::preUnary(EHlslTokenClass op) |
| 96 | { |
| 97 | switch (op) { |
| 98 | case EHTokPlus: return EOpAdd; // means no-op, but still a unary op was present |
| 99 | case EHTokDash: return EOpNegative; |
| 100 | case EHTokBang: return EOpLogicalNot; |
| 101 | case EHTokTilde: return EOpBitwiseNot; |
John Kessenich | ecba76f | 2017-01-06 00:34:48 -0700 | [diff] [blame] | 102 | |
John Kessenich | 34fb036 | 2016-05-03 23:17:20 -0600 | [diff] [blame] | 103 | case EHTokIncOp: return EOpPreIncrement; |
| 104 | case EHTokDecOp: return EOpPreDecrement; |
| 105 | |
| 106 | default: return EOpNull; // means not a pre-unary op |
| 107 | } |
| 108 | } |
| 109 | |
| 110 | // Map parsing tokens that could be unary operations into unary operators. |
| 111 | // These are just the ones that can appear behind its operand. |
| 112 | TOperator HlslOpMap::postUnary(EHlslTokenClass op) |
| 113 | { |
| 114 | switch (op) { |
| 115 | case EHTokDot: return EOpIndexDirectStruct; |
John Kessenich | 19b92ff | 2016-06-19 11:50:34 -0600 | [diff] [blame] | 116 | case EHTokLeftBracket: return EOpIndexIndirect; |
John Kessenich | ecba76f | 2017-01-06 00:34:48 -0700 | [diff] [blame] | 117 | |
John Kessenich | 34fb036 | 2016-05-03 23:17:20 -0600 | [diff] [blame] | 118 | case EHTokIncOp: return EOpPostIncrement; |
| 119 | case EHTokDecOp: return EOpPostDecrement; |
| 120 | |
John Kessenich | 54ee28f | 2017-03-11 14:13:00 -0700 | [diff] [blame] | 121 | case EHTokColonColon: return EOpScoping; |
| 122 | |
John Kessenich | 34fb036 | 2016-05-03 23:17:20 -0600 | [diff] [blame] | 123 | default: return EOpNull; // means not a post-unary op |
| 124 | } |
| 125 | } |
| 126 | |
| 127 | // Map operators into their level of precedence. |
| 128 | PrecedenceLevel HlslOpMap::precedenceLevel(TOperator op) |
| 129 | { |
| 130 | switch (op) { |
| 131 | case EOpLogicalOr: |
| 132 | return PlLogicalOr; |
| 133 | case EOpLogicalXor: |
| 134 | return PlLogicalXor; |
| 135 | case EOpLogicalAnd: |
| 136 | return PlLogicalAnd; |
| 137 | |
| 138 | case EOpInclusiveOr: |
| 139 | return PlBitwiseOr; |
| 140 | case EOpExclusiveOr: |
| 141 | return PlBitwiseXor; |
| 142 | case EOpAnd: |
| 143 | return PlBitwiseAnd; |
| 144 | |
| 145 | case EOpEqual: |
| 146 | case EOpNotEqual: |
| 147 | return PlEquality; |
| 148 | |
| 149 | case EOpLessThan: |
| 150 | case EOpGreaterThan: |
| 151 | case EOpLessThanEqual: |
| 152 | case EOpGreaterThanEqual: |
| 153 | return PlRelational; |
| 154 | |
| 155 | case EOpRightShift: |
| 156 | case EOpLeftShift: |
| 157 | return PlShift; |
| 158 | |
| 159 | case EOpAdd: |
| 160 | case EOpSub: |
| 161 | return PlAdd; |
| 162 | |
| 163 | case EOpMul: |
| 164 | case EOpDiv: |
| 165 | case EOpMod: |
| 166 | return PlMul; |
| 167 | |
| 168 | default: |
| 169 | return PlBad; |
| 170 | } |
| 171 | } |
| 172 | |
| 173 | } // end namespace glslang |