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discard """
output: '''top level statements are executed!
(ival: 10, fval: 2.0)
2.0
my secret
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'''
joinable: "false"
"""
## Example program that demonstrates how to use the
## compiler as an API to embed into your own projects.
import "../../compiler" / [ast, vmdef, vm, nimeval, llstream]
import std / [os]
proc main() =
let std = findNimStdLibCompileTime()
var intr = createInterpreter("myscript.nim",[std, parentDir(currentSourcePath)])
intr.implementRoutine("*", "exposed", "addFloats", proc (a: VmArgs) =
setResult(a, getFloat(a, 0) + getFloat(a, 1) + getFloat(a, 2))
)
intr.evalScript()
let foreignProc = selectRoutine(intr, "hostProgramRunsThis")
if foreignProc == nil:
quit "script does not export a proc of the name: 'hostProgramRunsThis'"
let res = intr.callRoutine(foreignProc, [newFloatNode(nkFloatLit, 0.9),
newFloatNode(nkFloatLit, 0.1)])
doAssert res.kind == nkFloatLit
echo res.floatVal
let foreignValue = selectUniqueSymbol(intr, "hostProgramWantsThis")
if foreignValue == nil:
quit "script does not export a global of the name: hostProgramWantsThis"
let val = intr.getGlobalValue(foreignValue)
doAssert val.kind in {nkStrLit..nkTripleStrLit}
echo val.strVal
destroyInterpreter(intr)
main()
block issue9180:
proc evalString(code: string, moduleName = "script.nim") =
let stream = llStreamOpen(code)
let std = findNimStdLibCompileTime()
var intr = createInterpreter(moduleName, [std])
intr.evalScript(stream)
destroyInterpreter(intr)
llStreamClose(stream)
evalString("echo 10+1")
evalString("echo 10+2")
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