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compiler: merge && and || processing

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This commit is contained in:
Evgenii Stratonikov 2020-08-23 13:29:48 +03:00
parent 59367c96d1
commit 1be1b8de9e
1 changed files with 8 additions and 13 deletions
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21
pkg/compiler/codegen.go
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@ -712,21 +712,16 @@ func (c *codegen) Visit(node ast.Node) ast.Visitor {
}
switch n.Op {
case token.LAND:
case token.LAND, token.LOR:
end := c.newLabel()
ast.Walk(c, n.X)
emit.Instruction(c.prog.BinWriter, opcode.JMPIF, []byte{2 + 1 + 5})
emit.Opcode(c.prog.BinWriter, opcode.PUSHF)
emit.Jmp(c.prog.BinWriter, opcode.JMPL, end)
ast.Walk(c, n.Y)
c.setLabel(end)
return nil
case token.LOR:
end := c.newLabel()
ast.Walk(c, n.X)
emit.Instruction(c.prog.BinWriter, opcode.JMPIFNOT, []byte{2 + 1 + 5})
emit.Opcode(c.prog.BinWriter, opcode.PUSHT)
if n.Op == token.LAND {
emit.Instruction(c.prog.BinWriter, opcode.JMPIF, []byte{2 + 1 + 5})
emit.Opcode(c.prog.BinWriter, opcode.PUSHF)
} else {
emit.Instruction(c.prog.BinWriter, opcode.JMPIFNOT, []byte{2 + 1 + 5})
emit.Opcode(c.prog.BinWriter, opcode.PUSHT)
}
emit.Jmp(c.prog.BinWriter, opcode.JMPL, end)
ast.Walk(c, n.Y)
c.setLabel(end)