2010-12-13 19:13:10 +00:00
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// 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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import ()
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//int array array -> Create array of length int
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func array(interpreter *Interpreter) {
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interpreter.Push(make([]Value, interpreter.PopInt()))
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}
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//array length int -> Return number of elements in array
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func lengtharray(interpreter *Interpreter) {
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2011-02-02 21:38:05 +00:00
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interpreter.Push(float64(len(interpreter.Pop().([]Value))))
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2010-12-13 19:13:10 +00:00
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}
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//array index get any -> Return array element indexed by index
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func getarray(interpreter *Interpreter) {
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index := interpreter.PopInt()
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array := interpreter.Pop().([]Value)
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interpreter.Push(array[index])
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}
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//array index any put – -> Put any into array at index
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func putarray(interpreter *Interpreter) {
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value := interpreter.Pop()
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index := interpreter.PopInt()
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array := interpreter.Pop().([]Value)
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array[index] = value
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}
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//array index count getinterval subarray -> Return subarray of array starting at index for count elements
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func getinterval(interpreter *Interpreter) {
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count := interpreter.PopInt()
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index := interpreter.PopInt()
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array := interpreter.Pop().([]Value)
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subarray := make([]Value, count)
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copy(subarray, array[index:index+count])
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interpreter.Push(subarray)
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}
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//array1 index array2 putinterval – Replace subarray of array1 starting at index by array2|packedarray2
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func putinterval(interpreter *Interpreter) {
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array2 := interpreter.Pop().([]Value)
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index := interpreter.PopInt()
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array1 := interpreter.Pop().([]Value)
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for i, v := range array2 {
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array1[i+index] = v
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}
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}
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// any0 … anyn−1 array astore array
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// stores the objects any0 to anyn−1 from the operand stack into array, where n is the length of array
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func astore(interpreter *Interpreter) {
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array := interpreter.Pop().([]Value)
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n := len(array)
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for i := 0; i < n; i++ {
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array[i] = interpreter.Pop()
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}
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}
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//array aload any0 … any-1 array
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//Push all elements of array on stack
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func aload(interpreter *Interpreter) {
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array := interpreter.Pop().([]Value)
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for _, v := range array {
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interpreter.Push(v)
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}
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interpreter.Push(array)
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}
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//array proc forall – Execute proc for each element of array
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func forallarray(interpreter *Interpreter) {
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proc := NewProcedure(interpreter.PopProcedureDefinition())
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array := interpreter.Pop().([]Value)
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for _, v := range array {
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interpreter.Push(v)
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proc.Execute(interpreter)
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}
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}
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var packing bool = false
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func currentpacking(interpreter *Interpreter) {
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interpreter.Push(packing)
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}
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func setpacking(interpreter *Interpreter) {
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packing = interpreter.PopBoolean()
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}
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func initArrayOperators(interpreter *Interpreter) {
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interpreter.SystemDefine("array", NewOperator(array))
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interpreter.SystemDefine("getinterval", NewOperator(getinterval))
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interpreter.SystemDefine("putinterval", NewOperator(putinterval))
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interpreter.SystemDefine("astore", NewOperator(astore))
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interpreter.SystemDefine("aload", NewOperator(aload))
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interpreter.SystemDefine("currentpacking", NewOperator(currentpacking))
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interpreter.SystemDefine("setpacking", NewOperator(setpacking))
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}
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