// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.

package language

import "errors"

type scriptRegionFlags uint8

const (
	isList = 1 << iota
	scriptInFrom
	regionInFrom
)

func (t *Tag) setUndefinedLang(id Language) {
	if t.LangID == 0 {
		t.LangID = id
	}
}

func (t *Tag) setUndefinedScript(id Script) {
	if t.ScriptID == 0 {

import (
	"path"
	"sort"
	"strings"

	"cmd/compile/internal/base"
	"cmd/compile/internal/ir"
	"cmd/compile/internal/objw"
	"cmd/compile/internal/types"
	"cmd/internal/obj"
)

const (
	embedUnknown = iota
	embedBytes
	embedString
	embedFiles
)

func embedFileList(v *ir.Name, kind int) []string {
	// Build list of files to store.
	have := make(map[string]bool)
	var list []string
	for _, e := range *v.Embed {

	// the encapsulated content should come from a trusted source,
	// as it will be included verbatim in the template output.
	Srcset string
)

type contentType uint8

const (
	contentTypePlain contentType = iota
	contentTypeCSS
	contentTypeHTML
	contentTypeHTMLAttr
	contentTypeJS
	contentTypeJSStr
	contentTypeURL
	contentTypeSrcset
	// contentTypeUnsafe is used in attr.go for values that affect how

					workqueue = append(workqueue, nodePath[_Node, _Edge]{a, ve})
					visited[a] = true
				}
			}
		}
	}
	return nil, errors.New("no path")
}

type direction int

const (
	north direction = iota
	ne
	east
	se
	south
	sw
	west
	nw
	up
	down
)

func (dir direction) String() string {
	strs := map[direction]string{
		north: "north",
		ne:    "ne",

		off := a.BitFields.ParseSigned(i) << a.Shift
		neg := int64(-1) << (int(a.Shift) + a.BitFields.NumBits())
		return Offset(neg | off)
	}
}

type ArgType int8

const (
	TypeUnknown      ArgType = iota
	TypePCRel                // PC-relative address
	TypeLabel                // absolute address
	TypeReg                  // integer register
	TypeCondRegBit           // conditional register bit (0-31)

// inserted for "pointerness" are not evaluated until the function is
// called, so a T.f or (*T).f expression never panics.
type SelectionKind int

const (
	FieldVal   SelectionKind = iota // x.f is a struct field selector
	MethodVal                       // x.f is a method selector
	MethodExpr                      // x.f is a method expression
)

// A Selection describes a selector expression x.f.

		// TODO(gri) We may also want to augment the error message and
		// refer to the position (pos) in the original expression.
		if check.errpos.Pos().IsKnown() {
			assert(check.iota != nil)
			pos = check.errpos
		}

		// Report invalid syntax trees explicitly.
		if code == InvalidSyntaxTree {
			msg = "invalid syntax tree: " + msg
		}

}

// A Mode value is a set of flags (or 0).
// They control the amount of source code parsed and other optional
// parser functionality.
type Mode uint

const (
	PackageClauseOnly    Mode             = 1 << iota // stop parsing after package clause
	ImportsOnly                                       // stop parsing after import declarations
	ParseComments                                     // parse comments and add them to AST

		for j := 0; j < n; j++ {
			if j > 0 {
				g.p(", ")
			}
			g.p("h%d_%d", i, j)
		}
		if i == 0 {
			g.p(" = ")
			for j := 0; j < n; j++ {
				if j > 0 {
					g.p(", ")
				}
				g.p("1.0/(iota + %d)", j+1)
			}
		}
		g.p("\n")
	}
	g.p(")\n\n")
}

func (g *gen) inverse(n int) {
	g.p(`// Inverse Hilbert matrix
const (
`)
	for i := 0; i < n; i++ {
		for j := 0; j < n; j++ {

//
// The initial map-based implementation was too slow;
// see https://go-review.googlesource.com/c/tools/+/135655/1/go/ast/inspector/inspector.go#196

import (
	"go/ast"
	"math"
)

const (
	nArrayType = iota
	nAssignStmt
	nBadDecl
	nBadExpr
	nBadStmt
	nBasicLit
	nBinaryExpr
	nBlockStmt
	nBranchStmt
	nCallExpr
	nCaseClause
	nChanType
	nCommClause
	nComment
	nCommentGroup
	nCompositeLit