From 91c325c714050313429f6d553d7fa1bef15892a2 Mon Sep 17 00:00:00 2001
From: John MacFarlane <jgm@berkeley.edu>
Date: Wed, 23 Oct 2019 09:42:46 -0700
Subject: T.P.Readers.LaTeX.Parsing: add `[Tok]` parameter to rawLaTeXParser.

This allows us to avoid retokenizing multiple times in
e.g. rawLaTeXBlock.  (Unexported module, so not an API change.)
---
 src/Text/Pandoc/Readers/LaTeX.hs         | 19 +++++++++++++------
 src/Text/Pandoc/Readers/LaTeX/Parsing.hs |  7 +++----
 2 files changed, 16 insertions(+), 10 deletions(-)

(limited to 'src/Text/Pandoc')

diff --git a/src/Text/Pandoc/Readers/LaTeX.hs b/src/Text/Pandoc/Readers/LaTeX.hs
index 7313dd90c..c20efce38 100644
--- a/src/Text/Pandoc/Readers/LaTeX.hs
+++ b/src/Text/Pandoc/Readers/LaTeX.hs
@@ -126,14 +126,16 @@ rawLaTeXBlock :: (PandocMonad m, HasMacros s, HasReaderOptions s)
               => ParserT String s m String
 rawLaTeXBlock = do
   lookAhead (try (char '\\' >> letter))
-  snd <$> (rawLaTeXParser False macroDef blocks
-      <|> (rawLaTeXParser True
+  inp <- getInput
+  let toks = tokenize "source" $ T.pack inp
+  snd <$> (rawLaTeXParser toks False macroDef blocks
+      <|> (rawLaTeXParser toks True
              (do choice (map controlSeq
                    ["include", "input", "subfile", "usepackage"])
                  skipMany opt
                  braced
                  return mempty) blocks)
-      <|> rawLaTeXParser True
+      <|> rawLaTeXParser toks True
            (environment <|> blockCommand)
            (mconcat <$> (many (block <|> beginOrEndCommand))))
 
@@ -155,11 +157,13 @@ rawLaTeXInline :: (PandocMonad m, HasMacros s, HasReaderOptions s)
                => ParserT String s m String
 rawLaTeXInline = do
   lookAhead (try (char '\\' >> letter))
+  inp <- getInput
+  let toks = tokenize "source" $ T.pack inp
   raw <- snd <$>
-          (   rawLaTeXParser True
+          (   rawLaTeXParser toks True
               (mempty <$ (controlSeq "input" >> skipMany opt >> braced))
               inlines
-          <|> rawLaTeXParser True (inlineEnvironment <|> inlineCommand')
+          <|> rawLaTeXParser toks True (inlineEnvironment <|> inlineCommand')
               inlines
           )
   finalbraces <- mconcat <$> many (try (string "{}")) -- see #5439
@@ -168,7 +172,10 @@ rawLaTeXInline = do
 inlineCommand :: PandocMonad m => ParserT String ParserState m Inlines
 inlineCommand = do
   lookAhead (try (char '\\' >> letter))
-  fst <$> rawLaTeXParser True (inlineEnvironment <|> inlineCommand') inlines
+  inp <- getInput
+  let toks = tokenize "source" $ T.pack inp
+  fst <$> rawLaTeXParser toks True (inlineEnvironment <|> inlineCommand')
+          inlines
 
 -- inline elements:
 
diff --git a/src/Text/Pandoc/Readers/LaTeX/Parsing.hs b/src/Text/Pandoc/Readers/LaTeX/Parsing.hs
index 018ee2578..af354843a 100644
--- a/src/Text/Pandoc/Readers/LaTeX/Parsing.hs
+++ b/src/Text/Pandoc/Readers/LaTeX/Parsing.hs
@@ -200,10 +200,9 @@ withVerbatimMode parser = do
        return result
 
 rawLaTeXParser :: (PandocMonad m, HasMacros s, HasReaderOptions s)
-               => Bool -> LP m a -> LP m a -> ParserT String s m (a, String)
-rawLaTeXParser retokenize parser valParser = do
-  inp <- getInput
-  let toks = tokenize "source" $ T.pack inp
+               => [Tok] -> Bool -> LP m a -> LP m a
+               -> ParserT String s m (a, String)
+rawLaTeXParser toks retokenize parser valParser = do
   pstate <- getState
   let lstate = def{ sOptions = extractReaderOptions pstate }
   let lstate' = lstate { sMacros = extractMacros pstate }
-- 
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