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- //
- // Copyright (C) 2016 Google, Inc.
- //
- // All rights reserved.
- //
- // Redistribution and use in source and binary forms, with or without
- // modification, are permitted provided that the following conditions
- // are met:
- //
- // Redistributions of source code must retain the above copyright
- // notice, this list of conditions and the following disclaimer.
- //
- // Redistributions in binary form must reproduce the above
- // copyright notice, this list of conditions and the following
- // disclaimer in the documentation and/or other materials provided
- // with the distribution.
- //
- // Neither the name of Google, Inc., nor the names of its
- // contributors may be used to endorse or promote products derived
- // from this software without specific prior written permission.
- //
- // THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
- // "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
- // LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
- // FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
- // COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
- // INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
- // BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
- // LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
- // CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
- // LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
- // ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
- // POSSIBILITY OF SUCH DAMAGE.
- //
- // Map from physical token form (e.g. '-') to logical operator
- // form (e.g., binary subtract or unary negate).
- #include "hlslOpMap.h"
- namespace glslang {
- // Map parsing tokens that could be assignments into assignment operators.
- TOperator HlslOpMap::assignment(EHlslTokenClass op)
- {
- switch (op) {
- case EHTokAssign: return EOpAssign;
- case EHTokMulAssign: return EOpMulAssign;
- case EHTokDivAssign: return EOpDivAssign;
- case EHTokAddAssign: return EOpAddAssign;
- case EHTokModAssign: return EOpModAssign;
- case EHTokLeftAssign: return EOpLeftShiftAssign;
- case EHTokRightAssign: return EOpRightShiftAssign;
- case EHTokAndAssign: return EOpAndAssign;
- case EHTokXorAssign: return EOpExclusiveOrAssign;
- case EHTokOrAssign: return EOpInclusiveOrAssign;
- case EHTokSubAssign: return EOpSubAssign;
- default:
- return EOpNull;
- }
- }
- // Map parsing tokens that could be binary operations into binary operators.
- TOperator HlslOpMap::binary(EHlslTokenClass op)
- {
- switch (op) {
- case EHTokPlus: return EOpAdd;
- case EHTokDash: return EOpSub;
- case EHTokStar: return EOpMul;
- case EHTokSlash: return EOpDiv;
- case EHTokPercent: return EOpMod;
- case EHTokRightOp: return EOpRightShift;
- case EHTokLeftOp: return EOpLeftShift;
- case EHTokAmpersand: return EOpAnd;
- case EHTokVerticalBar: return EOpInclusiveOr;
- case EHTokCaret: return EOpExclusiveOr;
- case EHTokEqOp: return EOpEqual;
- case EHTokNeOp: return EOpNotEqual;
- case EHTokLeftAngle: return EOpLessThan;
- case EHTokRightAngle: return EOpGreaterThan;
- case EHTokLeOp: return EOpLessThanEqual;
- case EHTokGeOp: return EOpGreaterThanEqual;
- case EHTokOrOp: return EOpLogicalOr;
- case EHTokXorOp: return EOpLogicalXor;
- case EHTokAndOp: return EOpLogicalAnd;
- default:
- return EOpNull;
- }
- }
- // Map parsing tokens that could be unary operations into unary operators.
- // These are just the ones that can appear in front of its operand.
- TOperator HlslOpMap::preUnary(EHlslTokenClass op)
- {
- switch (op) {
- case EHTokPlus: return EOpAdd; // means no-op, but still a unary op was present
- case EHTokDash: return EOpNegative;
- case EHTokBang: return EOpLogicalNot;
- case EHTokTilde: return EOpBitwiseNot;
- case EHTokIncOp: return EOpPreIncrement;
- case EHTokDecOp: return EOpPreDecrement;
- default: return EOpNull; // means not a pre-unary op
- }
- }
- // Map parsing tokens that could be unary operations into unary operators.
- // These are just the ones that can appear behind its operand.
- TOperator HlslOpMap::postUnary(EHlslTokenClass op)
- {
- switch (op) {
- case EHTokDot: return EOpIndexDirectStruct;
- case EHTokLeftBracket: return EOpIndexIndirect;
- case EHTokIncOp: return EOpPostIncrement;
- case EHTokDecOp: return EOpPostDecrement;
- case EHTokColonColon: return EOpScoping;
- default: return EOpNull; // means not a post-unary op
- }
- }
- // Map operators into their level of precedence.
- PrecedenceLevel HlslOpMap::precedenceLevel(TOperator op)
- {
- switch (op) {
- case EOpLogicalOr:
- return PlLogicalOr;
- case EOpLogicalXor:
- return PlLogicalXor;
- case EOpLogicalAnd:
- return PlLogicalAnd;
- case EOpInclusiveOr:
- return PlBitwiseOr;
- case EOpExclusiveOr:
- return PlBitwiseXor;
- case EOpAnd:
- return PlBitwiseAnd;
- case EOpEqual:
- case EOpNotEqual:
- return PlEquality;
- case EOpLessThan:
- case EOpGreaterThan:
- case EOpLessThanEqual:
- case EOpGreaterThanEqual:
- return PlRelational;
- case EOpRightShift:
- case EOpLeftShift:
- return PlShift;
- case EOpAdd:
- case EOpSub:
- return PlAdd;
- case EOpMul:
- case EOpDiv:
- case EOpMod:
- return PlMul;
- default:
- return PlBad;
- }
- }
- } // end namespace glslang
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