3d3a510071
This removes some hacks where we were creating nodes with the wrong positions and later updating them to have the correct positions, along with a general increase in the rigorousness of position tracking. Change-Id: I2bc635de6d5f516d5fb6763b00a22a10ccdf135f Reviewed-on: https://skia-review.googlesource.com/c/skia/+/526678 Reviewed-by: Brian Osman <brianosman@google.com> Commit-Queue: Ethan Nicholas <ethannicholas@google.com>
110 lines
3.1 KiB
C++
110 lines
3.1 KiB
C++
/*
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* Copyright 2021 Google LLC.
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*
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* Use of this source code is governed by a BSD-style license that can be
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* found in the LICENSE file.
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*/
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#ifndef SKSL_POSITION
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#define SKSL_POSITION
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#include "include/core/SkTypes.h"
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#include <string_view>
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#ifndef __has_builtin
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#define __has_builtin(x) 0
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#endif
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namespace SkSL {
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class Position {
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public:
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Position()
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: fStartOffsetOrLine(-1)
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, fEndOffset(-1) {}
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static Position Line(int line) {
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Position result;
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result.fStartOffsetOrLine = line;
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result.fEndOffset = -1;
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return result;
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}
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static Position Range(int startOffset, int endOffset) {
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SkASSERT(startOffset <= endOffset);
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Position result;
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result.fStartOffsetOrLine = startOffset;
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result.fEndOffset = endOffset;
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return result;
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}
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#if __has_builtin(__builtin_FILE) && __has_builtin(__builtin_LINE)
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static Position Capture(const char* file = __builtin_FILE(), int line = __builtin_LINE());
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#else
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static Position Capture() { return Position(); }
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#endif // __has_builtin(__builtin_FILE) && __has_builtin(__builtin_LINE)
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bool valid() const {
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return fStartOffsetOrLine != -1;
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}
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int line(std::string_view source = std::string_view()) const;
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int startOffset() const {
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SkASSERT(this->valid());
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SkASSERTF(fEndOffset != -1, "checking offsets of line position (%d)", fStartOffsetOrLine);
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return fStartOffsetOrLine;
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}
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int endOffset() const {
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SkASSERT(this->valid());
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SkASSERTF(fEndOffset != -1, "checking offsets of line position (%d)", fStartOffsetOrLine);
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return fEndOffset;
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}
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// Returns the position from this through, and including the entirety of, end.
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Position rangeThrough(Position end) const {
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if (fEndOffset == -1 || end.fEndOffset == -1) {
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return *this;
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}
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SkASSERTF(this->startOffset() <= end.startOffset() && this->endOffset() <= end.endOffset(),
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"Invalid range: (%d-%d) - (%d-%d)\n", this->startOffset(), this->endOffset(),
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end.startOffset(), end.endOffset());
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return Range(this->startOffset(), end.endOffset());
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}
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bool operator==(const Position& other) const {
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return fStartOffsetOrLine == other.fStartOffsetOrLine &&
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fEndOffset == other.fEndOffset;
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}
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bool operator!=(const Position& other) const {
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return !(*this == other);
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}
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bool operator>(const Position& other) const {
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return fStartOffsetOrLine > other.fStartOffsetOrLine;
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}
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bool operator>=(const Position& other) const {
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return fStartOffsetOrLine >= other.fStartOffsetOrLine;
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}
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bool operator<(const Position& other) const {
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return fStartOffsetOrLine < other.fStartOffsetOrLine;
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}
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bool operator<=(const Position& other) const {
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return fStartOffsetOrLine <= other.fStartOffsetOrLine;
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}
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private:
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// Contains either a start offset (if fEndOffset != -1) or a line number (if fEndOffset == -1)
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int32_t fStartOffsetOrLine;
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int32_t fEndOffset;
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};
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} // namespace SkSL
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#endif
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