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author | David Greene <greened@obbligato.org> | 2009-06-08 23:05:37 +0000 |
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committer | David Greene <greened@obbligato.org> | 2009-06-08 23:05:37 +0000 |
commit | 0d973999f3a7973e680e12acdf6def9d769911b6 (patch) | |
tree | d26340225fa5c4ca70833825a305da557017db5e /utils/TableGen | |
parent | 2e7ccfce98b925d07788fdd08cccc9ddb3d7004b (diff) | |
download | external_llvm-0d973999f3a7973e680e12acdf6def9d769911b6.zip external_llvm-0d973999f3a7973e680e12acdf6def9d769911b6.tar.gz external_llvm-0d973999f3a7973e680e12acdf6def9d769911b6.tar.bz2 |
Add a !patsubst operator. Use on string types.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@73099 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'utils/TableGen')
-rw-r--r-- | utils/TableGen/CodeGenDAGPatterns.cpp | 2 | ||||
-rw-r--r-- | utils/TableGen/Record.cpp | 65 | ||||
-rw-r--r-- | utils/TableGen/Record.h | 2 | ||||
-rw-r--r-- | utils/TableGen/TGLexer.cpp | 1 | ||||
-rw-r--r-- | utils/TableGen/TGLexer.h | 2 | ||||
-rw-r--r-- | utils/TableGen/TGParser.cpp | 9 |
6 files changed, 78 insertions, 3 deletions
diff --git a/utils/TableGen/CodeGenDAGPatterns.cpp b/utils/TableGen/CodeGenDAGPatterns.cpp index 05bbc0a..e668468 100644 --- a/utils/TableGen/CodeGenDAGPatterns.cpp +++ b/utils/TableGen/CodeGenDAGPatterns.cpp @@ -2025,7 +2025,7 @@ void CodeGenDAGPatterns::ParsePatterns() { } } else { - ListTy - TArg->getType(); + ListTy = TArg->getType(); } } ListInit *LI = new ListInit(Values, new ListRecTy(ListTy)); diff --git a/utils/TableGen/Record.cpp b/utils/TableGen/Record.cpp index fa10799..2f500ae 100644 --- a/utils/TableGen/Record.cpp +++ b/utils/TableGen/Record.cpp @@ -18,6 +18,7 @@ #include <ios> #include <sys/types.h> #include <regex.h> +#include <sstream> using namespace llvm; @@ -1034,6 +1035,69 @@ Init *TernOpInit::Fold(Record *CurRec, MultiClass *CurMultiClass) { } break; } + + case PATSUBST: { + StringInit *LHSs = dynamic_cast<StringInit*>(LHS); + StringInit *MHSs = dynamic_cast<StringInit*>(MHS); + StringInit *RHSs = dynamic_cast<StringInit*>(RHS); + + if (LHSs && MHSs && RHSs) { + regex_t compiled; + int err = regcomp (&compiled, LHSs->getValue().c_str(), REG_EXTENDED); + if (err != 0) { + size_t length = regerror (err, &compiled, NULL, 0); + char *buffer = new char[length]; + (void) regerror (err, &compiled, buffer, length); + std::string errmsg = buffer; + delete[] buffer; + regfree(&compiled); + throw errmsg; + } + regmatch_t matches[10]; + int result = regexec(&compiled, RHSs->getValue().c_str(), 10, matches, 0); + if (result == REG_ESPACE) { + size_t length = regerror (err, &compiled, NULL, 0); + char *buffer = new char[length]; + (void) regerror (err, &compiled, buffer, length); + std::string errmsg = buffer; + delete[] buffer; + regfree(&compiled); + throw errmsg; + } + regfree(&compiled); + if (result == 0) { + // Parse the substitution string looking for $1, $2, etc. and + // substitute strings. If there are no $1, etc. just replace + // the whole string. + std::string replacement = MHSs->getValue(); + size_t pos = replacement.find("$"); + while (pos != std::string::npos && pos+1 < replacement.size()) { + if (std::isdigit(replacement[pos+1])) { + std::string sidx(&replacement[pos+1], 1); + std::istringstream str(sidx); + int idx; + if (str >> idx) { + replacement.replace(pos, 2, RHSs->getValue(), matches[idx].rm_so, + matches[idx].rm_eo - matches[idx].rm_so); + } + else { + throw "unexpected failure in patsubst index calculation"; + } + } + else if (replacement[pos+1] == '$') { + replacement.replace(pos, 2, "$"); + } + pos = replacement.find("$", pos+1); + } + return new StringInit(replacement); + } + else { + // No match, just pass the string through + return RHSs; + } + } + break; + } } return this; @@ -1069,6 +1133,7 @@ std::string TernOpInit::getAsString() const { std::string Result; switch (Opc) { case SUBST: Result = "!subst"; break; + case PATSUBST: Result = "!patsubst"; break; case FOREACH: Result = "!foreach"; break; case IF: Result = "!if"; break; } diff --git a/utils/TableGen/Record.h b/utils/TableGen/Record.h index 8ef833d..d8e4fb3 100644 --- a/utils/TableGen/Record.h +++ b/utils/TableGen/Record.h @@ -885,7 +885,7 @@ public: /// class TernOpInit : public OpInit { public: - enum TernaryOp { SUBST, FOREACH, IF }; + enum TernaryOp { SUBST, FOREACH, IF, PATSUBST }; private: TernaryOp Opc; Init *LHS, *MHS, *RHS; diff --git a/utils/TableGen/TGLexer.cpp b/utils/TableGen/TGLexer.cpp index 378bffb..930d9db 100644 --- a/utils/TableGen/TGLexer.cpp +++ b/utils/TableGen/TGLexer.cpp @@ -449,6 +449,7 @@ tgtok::TokKind TGLexer::LexExclaim() { if (Len == 10 && !memcmp(Start, "nameconcat", 10)) return tgtok::XNameConcat; if (Len == 8 && !memcmp(Start, "regmatch", 8)) return tgtok::XRegMatch; if (Len == 5 && !memcmp(Start, "subst", 5)) return tgtok::XSubst; + if (Len == 8 && !memcmp(Start, "patsubst", 8)) return tgtok::XPatSubst; if (Len == 7 && !memcmp(Start, "foreach", 7)) return tgtok::XForEach; if (Len == 4 && !memcmp(Start, "cast", 4)) return tgtok::XCast; if (Len == 3 && !memcmp(Start, "car", 3)) return tgtok::XCar; diff --git a/utils/TableGen/TGLexer.h b/utils/TableGen/TGLexer.h index 06f6535..fef10f0 100644 --- a/utils/TableGen/TGLexer.h +++ b/utils/TableGen/TGLexer.h @@ -46,7 +46,7 @@ namespace tgtok { // !keywords. XConcat, XSRA, XSRL, XSHL, XStrConcat, XNameConcat, XCast, XSubst, - XForEach, XCar, XCdr, XNull, XIf, XRegMatch, + XForEach, XCar, XCdr, XNull, XIf, XRegMatch, XPatSubst, // Integer value. IntVal, diff --git a/utils/TableGen/TGParser.cpp b/utils/TableGen/TGParser.cpp index 7d3d1b3..d2bc6b8 100644 --- a/utils/TableGen/TGParser.cpp +++ b/utils/TableGen/TGParser.cpp @@ -878,6 +878,7 @@ Init *TGParser::ParseOperation(Record *CurRec) { case tgtok::XIf: case tgtok::XForEach: + case tgtok::XPatSubst: case tgtok::XSubst: { // Value ::= !ternop '(' Value ',' Value ',' Value ')' TernOpInit::TernaryOp Code; RecTy *Type = 0; @@ -896,6 +897,9 @@ Init *TGParser::ParseOperation(Record *CurRec) { case tgtok::XSubst: Code = TernOpInit::SUBST; break; + case tgtok::XPatSubst: + Code = TernOpInit::PATSUBST; + break; } if (Lex.getCode() != tgtok::l_paren) { TokError("expected '(' after ternary operator"); @@ -969,6 +973,10 @@ Init *TGParser::ParseOperation(Record *CurRec) { Type = RHSt->getType(); break; } + case tgtok::XPatSubst: { + Type = new StringRecTy; + break; + } } return (new TernOpInit(Code, LHS, MHS, RHS, Type))->Fold(CurRec, CurMultiClass); } @@ -1277,6 +1285,7 @@ Init *TGParser::ParseSimpleValue(Record *CurRec, RecTy *ItemType) { case tgtok::XNameConcat: // Value ::= !binop '(' Value ',' Value ')' case tgtok::XIf: case tgtok::XForEach: + case tgtok::XPatSubst: case tgtok::XSubst: { // Value ::= !ternop '(' Value ',' Value ',' Value ')' return ParseOperation(CurRec); break; |