@Override
public void enterProgramHeading(pascalParser.ProgramHeadingContext ctx) {
programName = ctx.getChild(1).getText();
ST st = stg.getInstanceOf("enterProgram");
st.add("v", programName);
System.out.println(st.render());
}
@Override
public void enterAssignmentStatement(pascalParser.AssignmentStatementContext ctx) {
ST st = stg.getInstanceOf("assignment");
st.add("ident", ctx.getChild(0).getText());
st.add("value", ctx.getChild(2).getText());
System.out.print(st.render().trim() + "\n");
}
@Override
public void enterConstantDefinitionPart(pascalParser.ConstantDefinitionPartContext ctx) {
List<ParseTree> values = ctx.children;
ArrayList<String> valueNames = new ArrayList<String>();
for (int i = 1; i < ctx.getChildCount(); i += 3) valueNames.add(values.get(i).getText());
ST st = stg.getInstanceOf("VAR");
st.add("values", valueNames);
System.out.println(st.render());
}
@Override
public void enterVariableDeclaration(pascalParser.VariableDeclarationContext ctx) {
// for variables
List<ParseTree> values = ctx.children;
ArrayList<String> valueNames = new ArrayList<String>();
for (int i = 0; i < ctx.getChildCount(); i += 3) valueNames.add(values.get(i).getText());
ST st = stg.getInstanceOf("VAR");
st.add("values", valueNames);
System.out.println(st.render());
}
@Override
public void enterIfStatement(pascalParser.IfStatementContext ctx) {
String comp = ctx.getChild(1).getChild(1).getText();
if (comp.compareTo("=") == 0) comp = "==";
ST st = stg.getInstanceOf("ifClause");
st.add("operand1", ctx.getChild(1).getChild(0).getText());
st.add("comparator", comp);
st.add("operand2", ctx.getChild(1).getChild(2).getText());
System.out.print(st.render().trim() + "\n");
}
@Override
public void enterForStatement(pascalParser.ForStatementContext ctx) {
String comp = ctx.getChild(3).getChild(1).getText();
if (comp.compareTo("TO") == 0) comp = "<=";
String comp1 = ctx.getChild(2).getText();
if (comp1.compareTo(":=") == 0) comp1 = "=";
ST st = stg.getInstanceOf("ForLoop");
st.add("operand1", ctx.getChild(1).getText());
st.add("comparator", comp);
st.add("operand2", ctx.getChild(3).getChild(0).getText());
st.add("operand3", ctx.getChild(3).getChild(2).getText());
System.out.print(st.render().trim() + "\n");
}
@Override
public void enterProcedureOrFunctionDeclaration(
pascalParser.ProcedureOrFunctionDeclarationContext ctx) {
// for procedures
ST st = stg.getInstanceOf("enterProcedure");
st.add("v", ctx.getChild(0).getChild(1).getText());
for (int k = 1; k < ctx.getChild(0).getChild(2).getChildCount(); k += 2) {
for (int i = 1; i < ctx.getChild(0).getChild(2).getChild(k).getChildCount(); i += 1) {
for (int j = 0;
j < ctx.getChild(0).getChild(2).getChild(k).getChild(i).getChildCount();
j += 3) {
st.add(
"values", ctx.getChild(0).getChild(2).getChild(k).getChild(i).getChild(j).getText());
}
}
}
System.out.print(st.render().trim() + "\n");
}
@Override
public void enterProcedureStatement(pascalParser.ProcedureStatementContext ctx) {
String procName = ctx.getChild(0).getText();
List<ParseTree> values = ctx.children;
ArrayList<String> params = new ArrayList<String>();
ArrayList<String> test = new ArrayList<String>();
ST st = stg.getInstanceOf("procCall");
for (int j = 2; j < ctx.getChildCount(); j += 4) {
for (int i = 0; i < ctx.getChild(j).getChildCount(); i += 2)
params.add(values.get(2).getChild(i).getText());
if (ctx.getChild(0).getText().compareTo("write") == 0) {
return;
} else if (ctx.getChild(0).getText().compareTo("writeln") == 0) {
return;
} else if (ctx.getChild(0).getText().compareTo("Write") == 0) {
return;
} else if (ctx.getChild(0).getText().compareTo("Writeln") == 0) {
return;
} else if (ctx.getChild(0).getText().compareTo("readln") == 0) {
return;
} else if (ctx.getChild(0).getText().compareTo("Readln") == 0) {
return;
} else {
st.add("v", procName);
st.add("values", params);
System.out.println(st.render());
}
}
// attempt at look ahead method
/*for (int h=0; h<ctx.getChildCount(); h+=1)
test.add(values.get(0).getText());
for (String test : input) {
if (test.matches("(?!.*write).*PROCEDURE.*")) {
System.out.println(test + ": matches");
} else {
System.out.println(test + ": does not match");
}
}*/
}
@Override
public void enterBlock(pascalParser.BlockContext ctx) {
ArrayList<String> procName = new ArrayList<String>();
ArrayList<String> varName = new ArrayList<String>();
ST st = stg.getInstanceOf("enterProcedure");
for (int h = 2; h < ctx.getChild(0).getChild(1).getChildCount(); h += 10) {
for (int j = 3; j < ctx.getChild(0).getChild(1).getChild(0).getChildCount(); j += 10) {
for (int i = 1; i < ctx.getChild(0).getChild(1).getChild(0).getChildCount(); i += 10) {
procName.add(ctx.getChild(0).getChild(1).getChild(0).getChild(i).getText());
if (procName.get(0).compareTo(",") == 0) {
return;
} else {
st.add("v", procName);
st.add("values", ctx.getChild(0).getChild(1).getChild(0).getChild(j));
st.add("values", ctx.getChild(0).getChild(1).getChild(h).getText());
System.out.println(st.render());
}
}
}
}
}
@Override
public void exitSimpleStatement(pascalParser.SimpleStatementContext ctx) {
List<ParseTree> values = ctx.children;
ArrayList<String> valueNames = new ArrayList<String>();
for (int i = 0; i < ctx.getChild(0).getChildCount(); i += 5)
valueNames.add(values.get(i).getText());
for (int j = 0; j < ctx.getChild(0).getChildCount(); j++) {
if (ctx.getChild(0).getText().compareTo("Readln") == 0) {
ST st = stg.getInstanceOf("ReadIn");
st.add("v", valueNames);
System.out.println(st.render().trim());
} else if (ctx.getChild(0).getText().compareTo("Readkey") == 0) {
ST st = stg.getInstanceOf("ReadIn");
st.add("v", valueNames);
System.out.println(st.render().trim());
} else if (ctx.getChild(0).getChild(j).getText().compareTo("Num1") == 0) {
ST st = stg.getInstanceOf("ReadIn");
st.add("v", valueNames);
System.out.println(st.render().trim());
} else if (ctx.getChild(0).getChild(j).getText().compareTo("Num2") == 0) {
ST st = stg.getInstanceOf("ReadIn");
st.add("v", valueNames);
System.out.println(st.render().trim());
} else if (ctx.getChild(0).getChild(j).getText().compareTo("readln") == 0) {
ST st = stg.getInstanceOf("ReadIn");
st.add("v", valueNames);
System.out.println(st.render().trim());
}
}
}
@Override
public void exitProgram(pascalParser.ProgramContext ctx) {
ST st = stg.getInstanceOf("exitProgram");
st.add("v", programName);
System.out.println(st.render());
}