// buildFunction compiles the given function.
func (a *assembler) buildFunction(f *parser.Function) (err error) {
nodes := f.Children()
name := nodes[0].(*parser.Label)
a.debug.SetFunctionStart(cpu.Word(len(a.code)), f.Line(), name.Data)
for i := range nodes {
switch tt := nodes[i].(type) {
case *parser.Comment:
/* ignore */
case *parser.Label:
a.labels[tt.Data] = cpu.Word(len(a.code))
case *parser.Instruction:
err = a.buildInstruction(tt.Children())
default:
err = NewBuildError(
a.ast.Files[tt.File()], tt.Line(), tt.Col(),
"Unexpected node %T. Want Comment, Label, Instruction.", tt,
)
}
if err != nil {
return
}
}
a.debug.SetFunctionEnd(cpu.Word(len(a.code)), nodes[len(nodes)-1].Line())
return
}
