/// primary
/// ::= identifierexpr
/// ::= numberexpr
/// ::= parenexpr
static ExprAST *ParsePrimary() {
switch (CurTok) {
default: return Error("unknown token when expecting an expression");
case tok_identifier: return ParseIdentifierExpr();
case tok_number: return ParseNumberExpr();
case '(': return ParseParenExpr();
}
}
/// primary
/// ::= identifierexpr
/// ::= numberexpr
/// ::= parenexpr
static ExprAST *ParsePrimary() {
switch (CurTok) {
default: return Error("unknown token when expecting an expression");
case tok_identifier: printf("<identifier, %s>\n", IdentifierStr.c_str()); return ParseIdentifierExpr();
case tok_number: printf("<number, %f>\n", NumVal); return ParseNumberExpr();
case '(': return ParseParenExpr();
}
}
ExprAST * FAO::ParsePrimary()
{
switch (cur_token_.GetType()){
case TokenType::TOKEN_INTEGER:
return ParseNumberExpr();
case TokenType::TOKEN_LEFT_PARAM:
return ParseParentExpr();
default:
return Error("unknow token when expecting an expression");
}
}
/* Handles primary expressions, where
* primary ::= identifierexpr
* ::= numberexpr
* ::= parenexpr
* by using look-ahead to see what kind of expression
* we should parse.
*/
static std::unique_ptr<ExprAST> ParsePrimary()
{
switch(CurTok) {
default:
return Error("Expected an expression but got an unknown token.");
case tok_ident:
return ParseIdentifierExpr();
case tok_number:
return ParseNumberExpr();
case '(':
return ParseParenExpr();
}
}
/* primary
* ::= identifierexpr
* ::= numberexpr
* ::= parenexpr
* ::= const string
* */
static shared_ptr<ExprAST> ParsePrimary() {
switch (CurTok) {
case T_BRACE_SL:
return ParseParenExpr();
case T_IDENTIFIER:
return ParseIdentifierExpr();
case T_NUMBER:
return ParseNumberExpr();
case T_DQUOTE:
return ParseConststringExpr();
case T_SQUOTE:
return ParseConststringExpr();
default:
return Error("unknown token when expected an expression ");
}
}
/// primary
/// ::= identifierexpr
/// ::= numberexpr
/// ::= parenexpr
std::unique_ptr<ExprAST> UDFParser::ParsePrimary() {
switch (cur_tok_) {
default:
return LogError("unknown token when expecting an expression");
case tok_identifier:
return ParseIdentifierExpr();
case tok_number:
return ParseNumberExpr();
case '(':
return ParseParenExpr();
case tok_return:
return ParseReturn();
case tok_if:
return ParseIfExpr();
case tok_semicolon:
return nullptr;
}
}
