replace regex based directive scanner

README.md

@@ -61,6 +61,8 @@ render("./output", {
 | `<@if(context.x)>` | Conditional block — boolean check (must end with `<@endif>`) |
 | `<@if(eq(context.x,"value"))>` | Conditional block — string equality check |
 | `<@if(neq(context.x,"value"))>` | Conditional block — string inequality check |
+| `<@if(and(context.x,eq(context.y,"value")))>` | Conditional block — all child conditions must match |
+| `<@if(or(context.x,eq(context.y,"value")))>` | Conditional block — any child condition may match |
 | `<@elseif(context.y)>` | Else-if branch (same forms as `@if`) |
 | `<@else>` | Else branch |
 | `<@endif>` | End conditional block |
@@ -74,6 +76,8 @@ render("./output", {
 | `<@if(context.x)>dirname` | Conditionally include directory/file (boolean check) |
 | `<@if(eq(context.x,"value"))>dirname` | Conditionally include by string equality |
 | `<@if(neq(context.x,"value"))>dirname` | Conditionally include by string inequality |
+| `<@if(and(context.x,eq(context.y,"value")))>dirname` | Conditionally include by combined conditions |
+| `<@if(or(context.x,eq(context.y,"value")))>dirname` | Conditionally include by alternate conditions |
 | `<@var(context.x)>` | Dynamic directory/file name |
 
 These can be combined: `<@if(context.web.create)><@var(context.web.dir)>` creates a directory named by `context.web.dir` only if `context.web.create` is true.

index.test.ts

@@ -590,3 +590,68 @@ test("if neq in path", () => {
   render(tmp,{test:"test"})
   expect(existsSync(join(tmp,"not-test"))).toBe(false)
 })
+
+test("if neq multiline block", () => {
+  const createRenderer = initRenderer("./testdata/neq_multiline_block")
+  const render = createRenderer(z.object({
+    project: z.object({
+      frontend: z.string()
+    })
+  }))
+
+  render(tmp,{project:{frontend:"react"}})
+  expect(readFileSync(join(tmp,"test.txt"), "utf-8")).toContain("bun dev")
+
+  render(tmp,{project:{frontend:"none"}})
+  expect(readFileSync(join(tmp,"test.txt"), "utf-8")).not.toContain("bun dev")
+})
+
+test("and or in file", () => {
+  const createRenderer = initRenderer("./testdata/and_or_in_file")
+  expect(() => createRenderer(z.object({
+    enabled: z.boolean(),
+    fallback: z.boolean(),
+    kind: z.boolean()
+  }))).toThrow(SchemaMismatchError)
+
+  const render = createRenderer(z.object({
+    enabled: z.boolean(),
+    fallback: z.boolean(),
+    kind: z.string()
+  }))
+
+  render(tmp,{enabled:true, fallback:false, kind:"web"})
+  let content = readFileSync(join(tmp,"test.txt"), "utf-8")
+  expect(content).toContain("and")
+  expect(content).toContain("or")
+  expect(content).toContain("nested")
+
+  render(tmp,{enabled:false, fallback:true, kind:"web"})
+  content = readFileSync(join(tmp,"test.txt"), "utf-8")
+  expect(content).toContain("not-and")
+  expect(content).toContain("not-or")
+  expect(content).toContain("nested")
+
+  render(tmp,{enabled:false, fallback:true, kind:"docs"})
+  content = readFileSync(join(tmp,"test.txt"), "utf-8")
+  expect(content).toContain("not-and")
+  expect(content).toContain("or")
+  expect(content).toContain("nested")
+})
+
+test("and or in path", () => {
+  const createRenderer = initRenderer("./testdata/and_or_in_path")
+  const render = createRenderer(z.object({
+    enabled: z.boolean(),
+    kind: z.string()
+  }))
+
+  render(tmp,{enabled:true, kind:"web"})
+  expect(existsSync(join(tmp,"match"))).toBe(true)
+
+  render(tmp,{enabled:true, kind:"docs"})
+  expect(existsSync(join(tmp,"match"))).toBe(true)
+
+  render(tmp,{enabled:false, kind:"docs"})
+  expect(existsSync(join(tmp,"match"))).toBe(false)
+})

parser.ts

@@ -9,12 +9,118 @@ export type TemplateVariable = {
 
 const IF_RE = /<@(?:if|elseif)\((.+?)\)>/g
 const VAR_RE = /<@var\(context\.(.+?)(?::(\w+))?\)>/g
-const DIRECTIVE_RE = /<@(if|elseif|else|endif)(?:\((.+?)\))?>/g
 const STRING_COMPARE_RE = /^(?:eq|neq)\(context\.(.+?),\s*"(.*)"\)$/
 const PATH_RE = /^context\.(.+)$/
 
+type DirectiveToken = {
+  type: "if" | "elseif" | "else" | "endif"
+  condition?: string
+}
+
+function readCondition(text: string, start: number): { condition: string; end: number } | null {
+  let depth = 0
+  let inString = false
+  let escaped = false
+
+  for (let i = start; i < text.length; i++) {
+    const char = text[i]!
+    if (escaped) {
+      escaped = false
+      continue
+    }
+    if (char === "\\") {
+      escaped = true
+      continue
+    }
+    if (char === "\"") {
+      inString = !inString
+      continue
+    }
+    if (inString) continue
+    if (char === "(") {
+      depth += 1
+      continue
+    }
+    if (char === ")") {
+      depth -= 1
+      if (depth === 0 && text[i + 1] === ">") {
+        return { condition: text.slice(start + 1, i), end: i + 2 }
+      }
+    }
+  }
+
+  return null
+}
+
+function getDirectiveTokens(text: string): DirectiveToken[] {
+  const tokens: DirectiveToken[] = []
+  for (let i = 0; i < text.length; i++) {
+    if (text[i] !== "<" || text[i + 1] !== "@") continue
+    const rest = text.slice(i + 2)
+    const type = ["elseif", "endif", "else", "if"].find(name => rest.startsWith(name)) as DirectiveToken["type"] | undefined
+    if (!type) continue
+    const afterName = i + 2 + type.length
+    if ((type === "if" || type === "elseif") && text[afterName] === "(") {
+      const parsed = readCondition(text, afterName)
+      if (!parsed) continue
+      tokens.push({ type, condition: parsed.condition })
+      i = parsed.end - 1
+    } else if ((type === "else" || type === "endif") && text[afterName] === ">") {
+      tokens.push({ type })
+      i = afterName
+    }
+  }
+  return tokens
+}
+
+function splitArgs(args: string): string[] {
+  const result: string[] = []
+  let current = ""
+  let depth = 0
+  let inString = false
+  let escaped = false
+
+  for (const char of args) {
+    if (escaped) {
+      current += char
+      escaped = false
+      continue
+    }
+    if (char === "\\") {
+      current += char
+      escaped = true
+      continue
+    }
+    if (char === "\"") {
+      current += char
+      inString = !inString
+      continue
+    }
+    if (!inString && char === "(") depth += 1
+    if (!inString && char === ")") depth -= 1
+    if (!inString && depth === 0 && char === ",") {
+      result.push(current.trim())
+      current = ""
+      continue
+    }
+    current += char
+  }
+
+  if (current.trim() !== "") result.push(current.trim())
+  return result
+}
+
 function extractCondition(expr: string | undefined, vars: TemplateVariable[]) {
   if (!expr) throw new Error("Missing condition expression")
+  for (const operator of ["and", "or"]) {
+    const prefix = `${operator}(`
+    if (expr.startsWith(prefix) && expr.endsWith(")")) {
+      const args = splitArgs(expr.slice(prefix.length, -1))
+      if (args.length === 0) throw new Error(`Invalid condition expression: ${expr}`)
+      for (const arg of args) extractCondition(arg, vars)
+      return
+    }
+  }
   const stringCompareMatch = expr.match(STRING_COMPARE_RE)
   if (stringCompareMatch) {
     vars.push({ path: stringCompareMatch[1]!, type: "string" })
@@ -29,8 +135,10 @@ function extractCondition(expr: string | undefined, vars: TemplateVariable[]) {
 }
 
 function extractFromString(text: string, vars: TemplateVariable[]) {
-  for (const match of text.matchAll(IF_RE)) {
+  for (const token of getDirectiveTokens(text)) {
-    extractCondition(match[1]!, vars)
+    if (token.type === "if" || token.type === "elseif") {
+      extractCondition(token.condition, vars)
+    }
   }
   for (const match of text.matchAll(VAR_RE)) {
     vars.push({ path: match[1]!, type: match[2] ?? "string" })
@@ -40,9 +148,9 @@ function extractFromString(text: string, vars: TemplateVariable[]) {
 function validateIfBlocks(content: string, vars: TemplateVariable[]) {
   const stack: { sawElse: boolean }[] = []
 
-  for (const match of content.matchAll(DIRECTIVE_RE)) {
+  for (const token of getDirectiveTokens(content)) {
-    const directive = match[1]!
+    const directive = token.type
-    const condition = match[2]
+    const condition = token.condition
 
     if (directive === "if") {
       extractCondition(condition!, vars)

render.ts

@@ -13,7 +13,6 @@ import { TextDecoder } from "node:util"
 
 const IF_PATH_RE = /^<@if\((.+?)\)>(.*)$/
 const VAR_RE = /<@var\(context\.(.+?)(?::(\w+))?\)>/g
-const DIRECTIVE_RE = /<@(if|elseif|else|endif)(?:\((.+?)\))?>/g
 const STRING_COMPARE_RE = /^(eq|neq)\(context\.(.+?),\s*"(.*)"\)$/
 const PATH_RE = /^context\.(.+)$/
 
@@ -66,8 +65,55 @@ type RenderState = {
   manifest?: ReverseMapManifest
 }
 
+function splitArgs(args: string): string[] {
+  const result: string[] = []
+  let current = ""
+  let depth = 0
+  let inString = false
+  let escaped = false
+
+  for (const char of args) {
+    if (escaped) {
+      current += char
+      escaped = false
+      continue
+    }
+    if (char === "\\") {
+      current += char
+      escaped = true
+      continue
+    }
+    if (char === "\"") {
+      current += char
+      inString = !inString
+      continue
+    }
+    if (!inString && char === "(") depth += 1
+    if (!inString && char === ")") depth -= 1
+    if (!inString && depth === 0 && char === ",") {
+      result.push(current.trim())
+      current = ""
+      continue
+    }
+    current += char
+  }
+
+  if (current.trim() !== "") result.push(current.trim())
+  return result
+}
+
 function evalCondition(expr: string | undefined, context: Record<string, unknown>): boolean {
   if (!expr) throw new Error("Missing condition expression")
+  for (const operator of ["and", "or"] as const) {
+    const prefix = `${operator}(`
+    if (expr.startsWith(prefix) && expr.endsWith(")")) {
+      const args = splitArgs(expr.slice(prefix.length, -1))
+      if (args.length === 0) throw new Error(`Invalid condition expression: ${expr}`)
+      return operator === "and"
+        ? args.every(arg => evalCondition(arg, context))
+        : args.some(arg => evalCondition(arg, context))
+    }
+  }
   const stringCompareMatch = expr.match(STRING_COMPARE_RE)
   if (stringCompareMatch) {
     const result = resolveContext(context, stringCompareMatch[2]!) === stringCompareMatch[3]
@@ -209,6 +255,41 @@ type DirectiveToken = {
   end: number
 }
 
+function readDirectiveCondition(text: string, start: number): { condition: string; end: number } | null {
+  let depth = 0
+  let inString = false
+  let escaped = false
+
+  for (let i = start; i < text.length; i++) {
+    const char = text[i]!
+    if (escaped) {
+      escaped = false
+      continue
+    }
+    if (char === "\\") {
+      escaped = true
+      continue
+    }
+    if (char === "\"") {
+      inString = !inString
+      continue
+    }
+    if (inString) continue
+    if (char === "(") {
+      depth += 1
+      continue
+    }
+    if (char === ")") {
+      depth -= 1
+      if (depth === 0 && text[i + 1] === ">") {
+        return { condition: text.slice(start + 1, i), end: i + 2 }
+      }
+    }
+  }
+
+  return null
+}
+
 type TextNode = {
   type: "text"
   text: string
@@ -246,12 +327,24 @@ type ConditionalRender = {
 }
 
 function getDirectiveTokens(content: string): DirectiveToken[] {
-  return Array.from(content.matchAll(DIRECTIVE_RE), match => ({
+  const tokens: DirectiveToken[] = []
-    type: match[1] as DirectiveToken["type"],
+  for (let i = 0; i < content.length; i++) {
-    condition: match[2],
+    if (content[i] !== "<" || content[i + 1] !== "@") continue
-    index: match.index!,
+    const rest = content.slice(i + 2)
-    end: match.index! + match[0].length,
+    const type = ["elseif", "endif", "else", "if"].find(name => rest.startsWith(name)) as DirectiveToken["type"] | undefined
-  }))
+    if (!type) continue
+    const afterName = i + 2 + type.length
+    if ((type === "if" || type === "elseif") && content[afterName] === "(") {
+      const parsed = readDirectiveCondition(content, afterName)
+      if (!parsed) continue
+      tokens.push({ type, condition: parsed.condition, index: i, end: parsed.end })
+      i = parsed.end - 1
+    } else if ((type === "else" || type === "endif") && content[afterName] === ">") {
+      tokens.push({ type, index: i, end: afterName + 1 })
+      i = afterName
+    }
+  }
+  return tokens
 }
 
 function parseNodes(

testdata/and_or_in_file/test.txt

@@ -0,0 +1,3 @@
+<@if(and(context.enabled,eq(context.kind,"web")))>and<@else>not-and<@endif>
+<@if(or(context.enabled,neq(context.kind,"web")))>or<@else>not-or<@endif>
+<@if(and(or(context.enabled,context.fallback),neq(context.kind,"native")))>nested<@else>not-nested<@endif>

testdata/and_or_in_path/<@if(and(context.enabled,or(eq(context.kind,"web"),eq(context.kind,"docs"))))>match

@@ -0,0 +1 @@
+match

testdata/neq_multiline_block/test.txt

@@ -0,0 +1,7 @@
+<@if(neq(context.project.frontend,"none"))>
+bundev = {
+  exec = "bun dev";
+  cwd = "./apps/web";
+  after= ["devenv:processes:air@started"];
+};
+<@endif>