1 | /* |
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2 | * Converts carry generating builtins expressions to compiled form. |
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3 | * Applied before carry variable insertion. |
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4 | * |
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5 | * @author Ken Herdy <ksherdy at sfu dot ca> |
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6 | * |
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7 | * Case 1: 'assignment' statement |
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8 | * |
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9 | * returnValue = pablo.BUILTIN_CALL(args) |
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10 | * |
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11 | * => |
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12 | * |
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13 | * stream temp; |
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14 | * temp = pablo_blk_BUILTIN_CALL(args); |
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15 | * |
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16 | * Case 2: 'if' condition |
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17 | * |
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18 | * if(pablo.BUILTIN_CALL(args) { ... } |
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19 | * |
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20 | * } |
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21 | * |
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22 | * => |
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23 | * |
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24 | * stream temp; |
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25 | * temp = pablo_blk_BUILTIN_CALL(args); |
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26 | * if(temp) { ... } |
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27 | * |
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28 | * Case 3: 'while' condition |
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29 | * |
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30 | * while(pablo.BUILTIN_CALL(args) { ... } |
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31 | * |
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32 | * => |
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33 | * |
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34 | * stream temp: |
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35 | * temp = pablo_blk_BUILTIN_CALL(args); |
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36 | * while(temp) { |
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37 | * ... |
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38 | * |
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39 | * stream temp: |
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40 | * temp = pablo_blk_BUILTIN_CALL(args); |
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41 | * } |
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42 | * |
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43 | */ |
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44 | package toolchain.s2k.transformer.visitors.S2K2S2K; |
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45 | |
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46 | import java.util.LinkedHashMap; |
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47 | import java.util.List; |
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48 | import java.util.Map; |
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49 | |
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50 | import s2k.ast.*; |
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51 | import s2k.inputHandler.Locator; |
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52 | import toolchain.s2k.ast.Accessors; |
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53 | import toolchain.s2k.ast.Generators; |
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54 | import toolchain.s2k.lang.builtin.S2KBuiltinsUtil; |
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55 | import toolchain.util.Labeller; |
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56 | import toolchain.util.Pair; |
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57 | import static toolchain.util.MapUtil.*; |
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58 | |
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59 | public class TempifyCarrySetBuiltinCalls { |
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60 | |
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61 | static public ASTNode apply(ASTNode ASTree) { |
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62 | |
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63 | ASTNode xTree = SplitVarDeclInits.apply(ASTree); |
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64 | |
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65 | Tempifier tempifier = new Tempifier(); |
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66 | xTree.accept(tempifier); |
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67 | return ASTree; |
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68 | } |
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69 | |
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70 | static private class Tempifier extends VoidVisitor.Default { |
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71 | |
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72 | Labeller labeller; |
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73 | Map<ASTNode, List<ASTNode>> enclBlockStmtTempDecls; |
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74 | Map<ASTNode, List<Pair<ASTNode, List<ASTNode>>>> tempDeclsInsertionChild; |
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75 | |
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76 | Map<ASTNode, List<ASTNode>> enclBlockStmtTempAssigns; |
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77 | Map<ASTNode, List<Pair<ASTNode, List<ASTNode>>>> tempAssignsInsertionChild; |
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78 | |
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79 | public Tempifier() { |
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80 | this(0); |
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81 | } |
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82 | |
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83 | public Tempifier(int nextValue) { |
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84 | labeller = new Labeller("_temp"); |
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85 | labeller.setNextValue(nextValue); |
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86 | |
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87 | enclBlockStmtTempDecls = new LinkedHashMap<ASTNode, List<ASTNode>>(); |
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88 | enclBlockStmtTempAssigns = new LinkedHashMap<ASTNode, List<ASTNode>>(); |
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89 | |
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90 | tempDeclsInsertionChild = new LinkedHashMap<ASTNode, List<Pair<ASTNode, List<ASTNode>>>>(); |
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91 | tempAssignsInsertionChild = new LinkedHashMap<ASTNode, List<Pair<ASTNode, List<ASTNode>>>>(); |
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92 | } |
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93 | |
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94 | ////////////////////////////////////////////////////////////// |
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95 | // visitor callbacks |
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96 | |
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97 | public void visitEnter(FilterDefNode node) { |
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98 | labeller.reset(); |
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99 | |
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100 | enclBlockStmtTempDecls.clear(); |
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101 | enclBlockStmtTempAssigns.clear(); |
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102 | |
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103 | tempDeclsInsertionChild.clear(); |
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104 | tempAssignsInsertionChild.clear(); |
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105 | } |
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106 | |
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107 | public void visitLeave(BlockStmtNode node) { |
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108 | insertTempDecls(node); |
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109 | insertTempAssigns(node); |
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110 | } |
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111 | |
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112 | public void visitLeave(AssignNode node) { |
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113 | bindTempDeclsToBlockStmt(node); |
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114 | bindTempAssignToBlockStmt(node); |
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115 | } |
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116 | |
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117 | public void visitLeave(WhileStmtNode node) { |
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118 | |
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119 | appendTempDeclsToWhileBody(node); // WARNING: appendTemp calls must precede bindTemp calls |
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120 | appendTempAssignsToWhileBody(node); |
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121 | |
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122 | bindTempDeclsToBlockStmt(node); |
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123 | bindTempAssignToBlockStmt(node); |
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124 | } |
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125 | |
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126 | public void visitLeave(IfStmtNode node) { |
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127 | bindTempDeclsToBlockStmt(node); |
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128 | bindTempAssignToBlockStmt(node); |
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129 | } |
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130 | |
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131 | public void visitLeave(FuncCallNode node) { |
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132 | |
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133 | |
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134 | if(S2KBuiltinsUtil.isCarry(node)) { |
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135 | |
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136 | if(!(node.getParent() instanceof AssignNode)) { |
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137 | |
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138 | BlockStmtNode blockStmt = Accessors.getEnclosingBlockStmt(node); |
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139 | Locator locator = blockStmt; |
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140 | IdentifierNode name = Generators.makeIdentifierNode(locator, labeller.newLabel()); |
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141 | StreamTypeNode type = Generators.makeStreamType(locator); |
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142 | VarDeclNode varDecl = Generators.makeVarDeclNode(locator, type, name.deepCopy()); |
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143 | AssignNode assignStmt = Generators.makeAssignNode(locator, name.deepCopy(), node.deepCopy()); |
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144 | |
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145 | addValueToList(enclBlockStmtTempDecls, blockStmt, varDecl); |
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146 | addValueToList(enclBlockStmtTempAssigns, blockStmt, assignStmt); |
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147 | |
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148 | node.updateSelf(name); |
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149 | } |
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150 | } |
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151 | } |
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152 | |
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153 | ////////////////////////////////////////////////////////////// |
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154 | // helpers |
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155 | |
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156 | private void appendTempAssignsToWhileBody(WhileStmtNode node) { |
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157 | BlockStmtNode whileBody = Accessors.body(node); |
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158 | BlockStmtNode blockStmt = Accessors.getEnclosingBlockStmt(node); |
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159 | if(enclBlockStmtTempAssigns.containsKey(blockStmt)) { |
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160 | for(ASTNode tempAssign : enclBlockStmtTempAssigns.get(blockStmt)) { |
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161 | whileBody.appendChild(tempAssign); |
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162 | } |
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163 | } |
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164 | } |
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165 | |
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166 | private void appendTempDeclsToWhileBody(WhileStmtNode node) { |
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167 | BlockStmtNode whileBody = Accessors.body(node); |
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168 | BlockStmtNode blockStmt = Accessors.getEnclosingBlockStmt(node); |
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169 | if(enclBlockStmtTempDecls.containsKey(blockStmt)) { |
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170 | for(ASTNode tempDecl : enclBlockStmtTempDecls.get(blockStmt)) { |
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171 | whileBody.appendChild(tempDecl); |
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172 | } |
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173 | } |
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174 | } |
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175 | |
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176 | private void insertTempAssigns(BlockStmtNode node) { |
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177 | if(tempAssignsInsertionChild.containsKey(node)) { |
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178 | List<Pair<ASTNode, List<ASTNode>>> pairs = tempAssignsInsertionChild.get(node); |
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179 | for(Pair<ASTNode, List<ASTNode>> pair : pairs) { |
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180 | for(ASTNode predecessor : pair.right()) { |
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181 | node.insertBeforeChild(pair.left(), predecessor); |
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182 | } |
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183 | } |
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184 | } |
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185 | } |
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186 | |
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187 | private void insertTempDecls(BlockStmtNode node) { |
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188 | if(tempDeclsInsertionChild.containsKey(node)) { |
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189 | List<Pair<ASTNode, List<ASTNode>>> pairs = tempDeclsInsertionChild.get(node); |
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190 | for(Pair<ASTNode, List<ASTNode>> pair : pairs) { |
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191 | for(ASTNode predecessor : pair.right()) { |
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192 | node.insertBeforeChild(pair.left(), predecessor); |
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193 | } |
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194 | } |
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195 | } |
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196 | } |
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197 | |
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198 | private void bindTempAssignToBlockStmt(ASTNode node) { |
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199 | BlockStmtNode blockStmt = Accessors.getEnclosingBlockStmt(node); |
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200 | if(enclBlockStmtTempAssigns.containsKey(blockStmt)) { |
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201 | addValueToList(tempAssignsInsertionChild, blockStmt, new Pair<ASTNode, List<ASTNode>>(node, enclBlockStmtTempAssigns.get(blockStmt))); |
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202 | enclBlockStmtTempAssigns.remove(blockStmt); |
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203 | } |
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204 | } |
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205 | |
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206 | private void bindTempDeclsToBlockStmt(ASTNode node) { |
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207 | BlockStmtNode blockStmt = Accessors.getEnclosingBlockStmt(node); |
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208 | if(enclBlockStmtTempDecls.containsKey(blockStmt)) { |
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209 | addValueToList(tempDeclsInsertionChild, blockStmt, new Pair<ASTNode, List<ASTNode>>(node, enclBlockStmtTempDecls.get(blockStmt))); |
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210 | enclBlockStmtTempDecls.remove(blockStmt); |
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211 | } |
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212 | } |
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213 | |
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214 | } |
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215 | } |
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216 | |
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