mirror of
https://github.com/mermaid-js/mermaid.git
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170 lines
6.8 KiB
Plaintext
170 lines
6.8 KiB
Plaintext
/** mermaid
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* https://mermaidjs.github.io/
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* (c) 2014-2015 Knut Sveidqvist
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* MIT license.
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*
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* Based on js sequence diagrams jison grammr
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* http://bramp.github.io/js-sequence-diagrams/
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* (c) 2012-2013 Andrew Brampton (bramp.net)
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* Simplified BSD license.
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*/
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%lex
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%options case-insensitive
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// Special states for recognizing aliases
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%x ID
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%x STATE
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%x FORK_STATE
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%x STATE_STRING
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%x STATE_ID
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%x ALIAS
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%x SCALE
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%x NOTE
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%x NOTE_ID
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%x NOTE_TEXT
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%x FLOATING_NOTE
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%x FLOATING_NOTE_ID
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%x struct
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// A special state for grabbing text up to the first comment/newline
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%x LINE
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%%
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[\n]+ return 'NL';
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\s+ /* skip all whitespace */
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<ID,STATE,struct,LINE>((?!\n)\s)+ /* skip same-line whitespace */
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<INITIAL,ID,STATE,struct,LINE>\#[^\n]* /* skip comments */
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\%%[^\n]* /* skip comments */
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"scale"\s+ { this.pushState('SCALE'); /* console.log('Got scale', yytext);*/ return 'scale'; }
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<SCALE>\d+ return 'WIDTH';
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<SCALE>\s+"width" {this.popState();}
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<INITIAL,struct>"state"\s+ { this.pushState('STATE'); }
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<STATE>.*"<<fork>>" {this.popState();yytext=yytext.slice(0,-8).trim(); console.warn('Fork Fork: ',yytext);return 'FORK';}
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<STATE>.*"<<join>>" {this.popState();yytext=yytext.slice(0,-8).trim();console.warn('Fork Join: ',yytext);return 'JOIN';}
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<STATE>.*"[[fork]]" {this.popState();yytext=yytext.slice(0,-8).trim();console.warn('Fork Fork: ',yytext);return 'FORK';}
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<STATE>.*"[[join]]" {this.popState();yytext=yytext.slice(0,-8).trim();console.warn('Fork Join: ',yytext);return 'JOIN';}
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<STATE>["] this.begin("STATE_STRING");
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<STATE>"as"\s* {this.popState();this.pushState('STATE_ID');return "AS";}
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<STATE_ID>[^\n\{]* {this.popState();/* console.log('STATE_ID', yytext);*/return "ID";}
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<STATE_STRING>["] this.popState();
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<STATE_STRING>[^"]* { /*console.log('Long description:', yytext);*/return "STATE_DESCR";}
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<STATE>[^\n\s\{]+ {/*console.log('COMPOSIT_STATE', yytext);*/return 'COMPOSIT_STATE';}
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<STATE>\n {this.popState();}
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<INITIAL,STATE>\{ {this.popState();this.pushState('struct'); /*console.log('begin struct', yytext);*/return 'STRUCT_START';}
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<struct>\} { /*console.log('Ending struct');*/ this.popState(); return 'STRUCT_STOP';}}
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<struct>[\n] /* nothing */
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<INITIAL,struct>"note"\s+ { this.begin('NOTE'); return 'note'; }
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<NOTE>"left of" { this.popState();this.pushState('NOTE_ID');return 'left_of';}
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<NOTE>"right of" { this.popState();this.pushState('NOTE_ID');return 'right_of';}
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<NOTE>\" { this.popState();this.pushState('FLOATING_NOTE');}
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<FLOATING_NOTE>\s*"as"\s* {this.popState();this.pushState('FLOATING_NOTE_ID');return "AS";}
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<FLOATING_NOTE>["] /**/
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<FLOATING_NOTE>[^"]* { /*console.log('Floating note text: ', yytext);*/return "NOTE_TEXT";}
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<FLOATING_NOTE_ID>[^\n]* {this.popState();/*console.log('Floating note ID', yytext);*/return "ID";}
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<NOTE_ID>\s*[^:\n\s\-]+ { this.popState();this.pushState('NOTE_TEXT');/*console.log('Got ID for note', yytext);*/return 'ID';}
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<NOTE_TEXT>\s*":"[^:\n;]+ { this.popState();/*console.log('Got NOTE_TEXT for note',yytext);*/yytext = yytext.substr(2).trim();return 'NOTE_TEXT';}
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<NOTE_TEXT>\s*[^:;]+"end note" { this.popState();/*console.log('Got NOTE_TEXT for note',yytext);*/yytext = yytext.slice(0,-8).trim();return 'NOTE_TEXT';}
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"stateDiagram"\s+ { /*console.log('Got state diagram', yytext,'#');*/return 'SD'; }
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"hide empty description" { /*console.log('HIDE_EMPTY', yytext,'#');*/return 'HIDE_EMPTY'; }
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<INITIAL,struct>"[*]" { /*console.log('EDGE_STATE=',yytext);*/ return 'EDGE_STATE';}
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<INITIAL,struct>[^:\n\s\-\{]+ { /*console.log('=>ID=',yytext);*/ return 'ID';}
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// <INITIAL,struct>\s*":"[^\+\->:\n;]+ { yytext = yytext.trim(); /*console.log('Descr = ', yytext);*/ return 'DESCR'; }
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<INITIAL,struct>\s*":"[^:\n;]+ { yytext = yytext.trim(); /*console.log('Descr = ', yytext);*/ return 'DESCR'; }
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<INITIAL,struct>"-->" return '-->';
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<struct>"--" return 'CONCURRENT';
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<<EOF>> return 'NL';
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. return 'INVALID';
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/lex
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%left '^'
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%start start
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%% /* language grammar */
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start
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: SPACE start
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| NL start
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| SD document { /*console.warn('Root document', $2);*/ yy.setRootDoc($2);return $2; }
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;
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document
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: /* empty */ { $$ = [] }
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| document line {
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if($2!='nl'){
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$1.push($2);$$ = $1
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}
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// console.warn('Got document',$1, $2);
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}
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;
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line
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: SPACE statement { $$ = $2 }
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| statement { $$ = $1 }
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| NL { $$='nl';}
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;
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statement
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: idStatement { /*console.warn('got id and descr', $1);*/$$={ stmt: 'state', id: $1, type: 'default', description: ''};}
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| idStatement DESCR { /*console.warn('got id and descr', $1, $2.trim());*/$$={ stmt: 'state', id: $1, type: 'default', description: $2.trim()};}
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| idStatement '-->' idStatement
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{
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/*console.warn('got id', $1);yy.addRelation($1, $3);*/
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$$={ stmt: 'relation', state1: { stmt: 'state', id: $1, type: 'default', description: '' }, state2:{ stmt: 'state', id: $3 ,type: 'default', description: ''}};
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}
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| idStatement '-->' idStatement DESCR
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{
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/*yy.addRelation($1, $3, $4.substr(1).trim());*/
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$$={ stmt: 'relation', state1: { stmt: 'state', id: $1, type: 'default', description: '' }, state2:{ stmt: 'state', id: $3 ,type: 'default', description: ''}, description: $4.substr(1).trim()};
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}
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| HIDE_EMPTY
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| scale WIDTH
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| COMPOSIT_STATE
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| COMPOSIT_STATE STRUCT_START document STRUCT_STOP
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{
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/* console.warn('Adding document for state without id ', $1);*/
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$$={ stmt: 'state', id: $1, type: 'default', description: '', doc: $3 }
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}
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| STATE_DESCR AS ID { $$={stmt: 'state', id: $3, type: 'default', description: $1.trim()};}
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| STATE_DESCR AS ID STRUCT_START document STRUCT_STOP
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{
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//console.warn('Adding document for state with id ', $3, $4); yy.addDocument($3);
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$$={ stmt: 'state', id: $3, type: 'default', description: $1, doc: $5 }
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}
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| FORK {
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$$={ stmt: 'state', id: $1, type: 'fork' }
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}
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| JOIN {
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$$={ stmt: 'state', id: $1, type: 'join' }
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}
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| CONCURRENT {
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$$={ stmt: 'state', id: yy.getDividerId(), type: 'divider' }
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}
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| note notePosition ID NOTE_TEXT
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{
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/*console.warn('got NOTE, position: ', $2.trim(), 'id = ', $3.trim(), 'note: ', $4);*/
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$$={ stmt: 'state', id: $3.trim(), note:{position: $2.trim(), text: $4.trim()}};
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}
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| note NOTE_TEXT AS ID
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;
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idStatement
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: ID {$$=$1;}
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| EDGE_STATE {$$=$1;}
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;
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notePosition
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: left_of
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| right_of
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;
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%%
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