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Added support for here documents

This commit is contained in:
Clifford Wolf 2014-07-26 17:21:40 +02:00
parent 3f4e3ca8ad
commit 267c615640
3 changed files with 63 additions and 18 deletions
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44
kernel/driver.cc
View File

@ -28,6 +28,7 @@
#include <errno.h>
#include <algorithm>
#include <exception>
#include "kernel/rtlil.h"
#include "kernel/register.h"
@ -116,25 +117,36 @@ static void run_frontend(std::string filename, std::string command, RTLIL::Desig
if (f == NULL)
log_error("Can't open script file `%s' for reading: %s\n", filename.c_str(), strerror(errno));
std::string command;
while (fgetline(f, command)) {
while (!command.empty() && command[command.size()-1] == '\\') {
std::string next_line;
if (!fgetline(f, next_line))
break;
command.resize(command.size()-1);
command += next_line;
FILE *backup_script_file = Frontend::current_script_file;
Frontend::current_script_file = f;
try {
std::string command;
while (fgetline(f, command)) {
while (!command.empty() && command[command.size()-1] == '\\') {
std::string next_line;
if (!fgetline(f, next_line))
break;
command.resize(command.size()-1);
command += next_line;
}
handle_label(command, from_to_active, run_from, run_to);
if (from_to_active)
Pass::call(design, command);
}
handle_label(command, from_to_active, run_from, run_to);
if (from_to_active)
Pass::call(design, command);
if (!command.empty()) {
handle_label(command, from_to_active, run_from, run_to);
if (from_to_active)
Pass::call(design, command);
}
}
catch (...) {
Frontend::current_script_file = backup_script_file;
std::rethrow_exception(std::current_exception());
}
if (!command.empty()) {
handle_label(command, from_to_active, run_from, run_to);
if (from_to_active)
Pass::call(design, command);
}
Frontend::current_script_file = backup_script_file;
if (filename != "-")
fclose(f);

31
kernel/register.cc
View File

@ -276,6 +276,9 @@ void Frontend::execute(std::vector<std::string> args, RTLIL::Design *design)
} while (!args.empty());
}
FILE *Frontend::current_script_file = NULL;
std::string Frontend::last_here_document;
void Frontend::extra_args(FILE *&f, std::string &filename, std::vector<std::string> args, size_t argidx)
{
bool called_with_fp = f != NULL;
@ -291,7 +294,33 @@ void Frontend::extra_args(FILE *&f, std::string &filename, std::vector<std::stri
cmd_error(args, argidx, "Extra filename argument in direct file mode.");
filename = arg;
f = fopen(filename.c_str(), "r");
if (filename == "<<" && argidx+1 < args.size())
filename += args[++argidx];
if (filename.substr(0, 2) == "<<") {
if (Frontend::current_script_file == NULL)
log_error("Unexpected here document '%s' outside of script!\n", filename.c_str());
if (filename.size() <= 2)
log_error("Missing EOT marker in here document!\n");
std::string eot_marker = filename.substr(2);
last_here_document.clear();
while (1) {
std::string buffer;
char block[4096];
while (1) {
if (fgets(block, 4096, Frontend::current_script_file) == NULL)
log_error("Unexpected end of file in here document '%s'!\n", filename.c_str());
buffer += block;
if (buffer.size() > 0 && (buffer[buffer.size() - 1] == '\n' || buffer[buffer.size() - 1] == '\r'))
break;
}
int indent = buffer.find_first_not_of(" \t\r\n");
if (buffer.substr(indent, eot_marker.size()) == eot_marker)
break;
last_here_document += buffer;
}
f = fmemopen((void*)last_here_document.c_str(), last_here_document.size(), "r");
} else
f = fopen(filename.c_str(), "r");
if (f == NULL)
log_cmd_error("Can't open input file `%s' for reading: %s\n", filename.c_str(), strerror(errno));

6
kernel/register.h
View File

@ -38,7 +38,7 @@ extern const char *yosys_version_str;
extern RTLIL::Design *yosys_get_design();
extern std::string proc_self_dirname();
extern std::string proc_share_dirname();
const char *create_prompt(RTLIL::Design *design, int recursion_counter);
extern const char *create_prompt(RTLIL::Design *design, int recursion_counter);
// from passes/cmds/design.cc
extern std::map<std::string, RTLIL::Design*> saved_designs;
@ -76,6 +76,10 @@ struct Pass
struct Frontend : Pass
{
// for reading of here documents
static FILE *current_script_file;
static std::string last_here_document;
std::string frontend_name;
Frontend(std::string name, std::string short_help = "** document me **");
virtual void run_register();