| 1 | Prism.languages.mermaid = {
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| 2 | 'comment': {
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| 3 | pattern: /%%.*/,
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| 4 | greedy: true
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| 5 | },
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| 6 |
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| 7 | 'style': {
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| 8 | pattern: /^([ \t]*(?:classDef|linkStyle|style)[ \t]+[\w$-]+[ \t]+)\w.*[^\s;]/m,
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| 9 | lookbehind: true,
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| 10 | inside: {
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| 11 | 'property': /\b\w[\w-]*(?=[ \t]*:)/,
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| 12 | 'operator': /:/,
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| 13 | 'punctuation': /,/
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| 14 | }
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| 15 | },
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| 16 |
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| 17 | 'inter-arrow-label': {
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| 18 | pattern: /([^<>ox.=-])(?:-[-.]|==)(?![<>ox.=-])[ \t]*(?:"[^"\r\n]*"|[^\s".=-](?:[^\r\n.=-]*[^\s.=-])?)[ \t]*(?:\.+->?|--+[->]|==+[=>])(?![<>ox.=-])/,
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| 19 | lookbehind: true,
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| 20 | greedy: true,
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| 21 | inside: {
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| 22 | 'arrow': {
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| 23 | pattern: /(?:\.+->?|--+[->]|==+[=>])$/,
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| 24 | alias: 'operator'
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| 25 | },
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| 26 | 'label': {
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| 27 | pattern: /^([\s\S]{2}[ \t]*)\S(?:[\s\S]*\S)?/,
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| 28 | lookbehind: true,
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| 29 | alias: 'property'
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| 30 | },
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| 31 | 'arrow-head': {
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| 32 | pattern: /^\S+/,
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| 33 | alias: ['arrow', 'operator']
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| 34 | }
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| 35 | }
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| 36 | },
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| 37 |
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| 38 | 'arrow': [
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| 39 | // This might look complex but it really isn't.
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| 40 | // There are many possible arrows (see tests) and it's impossible to fit all of them into one pattern. The
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| 41 | // problem is that we only have one lookbehind per pattern. However, we cannot disallow too many arrow
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| 42 | // characters in the one lookbehind because that would create too many false negatives. So we have to split the
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| 43 | // arrows into different patterns.
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| 44 | {
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| 45 | // ER diagram
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| 46 | pattern: /(^|[^{}|o.-])[|}][|o](?:--|\.\.)[|o][|{](?![{}|o.-])/,
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| 47 | lookbehind: true,
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| 48 | alias: 'operator'
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| 49 | },
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| 50 | {
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| 51 | // flow chart
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| 52 | // (?:==+|--+|-\.*-)
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| 53 | pattern: /(^|[^<>ox.=-])(?:[<ox](?:==+|--+|-\.*-)[>ox]?|(?:==+|--+|-\.*-)[>ox]|===+|---+|-\.+-)(?![<>ox.=-])/,
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| 54 | lookbehind: true,
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| 55 | alias: 'operator'
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| 56 | },
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| 57 | {
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| 58 | // sequence diagram
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| 59 | pattern: /(^|[^<>()x-])(?:--?(?:>>|[x>)])(?![<>()x])|(?:<<|[x<(])--?(?!-))/,
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| 60 | lookbehind: true,
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| 61 | alias: 'operator'
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| 62 | },
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| 63 | {
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| 64 | // class diagram
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| 65 | pattern: /(^|[^<>|*o.-])(?:[*o]--|--[*o]|<\|?(?:--|\.\.)|(?:--|\.\.)\|?>|--|\.\.)(?![<>|*o.-])/,
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| 66 | lookbehind: true,
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| 67 | alias: 'operator'
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| 68 | },
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| 69 | ],
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| 70 |
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| 71 | 'label': {
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| 72 | pattern: /(^|[^|<])\|(?:[^\r\n"|]|"[^"\r\n]*")+\|/,
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| 73 | lookbehind: true,
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| 74 | greedy: true,
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| 75 | alias: 'property'
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| 76 | },
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| 77 |
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| 78 | 'text': {
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| 79 | pattern: /(?:[(\[{]+|\b>)(?:[^\r\n"()\[\]{}]|"[^"\r\n]*")+(?:[)\]}]+|>)/,
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| 80 | alias: 'string'
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| 81 | },
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| 82 | 'string': {
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| 83 | pattern: /"[^"\r\n]*"/,
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| 84 | greedy: true
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| 85 | },
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| 86 |
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| 87 | 'annotation': {
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| 88 | pattern: /<<(?:abstract|choice|enumeration|fork|interface|join|service)>>|\[\[(?:choice|fork|join)\]\]/i,
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| 89 | alias: 'important'
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| 90 | },
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| 91 |
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| 92 | 'keyword': [
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| 93 | // This language has both case-sensitive and case-insensitive keywords
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| 94 | {
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| 95 | pattern: /(^[ \t]*)(?:action|callback|class|classDef|classDiagram|click|direction|erDiagram|flowchart|gantt|gitGraph|graph|journey|link|linkStyle|pie|requirementDiagram|sequenceDiagram|stateDiagram|stateDiagram-v2|style|subgraph)(?![\w$-])/m,
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| 96 | lookbehind: true,
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| 97 | greedy: true
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| 98 | },
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| 99 | {
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| 100 | pattern: /(^[ \t]*)(?:activate|alt|and|as|autonumber|deactivate|else|end(?:[ \t]+note)?|loop|opt|par|participant|rect|state|note[ \t]+(?:over|(?:left|right)[ \t]+of))(?![\w$-])/im,
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| 101 | lookbehind: true,
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| 102 | greedy: true
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| 103 | }
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| 104 | ],
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| 105 |
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| 106 | 'entity': /#[a-z0-9]+;/,
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| 107 |
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| 108 | 'operator': {
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| 109 | pattern: /(\w[ \t]*)&(?=[ \t]*\w)|:::|:/,
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| 110 | lookbehind: true
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| 111 | },
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| 112 | 'punctuation': /[(){};]/
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| 113 | };
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