typecheck

package
v1.21.6 Latest Latest
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 Go to latest Published: Jan 9, 2024 License: BSD-3-Clause Imports: 16 Imported by: 0

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Index

Constants

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const LocalDictName = ".dict"

The name used for dictionary parameters or local variables.

Variables

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var DeclContext ir.Class = ir.PEXTERN // PEXTERN/PAUTO
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var DirtyAddrtaken = false

If DirtyAddrtaken is true, then there are OADDR whose corresponding arguments have not yet been marked as Addrtaken.

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var HaveInlineBody = func(fn *ir.Func) bool {
	base.Fatalf("HaveInlineBody not overridden")
	panic("unreachable")
}

HaveInlineBody reports whether we have fn's inline body available for inlining.

It's a function literal so that it can be overridden for GOEXPERIMENT=unified.

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var IncrementalAddrtaken = false

If IncrementalAddrtaken is false, we do not compute Addrtaken for an OADDR Node when it is built. The Addrtaken bits are set in bulk by computeAddrtaken. If IncrementalAddrtaken is true, then when an OADDR Node is built the Addrtaken field of its argument is updated immediately.

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var InitTodoFunc = ir.NewFunc(base.Pos)

Function collecting autotmps generated during typechecking, to be included in the package-level init function.

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var (
	NeedRuntimeType = func(*types.Type) {}
)
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var Target *ir.Package

Target is the package being compiled.

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var TypecheckAllowed bool

Functions

func AddImplicitDots 

func AddImplicitDots(n *ir.SelectorExpr) *ir.SelectorExpr

AddImplicitDots finds missing fields in obj.field that will give the shortest unique addressing and modifies the tree with missing field names.

func AssertFixedCall 

func AssertFixedCall(call *ir.CallExpr)

func AssignConv 

func AssignConv(n ir.Node, t *types.Type, context string) ir.Node

func AssignExpr 

func AssignExpr(n ir.Node) ir.Node

func Assignop 

func Assignop(src, dst *types.Type) (ir.Op, string)

Is type src assignment compatible to type dst? If so, return op code to use in conversion. If not, return OXXX. In this case, the string return parameter may hold a reason why. In all other cases, it'll be the empty string.

func Assignop1 

func Assignop1(src, dst *types.Type) (ir.Op, string)

func AutoLabel 

func AutoLabel(prefix string) *types.Sym

AutoLabel generates a new Name node for use with an automatically generated label. prefix is a short mnemonic (e.g. ".s" for switch) to help with debugging. It should begin with "." to avoid conflicts with user labels.

func BaseTypeIndex 

func BaseTypeIndex(t *types.Type) int64

func CalcMethods 

func CalcMethods(t *types.Type)

CalcMethods calculates all the methods (including embedding) of a non-interface type t.

func Call 

func Call(pos src.XPos, callee ir.Node, args []ir.Node, dots bool) ir.Node

func Callee 

func Callee(n ir.Node) ir.Node

func CheckFuncStack 

func CheckFuncStack()

func ClosureType 

func ClosureType(clo *ir.ClosureExpr) *types.Type

ClosureType returns the struct type used to hold all the information needed in the closure for clo (clo must be a OCLOSURE node). The address of a variable of the returned type can be cast to a func.

func ComputeAddrtaken 

func ComputeAddrtaken(top []ir.Node)

func Conv 

func Conv(n ir.Node, t *types.Type) ir.Node

func ConvNop 

func ConvNop(n ir.Node, t *types.Type) ir.Node

ConvNop converts node n to type t using the OCONVNOP op and typechecks the result with ctxExpr.

func Convertop 

func Convertop(srcConstant bool, src, dst *types.Type) (ir.Op, string)

Can we convert a value of type src to a value of type dst? If so, return op code to use in conversion (maybe OCONVNOP). If not, return OXXX. In this case, the string return parameter may hold a reason why. In all other cases, it'll be the empty string. srcConstant indicates whether the value of type src is a constant.

func DeclFunc 

func DeclFunc(sym *types.Sym, recv *ir.Field, params, results []*ir.Field) *ir.Func

func Declare 

func Declare(n *ir.Name, ctxt ir.Class)

Declare records that Node n declares symbol n.Sym in the specified declaration context.

func DeclareUniverse 

func DeclareUniverse()

DeclareUniverse makes the universe block visible within the current package.

func DefaultLit 

func DefaultLit(n ir.Node, t *types.Type) ir.Node

func Export 

func Export(n *ir.Name)

Export marks n for export (or reexport).

func Expr 

func Expr(n ir.Node) ir.Node

func Exprs 

func Exprs(exprs []ir.Node)

func FinishFuncBody 

func FinishFuncBody()

finish the body. called in auto-declaration context. returns in extern-declaration context.

func FixMethodCall 

func FixMethodCall(call *ir.CallExpr)

FixMethodCall rewrites a method call t.M(...) into a function call T.M(t, ...).

func FixVariadicCall 

func FixVariadicCall(call *ir.CallExpr)

FixVariadicCall rewrites calls to variadic functions to use an explicit ... argument if one is not already present.

func Func 

func Func(fn *ir.Func)

func Implements 

func Implements(t, iface *types.Type) bool

Implements reports whether t implements the interface iface. t can be an interface, a type parameter, or a concrete type.

func ImplementsExplain 

func ImplementsExplain(t, iface *types.Type) string

ImplementsExplain reports whether t implements the interface iface. t can be an interface, a type parameter, or a concrete type. If t does not implement iface, a non-empty string is returned explaining why.

func IndexConst 

func IndexConst(n ir.Node) int64

IndexConst checks if Node n contains a constant expression representable as a non-negative int and returns its value. If n is not a constant expression, not representable as an integer, or negative, it returns -1. If n is too large, it returns -2.

func InitCoverage 

func InitCoverage()

InitCoverage loads the definitions for routines called by code coverage instrumentation (similar to InitRuntime above).

func InitRuntime 

func InitRuntime()

InitRuntime loads the definitions for the low-level runtime functions, so that the compiler can generate calls to them, but does not make them visible to user code.

func InitUniverse 

func InitUniverse()

InitUniverse initializes the universe block.

func LinksymAddr 

func LinksymAddr(pos src.XPos, lsym *obj.LSym, typ *types.Type) *ir.AddrExpr

LinksymAddr returns a new expression that evaluates to the address of lsym. typ specifies the type of the addressed memory.

func Lookdot 

func Lookdot(n *ir.SelectorExpr, t *types.Type, dostrcmp int) *types.Field

Lookdot looks up field or method n.Sel in the type t and returns the matching field. It transforms the op of node n to ODOTINTER or ODOTMETH, if appropriate. It also may add a StarExpr node to n.X as needed for access to non-pointer methods. If dostrcmp is 0, it matches the field/method with the exact symbol as n.Sel (appropriate for exported fields). If dostrcmp is 1, it matches by name exactly. If dostrcmp is 2, it matches names with case folding.

func Lookdot1 

func Lookdot1(errnode ir.Node, s *types.Sym, t *types.Type, fs *types.Fields, dostrcmp int) *types.Field

Lookdot1 looks up the specified method s in the list fs of methods, returning the matching field or nil. If dostrcmp is 0, it matches the symbols. If dostrcmp is 1, it matches by name exactly. If dostrcmp is 2, it matches names with case folding.

func Lookup 

func Lookup(name string) *types.Sym

func LookupCoverage 

func LookupCoverage(name string) *ir.Name

LookupCoverage looks up the Go function 'name' in package runtime/coverage. This function must follow the internal calling convention.

func LookupNum 

func LookupNum(prefix string, n int) *types.Sym

LookupNum returns types.LocalPkg.LookupNum(prefix, n).

func LookupRuntime 

func LookupRuntime(name string) *ir.Name

func LookupRuntimeABI 

func LookupRuntimeABI(name string, abi obj.ABI) *obj.LSym

LookupRuntimeABI looks up a name in package runtime using the given ABI.

func LookupRuntimeFunc 

func LookupRuntimeFunc(name string) *obj.LSym

LookupRuntimeFunc looks up Go function name in package runtime. This function must follow the internal calling convention.

func LookupRuntimeVar 

func LookupRuntimeVar(name string) *obj.LSym

LookupRuntimeVar looks up a variable (or assembly function) name in package runtime. If this is a function, it may have a special calling convention.

func MakeDotArgs 

func MakeDotArgs(pos src.XPos, typ *types.Type, args []ir.Node) ir.Node

MakeDotArgs package all the arguments that match a ... T parameter into a []T.

func MethodValueType 

func MethodValueType(n *ir.SelectorExpr) *types.Type

MethodValueType returns the struct type used to hold all the information needed in the closure for a OMETHVALUE node. The address of a variable of the returned type can be cast to a func.

func NewFuncParams 

func NewFuncParams(tl *types.Type, mustname bool) []*ir.Field

Given funarg struct list, return list of fn args.

func NewMethodType 

func NewMethodType(sig *types.Type, recv *types.Type) *types.Type

f is method type, with receiver. return function type, receiver as first argument (or not).

func NewName 

func NewName(s *types.Sym) *ir.Name

NewName returns a new ONAME Node associated with symbol s.

func NodAddr 

func NodAddr(n ir.Node) *ir.AddrExpr

NodAddr returns a node representing &n at base.Pos.

func NodAddrAt 

func NodAddrAt(pos src.XPos, n ir.Node) *ir.AddrExpr

NodAddrAt returns a node representing &n at position pos.

func NodNil 

func NodNil() ir.Node

func OrigBool 

func OrigBool(n ir.Node, v bool) ir.Node

func OrigConst 

func OrigConst(n ir.Node, v constant.Value) ir.Node

OrigConst returns an OLITERAL with orig n and value v.

func OrigInt 

func OrigInt(n ir.Node, v int64) ir.Node

func RangeExprType 

func RangeExprType(t *types.Type) *types.Type

func Resolve 

func Resolve(n ir.Node) (res ir.Node)

Resolve resolves an ONONAME node to a definition, if any. If n is not an ONONAME node, Resolve returns n unchanged. If n is an ONONAME node and not in the same package, then n.Sym() is resolved using import data. Otherwise, Resolve returns n.Sym().Def. An ONONAME node can be created using ir.NewIdent(), so an imported symbol can be resolved via Resolve(ir.NewIdent(src.NoXPos, sym)).

func RewriteMultiValueCall 

func RewriteMultiValueCall(n ir.InitNode, call ir.Node)

RewriteMultiValueCall rewrites multi-valued f() to use temporaries, so the backend wouldn't need to worry about tuple-valued expressions.

func RewriteNonNameCall 

func RewriteNonNameCall(n *ir.CallExpr)

RewriteNonNameCall replaces non-Name call expressions with temps, rewriting f()(...) to t0 := f(); t0(...).

func SetBaseTypeIndex 

func SetBaseTypeIndex(t *types.Type, i, pi int64)

func StartFuncBody 

func StartFuncBody(fn *ir.Func)

declare the function proper and declare the arguments. called in extern-declaration context returns in auto-declaration context.

func Stmt 

func Stmt(n ir.Node) ir.Node

func Stmts 

func Stmts(stmts []ir.Node)

func SubstArgTypes 

func SubstArgTypes(old *ir.Name, types_ ...*types.Type) *ir.Name

SubstArgTypes substitutes the given list of types for successive occurrences of the "any" placeholder in the type syntax expression n.Type. The result of SubstArgTypes MUST be assigned back to old, e.g. 

n.Left = SubstArgTypes(n.Left, t1, t2)

func Temp 

func Temp(t *types.Type) *ir.Name

func TempAt 

func TempAt(pos src.XPos, curfn *ir.Func, t *types.Type) *ir.Name

make a new Node off the books.

func TparamExportName 

func TparamExportName(prefix string, name string, index int) string

TparamExportName creates a unique name for type param in a method or a generic type, using the specified unique prefix and the index of the type param. The index is only used if the type param is blank, in which case the blank is replace by "$<index>". A unique name is needed for later substitution in the compiler and export/import that keeps blank type params associated with the correct constraint.

func TparamName 

func TparamName(exportName string) string

TparamName returns the real name of a type parameter, after stripping its qualifying prefix and reverting blank-name encoding. See TparamExportName for details.

Types

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Source Files

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