Merge pull request #21 from sasjs/issue-12

feat: new rule hasMacroNameInMend

.sasjslint

@@ -6,5 +6,6 @@
     "maxLineLength": 80,
     "lowerCaseFileNames": true,
     "noTabIndentation": true,
-    "indentationMultiple": 2
+    "indentationMultiple": 2,
+    "hasMacroNameInMend": false
 }

src/rules/hasMacroNameInMend.spec.ts

@@ -0,0 +1,266 @@
+import { Severity } from '../types/Severity'
+import { hasMacroNameInMend } from './hasMacroNameInMend'
+
+describe('hasMacroNameInMend', () => {
+  it('should return an empty array when %mend has correct macro name', () => {
+    const content = `
+  %macro somemacro();
+    %put &sysmacroname;
+  %mend somemacro;`
+
+    expect(hasMacroNameInMend.test(content)).toEqual([])
+  })
+
+  it('should return an empty array when %mend has correct macro name without parentheses', () => {
+    const content = `
+  %macro somemacro;
+    %put &sysmacroname;
+  %mend somemacro;`
+
+    expect(hasMacroNameInMend.test(content)).toEqual([])
+  })
+
+  it('should return an array with a single diagnostic when %mend has no macro name', () => {
+    const content = `
+  %macro somemacro;
+    %put &sysmacroname;
+  %mend;`
+
+    expect(hasMacroNameInMend.test(content)).toEqual([
+      {
+        message: '%mend missing macro name',
+        lineNumber: 4,
+        startColumnNumber: 3,
+        endColumnNumber: 9,
+        severity: Severity.Warning
+      }
+    ])
+  })
+
+  it('should return an array with a single diagnostic when %mend has incorrect macro name', () => {
+    const content = `
+  %macro somemacro;
+    %put &sysmacroname;
+  %mend someanothermacro;`
+
+    expect(hasMacroNameInMend.test(content)).toEqual([
+      {
+        message: 'mismatch macro name in %mend statement',
+        lineNumber: 4,
+        startColumnNumber: 9,
+        endColumnNumber: 25,
+        severity: Severity.Warning
+      }
+    ])
+  })
+
+  it('should return an empty array when the file is undefined', () => {
+    const content = undefined
+
+    expect(hasMacroNameInMend.test((content as unknown) as string)).toEqual([])
+  })
+
+  describe('nestedMacros', () => {
+    it('should return an empty array when %mend has correct macro name', () => {
+      const content = `
+  %macro outer();
+
+    %macro inner();
+      %put inner;
+    %mend inner;
+    %inner()
+    %put outer;
+  %mend outer;`
+
+      expect(hasMacroNameInMend.test(content)).toEqual([])
+    })
+
+    it('should return an array with a single diagnostic when %mend has no macro name(inner)', () => {
+      const content = `
+  %macro outer();
+
+    %macro inner();
+      %put inner;
+    %mend;
+    %inner()
+    %put outer;
+  %mend outer;`
+
+      expect(hasMacroNameInMend.test(content)).toEqual([
+        {
+          message: '%mend missing macro name',
+          lineNumber: 6,
+          startColumnNumber: 5,
+          endColumnNumber: 11,
+          severity: Severity.Warning
+        }
+      ])
+    })
+
+    it('should return an array with a single diagnostic when %mend has no macro name(outer)', () => {
+      const content = `
+  %macro outer();
+
+    %macro inner();
+      %put inner;
+    %mend inner;
+    %inner()
+    %put outer;
+  %mend;`
+
+      expect(hasMacroNameInMend.test(content)).toEqual([
+        {
+          message: '%mend missing macro name',
+          lineNumber: 9,
+          startColumnNumber: 3,
+          endColumnNumber: 9,
+          severity: Severity.Warning
+        }
+      ])
+    })
+
+    it('should return an array with two diagnostics when %mend has no macro name(none)', () => {
+      const content = `
+  %macro outer();
+
+    %macro inner();
+      %put inner;
+    %mend;
+    %inner()
+    %put outer;
+  %mend;`
+
+      expect(hasMacroNameInMend.test(content)).toEqual([
+        {
+          message: '%mend missing macro name',
+          lineNumber: 6,
+          startColumnNumber: 5,
+          endColumnNumber: 11,
+          severity: Severity.Warning
+        },
+        {
+          message: '%mend missing macro name',
+          lineNumber: 9,
+          startColumnNumber: 3,
+          endColumnNumber: 9,
+          severity: Severity.Warning
+        }
+      ])
+    })
+  })
+
+  describe('with extra spaces and comments', () => {
+    it('should return an empty array when %mend has correct macro name', () => {
+      const content = `
+      /* 1st comment */
+     %macro  somemacro ;
+
+      %put &sysmacroname;
+
+     /* 2nd 
+     comment */
+      /* 3rd comment */ %mend  somemacro ;`
+
+      expect(hasMacroNameInMend.test(content)).toEqual([])
+    })
+
+    it('should return an array with a single diagnostic when %mend has correct macro name having code in comments', () => {
+      const content = `/**
+      @file examplemacro.sas
+      @brief an example of a macro to be used in a service
+      @details  This macro is great. Yadda yadda yadda.  Usage:
+
+        * code formatting applies when indented by 4 spaces; code formatting applies when indented by 4 spaces; code formatting applies when indented by 4 spaces; code formatting applies when indented by 4 spaces; code formatting applies when indented by 4 spaces;
+
+        some code
+        %macro examplemacro123();      
+        
+        %examplemacro()
+
+      <h4> SAS Macros </h4>
+      @li doesnothing.sas
+
+      @author Allan Bowe
+    **/
+
+    %macro examplemacro();
+
+    proc sql;
+    create table areas
+      as select area
+      
+    from sashelp.springs;
+
+    %doesnothing();
+
+    %mend;`
+
+      expect(hasMacroNameInMend.test(content)).toEqual([
+        {
+          message: '%mend missing macro name',
+          lineNumber: 29,
+          startColumnNumber: 5,
+          endColumnNumber: 11,
+          severity: Severity.Warning
+        }
+      ])
+    })
+
+    it('should return an array with a single diagnostic when %mend has incorrect macro name', () => {
+      const content = `
+    %macro  somemacro;
+/* some comments */
+      %put  &sysmacroname;
+/* some comments */
+    %mend    someanothermacro   ;`
+
+      expect(hasMacroNameInMend.test(content)).toEqual([
+        {
+          message: 'mismatch macro name in %mend statement',
+          lineNumber: 6,
+          startColumnNumber: 14,
+          endColumnNumber: 30,
+          severity: Severity.Warning
+        }
+      ])
+    })
+
+    it('should return an array with a single diagnostic when %mend has no macro name', () => {
+      const content = `
+     %macro   somemacro ;
+      /* some comments */%put &sysmacroname;
+    %mend         ;`
+
+      expect(hasMacroNameInMend.test(content)).toEqual([
+        {
+          message: '%mend missing macro name',
+          lineNumber: 4,
+          startColumnNumber: 5,
+          endColumnNumber: 11,
+          severity: Severity.Warning
+        }
+      ])
+    })
+
+    describe('nestedMacros', () => {
+      it('should return an empty array when %mend has correct macro name', () => {
+        const content = `
+  %macro outer( ) ;
+
+
+    %macro inner();
+
+      %put inner;
+
+       %mend inner;
+
+      %inner()
+
+         %put outer;
+  %mend outer;`
+
+        expect(hasMacroNameInMend.test(content)).toEqual([])
+      })
+    })
+  })
+})

src/rules/hasMacroNameInMend.ts

@@ -0,0 +1,106 @@
+import { Diagnostic } from '../types/Diagnostic'
+import { FileLintRule } from '../types/LintRule'
+import { LintRuleType } from '../types/LintRuleType'
+import { Severity } from '../types/Severity'
+
+const name = 'hasMacroNameInMend'
+const description = 'The %mend statement should contain the macro name'
+const message = '$mend statement missing or incorrect'
+const test = (value: string) => {
+  const diagnostics: Diagnostic[] = []
+
+  const statements: string[] = value ? value.split(';') : []
+
+  const stack: string[] = []
+  let trimmedStatement = '',
+    commentStarted = false
+  statements.forEach((statement, index) => {
+    ;({ statement: trimmedStatement, commentStarted } = trimComments(
+      statement,
+      commentStarted
+    ))
+
+    if (trimmedStatement.startsWith('%macro ')) {
+      const macroName = trimmedStatement
+        .split(' ')
+        .filter((s: string) => !!s)[1]
+        .split('(')[0]
+      stack.push(macroName)
+    } else if (trimmedStatement.startsWith('%mend')) {
+      const macroStarted = stack.pop()
+      const macroName = trimmedStatement
+        .split(' ')
+        .filter((s: string) => !!s)[1]
+
+      if (!macroName) {
+        diagnostics.push({
+          message: '%mend missing macro name',
+          lineNumber: getLineNumber(statements, index + 1),
+          startColumnNumber: getColNumber(statement, '%mend'),
+          endColumnNumber: getColNumber(statement, '%mend') + 6,
+          severity: Severity.Warning
+        })
+      } else if (macroName !== macroStarted) {
+        diagnostics.push({
+          message: 'mismatch macro name in %mend statement',
+          lineNumber: getLineNumber(statements, index + 1),
+          startColumnNumber: getColNumber(statement, macroName),
+          endColumnNumber:
+            getColNumber(statement, macroName) + macroName.length,
+          severity: Severity.Warning
+        })
+      }
+    }
+  })
+  if (stack.length) {
+    diagnostics.push({
+      message: 'missing %mend statement for macro(s)',
+      lineNumber: statements.length + 1,
+      startColumnNumber: 1,
+      endColumnNumber: 1,
+      severity: Severity.Warning
+    })
+  }
+  return diagnostics
+}
+
+const trimComments = (
+  statement: string,
+  commentStarted: boolean = false
+): { statement: string; commentStarted: boolean } => {
+  let trimmed = statement.trim()
+
+  if (commentStarted || trimmed.startsWith('/*')) {
+    const parts = trimmed.split('*/')
+    if (parts.length > 1) {
+      return {
+        statement: (parts.pop() as string).trim(),
+        commentStarted: false
+      }
+    } else {
+      return { statement: '', commentStarted: true }
+    }
+  }
+  return { statement: trimmed, commentStarted: false }
+}
+
+const getLineNumber = (statements: string[], index: number): number => {
+  const combinedCode = statements.slice(0, index).join(';')
+  const lines = (combinedCode.match(/\n/g) || []).length + 1
+  return lines
+}
+
+const getColNumber = (statement: string, text: string): number => {
+  return (statement.split('\n').pop() as string).indexOf(text) + 1
+}
+
+/**
+ * Lint rule that checks for the presence of macro name in %mend statement.
+ */
+export const hasMacroNameInMend: FileLintRule = {
+  type: LintRuleType.File,
+  name,
+  description,
+  message,
+  test
+}