internal/pkgbits: extract unified IR coding-level logic

This logic is needed for the go/types unified IR importer, so extract
it into a separate internal package so we can reuse a single copy.

Change-Id: I5f734b76e580fdb69ee39e45ac553c22d01c5909
Reviewed-on: https://go-review.googlesource.com/c/go/+/386000
Run-TryBot: Matthew Dempsky <mdempsky@google.com>
Reviewed-by: Cuong Manh Le <cuong.manhle.vn@gmail.com>
TryBot-Result: Gopher Robot <gobot@golang.org>
Trust: Matthew Dempsky <mdempsky@google.com>

1 files changed, 87 insertions, 0 deletions

diff --git a/src/internal/pkgbits/syncmarker_string.go b/src/internal/pkgbits/syncmarker_string.go
new file mode 100644
index 0000000000..91154a001d
--- /dev/null
+++ b/src/internal/pkgbits/syncmarker_string.go
@@ -0,0 +1,87 @@
+// Code generated by "stringer -type=SyncMarker -trimprefix=Sync"; DO NOT EDIT.
+
+package pkgbits
+
+import "strconv"
+
+func _() {
+	// An "invalid array index" compiler error signifies that the constant values have changed.
+	// Re-run the stringer command to generate them again.
+	var x [1]struct{}
+	_ = x[SyncEOF-1]
+	_ = x[SyncBool-2]
+	_ = x[SyncInt64-3]
+	_ = x[SyncUint64-4]
+	_ = x[SyncString-5]
+	_ = x[SyncValue-6]
+	_ = x[SyncVal-7]
+	_ = x[SyncRelocs-8]
+	_ = x[SyncReloc-9]
+	_ = x[SyncUseReloc-10]
+	_ = x[SyncPublic-11]
+	_ = x[SyncPos-12]
+	_ = x[SyncPosBase-13]
+	_ = x[SyncObject-14]
+	_ = x[SyncObject1-15]
+	_ = x[SyncPkg-16]
+	_ = x[SyncPkgDef-17]
+	_ = x[SyncMethod-18]
+	_ = x[SyncType-19]
+	_ = x[SyncTypeIdx-20]
+	_ = x[SyncTypeParamNames-21]
+	_ = x[SyncSignature-22]
+	_ = x[SyncParams-23]
+	_ = x[SyncParam-24]
+	_ = x[SyncCodeObj-25]
+	_ = x[SyncSym-26]
+	_ = x[SyncLocalIdent-27]
+	_ = x[SyncSelector-28]
+	_ = x[SyncPrivate-29]
+	_ = x[SyncFuncExt-30]
+	_ = x[SyncVarExt-31]
+	_ = x[SyncTypeExt-32]
+	_ = x[SyncPragma-33]
+	_ = x[SyncExprList-34]
+	_ = x[SyncExprs-35]
+	_ = x[SyncExpr-36]
+	_ = x[SyncOp-37]
+	_ = x[SyncFuncLit-38]
+	_ = x[SyncCompLit-39]
+	_ = x[SyncDecl-40]
+	_ = x[SyncFuncBody-41]
+	_ = x[SyncOpenScope-42]
+	_ = x[SyncCloseScope-43]
+	_ = x[SyncCloseAnotherScope-44]
+	_ = x[SyncDeclNames-45]
+	_ = x[SyncDeclName-46]
+	_ = x[SyncStmts-47]
+	_ = x[SyncBlockStmt-48]
+	_ = x[SyncIfStmt-49]
+	_ = x[SyncForStmt-50]
+	_ = x[SyncSwitchStmt-51]
+	_ = x[SyncRangeStmt-52]
+	_ = x[SyncCaseClause-53]
+	_ = x[SyncCommClause-54]
+	_ = x[SyncSelectStmt-55]
+	_ = x[SyncDecls-56]
+	_ = x[SyncLabeledStmt-57]
+	_ = x[SyncUseObjLocal-58]
+	_ = x[SyncAddLocal-59]
+	_ = x[SyncLinkname-60]
+	_ = x[SyncStmt1-61]
+	_ = x[SyncStmtsEnd-62]
+	_ = x[SyncLabel-63]
+	_ = x[SyncOptLabel-64]
+}
+
+const _SyncMarker_name = "EOFBoolInt64Uint64StringValueValRelocsRelocUseRelocPublicPosPosBaseObjectObject1PkgPkgDefMethodTypeTypeIdxTypeParamNamesSignatureParamsParamCodeObjSymLocalIdentSelectorPrivateFuncExtVarExtTypeExtPragmaExprListExprsExprOpFuncLitCompLitDeclFuncBodyOpenScopeCloseScopeCloseAnotherScopeDeclNamesDeclNameStmtsBlockStmtIfStmtForStmtSwitchStmtRangeStmtCaseClauseCommClauseSelectStmtDeclsLabeledStmtUseObjLocalAddLocalLinknameStmt1StmtsEndLabelOptLabel"
+
+var _SyncMarker_index = [...]uint16{0, 3, 7, 12, 18, 24, 29, 32, 38, 43, 51, 57, 60, 67, 73, 80, 83, 89, 95, 99, 106, 120, 129, 135, 140, 147, 150, 160, 168, 175, 182, 188, 195, 201, 209, 214, 218, 220, 227, 234, 238, 246, 255, 265, 282, 291, 299, 304, 313, 319, 326, 336, 345, 355, 365, 375, 380, 391, 402, 410, 418, 423, 431, 436, 444}
+
+func (i SyncMarker) String() string {
+	i -= 1
+	if i < 0 || i >= SyncMarker(len(_SyncMarker_index)-1) {
+		return "SyncMarker(" + strconv.FormatInt(int64(i+1), 10) + ")"
+	}
+	return _SyncMarker_name[_SyncMarker_index[i]:_SyncMarker_index[i+1]]
+}