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Rez: string literal concatenation, hex strings

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This commit is contained in:
Wolfgang Thaller 2014-10-09 21:41:41 +02:00
parent 2b5c415db3
commit 2b64cb707d
2 changed files with 42 additions and 3 deletions
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2
Rez/RezLexerNextToken.cc
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@ -198,7 +198,7 @@ RezSymbol RezLexer::nextToken()
KEYWORD(BITSTRING, "bitstring"),
KEYWORD(INTEGER, "int"),
KEYWORD(DOLLAR, "$")
};
std::string s = tok.get_value().c_str();

43
Rez/RezParser.yy
View File

@ -39,7 +39,7 @@
%token OR "|";
%token XOR "^";
%token COMPL "~";
%token DOLLAR "$";
%token TYPE "type";
%token RESOURCE "resource";
@ -119,6 +119,37 @@
{
std::cerr << loc << ": " << err << std::endl;
}
static std::string fromHex(std::string hex)
{
std::string bin;
int nibble;
bool haveNibble = false;
for(std::string::iterator p = hex.begin(); p != hex.end(); ++p)
{
if(std::isspace(*p))
continue;
assert(isdigit(*p) || (tolower(*p) >= 'a' && tolower(*p) <= 'f'));
int digit;
if(isdigit(*p))
digit = *p - '0';
else
digit = tolower(*p) - 'a' + 0xA;
if(haveNibble)
{
bin += (char) ((nibble << 4) | digit);
haveNibble = false;
}
else
{
nibble = digit;
haveNibble = true;
}
}
return bin;
}
}
%%
@ -278,9 +309,17 @@ switch_case : "case" IDENTIFIER ":"
}
;
%type <std::string> string onestring;
string : onestring { $$ = $1; }
| string onestring { $$ = $1 + $2; }
;
onestring : STRINGLIT { $$ = $1; }
| DOLLAR STRINGLIT { $$ = fromHex($2); }
;
value : expression { $$ = $1; }
| "{" resource_body "}" { $$ = $2; }
| STRINGLIT { $$ = std::make_shared<StringExpr>($1); }
| string { $$ = std::make_shared<StringExpr>($1); }
;
expression : expression1 { $$ = $1; }