edx-platform/static/pattern-library/sass/utilities/_functions.scss

// ------------------------------
// edX Pattern Library: Functions

// About: Sass partial for defining Sass helper functions.

// #FUNCTIONS


// ----------------------------
// FUNCTIONS
// ----------------------------
// get colors from defined palettes map values
@function palette($palette, $tone: 'base') {
    @return map-get(map-get($palettes, $palette), $tone);
}

// get font sizes from defined map values
@function font-size($key) {
  @if map-has-key($font-sizes, $key) {
    @return rem(map-get($font-sizes, $key));
  }

  @warn "Unknown `#{$key}` in $font-sizes.";
  @return null;
}

// get line-heights from defined map values
@function line-height($key) {
  @if map-has-key($line-heights, $key) {
    @return map-get($line-heights, $key);
  }

  @warn "Unknown `#{$key}` in $line-heights.";
  @return null;
}

// get font sizes from defined map values
@function font-weight($key) {
  @if map-has-key($font-weights, $key) {
    @return map-get($font-weights, $key);
  }

  @warn "Unknown `#{$key}` in $font-weights.";
  @return null;
}

// get letter spacing from defined map values
@function letter-spacing($key) {
  @if map-has-key($letter-spacing, $key) {
    @return map-get($letter-spacing, $key);
  }

  @warn "Unknown `#{$key}` in $letter-spacing.";
  @return null;
}

// get z-indexes from defined map values
@function z-index($key) {
  @if map-has-key($z-depths, $key) {
    @return map-get($z-depths, $key);
  }

  @warn "Unknown `#{$key}` in $z-depths.";
  @return null;
}

// get timing from defined map values
@function timing($key) {
  @if map-has-key($timing, $key) {
    @return map-get($timing, $key);
  }

  @warn "Unknown `#{$key}` in $z-depths.";
  @return null;
}

// get vertical spacings from defined map values
@function spacing-vertical($key) {
  @if map-has-key($spacing-vertical, $key) {
    @return rem(map-get($spacing-vertical, $key));
  }

  @warn "Unknown `#{$key}` in $spacing-vertical.";
  @return null;
}

// get horizontal spacings from defined map values
@function spacing-horizontal($key) {
  @if map-has-key($spacing-horizontal, $key) {
    @return rem(map-get($spacing-horizontal, $key));
  }

  @warn "Unknown `#{$key}` in $spacing-horizontal.";
  @return null;
}