/**
* Parses the expression from the given token stack
*/
int CodeParser::parseExpression( Scope* scope, TokenStack* stack ) {
int errorCode = 0;
Token* t;
// gather the arguments up to the end of the statement
TokenStack* substack = getStackToEndOfStatement( stack );
// get the argument list
while( !errorCode && substack->hasNext() && ( t = substack->next() ) ) {
printf( "CodeParser::parseExpression: '%s' [%s]\n", t->getText(), t->getTypeName() );
// handle the token by type
switch( t->getType() ) {
case tok::ALPHA_NUMERIC:
// is the argument a field?
if( scope->lookupField( t->getText() ) ) {
printf( "CodeParser::parseExpression: Field - [%s]\n", t->getText() );
}
// is it a method call?
else if( substack->hasNext() && substack->peek()->getType() == tok::PARENTHESIS_BLOCK ) {
errorCode = parseExpression_MethodCall( t->getText(), scope, substack );
}
break;
case tok::DECIMAL:
case tok::INTEGER:
break;
case tok::DQUOTE_TEXT:
break;
case tok::SQUOTE_TEXT:
break;
case tok::OPERATOR:
break;
case tok::PARENTHESIS_BLOCK:
break;
default:
errorCode = -1;
SYNTAX_ERROR( "unexpected token", substack->last() );
}
}
// delete the stack
delete substack;
// return the error code
return errorCode;
}
/**
* Parses method call parameters
*/
int CodeParser::parseMethodParameters( Scope* scope, TokenStack* stack, list<Parameter*> params ) {
Token* t;
// the next token must be a parenthesis block (e.g. "( .. )")
if( !( t = stack->next() ) || ( t->getType() != tok::PARENTHESIS_BLOCK ) ) {
SYNTAX_ERROR( "Symbol '(' expected", stack->last() );
return -1;
}
// get the sub-stack
TokenStack* substack = ((ComplexToken*)t)->getChildren();
// gather the parameters
while( ( t = substack->next() ) ) {
printf( "CodeParser::parseMethodParameters token: %s\n", t->getText() );
// TODO add method parameter parsing logic here
}
return 0;
}
