vm: use BinWriter instead of Buffered version
In the future we could reuse emit interface without buf better
This commit is contained in:
Vsevolod Brekelov
parent
f5e2401984
commit
b08387efdb
2 changed files with 104 additions and 104 deletions
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@ -64,17 +64,17 @@ func (c *codegen) emitLoadConst(t types.TypeAndValue) {
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switch typ.Kind() {
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case types.Int, types.UntypedInt, types.Uint:
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val, _ := constant.Int64Val(t.Value)
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emitInt(c.prog, val)
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emitInt(c.prog.BinWriter, val)
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case types.String, types.UntypedString:
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val := constant.StringVal(t.Value)
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emitString(c.prog, val)
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emitString(c.prog.BinWriter, val)
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case types.Bool, types.UntypedBool:
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val := constant.BoolVal(t.Value)
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emitBool(c.prog, val)
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emitBool(c.prog.BinWriter, val)
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case types.Byte:
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val, _ := constant.Int64Val(t.Value)
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b := byte(val)
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emitBytes(c.prog, []byte{b})
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emitBytes(c.prog.BinWriter, []byte{b})
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default:
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c.prog.Err = fmt.Errorf("compiler doesn't know how to convert this basic type: %v", t)
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return
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@ -95,34 +95,34 @@ func (c *codegen) emitLoadLocal(name string) {
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}
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func (c *codegen) emitLoadLocalPos(pos int) {
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emitOpcode(c.prog, vm.DUPFROMALTSTACK)
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emitInt(c.prog, int64(pos))
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emitOpcode(c.prog, vm.PICKITEM)
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emitOpcode(c.prog.BinWriter, vm.DUPFROMALTSTACK)
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emitInt(c.prog.BinWriter, int64(pos))
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emitOpcode(c.prog.BinWriter, vm.PICKITEM)
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}
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func (c *codegen) emitStoreLocal(pos int) {
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emitOpcode(c.prog, vm.DUPFROMALTSTACK)
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emitOpcode(c.prog.BinWriter, vm.DUPFROMALTSTACK)
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if pos < 0 {
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c.prog.Err = fmt.Errorf("invalid position to store local: %d", pos)
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return
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}
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emitInt(c.prog, int64(pos))
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emitInt(c.prog, 2)
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emitOpcode(c.prog, vm.ROLL)
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emitOpcode(c.prog, vm.SETITEM)
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emitInt(c.prog.BinWriter, int64(pos))
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emitInt(c.prog.BinWriter, 2)
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emitOpcode(c.prog.BinWriter, vm.ROLL)
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emitOpcode(c.prog.BinWriter, vm.SETITEM)
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}
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func (c *codegen) emitLoadField(i int) {
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emitInt(c.prog, int64(i))
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emitOpcode(c.prog, vm.PICKITEM)
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emitInt(c.prog.BinWriter, int64(i))
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emitOpcode(c.prog.BinWriter, vm.PICKITEM)
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}
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func (c *codegen) emitStoreStructField(i int) {
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emitInt(c.prog, int64(i))
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emitOpcode(c.prog, vm.ROT)
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emitOpcode(c.prog, vm.SETITEM)
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emitInt(c.prog.BinWriter, int64(i))
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emitOpcode(c.prog.BinWriter, vm.ROT)
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emitOpcode(c.prog.BinWriter, vm.SETITEM)
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}
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// convertGlobals traverses the AST and only converts global declarations.
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@ -162,9 +162,9 @@ func (c *codegen) convertFuncDecl(file ast.Node, decl *ast.FuncDecl) {
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// All globals copied into the scope of the function need to be added
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// to the stack size of the function.
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emitInt(c.prog, f.stackSize()+countGlobals(file))
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emitOpcode(c.prog, vm.NEWARRAY)
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emitOpcode(c.prog, vm.TOALTSTACK)
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emitInt(c.prog.BinWriter, f.stackSize()+countGlobals(file))
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emitOpcode(c.prog.BinWriter, vm.NEWARRAY)
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emitOpcode(c.prog.BinWriter, vm.TOALTSTACK)
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// We need to handle methods, which in Go, is just syntactic sugar.
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// The method receiver will be passed in as first argument.
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@ -202,9 +202,9 @@ func (c *codegen) convertFuncDecl(file ast.Node, decl *ast.FuncDecl) {
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// If this function returns the void (no return stmt) we will cleanup its junk on the stack.
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if !hasReturnStmt(decl) {
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emitOpcode(c.prog, vm.FROMALTSTACK)
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emitOpcode(c.prog, vm.DROP)
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emitOpcode(c.prog, vm.RET)
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emitOpcode(c.prog.BinWriter, vm.FROMALTSTACK)
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emitOpcode(c.prog.BinWriter, vm.DROP)
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emitOpcode(c.prog.BinWriter, vm.RET)
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}
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}
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@ -295,9 +295,9 @@ func (c *codegen) Visit(node ast.Node) ast.Visitor {
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ast.Walk(c, n.Results[0])
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}
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emitOpcode(c.prog, vm.FROMALTSTACK)
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emitOpcode(c.prog, vm.DROP) // Cleanup the stack.
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emitOpcode(c.prog, vm.RET)
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emitOpcode(c.prog.BinWriter, vm.FROMALTSTACK)
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emitOpcode(c.prog.BinWriter, vm.DROP) // Cleanup the stack.
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emitOpcode(c.prog.BinWriter, vm.RET)
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return nil
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case *ast.IfStmt:
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@ -307,13 +307,13 @@ func (c *codegen) Visit(node ast.Node) ast.Visitor {
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if n.Cond != nil {
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ast.Walk(c, n.Cond)
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emitJmp(c.prog, vm.JMPIFNOT, int16(lElse))
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emitJmp(c.prog.BinWriter, vm.JMPIFNOT, int16(lElse))
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}
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c.setLabel(lIf)
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ast.Walk(c, n.Body)
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if n.Else != nil {
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emitJmp(c.prog, vm.JMP, int16(lElseEnd))
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emitJmp(c.prog.BinWriter, vm.JMP, int16(lElseEnd))
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}
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c.setLabel(lElse)
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@ -358,8 +358,8 @@ func (c *codegen) Visit(node ast.Node) ast.Visitor {
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for i := ln - 1; i >= 0; i-- {
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c.emitLoadConst(c.typeInfo.Types[n.Elts[i]])
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}
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emitInt(c.prog, int64(ln))
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emitOpcode(c.prog, vm.PACK)
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emitInt(c.prog.BinWriter, int64(ln))
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emitOpcode(c.prog.BinWriter, vm.PACK)
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return nil
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}
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@ -374,13 +374,13 @@ func (c *codegen) Visit(node ast.Node) ast.Visitor {
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switch n.Op {
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case token.LAND:
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ast.Walk(c, n.X)
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emitJmp(c.prog, vm.JMPIFNOT, int16(len(c.l)-1))
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emitJmp(c.prog.BinWriter, vm.JMPIFNOT, int16(len(c.l)-1))
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ast.Walk(c, n.Y)
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return nil
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case token.LOR:
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ast.Walk(c, n.X)
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emitJmp(c.prog, vm.JMPIF, int16(len(c.l)-3))
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emitJmp(c.prog.BinWriter, vm.JMPIF, int16(len(c.l)-3))
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ast.Walk(c, n.Y)
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return nil
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@ -405,24 +405,24 @@ func (c *codegen) Visit(node ast.Node) ast.Visitor {
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case n.Op == token.ADD:
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// VM has separate opcodes for number and string concatenation
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if isStringType(tinfo.Type) {
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emitOpcode(c.prog, vm.CAT)
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emitOpcode(c.prog.BinWriter, vm.CAT)
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} else {
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emitOpcode(c.prog, vm.ADD)
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emitOpcode(c.prog.BinWriter, vm.ADD)
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}
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case n.Op == token.EQL:
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// VM has separate opcodes for number and string equality
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if isStringType(c.typeInfo.Types[n.X].Type) {
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emitOpcode(c.prog, vm.EQUAL)
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emitOpcode(c.prog.BinWriter, vm.EQUAL)
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} else {
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emitOpcode(c.prog, vm.NUMEQUAL)
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emitOpcode(c.prog.BinWriter, vm.NUMEQUAL)
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}
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case n.Op == token.NEQ:
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// VM has separate opcodes for number and string equality
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if isStringType(c.typeInfo.Types[n.X].Type) {
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emitOpcode(c.prog, vm.EQUAL)
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emitOpcode(c.prog, vm.NOT)
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emitOpcode(c.prog.BinWriter, vm.EQUAL)
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emitOpcode(c.prog.BinWriter, vm.NOT)
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} else {
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emitOpcode(c.prog, vm.NUMNOTEQUAL)
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emitOpcode(c.prog.BinWriter, vm.NUMNOTEQUAL)
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}
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default:
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c.convertToken(n.Op)
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@ -478,14 +478,14 @@ func (c *codegen) Visit(node ast.Node) ast.Visitor {
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// Do not swap for builtin functions.
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if !isBuiltin {
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if numArgs == 2 {
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emitOpcode(c.prog, vm.SWAP)
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emitOpcode(c.prog.BinWriter, vm.SWAP)
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} else if numArgs == 3 {
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emitInt(c.prog, 2)
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emitOpcode(c.prog, vm.XSWAP)
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emitInt(c.prog.BinWriter, 2)
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emitOpcode(c.prog.BinWriter, vm.XSWAP)
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} else {
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for i := 1; i < numArgs; i++ {
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emitInt(c.prog, int64(i))
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emitOpcode(c.prog, vm.ROLL)
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emitInt(c.prog.BinWriter, int64(i))
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emitOpcode(c.prog.BinWriter, vm.ROLL)
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}
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}
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}
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@ -499,7 +499,7 @@ func (c *codegen) Visit(node ast.Node) ast.Visitor {
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case isSyscall(f):
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c.convertSyscall(f.selector.Name, f.name)
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default:
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emitCall(c.prog, vm.CALL, int16(f.label))
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emitCall(c.prog.BinWriter, vm.CALL, int16(f.label))
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}
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return nil
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@ -529,11 +529,11 @@ func (c *codegen) Visit(node ast.Node) ast.Visitor {
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case token.ADD:
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// +10 == 10, no need to do anything in this case
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case token.SUB:
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emitOpcode(c.prog, vm.NEGATE)
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emitOpcode(c.prog.BinWriter, vm.NEGATE)
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case token.NOT:
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emitOpcode(c.prog, vm.NOT)
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emitOpcode(c.prog.BinWriter, vm.NOT)
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case token.XOR:
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emitOpcode(c.prog, vm.INVERT)
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emitOpcode(c.prog.BinWriter, vm.INVERT)
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default:
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c.prog.Err = fmt.Errorf("invalid unary operator: %s", n.Op)
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return nil
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@ -565,7 +565,7 @@ func (c *codegen) Visit(node ast.Node) ast.Visitor {
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c.emitLoadField(int(val))
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default:
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ast.Walk(c, n.Index)
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emitOpcode(c.prog, vm.PICKITEM) // just pickitem here
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emitOpcode(c.prog.BinWriter, vm.PICKITEM) // just pickitem here
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}
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return nil
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@ -583,14 +583,14 @@ func (c *codegen) Visit(node ast.Node) ast.Visitor {
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ast.Walk(c, n.Cond)
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// Jump if the condition is false
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emitJmp(c.prog, vm.JMPIFNOT, int16(fend))
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emitJmp(c.prog.BinWriter, vm.JMPIFNOT, int16(fend))
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// Walk body followed by the iterator (post stmt).
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ast.Walk(c, n.Body)
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ast.Walk(c, n.Post)
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// Jump back to condition.
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emitJmp(c.prog, vm.JMP, int16(fstart))
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emitJmp(c.prog.BinWriter, vm.JMP, int16(fstart))
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c.setLabel(fend)
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return nil
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@ -612,11 +612,11 @@ func (c *codegen) convertSyscall(api, name string) {
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c.prog.Err = fmt.Errorf("unknown VM syscall api: %s", name)
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return
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}
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emitSyscall(c.prog, api)
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emitSyscall(c.prog.BinWriter, api)
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// This NOP instruction is basically not needed, but if we do, we have a
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// one to one matching avm file with neo-python which is very nice for debugging.
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emitOpcode(c.prog, vm.NOP)
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emitOpcode(c.prog.BinWriter, vm.NOP)
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}
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func (c *codegen) convertBuiltin(expr *ast.CallExpr) {
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@ -633,32 +633,32 @@ func (c *codegen) convertBuiltin(expr *ast.CallExpr) {
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arg := expr.Args[0]
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typ := c.typeInfo.Types[arg].Type
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if isStringType(typ) {
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emitOpcode(c.prog, vm.SIZE)
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emitOpcode(c.prog.BinWriter, vm.SIZE)
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} else {
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emitOpcode(c.prog, vm.ARRAYSIZE)
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emitOpcode(c.prog.BinWriter, vm.ARRAYSIZE)
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}
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case "append":
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arg := expr.Args[0]
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typ := c.typeInfo.Types[arg].Type
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if isByteArrayType(typ) {
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emitOpcode(c.prog, vm.CAT)
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emitOpcode(c.prog.BinWriter, vm.CAT)
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} else {
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emitOpcode(c.prog, vm.SWAP)
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emitOpcode(c.prog, vm.DUP)
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emitOpcode(c.prog, vm.PUSH2)
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emitOpcode(c.prog, vm.XSWAP)
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emitOpcode(c.prog, vm.APPEND)
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emitOpcode(c.prog.BinWriter, vm.SWAP)
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emitOpcode(c.prog.BinWriter, vm.DUP)
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emitOpcode(c.prog.BinWriter, vm.PUSH2)
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emitOpcode(c.prog.BinWriter, vm.XSWAP)
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emitOpcode(c.prog.BinWriter, vm.APPEND)
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}
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case "SHA256":
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emitOpcode(c.prog, vm.SHA256)
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emitOpcode(c.prog.BinWriter, vm.SHA256)
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case "SHA1":
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emitOpcode(c.prog, vm.SHA1)
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emitOpcode(c.prog.BinWriter, vm.SHA1)
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case "Hash256":
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emitOpcode(c.prog, vm.HASH256)
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emitOpcode(c.prog.BinWriter, vm.HASH256)
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case "Hash160":
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emitOpcode(c.prog, vm.HASH160)
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emitOpcode(c.prog.BinWriter, vm.HASH160)
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case "Equals":
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emitOpcode(c.prog, vm.EQUAL)
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emitOpcode(c.prog.BinWriter, vm.EQUAL)
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case "FromAddress":
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// We can be sure that this is a ast.BasicLit just containing a simple
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// address string. Note that the string returned from calling Value will
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@ -671,7 +671,7 @@ func (c *codegen) convertBuiltin(expr *ast.CallExpr) {
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return
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}
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bytes := uint160.Bytes()
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emitBytes(c.prog, bytes)
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emitBytes(c.prog.BinWriter, bytes)
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}
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}
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@ -682,7 +682,7 @@ func (c *codegen) convertByteArray(lit *ast.CompositeLit) {
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val, _ := constant.Int64Val(t.Value)
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buf[i] = byte(val)
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}
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emitBytes(c.prog, buf)
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emitBytes(c.prog.BinWriter, buf)
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}
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func (c *codegen) convertStruct(lit *ast.CompositeLit) {
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@ -694,10 +694,10 @@ func (c *codegen) convertStruct(lit *ast.CompositeLit) {
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return
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}
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emitOpcode(c.prog, vm.NOP)
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emitInt(c.prog, int64(strct.NumFields()))
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emitOpcode(c.prog, vm.NEWSTRUCT)
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emitOpcode(c.prog, vm.TOALTSTACK)
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emitOpcode(c.prog.BinWriter, vm.NOP)
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emitInt(c.prog.BinWriter, int64(strct.NumFields()))
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emitOpcode(c.prog.BinWriter, vm.NEWSTRUCT)
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emitOpcode(c.prog.BinWriter, vm.TOALTSTACK)
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// We need to locally store all the fields, even if they are not initialized.
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// We will initialize all fields to their "zero" value.
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@ -730,55 +730,55 @@ func (c *codegen) convertStruct(lit *ast.CompositeLit) {
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c.emitLoadConst(typeAndVal)
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c.emitStoreLocal(i)
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}
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emitOpcode(c.prog, vm.FROMALTSTACK)
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emitOpcode(c.prog.BinWriter, vm.FROMALTSTACK)
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}
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func (c *codegen) convertToken(tok token.Token) {
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switch tok {
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case token.ADD_ASSIGN:
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emitOpcode(c.prog, vm.ADD)
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emitOpcode(c.prog.BinWriter, vm.ADD)
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case token.SUB_ASSIGN:
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emitOpcode(c.prog, vm.SUB)
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emitOpcode(c.prog.BinWriter, vm.SUB)
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case token.MUL_ASSIGN:
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emitOpcode(c.prog, vm.MUL)
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emitOpcode(c.prog.BinWriter, vm.MUL)
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case token.QUO_ASSIGN:
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emitOpcode(c.prog, vm.DIV)
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emitOpcode(c.prog.BinWriter, vm.DIV)
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case token.ADD:
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emitOpcode(c.prog, vm.ADD)
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emitOpcode(c.prog.BinWriter, vm.ADD)
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case token.SUB:
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emitOpcode(c.prog, vm.SUB)
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emitOpcode(c.prog.BinWriter, vm.SUB)
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case token.MUL:
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emitOpcode(c.prog, vm.MUL)
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emitOpcode(c.prog.BinWriter, vm.MUL)
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case token.QUO:
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emitOpcode(c.prog, vm.DIV)
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emitOpcode(c.prog.BinWriter, vm.DIV)
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case token.LSS:
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emitOpcode(c.prog, vm.LT)
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emitOpcode(c.prog.BinWriter, vm.LT)
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case token.LEQ:
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emitOpcode(c.prog, vm.LTE)
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emitOpcode(c.prog.BinWriter, vm.LTE)
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case token.GTR:
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emitOpcode(c.prog, vm.GT)
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emitOpcode(c.prog.BinWriter, vm.GT)
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case token.GEQ:
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emitOpcode(c.prog, vm.GTE)
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emitOpcode(c.prog.BinWriter, vm.GTE)
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case token.EQL:
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emitOpcode(c.prog, vm.NUMEQUAL)
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emitOpcode(c.prog.BinWriter, vm.NUMEQUAL)
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case token.NEQ:
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emitOpcode(c.prog, vm.NUMNOTEQUAL)
|
||||
emitOpcode(c.prog.BinWriter, vm.NUMNOTEQUAL)
|
||||
case token.DEC:
|
||||
emitOpcode(c.prog, vm.DEC)
|
||||
emitOpcode(c.prog.BinWriter, vm.DEC)
|
||||
case token.INC:
|
||||
emitOpcode(c.prog, vm.INC)
|
||||
emitOpcode(c.prog.BinWriter, vm.INC)
|
||||
case token.NOT:
|
||||
emitOpcode(c.prog, vm.NOT)
|
||||
emitOpcode(c.prog.BinWriter, vm.NOT)
|
||||
case token.AND:
|
||||
emitOpcode(c.prog, vm.AND)
|
||||
emitOpcode(c.prog.BinWriter, vm.AND)
|
||||
case token.OR:
|
||||
emitOpcode(c.prog, vm.OR)
|
||||
emitOpcode(c.prog.BinWriter, vm.OR)
|
||||
case token.SHL:
|
||||
emitOpcode(c.prog, vm.SHL)
|
||||
emitOpcode(c.prog.BinWriter, vm.SHL)
|
||||
case token.SHR:
|
||||
emitOpcode(c.prog, vm.SHR)
|
||||
emitOpcode(c.prog.BinWriter, vm.SHR)
|
||||
case token.XOR:
|
||||
emitOpcode(c.prog, vm.XOR)
|
||||
emitOpcode(c.prog.BinWriter, vm.XOR)
|
||||
default:
|
||||
c.prog.Err = fmt.Errorf("compiler could not convert token: %s", tok)
|
||||
return
|
||||
|
|
|
|||
|
|
@ -12,18 +12,18 @@ import (
|
|||
)
|
||||
|
||||
// emit a VM Instruction with data to the given buffer.
|
||||
func emit(w *io.BufBinWriter, instr vm.Instruction, b []byte) {
|
||||
func emit(w *io.BinWriter, instr vm.Instruction, b []byte) {
|
||||
emitOpcode(w, instr)
|
||||
w.WriteBytes(b)
|
||||
}
|
||||
|
||||
// emitOpcode emits a single VM Instruction the given buffer.
|
||||
func emitOpcode(w *io.BufBinWriter, instr vm.Instruction) {
|
||||
func emitOpcode(w *io.BinWriter, instr vm.Instruction) {
|
||||
w.WriteLE(byte(instr))
|
||||
}
|
||||
|
||||
// emitBool emits a bool type the given buffer.
|
||||
func emitBool(w *io.BufBinWriter, ok bool) {
|
||||
func emitBool(w *io.BinWriter, ok bool) {
|
||||
if ok {
|
||||
emitOpcode(w, vm.PUSHT)
|
||||
return
|
||||
|
|
@ -32,7 +32,7 @@ func emitBool(w *io.BufBinWriter, ok bool) {
|
|||
}
|
||||
|
||||
// emitInt emits a int type to the given buffer.
|
||||
func emitInt(w *io.BufBinWriter, i int64) {
|
||||
func emitInt(w *io.BinWriter, i int64) {
|
||||
switch {
|
||||
case i == -1:
|
||||
emitOpcode(w, vm.PUSHM1)
|
||||
|
|
@ -52,12 +52,12 @@ func emitInt(w *io.BufBinWriter, i int64) {
|
|||
}
|
||||
|
||||
// emitString emits a string to the given buffer.
|
||||
func emitString(w *io.BufBinWriter, s string) {
|
||||
func emitString(w *io.BinWriter, s string) {
|
||||
emitBytes(w, []byte(s))
|
||||
}
|
||||
|
||||
// emitBytes emits a byte array to the given buffer.
|
||||
func emitBytes(w *io.BufBinWriter, b []byte) {
|
||||
func emitBytes(w *io.BinWriter, b []byte) {
|
||||
n := len(b)
|
||||
|
||||
switch {
|
||||
|
|
@ -84,7 +84,7 @@ func emitBytes(w *io.BufBinWriter, b []byte) {
|
|||
|
||||
// emitSyscall emits the syscall API to the given buffer.
|
||||
// Syscall API string cannot be 0.
|
||||
func emitSyscall(w *io.BufBinWriter, api string) {
|
||||
func emitSyscall(w *io.BinWriter, api string) {
|
||||
if len(api) == 0 {
|
||||
w.Err = errors.New("syscall api cannot be of length 0")
|
||||
return
|
||||
|
|
@ -96,12 +96,12 @@ func emitSyscall(w *io.BufBinWriter, api string) {
|
|||
}
|
||||
|
||||
// emitCall emits a call Instruction with label to the given buffer.
|
||||
func emitCall(w *io.BufBinWriter, instr vm.Instruction, label int16) {
|
||||
func emitCall(w *io.BinWriter, instr vm.Instruction, label int16) {
|
||||
emitJmp(w, instr, label)
|
||||
}
|
||||
|
||||
// emitJmp emits a jump Instruction along with label to the given buffer.
|
||||
func emitJmp(w *io.BufBinWriter, instr vm.Instruction, label int16) {
|
||||
func emitJmp(w *io.BinWriter, instr vm.Instruction, label int16) {
|
||||
if !isInstrJmp(instr) {
|
||||
w.Err = fmt.Errorf("opcode %s is not a jump or call type", instr)
|
||||
return
|
||||
|
|
|
|||
Loading…
Reference in a new issue