C++ (Cpp) parse_ast Examples

Example #1

File: ext.c Project: sebrose/bool

static VALUE Bool_parse(VALUE klass, VALUE r_expr) {
    Node* ast;
    char* expr;

    if(NIL_P(klass)) {
        rb_raise(rb_eRuntimeError, "Bool klass was nil");
    }

    // TODO: Verify that r_expr is a String
    expr = RSTRING_PTR(r_expr);
    ast = parse_ast(expr);
    if(ast != NULL) {
        VALUE result = transform(ast);
        free_ast(ast);
        return result;
    } else {
        rb_raise(rb_eParseError, "%s", last_error_msg);
    }
}

Example #2

File: parser.cpp Project: helgefmi/Toy

AST *ParserContext::parse_block() {
    AST *ret = 0;

    if (curtok()->type() == tok_block_start) {
        eat_token(tok_block_start);
        if (curtok()->type() == tok_block_end) {
            ret = new AST(std::vector<const Statement*>());
        } else {
            ret = parse_ast(true);
        }
        eat_token(tok_block_end);
    } else {
        std::vector<const Statement*> statements;
        statements.push_back(parse_statement());
        ret = new AST(statements);
    }

    return ret;
}