import dict only=something

src/compiler/compiler.ts

@@ -797,6 +797,31 @@ export class Compiler {
         return instructions
       }
 
+      case terms.Import: {
+        const instructions: ProgramItem[] = []
+        const [_import, ...nodes] = getAllChildren(node)
+        const args = nodes.filter(node => node.type.id === terms.Identifier)
+        const namedArgs = nodes.filter(node => node.type.id === terms.NamedArg)
+
+        instructions.push(['LOAD', 'import'])
+
+        args.forEach((dict) =>
+          instructions.push(['PUSH', input.slice(dict.from, dict.to)])
+        )
+
+        namedArgs.forEach((arg) => {
+          const { name, valueNode } = getNamedArgParts(arg, input)
+          instructions.push(['PUSH', name])
+          instructions.push(...this.#compileNode(valueNode, input))
+        })
+
+        instructions.push(['PUSH', args.length])
+        instructions.push(['PUSH', namedArgs.length])
+        instructions.push(['CALL'])
+
+        return instructions
+      }
+
       case terms.Comment: {
         return [] // ignore comments
       }

src/compiler/tests/compiler.test.ts

@@ -448,3 +448,31 @@ describe('Compound assignment operators', () => {
     expect('x = 10; x %= 3; x').toEvaluateTo(1)
   })
 })
+
+describe('import', () => {
+  test('imports single dict', () => {
+    expect(`import str; starts-with? abc a`).toEvaluateTo(true)
+  })
+
+  test('imports multiple dicts', () => {
+    expect(`import str math list; map [1 2 3] do x: x * 2 end`).toEvaluateTo([2, 4, 6])
+  })
+
+  test('imports non-prelude dicts', () => {
+    expect(`
+      abc = [a=true b=yes c=si]
+      import abc
+      abc.b
+    `).toEvaluateTo('yes')
+  })
+
+  test('can specify imports', () => {
+    expect(`import str only=ends-with?; ref ends-with? | function?`).toEvaluateTo(true)
+    expect(`import str only=ends-with?; ref starts-with? | function?`).toEvaluateTo(false)
+    expect(`
+      abc = [a=true b=yes c=si]
+      import abc only=[a c]
+      [a c]
+      `).toEvaluateTo([true, 'si'])
+  })
+})

src/parser/shrimp.grammar

@@ -40,6 +40,7 @@ try { @specialize[@name=keyword]<Identifier, "try"> }
 catch { @specialize[@name=keyword]<Identifier, "catch"> }
 finally { @specialize[@name=keyword]<Identifier, "finally"> }
 throw { @specialize[@name=keyword]<Identifier, "throw"> }
+import { @specialize[@name=keyword]<Identifier, "import"> }
 null { @specialize[@name=Null]<Identifier, "null"> }
 
 @external tokens tokenizer from "./tokenizer" { Identifier, AssignableIdentifier, Word, IdentifierBeforeDot, CurlyString }
@@ -71,6 +72,7 @@ consumeToTerminator {
   ambiguousFunctionCall |
   TryExpr |
   Throw |
+  Import |
   IfExpr |
   FunctionDef |
   CompoundAssign |
@@ -160,6 +162,11 @@ Throw {
   throw (BinOp | ConditionalOp | expression)
 }
 
+// this has to be in the parse tree so the scope tracker can use it
+Import { 
+  import NamedArg* Identifier+ NamedArg*
+}
+
 ConditionalOp {
   expression !comparison EqEq expression |
   expression !comparison Neq expression |

src/parser/shrimp.terms.ts

@@ -37,7 +37,7 @@ export const
   Program = 35,
   PipeExpr = 36,
   WhileExpr = 38,
-  keyword = 81,
+  keyword = 83,
   ConditionalOp = 40,
   ParenExpr = 41,
   FunctionCallWithNewlines = 42,
@@ -73,5 +73,6 @@ export const
   FunctionCallWithBlock = 77,
   TryExpr = 78,
   Throw = 80,
-  CompoundAssign = 82,
-  Assign = 83
+  Import = 82,
+  CompoundAssign = 84,
+  Assign = 85

src/parser/shrimp.ts

@@ -4,24 +4,24 @@ import {operatorTokenizer} from "./operatorTokenizer"
 import {tokenizer, specializeKeyword} from "./tokenizer"
 import {trackScope} from "./parserScopeContext"
 import {highlighting} from "./highlight"
-const spec_Identifier = {__proto__:null,while:78, null:112, catch:118, finally:124, end:126, if:134, else:140, try:158, throw:162}
+const spec_Identifier = {__proto__:null,while:78, null:112, catch:118, finally:124, end:126, if:134, else:140, try:158, throw:162, import:166}
 export const parser = LRParser.deserialize({
   version: 14,
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-  stateData: "!$T~O#UOSrOS~OlSOm`On[OoPOpROqgOwiO|[O!WRO!X[O!Y[O!ehO!l[O!qjO!skO#ZXO#[dO#_QO#jYO#kZO~O#]lO~O!ToO#_rO#amO#bnO~OlxOn[OoPOpROqgO|[O!RtO!WRO!X[O!Y[O!bsO!l[O#ZXO#_QO#jYO#kZOP#XXQ#XXR#XXS#XXT#XXU#XXW#XXX#XXY#XXZ#XX[#XX]#XX^#XXd#XXe#XXf#XXg#XXh#XXi#XXj#XXu!jX!Z!jX#i!jX~O#[!jX#m!jX!]!jX!`!jX!a!jX!h!jX~P!}OlxOn[OoPOpROqgO|[O!RtO!WRO!X[O!Y[O!bsO!l[O#ZXO#_QO#jYO#kZOP#YXQ#YXR#YXS#YXT#YXU#YXW#YXX#YXY#YXZ#YX[#YX]#YX^#YXd#YXe#YXf#YXg#YXh#YXi#YXj#YXu#YX#i#YX~O#[#YX#m#YX!Z#YX!]#YX!`#YX!a#YX!h#YX~P&QOPzOQzOR{OS{OT!OOU!POW}OX}OY}OZ}O[}O]}O^yOd|Oe|Of|Og|Oh|Oi|Oj!QO~OPzOQzOR{OS{Od|Oe|Of|Og|Oh|Oi|Ou#WX~O#[#WX#m#WX!]#WX!`#WX!a#WX#i#WX!h#WX~P*eOl!TOm`On[OoPOpROqgOwiO|[O!WRO!X[O!Y[O!ehO!l[O!qjO!skO#ZXO#[!RO#_QO#jYO#kZO~OlxOn[OoPOpRO|[O!RtO!WRO!X[O!Y[O!l[O#ZXO#[!RO#_QO#jYO#kZO~O#l!`O~P-TOV!bO#[#YX#m#YX!]#YX!`#YX!a#YX!h#YX~P'SOP#XXQ#XXR#XXS#XXT#XXU#XXW#XXX#XXY#XXZ#XX[#XX]#XX^#XXd#XXe#XXf#XXg#XXh#XXi#XXj#XXu#WX~O#[#WX#m#WX!]#WX!`#WX!a#WX#i#WX!h#WX~P.vOu#WX#[#WX#m#WX!]#WX!`#WX!a#WX#i#WX!h#WX~OT!OOU!POj!QO~P0tOV!bO_!cO`!cOa!cOb!cOc!cOk!cO~O!Z!dO~P0tOu!gO#[!fO#m!fO~Ol!iO!R!kO!Z!PP~Ol!oOn[OoPOpRO|[O!WRO!X[O!Y[O!l[O#ZXO#_QO#jYO#kZO~OlxOn[OoPOpRO|[O!WRO!X[O!Y[O!l[O#ZXO#_QO#jYO#kZO~O!Z!vO~Ol!zO|!zO#ZXO~Ol!{O#ZXO~O#_!|O#a!|O#b!|O#c!|O#d!|O#e!|O~O!ToO#_#OO#amO#bnO~OqgO!b#PO~P3nOqgO!RtO!bsOu!fa!Z!fa#[!fa#m!fa#i!fa!]!fa!`!fa!a!fa!h!fa~P3nO#[!RO~P!}O#[!RO~P&QO#[!RO#i#hO~P*eO#i#hO~O#i#hOu#WX~O!Z!dO#i#hOu#WX~O#i#hO~P.vOT!OOU!POj!QO#[!ROu#WX~O#i#hO~P8SOu!gO~O#l#jO~P-TO!RtO#[#lO#l#nO~O#[#oO#l#jO~P3nOlSOm`On[OoPOpROqgOwiO|[O!WRO!X[O!Y[O!ehO!l[O!qjO!skO#ZXO#_QO#jYO#kZO~O#[#tO~P9_Ou!gO#[ta#mta#ita!]ta!`ta!ata!hta~Ol!iO!R!kO!Z!PX~OpRO|#zO!WRO!X#zO!Y#zO#_QO~O!Z#|O~OqgO!RtO!bsOT#XXU#XXW#XXX#XXY#XXZ#XX[#XX]#XXj#XX!Z#XX~P3nOT!OOU!POj!QO!Z#gX~OT!OOU!POW}OX}OY}OZ}O[}O]}Oj!QO~O!Z#gX~P=`O!Z#}O~O!Z$OO~P=`OT!OOU!POj!QO!Z$OO~Ou!ra#[!ra#m!ra!]!ra!`!ra!a!ra#i!ra!h!ra~P)TOPzOQzOR{OS{Od|Oe|Of|Og|Oh|Oi|O~Ou!ra#[!ra#m!ra!]!ra!`!ra!a!ra#i!ra!h!ra~P?^OT!OOU!POj!QOu!ra#[!ra#m!ra!]!ra!`!ra!a!ra#i!ra!h!ra~O^yOR!kiS!kid!kie!kif!kig!kih!kii!kiu!ki#[!ki#m!ki#i!ki!]!ki!`!ki!a!ki!h!ki~OP!kiQ!ki~PAaOPzOQzO~PAaOPzOQzOd!kie!kif!kig!kih!kii!kiu!ki#[!ki#m!ki#i!ki!]!ki!`!ki!a!ki!h!ki~OR!kiS!ki~PB|OR{OS{O^yO~PB|OR{OS{O~PB|OW}OX}OY}OZ}O[}O]}OTxijxiuxi#[xi#mxi#ixi!Zxi!]xi!`xi!axi!hxi~OU!PO~PDsOU!PO~PEVOUxi~PDsOT!OOU!POjxiuxi#[xi#mxi#ixi!Zxi!]xi!`xi!axi!hxi~OW}OX}OY}OZ}O[}O]}O~PFaO#[!RO#i$RO~P*eO#i$RO~O#i$ROu#WX~O!Z!dO#i$ROu#WX~O#i$RO~P.vO#i$RO~P8SOqgO!bsO~P-TO#[!RO#i$RO~O!RtO#[#lO#l$UO~O#[#oO#l$WO~P3nOu!gO#[!ui#m!ui!]!ui!`!ui!a!ui#i!ui!h!ui~Ou!gO#[!ti#m!ti!]!ti!`!ti!a!ti#i!ti!h!ti~Ou!gO!]!^X!`!^X!a!^X!h!^X~O#[$ZO!]#fP!`#fP!a#fP!h#fP~P9_O!]$_O!`$`O!a$aO~O!R!kO!Z!Pa~O#[$eO~P9_O!]$_O!`$`O!a$hO~O#[!RO#i$kO~O#[!RO#izi~O!RtO#[#lO#l$nO~O#[#oO#l$oO~P3nOu!gO#[$pO~O#[$ZO!]#fX!`#fX!a#fX!h#fX~P9_Ol$rO~O!Z$sO~O!a$tO~O!`$`O!a$tO~Ou!gO!]$_O!`$`O!a$vO~O#[$ZO!]#fP!`#fP!a#fP~P9_O!a$}O!h$|O~O!a%PO~O!a%QO~O!`$`O!a%QO~OqgO!bsO#izq~P-TO#[!RO#izq~O!Z%VO~O!a%XO~O!a%YO~O!`$`O!a%YO~O!]$_O!`$`O!a%YO~O!a%^O!h$|O~O!Z%aO!e%`O~O!a%^O~O!a%bO~OqgO!bsO#izy~P-TO!a%eO~O!`$`O!a%eO~O!a%hO~O!a%kO~O!Z%lO~O|!l~",
-  goto: "8h#iPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPP#jP$TP$j%h&v&|P(W(d)^)aP)gP*n*nPPPP*rP+O+hPPP,O#jP,h-RP-V-]-rP.i/m$T$TP$TP$T$T0s0y1V1y2P2Z2a2h2n2x3O3YPPP3d3h4]6RPPP7]P7mPPPPP7q7w7}raOf!b!c!d!g!v#t#|#}$O$]$e$s%V%a%lQ!XXR#b!SwaOXf!S!b!c!d!g!v#t#|#}$O$]$e$s%V%a%lr_Of!b!c!d!g!v#t#|#}$O$]$e$s%V%a%lQ![XS!ph%`Q!uiQ!ykQ#X!PQ#Z!OQ#^!QR#e!SvTOfh!b!c!d!g!v#t#|#}$O$]$e$s%V%`%a%l!W[STZiktwyz{|}!O!P!Q!T!U!^!a!o#f#k#p$V$l%T%cS!UX!SQ!zlR!{mQ!WXR#a!SrSOf!b!c!d!g!v#t#|#}$O$]$e$s%V%a%l!WxSTZiktwyz{|}!O!P!Q!T!U!^!a!o#f#k#p$V$l%T%cS!TX!ST!oh%`euSTw!T!U!o#f$l%T%craOf!b!c!d!g!v#t#|#}$O$]$e$s%V%a%ldsSTw!T!U!o#f$l%T%cQ!XXQ#PtR#b!SR!ngX!lg!j!m#y#S[OSTXZfhiktwyz{|}!O!P!Q!S!T!U!^!a!b!c!d!g!o!v#f#k#p#t#|#}$O$V$]$e$l$s%T%V%`%a%c%lR#z!kToQqQ$c#uQ$j$PQ$x$dR%[$yQ#u!dQ$P!vQ$f#}Q$g$OQ%W$sQ%d%VQ%j%aR%m%lQ$b#uQ$i$PQ$u$cQ$w$dQ%R$jS%Z$x$yR%f%[duSTw!T!U!o#f$l%T%cQ!_ZQ#i!^X#l!_#i#m$TvUOXf!S!b!c!d!g!v#t#|#}$O$]$e$s%V%a%lT!rh%`T$z$f${Q%O$fR%_${wUOXf!S!b!c!d!g!v#t#|#}$O$]$e$s%V%a%lrWOf!b!c!d!g!v#t#|#}$O$]$e$s%V%a%lQ!VXQ!xkQ#RzQ#U{Q#W|R#`!S#T[OSTXZfhiktwyz{|}!O!P!Q!S!T!U!^!a!b!c!d!g!o!v#f#k#p#t#|#}$O$V$]$e$l$s%T%V%`%a%c%l![[STZhiktwyz{|}!O!P!Q!T!U!^!a!o#f#k#p$V$l%T%`%cw]OXf!S!b!c!d!g!v#t#|#}$O$]$e$s%V%a%lQfOR!hf^!ec!]#q#r#s$[$dR#v!eQ!SXQ!^Z`#_!S!^#f#g$Q$l%T%cS#f!T!US#g!V![S$Q#`#eQ$l$SR%T$mQ!jgR#x!jQ!mgQ#y!jT#{!m#yQqQR!}qS$]#t$eR$q$]Q$m$SR%U$mYwST!T!U!oR#QwQ${$fR%]${Q#m!_Q$T#iT$X#m$TQ#p!aQ$V#kT$Y#p$VTeOfScOfS!]X!SQ#q!bQ#r!c`#s!d!v#}$O$s%V%a%lQ#w!gU$[#t$]$eR$d#|vVOXf!S!b!c!d!g!v#t#|#}$O$]$e$s%V%a%ldsSTw!T!U!o#f$l%T%cQ!aZS!qh%`Q!tiQ!wkQ#PtQ#RyQ#SzQ#T{Q#V|Q#X}Q#Y!OQ#[!PQ#]!QQ#k!^X#o!a#k#p$Vr^Of!b!c!d!g!v#t#|#}$O$]$e$s%V%a%l![xSTZhiktwyz{|}!O!P!Q!T!U!^!a!o#f#k#p$V$l%T%`%cQ!ZXR#d!S[vSTw!T!U!oQ$S#fV%S$l%T%cTpQqQ$^#tR$y$eQ!shR%i%`rbOf!b!c!d!g!v#t#|#}$O$]$e$s%V%a%lQ!YXR#c!S",
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+  repeatNodeCount: 13,
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+  tokenizers: [operatorTokenizer, 1, 2, 3, tokenizer, new LocalTokenGroup("[~RP!O!PU~ZO#`~~", 11)],
   topRules: {"Program":[0,35]},
   specialized: [{term: 28, get: (value: any, stack: any) => (specializeKeyword(value, stack) << 1), external: specializeKeyword},{term: 28, get: (value: keyof typeof spec_Identifier) => spec_Identifier[value] || -1}],
-  tokenPrec: 2256
+  tokenPrec: 2370
 })

src/parser/tests/basics.test.ts

@@ -1017,3 +1017,34 @@ Assign
         `)
   })
 })
+
+describe('import', () => {
+  test('parses single import', () => {
+    expect(`import str`).toMatchTree(`
+      Import
+        keyword import
+        Identifier str
+      `)
+  })
+
+  test('parses multiple imports', () => {
+    expect(`import str math list`).toMatchTree(`
+      Import
+        keyword import
+        Identifier str
+        Identifier math
+        Identifier list
+      `)
+  })
+
+  test('parses named args', () => {
+    expect(`import str only=ends-with?`).toMatchTree(`
+      Import
+        keyword import
+        Identifier str
+        NamedArg
+          NamedArgPrefix only=
+          Identifier ends-with?
+      `)
+  })
+})

src/prelude/index.ts

@@ -43,6 +43,25 @@ export const globals = {
     return typeof v !== 'string' || this.scope.has(v)
   },
   ref: (fn: Function) => fn,
+  import: function (this: VM, atNamed: Record<any, string | string[]> = {}, ...idents: string[]) {
+    const onlyArray = Array.isArray(atNamed.only) ? atNamed.only : [atNamed.only].filter(a => a)
+    const only = new Set(onlyArray)
+    const wantsOnly = only.size > 0
+
+
+    for (const ident of idents) {
+      const module = this.get(ident)
+
+      if (!module) throw new Error(`import: can't find ${ident}`)
+      if (module.type !== 'dict') throw new Error(`import: can't import ${module.type}`)
+
+      for (const [name, value] of module.value.entries()) {
+        if (value.type === 'dict') throw new Error(`import: can't import dicts in dicts`)
+        if (wantsOnly && !only.has(name)) continue
+        this.set(name, value)
+      }
+    }
+  },
 
   // env
   args: Bun.argv.slice(1),