1 files changed, 316 insertions, 0 deletions
diff --git a/sli/common/src/main/java/org/openecomp/sdnc/sli/SvcLogicExprListener.java b/sli/common/src/main/java/org/openecomp/sdnc/sli/SvcLogicExprListener.java
new file mode 100644
index 0000000..49ad0da
--- /dev/null
+++ b/sli/common/src/main/java/org/openecomp/sdnc/sli/SvcLogicExprListener.java
@@ -0,0 +1,316 @@
+/*-
+ * ============LICENSE_START=======================================================
+ * openECOMP : SDN-C
+ * ================================================================================
+ * Copyright (C) 2017 AT&T Intellectual Property. All rights
+ *                         reserved.
+ * ================================================================================
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ * 
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ * 
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ * ============LICENSE_END=========================================================
+ */
+
+package org.openecomp.sdnc.sli;
+
+import java.util.LinkedList;
+import java.util.List;
+
+import org.antlr.v4.runtime.tree.TerminalNode;
+import org.openecomp.sdnc.sli.ExprGrammarParser.AddExprContext;
+import org.openecomp.sdnc.sli.ExprGrammarParser.AtomContext;
+import org.openecomp.sdnc.sli.ExprGrammarParser.CompareExprContext;
+import org.openecomp.sdnc.sli.ExprGrammarParser.ConstantContext;
+import org.openecomp.sdnc.sli.ExprGrammarParser.ExprContext;
+import org.openecomp.sdnc.sli.ExprGrammarParser.FuncExprContext;
+import org.openecomp.sdnc.sli.ExprGrammarParser.MultExprContext;
+import org.openecomp.sdnc.sli.ExprGrammarParser.ParenExprContext;
+import org.openecomp.sdnc.sli.ExprGrammarParser.RelExprContext;
+import org.openecomp.sdnc.sli.ExprGrammarParser.VariableContext;
+import org.openecomp.sdnc.sli.ExprGrammarParser.VariableLeadContext;
+import org.openecomp.sdnc.sli.ExprGrammarParser.VariableTermContext;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+
+public class SvcLogicExprListener extends ExprGrammarBaseListener 
+{
+
+
+
+
+	private static final Logger LOG = LoggerFactory
+			.getLogger(SvcLogicExprListener.class);
+	
+	private SvcLogicExpression curExpr;
+	private SvcLogicExpression topExpr;
+	private LinkedList<SvcLogicExpression> exprStack;
+	
+	public SvcLogicExprListener()
+	{
+		exprStack = new LinkedList<SvcLogicExpression>();
+	}
+	
+	public SvcLogicExpression getParsedExpr()
+	{
+		return(curExpr);
+	}
+
+	private void pushOperand(SvcLogicExpression operand)
+	{
+		if (curExpr == null)
+		{
+			curExpr = operand;
+		}
+		else
+		{
+			curExpr.addOperand(operand);
+		}
+	}
+	
+	private void pushExpr(SvcLogicExpression expr)
+	{
+		LOG.debug("Pushing expression ["+expr.getClass().getName()+"]");
+		if (curExpr != null)
+		{
+			exprStack.push(curExpr);
+		}
+		curExpr = expr;
+	}
+	
+	private void popExpr()
+	{
+		if (exprStack.isEmpty())
+		{
+			LOG.debug("Popping last expression");
+			topExpr = curExpr;
+		}
+		else
+		{
+			SvcLogicExpression lastExpr = curExpr;
+			curExpr = exprStack.pop();
+			curExpr.addOperand(lastExpr);
+			LOG.debug("New curExpr is ["+curExpr.getClass().getName()+"]");
+		}
+		
+	}
+	
+	@Override
+	public void enterAtom(AtomContext ctx) {
+		
+		String atomText = ctx.getText();
+		
+		LOG.debug("enterAtom: text = "+atomText);
+
+		
+		SvcLogicAtom newAtom = new SvcLogicAtom(atomText);
+		
+		pushExpr(newAtom);
+	}
+
+
+	@Override
+	public void enterMultExpr(MultExprContext ctx) {
+		LOG.debug("enterMultExpr: text = "+ctx.getText());
+		
+		SvcLogicBinaryExpression curBinExpr = new SvcLogicBinaryExpression();
+		pushExpr(curBinExpr);
+		
+		List<TerminalNode> opList = ctx.MULTOP();
+		
+		for (TerminalNode nd : opList)
+		{
+			LOG.debug("enterMultExpr: operator - "+nd.getText());
+			curBinExpr.addOperator(nd.getText());
+		}
+
+	}
+
+	@Override
+	public void exitMultExpr(MultExprContext ctx) {
+
+		LOG.debug("exitMultExpr: text = "+ctx.getText());
+
+		popExpr();
+		
+	}
+
+	@Override
+	public void exitAtom(AtomContext ctx) {
+		LOG.debug("exitAtom: text = "+ctx.getText());
+		popExpr();
+	}
+
+	@Override
+	public void enterAddExpr(AddExprContext ctx) {
+		LOG.debug("enterAddExpr: text = "+ctx.getText());
+		List<TerminalNode> opList = ctx.ADDOP();
+		
+
+		SvcLogicBinaryExpression curBinExpr = new SvcLogicBinaryExpression();
+		pushExpr(curBinExpr);
+
+		
+		for (TerminalNode nd : opList)
+		{
+			LOG.debug("enterAddExpr: operator - "+nd.getText());
+			curBinExpr.addOperator(nd.getText());
+		}
+		
+	}
+
+	@Override
+	public void exitAddExpr(AddExprContext ctx) {
+		LOG.debug("exitAddExpr: text = "+ctx.getText());
+		
+		popExpr();
+	}
+
+	@Override
+	public void enterFuncExpr(FuncExprContext ctx) {
+		LOG.debug("enterFuncExpr: text = "+ctx.getText());
+		LOG.debug("enterFuncExpr - IDENTIFIER : "+ctx.IDENTIFIER().getText());
+		
+		for (ExprContext expr: ctx.expr())
+		{
+			LOG.debug("enterFuncExpr - expr = "+expr.getText());
+		}
+		
+
+		pushExpr(new SvcLogicFunctionCall(ctx.IDENTIFIER().getText()));
+	}
+
+	@Override
+	public void exitFuncExpr(FuncExprContext ctx) {
+		LOG.debug("exitFuncExpr: text = "+ctx.getText());
+		
+		popExpr();
+	}
+
+	@Override
+	public void enterParenExpr(ParenExprContext ctx) {
+		LOG.debug("enterParenExpr: text = "+ctx.getText());
+		LOG.debug("enterParenExpr: expr = "+ctx.expr().getText());
+	}
+
+	@Override
+	public void exitParenExpr(ParenExprContext ctx) {
+		LOG.debug("exitParenExpr: text = "+ctx.getText());
+	}
+
+	@Override
+	public void enterRelExpr(RelExprContext ctx) {
+		LOG.debug("enterRelExpr: text = "+ctx.getText());
+		
+		List<TerminalNode> opList = ctx.RELOP();
+		
+
+		SvcLogicBinaryExpression curBinExpr = new SvcLogicBinaryExpression();
+		pushExpr(curBinExpr);
+
+		
+		for (TerminalNode nd : opList)
+		{
+			LOG.debug("enterRelExpr: operator - "+nd.getText());
+			curBinExpr.addOperator(nd.getText());
+		}
+		
+	}
+
+	@Override
+	public void exitRelExpr(RelExprContext ctx) {
+		LOG.debug("exitRelExpr: text = "+ctx.getText());
+		
+		popExpr();
+	}
+
+	@Override
+	public void enterCompareExpr(CompareExprContext ctx) {
+		LOG.debug("enterCompareExpr: text = "+ctx.getText());
+		
+		TerminalNode nd = ctx.COMPAREOP();
+
+		SvcLogicBinaryExpression curBinExpr = new SvcLogicBinaryExpression();
+		pushExpr(curBinExpr);
+
+		LOG.debug("enterCompareExpr: operator - "+nd.getText());
+		curBinExpr.addOperator(nd.getText());
+
+	}
+
+	@Override
+	public void exitCompareExpr(CompareExprContext ctx) {
+		LOG.debug("exitCompareExpr : text = "+ctx.getText());
+		
+		popExpr();
+	}
+
+
+	
+	@Override 
+	public void enterConstant(ConstantContext ctx) {
+		LOG.debug("enterConstant: text = "+ctx.getText());
+	}
+
+	@Override
+	public void exitConstant(ConstantContext ctx) {
+		LOG.debug("exitConstant: text = "+ctx.getText());
+	}
+
+
+	@Override
+	public void enterVariable(VariableContext ctx) {
+		LOG.debug("enterVariable: text = "+ctx.getText());
+		
+		
+	}
+
+	@Override
+	public void exitVariable(VariableContext ctx) {
+		LOG.debug("exitVariable: text ="+ctx.getText());
+		
+	}
+	
+
+	@Override
+	public void enterVariableLead(VariableLeadContext ctx) {
+
+		LOG.debug("enterVariableLead: text ="+ctx.getText());
+		
+
+	}
+
+	@Override
+	public void exitVariableLead(VariableLeadContext ctx) {
+
+		LOG.debug("exitVariableLead: text ="+ctx.getText());
+	}
+
+	@Override
+	public void enterVariableTerm(VariableTermContext ctx) {
+		LOG.debug("enterVariableTerm: text ="+ctx.getText());
+		
+		String name = ctx.getText();
+		
+		int subscrStart = name.indexOf("[");
+		if (subscrStart > -1)
+		{
+			name = name.substring(0, subscrStart);
+		}
+		SvcLogicVariableTerm vterm = new SvcLogicVariableTerm(name);
+		pushExpr(vterm);
+	}
+
+	@Override
+	public void exitVariableTerm(VariableTermContext ctx) {
+		LOG.debug("exitVariableTerm: text="+ctx.getText());
+		popExpr();
+	}
+}