Parser finished?

* Implemented basic parser functionality
* Tested with GDSII file
* Ready to write render output
This commit is contained in:
Mario Hüttel 2018-05-08 11:59:32 +02:00
parent 1a46313d1b
commit 3cfdc86ef8
3 changed files with 138 additions and 11 deletions

View File

@ -10,4 +10,4 @@ link_directories(${GLIB_LINK_DIRS})
project(gds-render)
add_executable(${PROJECT_NAME} "main.c" "gdsparse.c")
target_link_libraries(${PROJECT_NAME} ${GLIB_LDFLAGS})
target_link_libraries(${PROJECT_NAME} ${GLIB_LDFLAGS} m)

View File

@ -2,6 +2,8 @@
#include <stdlib.h>
#include <stdio.h>
#include <string.h>
#include <stdbool.h>
#include <math.h>
#define GDS_ERROR(fmt, ...) printf("[PARSE_ERROR] " fmt "\n",## __VA_ARGS__)
#define GDS_WARN(fmt, ...) printf("[PARSE_WARNING] " fmt "\n",## __VA_ARGS__)
@ -29,7 +31,8 @@ enum record {
LAYER = 0x0D02,
};
static int name_cell_ref(struct gds_cell_instance *cell_inst, unsigned int bytes, char* data) {
static int name_cell_ref(struct gds_cell_instance *cell_inst, unsigned int bytes, char* data)
{
int len;
if (cell_inst == NULL)
@ -50,6 +53,46 @@ static int name_cell_ref(struct gds_cell_instance *cell_inst, unsigned int bytes
}
static double gds_convert_double(char *data)
{
bool sign_bit;
int i;
double ret_val;
char current_byte;
int bit = 0;
int exponent;
sign_bit = ((data[0] & 0x80) ? true : false);
/* Check for real 0 */
for (i = 0; i < 8; i++) {
if (data[i] != 0)
break;
if (i == 7) {
/* 7 bytes all 0 */
return 0.0;
}
}
/* Value is other than 0 */
ret_val = 0.0;
for (i = 8; i < 64; i++) {
current_byte = data[i/8];
bit = i % 8;
/* isolate bit */
if ((current_byte & (0x80 >> bit)))
ret_val += pow(2, ((double)(-i+7)));
}
/* Parse exponent and sign bit */
exponent = (int)(data[0] & 0x7F);
exponent -= 64;
ret_val *= pow(16, exponent) * (sign_bit == true ? -1 : 1);
return ret_val;
}
static signed int gds_convert_signed_int(char *data)
{
if (!data) {
@ -82,6 +125,7 @@ static GList * append_library(GList *curr_list)
lib->cells = NULL;
lib->name[0] = 0;
lib->unit_to_meters = 1; // Default. Will be overwritten
lib->cell_names = NULL;
} else
return NULL;
return g_list_append(curr_list, lib);
@ -170,7 +214,7 @@ static int name_library(struct gds_library *current_library, unsigned int bytes,
}
static int name_cell(struct gds_cell *cell, unsigned int bytes, char* data) {
static int name_cell(struct gds_cell *cell, unsigned int bytes, char* data, struct gds_library* lib) {
int len;
if (cell == NULL)
@ -186,12 +230,64 @@ static int name_cell(struct gds_cell *cell, unsigned int bytes, char* data) {
} else {
strcpy(cell->name, data);
printf("Named cell: %s\n", cell->name);
/* Append cell name to lib's list of names */
lib->cell_names = g_list_append(lib->cell_names, cell->name);
}
return 0;
}
void parse_reference_list(gpointer gcell_ref, gpointer glibrary)
{
struct gds_cell_instance *inst = (struct gds_cell_instance *)gcell_ref;
struct gds_library *lib = (struct gds_library *)glibrary;
GList *cell_item;
struct gds_cell *cell;
printf("\t\t\tReference: %s: ", inst->ref_name);
/* Find cell */
for (cell_item = lib->cells; cell_item != NULL; cell_item = cell_item->next) {
cell = (struct gds_cell *)cell_item->data;
/* Check if cell is found */
if (!strcmp(cell->name, inst->ref_name)) {
printf("found\n");
/* update reference link */
inst->cell_ref = cell;
return;
}
}
printf("MISSING!\n");
GDS_WARN("referenced cell could not be found in library");
}
void scan_cell_reference_dependencies(gpointer gcell, gpointer library)
{
struct gds_cell *cell = (struct gds_cell *)gcell;
printf("\tScanning cell: %s\n", cell->name);
/* Scan all library references */
g_list_foreach(cell->child_cells, parse_reference_list, library);
}
void scan_library_references(gpointer library_list_item, gpointer user)
{
struct gds_library *lib = (struct gds_library *)library_list_item;
printf("Scanning Library: %s\n", lib->name);
g_list_foreach(lib->cells, scan_cell_reference_dependencies, lib);
}
int parse_gds_from_file(const char *filename, GList **library_list)
{
char workbuff[1024];
@ -208,6 +304,9 @@ int parse_gds_from_file(const char *filename, GList **library_list)
struct gds_cell_instance *current_s_reference = NULL;
////////////
GList *lib_list;
GList *lib_ptr;
GList *cell_ptr;
GList *cell_ref_ptr;
lib_list = *library_list;
@ -390,10 +489,10 @@ int parse_gds_from_file(const char *filename, GList **library_list)
break;
case MAG:
GDS_WARN("Magnification not yet supported");
break;
case ANGLE:
break;
case STRANS:
break;
default:
//GDS_WARN("Record: %04x, len: %u", (unsigned int)rec_type, (unsigned int)rec_data_length);
@ -419,7 +518,7 @@ int parse_gds_from_file(const char *filename, GList **library_list)
name_library(current_lib, read, workbuff);
break;
case STRNAME:
name_cell(current_cell, read, workbuff);
name_cell(current_cell, read, workbuff, current_lib);
break;
case XY:
if (current_s_reference) {
@ -449,15 +548,43 @@ int parse_gds_from_file(const char *filename, GList **library_list)
break;
case LAYER:
if (!current_graphics) {
GDS_WARN("Layer has to be defined inside graphics object. Probably unknown object.");
GDS_WARN("Layer has to be defined inside graphics object. Probably unknown object. Implement it yourself!");
break;
}
current_graphics->layer = gds_convert_signed_int16(workbuff);
printf("\tAdded layer %d\n", (int)current_graphics->layer);
printf("\t\tAdded layer %d\n", (int)current_graphics->layer);
break;
case MAG:
if (rec_data_length != 8) {
GDS_WARN("Magnification is not an 8 byte real. Results may be wrong");
}
if (current_graphics != NULL && current_s_reference != NULL) {
GDS_ERROR("Open Graphics and Cell Reference\n\tMissing ENDEL?");
run = -6;
break;
}
if (current_s_reference != NULL) {
current_s_reference->magnification = gds_convert_double(workbuff);
printf("\t\tMagnification defined: %lf\n", current_s_reference->magnification);
}
break;
case ANGLE:
if (rec_data_length != 8) {
GDS_WARN("Angle is not an 8 byte real. Results may be wrong");
}
if (current_graphics != NULL && current_s_reference != NULL) {
GDS_ERROR("Open Graphics and Cell Reference\n\tMissing ENDEL?");
run = -6;
break;
}
if (current_s_reference != NULL) {
current_s_reference->angle = gds_convert_double(workbuff);
printf("\t\tAngle defined: %lf\n", current_s_reference->angle);
}
break;
}
break;
break; /* PARSING_DAT */
}
}
@ -466,8 +593,7 @@ int parse_gds_from_file(const char *filename, GList **library_list)
/* Iterate and find references to cells */
// TODO
g_list_foreach(lib_list, scan_library_references, NULL);
*library_list = lib_list;
return run;

View File

@ -52,6 +52,7 @@ struct gds_library {
struct gds_time_field time;
double unit_to_meters;
GList *cells;
GList *cell_names;
};