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Update Parser.java #4

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Update Parser.java #4

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17 changes: 10 additions & 7 deletions src/compiler/Parser.java
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Original file line number Diff line number Diff line change
Expand Up @@ -98,6 +98,7 @@ private void STMT_LIST(final TreeNode parentNode) throws ParseException {
list.add(Token.READ);
list.add(Token.IF);
list.add(Token.WHILE);
list.add(Token.DO);

if(list.contains(lexer.currentToken()))
{
Expand Down Expand Up @@ -132,25 +133,27 @@ else if (lexer.currentToken() == Token.IF) {
this.CONDITION(thisNode);
this.MATCH(thisNode, Token.THEN);
this.STMT_LIST(thisNode);

if (lexer.currentToken() == Token.ELSE) {
this.MATCH(thisNode, Token.ELSE);
this.STMT_LIST(thisNode);
}

this.MATCH(thisNode, Token.FI);
}
else if (lexer.currentToken() == Token.WHILE){
else if (lexer.currentToken() == Token.DO) { //Meaning this is do until
this.MATCH(thisNode, Token.DO); //It annoys me I don't know how to implement it not being in a while loop
this.STMT_LIST(thisNode);
this.MATCH(thisNode, Token.UNTIL);
this.CONDITION(thisNode);
}
else{ //Meaning this is a while loop
this.MATCH(thisNode, Token.WHILE);
this.CONDITION(thisNode);
this.MATCH(thisNode, Token.DO);
this.STMT_LIST(thisNode);
this.MATCH(thisNode, Token.OD);
}
else if (lexer.currentToken() == Token.DO) { //Meaning this is do until
this.MATCH(thisNode, Token.DO);
this.STMT_LIST(thisNode);
this.MATCH(thisNode, Token.UNTIL);
this.CONDITION(thisNode);
}
}

// <EXPR> ::= <TERM> <TERM_TAIL>
Expand Down