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updated parseFactor

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This commit is contained in:
Ernesto Estrada
2018-10-22 13:35:22 -06:00
parent c6f37284a0
commit e73f7e050a
1 changed files with 8 additions and 32 deletions
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Corgi/Parser.java
+7 -31
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@@ -126,51 +126,27 @@ public class Parser {
if ( token.isKind("num") ) {
return new Node("num", token.getDetails(), null, null, null );
}
else if ( token.isKind("var") ) {
return new Node("var", token.getDetails(), null, null, null );
}
else if ( token.matches("single","(") ) {
Node first = parseExpr();
token = lex.getNextToken();
errorCheck( token, "single", ")" );
return first;
}
else if ( token.isKind("bif0") ) {
String bifName = token.getDetails();
token = lex.getNextToken();
errorCheck( token, "single", "(" );
token = lex.getNextToken();
errorCheck( token, "single", ")" );
return new Node( bifName, null, null, null );
}
else if ( token.isKind("bif1") ) {
String bifName = token.getDetails();
token = lex.getNextToken();
errorCheck( token, "single", "(" );
Node first = parseExpr();
token = lex.getNextToken();
errorCheck( token, "single", ")" );
return new Node( bifName, first, null, null );
}
else if ( token.isKind("bif2") ) {
String bifName = token.getDetails();
token = lex.getNextToken();
errorCheck( token, "single", "(" );
Node first = parseExpr();
token = lex.getNextToken();
errorCheck( token, "single", "," );
Node second = parseExpr();
token = lex.getNextToken();
errorCheck( token, "single", ")" );
return new Node( bifName, first, second, null );
}
else if ( token.matches("single","-") ) {
Node first = parseFactor();
return new Node("opp", first, null, null );
}
else if (token.isKind("funcCall")) {
return new Node("funcCall", token.getDetails(), null, null, null);
}
else {
System.out.println("Can't have factor starting with " + token );
System.exit(1);