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This commit is contained in:
Niels Moseley 2019-03-25 14:12:04 +01:00
parent 9d9cc8a314
commit 1f7f54e68e
1 changed files with 78 additions and 78 deletions
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156
passes/techmap/libparse.cc
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@ -87,12 +87,12 @@ int LibertyParser::lexer(std::string &str)
{ {
int c; int c;
// eat whitespace // eat whitespace
do { do {
c = f.get(); c = f.get();
} while (c == ' ' || c == '\t' || c == '\r'); } while (c == ' ' || c == '\t' || c == '\r');
// search for identifiers, numbers, plus or minus. // search for identifiers, numbers, plus or minus.
if (('a' <= c && c <= 'z') || ('A' <= c && c <= 'Z') || ('0' <= c && c <= '9') || c == '_' || c == '-' || c == '+' || c == '.') { if (('a' <= c && c <= 'z') || ('A' <= c && c <= 'Z') || ('0' <= c && c <= '9') || c == '_' || c == '-' || c == '+' || c == '.') {
str = c; str = c;
while (1) { while (1) {
@ -114,8 +114,8 @@ int LibertyParser::lexer(std::string &str)
} }
} }
// if it wasn't an identifer, number of array range, // if it wasn't an identifer, number of array range,
// maybe it's a string? // maybe it's a string?
if (c == '"') { if (c == '"') {
str = ""; str = "";
while (1) { while (1) {
@ -130,7 +130,7 @@ int LibertyParser::lexer(std::string &str)
return 'v'; return 'v';
} }
// if it wasn't a string, perhaps it's a comment or a forward slash? // if it wasn't a string, perhaps it's a comment or a forward slash?
if (c == '/') { if (c == '/') {
c = f.get(); c = f.get();
if (c == '*') { // start of '/*' block comment if (c == '*') { // start of '/*' block comment
@ -153,7 +153,7 @@ int LibertyParser::lexer(std::string &str)
return '/'; // a single '/' charater. return '/'; // a single '/' charater.
} }
// check for a backslash // check for a backslash
if (c == '\\') { if (c == '\\') {
c = f.get(); c = f.get();
if (c == '\r') if (c == '\r')
@ -164,14 +164,14 @@ int LibertyParser::lexer(std::string &str)
return '\\'; return '\\';
} }
// check for a new line // check for a new line
if (c == '\n') { if (c == '\n') {
line++; line++;
return 'n'; return 'n';
} }
// anything else, such as ';' will get passed // anything else, such as ';' will get passed
// through as literal items. // through as literal items.
// if (c >= 32 && c < 255) // if (c >= 32 && c < 255)
// fprintf(stderr, "LEX: char >>%c<<\n", c); // fprintf(stderr, "LEX: char >>%c<<\n", c);
@ -202,8 +202,8 @@ LibertyAst *LibertyParser::parse()
{ {
tok = lexer(str); tok = lexer(str);
// allow both ';' and new lines to // allow both ';' and new lines to
// terminate a statement. // terminate a statement.
if ((tok == ';') || (tok == 'n')) if ((tok == ';') || (tok == 'n'))
break; break;
@ -220,11 +220,11 @@ LibertyAst *LibertyParser::parse()
ast->value += str; ast->value += str;
tok = lexer(str); tok = lexer(str);
} }
// In a liberty file, all key : value pairs should end in ';' // In a liberty file, all key : value pairs should end in ';'
// However, there are some liberty files in the wild that // However, there are some liberty files in the wild that
// just have a newline. We'll be kind and accept a newline // just have a newline. We'll be kind and accept a newline
// instead of the ';' too.. // instead of the ';' too..
if ((tok == ';') || (tok == 'n')) if ((tok == ';') || (tok == 'n'))
break; break;
else else
@ -240,48 +240,48 @@ LibertyAst *LibertyParser::parse()
continue; continue;
if (tok == ')') if (tok == ')')
break; break;
// FIXME: the AST needs to be extended to store // FIXME: the AST needs to be extended to store
// these vector ranges. // these vector ranges.
if (tok == '[') if (tok == '[')
{ {
// parse vector range [A] or [A:B] // parse vector range [A] or [A:B]
std::string arg; std::string arg;
tok = lexer(arg); tok = lexer(arg);
if (tok != 'v') if (tok != 'v')
{ {
// expected a vector array index // expected a vector array index
error("Expected a number."); error("Expected a number.");
} }
else else
{ {
// fixme: check for number A // fixme: check for number A
} }
tok = lexer(arg); tok = lexer(arg);
// optionally check for : in case of [A:B] // optionally check for : in case of [A:B]
// if it isn't we just expect ']' // if it isn't we just expect ']'
// as we have [A] // as we have [A]
if (tok == ':') if (tok == ':')
{ {
tok = lexer(arg); tok = lexer(arg);
if (tok != 'v') if (tok != 'v')
{ {
// expected a vector array index // expected a vector array index
error("Expected a number."); error("Expected a number.");
} }
else else
{ {
// fixme: check for number B // fixme: check for number B
tok = lexer(arg); tok = lexer(arg);
} }
} }
// expect a closing bracket of array range // expect a closing bracket of array range
if (tok != ']') if (tok != ']')
{ {
error("Expected ']' on array range."); error("Expected ']' on array range.");
} }
continue; continue;
} }
if (tok != 'v') if (tok != 'v')
error(); error();
ast->args.push_back(arg); ast->args.push_back(arg);
@ -314,10 +314,10 @@ void LibertyParser::error()
void LibertyParser::error(const std::string &str) void LibertyParser::error(const std::string &str)
{ {
std::stringstream ss; std::stringstream ss;
ss << "Syntax error in liberty file on line " << line << ".\n"; ss << "Syntax error in liberty file on line " << line << ".\n";
ss << " " << str << "\n"; ss << " " << str << "\n";
log_error("%s", ss.str().c_str()); log_error("%s", ss.str().c_str());
} }
#else #else
@ -330,32 +330,32 @@ void LibertyParser::error()
void LibertyParser::error(const std::string &str) void LibertyParser::error(const std::string &str)
{ {
std::stringstream ss; std::stringstream ss;
ss << "Syntax error in liberty file on line " << line << ".\n"; ss << "Syntax error in liberty file on line " << line << ".\n";
ss << " " << str << "\n"; ss << " " << str << "\n";
printf("%s", ss.str().c_str()); printf("%s", ss.str().c_str());
exit(1); exit(1);
} }
/**** BEGIN: http://svn.clifford.at/tools/trunk/examples/check.h ****/ /**** BEGIN: http://svn.clifford.at/tools/trunk/examples/check.h ****/
#define CHECK_NV(result, check) \ #define CHECK_NV(result, check) \
do { \ do { \
auto _R = (result); \ auto _R = (result); \
if (!(_R check)) { \ if (!(_R check)) { \
fprintf(stderr, "Error from '%s' (%ld %s) in %s:%d.\n", \ fprintf(stderr, "Error from '%s' (%ld %s) in %s:%d.\n", \
#result, (long int)_R, #check, __FILE__, __LINE__); \ #result, (long int)_R, #check, __FILE__, __LINE__); \
abort(); \ abort(); \
} \ } \
} while(0) } while(0)
#define CHECK_COND(result) \ #define CHECK_COND(result) \
do { \ do { \
if (!(result)) { \ if (!(result)) { \
fprintf(stderr, "Error from '%s' in %s:%d.\n", \ fprintf(stderr, "Error from '%s' in %s:%d.\n", \
#result, __FILE__, __LINE__); \ #result, __FILE__, __LINE__); \
abort(); \ abort(); \
} \ } \
} while(0) } while(0)
/**** END: http://svn.clifford.at/tools/trunk/examples/check.h ****/ /**** END: http://svn.clifford.at/tools/trunk/examples/check.h ****/