47 lines
1009 B
Go
47 lines
1009 B
Go
// Copyright 2010 The postscript-go Authors. All rights reserved.
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// created: 13/12/2010 by Laurent Le Goff
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package postscript
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type ProcedureDefinition struct {
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Values []Value
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}
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func NewProcedureDefinition() *ProcedureDefinition {
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proceduredef := new(ProcedureDefinition)
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proceduredef.Values = make([]Value, 0, 100)
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return proceduredef
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}
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func (p *ProcedureDefinition) Add(value Value) {
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p.Values = append(p.Values, value)
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}
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type Procedure struct {
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def *ProcedureDefinition
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}
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func NewProcedure(def *ProcedureDefinition) *Procedure {
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return &Procedure{def}
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}
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func (p *Procedure) Execute(interpreter *Interpreter) {
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for _, value := range p.def.Values {
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if s, ok := value.(string); ok {
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firstChar := s[0]
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if firstChar != '(' && firstChar != '/' {
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interpreter.computeReference(s)
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} else {
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interpreter.Push(value)
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}
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} else {
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operator, isOperator := value.(Operator)
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if isOperator {
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operator.Execute(interpreter)
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} else {
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interpreter.Push(value)
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}
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}
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}
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}
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