func printBlock(p *fmt8.Printer, b *Block) {
fmt.Fprintf(p, "%s:\n", b)
p.Tab()
for _, op := range b.ops {
printOp(p, op)
}
printJump(p, b.jump)
p.ShiftTab()
}
func printFunc(p *fmt8.Printer, f *Func) {
fmt.Fprintf(p, "func %s {\n", f.name)
p.Tab()
for b := f.prologue.next; b != f.epilogue; b = b.next {
printBlock(p, b)
}
p.ShiftTab()
fmt.Fprintln(p, "}")
}
func printVarDecls(p *fmt8.Printer, d *VarDecls) {
if d.Lparen == nil {
// single declare
fmt.Fprintf(p, "var ")
for _, decl := range d.Decls {
printVarDecl(p, decl)
}
} else {
fmt.Fprintf(p, "var (\n")
p.Tab()
for _, decl := range d.Decls {
printVarDecl(p, decl)
fmt.Println(p)
}
p.ShiftTab()
fmt.Fprintf(p, ")")
}
}
func printStmt(p *fmt8.Printer, stmt Stmt) {
switch stmt := stmt.(type) {
case *EmptyStmt:
fmt.Fprint(p, "; // emtpy")
case *Block:
if len(stmt.Stmts) > 0 {
fmt.Fprintln(p, "{")
p.Tab()
printStmt(p, stmt.Stmts)
p.ShiftTab()
fmt.Fprint(p, "}")
} else {
fmt.Fprint(p, "{}")
}
case *BlockStmt:
printStmt(p, stmt.Block)
case []Stmt:
for _, s := range stmt {
printStmt(p, s)
fmt.Fprintln(p)
}
case *IfStmt:
printExprs(p, "if ", stmt.Expr, " ")
printStmt(p, stmt.Body)
if stmt.Else != nil {
printStmt(p, stmt.Else)
}
case *ElseStmt:
if stmt.If == nil {
printExprs(p, " else ")
printStmt(p, stmt.Body)
} else {
printExprs(p, " else if ", stmt.Expr, " ")
printStmt(p, stmt.Body)
if stmt.Next != nil {
printStmt(p, stmt.Next)
}
}
case *ForStmt:
printExprs(p, "for ", stmt.Cond, " ")
printStmt(p, stmt.Body)
case *AssignStmt:
printExprs(p, stmt.Left, " = ", stmt.Right)
case *DefineStmt:
printExprs(p, stmt.Left, " := ", stmt.Right)
case *ExprStmt:
printExprs(p, stmt.Expr)
case *ReturnStmt:
if stmt.Exprs != nil {
printExprs(p, "return ", stmt.Exprs)
} else {
printExprs(p, "return")
}
case *ContinueStmt:
if stmt.Label == nil {
printExprs(p, "continue")
} else {
printExprs(p, "continue ", stmt.Label.Lit)
}
case *BreakStmt:
if stmt.Label == nil {
printExprs(p, "break")
} else {
printExprs(p, "break ", stmt.Label.Lit)
}
case *FallthroughStmt:
fmt.Fprint(p, "fallthrough")
case *VarDecls:
printVarDecls(p, stmt)
case *ConstDecls:
printConstDecls(p, stmt)
default:
fmt.Fprintf(p, "<!!%T>", stmt)
}
}