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54 lines
1.6 KiB
Go
54 lines
1.6 KiB
Go
// ================================================================
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// Tracks everything needed for statement evaluation/assignment in the Miller
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// DSL runtimne: current record/context (the latter being NF, NR, etc);
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// out-of-stream variables; local-variable stack; etc.
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// ================================================================
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package runtime
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import (
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"container/list"
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"github.com/johnkerl/miller/internal/pkg/cli"
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"github.com/johnkerl/miller/internal/pkg/lib"
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"github.com/johnkerl/miller/internal/pkg/types"
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)
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type State struct {
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Inrec *types.Mlrmap
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Context *types.Context
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Oosvars *types.Mlrmap
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FilterExpression *types.Mlrval
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Stack *Stack
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OutputRecordsAndContexts *list.List // list of *types.RecordAndContext
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// For holding "\0".."\9" between where they are set via things like
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// '$x =~ "(..)_(...)"', and interpolated via things like '$y = "\2:\1"'.
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RegexCaptures []string
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Options *cli.TOptions
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}
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func NewEmptyState(options *cli.TOptions) *State {
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oosvars := types.NewMlrmap()
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return &State{
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Inrec: nil,
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Context: nil,
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Oosvars: oosvars,
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FilterExpression: types.MLRVAL_TRUE,
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Stack: NewStack(),
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// OutputRecordsAndContexts is assigned after construction
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// See lib.MakeEmptyRegexCaptures for context.
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RegexCaptures: lib.MakeEmptyRegexCaptures(),
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Options: options,
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}
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}
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func (state *State) Update(
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inrec *types.Mlrmap,
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context *types.Context,
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) {
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state.Inrec = inrec
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state.Context = context
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state.RegexCaptures = lib.MakeEmptyRegexCaptures()
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}
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