Report error reason on same line as syntax error.

Signed-off-by: litghost <537074+litghost@users.noreply.github.com>

diff --git a/frontends/blif/blifparse.cc b/frontends/blif/blifparse.cc
index 1d4cf39a80092b2407487d2e87043c45309f38ef..b81808b1e56c036a40a27b343f4acc1df9e3bf5a 100644 (file)
--- a/frontends/blif/blifparse.cc
+++ b/frontends/blif/blifparse.cc
@@ -85,6 +85,7 @@ void parse_blif(RTLIL::Design *design, std::istream &f, std::string dff_name, bo
        RTLIL::Cell *sopcell = NULL;
        RTLIL::Cell *lastcell = nullptr;
        RTLIL::State lut_default_state = RTLIL::State::Sx;
+       char err_reason[80];
        int blif_maxnum = 0, sopmode = -1;
 
        auto blif_wire = [&](const std::string &wire_name) -> Wire*
@@ -275,8 +276,8 @@ void parse_blif(RTLIL::Design *design, std::istream &f, std::string dff_name, bo
 
                                if(lastcell == nullptr || module == nullptr)
                                {
-                                       log_warning("No primative object to attach .cname %s.\n", p);
-                                       goto error;
+                                       snprintf(err_reason, sizeof(err_reason), "No primative object to attach .cname %s.", p);
+                                       goto error_with_reason;
                                }
 
                                module->rename(lastcell, p);
@@ -301,14 +302,14 @@ void parse_blif(RTLIL::Design *design, std::istream &f, std::string dff_name, bo
                                }
                                if (!strcmp(cmd, ".attr")) {
                                        if (obj_attributes == nullptr) {
-                                               log_warning("No object to attach .attr too.\n");
-                                               goto error;
+                                               snprintf(err_reason, sizeof(err_reason), "No object to attach .attr too.");
+                                               goto error_with_reason;
                                        }
                                        (*obj_attributes)[id_n] = const_v;
                                } else {
                                        if (obj_parameters == nullptr) {
-                                               log_warning("No object to attach .param too.\n");
-                                               goto error;
+                                               snprintf(err_reason, sizeof(err_reason), "No object to attach .param too.");
+                                               goto error_with_reason;
                                        }
                                        (*obj_parameters)[id_n] = const_v;
                                }
@@ -573,6 +574,8 @@ void parse_blif(RTLIL::Design *design, std::istream &f, std::string dff_name, bo
 
 error:
        log_error("Syntax error in line %d!\n", line_count);
+error_with_reason:
+       log_error("Syntax error in line %d: %s\n", line_count, err_reason);
 }
 
 struct BlifFrontend : public Frontend {