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Update to tengo v2 (#976)

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This commit is contained in:
Wim 2020-01-09 21:52:19 +01:00 committed by GitHub
parent 0f708daf2d
commit 9d84d6dd64
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GPG Key ID: 4AEE18F83AFDEB23
191 changed files with 11406 additions and 11832 deletions
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10
gateway/gateway.go
View File

@ -10,8 +10,8 @@ import (
"github.com/42wim/matterbridge/bridge"
"github.com/42wim/matterbridge/bridge/config"
"github.com/42wim/matterbridge/internal"
"github.com/d5/tengo/script"
"github.com/d5/tengo/stdlib"
"github.com/d5/tengo/v2"
"github.com/d5/tengo/v2/stdlib"
lru "github.com/hashicorp/golang-lru"
"github.com/matterbridge/emoji"
"github.com/sirupsen/logrus"
@ -514,7 +514,7 @@ func modifyMessageTengo(filename string, msg *config.Message) error {
if err != nil {
return err
}
s := script.New(res)
s := tengo.NewScript(res)
s.SetImports(stdlib.GetModuleMap(stdlib.AllModuleNames()...))
_ = s.Add("msgText", msg.Text)
_ = s.Add("msgUsername", msg.Username)
@ -541,7 +541,7 @@ func (gw *Gateway) modifyUsernameTengo(msg *config.Message, br *bridge.Bridge) (
if err != nil {
return "", err
}
s := script.New(res)
s := tengo.NewScript(res)
s.SetImports(stdlib.GetModuleMap(stdlib.AllModuleNames()...))
_ = s.Add("result", "")
_ = s.Add("msgText", msg.Text)
@ -580,7 +580,7 @@ func (gw *Gateway) modifySendMessageTengo(origmsg *config.Message, msg *config.M
return err
}
}
s := script.New(res)
s := tengo.NewScript(res)
s.SetImports(stdlib.GetModuleMap(stdlib.AllModuleNames()...))
_ = s.Add("inAccount", origmsg.Account)
_ = s.Add("inProtocol", origmsg.Protocol)

2
go.mod
View File

@ -7,7 +7,7 @@ require (
github.com/Philipp15b/go-steam v1.0.1-0.20190816133340-b04c5a83c1c0
github.com/Rhymen/go-whatsapp v0.1.0
github.com/bwmarrin/discordgo v0.20.2
github.com/d5/tengo v1.24.8
github.com/d5/tengo/v2 v2.0.2
github.com/dfordsoft/golib v0.0.0-20180902042739-76ee6ab99bec
github.com/fsnotify/fsnotify v1.4.7
github.com/go-telegram-bot-api/telegram-bot-api v4.6.5-0.20181225215658-ec221ba9ea45+incompatible

4
go.sum
View File

@ -33,8 +33,8 @@ github.com/coreos/etcd v3.3.10+incompatible/go.mod h1:uF7uidLiAD3TWHmW31ZFd/JWoc
github.com/coreos/go-semver v0.2.0/go.mod h1:nnelYz7RCh+5ahJtPPxZlU+153eP4D4r3EedlOD2RNk=
github.com/coreos/go-systemd v0.0.0-20190321100706-95778dfbb74e/go.mod h1:F5haX7vjVVG0kc13fIWeqUViNPyEJxv/OmvnBo0Yme4=
github.com/coreos/pkg v0.0.0-20180928190104-399ea9e2e55f/go.mod h1:E3G3o1h8I7cfcXa63jLwjI0eiQQMgzzUDFVpN/nH/eA=
github.com/d5/tengo v1.24.8 h1:PRJ+NWt7ae/9sSbIfThOBTkPSvNV+dwYoBAvwfNgNJY=
github.com/d5/tengo v1.24.8/go.mod h1:VhLq8Q2QFhCIJO3NhvM934qOThykMqJi9y9Siqd1ocQ=
github.com/d5/tengo/v2 v2.0.2 h1:3APkPZPc1FExaJoWrN5YzvDqc6GNkQH6ehmCRDmN83I=
github.com/d5/tengo/v2 v2.0.2/go.mod h1:XRGjEs5I9jYIKTxly6HCF8oiiilk5E/RYXOZ5b0DZC8=
github.com/davecgh/go-spew v1.1.0/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
github.com/davecgh/go-spew v1.1.1 h1:vj9j/u1bqnvCEfJOwUhtlOARqs3+rkHYY13jYWTU97c=
github.com/davecgh/go-spew v1.1.1/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=

17
vendor/github.com/d5/tengo/.travis.yml generated vendored
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@ -1,17 +0,0 @@
language: go
go:
- "1.12"
install:
- env GO111MODULE=on go get -u golang.org/x/lint/golint
script:
- env GO111MODULE=on make test
deploy:
- provider: script
skip_cleanup: true
script: curl -sL https://git.io/goreleaser | bash
on:
tags: true

35
vendor/github.com/d5/tengo/compiler/ast/array_lit.go generated vendored
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@ -1,35 +0,0 @@
package ast
import (
"strings"
"github.com/d5/tengo/compiler/source"
)
// ArrayLit represents an array literal.
type ArrayLit struct {
Elements []Expr
LBrack source.Pos
RBrack source.Pos
}
func (e *ArrayLit) exprNode() {}
// Pos returns the position of first character belonging to the node.
func (e *ArrayLit) Pos() source.Pos {
return e.LBrack
}
// End returns the position of first character immediately after the node.
func (e *ArrayLit) End() source.Pos {
return e.RBrack + 1
}
func (e *ArrayLit) String() string {
var elements []string
for _, m := range e.Elements {
elements = append(elements, m.String())
}
return "[" + strings.Join(elements, ", ") + "]"
}

40
vendor/github.com/d5/tengo/compiler/ast/assign_stmt.go generated vendored
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@ -1,40 +0,0 @@
package ast
import (
"strings"
"github.com/d5/tengo/compiler/source"
"github.com/d5/tengo/compiler/token"
)
// AssignStmt represents an assignment statement.
type AssignStmt struct {
LHS []Expr
RHS []Expr
Token token.Token
TokenPos source.Pos
}
func (s *AssignStmt) stmtNode() {}
// Pos returns the position of first character belonging to the node.
func (s *AssignStmt) Pos() source.Pos {
return s.LHS[0].Pos()
}
// End returns the position of first character immediately after the node.
func (s *AssignStmt) End() source.Pos {
return s.RHS[len(s.RHS)-1].End()
}
func (s *AssignStmt) String() string {
var lhs, rhs []string
for _, e := range s.LHS {
lhs = append(lhs, e.String())
}
for _, e := range s.RHS {
rhs = append(rhs, e.String())
}
return strings.Join(lhs, ", ") + " " + s.Token.String() + " " + strings.Join(rhs, ", ")
}

5
vendor/github.com/d5/tengo/compiler/ast/ast.go generated vendored
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@ -1,5 +0,0 @@
package ast
const (
nullRep = "<null>"
)

25
vendor/github.com/d5/tengo/compiler/ast/bad_expr.go generated vendored
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@ -1,25 +0,0 @@
package ast
import "github.com/d5/tengo/compiler/source"
// BadExpr represents a bad expression.
type BadExpr struct {
From source.Pos
To source.Pos
}
func (e *BadExpr) exprNode() {}
// Pos returns the position of first character belonging to the node.
func (e *BadExpr) Pos() source.Pos {
return e.From
}
// End returns the position of first character immediately after the node.
func (e *BadExpr) End() source.Pos {
return e.To
}
func (e *BadExpr) String() string {
return "<bad expression>"
}

25
vendor/github.com/d5/tengo/compiler/ast/bad_stmt.go generated vendored
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@ -1,25 +0,0 @@
package ast
import "github.com/d5/tengo/compiler/source"
// BadStmt represents a bad statement.
type BadStmt struct {
From source.Pos
To source.Pos
}
func (s *BadStmt) stmtNode() {}
// Pos returns the position of first character belonging to the node.
func (s *BadStmt) Pos() source.Pos {
return s.From
}
// End returns the position of first character immediately after the node.
func (s *BadStmt) End() source.Pos {
return s.To
}
func (s *BadStmt) String() string {
return "<bad statement>"
}

30
vendor/github.com/d5/tengo/compiler/ast/binary_expr.go generated vendored
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@ -1,30 +0,0 @@
package ast
import (
"github.com/d5/tengo/compiler/source"
"github.com/d5/tengo/compiler/token"
)
// BinaryExpr represents a binary operator expression.
type BinaryExpr struct {
LHS Expr
RHS Expr
Token token.Token
TokenPos source.Pos
}
func (e *BinaryExpr) exprNode() {}
// Pos returns the position of first character belonging to the node.
func (e *BinaryExpr) Pos() source.Pos {
return e.LHS.Pos()
}
// End returns the position of first character immediately after the node.
func (e *BinaryExpr) End() source.Pos {
return e.RHS.End()
}
func (e *BinaryExpr) String() string {
return "(" + e.LHS.String() + " " + e.Token.String() + " " + e.RHS.String() + ")"
}

35
vendor/github.com/d5/tengo/compiler/ast/block_stmt.go generated vendored
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@ -1,35 +0,0 @@
package ast
import (
"strings"
"github.com/d5/tengo/compiler/source"
)
// BlockStmt represents a block statement.
type BlockStmt struct {
Stmts []Stmt
LBrace source.Pos
RBrace source.Pos
}
func (s *BlockStmt) stmtNode() {}
// Pos returns the position of first character belonging to the node.
func (s *BlockStmt) Pos() source.Pos {
return s.LBrace
}
// End returns the position of first character immediately after the node.
func (s *BlockStmt) End() source.Pos {
return s.RBrace + 1
}
func (s *BlockStmt) String() string {
var list []string
for _, e := range s.Stmts {
list = append(list, e.String())
}
return "{" + strings.Join(list, "; ") + "}"
}

26
vendor/github.com/d5/tengo/compiler/ast/bool_lit.go generated vendored
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@ -1,26 +0,0 @@
package ast
import "github.com/d5/tengo/compiler/source"
// BoolLit represents a boolean literal.
type BoolLit struct {
Value bool
ValuePos source.Pos
Literal string
}
func (e *BoolLit) exprNode() {}
// Pos returns the position of first character belonging to the node.
func (e *BoolLit) Pos() source.Pos {
return e.ValuePos
}
// End returns the position of first character immediately after the node.
func (e *BoolLit) End() source.Pos {
return source.Pos(int(e.ValuePos) + len(e.Literal))
}
func (e *BoolLit) String() string {
return e.Literal
}

38
vendor/github.com/d5/tengo/compiler/ast/branch_stmt.go generated vendored
View File

@ -1,38 +0,0 @@
package ast
import (
"github.com/d5/tengo/compiler/source"
"github.com/d5/tengo/compiler/token"
)
// BranchStmt represents a branch statement.
type BranchStmt struct {
Token token.Token
TokenPos source.Pos
Label *Ident
}
func (s *BranchStmt) stmtNode() {}
// Pos returns the position of first character belonging to the node.
func (s *BranchStmt) Pos() source.Pos {
return s.TokenPos
}
// End returns the position of first character immediately after the node.
func (s *BranchStmt) End() source.Pos {
if s.Label != nil {
return s.Label.End()
}
return source.Pos(int(s.TokenPos) + len(s.Token.String()))
}
func (s *BranchStmt) String() string {
var label string
if s.Label != nil {
label = " " + s.Label.Name
}
return s.Token.String() + label
}

36
vendor/github.com/d5/tengo/compiler/ast/call_expr.go generated vendored
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@ -1,36 +0,0 @@
package ast
import (
"strings"
"github.com/d5/tengo/compiler/source"
)
// CallExpr represents a function call expression.
type CallExpr struct {
Func Expr
LParen source.Pos
Args []Expr
RParen source.Pos
}
func (e *CallExpr) exprNode() {}
// Pos returns the position of first character belonging to the node.
func (e *CallExpr) Pos() source.Pos {
return e.Func.Pos()
}
// End returns the position of first character immediately after the node.
func (e *CallExpr) End() source.Pos {
return e.RParen + 1
}
func (e *CallExpr) String() string {
var args []string
for _, e := range e.Args {
args = append(args, e.String())
}
return e.Func.String() + "(" + strings.Join(args, ", ") + ")"
}

26
vendor/github.com/d5/tengo/compiler/ast/char_lit.go generated vendored
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@ -1,26 +0,0 @@
package ast
import "github.com/d5/tengo/compiler/source"
// CharLit represents a character literal.
type CharLit struct {
Value rune
ValuePos source.Pos
Literal string
}
func (e *CharLit) exprNode() {}
// Pos returns the position of first character belonging to the node.
func (e *CharLit) Pos() source.Pos {
return e.ValuePos
}
// End returns the position of first character immediately after the node.
func (e *CharLit) End() source.Pos {
return source.Pos(int(e.ValuePos) + len(e.Literal))
}
func (e *CharLit) String() string {
return e.Literal
}

30
vendor/github.com/d5/tengo/compiler/ast/cond_expr.go generated vendored
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@ -1,30 +0,0 @@
package ast
import (
"github.com/d5/tengo/compiler/source"
)
// CondExpr represents a ternary conditional expression.
type CondExpr struct {
Cond Expr
True Expr
False Expr
QuestionPos source.Pos
ColonPos source.Pos
}
func (e *CondExpr) exprNode() {}
// Pos returns the position of first character belonging to the node.
func (e *CondExpr) Pos() source.Pos {
return e.Cond.Pos()
}
// End returns the position of first character immediately after the node.
func (e *CondExpr) End() source.Pos {
return e.False.End()
}
func (e *CondExpr) String() string {
return "(" + e.Cond.String() + " ? " + e.True.String() + " : " + e.False.String() + ")"
}

29
vendor/github.com/d5/tengo/compiler/ast/empty_stmt.go generated vendored
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@ -1,29 +0,0 @@
package ast
import "github.com/d5/tengo/compiler/source"
// EmptyStmt represents an empty statement.
type EmptyStmt struct {
Semicolon source.Pos
Implicit bool
}
func (s *EmptyStmt) stmtNode() {}
// Pos returns the position of first character belonging to the node.
func (s *EmptyStmt) Pos() source.Pos {
return s.Semicolon
}
// End returns the position of first character immediately after the node.
func (s *EmptyStmt) End() source.Pos {
if s.Implicit {
return s.Semicolon
}
return s.Semicolon + 1
}
func (s *EmptyStmt) String() string {
return ";"
}

29
vendor/github.com/d5/tengo/compiler/ast/error_expr.go generated vendored
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@ -1,29 +0,0 @@
package ast
import (
"github.com/d5/tengo/compiler/source"
)
// ErrorExpr represents an error expression
type ErrorExpr struct {
Expr Expr
ErrorPos source.Pos
LParen source.Pos
RParen source.Pos
}
func (e *ErrorExpr) exprNode() {}
// Pos returns the position of first character belonging to the node.
func (e *ErrorExpr) Pos() source.Pos {
return e.ErrorPos
}
// End returns the position of first character immediately after the node.
func (e *ErrorExpr) End() source.Pos {
return e.RParen
}
func (e *ErrorExpr) String() string {
return "error(" + e.Expr.String() + ")"
}

27
vendor/github.com/d5/tengo/compiler/ast/export_stmt.go generated vendored
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@ -1,27 +0,0 @@
package ast
import (
"github.com/d5/tengo/compiler/source"
)
// ExportStmt represents an export statement.
type ExportStmt struct {
ExportPos source.Pos
Result Expr
}
func (s *ExportStmt) stmtNode() {}
// Pos returns the position of first character belonging to the node.
func (s *ExportStmt) Pos() source.Pos {
return s.ExportPos
}
// End returns the position of first character immediately after the node.
func (s *ExportStmt) End() source.Pos {
return s.Result.End()
}
func (s *ExportStmt) String() string {
return "export " + s.Result.String()
}

7
vendor/github.com/d5/tengo/compiler/ast/expr.go generated vendored
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@ -1,7 +0,0 @@
package ast
// Expr represents an expression node in the AST.
type Expr interface {
Node
exprNode()
}

24
vendor/github.com/d5/tengo/compiler/ast/expr_stmt.go generated vendored
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@ -1,24 +0,0 @@
package ast
import "github.com/d5/tengo/compiler/source"
// ExprStmt represents an expression statement.
type ExprStmt struct {
Expr Expr
}
func (s *ExprStmt) stmtNode() {}
// Pos returns the position of first character belonging to the node.
func (s *ExprStmt) Pos() source.Pos {
return s.Expr.Pos()
}
// End returns the position of first character immediately after the node.
func (s *ExprStmt) End() source.Pos {
return s.Expr.End()
}
func (s *ExprStmt) String() string {
return s.Expr.String()
}

26
vendor/github.com/d5/tengo/compiler/ast/float_lit.go generated vendored
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@ -1,26 +0,0 @@
package ast
import "github.com/d5/tengo/compiler/source"
// FloatLit represents a floating point literal.
type FloatLit struct {
Value float64
ValuePos source.Pos
Literal string
}
func (e *FloatLit) exprNode() {}
// Pos returns the position of first character belonging to the node.
func (e *FloatLit) Pos() source.Pos {
return e.ValuePos
}
// End returns the position of first character immediately after the node.
func (e *FloatLit) End() source.Pos {
return source.Pos(int(e.ValuePos) + len(e.Literal))
}
func (e *FloatLit) String() string {
return e.Literal
}

32
vendor/github.com/d5/tengo/compiler/ast/for_in_stmt.go generated vendored
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@ -1,32 +0,0 @@
package ast
import "github.com/d5/tengo/compiler/source"
// ForInStmt represents a for-in statement.
type ForInStmt struct {
ForPos source.Pos
Key *Ident
Value *Ident
Iterable Expr
Body *BlockStmt
}
func (s *ForInStmt) stmtNode() {}
// Pos returns the position of first character belonging to the node.
func (s *ForInStmt) Pos() source.Pos {
return s.ForPos
}
// End returns the position of first character immediately after the node.
func (s *ForInStmt) End() source.Pos {
return s.Body.End()
}
func (s *ForInStmt) String() string {
if s.Value != nil {
return "for " + s.Key.String() + ", " + s.Value.String() + " in " + s.Iterable.String() + " " + s.Body.String()
}
return "for " + s.Key.String() + " in " + s.Iterable.String() + " " + s.Body.String()
}

43
vendor/github.com/d5/tengo/compiler/ast/for_stmt.go generated vendored
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@ -1,43 +0,0 @@
package ast
import "github.com/d5/tengo/compiler/source"
// ForStmt represents a for statement.
type ForStmt struct {
ForPos source.Pos
Init Stmt
Cond Expr
Post Stmt
Body *BlockStmt
}
func (s *ForStmt) stmtNode() {}
// Pos returns the position of first character belonging to the node.
func (s *ForStmt) Pos() source.Pos {
return s.ForPos
}
// End returns the position of first character immediately after the node.
func (s *ForStmt) End() source.Pos {
return s.Body.End()
}
func (s *ForStmt) String() string {
var init, cond, post string
if s.Init != nil {
init = s.Init.String()
}
if s.Cond != nil {
cond = s.Cond.String() + " "
}
if s.Post != nil {
post = s.Post.String()
}
if init != "" || post != "" {
return "for " + init + " ; " + cond + " ; " + post + s.Body.String()
}
return "for " + cond + s.Body.String()
}

25
vendor/github.com/d5/tengo/compiler/ast/func_lit.go generated vendored
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@ -1,25 +0,0 @@
package ast
import "github.com/d5/tengo/compiler/source"
// FuncLit represents a function literal.
type FuncLit struct {
Type *FuncType
Body *BlockStmt
}
func (e *FuncLit) exprNode() {}
// Pos returns the position of first character belonging to the node.
func (e *FuncLit) Pos() source.Pos {
return e.Type.Pos()
}
// End returns the position of first character immediately after the node.
func (e *FuncLit) End() source.Pos {
return e.Body.End()
}
func (e *FuncLit) String() string {
return "func" + e.Type.Params.String() + " " + e.Body.String()
}

25
vendor/github.com/d5/tengo/compiler/ast/func_type.go generated vendored
View File

@ -1,25 +0,0 @@
package ast
import "github.com/d5/tengo/compiler/source"
// FuncType represents a function type definition.
type FuncType struct {
FuncPos source.Pos
Params *IdentList
}
func (e *FuncType) exprNode() {}
// Pos returns the position of first character belonging to the node.
func (e *FuncType) Pos() source.Pos {
return e.FuncPos
}
// End returns the position of first character immediately after the node.
func (e *FuncType) End() source.Pos {
return e.Params.End()
}
func (e *FuncType) String() string {
return "func" + e.Params.String()
}

29
vendor/github.com/d5/tengo/compiler/ast/ident.go generated vendored
View File

@ -1,29 +0,0 @@
package ast
import "github.com/d5/tengo/compiler/source"
// Ident represents an identifier.
type Ident struct {
Name string
NamePos source.Pos
}
func (e *Ident) exprNode() {}
// Pos returns the position of first character belonging to the node.
func (e *Ident) Pos() source.Pos {
return e.NamePos
}
// End returns the position of first character immediately after the node.
func (e *Ident) End() source.Pos {
return source.Pos(int(e.NamePos) + len(e.Name))
}
func (e *Ident) String() string {
if e != nil {
return e.Name
}
return nullRep
}

40
vendor/github.com/d5/tengo/compiler/ast/if_stmt.go generated vendored
View File

@ -1,40 +0,0 @@
package ast
import "github.com/d5/tengo/compiler/source"
// IfStmt represents an if statement.
type IfStmt struct {
IfPos source.Pos
Init Stmt
Cond Expr
Body *BlockStmt
Else Stmt // else branch; or nil
}
func (s *IfStmt) stmtNode() {}
// Pos returns the position of first character belonging to the node.
func (s *IfStmt) Pos() source.Pos {
return s.IfPos
}
// End returns the position of first character immediately after the node.
func (s *IfStmt) End() source.Pos {
if s.Else != nil {
return s.Else.End()
}
return s.Body.End()
}
func (s *IfStmt) String() string {
var initStmt, elseStmt string
if s.Init != nil {
initStmt = s.Init.String() + "; "
}
if s.Else != nil {
elseStmt = " else " + s.Else.String()
}
return "if " + initStmt + s.Cond.String() + " " + s.Body.String() + elseStmt
}

29
vendor/github.com/d5/tengo/compiler/ast/immutable_expr.go generated vendored
View File

@ -1,29 +0,0 @@
package ast
import (
"github.com/d5/tengo/compiler/source"
)
// ImmutableExpr represents an immutable expression
type ImmutableExpr struct {
Expr Expr
ErrorPos source.Pos
LParen source.Pos
RParen source.Pos
}
func (e *ImmutableExpr) exprNode() {}
// Pos returns the position of first character belonging to the node.
func (e *ImmutableExpr) Pos() source.Pos {
return e.ErrorPos
}
// End returns the position of first character immediately after the node.
func (e *ImmutableExpr) End() source.Pos {
return e.RParen
}
func (e *ImmutableExpr) String() string {
return "immutable(" + e.Expr.String() + ")"
}

29
vendor/github.com/d5/tengo/compiler/ast/import_expr.go generated vendored
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@ -1,29 +0,0 @@
package ast
import (
"github.com/d5/tengo/compiler/source"
"github.com/d5/tengo/compiler/token"
)
// ImportExpr represents an import expression
type ImportExpr struct {
ModuleName string
Token token.Token
TokenPos source.Pos
}
func (e *ImportExpr) exprNode() {}
// Pos returns the position of first character belonging to the node.
func (e *ImportExpr) Pos() source.Pos {
return e.TokenPos
}
// End returns the position of first character immediately after the node.
func (e *ImportExpr) End() source.Pos {
return source.Pos(int(e.TokenPos) + 10 + len(e.ModuleName)) // import("moduleName")
}
func (e *ImportExpr) String() string {
return `import("` + e.ModuleName + `")"`
}

29
vendor/github.com/d5/tengo/compiler/ast/inc_dec_stmt.go generated vendored
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@ -1,29 +0,0 @@
package ast
import (
"github.com/d5/tengo/compiler/source"
"github.com/d5/tengo/compiler/token"
)
// IncDecStmt represents increment or decrement statement.
type IncDecStmt struct {
Expr Expr
Token token.Token
TokenPos source.Pos
}
func (s *IncDecStmt) stmtNode() {}
// Pos returns the position of first character belonging to the node.
func (s *IncDecStmt) Pos() source.Pos {
return s.Expr.Pos()
}
// End returns the position of first character immediately after the node.
func (s *IncDecStmt) End() source.Pos {
return source.Pos(int(s.TokenPos) + 2)
}
func (s *IncDecStmt) String() string {
return s.Expr.String() + s.Token.String()
}

32
vendor/github.com/d5/tengo/compiler/ast/index_expr.go generated vendored
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@ -1,32 +0,0 @@
package ast
import "github.com/d5/tengo/compiler/source"
// IndexExpr represents an index expression.
type IndexExpr struct {
Expr Expr
LBrack source.Pos
Index Expr
RBrack source.Pos
}
func (e *IndexExpr) exprNode() {}
// Pos returns the position of first character belonging to the node.
func (e *IndexExpr) Pos() source.Pos {
return e.Expr.Pos()
}
// End returns the position of first character immediately after the node.
func (e *IndexExpr) End() source.Pos {
return e.RBrack + 1
}
func (e *IndexExpr) String() string {
var index string
if e.Index != nil {
index = e.Index.String()
}
return e.Expr.String() + "[" + index + "]"
}

26
vendor/github.com/d5/tengo/compiler/ast/int_lit.go generated vendored
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@ -1,26 +0,0 @@
package ast
import "github.com/d5/tengo/compiler/source"
// IntLit represents an integer literal.
type IntLit struct {
Value int64
ValuePos source.Pos
Literal string
}
func (e *IntLit) exprNode() {}
// Pos returns the position of first character belonging to the node.
func (e *IntLit) Pos() source.Pos {
return e.ValuePos
}
// End returns the position of first character immediately after the node.
func (e *IntLit) End() source.Pos {
return source.Pos(int(e.ValuePos) + len(e.Literal))
}
func (e *IntLit) String() string {
return e.Literal
}

27
vendor/github.com/d5/tengo/compiler/ast/map_element_lit.go generated vendored
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@ -1,27 +0,0 @@
package ast
import "github.com/d5/tengo/compiler/source"
// MapElementLit represents a map element.
type MapElementLit struct {
Key string
KeyPos source.Pos
ColonPos source.Pos
Value Expr
}
func (e *MapElementLit) exprNode() {}
// Pos returns the position of first character belonging to the node.
func (e *MapElementLit) Pos() source.Pos {
return e.KeyPos
}
// End returns the position of first character immediately after the node.
func (e *MapElementLit) End() source.Pos {
return e.Value.End()
}
func (e *MapElementLit) String() string {
return e.Key + ": " + e.Value.String()
}

35
vendor/github.com/d5/tengo/compiler/ast/map_lit.go generated vendored
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@ -1,35 +0,0 @@
package ast
import (
"strings"
"github.com/d5/tengo/compiler/source"
)
// MapLit represents a map literal.
type MapLit struct {
LBrace source.Pos
Elements []*MapElementLit
RBrace source.Pos
}
func (e *MapLit) exprNode() {}
// Pos returns the position of first character belonging to the node.
func (e *MapLit) Pos() source.Pos {
return e.LBrace
}
// End returns the position of first character immediately after the node.
func (e *MapLit) End() source.Pos {
return e.RBrace + 1
}
func (e *MapLit) String() string {
var elements []string
for _, m := range e.Elements {
elements = append(elements, m.String())
}
return "{" + strings.Join(elements, ", ") + "}"
}

13
vendor/github.com/d5/tengo/compiler/ast/node.go generated vendored
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@ -1,13 +0,0 @@
package ast
import "github.com/d5/tengo/compiler/source"
// Node represents a node in the AST.
type Node interface {
// Pos returns the position of first character belonging to the node.
Pos() source.Pos
// End returns the position of first character immediately after the node.
End() source.Pos
// String returns a string representation of the node.
String() string
}

26
vendor/github.com/d5/tengo/compiler/ast/paren_expr.go generated vendored
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@ -1,26 +0,0 @@
package ast
import "github.com/d5/tengo/compiler/source"
// ParenExpr represents a parenthesis wrapped expression.
type ParenExpr struct {
Expr Expr
LParen source.Pos
RParen source.Pos
}
func (e *ParenExpr) exprNode() {}
// Pos returns the position of first character belonging to the node.
func (e *ParenExpr) Pos() source.Pos {
return e.LParen
}
// End returns the position of first character immediately after the node.
func (e *ParenExpr) End() source.Pos {
return e.RParen + 1
}
func (e *ParenExpr) String() string {
return "(" + e.Expr.String() + ")"
}

35
vendor/github.com/d5/tengo/compiler/ast/return_stmt.go generated vendored
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@ -1,35 +0,0 @@
package ast
import (
"github.com/d5/tengo/compiler/source"
)
// ReturnStmt represents a return statement.
type ReturnStmt struct {
ReturnPos source.Pos
Result Expr
}
func (s *ReturnStmt) stmtNode() {}
// Pos returns the position of first character belonging to the node.
func (s *ReturnStmt) Pos() source.Pos {
return s.ReturnPos
}
// End returns the position of first character immediately after the node.
func (s *ReturnStmt) End() source.Pos {
if s.Result != nil {
return s.Result.End()
}
return s.ReturnPos + 6
}
func (s *ReturnStmt) String() string {
if s.Result != nil {
return "return " + s.Result.String()
}
return "return"
}

25
vendor/github.com/d5/tengo/compiler/ast/selector_expr.go generated vendored
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@ -1,25 +0,0 @@
package ast
import "github.com/d5/tengo/compiler/source"
// SelectorExpr represents a selector expression.
type SelectorExpr struct {
Expr Expr
Sel Expr
}
func (e *SelectorExpr) exprNode() {}
// Pos returns the position of first character belonging to the node.
func (e *SelectorExpr) Pos() source.Pos {
return e.Expr.Pos()
}
// End returns the position of first character immediately after the node.
func (e *SelectorExpr) End() source.Pos {
return e.Sel.End()
}
func (e *SelectorExpr) String() string {
return e.Expr.String() + "." + e.Sel.String()
}

36
vendor/github.com/d5/tengo/compiler/ast/slice_expr.go generated vendored
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@ -1,36 +0,0 @@
package ast
import "github.com/d5/tengo/compiler/source"
// SliceExpr represents a slice expression.
type SliceExpr struct {
Expr Expr
LBrack source.Pos
Low Expr
High Expr
RBrack source.Pos
}
func (e *SliceExpr) exprNode() {}
// Pos returns the position of first character belonging to the node.
func (e *SliceExpr) Pos() source.Pos {
return e.Expr.Pos()
}
// End returns the position of first character immediately after the node.
func (e *SliceExpr) End() source.Pos {
return e.RBrack + 1
}
func (e *SliceExpr) String() string {
var low, high string
if e.Low != nil {
low = e.Low.String()
}
if e.High != nil {
high = e.High.String()
}
return e.Expr.String() + "[" + low + ":" + high + "]"
}

7
vendor/github.com/d5/tengo/compiler/ast/stmt.go generated vendored
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@ -1,7 +0,0 @@
package ast
// Stmt represents a statement in the AST.
type Stmt interface {
Node
stmtNode()
}

26
vendor/github.com/d5/tengo/compiler/ast/string_lit.go generated vendored
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@ -1,26 +0,0 @@
package ast
import "github.com/d5/tengo/compiler/source"
// StringLit represents a string literal.
type StringLit struct {
Value string
ValuePos source.Pos
Literal string
}
func (e *StringLit) exprNode() {}
// Pos returns the position of first character belonging to the node.
func (e *StringLit) Pos() source.Pos {
return e.ValuePos
}
// End returns the position of first character immediately after the node.
func (e *StringLit) End() source.Pos {
return source.Pos(int(e.ValuePos) + len(e.Literal))
}
func (e *StringLit) String() string {
return e.Literal
}

29
vendor/github.com/d5/tengo/compiler/ast/unary_expr.go generated vendored
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@ -1,29 +0,0 @@
package ast
import (
"github.com/d5/tengo/compiler/source"
"github.com/d5/tengo/compiler/token"
)
// UnaryExpr represents an unary operator expression.
type UnaryExpr struct {
Expr Expr
Token token.Token
TokenPos source.Pos
}
func (e *UnaryExpr) exprNode() {}
// Pos returns the position of first character belonging to the node.
func (e *UnaryExpr) Pos() source.Pos {
return e.Expr.Pos()
}
// End returns the position of first character immediately after the node.
func (e *UnaryExpr) End() source.Pos {
return e.Expr.End()
}
func (e *UnaryExpr) String() string {
return "(" + e.Token.String() + e.Expr.String() + ")"
}

24
vendor/github.com/d5/tengo/compiler/ast/undefined_lit.go generated vendored
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@ -1,24 +0,0 @@
package ast
import "github.com/d5/tengo/compiler/source"
// UndefinedLit represents an undefined literal.
type UndefinedLit struct {
TokenPos source.Pos
}
func (e *UndefinedLit) exprNode() {}
// Pos returns the position of first character belonging to the node.
func (e *UndefinedLit) Pos() source.Pos {
return e.TokenPos
}
// End returns the position of first character immediately after the node.
func (e *UndefinedLit) End() source.Pos {
return e.TokenPos + 9 // len(undefined) == 9
}
func (e *UndefinedLit) String() string {
return "undefined"
}

90
vendor/github.com/d5/tengo/compiler/bytecode.go generated vendored
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@ -1,90 +0,0 @@
package compiler
import (
"encoding/gob"
"fmt"
"io"
"reflect"
"github.com/d5/tengo/compiler/source"
"github.com/d5/tengo/objects"
)
// Bytecode is a compiled instructions and constants.
type Bytecode struct {
FileSet *source.FileSet
MainFunction *objects.CompiledFunction
Constants []objects.Object
}
// Encode writes Bytecode data to the writer.
func (b *Bytecode) Encode(w io.Writer) error {
enc := gob.NewEncoder(w)
if err := enc.Encode(b.FileSet); err != nil {
return err
}
if err := enc.Encode(b.MainFunction); err != nil {
return err
}
// constants
return enc.Encode(b.Constants)
}
// CountObjects returns the number of objects found in Constants.
func (b *Bytecode) CountObjects() int {
n := 0
for _, c := range b.Constants {
n += objects.CountObjects(c)
}
return n
}
// FormatInstructions returns human readable string representations of
// compiled instructions.
func (b *Bytecode) FormatInstructions() []string {
return FormatInstructions(b.MainFunction.Instructions, 0)
}
// FormatConstants returns human readable string representations of
// compiled constants.
func (b *Bytecode) FormatConstants() (output []string) {
for cidx, cn := range b.Constants {
switch cn := cn.(type) {
case *objects.CompiledFunction:
output = append(output, fmt.Sprintf("[% 3d] (Compiled Function|%p)", cidx, &cn))
for _, l := range FormatInstructions(cn.Instructions, 0) {
output = append(output, fmt.Sprintf(" %s", l))
}
default:
output = append(output, fmt.Sprintf("[% 3d] %s (%s|%p)", cidx, cn, reflect.TypeOf(cn).Elem().Name(), &cn))
}
}
return
}
func init() {
gob.Register(&source.FileSet{})
gob.Register(&source.File{})
gob.Register(&objects.Array{})
gob.Register(&objects.Bool{})
gob.Register(&objects.Bytes{})
gob.Register(&objects.Char{})
gob.Register(&objects.Closure{})
gob.Register(&objects.CompiledFunction{})
gob.Register(&objects.Error{})
gob.Register(&objects.Float{})
gob.Register(&objects.ImmutableArray{})
gob.Register(&objects.ImmutableMap{})
gob.Register(&objects.Int{})
gob.Register(&objects.Map{})
gob.Register(&objects.String{})
gob.Register(&objects.Time{})
gob.Register(&objects.Undefined{})
gob.Register(&objects.UserFunction{})
}

97
vendor/github.com/d5/tengo/compiler/bytecode_decode.go generated vendored
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@ -1,97 +0,0 @@
package compiler
import (
"encoding/gob"
"fmt"
"io"
"github.com/d5/tengo/objects"
)
// Decode reads Bytecode data from the reader.
func (b *Bytecode) Decode(r io.Reader, modules *objects.ModuleMap) error {
if modules == nil {
modules = objects.NewModuleMap()
}
dec := gob.NewDecoder(r)
if err := dec.Decode(&b.FileSet); err != nil {
return err
}
// TODO: files in b.FileSet.File does not have their 'set' field properly set to b.FileSet
// as it's private field and not serialized by gob encoder/decoder.
if err := dec.Decode(&b.MainFunction); err != nil {
return err
}
if err := dec.Decode(&b.Constants); err != nil {
return err
}
for i, v := range b.Constants {
fv, err := fixDecoded(v, modules)
if err != nil {
return err
}
b.Constants[i] = fv
}
return nil
}
func fixDecoded(o objects.Object, modules *objects.ModuleMap) (objects.Object, error) {
switch o := o.(type) {
case *objects.Bool:
if o.IsFalsy() {
return objects.FalseValue, nil
}
return objects.TrueValue, nil
case *objects.Undefined:
return objects.UndefinedValue, nil
case *objects.Array:
for i, v := range o.Value {
fv, err := fixDecoded(v, modules)
if err != nil {
return nil, err
}
o.Value[i] = fv
}
case *objects.ImmutableArray:
for i, v := range o.Value {
fv, err := fixDecoded(v, modules)
if err != nil {
return nil, err
}
o.Value[i] = fv
}
case *objects.Map:
for k, v := range o.Value {
fv, err := fixDecoded(v, modules)
if err != nil {
return nil, err
}
o.Value[k] = fv
}
case *objects.ImmutableMap:
modName := moduleName(o)
if mod := modules.GetBuiltinModule(modName); mod != nil {
return mod.AsImmutableMap(modName), nil
}
for k, v := range o.Value {
// encoding of user function not supported
if _, isUserFunction := v.(*objects.UserFunction); isUserFunction {
return nil, fmt.Errorf("user function not decodable")
}
fv, err := fixDecoded(v, modules)
if err != nil {
return nil, err
}
o.Value[k] = fv
}
}
return o, nil
}

129
vendor/github.com/d5/tengo/compiler/bytecode_optimize.go generated vendored
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@ -1,129 +0,0 @@
package compiler
import (
"fmt"
"github.com/d5/tengo/objects"
)
// RemoveDuplicates finds and remove the duplicate values in Constants.
// Note this function mutates Bytecode.
func (b *Bytecode) RemoveDuplicates() {
var deduped []objects.Object
indexMap := make(map[int]int) // mapping from old constant index to new index
ints := make(map[int64]int)
strings := make(map[string]int)
floats := make(map[float64]int)
chars := make(map[rune]int)
immutableMaps := make(map[string]int) // for modules
for curIdx, c := range b.Constants {
switch c := c.(type) {
case *objects.CompiledFunction:
// add to deduped list
indexMap[curIdx] = len(deduped)
deduped = append(deduped, c)
case *objects.ImmutableMap:
modName := moduleName(c)
newIdx, ok := immutableMaps[modName]
if modName != "" && ok {
indexMap[curIdx] = newIdx
} else {
newIdx = len(deduped)
immutableMaps[modName] = newIdx
indexMap[curIdx] = newIdx
deduped = append(deduped, c)
}
case *objects.Int:
if newIdx, ok := ints[c.Value]; ok {
indexMap[curIdx] = newIdx
} else {
newIdx = len(deduped)
ints[c.Value] = newIdx
indexMap[curIdx] = newIdx
deduped = append(deduped, c)
}
case *objects.String:
if newIdx, ok := strings[c.Value]; ok {
indexMap[curIdx] = newIdx
} else {
newIdx = len(deduped)
strings[c.Value] = newIdx
indexMap[curIdx] = newIdx
deduped = append(deduped, c)
}
case *objects.Float:
if newIdx, ok := floats[c.Value]; ok {
indexMap[curIdx] = newIdx
} else {
newIdx = len(deduped)
floats[c.Value] = newIdx
indexMap[curIdx] = newIdx
deduped = append(deduped, c)
}
case *objects.Char:
if newIdx, ok := chars[c.Value]; ok {
indexMap[curIdx] = newIdx
} else {
newIdx = len(deduped)
chars[c.Value] = newIdx
indexMap[curIdx] = newIdx
deduped = append(deduped, c)
}
default:
panic(fmt.Errorf("unsupported top-level constant type: %s", c.TypeName()))
}
}
// replace with de-duplicated constants
b.Constants = deduped
// update CONST instructions with new indexes
// main function
updateConstIndexes(b.MainFunction.Instructions, indexMap)
// other compiled functions in constants
for _, c := range b.Constants {
switch c := c.(type) {
case *objects.CompiledFunction:
updateConstIndexes(c.Instructions, indexMap)
}
}
}
func updateConstIndexes(insts []byte, indexMap map[int]int) {
i := 0
for i < len(insts) {
op := insts[i]
numOperands := OpcodeOperands[op]
_, read := ReadOperands(numOperands, insts[i+1:])
switch op {
case OpConstant:
curIdx := int(insts[i+2]) | int(insts[i+1])<<8
newIdx, ok := indexMap[curIdx]
if !ok {
panic(fmt.Errorf("constant index not found: %d", curIdx))
}
copy(insts[i:], MakeInstruction(op, newIdx))
case OpClosure:
curIdx := int(insts[i+2]) | int(insts[i+1])<<8
numFree := int(insts[i+3])
newIdx, ok := indexMap[curIdx]
if !ok {
panic(fmt.Errorf("constant index not found: %d", curIdx))
}
copy(insts[i:], MakeInstruction(op, newIdx, numFree))
}
i += 1 + read
}
}
func moduleName(mod *objects.ImmutableMap) string {
if modName, ok := mod.Value["__module_name__"].(*objects.String); ok {
return modName.Value
}
return ""
}

11
vendor/github.com/d5/tengo/compiler/compilation_scope.go generated vendored
View File

@ -1,11 +0,0 @@
package compiler
import "github.com/d5/tengo/compiler/source"
// CompilationScope represents a compiled instructions
// and the last two instructions that were emitted.
type CompilationScope struct {
instructions []byte
symbolInit map[string]bool
sourceMap map[int]source.Pos
}

846
vendor/github.com/d5/tengo/compiler/compiler.go generated vendored
View File

@ -1,846 +0,0 @@
package compiler
import (
"fmt"
"io"
"io/ioutil"
"path/filepath"
"reflect"
"strings"
"github.com/d5/tengo"
"github.com/d5/tengo/compiler/ast"
"github.com/d5/tengo/compiler/source"
"github.com/d5/tengo/compiler/token"
"github.com/d5/tengo/objects"
)
// Compiler compiles the AST into a bytecode.
type Compiler struct {
file *source.File
parent *Compiler
modulePath string
constants []objects.Object
symbolTable *SymbolTable
scopes []CompilationScope
scopeIndex int
modules *objects.ModuleMap
compiledModules map[string]*objects.CompiledFunction
allowFileImport bool
loops []*Loop
loopIndex int
trace io.Writer
indent int
}
// NewCompiler creates a Compiler.
func NewCompiler(file *source.File, symbolTable *SymbolTable, constants []objects.Object, modules *objects.ModuleMap, trace io.Writer) *Compiler {
mainScope := CompilationScope{
symbolInit: make(map[string]bool),
sourceMap: make(map[int]source.Pos),
}
// symbol table
if symbolTable == nil {
symbolTable = NewSymbolTable()
}
// add builtin functions to the symbol table
for idx, fn := range objects.Builtins {
symbolTable.DefineBuiltin(idx, fn.Name)
}
// builtin modules
if modules == nil {
modules = objects.NewModuleMap()
}
return &Compiler{
file: file,
symbolTable: symbolTable,
constants: constants,
scopes: []CompilationScope{mainScope},
scopeIndex: 0,
loopIndex: -1,
trace: trace,
modules: modules,
compiledModules: make(map[string]*objects.CompiledFunction),
}
}
// Compile compiles the AST node.
func (c *Compiler) Compile(node ast.Node) error {
if c.trace != nil {
if node != nil {
defer un(trace(c, fmt.Sprintf("%s (%s)", node.String(), reflect.TypeOf(node).Elem().Name())))
} else {
defer un(trace(c, "<nil>"))
}
}
switch node := node.(type) {
case *ast.File:
for _, stmt := range node.Stmts {
if err := c.Compile(stmt); err != nil {
return err
}
}
case *ast.ExprStmt:
if err := c.Compile(node.Expr); err != nil {
return err
}
c.emit(node, OpPop)
case *ast.IncDecStmt:
op := token.AddAssign
if node.Token == token.Dec {
op = token.SubAssign
}
return c.compileAssign(node, []ast.Expr{node.Expr}, []ast.Expr{&ast.IntLit{Value: 1}}, op)
case *ast.ParenExpr:
if err := c.Compile(node.Expr); err != nil {
return err
}
case *ast.BinaryExpr:
if node.Token == token.LAnd || node.Token == token.LOr {
return c.compileLogical(node)
}
if node.Token == token.Less {
if err := c.Compile(node.RHS); err != nil {
return err
}
if err := c.Compile(node.LHS); err != nil {
return err
}
c.emit(node, OpBinaryOp, int(token.Greater))
return nil
} else if node.Token == token.LessEq {
if err := c.Compile(node.RHS); err != nil {
return err
}
if err := c.Compile(node.LHS); err != nil {
return err
}
c.emit(node, OpBinaryOp, int(token.GreaterEq))
return nil
}
if err := c.Compile(node.LHS); err != nil {
return err
}
if err := c.Compile(node.RHS); err != nil {
return err
}
switch node.Token {
case token.Add:
c.emit(node, OpBinaryOp, int(token.Add))
case token.Sub:
c.emit(node, OpBinaryOp, int(token.Sub))
case token.Mul:
c.emit(node, OpBinaryOp, int(token.Mul))
case token.Quo:
c.emit(node, OpBinaryOp, int(token.Quo))
case token.Rem:
c.emit(node, OpBinaryOp, int(token.Rem))
case token.Greater:
c.emit(node, OpBinaryOp, int(token.Greater))
case token.GreaterEq:
c.emit(node, OpBinaryOp, int(token.GreaterEq))
case token.Equal:
c.emit(node, OpEqual)
case token.NotEqual:
c.emit(node, OpNotEqual)
case token.And:
c.emit(node, OpBinaryOp, int(token.And))
case token.Or:
c.emit(node, OpBinaryOp, int(token.Or))
case token.Xor:
c.emit(node, OpBinaryOp, int(token.Xor))
case token.AndNot:
c.emit(node, OpBinaryOp, int(token.AndNot))
case token.Shl:
c.emit(node, OpBinaryOp, int(token.Shl))
case token.Shr:
c.emit(node, OpBinaryOp, int(token.Shr))
default:
return c.errorf(node, "invalid binary operator: %s", node.Token.String())
}
case *ast.IntLit:
c.emit(node, OpConstant, c.addConstant(&objects.Int{Value: node.Value}))
case *ast.FloatLit:
c.emit(node, OpConstant, c.addConstant(&objects.Float{Value: node.Value}))
case *ast.BoolLit:
if node.Value {
c.emit(node, OpTrue)
} else {
c.emit(node, OpFalse)
}
case *ast.StringLit:
if len(node.Value) > tengo.MaxStringLen {
return c.error(node, objects.ErrStringLimit)
}
c.emit(node, OpConstant, c.addConstant(&objects.String{Value: node.Value}))
case *ast.CharLit:
c.emit(node, OpConstant, c.addConstant(&objects.Char{Value: node.Value}))
case *ast.UndefinedLit:
c.emit(node, OpNull)
case *ast.UnaryExpr:
if err := c.Compile(node.Expr); err != nil {
return err
}
switch node.Token {
case token.Not:
c.emit(node, OpLNot)
case token.Sub:
c.emit(node, OpMinus)
case token.Xor:
c.emit(node, OpBComplement)
case token.Add:
// do nothing?
default:
return c.errorf(node, "invalid unary operator: %s", node.Token.String())
}
case *ast.IfStmt:
// open new symbol table for the statement
c.symbolTable = c.symbolTable.Fork(true)
defer func() {
c.symbolTable = c.symbolTable.Parent(false)
}()
if node.Init != nil {
if err := c.Compile(node.Init); err != nil {
return err
}
}
if err := c.Compile(node.Cond); err != nil {
return err
}
// first jump placeholder
jumpPos1 := c.emit(node, OpJumpFalsy, 0)
if err := c.Compile(node.Body); err != nil {
return err
}
if node.Else != nil {
// second jump placeholder
jumpPos2 := c.emit(node, OpJump, 0)
// update first jump offset
curPos := len(c.currentInstructions())
c.changeOperand(jumpPos1, curPos)
if err := c.Compile(node.Else); err != nil {
return err
}
// update second jump offset
curPos = len(c.currentInstructions())
c.changeOperand(jumpPos2, curPos)
} else {
// update first jump offset
curPos := len(c.currentInstructions())
c.changeOperand(jumpPos1, curPos)
}
case *ast.ForStmt:
return c.compileForStmt(node)
case *ast.ForInStmt:
return c.compileForInStmt(node)
case *ast.BranchStmt:
if node.Token == token.Break {
curLoop := c.currentLoop()
if curLoop == nil {
return c.errorf(node, "break not allowed outside loop")
}
pos := c.emit(node, OpJump, 0)
curLoop.Breaks = append(curLoop.Breaks, pos)
} else if node.Token == token.Continue {
curLoop := c.currentLoop()
if curLoop == nil {
return c.errorf(node, "continue not allowed outside loop")
}
pos := c.emit(node, OpJump, 0)
curLoop.Continues = append(curLoop.Continues, pos)
} else {
panic(fmt.Errorf("invalid branch statement: %s", node.Token.String()))
}
case *ast.BlockStmt:
if len(node.Stmts) == 0 {
return nil
}
c.symbolTable = c.symbolTable.Fork(true)
defer func() {
c.symbolTable = c.symbolTable.Parent(false)
}()
for _, stmt := range node.Stmts {
if err := c.Compile(stmt); err != nil {
return err
}
}
case *ast.AssignStmt:
if err := c.compileAssign(node, node.LHS, node.RHS, node.Token); err != nil {
return err
}
case *ast.Ident:
symbol, _, ok := c.symbolTable.Resolve(node.Name)
if !ok {
return c.errorf(node, "unresolved reference '%s'", node.Name)
}
switch symbol.Scope {
case ScopeGlobal:
c.emit(node, OpGetGlobal, symbol.Index)
case ScopeLocal:
c.emit(node, OpGetLocal, symbol.Index)
case ScopeBuiltin:
c.emit(node, OpGetBuiltin, symbol.Index)
case ScopeFree:
c.emit(node, OpGetFree, symbol.Index)
}
case *ast.ArrayLit:
for _, elem := range node.Elements {
if err := c.Compile(elem); err != nil {
return err
}
}
c.emit(node, OpArray, len(node.Elements))
case *ast.MapLit:
for _, elt := range node.Elements {
// key
if len(elt.Key) > tengo.MaxStringLen {
return c.error(node, objects.ErrStringLimit)
}
c.emit(node, OpConstant, c.addConstant(&objects.String{Value: elt.Key}))
// value
if err := c.Compile(elt.Value); err != nil {
return err
}
}
c.emit(node, OpMap, len(node.Elements)*2)
case *ast.SelectorExpr: // selector on RHS side
if err := c.Compile(node.Expr); err != nil {
return err
}
if err := c.Compile(node.Sel); err != nil {
return err
}
c.emit(node, OpIndex)
case *ast.IndexExpr:
if err := c.Compile(node.Expr); err != nil {
return err
}
if err := c.Compile(node.Index); err != nil {
return err
}
c.emit(node, OpIndex)
case *ast.SliceExpr:
if err := c.Compile(node.Expr); err != nil {
return err
}
if node.Low != nil {
if err := c.Compile(node.Low); err != nil {
return err
}
} else {
c.emit(node, OpNull)
}
if node.High != nil {
if err := c.Compile(node.High); err != nil {
return err
}
} else {
c.emit(node, OpNull)
}
c.emit(node, OpSliceIndex)
case *ast.FuncLit:
c.enterScope()
for _, p := range node.Type.Params.List {
s := c.symbolTable.Define(p.Name)
// function arguments is not assigned directly.
s.LocalAssigned = true
}
if err := c.Compile(node.Body); err != nil {
return err
}
// code optimization
c.optimizeFunc(node)
freeSymbols := c.symbolTable.FreeSymbols()
numLocals := c.symbolTable.MaxSymbols()
instructions, sourceMap := c.leaveScope()
for _, s := range freeSymbols {
switch s.Scope {
case ScopeLocal:
if !s.LocalAssigned {
// Here, the closure is capturing a local variable that's not yet assigned its value.
// One example is a local recursive function:
//
// func() {
// foo := func(x) {
// // ..
// return foo(x-1)
// }
// }
//
// which translate into
//
// 0000 GETL 0
// 0002 CLOSURE ? 1
// 0006 DEFL 0
//
// . So the local variable (0) is being captured before it's assigned the value.
//
// Solution is to transform the code into something like this:
//
// func() {
// foo := undefined
// foo = func(x) {
// // ..
// return foo(x-1)
// }
// }
//
// that is equivalent to
//
// 0000 NULL
// 0001 DEFL 0
// 0003 GETL 0
// 0005 CLOSURE ? 1
// 0009 SETL 0
//
c.emit(node, OpNull)
c.emit(node, OpDefineLocal, s.Index)
s.LocalAssigned = true
}
c.emit(node, OpGetLocalPtr, s.Index)
case ScopeFree:
c.emit(node, OpGetFreePtr, s.Index)
}
}
compiledFunction := &objects.CompiledFunction{
Instructions: instructions,
NumLocals: numLocals,
NumParameters: len(node.Type.Params.List),
VarArgs: node.Type.Params.VarArgs,
SourceMap: sourceMap,
}
if len(freeSymbols) > 0 {
c.emit(node, OpClosure, c.addConstant(compiledFunction), len(freeSymbols))
} else {
c.emit(node, OpConstant, c.addConstant(compiledFunction))
}
case *ast.ReturnStmt:
if c.symbolTable.Parent(true) == nil {
// outside the function
return c.errorf(node, "return not allowed outside function")
}
if node.Result == nil {
c.emit(node, OpReturn, 0)
} else {
if err := c.Compile(node.Result); err != nil {
return err
}
c.emit(node, OpReturn, 1)
}
case *ast.CallExpr:
if err := c.Compile(node.Func); err != nil {
return err
}
for _, arg := range node.Args {
if err := c.Compile(arg); err != nil {
return err
}
}
c.emit(node, OpCall, len(node.Args))
case *ast.ImportExpr:
if node.ModuleName == "" {
return c.errorf(node, "empty module name")
}
if mod := c.modules.Get(node.ModuleName); mod != nil {
v, err := mod.Import(node.ModuleName)
if err != nil {
return err
}
switch v := v.(type) {
case []byte: // module written in Tengo
compiled, err := c.compileModule(node, node.ModuleName, node.ModuleName, v)
if err != nil {
return err
}
c.emit(node, OpConstant, c.addConstant(compiled))
c.emit(node, OpCall, 0)
case objects.Object: // builtin module
c.emit(node, OpConstant, c.addConstant(v))
default:
panic(fmt.Errorf("invalid import value type: %T", v))
}
} else if c.allowFileImport {
moduleName := node.ModuleName
if !strings.HasSuffix(moduleName, ".tengo") {
moduleName += ".tengo"
}
modulePath, err := filepath.Abs(moduleName)
if err != nil {
return c.errorf(node, "module file path error: %s", err.Error())
}
if err := c.checkCyclicImports(node, modulePath); err != nil {
return err
}
moduleSrc, err := ioutil.ReadFile(moduleName)
if err != nil {
return c.errorf(node, "module file read error: %s", err.Error())
}
compiled, err := c.compileModule(node, moduleName, modulePath, moduleSrc)
if err != nil {
return err
}
c.emit(node, OpConstant, c.addConstant(compiled))
c.emit(node, OpCall, 0)
} else {
return c.errorf(node, "module '%s' not found", node.ModuleName)
}
case *ast.ExportStmt:
// export statement must be in top-level scope
if c.scopeIndex != 0 {
return c.errorf(node, "export not allowed inside function")
}
// export statement is simply ignore when compiling non-module code
if c.parent == nil {
break
}
if err := c.Compile(node.Result); err != nil {
return err
}
c.emit(node, OpImmutable)
c.emit(node, OpReturn, 1)
case *ast.ErrorExpr:
if err := c.Compile(node.Expr); err != nil {
return err
}
c.emit(node, OpError)
case *ast.ImmutableExpr:
if err := c.Compile(node.Expr); err != nil {
return err
}
c.emit(node, OpImmutable)
case *ast.CondExpr:
if err := c.Compile(node.Cond); err != nil {
return err
}
// first jump placeholder
jumpPos1 := c.emit(node, OpJumpFalsy, 0)
if err := c.Compile(node.True); err != nil {
return err
}
// second jump placeholder
jumpPos2 := c.emit(node, OpJump, 0)
// update first jump offset
curPos := len(c.currentInstructions())
c.changeOperand(jumpPos1, curPos)
if err := c.Compile(node.False); err != nil {
return err
}
// update second jump offset
curPos = len(c.currentInstructions())
c.changeOperand(jumpPos2, curPos)
}
return nil
}
// Bytecode returns a compiled bytecode.
func (c *Compiler) Bytecode() *Bytecode {
return &Bytecode{
FileSet: c.file.Set(),
MainFunction: &objects.CompiledFunction{
Instructions: c.currentInstructions(),
SourceMap: c.currentSourceMap(),
},
Constants: c.constants,
}
}
// EnableFileImport enables or disables module loading from local files.
// Local file modules are disabled by default.
func (c *Compiler) EnableFileImport(enable bool) {
c.allowFileImport = enable
}
func (c *Compiler) fork(file *source.File, modulePath string, symbolTable *SymbolTable) *Compiler {
child := NewCompiler(file, symbolTable, nil, c.modules, c.trace)
child.modulePath = modulePath // module file path
child.parent = c // parent to set to current compiler
return child
}
func (c *Compiler) error(node ast.Node, err error) error {
return &Error{
fileSet: c.file.Set(),
node: node,
error: err,
}
}
func (c *Compiler) errorf(node ast.Node, format string, args ...interface{}) error {
return &Error{
fileSet: c.file.Set(),
node: node,
error: fmt.Errorf(format, args...),
}
}
func (c *Compiler) addConstant(o objects.Object) int {
if c.parent != nil {
// module compilers will use their parent's constants array
return c.parent.addConstant(o)
}
c.constants = append(c.constants, o)
if c.trace != nil {
c.printTrace(fmt.Sprintf("CONST %04d %s", len(c.constants)-1, o))
}
return len(c.constants) - 1
}
func (c *Compiler) addInstruction(b []byte) int {
posNewIns := len(c.currentInstructions())
c.scopes[c.scopeIndex].instructions = append(c.currentInstructions(), b...)
return posNewIns
}
func (c *Compiler) replaceInstruction(pos int, inst []byte) {
copy(c.currentInstructions()[pos:], inst)
if c.trace != nil {
c.printTrace(fmt.Sprintf("REPLC %s",
FormatInstructions(c.scopes[c.scopeIndex].instructions[pos:], pos)[0]))
}
}
func (c *Compiler) changeOperand(opPos int, operand ...int) {
op := Opcode(c.currentInstructions()[opPos])
inst := MakeInstruction(op, operand...)
c.replaceInstruction(opPos, inst)
}
// optimizeFunc performs some code-level optimization for the current function instructions
// it removes unreachable (dead code) instructions and adds "returns" instruction if needed.
func (c *Compiler) optimizeFunc(node ast.Node) {
// any instructions between RETURN and the function end
// or instructions between RETURN and jump target position
// are considered as unreachable.
// pass 1. identify all jump destinations
dsts := make(map[int]bool)
iterateInstructions(c.scopes[c.scopeIndex].instructions, func(pos int, opcode Opcode, operands []int) bool {
switch opcode {
case OpJump, OpJumpFalsy, OpAndJump, OpOrJump:
dsts[operands[0]] = true
}
return true
})
var newInsts []byte
// pass 2. eliminate dead code
posMap := make(map[int]int) // old position to new position
var dstIdx int
var deadCode bool
iterateInstructions(c.scopes[c.scopeIndex].instructions, func(pos int, opcode Opcode, operands []int) bool {
switch {
case opcode == OpReturn:
if deadCode {
return true
}
deadCode = true
case dsts[pos]:
dstIdx++
deadCode = false
case deadCode:
return true
}
posMap[pos] = len(newInsts)
newInsts = append(newInsts, MakeInstruction(opcode, operands...)...)
return true
})
// pass 3. update jump positions
var lastOp Opcode
var appendReturn bool
endPos := len(c.scopes[c.scopeIndex].instructions)
iterateInstructions(newInsts, func(pos int, opcode Opcode, operands []int) bool {
switch opcode {
case OpJump, OpJumpFalsy, OpAndJump, OpOrJump:
newDst, ok := posMap[operands[0]]
if ok {
copy(newInsts[pos:], MakeInstruction(opcode, newDst))
} else if endPos == operands[0] {
// there's a jump instruction that jumps to the end of function
// compiler should append "return".
appendReturn = true
} else {
panic(fmt.Errorf("invalid jump position: %d", newDst))
}
}
lastOp = opcode
return true
})
if lastOp != OpReturn {
appendReturn = true
}
// pass 4. update source map
newSourceMap := make(map[int]source.Pos)
for pos, srcPos := range c.scopes[c.scopeIndex].sourceMap {
newPos, ok := posMap[pos]
if ok {
newSourceMap[newPos] = srcPos
}
}
c.scopes[c.scopeIndex].instructions = newInsts
c.scopes[c.scopeIndex].sourceMap = newSourceMap
// append "return"
if appendReturn {
c.emit(node, OpReturn, 0)
}
}
func (c *Compiler) emit(node ast.Node, opcode Opcode, operands ...int) int {
filePos := source.NoPos
if node != nil {
filePos = node.Pos()
}
inst := MakeInstruction(opcode, operands...)
pos := c.addInstruction(inst)
c.scopes[c.scopeIndex].sourceMap[pos] = filePos
if c.trace != nil {
c.printTrace(fmt.Sprintf("EMIT %s",
FormatInstructions(c.scopes[c.scopeIndex].instructions[pos:], pos)[0]))
}
return pos
}
func (c *Compiler) printTrace(a ...interface{}) {
const (
dots = ". . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . "
n = len(dots)
)
i := 2 * c.indent
for i > n {
_, _ = fmt.Fprint(c.trace, dots)
i -= n
}
_, _ = fmt.Fprint(c.trace, dots[0:i])
_, _ = fmt.Fprintln(c.trace, a...)
}
func trace(c *Compiler, msg string) *Compiler {
c.printTrace(msg, "{")
c.indent++
return c
}
func un(c *Compiler) {
c.indent--
c.printTrace("}")
}

133
vendor/github.com/d5/tengo/compiler/compiler_assign.go generated vendored
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@ -1,133 +0,0 @@
package compiler
import (
"fmt"
"github.com/d5/tengo/compiler/ast"
"github.com/d5/tengo/compiler/token"
)
func (c *Compiler) compileAssign(node ast.Node, lhs, rhs []ast.Expr, op token.Token) error {
numLHS, numRHS := len(lhs), len(rhs)
if numLHS > 1 || numRHS > 1 {
return c.errorf(node, "tuple assignment not allowed")
}
// resolve and compile left-hand side
ident, selectors := resolveAssignLHS(lhs[0])
numSel := len(selectors)
if op == token.Define && numSel > 0 {
// using selector on new variable does not make sense
return c.errorf(node, "operator ':=' not allowed with selector")
}
symbol, depth, exists := c.symbolTable.Resolve(ident)
if op == token.Define {
if depth == 0 && exists {
return c.errorf(node, "'%s' redeclared in this block", ident)
}
symbol = c.symbolTable.Define(ident)
} else {
if !exists {
return c.errorf(node, "unresolved reference '%s'", ident)
}
}
// +=, -=, *=, /=
if op != token.Assign && op != token.Define {
if err := c.Compile(lhs[0]); err != nil {
return err
}
}
// compile RHSs
for _, expr := range rhs {
if err := c.Compile(expr); err != nil {
return err
}
}
switch op {
case token.AddAssign:
c.emit(node, OpBinaryOp, int(token.Add))
case token.SubAssign:
c.emit(node, OpBinaryOp, int(token.Sub))
case token.MulAssign:
c.emit(node, OpBinaryOp, int(token.Mul))
case token.QuoAssign:
c.emit(node, OpBinaryOp, int(token.Quo))
case token.RemAssign:
c.emit(node, OpBinaryOp, int(token.Rem))
case token.AndAssign:
c.emit(node, OpBinaryOp, int(token.And))
case token.OrAssign:
c.emit(node, OpBinaryOp, int(token.Or))
case token.AndNotAssign:
c.emit(node, OpBinaryOp, int(token.AndNot))
case token.XorAssign:
c.emit(node, OpBinaryOp, int(token.Xor))
case token.ShlAssign:
c.emit(node, OpBinaryOp, int(token.Shl))
case token.ShrAssign:
c.emit(node, OpBinaryOp, int(token.Shr))
}
// compile selector expressions (right to left)
for i := numSel - 1; i >= 0; i-- {
if err := c.Compile(selectors[i]); err != nil {
return err
}
}
switch symbol.Scope {
case ScopeGlobal:
if numSel > 0 {
c.emit(node, OpSetSelGlobal, symbol.Index, numSel)
} else {
c.emit(node, OpSetGlobal, symbol.Index)
}
case ScopeLocal:
if numSel > 0 {
c.emit(node, OpSetSelLocal, symbol.Index, numSel)
} else {
if op == token.Define && !symbol.LocalAssigned {
c.emit(node, OpDefineLocal, symbol.Index)
} else {
c.emit(node, OpSetLocal, symbol.Index)
}
}
// mark the symbol as local-assigned
symbol.LocalAssigned = true
case ScopeFree:
if numSel > 0 {
c.emit(node, OpSetSelFree, symbol.Index, numSel)
} else {
c.emit(node, OpSetFree, symbol.Index)
}
default:
panic(fmt.Errorf("invalid assignment variable scope: %s", symbol.Scope))
}
return nil
}
func resolveAssignLHS(expr ast.Expr) (name string, selectors []ast.Expr) {
switch term := expr.(type) {
case *ast.SelectorExpr:
name, selectors = resolveAssignLHS(term.Expr)
selectors = append(selectors, term.Sel)
return
case *ast.IndexExpr:
name, selectors = resolveAssignLHS(term.Expr)
selectors = append(selectors, term.Index)
case *ast.Ident:
name = term.Name
}
return
}

181
vendor/github.com/d5/tengo/compiler/compiler_for.go generated vendored
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@ -1,181 +0,0 @@
package compiler
import (
"github.com/d5/tengo/compiler/ast"
)
func (c *Compiler) compileForStmt(stmt *ast.ForStmt) error {
c.symbolTable = c.symbolTable.Fork(true)
defer func() {
c.symbolTable = c.symbolTable.Parent(false)
}()
// init statement
if stmt.Init != nil {
if err := c.Compile(stmt.Init); err != nil {
return err
}
}
// pre-condition position
preCondPos := len(c.currentInstructions())
// condition expression
postCondPos := -1
if stmt.Cond != nil {
if err := c.Compile(stmt.Cond); err != nil {
return err
}
// condition jump position
postCondPos = c.emit(stmt, OpJumpFalsy, 0)
}
// enter loop
loop := c.enterLoop()
// body statement
if err := c.Compile(stmt.Body); err != nil {
c.leaveLoop()
return err
}
c.leaveLoop()
// post-body position
postBodyPos := len(c.currentInstructions())
// post statement
if stmt.Post != nil {
if err := c.Compile(stmt.Post); err != nil {
return err
}
}
// back to condition
c.emit(stmt, OpJump, preCondPos)
// post-statement position
postStmtPos := len(c.currentInstructions())
if postCondPos >= 0 {
c.changeOperand(postCondPos, postStmtPos)
}
// update all break/continue jump positions
for _, pos := range loop.Breaks {
c.changeOperand(pos, postStmtPos)
}
for _, pos := range loop.Continues {
c.changeOperand(pos, postBodyPos)
}
return nil
}
func (c *Compiler) compileForInStmt(stmt *ast.ForInStmt) error {
c.symbolTable = c.symbolTable.Fork(true)
defer func() {
c.symbolTable = c.symbolTable.Parent(false)
}()
// for-in statement is compiled like following:
//
// for :it := iterator(iterable); :it.next(); {
// k, v := :it.get() // DEFINE operator
//
// ... body ...
// }
//
// ":it" is a local variable but will be conflict with other user variables
// because character ":" is not allowed.
// init
// :it = iterator(iterable)
itSymbol := c.symbolTable.Define(":it")
if err := c.Compile(stmt.Iterable); err != nil {
return err
}
c.emit(stmt, OpIteratorInit)
if itSymbol.Scope == ScopeGlobal {
c.emit(stmt, OpSetGlobal, itSymbol.Index)
} else {
c.emit(stmt, OpDefineLocal, itSymbol.Index)
}
// pre-condition position
preCondPos := len(c.currentInstructions())
// condition
// :it.HasMore()
if itSymbol.Scope == ScopeGlobal {
c.emit(stmt, OpGetGlobal, itSymbol.Index)
} else {
c.emit(stmt, OpGetLocal, itSymbol.Index)
}
c.emit(stmt, OpIteratorNext)
// condition jump position
postCondPos := c.emit(stmt, OpJumpFalsy, 0)
// enter loop
loop := c.enterLoop()
// assign key variable
if stmt.Key.Name != "_" {
keySymbol := c.symbolTable.Define(stmt.Key.Name)
if itSymbol.Scope == ScopeGlobal {
c.emit(stmt, OpGetGlobal, itSymbol.Index)
} else {
c.emit(stmt, OpGetLocal, itSymbol.Index)
}
c.emit(stmt, OpIteratorKey)
if keySymbol.Scope == ScopeGlobal {
c.emit(stmt, OpSetGlobal, keySymbol.Index)
} else {
c.emit(stmt, OpDefineLocal, keySymbol.Index)
}
}
// assign value variable
if stmt.Value.Name != "_" {
valueSymbol := c.symbolTable.Define(stmt.Value.Name)
if itSymbol.Scope == ScopeGlobal {
c.emit(stmt, OpGetGlobal, itSymbol.Index)
} else {
c.emit(stmt, OpGetLocal, itSymbol.Index)
}
c.emit(stmt, OpIteratorValue)
if valueSymbol.Scope == ScopeGlobal {
c.emit(stmt, OpSetGlobal, valueSymbol.Index)
} else {
c.emit(stmt, OpDefineLocal, valueSymbol.Index)
}
}
// body statement
if err := c.Compile(stmt.Body); err != nil {
c.leaveLoop()
return err
}
c.leaveLoop()
// post-body position
postBodyPos := len(c.currentInstructions())
// back to condition
c.emit(stmt, OpJump, preCondPos)
// post-statement position
postStmtPos := len(c.currentInstructions())
c.changeOperand(postCondPos, postStmtPos)
// update all break/continue jump positions
for _, pos := range loop.Breaks {
c.changeOperand(pos, postStmtPos)
}
for _, pos := range loop.Continues {
c.changeOperand(pos, postBodyPos)
}
return nil
}

30
vendor/github.com/d5/tengo/compiler/compiler_logical.go generated vendored
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@ -1,30 +0,0 @@
package compiler
import (
"github.com/d5/tengo/compiler/ast"
"github.com/d5/tengo/compiler/token"
)
func (c *Compiler) compileLogical(node *ast.BinaryExpr) error {
// left side term
if err := c.Compile(node.LHS); err != nil {
return err
}
// jump position
var jumpPos int
if node.Token == token.LAnd {
jumpPos = c.emit(node, OpAndJump, 0)
} else {
jumpPos = c.emit(node, OpOrJump, 0)
}
// right side term
if err := c.Compile(node.RHS); err != nil {
return err
}
c.changeOperand(jumpPos, len(c.currentInstructions()))
return nil
}

31
vendor/github.com/d5/tengo/compiler/compiler_loops.go generated vendored
View File

@ -1,31 +0,0 @@
package compiler
func (c *Compiler) enterLoop() *Loop {
loop := &Loop{}
c.loops = append(c.loops, loop)
c.loopIndex++
if c.trace != nil {
c.printTrace("LOOPE", c.loopIndex)
}
return loop
}
func (c *Compiler) leaveLoop() {
if c.trace != nil {
c.printTrace("LOOPL", c.loopIndex)
}
c.loops = c.loops[:len(c.loops)-1]
c.loopIndex--
}
func (c *Compiler) currentLoop() *Loop {
if c.loopIndex >= 0 {
return c.loops[c.loopIndex]
}
return nil
}

79
vendor/github.com/d5/tengo/compiler/compiler_module.go generated vendored
View File

@ -1,79 +0,0 @@
package compiler
import (
"github.com/d5/tengo/compiler/ast"
"github.com/d5/tengo/compiler/parser"
"github.com/d5/tengo/objects"
)
func (c *Compiler) checkCyclicImports(node ast.Node, modulePath string) error {
if c.modulePath == modulePath {
return c.errorf(node, "cyclic module import: %s", modulePath)
} else if c.parent != nil {
return c.parent.checkCyclicImports(node, modulePath)
}
return nil
}
func (c *Compiler) compileModule(node ast.Node, moduleName, modulePath string, src []byte) (*objects.CompiledFunction, error) {
if err := c.checkCyclicImports(node, modulePath); err != nil {
return nil, err
}
compiledModule, exists := c.loadCompiledModule(modulePath)
if exists {
return compiledModule, nil
}
modFile := c.file.Set().AddFile(moduleName, -1, len(src))
p := parser.NewParser(modFile, src, nil)
file, err := p.ParseFile()
if err != nil {
return nil, err
}
symbolTable := NewSymbolTable()
// inherit builtin functions
for _, sym := range c.symbolTable.BuiltinSymbols() {
symbolTable.DefineBuiltin(sym.Index, sym.Name)
}
// no global scope for the module
symbolTable = symbolTable.Fork(false)
// compile module
moduleCompiler := c.fork(modFile, modulePath, symbolTable)
if err := moduleCompiler.Compile(file); err != nil {
return nil, err
}
// code optimization
moduleCompiler.optimizeFunc(node)
compiledFunc := moduleCompiler.Bytecode().MainFunction
compiledFunc.NumLocals = symbolTable.MaxSymbols()
c.storeCompiledModule(modulePath, compiledFunc)
return compiledFunc, nil
}
func (c *Compiler) loadCompiledModule(modulePath string) (mod *objects.CompiledFunction, ok bool) {
if c.parent != nil {
return c.parent.loadCompiledModule(modulePath)
}
mod, ok = c.compiledModules[modulePath]
return
}
func (c *Compiler) storeCompiledModule(modulePath string, module *objects.CompiledFunction) {
if c.parent != nil {
c.parent.storeCompiledModule(modulePath, module)
}
c.compiledModules[modulePath] = module
}

43
vendor/github.com/d5/tengo/compiler/compiler_scopes.go generated vendored
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@ -1,43 +0,0 @@
package compiler
import "github.com/d5/tengo/compiler/source"
func (c *Compiler) currentInstructions() []byte {
return c.scopes[c.scopeIndex].instructions
}
func (c *Compiler) currentSourceMap() map[int]source.Pos {
return c.scopes[c.scopeIndex].sourceMap
}
func (c *Compiler) enterScope() {
scope := CompilationScope{
symbolInit: make(map[string]bool),
sourceMap: make(map[int]source.Pos),
}
c.scopes = append(c.scopes, scope)
c.scopeIndex++
c.symbolTable = c.symbolTable.Fork(false)
if c.trace != nil {
c.printTrace("SCOPE", c.scopeIndex)
}
}
func (c *Compiler) leaveScope() (instructions []byte, sourceMap map[int]source.Pos) {
instructions = c.currentInstructions()
sourceMap = c.currentSourceMap()
c.scopes = c.scopes[:len(c.scopes)-1]
c.scopeIndex--
c.symbolTable = c.symbolTable.Parent(true)
if c.trace != nil {
c.printTrace("SCOPL", c.scopeIndex)
}
return
}

8
vendor/github.com/d5/tengo/compiler/emitted_instruction.go generated vendored
View File

@ -1,8 +0,0 @@
package compiler
// EmittedInstruction represents an opcode
// with its emitted position.
type EmittedInstruction struct {
Opcode Opcode
Position int
}

20
vendor/github.com/d5/tengo/compiler/error.go generated vendored
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@ -1,20 +0,0 @@
package compiler
import (
"fmt"
"github.com/d5/tengo/compiler/ast"
"github.com/d5/tengo/compiler/source"
)
// Error represents a compiler error.
type Error struct {
fileSet *source.FileSet
node ast.Node
error error
}
func (e *Error) Error() string {
filePos := e.fileSet.Position(e.node.Pos())
return fmt.Sprintf("Compile Error: %s\n\tat %s", e.error.Error(), filePos)
}

72
vendor/github.com/d5/tengo/compiler/instructions.go generated vendored
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@ -1,72 +0,0 @@
package compiler
import (
"fmt"
)
// MakeInstruction returns a bytecode for an opcode and the operands.
func MakeInstruction(opcode Opcode, operands ...int) []byte {
numOperands := OpcodeOperands[opcode]
totalLen := 1
for _, w := range numOperands {
totalLen += w
}
instruction := make([]byte, totalLen)
instruction[0] = byte(opcode)
offset := 1
for i, o := range operands {
width := numOperands[i]
switch width {
case 1:
instruction[offset] = byte(o)
case 2:
n := uint16(o)
instruction[offset] = byte(n >> 8)
instruction[offset+1] = byte(n)
}
offset += width
}
return instruction
}
// FormatInstructions returns string representation of
// bytecode instructions.
func FormatInstructions(b []byte, posOffset int) []string {
var out []string
i := 0
for i < len(b) {
numOperands := OpcodeOperands[Opcode(b[i])]
operands, read := ReadOperands(numOperands, b[i+1:])
switch len(numOperands) {
case 0:
out = append(out, fmt.Sprintf("%04d %-7s", posOffset+i, OpcodeNames[Opcode(b[i])]))
case 1:
out = append(out, fmt.Sprintf("%04d %-7s %-5d", posOffset+i, OpcodeNames[Opcode(b[i])], operands[0]))
case 2:
out = append(out, fmt.Sprintf("%04d %-7s %-5d %-5d", posOffset+i, OpcodeNames[Opcode(b[i])], operands[0], operands[1]))
}
i += 1 + read
}
return out
}
func iterateInstructions(b []byte, fn func(pos int, opcode Opcode, operands []int) bool) {
for i := 0; i < len(b); i++ {
numOperands := OpcodeOperands[Opcode(b[i])]
operands, read := ReadOperands(numOperands, b[i+1:])
if !fn(i, b[i], operands) {
break
}
i += read
}
}

8
vendor/github.com/d5/tengo/compiler/loop.go generated vendored
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@ -1,8 +0,0 @@
package compiler
// Loop represents a loop construct that
// the compiler uses to track the current loop.
type Loop struct {
Continues []int
Breaks []int
}

4
vendor/github.com/d5/tengo/compiler/module_loader.go generated vendored
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@ -1,4 +0,0 @@
package compiler
// ModuleLoader should take a module name and return the module data.
type ModuleLoader func(moduleName string) ([]byte, error)

21
vendor/github.com/d5/tengo/compiler/parser/error.go generated vendored
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@ -1,21 +0,0 @@
package parser
import (
"fmt"
"github.com/d5/tengo/compiler/source"
)
// Error represents a parser error.
type Error struct {
Pos source.FilePos
Msg string
}
func (e Error) Error() string {
if e.Pos.Filename != "" || e.Pos.IsValid() {
return fmt.Sprintf("Parse Error: %s\n\tat %s", e.Msg, e.Pos)
}
return fmt.Sprintf("Parse Error: %s", e.Msg)
}

68
vendor/github.com/d5/tengo/compiler/parser/error_list.go generated vendored
View File

@ -1,68 +0,0 @@
package parser
import (
"fmt"
"sort"
"github.com/d5/tengo/compiler/source"
)
// ErrorList is a collection of parser errors.
type ErrorList []*Error
// Add adds a new parser error to the collection.
func (p *ErrorList) Add(pos source.FilePos, msg string) {
*p = append(*p, &Error{pos, msg})
}
// Len returns the number of elements in the collection.
func (p ErrorList) Len() int {
return len(p)
}
func (p ErrorList) Swap(i, j int) {
p[i], p[j] = p[j], p[i]
}
func (p ErrorList) Less(i, j int) bool {
e := &p[i].Pos
f := &p[j].Pos
if e.Filename != f.Filename {
return e.Filename < f.Filename
}
if e.Line != f.Line {
return e.Line < f.Line
}
if e.Column != f.Column {
return e.Column < f.Column
}
return p[i].Msg < p[j].Msg
}
// Sort sorts the collection.
func (p ErrorList) Sort() {
sort.Sort(p)
}
func (p ErrorList) Error() string {
switch len(p) {
case 0:
return "no errors"
case 1:
return p[0].Error()
}
return fmt.Sprintf("%s (and %d more errors)", p[0], len(p)-1)
}
// Err returns an error.
func (p ErrorList) Err() error {
if len(p) == 0 {
return nil
}
return p
}

17
vendor/github.com/d5/tengo/compiler/parser/parse_source.go generated vendored
View File

@ -1,17 +0,0 @@
package parser
import (
"io"
"github.com/d5/tengo/compiler/ast"
"github.com/d5/tengo/compiler/source"
)
// ParseSource parses source code 'src' and builds an AST.
func ParseSource(filename string, src []byte, trace io.Writer) (res *ast.File, err error) {
fileSet := source.NewFileSet()
file := fileSet.AddFile(filename, -1, len(src))
p := NewParser(file, src, trace)
return p.ParseFile()
}

12
vendor/github.com/d5/tengo/compiler/parser/sync.go generated vendored
View File

@ -1,12 +0,0 @@
package parser
import "github.com/d5/tengo/compiler/token"
var stmtStart = map[token.Token]bool{
token.Break: true,
token.Continue: true,
token.For: true,
token.If: true,
token.Return: true,
token.Export: true,
}

6
vendor/github.com/d5/tengo/compiler/scanner/error_handler.go generated vendored
View File

@ -1,6 +0,0 @@
package scanner
import "github.com/d5/tengo/compiler/source"
// ErrorHandler is an error handler for the scanner.
type ErrorHandler func(pos source.FilePos, msg string)

10
vendor/github.com/d5/tengo/compiler/scanner/mode.go generated vendored
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@ -1,10 +0,0 @@
package scanner
// Mode represents a scanner mode.
type Mode int
// List of scanner modes.
const (
ScanComments Mode = 1 << iota
DontInsertSemis
)

110
vendor/github.com/d5/tengo/compiler/source/file.go generated vendored
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@ -1,110 +0,0 @@
package source
// File represents a source file.
type File struct {
// File set for the file
set *FileSet
// File name as provided to AddFile
Name string
// Pos value range for this file is [base...base+size]
Base int
// File size as provided to AddFile
Size int
// Lines contains the offset of the first character for each line (the first entry is always 0)
Lines []int
}
// Set returns FileSet.
func (f *File) Set() *FileSet {
return f.set
}
// LineCount returns the current number of lines.
func (f *File) LineCount() int {
return len(f.Lines)
}
// AddLine adds a new line.
func (f *File) AddLine(offset int) {
if i := len(f.Lines); (i == 0 || f.Lines[i-1] < offset) && offset < f.Size {
f.Lines = append(f.Lines, offset)
}
}
// LineStart returns the position of the first character in the line.
func (f *File) LineStart(line int) Pos {
if line < 1 {
panic("illegal line number (line numbering starts at 1)")
}
if line > len(f.Lines) {
panic("illegal line number")
}
return Pos(f.Base + f.Lines[line-1])
}
// FileSetPos returns the position in the file set.
func (f *File) FileSetPos(offset int) Pos {
if offset > f.Size {
panic("illegal file offset")
}
return Pos(f.Base + offset)
}
// Offset translates the file set position into the file offset.
func (f *File) Offset(p Pos) int {
if int(p) < f.Base || int(p) > f.Base+f.Size {
panic("illegal Pos value")
}
return int(p) - f.Base
}
// Position translates the file set position into the file position.
func (f *File) Position(p Pos) (pos FilePos) {
if p != NoPos {
if int(p) < f.Base || int(p) > f.Base+f.Size {
panic("illegal Pos value")
}
pos = f.position(p)
}
return
}
func (f *File) position(p Pos) (pos FilePos) {
offset := int(p) - f.Base
pos.Offset = offset
pos.Filename, pos.Line, pos.Column = f.unpack(offset)
return
}
func (f *File) unpack(offset int) (filename string, line, column int) {
filename = f.Name
if i := searchInts(f.Lines, offset); i >= 0 {
line, column = i+1, offset-f.Lines[i]+1
}
return
}
func searchInts(a []int, x int) int {
// This function body is a manually inlined version of:
// return sort.Search(len(a), func(i int) bool { return a[i] > x }) - 1
i, j := 0, len(a)
for i < j {
h := i + (j-i)/2 // avoid overflow when computing h
// i ≤ h < j
if a[h] <= x {
i = h + 1
} else {
j = h
}
}
return i - 1
}

47
vendor/github.com/d5/tengo/compiler/source/file_pos.go generated vendored
View File

@ -1,47 +0,0 @@
package source
import "fmt"
// FilePos represents a position information in the file.
type FilePos struct {
Filename string // filename, if any
Offset int // offset, starting at 0
Line int // line number, starting at 1
Column int // column number, starting at 1 (byte count)
}
// IsValid returns true if the position is valid.
func (p FilePos) IsValid() bool {
return p.Line > 0
}
// String returns a string in one of several forms:
//
// file:line:column valid position with file name
// file:line valid position with file name but no column (column == 0)
// line:column valid position without file name
// line valid position without file name and no column (column == 0)
// file invalid position with file name
// - invalid position without file name
//
func (p FilePos) String() string {
s := p.Filename
if p.IsValid() {
if s != "" {
s += ":"
}
s += fmt.Sprintf("%d", p.Line)
if p.Column != 0 {
s += fmt.Sprintf(":%d", p.Column)
}
}
if s == "" {
s = "-"
}
return s
}

96
vendor/github.com/d5/tengo/compiler/source/file_set.go generated vendored
View File

@ -1,96 +0,0 @@
package source
import (
"sort"
)
// FileSet represents a set of source files.
type FileSet struct {
Base int // base offset for the next file
Files []*File // list of files in the order added to the set
LastFile *File // cache of last file looked up
}
// NewFileSet creates a new file set.
func NewFileSet() *FileSet {
return &FileSet{
Base: 1, // 0 == NoPos
}
}
// AddFile adds a new file in the file set.
func (s *FileSet) AddFile(filename string, base, size int) *File {
if base < 0 {
base = s.Base
}
if base < s.Base || size < 0 {
panic("illegal base or size")
}
f := &File{
set: s,
Name: filename,
Base: base,
Size: size,
Lines: []int{0},
}
base += size + 1 // +1 because EOF also has a position
if base < 0 {
panic("offset overflow (> 2G of source code in file set)")
}
// add the file to the file set
s.Base = base
s.Files = append(s.Files, f)
s.LastFile = f
return f
}
// File returns the file that contains the position p.
// If no such file is found (for instance for p == NoPos),
// the result is nil.
//
func (s *FileSet) File(p Pos) (f *File) {
if p != NoPos {
f = s.file(p)
}
return
}
// Position converts a Pos p in the fileset into a FilePos value.
func (s *FileSet) Position(p Pos) (pos FilePos) {
if p != NoPos {
if f := s.file(p); f != nil {
return f.position(p)
}
}
return
}
func (s *FileSet) file(p Pos) *File {
// common case: p is in last file
if f := s.LastFile; f != nil && f.Base <= int(p) && int(p) <= f.Base+f.Size {
return f
}
// p is not in last file - search all files
if i := searchFiles(s.Files, int(p)); i >= 0 {
f := s.Files[i]
// f.base <= int(p) by definition of searchFiles
if int(p) <= f.Base+f.Size {
s.LastFile = f // race is ok - s.last is only a cache
return f
}
}
return nil
}
func searchFiles(a []*File, x int) int {
return sort.Search(len(a), func(i int) bool { return a[i].Base > x }) - 1
}

9
vendor/github.com/d5/tengo/compiler/symbol.go generated vendored
View File

@ -1,9 +0,0 @@
package compiler
// Symbol represents a symbol in the symbol table.
type Symbol struct {
Name string
Scope SymbolScope
Index int
LocalAssigned bool // if the local symbol is assigned at least once
}

12
vendor/github.com/d5/tengo/compiler/symbol_scopes.go generated vendored
View File

@ -1,12 +0,0 @@
package compiler
// SymbolScope represents a symbol scope.
type SymbolScope string
// List of symbol scopes
const (
ScopeGlobal SymbolScope = "GLOBAL"
ScopeLocal SymbolScope = "LOCAL"
ScopeBuiltin SymbolScope = "BUILTIN"
ScopeFree SymbolScope = "FREE"
)

19
vendor/github.com/d5/tengo/compiler/token/keywords.go generated vendored
View File

@ -1,19 +0,0 @@
package token
var keywords map[string]Token
func init() {
keywords = make(map[string]Token)
for i := _keywordBeg + 1; i < _keywordEnd; i++ {
keywords[tokens[i]] = i
}
}
// Lookup returns corresponding keyword if ident is a keyword.
func Lookup(ident string) Token {
if tok, isKeyword := keywords[ident]; isKeyword {
return tok
}
return Ident
}

3
vendor/github.com/d5/tengo/go.mod generated vendored
View File

@ -1,3 +0,0 @@
module github.com/d5/tengo
go 1.12

130
vendor/github.com/d5/tengo/objects/array.go generated vendored
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@ -1,130 +0,0 @@
package objects
import (
"fmt"
"strings"
"github.com/d5/tengo/compiler/token"
)
// Array represents an array of objects.
type Array struct {
Value []Object
}
// TypeName returns the name of the type.
func (o *Array) TypeName() string {
return "array"
}
func (o *Array) String() string {
var elements []string
for _, e := range o.Value {
elements = append(elements, e.String())
}
return fmt.Sprintf("[%s]", strings.Join(elements, ", "))
}
// BinaryOp returns another object that is the result of
// a given binary operator and a right-hand side object.
func (o *Array) BinaryOp(op token.Token, rhs Object) (Object, error) {
if rhs, ok := rhs.(*Array); ok {
switch op {
case token.Add:
if len(rhs.Value) == 0 {
return o, nil
}
return &Array{Value: append(o.Value, rhs.Value...)}, nil
}
}
return nil, ErrInvalidOperator
}
// Copy returns a copy of the type.
func (o *Array) Copy() Object {
var c []Object
for _, elem := range o.Value {
c = append(c, elem.Copy())
}
return &Array{Value: c}
}
// IsFalsy returns true if the value of the type is falsy.
func (o *Array) IsFalsy() bool {
return len(o.Value) == 0
}
// Equals returns true if the value of the type
// is equal to the value of another object.
func (o *Array) Equals(x Object) bool {
var xVal []Object
switch x := x.(type) {
case *Array:
xVal = x.Value
case *ImmutableArray:
xVal = x.Value
default:
return false
}
if len(o.Value) != len(xVal) {
return false
}
for i, e := range o.Value {
if !e.Equals(xVal[i]) {
return false
}
}
return true
}
// IndexGet returns an element at a given index.
func (o *Array) IndexGet(index Object) (res Object, err error) {
intIdx, ok := index.(*Int)
if !ok {
err = ErrInvalidIndexType
return
}
idxVal := int(intIdx.Value)
if idxVal < 0 || idxVal >= len(o.Value) {
res = UndefinedValue
return
}
res = o.Value[idxVal]
return
}
// IndexSet sets an element at a given index.
func (o *Array) IndexSet(index, value Object) (err error) {
intIdx, ok := ToInt(index)
if !ok {
err = ErrInvalidIndexType
return
}
if intIdx < 0 || intIdx >= len(o.Value) {
err = ErrIndexOutOfBounds
return
}
o.Value[intIdx] = value
return nil
}
// Iterate creates an array iterator.
func (o *Array) Iterate() Iterator {
return &ArrayIterator{
v: o.Value,
l: len(o.Value),
}
}

57
vendor/github.com/d5/tengo/objects/array_iterator.go generated vendored
View File

@ -1,57 +0,0 @@
package objects
import "github.com/d5/tengo/compiler/token"
// ArrayIterator is an iterator for an array.
type ArrayIterator struct {
v []Object
i int
l int
}
// TypeName returns the name of the type.
func (i *ArrayIterator) TypeName() string {
return "array-iterator"
}
func (i *ArrayIterator) String() string {
return "<array-iterator>"
}
// BinaryOp returns another object that is the result of
// a given binary operator and a right-hand side object.
func (i *ArrayIterator) BinaryOp(op token.Token, rhs Object) (Object, error) {
return nil, ErrInvalidOperator
}
// IsFalsy returns true if the value of the type is falsy.
func (i *ArrayIterator) IsFalsy() bool {
return true
}
// Equals returns true if the value of the type
// is equal to the value of another object.
func (i *ArrayIterator) Equals(Object) bool {
return false
}
// Copy returns a copy of the type.
func (i *ArrayIterator) Copy() Object {
return &ArrayIterator{v: i.v, i: i.i, l: i.l}
}
// Next returns true if there are more elements to iterate.
func (i *ArrayIterator) Next() bool {
i.i++
return i.i <= i.l
}
// Key returns the key or index value of the current element.
func (i *ArrayIterator) Key() Object {
return &Int{Value: int64(i.i - 1)}
}
// Value returns the value of the current element.
func (i *ArrayIterator) Value() Object {
return i.v[i.i-1]
}

64
vendor/github.com/d5/tengo/objects/bool.go generated vendored
View File

@ -1,64 +0,0 @@
package objects
import (
"github.com/d5/tengo/compiler/token"
)
// Bool represents a boolean value.
type Bool struct {
// this is intentionally non-public to force using objects.TrueValue and FalseValue always
value bool
}
func (o *Bool) String() string {
if o.value {
return "true"
}
return "false"
}
// TypeName returns the name of the type.
func (o *Bool) TypeName() string {
return "bool"
}
// BinaryOp returns another object that is the result of
// a given binary operator and a right-hand side object.
func (o *Bool) BinaryOp(op token.Token, rhs Object) (Object, error) {
return nil, ErrInvalidOperator
}
// Copy returns a copy of the type.
func (o *Bool) Copy() Object {
return o
}
// IsFalsy returns true if the value of the type is falsy.
func (o *Bool) IsFalsy() bool {
return !o.value
}
// Equals returns true if the value of the type
// is equal to the value of another object.
func (o *Bool) Equals(x Object) bool {
return o == x
}
// GobDecode decodes bool value from input bytes.
func (o *Bool) GobDecode(b []byte) (err error) {
o.value = b[0] == 1
return
}
// GobEncode encodes bool values into bytes.
func (o *Bool) GobEncode() (b []byte, err error) {
if o.value {
b = []byte{1}
} else {
b = []byte{0}
}
return
}

21
vendor/github.com/d5/tengo/objects/builtin_append.go generated vendored
View File

@ -1,21 +0,0 @@
package objects
// append(arr, items...)
func builtinAppend(args ...Object) (Object, error) {
if len(args) < 2 {
return nil, ErrWrongNumArguments
}
switch arg := args[0].(type) {
case *Array:
return &Array{Value: append(arg.Value, args[1:]...)}, nil
case *ImmutableArray:
return &Array{Value: append(arg.Value, args[1:]...)}, nil
default:
return nil, ErrInvalidArgumentType{
Name: "first",
Expected: "array",
Found: arg.TypeName(),
}
}
}

169
vendor/github.com/d5/tengo/objects/builtin_convert.go generated vendored
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@ -1,169 +0,0 @@
package objects
import "github.com/d5/tengo"
func builtinString(args ...Object) (Object, error) {
argsLen := len(args)
if !(argsLen == 1 || argsLen == 2) {
return nil, ErrWrongNumArguments
}
if _, ok := args[0].(*String); ok {
return args[0], nil
}
v, ok := ToString(args[0])
if ok {
if len(v) > tengo.MaxStringLen {
return nil, ErrStringLimit
}
return &String{Value: v}, nil
}
if argsLen == 2 {
return args[1], nil
}
return UndefinedValue, nil
}
func builtinInt(args ...Object) (Object, error) {
argsLen := len(args)
if !(argsLen == 1 || argsLen == 2) {
return nil, ErrWrongNumArguments
}
if _, ok := args[0].(*Int); ok {
return args[0], nil
}
v, ok := ToInt64(args[0])
if ok {
return &Int{Value: v}, nil
}
if argsLen == 2 {
return args[1], nil
}
return UndefinedValue, nil
}
func builtinFloat(args ...Object) (Object, error) {
argsLen := len(args)
if !(argsLen == 1 || argsLen == 2) {
return nil, ErrWrongNumArguments
}
if _, ok := args[0].(*Float); ok {
return args[0], nil
}
v, ok := ToFloat64(args[0])
if ok {
return &Float{Value: v}, nil
}
if argsLen == 2 {
return args[1], nil
}
return UndefinedValue, nil
}
func builtinBool(args ...Object) (Object, error) {
if len(args) != 1 {
return nil, ErrWrongNumArguments
}
if _, ok := args[0].(*Bool); ok {
return args[0], nil
}
v, ok := ToBool(args[0])
if ok {
if v {
return TrueValue, nil
}
return FalseValue, nil
}
return UndefinedValue, nil
}
func builtinChar(args ...Object) (Object, error) {
argsLen := len(args)
if !(argsLen == 1 || argsLen == 2) {
return nil, ErrWrongNumArguments
}
if _, ok := args[0].(*Char); ok {
return args[0], nil
}
v, ok := ToRune(args[0])
if ok {
return &Char{Value: v}, nil
}
if argsLen == 2 {
return args[1], nil
}
return UndefinedValue, nil
}
func builtinBytes(args ...Object) (Object, error) {
argsLen := len(args)
if !(argsLen == 1 || argsLen == 2) {
return nil, ErrWrongNumArguments
}
// bytes(N) => create a new bytes with given size N
if n, ok := args[0].(*Int); ok {
if n.Value > int64(tengo.MaxBytesLen) {
return nil, ErrBytesLimit
}
return &Bytes{Value: make([]byte, int(n.Value))}, nil
}
v, ok := ToByteSlice(args[0])
if ok {
if len(v) > tengo.MaxBytesLen {
return nil, ErrBytesLimit
}
return &Bytes{Value: v}, nil
}
if argsLen == 2 {
return args[1], nil
}
return UndefinedValue, nil
}
func builtinTime(args ...Object) (Object, error) {
argsLen := len(args)
if !(argsLen == 1 || argsLen == 2) {
return nil, ErrWrongNumArguments
}
if _, ok := args[0].(*Time); ok {
return args[0], nil
}
v, ok := ToTime(args[0])
if ok {
return &Time{Value: v}, nil
}
if argsLen == 2 {
return args[1], nil
}
return UndefinedValue, nil
}

9
vendor/github.com/d5/tengo/objects/builtin_copy.go generated vendored
View File

@ -1,9 +0,0 @@
package objects
func builtinCopy(args ...Object) (Object, error) {
if len(args) != 1 {
return nil, ErrWrongNumArguments
}
return args[0].Copy(), nil
}

27
vendor/github.com/d5/tengo/objects/builtin_format.go generated vendored
View File

@ -1,27 +0,0 @@
package objects
func builtinFormat(args ...Object) (Object, error) {
numArgs := len(args)
if numArgs == 0 {
return nil, ErrWrongNumArguments
}
format, ok := args[0].(*String)
if !ok {
return nil, ErrInvalidArgumentType{
Name: "format",
Expected: "string",
Found: args[0].TypeName(),
}
}
if numArgs == 1 {
return format, nil // okay to return 'format' directly as String is immutable
}
s, err := Format(format.Value, args[1:]...)
if err != nil {
return nil, err
}
return &String{Value: s}, nil
}

47
vendor/github.com/d5/tengo/objects/builtin_function.go generated vendored
View File

@ -1,47 +0,0 @@
package objects
import (
"github.com/d5/tengo/compiler/token"
)
// BuiltinFunction represents a builtin function.
type BuiltinFunction struct {
Name string
Value CallableFunc
}
// TypeName returns the name of the type.
func (o *BuiltinFunction) TypeName() string {
return "builtin-function:" + o.Name
}
func (o *BuiltinFunction) String() string {
return "<builtin-function>"
}
// BinaryOp returns another object that is the result of
// a given binary operator and a right-hand side object.
func (o *BuiltinFunction) BinaryOp(op token.Token, rhs Object) (Object, error) {
return nil, ErrInvalidOperator
}
// Copy returns a copy of the type.
func (o *BuiltinFunction) Copy() Object {
return &BuiltinFunction{Value: o.Value}
}
// IsFalsy returns true if the value of the type is falsy.
func (o *BuiltinFunction) IsFalsy() bool {
return false
}
// Equals returns true if the value of the type
// is equal to the value of another object.
func (o *BuiltinFunction) Equals(x Object) bool {
return false
}
// Call executes a builtin function.
func (o *BuiltinFunction) Call(args ...Object) (Object, error) {
return o.Value(args...)
}

29
vendor/github.com/d5/tengo/objects/builtin_len.go generated vendored
View File

@ -1,29 +0,0 @@
package objects
// len(obj object) => int
func builtinLen(args ...Object) (Object, error) {
if len(args) != 1 {
return nil, ErrWrongNumArguments
}
switch arg := args[0].(type) {
case *Array:
return &Int{Value: int64(len(arg.Value))}, nil
case *ImmutableArray:
return &Int{Value: int64(len(arg.Value))}, nil
case *String:
return &Int{Value: int64(len(arg.Value))}, nil
case *Bytes:
return &Int{Value: int64(len(arg.Value))}, nil
case *Map:
return &Int{Value: int64(len(arg.Value))}, nil
case *ImmutableMap:
return &Int{Value: int64(len(arg.Value))}, nil
default:
return nil, ErrInvalidArgumentType{
Name: "first",
Expected: "array/string/bytes/map",
Found: arg.TypeName(),
}
}
}

23
vendor/github.com/d5/tengo/objects/builtin_module.go generated vendored
View File

@ -1,23 +0,0 @@
package objects
// BuiltinModule is an importable module that's written in Go.
type BuiltinModule struct {
Attrs map[string]Object
}
// Import returns an immutable map for the module.
func (m *BuiltinModule) Import(moduleName string) (interface{}, error) {
return m.AsImmutableMap(moduleName), nil
}
// AsImmutableMap converts builtin module into an immutable map.
func (m *BuiltinModule) AsImmutableMap(moduleName string) *ImmutableMap {
attrs := make(map[string]Object, len(m.Attrs))
for k, v := range m.Attrs {
attrs[k] = v.Copy()
}
attrs["__module_name__"] = &String{Value: moduleName}
return &ImmutableMap{Value: attrs}
}

9
vendor/github.com/d5/tengo/objects/builtin_type.go generated vendored
View File

@ -1,9 +0,0 @@
package objects
func builtinTypeName(args ...Object) (Object, error) {
if len(args) != 1 {
return nil, ErrWrongNumArguments
}
return &String{Value: args[0].TypeName()}, nil
}

195
vendor/github.com/d5/tengo/objects/builtin_type_checks.go generated vendored
View File

@ -1,195 +0,0 @@
package objects
func builtinIsString(args ...Object) (Object, error) {
if len(args) != 1 {
return nil, ErrWrongNumArguments
}
if _, ok := args[0].(*String); ok {
return TrueValue, nil
}
return FalseValue, nil
}
func builtinIsInt(args ...Object) (Object, error) {
if len(args) != 1 {
return nil, ErrWrongNumArguments
}
if _, ok := args[0].(*Int); ok {
return TrueValue, nil
}
return FalseValue, nil
}
func builtinIsFloat(args ...Object) (Object, error) {
if len(args) != 1 {
return nil, ErrWrongNumArguments
}
if _, ok := args[0].(*Float); ok {
return TrueValue, nil
}
return FalseValue, nil
}
func builtinIsBool(args ...Object) (Object, error) {
if len(args) != 1 {
return nil, ErrWrongNumArguments
}
if _, ok := args[0].(*Bool); ok {
return TrueValue, nil
}
return FalseValue, nil
}
func builtinIsChar(args ...Object) (Object, error) {
if len(args) != 1 {
return nil, ErrWrongNumArguments
}
if _, ok := args[0].(*Char); ok {
return TrueValue, nil
}
return FalseValue, nil
}
func builtinIsBytes(args ...Object) (Object, error) {
if len(args) != 1 {
return nil, ErrWrongNumArguments
}
if _, ok := args[0].(*Bytes); ok {
return TrueValue, nil
}
return FalseValue, nil
}
func builtinIsArray(args ...Object) (Object, error) {
if len(args) != 1 {
return nil, ErrWrongNumArguments
}
if _, ok := args[0].(*Array); ok {
return TrueValue, nil
}
return FalseValue, nil
}
func builtinIsImmutableArray(args ...Object) (Object, error) {
if len(args) != 1 {
return nil, ErrWrongNumArguments
}
if _, ok := args[0].(*ImmutableArray); ok {
return TrueValue, nil
}
return FalseValue, nil
}
func builtinIsMap(args ...Object) (Object, error) {
if len(args) != 1 {
return nil, ErrWrongNumArguments
}
if _, ok := args[0].(*Map); ok {
return TrueValue, nil
}
return FalseValue, nil
}
func builtinIsImmutableMap(args ...Object) (Object, error) {
if len(args) != 1 {
return nil, ErrWrongNumArguments
}
if _, ok := args[0].(*ImmutableMap); ok {
return TrueValue, nil
}
return FalseValue, nil
}
func builtinIsTime(args ...Object) (Object, error) {
if len(args) != 1 {
return nil, ErrWrongNumArguments
}
if _, ok := args[0].(*Time); ok {
return TrueValue, nil
}
return FalseValue, nil
}
func builtinIsError(args ...Object) (Object, error) {
if len(args) != 1 {
return nil, ErrWrongNumArguments
}
if _, ok := args[0].(*Error); ok {
return TrueValue, nil
}
return FalseValue, nil
}
func builtinIsUndefined(args ...Object) (Object, error) {
if len(args) != 1 {
return nil, ErrWrongNumArguments
}
if args[0] == UndefinedValue {
return TrueValue, nil
}
return FalseValue, nil
}
func builtinIsFunction(args ...Object) (Object, error) {
if len(args) != 1 {
return nil, ErrWrongNumArguments
}
switch args[0].(type) {
case *CompiledFunction, *Closure:
return TrueValue, nil
}
return FalseValue, nil
}
func builtinIsCallable(args ...Object) (Object, error) {
if len(args) != 1 {
return nil, ErrWrongNumArguments
}
switch args[0].(type) {
case *CompiledFunction, *Closure, Callable: // BuiltinFunction is Callable
return TrueValue, nil
}
return FalseValue, nil
}
func builtinIsIterable(args ...Object) (Object, error) {
if len(args) != 1 {
return nil, ErrWrongNumArguments
}
if _, ok := args[0].(Iterable); ok {
return TrueValue, nil
}
return FalseValue, nil
}

118
vendor/github.com/d5/tengo/objects/builtins.go generated vendored
View File

@ -1,118 +0,0 @@
package objects
// Builtins contains all default builtin functions.
// Use GetBuiltinFunctions instead of accessing Builtins directly.
var Builtins = []*BuiltinFunction{
{
Name: "len",
Value: builtinLen,
},
{
Name: "copy",
Value: builtinCopy,
},
{
Name: "append",
Value: builtinAppend,
},
{
Name: "string",
Value: builtinString,
},
{
Name: "int",
Value: builtinInt,
},
{
Name: "bool",
Value: builtinBool,
},
{
Name: "float",
Value: builtinFloat,
},
{
Name: "char",
Value: builtinChar,
},
{
Name: "bytes",
Value: builtinBytes,
},
{
Name: "time",
Value: builtinTime,
},
{
Name: "is_int",
Value: builtinIsInt,
},
{
Name: "is_float",
Value: builtinIsFloat,
},
{
Name: "is_string",
Value: builtinIsString,
},
{
Name: "is_bool",
Value: builtinIsBool,
},
{
Name: "is_char",
Value: builtinIsChar,
},
{
Name: "is_bytes",
Value: builtinIsBytes,
},
{
Name: "is_array",
Value: builtinIsArray,
},
{
Name: "is_immutable_array",
Value: builtinIsImmutableArray,
},
{
Name: "is_map",
Value: builtinIsMap,
},
{
Name: "is_immutable_map",
Value: builtinIsImmutableMap,
},
{
Name: "is_iterable",
Value: builtinIsIterable,
},
{
Name: "is_time",
Value: builtinIsTime,
},
{
Name: "is_error",
Value: builtinIsError,
},
{
Name: "is_undefined",
Value: builtinIsUndefined,
},
{
Name: "is_function",
Value: builtinIsFunction,
},
{
Name: "is_callable",
Value: builtinIsCallable,
},
{
Name: "type_name",
Value: builtinTypeName,
},
{
Name: "format",
Value: builtinFormat,
},
}

89
vendor/github.com/d5/tengo/objects/bytes.go generated vendored
View File

@ -1,89 +0,0 @@
package objects
import (
"bytes"
"github.com/d5/tengo"
"github.com/d5/tengo/compiler/token"
)
// Bytes represents a byte array.
type Bytes struct {
Value []byte
}
func (o *Bytes) String() string {
return string(o.Value)
}
// TypeName returns the name of the type.
func (o *Bytes) TypeName() string {
return "bytes"
}
// BinaryOp returns another object that is the result of
// a given binary operator and a right-hand side object.
func (o *Bytes) BinaryOp(op token.Token, rhs Object) (Object, error) {
switch op {
case token.Add:
switch rhs := rhs.(type) {
case *Bytes:
if len(o.Value)+len(rhs.Value) > tengo.MaxBytesLen {
return nil, ErrBytesLimit
}
return &Bytes{Value: append(o.Value, rhs.Value...)}, nil
}
}
return nil, ErrInvalidOperator
}
// Copy returns a copy of the type.
func (o *Bytes) Copy() Object {
return &Bytes{Value: append([]byte{}, o.Value...)}
}
// IsFalsy returns true if the value of the type is falsy.
func (o *Bytes) IsFalsy() bool {
return len(o.Value) == 0
}
// Equals returns true if the value of the type
// is equal to the value of another object.
func (o *Bytes) Equals(x Object) bool {
t, ok := x.(*Bytes)
if !ok {
return false
}
return bytes.Equal(o.Value, t.Value)
}
// IndexGet returns an element (as Int) at a given index.
func (o *Bytes) IndexGet(index Object) (res Object, err error) {
intIdx, ok := index.(*Int)
if !ok {
err = ErrInvalidIndexType
return
}
idxVal := int(intIdx.Value)
if idxVal < 0 || idxVal >= len(o.Value) {
res = UndefinedValue
return
}
res = &Int{Value: int64(o.Value[idxVal])}
return
}
// Iterate creates a bytes iterator.
func (o *Bytes) Iterate() Iterator {
return &BytesIterator{
v: o.Value,
l: len(o.Value),
}
}

57
vendor/github.com/d5/tengo/objects/bytes_iterator.go generated vendored
View File

@ -1,57 +0,0 @@
package objects
import "github.com/d5/tengo/compiler/token"
// BytesIterator represents an iterator for a string.
type BytesIterator struct {
v []byte
i int
l int
}
// TypeName returns the name of the type.
func (i *BytesIterator) TypeName() string {
return "bytes-iterator"
}
func (i *BytesIterator) String() string {
return "<bytes-iterator>"
}
// BinaryOp returns another object that is the result of
// a given binary operator and a right-hand side object.
func (i *BytesIterator) BinaryOp(op token.Token, rhs Object) (Object, error) {
return nil, ErrInvalidOperator
}
// IsFalsy returns true if the value of the type is falsy.
func (i *BytesIterator) IsFalsy() bool {
return true
}
// Equals returns true if the value of the type
// is equal to the value of another object.
func (i *BytesIterator) Equals(Object) bool {
return false
}
// Copy returns a copy of the type.
func (i *BytesIterator) Copy() Object {
return &BytesIterator{v: i.v, i: i.i, l: i.l}
}
// Next returns true if there are more elements to iterate.
func (i *BytesIterator) Next() bool {
i.i++
return i.i <= i.l
}
// Key returns the key or index value of the current element.
func (i *BytesIterator) Key() Object {
return &Int{Value: int64(i.i - 1)}
}
// Value returns the value of the current element.
func (i *BytesIterator) Value() Object {
return &Int{Value: int64(i.v[i.i-1])}
}

9
vendor/github.com/d5/tengo/objects/callable.go generated vendored
View File

@ -1,9 +0,0 @@
package objects
// Callable represents an object that can be called like a function.
type Callable interface {
// Call should take an arbitrary number of arguments
// and returns a return value and/or an error,
// which the VM will consider as a run-time error.
Call(args ...Object) (ret Object, err error)
}

4
vendor/github.com/d5/tengo/objects/callable_func.go generated vendored
View File

@ -1,4 +0,0 @@
package objects
// CallableFunc is a function signature for the callable functions.
type CallableFunc = func(args ...Object) (ret Object, err error)

119
vendor/github.com/d5/tengo/objects/char.go generated vendored
View File

@ -1,119 +0,0 @@
package objects
import (
"github.com/d5/tengo/compiler/token"
)
// Char represents a character value.
type Char struct {
Value rune
}
func (o *Char) String() string {
return string(o.Value)
}
// TypeName returns the name of the type.
func (o *Char) TypeName() string {
return "char"
}
// BinaryOp returns another object that is the result of
// a given binary operator and a right-hand side object.
func (o *Char) BinaryOp(op token.Token, rhs Object) (Object, error) {
switch rhs := rhs.(type) {
case *Char:
switch op {
case token.Add:
r := o.Value + rhs.Value
if r == o.Value {
return o, nil
}
return &Char{Value: r}, nil
case token.Sub:
r := o.Value - rhs.Value
if r == o.Value {
return o, nil
}
return &Char{Value: r}, nil
case token.Less:
if o.Value < rhs.Value {
return TrueValue, nil
}
return FalseValue, nil
case token.Greater:
if o.Value > rhs.Value {
return TrueValue, nil
}
return FalseValue, nil
case token.LessEq:
if o.Value <= rhs.Value {
return TrueValue, nil
}
return FalseValue, nil
case token.GreaterEq:
if o.Value >= rhs.Value {
return TrueValue, nil
}
return FalseValue, nil
}
case *Int:
switch op {
case token.Add:
r := o.Value + rune(rhs.Value)
if r == o.Value {
return o, nil
}
return &Char{Value: r}, nil
case token.Sub:
r := o.Value - rune(rhs.Value)
if r == o.Value {
return o, nil
}
return &Char{Value: r}, nil
case token.Less:
if int64(o.Value) < rhs.Value {
return TrueValue, nil
}
return FalseValue, nil
case token.Greater:
if int64(o.Value) > rhs.Value {
return TrueValue, nil
}
return FalseValue, nil
case token.LessEq:
if int64(o.Value) <= rhs.Value {
return TrueValue, nil
}
return FalseValue, nil
case token.GreaterEq:
if int64(o.Value) >= rhs.Value {
return TrueValue, nil
}
return FalseValue, nil
}
}
return nil, ErrInvalidOperator
}
// Copy returns a copy of the type.
func (o *Char) Copy() Object {
return &Char{Value: o.Value}
}
// IsFalsy returns true if the value of the type is falsy.
func (o *Char) IsFalsy() bool {
return o.Value == 0
}
// Equals returns true if the value of the type
// is equal to the value of another object.
func (o *Char) Equals(x Object) bool {
t, ok := x.(*Char)
if !ok {
return false
}
return o.Value == t.Value
}

45
vendor/github.com/d5/tengo/objects/closure.go generated vendored
View File

@ -1,45 +0,0 @@
package objects
import (
"github.com/d5/tengo/compiler/token"
)
// Closure represents a function closure.
type Closure struct {
Fn *CompiledFunction
Free []*ObjectPtr
}
// TypeName returns the name of the type.
func (o *Closure) TypeName() string {
return "closure"
}
func (o *Closure) String() string {
return "<closure>"
}
// BinaryOp returns another object that is the result of
// a given binary operator and a right-hand side object.
func (o *Closure) BinaryOp(op token.Token, rhs Object) (Object, error) {
return nil, ErrInvalidOperator
}
// Copy returns a copy of the type.
func (o *Closure) Copy() Object {
return &Closure{
Fn: o.Fn.Copy().(*CompiledFunction),
Free: append([]*ObjectPtr{}, o.Free...), // DO NOT Copy() of elements; these are variable pointers
}
}
// IsFalsy returns true if the value of the type is falsy.
func (o *Closure) IsFalsy() bool {
return false
}
// Equals returns true if the value of the type
// is equal to the value of another object.
func (o *Closure) Equals(x Object) bool {
return false
}

62
vendor/github.com/d5/tengo/objects/compiled_function.go generated vendored
View File

@ -1,62 +0,0 @@
package objects
import (
"github.com/d5/tengo/compiler/source"
"github.com/d5/tengo/compiler/token"
)
// CompiledFunction represents a compiled function.
type CompiledFunction struct {
Instructions []byte
NumLocals int // number of local variables (including function parameters)
NumParameters int
VarArgs bool
SourceMap map[int]source.Pos
}
// TypeName returns the name of the type.
func (o *CompiledFunction) TypeName() string {
return "compiled-function"
}
func (o *CompiledFunction) String() string {
return "<compiled-function>"
}
// BinaryOp returns another object that is the result of
// a given binary operator and a right-hand side object.
func (o *CompiledFunction) BinaryOp(op token.Token, rhs Object) (Object, error) {
return nil, ErrInvalidOperator
}
// Copy returns a copy of the type.
func (o *CompiledFunction) Copy() Object {
return &CompiledFunction{
Instructions: append([]byte{}, o.Instructions...),
NumLocals: o.NumLocals,
NumParameters: o.NumParameters,
VarArgs: o.VarArgs,
}
}
// IsFalsy returns true if the value of the type is falsy.
func (o *CompiledFunction) IsFalsy() bool {
return false
}
// Equals returns true if the value of the type
// is equal to the value of another object.
func (o *CompiledFunction) Equals(x Object) bool {
return false
}
// SourcePos returns the source position of the instruction at ip.
func (o *CompiledFunction) SourcePos(ip int) source.Pos {
for ip >= 0 {
if p, ok := o.SourceMap[ip]; ok {
return p
}
ip--
}
return source.NoPos
}

31
vendor/github.com/d5/tengo/objects/count_objects.go generated vendored
View File

@ -1,31 +0,0 @@
package objects
// CountObjects returns the number of objects that a given object o contains.
// For scalar value types, it will always be 1. For compound value types,
// this will include its elements and all of their elements recursively.
func CountObjects(o Object) (c int) {
c = 1
switch o := o.(type) {
case *Array:
for _, v := range o.Value {
c += CountObjects(v)
}
case *ImmutableArray:
for _, v := range o.Value {
c += CountObjects(v)
}
case *Map:
for _, v := range o.Value {
c += CountObjects(v)
}
case *ImmutableMap:
for _, v := range o.Value {
c += CountObjects(v)
}
case *Error:
c += CountObjects(o.Value)
}
return
}

47
vendor/github.com/d5/tengo/objects/error.go generated vendored
View File

@ -1,47 +0,0 @@
package objects
import (
"fmt"
"github.com/d5/tengo/compiler/token"
)
// Error represents a string value.
type Error struct {
Value Object
}
// TypeName returns the name of the type.
func (o *Error) TypeName() string {
return "error"
}
func (o *Error) String() string {
if o.Value != nil {
return fmt.Sprintf("error: %s", o.Value.String())
}
return "error"
}
// BinaryOp returns another object that is the result of
// a given binary operator and a right-hand side object.
func (o *Error) BinaryOp(op token.Token, rhs Object) (Object, error) {
return nil, ErrInvalidOperator
}
// IsFalsy returns true if the value of the type is falsy.
func (o *Error) IsFalsy() bool {
return true // error is always false.
}
// Copy returns a copy of the type.
func (o *Error) Copy() Object {
return &Error{Value: o.Value.Copy()}
}
// Equals returns true if the value of the type
// is equal to the value of another object.
func (o *Error) Equals(x Object) bool {
return o == x // pointer equality
}

38
vendor/github.com/d5/tengo/objects/errors.go generated vendored
View File

@ -1,38 +0,0 @@
package objects
import (
"errors"
"fmt"
)
// ErrIndexOutOfBounds is an error where a given index is out of the bounds.
var ErrIndexOutOfBounds = errors.New("index out of bounds")
// ErrInvalidIndexType represents an invalid index type.
var ErrInvalidIndexType = errors.New("invalid index type")
// ErrInvalidIndexValueType represents an invalid index value type.
var ErrInvalidIndexValueType = errors.New("invalid index value type")
// ErrInvalidOperator represents an error for invalid operator usage.
var ErrInvalidOperator = errors.New("invalid operator")
// ErrWrongNumArguments represents a wrong number of arguments error.
var ErrWrongNumArguments = errors.New("wrong number of arguments")
// ErrBytesLimit represents an error where the size of bytes value exceeds the limit.
var ErrBytesLimit = errors.New("exceeding bytes size limit")
// ErrStringLimit represents an error where the size of string value exceeds the limit.
var ErrStringLimit = errors.New("exceeding string size limit")
// ErrInvalidArgumentType represents an invalid argument value type error.
type ErrInvalidArgumentType struct {
Name string
Expected string
Found string
}
func (e ErrInvalidArgumentType) Error() string {
return fmt.Sprintf("invalid type for argument '%s': expected %s, found %s", e.Name, e.Expected, e.Found)
}

146
vendor/github.com/d5/tengo/objects/float.go generated vendored
View File

@ -1,146 +0,0 @@
package objects
import (
"math"
"strconv"
"github.com/d5/tengo/compiler/token"
)
// Float represents a floating point number value.
type Float struct {
Value float64
}
func (o *Float) String() string {
return strconv.FormatFloat(o.Value, 'f', -1, 64)
}
// TypeName returns the name of the type.
func (o *Float) TypeName() string {
return "float"
}
// BinaryOp returns another object that is the result of
// a given binary operator and a right-hand side object.
func (o *Float) BinaryOp(op token.Token, rhs Object) (Object, error) {
switch rhs := rhs.(type) {
case *Float:
switch op {
case token.Add:
r := o.Value + rhs.Value
if r == o.Value {
return o, nil
}
return &Float{Value: r}, nil
case token.Sub:
r := o.Value - rhs.Value
if r == o.Value {
return o, nil
}
return &Float{Value: r}, nil
case token.Mul:
r := o.Value * rhs.Value
if r == o.Value {
return o, nil
}
return &Float{Value: r}, nil
case token.Quo:
r := o.Value / rhs.Value
if r == o.Value {
return o, nil
}
return &Float{Value: r}, nil
case token.Less:
if o.Value < rhs.Value {
return TrueValue, nil
}
return FalseValue, nil
case token.Greater:
if o.Value > rhs.Value {
return TrueValue, nil
}
return FalseValue, nil
case token.LessEq:
if o.Value <= rhs.Value {
return TrueValue, nil
}
return FalseValue, nil
case token.GreaterEq:
if o.Value >= rhs.Value {
return TrueValue, nil
}
return FalseValue, nil
}
case *Int:
switch op {
case token.Add:
r := o.Value + float64(rhs.Value)
if r == o.Value {
return o, nil
}
return &Float{Value: r}, nil
case token.Sub:
r := o.Value - float64(rhs.Value)
if r == o.Value {
return o, nil
}
return &Float{Value: r}, nil
case token.Mul:
r := o.Value * float64(rhs.Value)
if r == o.Value {
return o, nil
}
return &Float{Value: r}, nil
case token.Quo:
r := o.Value / float64(rhs.Value)
if r == o.Value {
return o, nil
}
return &Float{Value: r}, nil
case token.Less:
if o.Value < float64(rhs.Value) {
return TrueValue, nil
}
return FalseValue, nil
case token.Greater:
if o.Value > float64(rhs.Value) {
return TrueValue, nil
}
return FalseValue, nil
case token.LessEq:
if o.Value <= float64(rhs.Value) {
return TrueValue, nil
}
return FalseValue, nil
case token.GreaterEq:
if o.Value >= float64(rhs.Value) {
return TrueValue, nil
}
return FalseValue, nil
}
}
return nil, ErrInvalidOperator
}
// Copy returns a copy of the type.
func (o *Float) Copy() Object {
return &Float{Value: o.Value}
}
// IsFalsy returns true if the value of the type is falsy.
func (o *Float) IsFalsy() bool {
return math.IsNaN(o.Value)
}
// Equals returns true if the value of the type
// is equal to the value of another object.
func (o *Float) Equals(x Object) bool {
t, ok := x.(*Float)
if !ok {
return false
}
return o.Value == t.Value
}

109
vendor/github.com/d5/tengo/objects/immutable_array.go generated vendored
View File

@ -1,109 +0,0 @@
package objects
import (
"fmt"
"strings"
"github.com/d5/tengo/compiler/token"
)
// ImmutableArray represents an immutable array of objects.
type ImmutableArray struct {
Value []Object
}
// TypeName returns the name of the type.
func (o *ImmutableArray) TypeName() string {
return "immutable-array"
}
func (o *ImmutableArray) String() string {
var elements []string
for _, e := range o.Value {
elements = append(elements, e.String())
}
return fmt.Sprintf("[%s]", strings.Join(elements, ", "))
}
// BinaryOp returns another object that is the result of
// a given binary operator and a right-hand side object.
func (o *ImmutableArray) BinaryOp(op token.Token, rhs Object) (Object, error) {
if rhs, ok := rhs.(*ImmutableArray); ok {
switch op {
case token.Add:
return &Array{Value: append(o.Value, rhs.Value...)}, nil
}
}
return nil, ErrInvalidOperator
}
// Copy returns a copy of the type.
func (o *ImmutableArray) Copy() Object {
var c []Object
for _, elem := range o.Value {
c = append(c, elem.Copy())
}
return &Array{Value: c}
}
// IsFalsy returns true if the value of the type is falsy.
func (o *ImmutableArray) IsFalsy() bool {
return len(o.Value) == 0
}
// Equals returns true if the value of the type
// is equal to the value of another object.
func (o *ImmutableArray) Equals(x Object) bool {
var xVal []Object
switch x := x.(type) {
case *Array:
xVal = x.Value
case *ImmutableArray:
xVal = x.Value
default:
return false
}
if len(o.Value) != len(xVal) {
return false
}
for i, e := range o.Value {
if !e.Equals(xVal[i]) {
return false
}
}
return true
}
// IndexGet returns an element at a given index.
func (o *ImmutableArray) IndexGet(index Object) (res Object, err error) {
intIdx, ok := index.(*Int)
if !ok {
err = ErrInvalidIndexType
return
}
idxVal := int(intIdx.Value)
if idxVal < 0 || idxVal >= len(o.Value) {
res = UndefinedValue
return
}
res = o.Value[idxVal]
return
}
// Iterate creates an array iterator.
func (o *ImmutableArray) Iterate() Iterator {
return &ArrayIterator{
v: o.Value,
l: len(o.Value),
}
}

105
vendor/github.com/d5/tengo/objects/immutable_map.go generated vendored
View File

@ -1,105 +0,0 @@
package objects
import (
"fmt"
"strings"
"github.com/d5/tengo/compiler/token"
)
// ImmutableMap represents an immutable map object.
type ImmutableMap struct {
Value map[string]Object
}
// TypeName returns the name of the type.
func (o *ImmutableMap) TypeName() string {
return "immutable-map"
}
func (o *ImmutableMap) String() string {
var pairs []string
for k, v := range o.Value {
pairs = append(pairs, fmt.Sprintf("%s: %s", k, v.String()))
}
return fmt.Sprintf("{%s}", strings.Join(pairs, ", "))
}
// BinaryOp returns another object that is the result of
// a given binary operator and a right-hand side object.
func (o *ImmutableMap) BinaryOp(op token.Token, rhs Object) (Object, error) {
return nil, ErrInvalidOperator
}
// Copy returns a copy of the type.
func (o *ImmutableMap) Copy() Object {
c := make(map[string]Object)
for k, v := range o.Value {
c[k] = v.Copy()
}
return &Map{Value: c}
}
// IsFalsy returns true if the value of the type is falsy.
func (o *ImmutableMap) IsFalsy() bool {
return len(o.Value) == 0
}
// IndexGet returns the value for the given key.
func (o *ImmutableMap) IndexGet(index Object) (res Object, err error) {
strIdx, ok := ToString(index)
if !ok {
err = ErrInvalidIndexType
return
}
val, ok := o.Value[strIdx]
if !ok {
val = UndefinedValue
}
return val, nil
}
// Equals returns true if the value of the type
// is equal to the value of another object.
func (o *ImmutableMap) Equals(x Object) bool {
var xVal map[string]Object
switch x := x.(type) {
case *Map:
xVal = x.Value
case *ImmutableMap:
xVal = x.Value
default:
return false
}
if len(o.Value) != len(xVal) {
return false
}
for k, v := range o.Value {
tv := xVal[k]
if !v.Equals(tv) {
return false
}
}
return true
}
// Iterate creates an immutable map iterator.
func (o *ImmutableMap) Iterate() Iterator {
var keys []string
for k := range o.Value {
keys = append(keys, k)
}
return &MapIterator{
v: o.Value,
k: keys,
l: len(keys),
}
}

7
vendor/github.com/d5/tengo/objects/importable.go generated vendored
View File

@ -1,7 +0,0 @@
package objects
// Importable interface represents importable module instance.
type Importable interface {
// Import should return either an Object or module source code ([]byte).
Import(moduleName string) (interface{}, error)
}

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