1 | package compiler.backend.visitors; |
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2 | |
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3 | import ast.*; |
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4 | |
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5 | import java.util.Iterator; |
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6 | import java.util.List; |
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7 | |
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8 | import compiler.ast.Accessors; |
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9 | import compiler.backend.visitors.helpers.CodeStore; |
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10 | import compiler.backend.visitors.helpers.UnparserUtil; |
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11 | import compiler.codeGenerator.visitors.helpers.*; |
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12 | import compiler.lang.carryset.CarrySet2CPP; |
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13 | import compiler.lang.pablo.Builtins2CPP; |
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14 | |
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15 | // |
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16 | // Design: This class clones the AST function body in the visit(FuncDefNode) method and |
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17 | // modifies the FuncDefNode body to handle atEOF, inFile and EOF_mask in block |
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18 | // final block processing. |
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19 | // |
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20 | |
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21 | // Target |
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22 | /* |
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23 | struct @name |
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24 | { |
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25 | @name() {} |
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26 | IDISA_INLINE void do_block(@parameters) |
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27 | { |
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28 | @do_block |
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29 | } |
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30 | IDISA_INLINE void do_final_block(@parameters) |
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31 | { |
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32 | @do_final_block |
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33 | } |
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34 | CarryArray<@carry_count, @carry_n_count> carryQ; |
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35 | }; |
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36 | */ |
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37 | |
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38 | public class CPPUnparser extends Unparser { |
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39 | |
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40 | ////////////////////////////////////////////////////////////// |
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41 | // constructor and helpers |
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42 | public CPPUnparser() {} |
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43 | |
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44 | public String getCode(ASTNode node) { |
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45 | CodeStore codeStore = (CodeStore)node.accept(this); |
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46 | return codeStore.toStringIndented(0); |
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47 | } |
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48 | |
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49 | public String getCode(ASTNode node, int indent) { |
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50 | CodeStore codeStore = (CodeStore)node.accept(this); |
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51 | return codeStore.toStringIndented(indent); |
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52 | } |
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53 | |
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54 | ////////////////////////////////////////////////////////////// |
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55 | // visitors |
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56 | public CodeStore visitLeave(ProgramNode node, List<CodeStore> childResults) { |
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57 | return UnparserUtil.concatenatedChildrenCode(new CodeStore(), childResults, false); |
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58 | } |
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59 | |
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60 | //public void visitEnter(DeclsNode node) { |
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61 | |
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62 | //} |
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63 | |
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64 | //public CodeStore visitLeave(DeclsNode node, List<CodeStore> childResults) { |
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65 | // return UnparserUtil.concatenatedChildrenCode(new CodeStore(), childResults, true); |
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66 | //} |
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67 | |
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68 | public CodeStore visitLeave(TypeDefNode node, List<CodeStore> childResults) { |
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69 | CodeStore code = new CodeStore(); |
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70 | |
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71 | String type = childResults.get(0).getResultVarName(); |
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72 | String alias = childResults.get(1).getResultVarName(); |
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73 | |
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74 | code.addFormattedLine("typedef %s %s;", type, alias); |
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75 | |
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76 | return code; |
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77 | } |
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78 | |
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79 | public CodeStore visitLeave(TypeDeclNode node, List<CodeStore> childResults) { |
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80 | CodeStore code = new CodeStore(); |
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81 | String type = childResults.get(0).getResultVarName(); |
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82 | String DeclList; |
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83 | if (Accessors.hasDeclList(node)) { |
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84 | DeclList = childResults.get(1).getResultVarName(); |
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85 | code.addFormattedLine("%s %s;", type, DeclList); |
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86 | |
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87 | } else { |
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88 | code.addFormattedLine("%s;", type); |
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89 | } |
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90 | return code; |
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91 | } |
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92 | |
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93 | public CodeStore visitLeave(DeclListNode node, List<CodeStore> childResults) { |
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94 | CodeStore code = new CodeStore(); |
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95 | Iterator<CodeStore> iter = childResults.iterator(); |
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96 | code.setResultVarName(UnparserUtil.makeDelimitedList(iter, ", ")); |
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97 | return code; |
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98 | } |
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99 | |
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100 | //////////////////////////////////////////////////////////////////////////// |
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101 | // Stream Funcs - User defined stream function (language extension point) |
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102 | //////////////////////////////////////////////////////////////////////////// |
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103 | public CodeStore visitLeave(FuncDefNode node, List<CodeStore> childResults) { |
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104 | |
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105 | |
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106 | |
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107 | CodeStore code = new CodeStore(); |
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108 | // CodeStore returnType = childResults.get(0); |
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109 | |
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110 | String funcName = childResults.get(1).getResultVarName(); |
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111 | String parameters = new String(); |
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112 | |
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113 | if(Accessors.hasParameters(node)) { |
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114 | parameters = childResults.get(2).getResultVarName(); |
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115 | } |
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116 | |
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117 | // TODO - CarryArray carry_count ... |
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118 | |
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119 | boolean isFinalBlock = false; |
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120 | CodeStore nonFinalBlockCodeStore = XFormBlockStmt(Accessors.blockStmtNode(node), isFinalBlock); |
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121 | |
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122 | isFinalBlock = true; |
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123 | CodeStore finalBlockCodeStore = XFormBlockStmt(Accessors.blockStmtNode(node), isFinalBlock); |
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124 | |
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125 | code.addFormattedLine("struct %s", funcName); |
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126 | code.addLine("{"); |
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127 | code.indentedFormattedLine("%s () {}", funcName); |
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128 | code.addFormattedLine("IDISA_INLINE void do_block(%s)", parameters); |
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129 | code.addLine("{"); |
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130 | code.addAll(nonFinalBlockCodeStore, 1); |
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131 | code.dedentedLine("}"); |
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132 | code.addFormattedLine("IDISA_INLINE void do_final_block(%s)", parameters); |
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133 | code.addLine("{"); |
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134 | code.addAll(finalBlockCodeStore, 1); |
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135 | code.dedentedLine("}"); |
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136 | code.addFormattedLine("CarryArray<%s,%s> carryQ;", "99", "99"); // CGO |
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137 | code.dedentedLine("};"); |
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138 | |
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139 | return code; |
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140 | } |
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141 | |
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142 | private CodeStore XFormBlockStmt(BlockStmtNode node, boolean isFinalBlock) { |
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143 | BlockStmtNode copy = node.deepCopy(); |
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144 | Pablo2CarryXFormer pablo2CarryQ = new Pablo2CarryXFormer(copy, new Builtins2CPP(), new CarrySet2CPP()); |
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145 | pablo2CarryQ.XForm(isFinalBlock); |
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146 | CodeStore codeStore = copy.accept(new CPPUnparser()); |
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147 | return codeStore; |
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148 | } |
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149 | |
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150 | public CodeStore visitLeave(ParameterListNode node, List<CodeStore> childResults) { |
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151 | CodeStore code = new CodeStore(); |
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152 | Iterator<CodeStore> iter = childResults.iterator(); |
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153 | code.setResultVarName(UnparserUtil.makeDelimitedList(iter, ", ")); |
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154 | return code; |
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155 | } |
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156 | |
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157 | // Parameter |
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158 | public CodeStore visitLeave(ParameterNode node, List<CodeStore> childResults) { |
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159 | CodeStore code = new CodeStore(); |
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160 | |
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161 | String type = childResults.get(0).getResultVarName(); |
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162 | String identifier = childResults.get(1).getResultVarName(); |
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163 | code.setResultVarName(type + " & " + identifier); |
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164 | |
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165 | return code; |
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166 | } |
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167 | |
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168 | //////////////////////////////////////////////////////////////////////////// |
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169 | // Stmts |
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170 | //////////////////////////////////////////////////////////////////////////// |
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171 | |
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172 | // Assign Stmt |
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173 | public CodeStore visitLeave(AssignNode node, List<CodeStore> childResults) { |
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174 | CodeStore code = new CodeStore(); |
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175 | CodeStore lhs = childResults.get(0); |
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176 | CodeStore rhs = childResults.get(1); |
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177 | code.addFormattedLine("%s %s %s;", lhs.getResultVarName() |
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178 | , Accessors.assignOperator(node) |
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179 | , rhs.getResultVarName()); |
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180 | |
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181 | return code; |
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182 | } |
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183 | |
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184 | // FuncCall Stmt |
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185 | public CodeStore visitLeave(FuncCallNode node, List<CodeStore> childResults) { |
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186 | CodeStore code = new CodeStore(); |
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187 | |
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188 | StringBuilder resultVar = new StringBuilder(); |
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189 | |
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190 | resultVar.append(childResults.get(0).getResultVarName()); |
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191 | resultVar.append("("); |
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192 | resultVar.append(childResults.get(1).getResultVarName()); |
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193 | resultVar.append(")"); |
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194 | |
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195 | code.setResultVarName(resultVar.toString()); // Function invocation as an expression |
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196 | |
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197 | code.addFormattedLine("%s;", resultVar.toString()); // Function invocation as a statement |
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198 | |
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199 | return code; |
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200 | } |
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201 | |
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202 | public CodeStore visitLeave(FuncCallArgListNode node, List<CodeStore> childResults) { |
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203 | CodeStore code = new CodeStore(); |
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204 | Iterator<CodeStore> iter = childResults.iterator(); |
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205 | code.setResultVarName(UnparserUtil.makeDelimitedList(iter, ", ")); |
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206 | return code; |
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207 | } |
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208 | |
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209 | // if Stmt |
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210 | public CodeStore visitLeave(IfStmtNode node, List<CodeStore> childResults) { |
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211 | CodeStore code = new CodeStore(); |
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212 | CodeStore ifTest = childResults.get(0); |
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213 | CodeStore ifBlockStmt = childResults.get(1); |
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214 | code.addFormattedLine("if (%s)", ifTest.getResultVarName()); |
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215 | code.addLine("{"); |
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216 | code.addAll(ifBlockStmt, 1); |
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217 | code.dedentedLine("}"); |
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218 | if(Accessors.hasElseBlockStmt(node)) { |
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219 | CodeStore elseBlockStmt = childResults.get(2); |
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220 | code.addLine("else"); |
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221 | code.addLine("{"); |
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222 | code.addAll(elseBlockStmt, 1); |
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223 | code.dedentedLine("}"); |
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224 | } |
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225 | return code; |
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226 | } |
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227 | |
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228 | // while Stmt |
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229 | public CodeStore visitLeave(WhileStmtNode node, List<CodeStore> childResults) { |
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230 | CodeStore code = new CodeStore(); |
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231 | CodeStore ifTest = childResults.get(0); |
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232 | CodeStore blockStmt = childResults.get(1); |
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233 | code.addFormattedLine("while (%s)", ifTest.getResultVarName()); |
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234 | code.addLine("{"); |
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235 | code.addAll(blockStmt, 1); |
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236 | code.dedentedLine("}"); |
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237 | return code; |
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238 | } |
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239 | |
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240 | // return Stmt |
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241 | public CodeStore visitLeave(ReturnStmtNode node, List<CodeStore> childResults) { |
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242 | CodeStore code = new CodeStore(); |
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243 | CodeStore child = childResults.get(0); |
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244 | code.addFormattedLine("return %s;", child.getResultVarName()); |
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245 | return code; |
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246 | } |
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247 | |
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248 | // Var Decl |
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249 | public CodeStore visitLeave(LocalVarDeclNode node, List<CodeStore> childResults) { |
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250 | |
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251 | CodeStore code = new CodeStore(); |
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252 | |
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253 | CodeStore type = (CodeStore)childResults.get(0); |
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254 | CodeStore identifier = (CodeStore)childResults.get(1); |
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255 | |
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256 | if(Accessors.hasInitializationAssign(node)) { |
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257 | |
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258 | CodeStore expression = (CodeStore)childResults.get(2); |
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259 | |
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260 | code.addFormattedLine("%s %s %s %s;", |
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261 | type.getResultVarName(), |
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262 | identifier.getResultVarName(), |
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263 | Accessors.assignOperator(node), |
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264 | expression.getResultVarName()); |
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265 | } else { |
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266 | |
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267 | code.addFormattedLine("%s %s;", |
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268 | type.getResultVarName(), |
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269 | identifier.getResultVarName()); |
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270 | } |
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271 | |
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272 | return code; |
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273 | } |
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274 | |
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275 | // public CodeStore visitLeave(AssignStmtNode node, List<CodeStore> childResults) { |
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276 | // CodeStore code = new CodeStore(); |
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277 | // code.setResultVarName(Accessors.AssignOperator(node)); |
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278 | // return code; |
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279 | // } |
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280 | |
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281 | // block Stmts |
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282 | public CodeStore visitLeave(BlockStmtNode node, List<CodeStore> childResults) { |
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283 | CodeStore code = new CodeStore(); |
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284 | |
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285 | if (childResults.isEmpty()) { |
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286 | code.addLine(""); // empty if / while |
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287 | } |
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288 | |
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289 | for (CodeStore child: childResults) { |
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290 | code.addAll(child, 0); |
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291 | } |
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292 | |
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293 | return code; |
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294 | } |
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295 | |
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296 | //////////////////////////////////////////////////////////////////////////// |
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297 | // Expressions |
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298 | //////////////////////////////////////////////////////////////////////////// |
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299 | |
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300 | // BinaryOperator |
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301 | public CodeStore visitLeave(BinaryOperatorNode node, List<CodeStore> childResults) { |
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302 | CodeStore code = new CodeStore(); |
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303 | CodeStore lhs = childResults.get(0); |
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304 | CodeStore rhs = childResults.get(1); |
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305 | String lhsCode = lhs.getResultVarName(); |
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306 | String rhsCode = rhs.getResultVarName(); |
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307 | |
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308 | StringBuffer resultVar = new StringBuffer(); |
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309 | |
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310 | if(!Accessors.isTerminal(Accessors.lhs(node))) { |
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311 | lhsCode = bracketExpressionCode(lhsCode); |
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312 | } |
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313 | resultVar.append(lhsCode); |
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314 | |
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315 | resultVar.append(" "); |
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316 | resultVar.append(Accessors.operator(node)); |
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317 | resultVar.append(" "); |
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318 | |
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319 | if(!Accessors.isTerminal(Accessors.rhs(node))) { |
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320 | rhsCode = bracketExpressionCode(rhsCode); |
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321 | } |
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322 | resultVar.append(rhsCode); |
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323 | |
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324 | code.setResultVarName(resultVar.toString()); |
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325 | |
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326 | return code; |
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327 | } |
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328 | |
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329 | //////////////////////////////////////////////////////////////////////////// |
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330 | // UnaryOperator |
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331 | //////////////////////////////////////////////////////////////////////////// |
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332 | public CodeStore visitLeave(UnaryOperatorNode node, List<CodeStore> childResults) { |
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333 | CodeStore code = new CodeStore(); |
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334 | CodeStore child = childResults.get(0); |
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335 | String childCode = child.getResultVarName(); |
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336 | |
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337 | StringBuffer resultVar = new StringBuffer(); |
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338 | resultVar.append(Accessors.operator(node)); |
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339 | |
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340 | if(!Accessors.isTerminal(Accessors.operand(node))) { |
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341 | childCode = bracketExpressionCode(childCode); |
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342 | } |
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343 | resultVar.append(childCode); |
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344 | |
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345 | code.setResultVarName(resultVar.toString()); |
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346 | return code; |
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347 | } |
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348 | |
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349 | private String bracketExpressionCode(String code) { |
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350 | StringBuffer buffer = new StringBuffer(); |
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351 | buffer.append("("); |
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352 | buffer.append(code); |
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353 | buffer.append(")"); |
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354 | return buffer.toString(); |
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355 | } |
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356 | |
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357 | //////////////////////////////////////////////////////////////////////////// |
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358 | // StringConstant |
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359 | //////////////////////////////////////////////////////////////////////////// |
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360 | public CodeStore visitLeave(StringConstantNode node, List<CodeStore> childResults) { |
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361 | CodeStore code = new CodeStore(); |
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362 | code.setResultVarName(Accessors.stringConstant(node)); |
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363 | return code; |
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364 | } |
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365 | |
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366 | //////////////////////////////////////////////////////////////////////////// |
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367 | // IntegerConstant |
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368 | //////////////////////////////////////////////////////////////////////////// |
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369 | public CodeStore visitLeave(IntegerConstantNode node, List<CodeStore> childResults) { |
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370 | CodeStore code = new CodeStore(); |
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371 | code.setResultVarName(Accessors.integerConstant(node)); |
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372 | return code; |
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373 | } |
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374 | |
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375 | |
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376 | //////////////////////////////////////////////////////////////////////////// |
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377 | // Types |
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378 | //////////////////////////////////////////////////////////////////////////// |
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379 | |
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380 | //////////////////////////////////////////////////////////////////////////// |
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381 | // Stream Structures |
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382 | //////////////////////////////////////////////////////////////////////////// |
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383 | // Struct Type - used both as a variable and as sequence of lines |
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384 | // |
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385 | public CodeStore visitLeave(StructTypeNode node, List<CodeStore> childResults) { |
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386 | |
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387 | CodeStore code = new CodeStore(); |
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388 | |
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389 | StringBuffer resultVar = new StringBuffer(); |
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390 | |
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391 | CodeStore structName = (CodeStore) childResults.get(0); |
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392 | |
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393 | // set variable |
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394 | resultVar.append("struct"); |
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395 | resultVar.append(" "); |
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396 | resultVar.append(structName.getResultVarName()); |
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397 | |
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398 | if (Accessors.hasStructBody(node)) { |
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399 | resultVar.append(CodeStore.NEWLINE); |
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400 | resultVar.append("{"); |
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401 | resultVar.append(CodeStore.NEWLINE); |
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402 | resultVar.append(childResults.get(1).toStringIndented(0)); |
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403 | resultVar.append("}"); |
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404 | } |
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405 | code.setResultVarName(resultVar.toString()); |
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406 | |
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407 | // code store lines |
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408 | code.addFormattedLine("struct %s", structName.getResultVarName()); |
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409 | code.addLine("{"); |
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410 | if(Accessors.hasStructBody(node)) { |
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411 | code.addAll(childResults.get(1),0); |
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412 | } |
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413 | code.dedentedLine("}"); |
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414 | |
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415 | return code; |
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416 | |
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417 | } |
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418 | |
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419 | // Struct Body |
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420 | public CodeStore visitLeave(StructTypeBodyNode node, List<CodeStore> childResults) { |
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421 | CodeStore code = new CodeStore(); |
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422 | |
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423 | for (CodeStore child: childResults.subList(0, 1)) { |
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424 | code.addAll(child,1); |
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425 | } |
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426 | for (CodeStore child: childResults.subList(1, childResults.size())) { |
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427 | code.addAll(child,0); |
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428 | } |
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429 | |
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430 | return code; |
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431 | } |
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432 | |
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433 | // Struct Member |
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434 | public CodeStore visitLeave(StructMemberNode node, List<CodeStore> childResults) { // a line of code |
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435 | CodeStore code = new CodeStore(); |
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436 | CodeStore type = childResults.get(0); |
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437 | CodeStore memberName = childResults.get(1); |
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438 | code.addFormattedLine("%s %s;", type.getResultVarName(), memberName.getResultVarName()); |
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439 | return code; |
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440 | } |
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441 | |
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442 | // Type |
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443 | //public CodeStore visitLeave(TypeNode node, List<CodeStore> childResults) { |
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444 | // return concatenatedChildrenCode(new CodeStore(), childResults, false); |
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445 | //} |
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446 | |
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447 | // Stream |
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448 | public CodeStore visitLeave(StreamTypeNode node, List<CodeStore> childResults) { |
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449 | CodeStore code = new CodeStore(); |
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450 | // TODO - Map stream --> BitBlock <-- stream, BitBlock <-- stream<1> |
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451 | // code.setResultVarName(Accessors.streamTypeName(node)); |
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452 | code.setResultVarName("BitBlock"); |
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453 | |
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454 | /* |
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455 | * TODO - 2^k field width types. |
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456 | * |
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457 | if(Accessors.hasFieldWidth(node)) { |
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458 | CodeStore fieldWidth; |
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459 | fieldWidth = childResults.get(0); |
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460 | code.setResultVarName(code.getResultVarName() + "<" + fieldWidth.getResultVarName() + ">"); |
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461 | } |
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462 | * |
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463 | * |
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464 | */ |
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465 | |
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466 | return code; |
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467 | } |
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468 | |
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469 | // Field Width |
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470 | public CodeStore visitLeave(FieldWidthNode node, List<CodeStore> childResults) { |
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471 | CodeStore code = new CodeStore(); |
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472 | code.setResultVarName(Accessors.fieldWidthValue(node)); |
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473 | return code; |
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474 | } |
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475 | |
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476 | // Void |
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477 | public CodeStore visitLeave(VoidNode node, List<CodeStore> childResults) { |
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478 | CodeStore code = new CodeStore(); |
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479 | code.setResultVarName(Accessors.voidValue(node)); |
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480 | return code; |
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481 | } |
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482 | |
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483 | // Compound Identifiers |
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484 | public CodeStore visitLeave(CompoundIdentifierNode node, List<CodeStore> childResults) { |
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485 | CodeStore code = new CodeStore(); |
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486 | Iterator<CodeStore> iter = childResults.iterator(); |
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487 | code.setResultVarName(UnparserUtil.makeDelimitedList(iter, ".")); |
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488 | return code; |
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489 | } |
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490 | |
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491 | // Identifiers |
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492 | public CodeStore visitLeave(IdentifierNode node, List<CodeStore> childResults) { |
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493 | CodeStore code = new CodeStore(); |
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494 | code.setResultVarName(Accessors.name(node)); |
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495 | return code; |
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496 | } |
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497 | |
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498 | } |
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