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Specification 6.0 · Not released · Tested product 5.21.3

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    Library · std.typeset

    LineGeometry.firstTarget

    Set the base target for the line at unit zero.

    LineGeometry.firstTarget: Length<Pt>
    Receiver
    LineGeometry
    Minimum arity
    0
    Maximum arity
    0

    Declaration and parameters

    Link

    Availability

    Included by default: Pending

    Import std.typeset in language mode 5.21.

    The current compiler selects std/typeset.tpz for this language mode. Availability in other released editions and inclusion in each installed distribution are Pending.

    Source evidence

    Receiver

    LineGeometry

    Parameter constraints

    Additional contracts are Pending.

    Public measurement fields use Length<Pt>. Widths, advances, tracking, stretch, shrink, physical targets, insets, font sizes, and optional width limits keep that type across input and output records. Explicit Length conversion functions remain the integer interchange boundary.

    Box.width, Box.trackingAfter, Glue.width, Glue.trackingAfter, Glue.stretch, Glue.shrink, and Penalty.width have type Length<Pt>.

    BreakCluster.advance, BreakCluster.trackingAfter, BreakPolicy.narrowestWordTarget, and BreakPolicy.bodyWordTarget have type Length<Pt>.

    LatinSpacing.fontSizePt, JustificationPolicy.maxAdjustment, and JustificationPolicy.maxGapAdjustment have type Length<Pt>.

    LineGeometry.bodyTarget, LineGeometry.firstTarget, and LineGeometry.dropCapInset have type Length<Pt>.

    PlanLine.target, PlanLine.rawTextWidth, PlanLine.trimmedTextWidth, PlanLine.costTextWidth, and PlanLine.selectedPenaltyWidth have type Length<Pt>. PlanLine.postValidationWidthLimit has type Option<Length<Pt>>.

    An int, a float, or a Length with another unit marker is not an implicit point-length argument. Convert physical units explicitly with toPt() before constructing a typesetting record.

    Indices, counts, penalties, costs, and dimensionless ratios retain their declared types. LatinSpacing.maxLetterSpacingEm is a relative Length<Em>. Resolve it to Length<Pt> with fontSizePt before selecting the computation grid.

    Paragraph.grid selects quantization at the computation boundary. ScaledPoint uses the exact scaled-point integer. MilliPoint uses the existing nearest-even conversion to millipoints. The selected grid never changes the physical interpretation of a public Length<Pt> value.

    Returned distances are converted from the computation grid into Length<Pt> at the output boundary. ParagraphPlan.grid reports the computation policy and is not needed to interpret its distances.

    The public type change preserves the selected cost model. FixedPoint retains its MilliPoint computation requirement. Word-space and CJK ratio calculations keep their independent floor rules. The relative letter-spacing distance is resolved and quantized through the shared Length conversions before it contributes to capacity.

    The public line-badness entry point also receives width, target, and hyphen advance as Length<Pt>. It converts those distances to millipoints at entry and preserves its existing integer cost calculation.

    Related rule: Give public typesetting distances a point-length type

    LineGeometry.bodyTarget and firstTarget are positive Length<Pt> distances that remain positive after conversion to the selected grid. The line beginning at unit zero uses firstTarget. Each later line uses bodyTarget.

    dropCapSpan is an integer from zero through three. dropCapInset is a nonnegative Length<Pt>. When both are positive, subtract the inset from the first dropCapSpan line targets. A zero span or zero inset leaves the base targets unchanged.

    An active inset must be smaller than both firstTarget and bodyTarget after quantization. A nonpositive base target, span outside zero through three, negative inset, or inset that consumes a target returns TypesetError.InvalidPolicy before item validation.

    PlanLine.target reports the resulting physical target after the first line choice, quantization, and any inset. Geometry selects the available width and does not alter source unit indices or measured text widths.

    Related rule: Compute each line target from one geometry

    Result

    Additional contracts are Pending.

    The declared result type is Length<Pt>.

    Effects

    Pending

    Failures

    Pending

    Result and effects

    Link

    Select this field from a value of its named type without call parentheses.

    Supply a positive Length<Pt> that remains positive in the selected grid. The first line subtracts an active dropCapInset from this base.

    Why

    Link

    One geometry record describes first line indentation and the finite span of a drop cap. Checking effective targets before searching prevents different search paths from assigning different meanings to unusable widths.

    Related entries

    Link

    std.typeset

    Give public typesetting distances a point-length type

    Link
    Ruletopaz.stdlib.contract.typeset-length-pt.rule

    Give public typesetting distances a point-length type

    Public measurement fields use Length<Pt>. Widths, advances, tracking, stretch, shrink, physical targets, insets, font sizes, and optional width limits keep that type across input and output records. Explicit Length conversion functions remain the integer interchange boundary.

    Box.width, Box.trackingAfter, Glue.width, Glue.trackingAfter, Glue.stretch, Glue.shrink, and Penalty.width have type Length<Pt>.

    BreakCluster.advance, BreakCluster.trackingAfter, BreakPolicy.narrowestWordTarget, and BreakPolicy.bodyWordTarget have type Length<Pt>.

    LatinSpacing.fontSizePt, JustificationPolicy.maxAdjustment, and JustificationPolicy.maxGapAdjustment have type Length<Pt>.

    LineGeometry.bodyTarget, LineGeometry.firstTarget, and LineGeometry.dropCapInset have type Length<Pt>.

    PlanLine.target, PlanLine.rawTextWidth, PlanLine.trimmedTextWidth, PlanLine.costTextWidth, and PlanLine.selectedPenaltyWidth have type Length<Pt>. PlanLine.postValidationWidthLimit has type Option<Length<Pt>>.

    An int, a float, or a Length with another unit marker is not an implicit point-length argument. Convert physical units explicitly with toPt() before constructing a typesetting record.

    Indices, counts, penalties, costs, and dimensionless ratios retain their declared types. LatinSpacing.maxLetterSpacingEm is a relative Length<Em>. Resolve it to Length<Pt> with fontSizePt before selecting the computation grid.

    Paragraph.grid selects quantization at the computation boundary. ScaledPoint uses the exact scaled-point integer. MilliPoint uses the existing nearest-even conversion to millipoints. The selected grid never changes the physical interpretation of a public Length<Pt> value.

    Returned distances are converted from the computation grid into Length<Pt> at the output boundary. ParagraphPlan.grid reports the computation policy and is not needed to interpret its distances.

    The public type change preserves the selected cost model. FixedPoint retains its MilliPoint computation requirement. Word-space and CJK ratio calculations keep their independent floor rules. The relative letter-spacing distance is resolved and quantized through the shared Length conversions before it contributes to capacity.

    The public line-badness entry point also receives width, target, and hyphen advance as Length<Pt>. It converts those distances to millipoints at entry and preserves its existing integer cost calculation.

    Why

    A physical distance carries the same Length<Pt> type in application geometry and paragraph planning. The type prevents a grid selector or an unlabelled scalar from silently changing the distance.

    Examples Use point lengths in BoxReject untyped physical distances in BoxUse point lengths in GlueReject untyped physical distances in GlueUse point lengths in PenaltyReject untyped physical distances in PenaltyUse point lengths in BreakPolicyReject untyped physical distances in BreakPolicyUse point lengths in BreakClusterReject untyped physical distances in BreakClusterUse point lengths in LatinSpacingReject untyped physical distances in LatinSpacingUse point lengths in JustificationPolicyReject untyped physical distances in JustificationPolicyUse point lengths in LineGeometryReject untyped physical distances in LineGeometryUse point lengths in PlanLineReject untyped physical distances in PlanLinePass typed distances to the line-cost functionReject raw distances at the line-cost boundary

    Diagnostics TPZ5001

    Source evidence

    Use point lengths in Box

    Link

    check · checking · Verification: not-run

    main.tpzUse point lengths in BoxOpen in Playground
    1. import std.typeset as ts
    2. let value: ts.Box = ts.Box {
    3. unitIndex: 0,
    4. text: "A",
    5. width: 12pt,
    6. trackingAfter: 0pt
    7. }
    8. let distance: Length<Pt> = value.width
    Expected outputexit 0
    No stdout.
    $ topaz check main.tpz --format json · target product 5.21.3
    Expected result

    Expected result

    Checking accepts the program. Exit code 0.

    No stderr.

    No stdout.

    This exact example has not been executed.

    Source evidence

    Reject untyped physical distances in Box

    Link

    reject · checking · Verification: not-run

    main.tpzReject untyped physical distances in BoxOpen in Playground
    1. import std.typeset as ts
    2. let value: ts.Box = ts.Box {
    3. unitIndex: 0,
    4. text: "A",
    5. width: 12,
    6. trackingAfter: 0
    7. }
    Expected outputNonzero exit
    No stdout.
    $ topaz check main.tpz --format json · target product 5.21.3
    Expected result

    Expected result

    Rejection during check. Nonzero exit.

    • TPZ5001 stdlib-physical-distance-requires-points at main.tpz:5:10

    No stdout.

    This exact example has not been executed.

    Source evidence

    Use point lengths in Glue

    Link

    check · checking · Verification: not-run

    main.tpzUse point lengths in GlueOpen in Playground
    1. import std.typeset as ts
    2. let value: ts.Glue = ts.Glue {
    3. unitIndex: 1,
    4. text: " ",
    5. width: 3pt,
    6. trackingAfter: 0pt,
    7. stretch: 1pt,
    8. shrink: 1pt
    9. }
    10. let distance: Length<Pt> = value.width
    Expected outputexit 0
    No stdout.
    $ topaz check main.tpz --format json · target product 5.21.3
    Expected result

    Expected result

    Checking accepts the program. Exit code 0.

    No stderr.

    No stdout.

    This exact example has not been executed.

    Source evidence

    Reject untyped physical distances in Glue

    Link

    reject · checking · Verification: not-run

    main.tpzReject untyped physical distances in GlueOpen in Playground
    1. import std.typeset as ts
    2. let value: ts.Glue = ts.Glue {
    3. unitIndex: 1,
    4. text: " ",
    5. width: 3,
    6. trackingAfter: 0,
    7. stretch: 1,
    8. shrink: 1
    9. }
    Expected outputNonzero exit
    No stdout.
    $ topaz check main.tpz --format json · target product 5.21.3
    Expected result

    Expected result

    Rejection during check. Nonzero exit.

    • TPZ5001 stdlib-physical-distance-requires-points at main.tpz:5:10

    No stdout.

    This exact example has not been executed.

    Source evidence

    Use point lengths in Penalty

    Link

    check · checking · Verification: not-run

    main.tpzUse point lengths in PenaltyOpen in Playground
    1. import std.typeset as ts
    2. let value: ts.Penalty = ts.Penalty {
    3. unitEnd: 1,
    4. width: 0pt,
    5. rule: ts.BreakRule.Forced(),
    6. kind: ts.BreakKind.ForcedEnd(),
    7. flagged: false
    8. }
    9. let distance: Length<Pt> = value.width
    Expected outputexit 0
    No stdout.
    $ topaz check main.tpz --format json · target product 5.21.3
    Expected result

    Expected result

    Checking accepts the program. Exit code 0.

    No stderr.

    No stdout.

    This exact example has not been executed.

    Source evidence

    Reject untyped physical distances in Penalty

    Link

    reject · checking · Verification: not-run

    main.tpzReject untyped physical distances in PenaltyOpen in Playground
    1. import std.typeset as ts
    2. let value: ts.Penalty = ts.Penalty {
    3. unitEnd: 1,
    4. width: 0,
    5. rule: ts.BreakRule.Forced(),
    6. kind: ts.BreakKind.ForcedEnd(),
    7. flagged: false
    8. }
    Expected outputNonzero exit
    No stdout.
    $ topaz check main.tpz --format json · target product 5.21.3
    Expected result

    Expected result

    Rejection during check. Nonzero exit.

    • TPZ5001 stdlib-physical-distance-requires-points at main.tpz:4:10

    No stdout.

    This exact example has not been executed.

    Source evidence

    Use point lengths in BreakPolicy

    Link

    check · checking · Verification: not-run

    main.tpzUse point lengths in BreakPolicyOpen in Playground
    1. import std.typeset as ts
    2. let value: ts.BreakPolicy = ts.BreakPolicy {
    3. mode: ts.BreakMode.Character(),
    4. rules: ts.KinsokuRules.Unicode16Ja(),
    5. forbidBefore: [],
    6. forbidAfter: [],
    7. boundaryAllowed: [true],
    8. generatedHyphenEnds: [],
    9. protectFittingLatin: true,
    10. preserveShortWords: true,
    11. narrowestWordTarget: 12pt,
    12. bodyWordTarget: 24pt
    13. }
    14. let distance: Length<Pt> = value.narrowestWordTarget
    Expected outputexit 0
    No stdout.
    $ topaz check main.tpz --format json · target product 5.21.3
    Expected result

    Expected result

    Checking accepts the program. Exit code 0.

    No stderr.

    No stdout.

    This exact example has not been executed.

    Source evidence

    Reject untyped physical distances in BreakPolicy

    Link

    reject · checking · Verification: not-run

    main.tpzReject untyped physical distances in BreakPolicyOpen in Playground
    1. import std.typeset as ts
    2. let value: ts.BreakPolicy = ts.BreakPolicy {
    3. mode: ts.BreakMode.Character(),
    4. rules: ts.KinsokuRules.Unicode16Ja(),
    5. forbidBefore: [],
    6. forbidAfter: [],
    7. boundaryAllowed: [true],
    8. generatedHyphenEnds: [],
    9. protectFittingLatin: true,
    10. preserveShortWords: true,
    11. narrowestWordTarget: 12,
    12. bodyWordTarget: 24
    13. }
    Expected outputNonzero exit
    No stdout.
    $ topaz check main.tpz --format json · target product 5.21.3
    Expected result

    Expected result

    Rejection during check. Nonzero exit.

    • TPZ5001 stdlib-physical-distance-requires-points at main.tpz:11:24

    No stdout.

    This exact example has not been executed.

    Source evidence

    Use point lengths in BreakCluster

    Link

    check · checking · Verification: not-run

    main.tpzUse point lengths in BreakClusterOpen in Playground
    1. import std.typeset as ts
    2. let value: ts.BreakCluster = ts.BreakCluster {
    3. text: "A",
    4. advance: 12pt,
    5. trackingAfter: 0pt
    6. }
    7. let distance: Length<Pt> = value.advance
    Expected outputexit 0
    No stdout.
    $ topaz check main.tpz --format json · target product 5.21.3
    Expected result

    Expected result

    Checking accepts the program. Exit code 0.

    No stderr.

    No stdout.

    This exact example has not been executed.

    Source evidence

    Reject untyped physical distances in BreakCluster

    Link

    reject · checking · Verification: not-run

    main.tpzReject untyped physical distances in BreakClusterOpen in Playground
    1. import std.typeset as ts
    2. let value: ts.BreakCluster = ts.BreakCluster {
    3. text: "A",
    4. advance: 12,
    5. trackingAfter: 0
    6. }
    Expected outputNonzero exit
    No stdout.
    $ topaz check main.tpz --format json · target product 5.21.3
    Expected result

    Expected result

    Rejection during check. Nonzero exit.

    • TPZ5001 stdlib-physical-distance-requires-points at main.tpz:4:12

    No stdout.

    This exact example has not been executed.

    Source evidence

    Use point lengths in LatinSpacing

    Link

    check · checking · Verification: not-run

    main.tpzUse point lengths in LatinSpacingOpen in Playground
    1. import std.typeset as ts
    2. let value: ts.LatinSpacing = ts.LatinSpacing {
    3. minWordSpaceRatio: 0.8,
    4. maxWordSpaceRatio: 1.33,
    5. maxLetterSpacingEm: 0.01em,
    6. fontSizePt: 12pt
    7. }
    8. let distance: Length<Pt> = value.fontSizePt
    Expected outputexit 0
    No stdout.
    $ topaz check main.tpz --format json · target product 5.21.3
    Expected result

    Expected result

    Checking accepts the program. Exit code 0.

    No stderr.

    No stdout.

    This exact example has not been executed.

    Source evidence

    Reject untyped physical distances in LatinSpacing

    Link

    reject · checking · Verification: not-run

    main.tpzReject untyped physical distances in LatinSpacingOpen in Playground
    1. import std.typeset as ts
    2. let value: ts.LatinSpacing = ts.LatinSpacing {
    3. minWordSpaceRatio: 0.8,
    4. maxWordSpaceRatio: 1.33,
    5. maxLetterSpacingEm: 0.01em,
    6. fontSizePt: 12.0
    7. }
    Expected outputNonzero exit
    No stdout.
    $ topaz check main.tpz --format json · target product 5.21.3
    Expected result

    Expected result

    Rejection during check. Nonzero exit.

    • TPZ5001 stdlib-physical-distance-requires-points at main.tpz:6:15

    No stdout.

    This exact example has not been executed.

    Source evidence

    Use point lengths in JustificationPolicy

    Link

    check · checking · Verification: not-run

    main.tpzUse point lengths in JustificationPolicyOpen in Playground
    1. import std.typeset as ts
    2. let value: ts.JustificationPolicy = ts.JustificationPolicy {
    3. mode: ts.JustificationMode.Unjustified(),
    4. minGapCount: 0,
    5. minLineWidthRatioM: 0,
    6. minFinalLineWidthRatioM: None(),
    7. maxAdjustment: 12pt,
    8. maxGapAdjustment: 3pt,
    9. maxGapRatioR: 0,
    10. latinSpacing: None(),
    11. cjkStretchRatio: 0.0
    12. }
    13. let distance: Length<Pt> = value.maxAdjustment
    Expected outputexit 0
    No stdout.
    $ topaz check main.tpz --format json · target product 5.21.3
    Expected result

    Expected result

    Checking accepts the program. Exit code 0.

    No stderr.

    No stdout.

    This exact example has not been executed.

    Source evidence

    Reject untyped physical distances in JustificationPolicy

    Link

    reject · checking · Verification: not-run

    main.tpzReject untyped physical distances in JustificationPolicyOpen in Playground
    1. import std.typeset as ts
    2. let value: ts.JustificationPolicy = ts.JustificationPolicy {
    3. mode: ts.JustificationMode.Unjustified(),
    4. minGapCount: 0,
    5. minLineWidthRatioM: 0,
    6. minFinalLineWidthRatioM: None(),
    7. maxAdjustment: 12,
    8. maxGapAdjustment: 3,
    9. maxGapRatioR: 0,
    10. latinSpacing: None(),
    11. cjkStretchRatio: 0.0
    12. }
    Expected outputNonzero exit
    No stdout.
    $ topaz check main.tpz --format json · target product 5.21.3
    Expected result

    Expected result

    Rejection during check. Nonzero exit.

    • TPZ5001 stdlib-physical-distance-requires-points at main.tpz:7:18

    No stdout.

    This exact example has not been executed.

    Source evidence

    Use point lengths in LineGeometry

    Link

    check · checking · Verification: not-run

    main.tpzUse point lengths in LineGeometryOpen in Playground
    1. import std.typeset as ts
    2. let value: ts.LineGeometry = ts.LineGeometry {
    3. bodyTarget: 24pt,
    4. firstTarget: 20pt,
    5. dropCapSpan: 0,
    6. dropCapInset: 0pt
    7. }
    8. let distance: Length<Pt> = value.bodyTarget
    Expected outputexit 0
    No stdout.
    $ topaz check main.tpz --format json · target product 5.21.3
    Expected result

    Expected result

    Checking accepts the program. Exit code 0.

    No stderr.

    No stdout.

    This exact example has not been executed.

    Source evidence

    Reject untyped physical distances in LineGeometry

    Link

    reject · checking · Verification: not-run

    main.tpzReject untyped physical distances in LineGeometryOpen in Playground
    1. import std.typeset as ts
    2. let value: ts.LineGeometry = ts.LineGeometry {
    3. bodyTarget: 24,
    4. firstTarget: 20,
    5. dropCapSpan: 0,
    6. dropCapInset: 0
    7. }
    Expected outputNonzero exit
    No stdout.
    $ topaz check main.tpz --format json · target product 5.21.3
    Expected result

    Expected result

    Rejection during check. Nonzero exit.

    • TPZ5001 stdlib-physical-distance-requires-points at main.tpz:3:15

    No stdout.

    This exact example has not been executed.

    Source evidence

    Use point lengths in PlanLine

    Link

    check · checking · Verification: not-run

    main.tpzUse point lengths in PlanLineOpen in Playground
    1. import std.typeset as ts
    2. let value: ts.PlanLine = ts.PlanLine {
    3. start: 0,
    4. endExclusive: 1,
    5. trimmedEndExclusive: 1,
    6. displayTextScalarLength: 1,
    7. kind: ts.BreakKind.ForcedEnd(),
    8. target: 12pt,
    9. rawTextWidth: 10pt,
    10. trimmedTextWidth: 10pt,
    11. costTextWidth: 10pt,
    12. selectedPenaltyWidth: 0pt,
    13. postValidationWidthLimit: Some(13pt),
    14. cost: 0,
    15. adjustmentRatioR: 0
    16. }
    17. let distance: Length<Pt> = value.target
    18. let limit: Option<Length<Pt>> = value.postValidationWidthLimit
    Expected outputexit 0
    No stdout.
    $ topaz check main.tpz --format json · target product 5.21.3
    Expected result

    Expected result

    Checking accepts the program. Exit code 0.

    No stderr.

    No stdout.

    This exact example has not been executed.

    Source evidence

    Reject untyped physical distances in PlanLine

    Link

    reject · checking · Verification: not-run

    main.tpzReject untyped physical distances in PlanLineOpen in Playground
    1. import std.typeset as ts
    2. let value: ts.PlanLine = ts.PlanLine {
    3. start: 0,
    4. endExclusive: 1,
    5. trimmedEndExclusive: 1,
    6. displayTextScalarLength: 1,
    7. kind: ts.BreakKind.ForcedEnd(),
    8. target: 12,
    9. rawTextWidth: 10,
    10. trimmedTextWidth: 10,
    11. costTextWidth: 10,
    12. selectedPenaltyWidth: 0,
    13. postValidationWidthLimit: Some(13),
    14. cost: 0,
    15. adjustmentRatioR: 0
    16. }
    Expected outputNonzero exit
    No stdout.
    $ topaz check main.tpz --format json · target product 5.21.3
    Expected result

    Expected result

    Rejection during check. Nonzero exit.

    • TPZ5001 stdlib-physical-distance-requires-points at main.tpz:8:11

    No stdout.

    This exact example has not been executed.

    Source evidence

    Pass typed distances to the line-cost function

    Link

    check · checking · Verification: not-run

    main.tpzPass typed distances to the line-cost functionOpen in Playground
    1. import std.typeset as ts
    2. let value = ts.lineBadness(20pt, 20pt, 4, 1, ts.BreakKind.ForcedEnd(), false, 0, 0pt)
    Expected outputexit 0
    No stdout.
    $ topaz check main.tpz --format json · target product 5.21.3
    Expected result

    Expected result

    Checking accepts the program. Exit code 0.

    No stderr.

    No stdout.

    This exact example has not been executed.

    Source evidence

    Reject raw distances at the line-cost boundary

    Link

    reject · checking · Verification: not-run

    main.tpzReject raw distances at the line-cost boundaryOpen in Playground
    1. import std.typeset as ts
    2. let value = ts.lineBadness(20, 20, 4, 1, ts.BreakKind.ForcedEnd(), false, 0, 0)
    Expected outputNonzero exit
    No stdout.
    $ topaz check main.tpz --format json · target product 5.21.3
    Expected result

    Expected result

    Rejection during check. Nonzero exit.

    • TPZ5001 stdlib-physical-distance-requires-points at main.tpz:2:28

    No stdout.

    This exact example has not been executed.

    Source evidence

    Diagnostics

    Link

    TPZ5001

    Compute each line target from one geometry

    Link
    Ruletopaz.stdlib.contract.typeset-line-geometry.rule

    Compute each line target from one geometry

    LineGeometry.bodyTarget and firstTarget are positive Length<Pt> distances that remain positive after conversion to the selected grid. The line beginning at unit zero uses firstTarget. Each later line uses bodyTarget.

    dropCapSpan is an integer from zero through three. dropCapInset is a nonnegative Length<Pt>. When both are positive, subtract the inset from the first dropCapSpan line targets. A zero span or zero inset leaves the base targets unchanged.

    An active inset must be smaller than both firstTarget and bodyTarget after quantization. A nonpositive base target, span outside zero through three, negative inset, or inset that consumes a target returns TypesetError.InvalidPolicy before item validation.

    PlanLine.target reports the resulting physical target after the first line choice, quantization, and any inset. Geometry selects the available width and does not alter source unit indices or measured text widths.

    Why

    One geometry record describes first line indentation and the finite span of a drop cap. Checking effective targets before searching prevents different search paths from assigning different meanings to unusable widths.

    Examples Apply the first target and drop cap inset in line orderReject a zero line target before planningReject a negative drop cap inset

    Source evidence

    Apply the first target and drop cap inset in line order

    Link

    run · running · Verification: not-run

    main.tpzApply the first target and drop cap inset in line orderOpen in Playground
    1. import std.typeset as ts
    2. import std.io
    4. let items: Array<ts.Item> = [
    5. ts.Item.BoxItem(ts.Box { unitIndex: 0, text: "a", width: 3pt, trackingAfter: 0pt }),
    6. ts.Item.PenaltyItem(ts.Penalty { unitEnd: 1, width: 0pt, rule: ts.BreakRule.Forced(), kind: ts.BreakKind.ForcedEnd(), flagged: false }),
    7. ts.Item.BoxItem(ts.Box { unitIndex: 1, text: "a", width: 3pt, trackingAfter: 0pt }),
    8. ts.Item.PenaltyItem(ts.Penalty { unitEnd: 2, width: 0pt, rule: ts.BreakRule.Forced(), kind: ts.BreakKind.ForcedEnd(), flagged: false })
    9. ]
    10. let input = ts.Paragraph {
    11. grid: ts.DistanceGrid.MilliPoint(),
    12. items: items,
    13. geometry: ts.LineGeometry { bodyTarget: 10pt, firstTarget: 8pt, dropCapSpan: 1, dropCapInset: 2pt },
    14. justification: ts.JustificationPolicy {
    15. mode: ts.JustificationMode.Unjustified(), minGapCount: 0,
    16. minLineWidthRatioM: 0, minFinalLineWidthRatioM: None(),
    17. maxAdjustment: 0pt, maxGapAdjustment: 0pt, maxGapRatioR: 0,
    18. latinSpacing: None(), cjkStretchRatio: 0.0
    19. },
    20. costModel: ts.CostModel.FixedPoint(),
    21. knuthPlass: ts.KnuthPlassPolicy { toleranceR: 100000000, linePenalty: 10, fitnessDemerit: 0, flaggedDemerit: 0, finalFlaggedDemerit: 0 }
    22. }
    23. match (ts.breakParagraph(input)) {
    24. case Ok(result) => {
    25. let first = result.optimized.lines[0]
    26. let second = result.optimized.lines[1]
    27. io.writeLine("{first.target == 6pt} {second.target == 10pt}")
    28. }
    29. case Err(_) => io.writeLine("unexpected error")
    30. }
    Expected outputexit 0
    true true
    $ topaz run main.tpz · target product 5.21.3
    Expected result

    Expected result

    Execution completes. Exit code 0.

    No stderr.

    Expected stdout
    1. true true

    This exact example has not been executed.

    Source evidence

    Reject a zero line target before planning

    Link

    run · running · Verification: not-run

    main.tpzReject a zero line target before planningOpen in Playground
    1. import std.typeset as ts
    2. import std.io
    4. let items: Array<ts.Item> = [
    5. ts.Item.BoxItem(ts.Box { unitIndex: 0, text: "a", width: 1pt, trackingAfter: 0pt }),
    6. ts.Item.PenaltyItem(ts.Penalty { unitEnd: 1, width: 0pt, rule: ts.BreakRule.Forced(), kind: ts.BreakKind.ForcedEnd(), flagged: false })
    7. ]
    8. let input = ts.Paragraph {
    9. grid: ts.DistanceGrid.MilliPoint(),
    10. items: items,
    11. geometry: ts.LineGeometry { bodyTarget: 0pt, firstTarget: 0pt, dropCapSpan: 0, dropCapInset: 0pt },
    12. justification: ts.JustificationPolicy {
    13. mode: ts.JustificationMode.Unjustified(), minGapCount: 0,
    14. minLineWidthRatioM: 0, minFinalLineWidthRatioM: None(),
    15. maxAdjustment: 0pt, maxGapAdjustment: 0pt, maxGapRatioR: 0,
    16. latinSpacing: None(), cjkStretchRatio: 0.0
    17. },
    18. costModel: ts.CostModel.FixedPoint(),
    19. knuthPlass: ts.KnuthPlassPolicy { toleranceR: 100000000, linePenalty: 10, fitnessDemerit: 0, flaggedDemerit: 0, finalFlaggedDemerit: 0 }
    20. }
    21. match (ts.breakParagraph(input)) {
    22. case Err(InvalidPolicy(_)) => io.writeLine("InvalidPolicy")
    23. case _ => io.writeLine("unexpected result")
    24. }
    Expected outputexit 0
    InvalidPolicy
    $ topaz run main.tpz · target product 5.21.3
    Expected result

    Expected result

    Execution completes. Exit code 0.

    No stderr.

    Expected stdout
    1. InvalidPolicy

    This exact example has not been executed.

    Source evidence

    Reject a negative drop cap inset

    Link

    run · running · Verification: not-run

    main.tpzReject a negative drop cap insetOpen in Playground
    1. import std.typeset as ts
    2. import std.io
    4. let items: Array<ts.Item> = [
    5. ts.Item.BoxItem(ts.Box { unitIndex: 0, text: "a", width: 1pt, trackingAfter: 0pt }),
    6. ts.Item.PenaltyItem(ts.Penalty { unitEnd: 1, width: 0pt, rule: ts.BreakRule.Forced(), kind: ts.BreakKind.ForcedEnd(), flagged: false })
    7. ]
    8. let input = ts.Paragraph {
    9. grid: ts.DistanceGrid.MilliPoint(),
    10. items: items,
    11. geometry: ts.LineGeometry { bodyTarget: 10pt, firstTarget: 10pt, dropCapSpan: 1, dropCapInset: -1pt },
    12. justification: ts.JustificationPolicy {
    13. mode: ts.JustificationMode.Unjustified(), minGapCount: 0,
    14. minLineWidthRatioM: 0, minFinalLineWidthRatioM: None(),
    15. maxAdjustment: 0pt, maxGapAdjustment: 0pt, maxGapRatioR: 0,
    16. latinSpacing: None(), cjkStretchRatio: 0.0
    17. },
    18. costModel: ts.CostModel.FixedPoint(),
    19. knuthPlass: ts.KnuthPlassPolicy { toleranceR: 100000000, linePenalty: 10, fitnessDemerit: 0, flaggedDemerit: 0, finalFlaggedDemerit: 0 }
    20. }
    21. match (ts.breakParagraph(input)) {
    22. case Err(InvalidPolicy(_)) => io.writeLine("InvalidPolicy")
    23. case _ => io.writeLine("unexpected result")
    24. }
    Expected outputexit 0
    InvalidPolicy
    $ topaz run main.tpz · target product 5.21.3
    Expected result

    Expected result

    Execution completes. Exit code 0.

    No stderr.

    Expected stdout
    1. InvalidPolicy

    This exact example has not been executed.

    Source evidence

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