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| package net.sourceforge.pmd.dfa; |
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| import net.sourceforge.pmd.ast.*; |
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| public class StatementAndBraceFinder extends JavaParserVisitorAdapter { |
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| private Structure dataFlow; |
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19 |
46
| public void buildDataFlowFor(SimpleJavaNode node) {
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20 |
46
| if (!(node instanceof ASTMethodDeclaration) && !(node instanceof ASTConstructorDeclaration)) {
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21 |
1
| throw new RuntimeException("Can't build a data flow for anything other than a method or a constructor");
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22 |
| } |
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| |
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24 |
45
| this.dataFlow = new Structure();
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25 |
45
| this.dataFlow.createStartNode(node.getBeginLine());
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26 |
45
| this.dataFlow.createNewNode(node);
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28 |
45
| node.jjtAccept(this, dataFlow);
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30 |
45
| this.dataFlow.createEndNode(node.getEndLine());
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32 |
45
| Linker linker = new Linker(dataFlow.getBraceStack(), dataFlow.getContinueBreakReturnStack());
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33 |
45
| try {
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34 |
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| linker.computePaths();
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| } catch (LinkerException e) { |
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0
| e.printStackTrace();
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| } catch (SequenceException e) { |
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0
| e.printStackTrace();
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| } |
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| } |
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| |
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42 |
70
| public Object visit(ASTStatementExpression node, Object data) {
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70
| if (!(data instanceof Structure)) {
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0
| return data;
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| } |
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70
| Structure dataFlow = (Structure) data;
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70
| dataFlow.createNewNode(node);
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70
| return super.visit(node, data);
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| } |
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42
| public Object visit(ASTVariableDeclarator node, Object data) {
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| if (!(data instanceof Structure)) {
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0
| return data;
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| } |
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| Structure dataFlow = (Structure) data;
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| dataFlow.createNewNode(node);
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| return super.visit(node, data);
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| } |
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132
| public Object visit(ASTExpression node, Object data) {
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132
| if (!(data instanceof Structure)) {
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0
| return data;
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| } |
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132
| Structure dataFlow = (Structure) data;
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132
| if (node.jjtGetParent() instanceof ASTIfStatement) {
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27
| dataFlow.createNewNode(node);
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| dataFlow.pushOnStack(NodeType.IF_EXPR, dataFlow.getLast());
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105
| } else if (node.jjtGetParent() instanceof ASTWhileStatement) {
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3
| dataFlow.createNewNode(node);
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3
| dataFlow.pushOnStack(NodeType.WHILE_EXPR, dataFlow.getLast());
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102
| } else if (node.jjtGetParent() instanceof ASTSwitchStatement) {
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3
| dataFlow.createNewNode(node);
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| dataFlow.pushOnStack(NodeType.SWITCH_START, dataFlow.getLast());
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| } else if (node.jjtGetParent() instanceof ASTForStatement) {
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| dataFlow.createNewNode(node);
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| dataFlow.pushOnStack(NodeType.FOR_EXPR, dataFlow.getLast());
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79 |
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| } else if (node.jjtGetParent() instanceof ASTDoStatement) {
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3
| dataFlow.createNewNode(node);
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| dataFlow.pushOnStack(NodeType.DO_EXPR, dataFlow.getLast());
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| } |
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| return super.visit(node, data);
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| } |
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| public Object visit(ASTForInit node, Object data) {
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21
| if (!(data instanceof Structure)) {
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0
| return data;
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| } |
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| Structure dataFlow = (Structure) data;
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| super.visit(node, data);
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| dataFlow.pushOnStack(NodeType.FOR_INIT, dataFlow.getLast());
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| this.addForExpressionNode(node, dataFlow);
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| return data;
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| } |
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1
| public Object visit(ASTLabeledStatement node, Object data) {
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1
| dataFlow.createNewNode(node);
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1
| dataFlow.pushOnStack(NodeType.LABEL_STATEMENT, dataFlow.getLast());
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101 |
1
| return super.visit(node, data);
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| } |
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21
| public Object visit(ASTForUpdate node, Object data) {
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105 |
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| if (!(data instanceof Structure)) {
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0
| return data;
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| } |
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108 |
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| Structure dataFlow = (Structure) data;
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109 |
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| this.addForExpressionNode(node, dataFlow);
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110 |
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| super.visit(node, data);
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111 |
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| dataFlow.pushOnStack(NodeType.FOR_UPDATE, dataFlow.getLast());
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112 |
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| return data;
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| } |
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178
| public Object visit(ASTStatement node, Object data) {
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178
| if (!(data instanceof Structure)) {
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0
| return data;
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| } |
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122 |
178
| Structure dataFlow = (Structure) data;
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124 |
178
| if (node.jjtGetParent() instanceof ASTForStatement) {
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125 |
26
| this.addForExpressionNode(node, dataFlow);
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126 |
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| dataFlow.pushOnStack(NodeType.FOR_BEFORE_FIRST_STATEMENT, dataFlow.getLast());
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127 |
152
| } else if (node.jjtGetParent() instanceof ASTDoStatement) {
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128 |
3
| dataFlow.pushOnStack(NodeType.DO_BEFORE_FIRST_STATEMENT, dataFlow.getLast());
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129 |
3
| dataFlow.createNewNode((SimpleNode) node.jjtGetParent());
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| } |
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132 |
178
| super.visit(node, data);
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134 |
178
| if (node.jjtGetParent() instanceof ASTIfStatement) {
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135 |
38
| ASTIfStatement st = (ASTIfStatement) node.jjtGetParent();
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136 |
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| if (!st.hasElse()) {
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137 |
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| dataFlow.pushOnStack(NodeType.IF_LAST_STATEMENT_WITHOUT_ELSE, dataFlow.getLast());
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138 |
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| } else if (st.hasElse() && !st.jjtGetChild(1).equals(node)) {
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| dataFlow.pushOnStack(NodeType.ELSE_LAST_STATEMENT, dataFlow.getLast());
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| } else { |
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| dataFlow.pushOnStack(NodeType.IF_LAST_STATEMENT, dataFlow.getLast());
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| } |
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143 |
140
| } else if (node.jjtGetParent() instanceof ASTWhileStatement) {
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144 |
3
| dataFlow.pushOnStack(NodeType.WHILE_LAST_STATEMENT, dataFlow.getLast());
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145 |
137
| } else if (node.jjtGetParent() instanceof ASTForStatement) {
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146 |
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| dataFlow.pushOnStack(NodeType.FOR_END, dataFlow.getLast());
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147 |
111
| } else if (node.jjtGetParent() instanceof ASTLabeledStatement) {
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148 |
1
| dataFlow.pushOnStack(NodeType.LABEL_LAST_STATEMENT, dataFlow.getLast());
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| } |
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150 |
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| return data;
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| } |
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| |
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153 |
3
| public Object visit(ASTSwitchStatement node, Object data) {
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154 |
3
| if (!(data instanceof Structure)) {
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155 |
0
| return data;
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156 |
| } |
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157 |
3
| Structure dataFlow = (Structure) data;
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158 |
3
| super.visit(node, data);
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159 |
3
| dataFlow.pushOnStack(NodeType.SWITCH_END, dataFlow.getLast());
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160 |
3
| return data;
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161 |
| } |
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163 |
5
| public Object visit(ASTSwitchLabel node, Object data) {
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164 |
5
| if (!(data instanceof Structure)) {
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165 |
0
| return data;
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| } |
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167 |
5
| Structure dataFlow = (Structure) data;
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| |
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169 |
5
| if (node.jjtGetNumChildren() == 0) {
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170 |
2
| dataFlow.pushOnStack(NodeType.SWITCH_LAST_DEFAULT_STATEMENT, dataFlow.getLast());
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| } else { |
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172 |
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| dataFlow.pushOnStack(NodeType.CASE_LAST_STATEMENT, dataFlow.getLast());
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| } |
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174 |
5
| return data;
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| } |
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177 |
5
| public Object visit(ASTBreakStatement node, Object data) {
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178 |
5
| if (!(data instanceof Structure)) {
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179 |
0
| return data;
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180 |
| } |
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181 |
5
| Structure dataFlow = (Structure) data;
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182 |
5
| dataFlow.createNewNode(node);
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183 |
5
| dataFlow.pushOnStack(NodeType.BREAK_STATEMENT, dataFlow.getLast());
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184 |
5
| return super.visit(node, data);
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185 |
| } |
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186 |
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187 |
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188 |
1
| public Object visit(ASTContinueStatement node, Object data) {
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189 |
1
| if (!(data instanceof Structure)) {
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190 |
0
| return data;
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191 |
| } |
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192 |
1
| Structure dataFlow = (Structure) data;
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193 |
1
| dataFlow.createNewNode(node);
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194 |
1
| dataFlow.pushOnStack(NodeType.CONTINUE_STATEMENT, dataFlow.getLast());
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195 |
1
| return super.visit(node, data);
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196 |
| } |
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| |
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198 |
0
| public Object visit(ASTReturnStatement node, Object data) {
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199 |
0
| if (!(data instanceof Structure)) {
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200 |
0
| return data;
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201 |
| } |
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202 |
0
| Structure dataFlow = (Structure) data;
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203 |
0
| dataFlow.createNewNode(node);
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204 |
0
| dataFlow.pushOnStack(NodeType.RETURN_STATEMENT, dataFlow.getLast());
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205 |
0
| return super.visit(node, data);
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206 |
| } |
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209 |
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211 |
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212 |
68
| private void addForExpressionNode(SimpleNode node, Structure dataFlow) {
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213 |
68
| ASTForStatement parent = (ASTForStatement) node.jjtGetParent();
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214 |
68
| boolean hasExpressionChild = false;
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215 |
68
| boolean hasForInitNode = false;
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216 |
68
| boolean hasForUpdateNode = false;
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217 |
| |
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218 |
68
| for (int i = 0; i < parent.jjtGetNumChildren(); i++) {
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219 |
249
| if (parent.jjtGetChild(i) instanceof ASTExpression)
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220 |
59
| hasExpressionChild = true;
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221 |
190
| else if (parent.jjtGetChild(i) instanceof ASTForUpdate)
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222 |
61
| hasForUpdateNode = true;
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223 |
129
| else if (parent.jjtGetChild(i) instanceof ASTForInit)
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224 |
61
| hasForInitNode = true;
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225 |
| } |
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226 |
68
| if (!hasExpressionChild) {
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227 |
9
| if (node instanceof ASTForInit) {
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228 |
2
| dataFlow.createNewNode(node);
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229 |
2
| dataFlow.pushOnStack(NodeType.FOR_EXPR, dataFlow.getLast());
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230 |
7
| } else if (node instanceof ASTForUpdate) {
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231 |
2
| if (!hasForInitNode) {
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232 |
1
| dataFlow.createNewNode(node);
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233 |
1
| dataFlow.pushOnStack(NodeType.FOR_EXPR, dataFlow.getLast());
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234 |
| } |
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235 |
5
| } else if (node instanceof ASTStatement) {
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236 |
5
| if (!hasForInitNode && !hasForUpdateNode) {
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237 |
2
| dataFlow.createNewNode(node);
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238 |
2
| dataFlow.pushOnStack(NodeType.FOR_EXPR, dataFlow.getLast());
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239 |
| } |
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240 |
| } |
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241 |
| } |
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242 |
| } |
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| } |