diff options
Diffstat (limited to 'frontends/verilog/preproc.cc')
| -rw-r--r-- | frontends/verilog/preproc.cc | 65 |
1 files changed, 42 insertions, 23 deletions
diff --git a/frontends/verilog/preproc.cc b/frontends/verilog/preproc.cc index db53e8c68..f83433219 100644 --- a/frontends/verilog/preproc.cc +++ b/frontends/verilog/preproc.cc @@ -37,7 +37,8 @@ #include <stdarg.h> #include <stdio.h> #include <string.h> -#include <assert.h> + +YOSYS_NAMESPACE_BEGIN static std::list<std::string> output_code; static std::list<std::string> input_buffer; @@ -65,7 +66,7 @@ static char next_char() if (input_buffer.empty()) return 0; - assert(input_buffer_charp <= input_buffer.front().size()); + log_assert(input_buffer_charp <= input_buffer.front().size()); if (input_buffer_charp == input_buffer.front().size()) { input_buffer_charp = 0; input_buffer.pop_front(); @@ -130,6 +131,12 @@ static std::string next_token(bool pass_newline = false) token += ch; } } + if (token == "\"\"" && (ch = next_char()) != 0) { + if (ch == '"') + token += ch; + else + return_char(ch); + } } else if (ch == '/') { @@ -186,7 +193,7 @@ static std::string next_token(bool pass_newline = false) return token; } -static void input_file(FILE *f, std::string filename) +static void input_file(std::istream &f, std::string filename) { char buffer[513]; int rc; @@ -195,14 +202,14 @@ static void input_file(FILE *f, std::string filename) auto it = input_buffer.begin(); input_buffer.insert(it, "`file_push " + filename + "\n"); - while ((rc = fread(buffer, 1, sizeof(buffer)-1, f)) > 0) { + while ((rc = f.readsome(buffer, sizeof(buffer)-1)) > 0) { buffer[rc] = 0; input_buffer.insert(it, buffer); } - input_buffer.insert(it, "`file_pop\n"); + input_buffer.insert(it, "\n`file_pop\n"); } -std::string frontend_verilog_preproc(FILE *f, std::string filename, const std::map<std::string, std::string> pre_defines_map, const std::list<std::string> include_dirs) +std::string frontend_verilog_preproc(std::istream &f, std::string filename, const std::map<std::string, std::string> pre_defines_map, const std::list<std::string> include_dirs) { std::set<std::string> defines_with_args; std::map<std::string, std::string> defines_map(pre_defines_map); @@ -281,27 +288,28 @@ std::string frontend_verilog_preproc(FILE *f, std::string filename, const std::m else fn = fn.substr(0, pos) + fn.substr(pos+1); } - FILE *fp = fopen(fn.c_str(), "r"); - if (fp == NULL && fn.size() > 0 && fn[0] != '/' && filename.find('/') != std::string::npos) { + std::ifstream ff; + ff.clear(); + ff.open(fn.c_str()); + if (ff.fail() && fn.size() > 0 && fn[0] != '/' && filename.find('/') != std::string::npos) { // if the include file was not found, it is not given with an absolute path, and the // currently read file is given with a path, then try again relative to its directory - std::string fn2 = filename.substr(0, filename.rfind('/')+1) + fn; - fp = fopen(fn2.c_str(), "r"); + ff.clear(); + ff.open(filename.substr(0, filename.rfind('/')+1) + fn); } - if (fp == NULL && fn.size() > 0 && fn[0] != '/') { + if (ff.fail() && fn.size() > 0 && fn[0] != '/') { // if the include file was not found and it is not given with an absolute path, then // search it in the include path for (auto incdir : include_dirs) { - std::string fn2 = incdir + '/' + fn; - fp = fopen(fn2.c_str(), "r"); - if (fp != NULL) break; + ff.clear(); + ff.open(incdir + '/' + fn); + if (!ff.fail()) break; } } - if (fp != NULL) { - input_file(fp, fn); - fclose(fp); - } else - output_code.push_back("`file_notfound " + fn + "\n"); + if (ff.fail()) + output_code.push_back("`file_notfound " + fn); + else + input_file(ff, fn); continue; } @@ -310,12 +318,17 @@ std::string frontend_verilog_preproc(FILE *f, std::string filename, const std::m std::map<std::string, int> args; skip_spaces(); name = next_token(true); + bool here_doc_mode = false; int newline_count = 0; int state = 0; if (skip_spaces() != "") state = 3; while (!tok.empty()) { tok = next_token(); + if (tok == "\"\"\"") { + here_doc_mode = !here_doc_mode; + continue; + } if (state == 0 && tok == "(") { state = 1; skip_spaces(); @@ -332,9 +345,14 @@ std::string frontend_verilog_preproc(FILE *f, std::string filename, const std::m if (state != 2) state = 3; if (tok == "\n") { - return_char('\n'); - break; - } + if (here_doc_mode) { + value += " "; + newline_count++; + } else { + return_char('\n'); + break; + } + } else if (tok == "\\") { char ch = next_char(); if (ch == '\n') { @@ -373,7 +391,6 @@ std::string frontend_verilog_preproc(FILE *f, std::string filename, const std::m } if (tok == "`timescale") { - std::string name; skip_spaces(); while (!tok.empty() && tok != "\n") tok = next_token(true); @@ -429,3 +446,5 @@ std::string frontend_verilog_preproc(FILE *f, std::string filename, const std::m return output; } +YOSYS_NAMESPACE_END + |